Lucian FECHETE


34-23 ANALIZA ASPECTELOR PRACTICE PRIVITOARE LA MANAGEMENTUL ENERGETIC ÎN CAZUL UNOR SIMPTOME SPECIFICE PENTRU SISTEMUL DE PORNIRE DE LA TOYOTA AVENSIS

ANALYZE OF THE PRACTICAL ASPECTS CONCERNING THE ENERGETIC MANAGEMENT IN THE CASE OF SPECIFIC SIMPTOMS FOR THE START
SYSTEM FROM TOYOTA AVENSIS
The present paper presents in known technical terms and methods from practical operations the problematic aspects concerning the energy supply to the start system from Toyota Avensis 1.6 MPI car. After a period of optimal functionality, the start system shows signs of bad operation and some symptoms occur which lead to the questioning of the electric energy management regarding the starting procedure. The worst situation is if the thermal engine suddenly stops in the street and after this there is no possibility to restart it in that moment. First the battery is replaced just to make sure there is enough energy supply. But the problem reappears. Analysing the power supply system allows us to get the insight of the procedure and also to develop a strategy in solving the problem by studying the specific symptoms. The present paper aims the goal of outlining the symptoms and problematic aspects related to the energy management in the start system of Toyota Avensis.
Keywords: electromotor, electricity, energy, power-supply, Toyota
Cuvinte cheie: demaror, electricitate, energie, încărcare, Toyota

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34-19 CERCETAREA FACTORILOR CAUZALI DE UZURĂ ȘI A CARACTERISTICILOR ULEIULUI ÎN CAZUL ALIMENTĂRII CU BIOCOMBUSTIBILI A MOTOARELOR PENTRU MAȘINI AGRICOLE

RESEARCH OF WEAR CAUSING FACTORS AND LUBRICANT CHARACTERISTICS IN CASE OF BIO-FUEL SUPPLY TO THE AGRICULTURE MACHINE’S ENGINE
Lubricants and fuels are used in over a billion machines. All of them are used in different operating regimes. Because the viscosity and density of engine’s fluids are different in each case, operating conditions are significantly changed. This idea underlines the specific engine operating conditions when performing actual tasks in agriculture. The fuel-lubricant interaction study leads to solutions regarding the wear problem. Experiments show the problems and also the optimal solutions. Agricultural machine lubrication takes part in determining the reliability and durability. Biofuel-adds in commercial fuel is now common practice and an actual task on agricultural engineering is machines life span. Biodiesel may be used alone or in mixtures with other fuels, either fossil diesel or alternative solutions. The content of biodiesel in commercial fuels throughout the European Union is under 15 percent, but it is supposed to increase toward 20 percent. So, we have to analyse the influence that biodiesel has in lubrication and in component wear. In this study were developed experiments concerning the biofuel use and influence on lubricants in various situations, determined by complex analyse of available data from applied research. There were changes in carbon deposits and quality of lubrication. Biodiesel influenced the lubricant composition.
Keywords: agriculture, biodiesel, biofuel, engine, machine
Cuvinte cheie: agricultură, biodiesel, biocombustibil, motor, utilaj

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33-33 CONTRIBUȚII LA CERCETAREA APLICATIVĂ A SISTEMULUI DE PORNIRE DE LA DACIA LOGAN ÎN VEDEREA EVIDENȚIERII ASPECTELOR SIMPTOMATICE

CONTRIBUTIONS TO APPLIED RESEARCH OF THE START SYSTEM FROM DACIA LOGAN IN ORDER TO OUTLINE
THE SIMPTOMATIC ASPECTS
The present study outlines the problems which may appear with the starter system in the case of vehicles in exploitation. After many starting procedures the starter motor wear out and doesn’t work properly, making the vehicle use and pre-operation sequences more and more difficult. The worst case scenario is when starter stops suddenly in the middle of a junction without symptoms and as an aggravating aspect with impossibility to restart immediately. Analyzing the starting system and complex assembly of components allows the engineers to obtain some significant knowledge in the intricate character of optimal functionality in order to develop proper know-how and skills in repairing the system or solving the problem once it has appeared. The development of present work has the purpose to define the starting system and the methods for saving energy and time in the process of application or switching the engine’s turn on procedures. The paper experimental part points out some of the significant symptoms and problems related to the electric starter motor and internal combustion engine starting system on Dacia Logan sedan.
Keywords: automation, electro-mechanics, electromotor, i.c.e., starter
Cuvinte cheie: automatizare, electromecanică, electromotor, m.a.i., pornire

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