STUDIES AND RESEARCHES OF THE NON-ALCOHOLIC STEATOHEPATITIS ON THE BASIS OF ENVIRONMENTAL AND BEHAVIORAL FACTORS WITH CONCERN IN ENERGETIC AND LIQUIDS CONSUMPTION
The present scientific article shows among other aspects also the state of the art on non-alcoholic-steato-hepatitis (NASH) and its diagnosis procedure, clinical course, evolution prognosis and therapeutic options available today. It may be pointed out that NASH is a benign although serious disease that has little to do with alcohol but which may lead ultimately to cirrhosis. Environmental factors due to pollution influence may have a contribution in this, as well as the behaviour and education. The present paper review some studies concerning the NASH conditions in the western world and in the same time analyses the relation between environmental state and the disease progress. The paper points out an applied effort on the environmental pollution problem impact on health.
Keywords: behaviour, environment, NASH, overweight, pollution
Cuvinte cheie: comportament, mediu, NASH, supraponderal, poluare
STUDIES AND RESEARCHES OF THE NON-ALCOHOLIC STEATOHEPATITIS ON THE BASIS OF ENVIRONMENTAL AND BEHAVIORAL FACTORS WITH CONCERN IN ENERGETIC AND LIQUIDS CONSUMPTION
CONTRIBUTIONS TO THE APPLIED RESEARCH OF EFFECTS FROM SURROUNDING ENVIRONMENT POLLUTION DUE TO ROAD TRAFFIC UPON EYES’ ANATOMY AND PATHOLOGY DEVELOPMENT
Air pollution due to road traffic and all automotive related industries influence the natural characteristics and composition of the earth’s atmosphere. Surrounding environmental pollution due to excessive road traffic is nowadays an important determining factor in health development and stability. Pollutants of major public health concern include particulate matter (PM), carbon monoxide (CO), ozone (O3), nitrogen dioxide (NO2), and sulphur dioxide (SO2) according to the World Health Organization (WHO). The present scientific article reviews some applied studies that investigated the adverse effects of air pollution on the ocular surface and also presents some SO2 experimental data recorded in Cluj-Napoca city in recent years. The paper summarizes an experimental work on the problem of pollution impact upon human health.
Keywords: air, environment, eye, pollution, ocular surface
Cuvinte cheie: aer, mediu, ochi, poluare, suprafaţa oculară
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
THE ROLE OF EDUCATION AND INTELLECTUAL TRAINING IN RELATIONSHIPS BETWEEN DORIN PAVEL AND LUCIAN BLAGA
This short paper outlines the role of education in human relationships, but mostly the one between Lucian Blaga and Dorin Pavel. The biographies of the two Romanian personalities help us realise how intellectual training gets developed within a lifetime. Dorin Pavel was Lucian Blaga’s nephew and he was born on May 31, 1900 in Sebes, as the son of a schoolteacher named Ion Pavel and his wife, Letiţia. In 1935 he became a professor at the Polytechnic University in Bucharest. On the other hand, Lucian Blaga was born on May 9, 1895 in Sebes, as the son of a priest. He became a poet and a philosopher.
Keywords: Dorin Pavel, Lucian Blaga, relationships, the role of education
Cuvinte-cheie: Dorin Pavel, Lucian Blaga, relaţii, rolul educaţiei
EXPERIMENTAL RESEARCHES OF CF MOTO 500- 5A/L7E
ATV’S DYNAMICS IN THE CASE OF TRAILER TOW
All-Terrain Vehicles are globally-spread nowadays both as entertaining
systems and as utility equipment. This paper presents a contribution to the
experimental research and graphical study of the data gained by developing a
practical protocol and methodology in order to monitor the kinematic and
dynamic parameters for three specific road surfaces, with all-terrain vehicle of
the type ATV CF MOTO 500-5A/L7e in the process of deceleration/acceleration
from different initial speed values. There were measured the braking distances
compared to the initial reference point and meanwhile were determined the
dynamic parameters of the ATV CF MOTO 500-5A/L7e during the
acceleration/deceleration process in the case of trailer towing, when a traction
force acts at the vehicle hook due to the 750 kg trailer. The opportunity of
researching this dynamic behavior is made possible by a research contract in
Technical University of Cluj-Napoca, showing that the trailer inertia force is
influencing both kinematics and dynamics during driving maneuvers of braking
and accelerating, as well as different conditions during usual ATV riding.
Keywords: ATV, dynamics, kinematics, inertia, trailer, speed
Cuvinte cheie: ATV, cinematică, dinamica, inerție, remorcă, viteză
RESEARCHES CONCERNING MODELING OF LUBRICATION
SYSTEM IN 3LD510 LOMBARDINI ENGINE
Lubricating system from any engine plays an significant role in
generating all of its dynamic performances. Fuel economy and energetic
performances from all compression ignition engines correlate with the working
degree of its lubricating system. The present work studies the mathematical
models of important phenomena from lubricating process. Compression ignition
engine lubrication process has a considerable part in influencing all sequences
of the working cycle and the components life duration. Some phenomena that
influence the lubricating process have a significant role in the engine durability
and consequently on pollution level. Environmental problem and engine’s
working time are significant problems for everyone in the present days. Human
life style has a specific relation with the ambient and modern engines. The
present article studies and outlines the influence of fuel type and engine’s
speed upon the compression ignition engine power losses, due to the
lubrication process through simulation and modeling. It is obvious that there are
very important factors which highly influence the quality of the lubricating
process and thus of the engine’s losses. In this study are presented the
variations and graphs of some important factors that are influenced by the
lubricating process in various situations, determined by complex analyze of
available data with a virtual model in simulation program.
Keywords: engine component, compression, fuel economy, lubrication, wear
Cuvinte cheie: componente motor, compresie, economie, lubrifiere, uzură
CONTRIBUTIONS TO THE EXPERIMENTAL RESEARCH
OF FUEL CONSUMPTION FOR RENAULT
The present paper summarize an experimental research and
comparative study of the data gained in field measurements concerning the fuel
consumption, average speed, location and economic behavior, in urban defined
road conditions and climate, with Renault Kangoo vehicle of the model year
2007 during the frequently START-STOP process in real environment engine
exploitation. There is evaluated the mileage measured from the initial reference
point and also the economic and ecologic behavior based on the fuel supply
process in the case of undertaking a specified track. The importance of the
present research is given by the fact that vehicle economy and dynamic loading
during some urban driving maneuvers have a great influence on environmental
impact when braking and taking off, also on a variety of normal situations.
Keywords: consumption, fuel, parameters, Kangoo, motorvehicle, Renault
Cuvinte cheie: consum, combustibil, parametri, Kangoo, autovehicul,
CONTRIBUTIONS TO THE EXPERIMENTAL EVALUATION OF
THE COMMON RAIL FUEL SUPPLY SYSTEM AND
CONSUMPTION FROM THE PEUGEOT 4007 SPORT UTILITY
The research paper outlines an experimental evaluation of the parameters
related to fuel consumption, engine speed, vehicle speed and environmental
temperature in different gear ratios and accelerator pedal positions, with sport
utility vehicle Peugeot 4007 during the urban driving process. There isn’t an
explicit study concerning the consumption and performance in urban driving
situation of the Peugeot 4007. There are many SUVs on the roads of our country,
but there should also be an interest concerning their fuel economy and
environmental impact. The engine and environment temperature, besides the
gear ratio and accelerator pedal position have a significant influence on the
engine’s economy and pollution. In the present paper it is studied the fuel
consumption of the engine when driving the Peugeot 4007 SUV in order to outline
the relation between the gear ratio, vehicle speed and fuel economy. The
collected data is accurately evaluated and observed.
Keywords: Combustion, Fuel, Injection, SUV, Peugeot, 4007
Cuvinte cheie: Ardere, Combustibil, Injecție, SUV, Puegeot, 4007
RESEARCH OF FUEL INJECTION SYSTEM
PARAMETERS FOR THE ENGINE OF BMW 320D
The present article makes an analyze through experimental research of
the parameters obtained from practical measurements related to fuel injection
supply, consumption, operating regime and engine speed, in different situations
and accelerator positions, with sport oriented vehicle of the type BMW series 3
during the operating process. There aren’t such explicitly developed studies
concerning the injection parameters of the E90 engine model of BMW 320d on the
national level. It is known that there are many such vehicles registered in our
country, there being a strong will to know their performances and operational status.
The injection and combustion besides the supercharging have a major influence
upon the engine’s dynamic performances, fuel economy and pollution. Testing and
studying the injection and air-fuel supply systems on BMW diesel engines may offer
engineering solutions and optimizing ideas in order to improve their environmental
impact and fuel economy, while the engine dynamic behavior will be little affected. In
this work it is developed a program for testing such a dynamic engine and for
collecting the injection and other systems parameters in order to facilitate their
operational understanding. The data is managed and accurately inspected and
Keywords: BMW, Consumption, Engine, Injection, Spray
Cuvinte cheie: BMW, consum de combustibil, motor, injecție, pulverizare
MASS OPTIMIZATION OF A FLAT PLATE SOLAR
Usually a flat plate solar collector is characterized by constructivefunctional
data, the mass of a solar collector is a constructive characteristic,
which influences more the assembling and transport costs. This paper presents
a method of optimizing the mass characteristics of a flat plate solar collector, by
using materials with low specific mass. As a result of this optimization a 17 kg
flat plate solar collector was realized, resulting in a weight reduction of
approximately 57 % compared to a common solar collector.
Keywords: solar collector plan, mass optimization, solar
Cuvinte cheie: captator solar plan, optimizare masică, energie solară
RESEARCH OF ACCELERATIONS AND TRACTION
FORCES OF ALL TERAIN VEHICLES
The present paper realizes an experimental research and comparative study of the results obtained from practical measurements with regard to acceleration, deceleration, stopping distance and dynamic behaviour, in various road conditions and surfaces, with all-terrain vehicle of the type ATV 500 CF Moto during the braking process when starting at various initial speeds. It is evaluated the stopping distance measured from the initial reference point and also the dynamic behaviour of the ATV CF-Moto 500 during the acceleration/deceleration process in the case of traction force at the rear end vehicle hook due to the 750 kg trailer. The need of studying this force is in that vehicle dynamic loading during some driving manoeuvres of braking and taking off, respectively a various situations during normal riding.
Keywords: ATV, acceleration, deceleration, traction, forces, braking
Cuvinte cheie: ATV, accelerare, decelerare, tracțiune, forțe, frânare
EVALUATION OF LABORATORY ANALYSIS OF LUBRICANTS AND LUBRICATING PROCESSES IN COMPRESSION IGNITED ENGINES’ MECHANISMS DEPENDING ON BIODIESEL CONTENT IN FUEL
Biodiesel use as fuel is a reality today. It is used in compression ignited engines throughout the entire planet. It may come alone or in mixtures with other fuels, either conventional ones or alternative solutions. Biodiesel itself is a bio-alternative solution for fossil fuels. In the present days the content of biodiesel in commercial fuels throughout the country does not exceed 10 %, but in the coming years it will increase toward 20 % and more. There have to be an extensive knowledge and scientific approach related to the effects that biodiesel has upon engine’s lubricants and lubrication processes. In this paper are presented some studies that were developed toward this specific objective and the significant conclusions which were made possible after the research. There are important influences of the biodiesel use as fuel even in the quality of engine lubrication process.
Keywords: biodiesel, lubrication, compression-ignition engines, engine lubricant, physic-chemical characteristics
THE ANALIZE OF SPECIFIC PARAMETERS FOR SPARK IGNITED ENGINE OPERATIONAL CYCLE DEPENDING ON ALTITUDE
The spark ignited engine is yet one of the most popular thermo-chemical energy converter worldwide used for propelling over 500 million cars today. Some of these vehicles are used in different geographic conditions that alter the engine operating regime usually by increasing fuel consumption and consequently the air pollution in order to maintain the torque and power output performances requested through the driver pedal. Because atmospheric pressure at high altitudes is lower in comparison with the see level, spark ignited engine’s operating conditions are tremendously changed in a 2000 meters of altitude range. The present paper unveils some of the particular engine operating conditions at different altitudes of the road and proposes some solutions and developing perspectives concerning the limitations and problems that occur during field operation. In order to obtain the same power and torque performances at any altitude level the engine operating parameters have to be the same at all times and at all altitudes. By field experimentation the research shows where the problems are; on the other hand, by analyze and interpretation it brings up the proper solutions to the inconveniences.
Keywords: intake, fuel injection, spark-ignited engine, engine performance