Volumul 31

31-86 PROIECTAREA ȘI TESTAREA SOLUȚIEI DE CUPLARE LA CÂRLIG A UNEI REMORCI LA UN AUTOVEHICUL UTILITAR TOT TEREN DE TIP CF MOTO 500-2A

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Adela-Ioana BORZAN Bogdan Ovidiu VARGA Dan MOLDOVANU Doru Laurean BĂLDEAN la de

Designing and testing the coupling solution of a trailer at the hook of utility all terrain vehicle CF MOTO 500-2A

 

All-Terrain Vehicles are today quite popular and often known both as entertaining systems as well as utility equipment. The scientific paper shows a small contribution to the design and implementation of a practical solution for coupling the trailer to the ATV tow. There was used a dynamometric sensor in order to measure the inertial forces during braking process in various conditions of driving the ATV CF MOTO 500-2A, considering all the time accelerating and decelerating manoeuvres in the case of trailer towing, when a traction mass is placed on the vehicle’s hook, due to the attached trailer. The importance of studying the kinematic and dynamic aspects of ATV’s driving process resides in significance that the trailer inertia force has on the road train during some driving manoeuvres of cornering, decelerating and accelerating.

 

Keywords: ATV, design, inertia, trailer, tow

Cuvinte cheie: ATV, design,  inerție, remorcă, cârlig

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31-85 CONTRIBUȚII LA CERCETAREA EXPERIMENTALĂ A UZURII SEGMENȚILOR DE PISTON DE LA M.A.S. FYDD FORD FOCUS 1.6 L

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Doru Laurean BĂLDEAN Ioan Aurel CHERECHEŞ la de

Contributions to EXPERIMENTAL research

OF PISTON-rings WEARNESS from

Ford Focus Fydd 1.6 s.i.e.

 

The present paper synthesis experimental testing procedures on the specific task of piston-ring technical state determination in the case of spark ignited engine from Ford Focus 1.6 16v Turnier, code DNW 74 kW. Piston-rings construction and operation, as well as its specific working-surface configuration, materials, dimensions and lubrication procedure, in various thermo-mechanical loading regimes, are essential in influencing the engine’s life-expectance. In this paper are presented the piston-rings construction and their measured dimensions at the end of exploitation period of a spark ignited engine from Ford Focus. The importance for monitoring the piston-ring dimensions at different locations and directions consists in the possibility of controlling their wear-ness.

 

Keywords: Focus, Ford, FYDD, piston-rings, weariness

Cuvinte cheie: Focus, Ford, FYDD, segmenți, uzură

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31-84 ANALIZA DETERMINĂRILOR EXPERIMENTALE ALE UZURII PISTOANELOR M.A.S. DE LA FORD FOCUS

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Doru Laurean BĂLDEAN Ioan Aurel CHERECHEŞ la de

the ANALYZE of the EXPERIMENTAL DETERMINATIONS OF s.i.e. PISTONS’ WEARNESS from Ford Focus

 

The scientific paper summarizes an experimental work on the technical task of piston wear-ness determination in the case of spark ignition engine from Ford Focus. Pistons structure and behaviour, as well as its specific configuration, material, dimensions and lubrication, in various working situations, are essential in generating the engine’s performances. In this work are highlighted the piston elements and their dimensions analyse for an in-use group of components from the Ford Focus spark ignited engine (1.6 16v Turnier/DNW/74 kW). The importance for measuring the piston diameter at different levels and directions consists in the fact of outlining its wear-ness.

 

Keywords: Focus, Ford, piston, spark, weariness

Cuvinte cheie: Focus, Ford, piston, scânteie, uzură

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31-83 CERCETAREA INFLUENȚEI RUGOZITĂȚII ASUPRA PARAMETRILOR DE PERFORMANȚĂ A UNUI MOTOR CU ARDERE INTERNĂ

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Constantin BEȘU Dan MOLDOVANU Ferenc GÁSPÁR la de

research REGARDING THE INFLUENCE OF ROUGHNESS ON PERFORMANCE OF AN INTERNAL COMBUSTION ENGINE

 

The present paper presents the study of the intake pipes surface roughness and its influences on the performance of an internal combustion engine. The measurements of the roughness were made experimentally, and the influences were studied using three simulation software: AVL BOOST (2013.1), GT Suite (7.4.0) and WAVE (2014.1). In order to obtain conclusive results, the same engine (Opel Astra F engine type C20NE) was simulated in three software, using the old type of materials for the intake pipes (forged cast iron) and the newer versions of materials (plastic). The data from all simulations were extracted, managed and accurately inspected and interpreted. The main conclusion of the paper is that the surface roughness of the intake pipe has an effect on the power of the internal combustion engine, not only because of the weight, but also the flow is improved. The same conclusion was obtained from all software.

 

Keywords: Simulation, Roughness, Intake, AVL BOOST, GT Suite, WAVE

Cuvinte cheie: Simulare, Rugozitate, Admisie, AVL BOOST, GT Suite, WAVE

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31-82 CONTRIBUȚII LA CERCETAREA EXPERIMENTALĂ A FUNCȚIONALITĂȚII MODULULUI ELECTRONIC DIESEL CONTROL (EDC) ÎN RAPORT CU ALIMENTAREA DE LA MOTORUL N47 DE LA AUTOMOBILUL BMW 320D (E90)

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Adela-Ioana BORZAN Ciprian MARINCAȘ Doru Laurean BĂLDEAN Levente Botond KOCSIS la de

Contributions to the experimental research of ELECTRONIC DIESEL CONTROL (EDC) MODULe operation in relation with supply of the n47 engine from BMW 320d (e90) automobile

 

The present scientific paper analyzes through latest technologies in the field the operation parameters obtained in practical measurements. There are few detailed studies related to the problem of the electronic diesel control operating parameters of the N47 engine in the model E90, also known as BMW 320d on the available international data bases. There are many such vehicles on the roads in EU, and USA. The electronic diesel control module has a significant influence on the eco-performances (fuel efficiency and carbon-foot-print). Testing the electronic control systems on BMW diesel engines offers solutions and important ideas for optimizing their environmental pollution and fuel savings, while the operation will not be influenced. This paper is developed by testing the electronic diesel control system in order to gain an insight in its operation. The actual values are captured, close analyzed and interpreted.

 

Keywords: BMW, Diesel, E90, electronic, N47

Cuvinte cheie: BMW, Diesel, E90, electronic,  N47

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31-81 CERCETĂRI EXPERIMENTALE ALE PROBLEMELOR ÎN EXPLOATARE CU PRIVIRE LA SISTEMUL DE ÎNCĂRCARE A BATERIEI CU ACID DE LA DACIA SOLENZA

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Cornel GABRIAN Doru Laurean BĂLDEAN Lucian-Vasile CRIȘAN-LUPA la de

Experimental researches of the operational problems concerning the power supply system for the ACID battery from Dacia solenza

 

The present paper express in available technical terms and means of an experimental research concerning problematic aspects of the power supply system from Dacia Solenza 1.4 MPI vehicle in relation with liquid acid accumulator on board.

After cold starts of the internal combustion engine some unusual engine speed fluctuations occur which destabilize the proper operation for the first minutes in cold running of the vehicle.

The worst case scenario is when engine stops suddenly in the middle of a street junction without any previous major signs and as a bonus without any possibility to restart immediately. Analysing the power supply system and differential potential allows the researcher to gain some significant insight in the process and to develop important knowledge (as know-how) and arguments in solving the problem once and for all.

The development of present research aims toward the goal of pointing out the symptoms and problematic aspects related to the power supply and management systems on vehicle Dacia Solenza.

 

Keywords: Dacia, electricity, energy-generator, power-supply

Cuvinte cheie: Dacia, electricitate, generator energie, sistem încărcare

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31-80 CONTRIBUȚII LA CERCETAREA EXPERIMENTALĂ A STĂRII TEHNICE A SUSPENSIEI ȘI A INFLUENȚEI ACESTEIA ASUPRA CONFORTULUI ȘI ADERENȚEI LA CALEA DE RULARE PENTRU AUTOVEHICULUL OPEL CORSA

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Adela-Ioana BORZAN Dan MOLDOVANU Doru Laurean BĂLDEAN la de

Contributions to experimental research OF technical state of suspension and of its influence upon confort and adherence to the road surface for opel corsa vehicle

 

The experimental work presented in this paper shows some of the achievements during practical testing of the suspension system and wheel train in order to gain information on their influence upon adherence or road contact stability. The experimental tests were conducted in order to point out the influence of suspension springs, tires and dampers on the adherence and road contact between tires and sustaining surface. There were examined the weight axle and suspension efficiency on each wheel of the vehicle during vibration of the testing plates. In the experimental work are also specified the main vehicle components and the suspension test-bed infrastructure in order to gain further more quality and definition of the practical procedure. The opportunity and main significance of testing the suspension quality at different vibration frequencies and for each wheel of the two vehicle’s axles in order to point out adherence level is based on the capacity of test-bed and on the importance of vibration influences in vehicle’s over-all performance.

 

Keywords: adherence, Corsa, Opel, suspension, traction

Cuvinte cheie: aderență, Corsa, Opel, suspensie, tracțiune

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31-79 CERCETAREA ASPECTELOR DISFUNCȚIONALE LEGATE DE FILTRUL DE PARTICULE DIESEL (DPF) ÎN CAZUL MOTORULUI DACIA LOGAN E5 1.5dCI

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Doru Laurean BĂLDEAN la de

researching the dYsfunctional aspects concerning diesel particle filter (DPF) IN CASE OF DACIA LOGAN E5 1.5dCI ENGINE

 

This short technical paper shows the outlines of an applied study concerning dysfunctional aspects of the diesel particle filter from after-treatment system behaviour and a specific problematic component analyse, in specific working scenarios, with engine data acquisition equipment linked to engine control module. Analyse of after-treatment equipment allows us to gain valuable knowledge.

The development of present paper aims toward the goal of pointing out the symptoms and dysfunctional aspects related to the exhaust management system and diesel particle filter on vehicle power-train.

 

Keywords: Dacia, diesel, exhaust, filter, particle

Cuvinte cheie: Dacia, diesel, evacuare, filtru, particule

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31-78 CERCETĂRI EXPERIMENTALE PRIVITOARE LA NIVELUL DE COLMATARE AL FILTRULUI DE PARTICULE DIESEL (DPF) DUPĂ 45000 KM ÎN CAZUL MOTORULUI K9K892 E5 1.5dCI

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Adela-Ioana BORZAN Dan MOLDOVANU Doru Laurean BĂLDEAN Vasile ODENIE la de

EXPERIMENTAL RESEARCHES CONCERNING THE CLOGGING level OF DIESEL PARTICLE

FILTER (DPF) AFTER 45000 KM IN CASE

OF K9K892 E5 1.5DCI ENGINE

 

This experimental research paper is pointing out the main ideas of a practical test concerning clogging degree of the diesel particle filter from gas exhaust system, in operation mode, with engine scanner and data processing devices connected to on board diagnosis module. Knowledge concerning the after-treatment processes of exhausted emissions from an internal combustion engine is extremely valuable in configuring a strategy for harmonious and sustainable living on the planet Earth. The main concept of present paper aims to the process of monitoring and measurement of parameters defining the clogging degree of a specific diesel particle filter from k9k892 euro 5 compression ignited engine with displacement capacity of 1.5 liters. The experimental determinations are developed in real time and after a medium operation interval – specifically which is 45000 km on the roads.

 

Keywords: automotive, diesel, emissions, filter, particles

Cuvinte cheie: autovehicule, diesel, emisii, filtru, particule

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31-77 CONTRIBUȚII LA CERCETAREA APLICATIVĂ A ASPECTELOR CINEMATIC-FENOMENOLOGICE ALE SEGMENȚILOR UNUI MOTOR CU APRINDERE PRIN COMPRIMARE UTILIZAT ÎN AGRICULTURĂ ȘI INDUSTRIA AUTO

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Adela BORZAN Doru Laurean BĂLDEAN Ioan Aurel CHERECHEŞ Mihai Aurel CRIŞAN Tudor PAL la de

Contributions to applied research OF kinematic-phenomenological aspects of PISTON-rings for compression ignited engine used in agriculture and automotive industry

 

The present scientific paper synthesizes an applied work on the engineering task of piston-ring displacement modelling and simulation in the case of an internal combustion engine for agricultural application. Piston-rings configuration and displacement, as well as their particular role in the whole assembly, materials, dimensions and lubrication process, in various working cases, are quite significant in influencing the engine’s performance and economy (oil consumption and pollution). In this paper are highlighted the piston-ring displacement modelling and their critical efforts analyse for an agricultural engine, defined on the bases Lombardini tractor engine (510 ccm). The opportunity and importance of modelling the piston-rings movement at different levels and cases in the operational cycle lay on the possibility of highlighting their stresses and predict work expectancy.

 

Keywords: analyse, engine, rings, simulation, tractor

Cuvinte cheie: analiză, motor, segmenți, simulare, tractor

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31-76 CONTRIBUȚII LA CERCETAREA EXPERIMENTALĂ A INFLUENȚEI SISTEMULUI DE EVACUARE ASUPRA PERFORMANȚELOR ÎN CAZUL AUTOTURISMULUI DAEWOO MATIZ

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Dan MOLDOVANU Doru Laurean BĂLDEAN Ioan Aurel CHERECHEŞ Lucian CRIȘAN-LUPA la de

Contributions to the experimental research of exhaust system influence upon performances in the case of Daewoo Matiz vehicle

 

The present experimental research points out a complete work of testing the exhaust pipe and after-treatment systems for a modern spark engines with different components, by evaluating the phenomenology and few parameters. There is a fact that the gas exhaust system construction and operation has an influence upon the gas flow and also on the engine behaviour. Testing the exhaust after-treatment systems may generate engineering improvement solutions in order to optimize the engine performance and hydrocarbon economy.

Nowadays in Europe the environmental issues and energy independence are very often priorities on the public and private agenda. The present paper research the issue of practical testing exhaust gas pipe-line and advances the solution of repair and evaluate existing components, with significant changes in dynamic performance and engine environmental impact. By restoring the after-treatment components in their original state the emissions are lowered.

 

Keywords: After-treatment, Daewoo, Exhaust, Pollutant, Matiz

Cuvinte cheie: Depoluare, Daewoo, Evacuare, Poluant, Matiz

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31-75 CERCETAREA EXPERIMENTALĂ A FENOMENOLOGIEI CONSUMULUI DE ULEI ȘI MIXTIUNII AGENTULUI DE RĂCIRE CU LUBRIFIANTUL LA MOTORUL CU APRIN-DERE PRIN SCÂNTEIE 1.6 FYDD DE PE FORD FOCUS

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Doru Laurean BĂLDEAN Ioan Aurel CHERECHEŞ la de

the experimental research of the phenomenology of oil consumption AND MIXING cooling agent with lubricant in spark ignited engine 1.6 Fydd from Ford Focus

 

The present research paper outlines an experimental activity on the diagnosing and analysing procedure of engine deterioration phase in the case of specific operation in real road traffic with Ford Focus Turnier 1.6 litter 16v DNW/74 kW. Engine configuration and phenomenology, as well as its specific behaviour, performance, cooling and lubrication, in various operating conditions, are significant in comprehending the expected working duration. In this paper are studied the aspects related to the main aspects concerning engine’s deterioration and out of service interval due to cylinder-head problems. The importance for measuring the compression at different cylinders and diameters of each liner consists in the fact that it shows particular problems.

 

Keywords: consumption, DNW, FYDD, Ford, lubricant

Cuvinte cheie: consum, DNW, FYDD, Ford, lubrifiant

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31-74 CONTRIBUȚII LA CERCETAREA EXPERIMENTALĂ A AMPRENTEI DE CARBON ASUPRA MEDIULUI ÎN CAZUL MOTORULUI 1400 CMC DE LA AUTOVEHICULUL SKODA FABIA

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Doru Laurean BĂLDEAN Ferenc GÁSPÁR la de

analizing a THERMAL MANAGEMENT SOLUTION of engine as EMBEDDED TECHNOLOGy in rally vehicles

 

This scientific work realizes a research of the carbon-foot-print aspects related with fuel supply system behaviour and management system analyse as well as engine consumption parameters, coolant temperature, environmental temperature and on-road-operational behaviour, in different traffic scenarios, with engine monitoring equipment in direct connection with the digital control module via on board monitoring. There are pointed-out the consumption levels and the carbon-foot print of the Skoda Fabia 1.4 l engine (50 kW). The opportunity for study the fuel consumption rate and the engine behaviour in the case of traffic scenarios on urban and extra-urban-national roads consists in the availability of technical means. The present paper aims the goal of outlining the problem related to the fuel consumption and carbon-foot-print.

 

Keywords: automotive, Fabia, injection, multipoint, Skoda

Cuvinte cheie: automobile, Fabia, injecție, multipunct, Skoda

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31-73 CERCETĂRI EXPERIMENTALE PRIVITOARE LA DETERMINAREA CONSUMULUI EXTRA-URBAN DE COMBUSTIBIL LA RENAULT KANGOO

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Adela BORZAN Dan MOLDOVANU Doru Laurean BĂLDEAN la de

experimental researches concerning the extra-urban fuel consumption determination for Renault kangoo

 

The present work realizes an experimental research and analytic study of the fuel efficiency data gained in extra-urban determinations concerning the fuel consumption, vehicle average speed on the road, location and ecologic behaviour, in climate and real-time defined road conditions, with Renault Kangoo from 2007, during the frequently used track in exploitation between Cluj-Napoca and Alba Iulia cities. There was evaluated the carbon foot print and fuel efficiency measured from the initial reference point (in Cluj-Napoca) and also the economic and environmental behaviour based on the fuel supply process in the case of testing on a real-road track. The opportunity of the present research paper is given by the fact that vehicle economy and environmental behaviour during extra-urban driving operation have a significant influence on carbon impact when engaging in high speeds.

 

Keywords: consumption, fuel, extra-urban, Kangoo, Renault

Cuvinte cheie: consum, combustibil,  extra-urban, Kangoo, Renault

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31-72 STUDIUL INFLUENȚEI UNOR FACTORI CONSTRUCTIV-FUNCȚIONALI ASUPRA CALITĂȚII PORNIRII, ARDERII ȘI GENEZEI EMISIILOR MOTORULUI 1.7 CDI DE LA MERCEDES VANEO

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Doru Laurean BĂLDEAN Ioan Aurel CHERECHEŞ Lucian CRIȘAN-LUPA la de

Study of the influence of manufature and operational factors upon the quality of engine start, combustion and emissions generation of 1.7 CDI engine from MERCEDES VANEO

 

The present paper makes a theoretical and applied study of the components and entire engine starting and preheating system from diesel 1.7 CDI Mercedes Vaneo engine in relation with glow plugs, air filter, engine behaviour and smoke particles generation, in various cold-starting conditions and procedures, with diagnosis equipment connected to the electric and electronic management system. There is pointed out the preheating system for diesel engine with special glow plugs for air temperature increase before the fuel injection supply in the combustion chamber. These aspects have a significant influence upon the pollutant emissions production and development. Lowering the pre-combustion temperatures in the cylinder negatively influences the compression ignition process by dissipating the heat level. The opportunity for studying the pre-heating system of the Vaneo engine comes from the frequency of such a malfunction in compression ignited engines during winter cold-start.

 

Keywords: combustion, diesel, hydrocabrons, Mercedes, Vaneo

Cuvinte cheie: aprindere, diesel,  hidrocarburi, Mercedes, Vaneo

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31-71 CERCETAREA EXPERIMENTALĂ A SISTEMULUI DE MANAGEMENT DE LA AUTOVEHICULUL SUV PEUGEOT 4007

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Adela BORZAN Andrei MOLDOVAN Doru Laurean BĂLDEAN la de

experimental research of the management system FROM the Peugeot 4007

Sport utility vehicle

 

The scientific paper points out an applied approach of the actual values recorded from the engine management system. Some parameters were analyzed, related to fuel consumption, engine speed, accelerator pedal position sensor, fuel temperature, coolant temperature and intake air temperature in specific operating conditions and accelerator pedal positions, with sport utility vehicle Peugeot 4007 during the transient stage operation.

There are very few explicit researches concerning the consumption and performance in real operating situation of the Peugeot 4007.

Today are many SUVs on the streets of our nation and in EU, but there is a little interest concerning their fuel economy and environmental impact. The engine coolant and fuel temperature, besides the engine speed and accelerator pedal position have a significant influence on the engine’s economy and carbon foot-print. In this applied engineering work it is researched the fuel consumption of the engine when operating the Peugeot 4007 SUV in order to point out the influence between the accelerator in driver’s cabin, engine’ speed, other systems, fuel economy and environmental impact. The recorded data are close inspected and post-processed.

 

Keywords: Combustion, Fuel, Injection, SUV, Peugeot, 4007

Cuvinte cheie: Ardere, Combustibil, Injecție, SUV, Peugeot, 4007

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31-70 CONTRIBUȚII LA CERCETAREA EXPERIMENTALĂ A PARAMETRILOR SISTEMULUI DE ALIMENTARE PRIN INJECȚIE DE LA MOTORUL 3.0i AL AUTOMOBILULUI BMW X5

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Adela-Ioana BORZAN Ferenc GÁSPÁR George-Vlad TOADER Ioan Aurel CHERECHEŞ Levente Botond KOCSIS la de

contributions to the EXPERIMENTAL RESEARCH OF INJECTION FUEL SUPPLY SYSTEM FROM 3.0i ENGINE OF BMW X 5 ROAD VEHICLES

 

This scientific article shows the results of multiple experimental tests and researches made on the basis of fuel injection process during different operating regimes. Measured parameters are in this case engine speed, fuel consumption, injection timing and engine temperature.

The main objective of these tests is to determine how fuel consumption is influenced by engine speed and engine coolant temperature if the vehicle is operating in neutral gear that means the engine has no load on the crankshaft. In this case the engine speed will be correlated with the accelerating pedal position. The road vehicle on which the tests will be conducted is BMW X5 3.0i model years 2002. There aren’t any detailed studies made on this model. It is a well-known that a considerable number of such vehicles are registered in our country. Besides this body type, BMW Factory equipped other vehicles with this engine.

The experimental tests offer engineers a better understanding of injection process and fuel economy in the case of conventional fuel supply systems. The experimental data are summarized and accurately analyzed and represented.

 

Keywords: automotive, BMW, consumption, engine, injection

Cuvinte-cheie: automobile, BMW, consum, motor, Injecţie

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31-69 ANALIZA FENOMENELOR SEMIOZICE ÎN CAZUL SISTEMULUI ELECTRONIC DE CONTROL A MOTORULUI CU APRINDERE PRIN SCÂNTEIE DE LA OPEL ASTRA F

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Dan MOLDOVANU Doru Laurean BĂLDEAN Lucian CRIȘAN-LUPA la de

The analyze of semiosis phenomena in the case of electronic control system of the spark ignited engine from opel astra f

 

The present paper shows a detailed analysis of semioses phenomena for modern spark engines with electronic processing components installed in order to improve engine control, by generating a diagnosing protocol of the power-train in operation. It points out the specific field of electronics measuring methods (with modern micro-processor components) developed for spark ignited engines, specifically the ones with single point injection in the present case. There is known that the sensors and actuators operation besides the electronic control unit have a major influence upon the operational process and also on the engine reliability and economy. Studying and testing the electronic control systems on spark ignited engines may lead to a different engineering measures and improvement strategies in order to optimize the power-train performance and fuel economy, while the vehicle’s dynamic will be accurately controlled. Today in the field of computer-science and technology diagnosing process and procedures are very important in order to gain the most performance and functionality out of a component or a system. The present article presents the issue of experimentally evaluating electronic control system and improving the operation with significant changes and measurements on the parameters which must comply with the manufacturer’s prescription of system performance.

 

Keywords: automotive, electronics, injection, simptoms, spark

Cuvinte cheie: automobilistic, electronică,  injecție, simptome, scânteie

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31-68 STUDIUL ASPECTELOR SEMIOLOGICE PRIVIND HIDRAULICA SISTEMULUI DE INJECȚIE ÎN DIAGNOSTICAREA MOTORULUI 1.8 TDCI DE LA FORD FOCUS

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Adela-Ioana BORZAN Doru Laurean BĂLDEAN Ioan Aurel CHERECHEŞ Liviu-Daniel JOVREA la de

Study of the semiologic aspects concerning the hidraulics of the injection system in diagnosing 1.8 TDCI engine from Ford Focus

 

The present paper develops an applied study of the diagnosing aspects of the injection system behaviour and component analyse as well as engine management parameters, injection quantity, fuel temperature and non-operational behaviour, in different testing situations, with engine scanning equipment connected to the electronic control module via on board connection. Here are highlighted the injection system and the injector for diesel fuel supply of the Ford Focus engine (1.8 TDCi Turnier/DNW/85.0 kW).

 

Importance for testing the injection system of the Ford Focus engine comes from the numerous vehicles that manifest the symptoms of misfiring, engine-stop, and other problems in operation. The development of present paper aims toward the goal of outlining the problem related to the fuel supply system and injectors of the compression ignited engine in some specific testing situations.

 

Keywords: diesel, Focus, Ford, fuel, injection

Cuvinte cheie: diesel, Focus, Ford, combustibil, injecție

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31-67 CERCETAREA REPREZENTĂRII LA BORD A INFORMAȚIILOR ESENȚIALE PRIVITOARE LA CONDIȚIILE TEHNICE ÎN FUNCȚIONARE ȘI ECONOMICITATEA UNUI AUTOVEHICUL ÎN EXPLOATARE

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Adela-Ioana BORZAN Doru Laurean BĂLDEAN Septimiu JOVREA la de

Researching on-board display of esential informations concerning technical conditions

in operation and fuel-economy

of a motor-vehicle in operation

 

The scientific paper realizes an applied research of the specifications and data available in graphic representation systems on-board in passenger compartment of the modern motor-vehicles. Analyzing the state of the art technologies available on the most advanced and up to date automotive products on the streets in order to better understand the evolution from what there was ten or fifteen years ago to what will be materialized in the near future allows the designer and the young researchers to improve their knowledge on the specific field. Importance for studying the on-board graphics consists in knowing how information versatility and availability is useful for the driver and passenger during the trip.

 

Keywords: Benz, economy, graphics, Mercedes, panel-display

Cuvinte cheie: Benz, economie, grafice, Mercedes, panou-afișaj

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31-66 OPTIMIZAREA RUTEI AUTOVEHICULELOR FOLOSITE LA TRANSPORTUL DE BALAST IN SCOPUL REDUCERII CONSUMULUI DE COMBUSTIBIL

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Marinela INŢĂ la de

ROUTE OPTIMIZATION FOR VEHICLES USED TO TRANSPORT BALLAST TO REDUCE FUEL CONSUMPTION

 

Fuel consumption has become a growing problem for transport companies especially by the fact that the acquisition cost of fuel increased, transport distances were increased and the quality of roads degrades from year to year. This paper analyses the fuel consumption of the sorting station on the route to the excavation, and based on results obtained is proposed reconfiguration of the route, which will reduce the distance between the two points of interest and therefore fuel consumption.

 

Keywords: route optimization, fuel consumption

Cuvinte cheie: traseu, optimizare, consum de combustibil

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31-65 ANALIZA ÎMBUNĂTĂȚIRII CONSUMULUI DE COMBUSTIBIL A UNUI MAI PRIN DEZACTIVARE DE CILINDRI

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Ferenc GÁSPÁR Levente Botond KOCSIS Zsolt KELEMEN la de

Fuel consumption improvement of an IC

engine by cylinder deactivation

 

The paper aims to analyse the fuel consumption gain of an IC engine equipped with cylinder deactivation technology, through software simulations. Data sets obtained with AVL BOOST simulation software were introduced in AVL CRUISE to run a NEDC cycle to demonstrate the feasibility of cylinder deactivation technology. Simulations were run separately for the urban cycle and then for extra-urban cycle to see what is the technology best suited for.

 

Keywords: fuel consumption, cylinder deactivation, simulation

Cuvinte cheie: consum combustibil, dezactivare de cilindri, simulare

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31-64 CERCETAREA PARAMETRILOR SISTEMULUI DE SUPRAALIMENTARE A MOTOARELOR CU APRINDERE PRIN COMPRIMARE

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Bogdan Laurenţiu BLĂNARU la de

research of SUPERCHARGHING SYSTEM parameters FOR COMPRESSION IGNITION ENGINES

 

This study explains the parameters that influence supercharging system operation. This parameters were obtained from practical activity, when with a diagnostic system were identifies and analyzed some sizes such as: engine speed, acceleration pedal position, air mass, boost pressure actual, boost pressure nominal, boost pressure control duty cycle, intake air temperature, injection quantity actual. The vehicle which was chosen for practical activity is a Audi A4 Avant, because the presented car benefits of a supercharging system which increases engine power. A supercharger system is characterized by the fact that particles of air that entering in the engine is compressed by a compressor and forced introduced into the combustion chamber. Supercharging system from Audi A4 is based on a turbine which is driven by exhaust gas and has attached a shaft through which compressor is actioned. There parameters identified on practical activity interpreted through graphic representation in this way can be observed the evolution of certain sizes.

 

Keywords: Audi, Supercharge, Turbine, Engine

Cuvinte cheie: Audi, Supraalimentare, Turbină,  Motor

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31-63 CONTRIBUȚII LA CERCETAREA EXPERIMENTALĂ A VISCOZITĂȚII ȘI DENSITĂȚII LUBRIFIANTULUI UNUI MOTOR CU APRINDERE PRIN COMPRIMARE DE LA TRACTOR ALIMENTAT CU BIOCOMBUSTIBIL

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Adela BORZAN Attila BALLA Doru Laurean BĂLDEAN Ioan Aurel CHERECHEŞ Mihai Aurel CRIŞAN la de

Contributions to experimental research OF lubricant viscosity and density from tractor compression ignition engine supplied with biofuel

 

The present research paper shows some of the results achieved during practical tests on the compression ignited engine of a mini-tractor for agricultural use.

The developed tests were conducted in order to point out the influence of working time, type of fuel and temperature regime on the main physical properties of the lubricant. There were monitored the viscosity and density of lubricant and of few blends between the lubricant and the supplied fuels. In the research work are also highlighted the main engine components and the test-bed infrastructure in order to facilitate further improvement and development of the procedure.

The necessity and high importance of testing the lubricant main properties, as viscosity and density, at different temperature levels and in various cases of fuel supply methods and substances in the compression ignited engine is based on the ubiquity of biofuel implementation in modern commercial fuels.

 

Keywords: cylinder, friction, lubricant, tribology, viscosity

Cuvinte cheie: cilindru, frecare, lubrifiant, tribologie, viscozitate

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31-62 CALCULUL TERMIC AL MOTORULUI CU APRINDERE PRIN COMPRIMARE ALIMENTAT CU BIODIESEL

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Igor BEŞLEAGĂ Ion LACUSTA la de

CALCULATION OF HEAT ENGINE POWERED WITH COMPRESSION IGNITION BIODIESEL

 

In the work is presented thermal calculation time compression ignition engine fuelled with biodiesel, which will allow tracing and checking the chart indicated the fundamental dimensions of the engine, and the necessity of checking the calculations of resistance of main parts of the motor mechanism.

 

Keywords: diesel fuel, emission of gas, combustibles, gas of escapements, motor – hour, tractor engines, excess air coefficient, residual gas temperature

Cuvinte-cheie: motorină, emisii de gaze, combustibili, gaze de eșapament, moto-oră, motoare de tractor, coeficientul excesului de aer, temperatura gazului rezidual

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31-61 MANAGEMENTUL CERCETĂRII ÎN DOMENIUL MOTOARELOR ALIMENTATE CU BIOCOMBUSTIBILI

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Petru Ovidiu MILOȘ la de

RESEARCH MANAGEMENT IN

ENGINES POWERED BY BIOFUELS

 

The bio-fuels know, mainly during the last decade, an accelerating growth. Due to the conventional resources limitation, to the new concepts regarding energy security policy and also to the global agricultural strategies the specialists involved in the field of research management in bio-fuels domain need to respond to different challenges

 

Keywords: biofuel research management, biodiesel

Cuvinte cheie: biocombustibil, managementul cercetării, biodiesel

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31-60 STUDII ȘI CERCETĂRI ALE ASPECTELOR N.V.H. LEGATE DE MODUL DE EXPLOATARE AL AUTOVEHICULELOR RUTIERE

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Doru Laurean BĂLDEAN la de

Studies and researches of the N.V.H. aspects concerning exploitation mode of road vehicles

 

This scientific and technical paper outlines the studies made on noise, vibrations and harshness aspects in correlation with exploitation of road vehicles. Professional forums and providers look kindly upon pragmatically oriented science from experimental applications and modules’ content (in specialty disciplines from research zone), being the same case with the characteristics of Noise, Vibration and Harshness (NVH) of vehicles in EU. In this context the content of the present paper and the analysed objects, as well as presenting method and specific phases are aiming to fulfil these particular goals and expectations from scientific and economic community.

 

Keywords: harshness, noise, road, vehicle, vibration

Cuvinte cheie: disconfort, zgomot, rutier, vehicul, vibrații

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31-59 PROIECTAREA ȘI REALIZAREA UNEI SOLUȚII DE MANAGEMENT ȘI MĂSURARE TERMICĂ ÎN PROPULSORUL MAȘINILOR PENTRU TEHNOLOGII INTEGRATE ÎN AGRICULTURA MODERNĂ

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Adela-Ioana BORZAN Andrei DOLEAN Doru Laurean BĂLDEAN Ioan Aurel CHERECHEŞ la de

designing and realizing a THERMAL MEASUREMENT AND MANAGEMENT SOLUTION in machines power-train FOR MODERN AGRICULTURE EMBEDDED TECHNOLOGIES

 

The present scientific paper develops an experimental research concerning the exhaust system behaviour and temperature analyse as well as a simulation model, fuel consumption, and other parameters in different testing conditions on a laboratory test-bed.

There are highlighted the possibilities of clogging the exhaust system, by introducing a flaps in the exhaust-pipe slot (specially created for this purpose). Importance and opportunity for researching and testing the exhaust system of the Lombardini compression ignited engine comes from the numerous specific applications that manifest the symptoms of clogging, engine-low performance, and other diminished performances in operation.

The main objective of this paper consists in outlining the problem related to the exhaust system clogging and energetic-ecologic-economic performances of the compression ignited engine in laboratory testing situations.

 

Keywords: diesel, exhaust, Lombardini, pollution, tracter

Cuvinte cheie: diesel, eșapament, Lombardini, poluare, tractor

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31-58 ANALIZA UNEI SOLUȚII DE MANAGEMENT TERMIC AL MOTORULUI CA TEHNOLOGIE INTEGRATĂ ÎN AUTOVEHICULUL DE RALIU

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Adela-Ioana BORZAN Doru Laurean BĂLDEAN Ioan Aurel CHERECHEŞ Iosif FERENȚI la de

analizing a THERMAL MANAGEMENT SOLUTION of engine as EMBEDDED TECHNOLOGy in rally vehicles

 

The present scientific paper develops an applied research of the thermal management aspects in the engine operational behavior and a graphic analyze of the real time measurements. Engine management parameters were recorded during rally competition, as well as injection duty, air temperature and other-operational behavior, in different running situations, with engine monitoring equipment connected to the electronic control unite via wire connection. Here are highlighted the thermal management system and the injector duty cycle, fuel supply and the ignition angle of the motor-sport vehicle (Mitsubishi Lancer in 2011). Importance for testing the engine systems of the Mitsubishi Lancer comes from the numerous rally vehicles that are in such competitions, and interest in understanding them. The development of present work aims toward the goal of outlining the aspects related to the thermal management and fuel supply systems and their relation with ignition control in some specific operating situations.

 

Keywords: automotive, management, motor-sport, rally, thermal

Cuvinte cheie: automobilism, management, motor-sport, raliu, termic

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31-57 CERCETAREA APLICATIVĂ A POSIBILITĂȚII ȘI OPORTUNITĂȚII DEZVOLTĂRII VLOGULUI ÎN DOMENIUL AUTOMOBILISTIC ȘI MECANIC CU SCOPUL OPTIMIZĂRII EXPLOATĂRII RESURSELOR ENERGETICE, FINANCIARE ȘI INTELECTUALE

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Doru Laurean BĂLDEAN Levente FURU la de

Applied research of the posSibilities and oportunities in developing the vlog in automotive and mechanics fields with the target of optimizing the exploitation of energetic, financial and intelectual resources

 

Vlogging as a video blog is a more often adopted activity to communicate rapidly information through on-line environment and to reach people all over the world in order to connect them with the events and information. Today using the vlog channels and posted data on-line in video formats it may reduce number of experiments that repeat the same algorithm or procedure, thus saving some of the available resources and great amount of energy.

Using wisely the planetary resources, energy, intellectual property, financing and material may lead to prosperous development of humanity and individuals, in stability and proper environment. In this article it is shown the analytics of a developed vlog in the past few years, and its results on various criteria.

 

Keywords: activity, blog, disemination, posting, vlog

Cuvinte cheie: activitate, blog,  diseminare, publicare, vlog

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31-56 PROIECTAREA ȘI TESTAREA UNUI SISTEM DE CONVERSIE TERMO-HIDRO-ENERGETICĂ A DEȘEURILOR COMBUSTIBILE PENTRU UN IMOBIL DE 200 M2

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Adela-Ioana BORZAN Doru Laurean BĂLDEAN Ioan Aurel CHERECHEŞ la de

 

designing and testing a system for THERMAL-hydro-energetic conversion of flamable waste FOR a 200 square meters building

 

The present work develops an applied design of the thermal, hydraulic and fuel storage components of the waste materials energetic-conversion system. Behavior and operational analyze as well as combustion management parameters, fuel quantity, water temperature and problematic behavior, in different testing situations, with temperature scanning equipment connected to the analogic control module via thermostats. Here are outlined the waste combustion system and the primitive method of fuel supply in the case of first design, as well as the possibilities for improvement and automation. Importance for testing the waste energetic conversion system consists in the fact that there are a multitude of flammable waste materials that should be disposed. Garbage waste is so high-level that nowadays humanity does not know what to do with it. The development of present paper aims toward the goal of outlining the problem related to the fuel supply system and the pollution of the first design, as well as to the possibility of installing particle filters and catalyst in order to gain an after-treatment gas-control.

 

Keywords: combustion, energy, fuel, garbage, waste

Cuvinte cheie: combustie, energie, combustibil, gunoaie, deseuri

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31-55 EFICIENȚA UNUI SISTEM TERMO SOLAR ÎN CONTEXTUL ECONOMIC ACTUAL. CAZ PARTICULAR

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Ferenc GÁSPÁR Ioan Aurel CHERECHEŞ Levente Botond KOCSIS la de

ECONOMIC EFFICIENCY OF A THERMOSOLAR SYSTEM.

A CASE STUDY

 

Integration costs of a thermal solar system for domestic hot water preparation are a decisive factor regarding the implementation of the system. Integration cost depends on the size, capacity, complexity and the type of the thermal solar system. The payback period is directly influenced by the costs of conventional energy prices. Thus, this paper estimates the economic efficiency or the payback period of a thermal solar system for a household with three persons. The thermal solar system is chosen based on the three-year average monthly water consumption. The payback period is estimated based on the last three year monthly average costs of natural gas consumption.

 

Keywords: thermal solar system, integration costs, economic efficiency, solar thermal collector, solar energy

Cuvinte cheie: sistem termo solar, costuri de instalare, eficiență economică, captator termo solar, energie solară

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31-54 STUDII ȘI CERCETĂRI PRIVITOARE LA VALIDAREA METODELOR ŞI ASIGURAREA CALITĂŢII REZULTATELOR ÎN LABORATORUL DE ÎNCERCĂRI PENTRU ULEIURILE MINERALE ELECTROIZOLANTE

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Cornel GABRIAN Dan ROŞCA Doru Laurean BĂLDEAN Ioan Aurel CHERECHEŞ Simona Sorina GABRIAN la de

Studies and researches concerning

the methods validation and data

quality check IN TESTing laboratory

for INSULATING mineral oils

 

This applied technical paper shows the strict procedures and specific operation in specialized laboratory for physical-chemical studies, in order to ensure a proper validation method and data quality checking. Specialized authorities on national and international levels are verifying and control the proper functionality of research certified laboratories. Also beneficiaries and consumers are interested in getting all the precise data in the physical-chemical measurements both in heavy and food industry. In this situation the present scientific article makes a presentation of operating methodology and specific aspects which define the work and quality checks in this field.

 

Keywords: analyse, quality, laboratory, oil, methodology, test, technical

Cuvinte cheie: analiză, calitate, laborator, ulei, metode, încercare, tehnic

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31-53 ANALIZA CANTITATIVĂ A SPECTRELOR DE FOTOELECTRONI XPS

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Mihaela FLORI la de

QUANTITATIVE ANALYIS OF XPS PHOTOELECTRON SPECTRA

 

The paper addresses some issues regarding the influence of main factors on intensity of XPS peaks, namely photoionization cross-section and inelastic mean free path (IMFP). Also is described the XPS PeakFit software commonly used for quantitative determinations of XPS photoelectron spectra.

 

Keywords: X-ray photoelectron spectroscopy, spectrum, peak intensity

Cuvinte cheie: spectroscopie de fotoelectroni cu raze X, spectru, intensitatea unui peak

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31-52 REALIZAREA UNUI IZOLATOR ELECTRIC DIN MATERIALE COMPOZITE

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Dorel BUNCIANU Mihai JĂDĂNEANŢ la de

REALIZATION OF AN ELECTRICALLY INSULATING

DEVICE FROM COMPOSITE MATERIALS

 

The objective of this article is to present the final achievement of an electrical insulator, from composite materials. The composite material was selected after painstaking studies, which they duly designated for that purpose.

 

Keywords: composite materials, electrically insulating devices

Cuvinte cheie: materiale compozite, izolatoare electrice

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31-51 FUZIUNEA IMAGINII PENTRU ÎMBUNĂTĂȚIREA IMAGINILOR MULTISPECTRALE PRIN SATELIT

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Ahmed AK. TAHIR Shamal AL-DOHUKI la de

IMAGE FUSION FOR RESOLUTION IMPROVEMENT

OF MULTISPECTRAL SATELLITE IMAGES

 

This paper presents a comparative study concerning the techniques of image fusion that aim at the improvement of the spatial resolution of multispectral satellite images for remote sensing applications. Three methods are used, Hue-Saturation-Intensity color transform (HSI), Principal Component Analysis (PCA), and Brovey technique. Two datasets of two satellites having different resolution and different resolution ratio are used, LANDSAT7 and IKONOS. The measurement of Trade-Off-Value, which is a measure of the degree of resolution improvement and spectral property preservation, is used to evaluate the given methods. The results have shown the superiority of the Brovey method for the LANDSAT7 dataset and the superiority of HSI for the IKONOS dataset.

 

Keywords: image fusion, remote sensing, Hue-Saturation-Intensity transform (HSI), Principal Component Analysis (PCA), Brovey technique

Cuvinte cheie: fuziune a imaginii, teledetecție, transformare a culorii nuanță-saturație-intensitate transformata (HSI), Analiza componentei principale (PCA), tehnica Brovey

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31-50 CAMERELE DE TERMOVIZIUNE, APARATE DE MĂSURĂ UTILE ÎN INGINERIE

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Corina Maria DINIŞ Iosif POPA Gabriel Nicolae POPA Sorin Ioan DEACONU la de

THERMAL IMAGERS, USEFUL MEASUREMENT

DEVICES IN ENGINEERING

 

The paper presents an analysis of thermal imagers used in different fields of industries. Thermal imagers are used in almost all industries, and can be used in laboratory applications, because of their advantages: measurement without contact, the visible and thermal images saving and transferring to a personal computer, measuring without interrupting technological process, comparing the visible image with the thermal image. Thermal imagers can be used to maintenance, debugging, and control of equipment and installations.

 

Keywords: thermal imagers, power engineering, electronics

Cuvinte cheie: camere de termoviziune, electroenergetică, electronică

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31-49 VOLTMETRU DIGITAL – COMPONENTA SOFTWARE

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Carmen MAHALU George MAHALU Ionel DUMISTRĂCEL la de

Digital VOLTMETER – SOFTWARE COMPONENT

 

This work paper treats software component of the digital voltmeter application under Multisim environment simulation. The software part is wrote in C programming language for the microcontroller apps. The whole code is original and was wrote by authors.

 

Keywords: microcontroller, register, convertion, source code

Cuvinte cheie: microcontroler, registru, conversie, cod sursă

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31-48 VOLTMETRU DIGITAL – COMPONENTA HARDWARE

Această intrare a fost publicată în 2017 Volumul 31 și etichetată George MAHALU Radu PENTIUC la de

DIGITAL VOLTMETER – HARDWARE COMPONENT

 

In this work paper we will treat the hardware component of the digital voltmeter simulated under Multisim environment. This application consists into ensamble performed between an I8051 microcontroller, an analog to digital converter and a LCD display on that we will drawing some text about voltage magnitude from the input of the system.

 

Keywords: microcontroller, LCD screen, converter, signal

Cuvinte cheie: microcontroler, ecran LCD, convertor, semnal

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31-47 VOLTMETRU DIGITAL SIMULAT SUB MEDIUL MULTISIM

Această intrare a fost publicată în 2017 Volumul 31 și etichetată George MAHALU la de

SIMULATED DIGITAL VOLTMETER

UNDER MULTISIM ENVIRONMENT

 

This work paper presents modeling techniques and designing of the one electronic digital voltmeter under Multisim environment. The program application builds around the 8051 microcontroller and in the follows work papers we will do references to hardware and software structures.

 

Keywords: microcontroller, simulation, digital, code, voltmeter

Cuvinte cheie: microcontroler, simulare, digital, cod, voltmetru

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31-46 ANALIZA UNOR SISTEME CLASICE DE TELEMĂSURARE A NIVELULUI LICHIDELOR. SISTEME PLUTITOR-POTENȚIOMETRU CIRCULAR ȘI PLUTITOR- SELSINE – Partea a II-a

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Carmen MOTORGA Gabriel Nicolae POPA Corina Maria DINIŞ Iosif POPA la de

FOR LIQUID LEVEL. FLOATING-POTENTIOMETER AND FLOATING-SELSINS SYSTEMS – Part II

 

The paper presents an analysis of four classic telemetry systems for level measurement, i.e.: for three such systems with float and counterweight, such as those with D.C. pulses, with potentiometer and a D.C. voltmeter, and two identical selsins, one transmitter and one receiver, and a resistive transducer system and logo meter level indicator, which is only used for liquids that have low resistivity. At the last system, it was made a study about linearized conversion, liquid level in the angular displacement of the indicator.

 

Keywords: float level sensor, transducer resistive level gauge logometru, synchro

Cuvinte cheie: traductor de nivel cu plutitor, traductor rezistiv de nivel, logometru indicator de nivel, selsin

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31-45 ANALIZA UNOR SISTEME CLASICE DE TELEMĂSURARE A NIVELULUI LICHIDELOR. SISTEME CU IMPULSURI DE C.C. ȘI CU LOGOMETRU DE NIVEL Partea I-a

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Carmen MOTORGA Corina Maria DINIŞ Gabriel Nicolae POPA Iosif POPA la de

ANALYSIS ON CLASSIC TELEMETRY SYSTEMS USED FOR LIQUID LEVEL. D.C. PULSES SYSTEMS AND LEVEL LOGOMETER – Part I

 

The paper presents an analysis of four classic telemetry systems for level measurement, i.e.: for three such systems with floating and counterweight, such as those with D.C. pulses, with potentiometer and a D.C. voltmeter, and two identical selsins, one transmitter and one receiver, and a resistive transducer system and logo meter level indicator, which is only used for liquids that have low resistivity. At the last system, it was made a study about linearized conversion, for liquid level in the angular displacement of the indicator.

 

Keywords: float level sensor, transducer resistive level gauge logometru, synchro

Cuvinte cheie: traductor de nivel cu plutitor, traductor rezistiv de nivel, logometru indicator de nivel, selsin

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31-44 CONFIGURAŢIA ŞI COSTUL UNUI TABLOU ELECTRIC PENTRU O INSTALAŢIE DE PANOURI FOTOVOLTAICE ÎN REŢEA

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Daniel V. STAN Ştefan PAVEL la de

THE ARCHITECTURE AND THE COST OF AN ELECTRICAL PANEL FOR A PHOTOVOLTAIC NETWORK SYSTEM

 

The design and execution of the afferent electrical panel in the electrical system intended for the photo-voltaic panels, the on grid system in the network, implies a great responsibility towards the recipient and for the safety in exploitation of the system. Therewith its architecture is configured depending on the installed power of the electrical energy-producing system of photo-voltaic panels.

 

Keywords: electric panel, electrical installations, photovoltaic panel

Cuvinte cheie: tablou electric, instalaţie electrică, panou fotovoltaic

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31-43 INTERFAȚĂ ”C-MATLAB-SIMULINK” PENTRU GENERARE AUTOMATĂ GRAFICĂ A CARACTERISTICILOR MAȘINII DE INDUCȚIE OPTIMIZATĂ CU PROGRAMUL ”IND”

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Gheorghe VERTAN Lucian-Corneliu OCOLIŞAN Sebastian – Mihai IANCU la de

C INTERFACE-MATLAB-SIMULINK „FOR AUTOMATIC GENERATION OF OPTIMIZED INDUCTION MACHINE’S CHARACTERISTICS WITH THE” IND” SOFTWARE

 

In knowledge, modeling, simulation and numerical solving of the transitory regimes from the operation of the induction machine, becomes necessary, useful and appropriate to develop specialized algorithms of calculation and versatile software interfaces, with low response time and resource-consuming IT. We achieved a C interface-MATLAB callable standalone, or integrated, for plotting the characteristics. The interface allows the interconnection, if necessary, with other FORTRAN modules, SIMULINK, FEMM.

 

Keywords: C-MATLAB-Simulink induction machine, software, graphics

Cuvinte cheie: C-MATLAB-Simulink, mașină de inducție, software, grafică

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31-42 INTERFAȚĂ ”C-MATLAB-SIMULINK” PENTRU SOLUȚIONAREA UNOR REGIMURI TRANZITORII LA MAȘINA DE INDUCȚIE, CU GENERARE AUTOMATĂ GRAFICĂ A CARACTERISTICILOR

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Gheorghe VERTAN Lucian-Corneliu OCOLIŞAN Sebastian – Mihai IANCU la de

C-MATLAB-SIMULINK INTERFACE FOR SOLVING OF

SOME TRANSITORY REGIMES AT THE INDUCTION MACHINE WITH AUTOMATIC GENERATION

OF GRAPHICAL CHARACTERISTICS

 

In knowledge, modelling, simulation and numerical solving of the transitory regimes from the operation of the induction machine, becomes necessary, useful and appropriate to develop specialized algorithms of calculation and versatile software interfaces, with low response time and resource-consuming IT. We achieved a C interface-MATLAB callable standalone, or integrated, for plotting the characteristics. The interface allows the interconnection, if necessary, with other FORTRAN modules, SIMULINK, FEMM.

Keywords: C-MATLAB-Simulink induction machine, software, graphics

Cuvinte cheie: C-MATLAB-Simulink, mașină de inducție, software, grafică

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31-41 ANALIZA EFECTULUI CORONA ÎN REGIM TRANZITORIU DE SUPRATENSIUNE

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Cristian Paul CHIONCEL Nicoleta GILLICH la de

CORONA EFFECT IN TRANSIENT REGIME OF OVERVOLTAGES

 

The paper treats the quantitative and qualitative influence of Corona discharge on waveform in transient regime of over voltages propagation on electric aerial lines. The theoretical consideration given in the paper was compare with some measurements on real distribution line and results a satisfactory validity.

 

Keywords: Corona, overvoltage transient

Cuvinte cheie: efect Corona, supratensiuni, regim tranzitoriu

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31-40 ANALIZA CU ELEMENTE FINITE TRIDIMENSIONALE A MAŞINII SINCRONE HOMO-HETEROPOLARE UTILIZATĂ CA GENERATOR ÎN APLICAŢII EOLIENE SAU LA MICROHIDROCENTRALE

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Carmen MOTORGA Gabriel Nicolae POPA Lucian Nicolae TUTELEA Marcel TOPOR Maria NĂSĂUDEAN Petre Lucian GHERMAN Sorin Ioan DEACONU la de

3D FEM VALIDATION OF HOMO-HETEROPOLAR SYNCHRONOUS MACHINE FOR WIND OR HYDRO APPLICATIONS

 

In an effort to introduce a low cost (PM less), low power electric wind or hydro generators, this paper reports on preliminary design aspects, 3D FEM analysis of a 2.5 KVA, 250-1000 rpm, reactive homo-heteropolar brushless synchronous machine (RHHBSM).

 

Keywords: three-dimensional finite element analysis, homo-heteropolar synchronous machine rotating excitation stator applications reduced wind power, small hydro

 

Cuvinte cheie: analiza cu element finit tridimensională, maşină sincronă homo-heteropolară rotativă, excitaţie statorică, aplicaţii eoliene de putere redusă, microhidrocentrale

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31-39 STUDII ȘI CERCETĂRI ALE TENDINȚELOR DE INVESTIȚIE ECONOMICĂ ȘI CONVERSIE A ENERGIEI PE PLAN INTERN ȘI INTERNAȚIONAL

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Doru Laurean BĂLDEAN Ioan Aurel CHERECHEŞ Laura-Nicoleta COVACIU la de

Studies and researches of the tendencies in economic investments and energy conversion

on national and international level

 

This scientific paper outlines the statistical data and studies made on energy (production and consumption), economical aspects and investment traces in correlation with the national and international entities. Professional forums and consumers look interested sometimes upon pragmatically oriented energy studies. They are interested about energy applications and its sources of production, since its costs and health impact is tightly correlated with it. In this context the data in the present scientific article and the analysed statistics, as well as the representing methodology and specific aspects are directed to match these expectations from general population, as well as the scientific and economic community.

 

Keywords: energy, economy, hydro, investment, power

Cuvinte cheie: energie, economie, hidro, investiție, putere

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31-38 DETERMINAREA VALORII OPTIME A PĂTURII DE CURENT PENTRU GENERATOARE SINCRONE

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Elisabeta SPUNEI Ion PIROI la de

DETERMINING THE OPTIMAL LINIAR CURRENT

DENSITY VALUE FOR SYNCHRONOUS

GENERATORS

 

 

This work presents the way linear current density values influences the dimensions, costs, and performances of some synchronous generators. The studied generators, with various rated speed, were designed following classic and optimal methods in order to determine the linear current density optimal value depending on a specific optimization criterion. The optimal design has been realized with the Simplex algorithm where the objective function aims total cost reduction for the synchronous generator. The linear current density value has been determined for both the classical design and for the optimized solution. Comparing the two results we analysed the impact these variable has on the synchronous generator’s dimensions, mass, losses, on the generator’s efficiency, costs, and flask currents. We draw conclusions referring to the optimal value tendency for the linear current density depending on its variation interval and on the generator’s rotation speed.

From the analysis we observe that to achieve a cost-optimal synchronous generator, the linear current density value must be chosen close to the upper limit of the variation interval.

 

Keywords: the objective function, the optimal design, synchronous generator, current blanket

Cuvinte cheie: funcţie obiectiv, proiectare optimală, generator sincron, pătura de curent

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31-37 PIERDERILE PE LINIA DE ALIMENTARE A UNUI CONSUMATOR TRIFAZAT LEGAT ÎN STEA

Această intrare a fost publicată în 2017 Volumul 31 și etichetată Vasile Mircea POPA la de

THE SUPPLY LINE LOSS OF A  THREE-PHASE LOAD IN STAR CONNECTION

 

The electrical power system usually operated in a symmetrical three-phase steady state mode. But, there are certain situations that can cause non-symmetrical operations. The presence of the unbalanced three-phased loads induce the apparition of  the non-symmetrical systems involving currents and voltages as well the extra-loss within the supply wire. In this work we present a mathematical proof in Mathcad of additional losses in the electrical energy transmission line working under non-symmetrical conditions. Was considered a simplified model in star connection, but the obtained result generalizes to complex electrical circuits. Finally, we  show the conclusions and references.

 

Keywords: three-phase load, star connection, active power, electrical energy transmission line, supply line loss, unbalanced functioning regime, mathematical proof in the Mathcad of additional losses under unbalanced conditions

Cuvinte cheie: receptor trifazat, conexiune în stea, putere activă, linie de transport a energiei electrice, pierderi pe linia de alimentare, regim dezechilibrat de funcţionare, demonstraţie matematică în mediul Mathcad a pierderilor suplimentare în regim dezechilibrat

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