Arhive zilnice: mai 4, 2017


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

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

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

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

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)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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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