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Energy and environmental performance of compression ignition engines fueled with various fuels

Author: Beşleagă Igor
Degree:doctor of engineering
Speciality: 05.20.03 - Exploitation and Maintenance of Agricultural Machinery and Food Industry
Scientific adviser: Ion Lacusta
doctor, professor, Agrarian State University of Moldova
Institution: Agrarian State University of Moldova
Scientific council: DH 60-05.20.03-27.03.08
Agrarian State University of Moldova


The thesis was presented on the 9 December, 2010
Approved by NCAA on the 24 February, 2011


Adobe PDF document0.81 Mb / in romanian


Biofuels, Biodiesel, Catalyst, gas emissions, harmful gases, Methanol, Methyl Ester rapeseed, engine ignition, internal combustion engine, Diesel, carbon oxide, the renewable energy sources, transesterification, motor oil, kinematic viscosity


Thesis structure includes 3 chapters, introduction, timeliness of topic, back to literature, materials and methods, their results, discussion and interpretation, final conclusions, practical recommendations, annotations, abbreviations, appendices. Sentence is carried on 130 pages of basic text contains 20 tables, 47 figures, including diagrams and color photos, bibliography includes 144 references sources. Based on the investigations have been published 15 scientific papers including a manual.

Field of study. 05/20/2003: Operation and maintenance of agricultural machinery and the manufacturing industry.

Purpose and objectives of the paper. Aim is to evaluate the energy and environmental performance of compression ignition engines fueled with various fuels. Objectives: to study the physiochemical parameters of biofuel and engine oil in action, studying energy and environmental performance of diesel engine fueled with various fuels, studying the impact of biofuels on emissions.

Scientific significance and theoretical importance. They conducted a prospective study on the directions to use vegetable oils and their derivatives mono-type diesel supply, were evaluated the change regularities and physical-chemical parameters of engine oil exploitation in action in oilpowered engines rape and its derivatives mixed with diesel, was developed for obtaining biofuel cybernetic system and mathematical model of the transesterification process of rapeseed oil, was developed to calculate the heat of compression ignition engine fueled with a biofuel.

Scientific novelty of the results. It was argued experimentally using rapeseed oil and its derivatives in combination with diesel on energy and environmental performance, technical state of engine ignition. It was established correlation between the concentration of pollutants in exhaust emissions of the MAC supplied with different fuels. It was established that mixtures of diesel fuel - biofuel does not affect the roadworthiness of motor mechanism.

The practical value of the work and implementation of scientific research results. Were researched and implemented practical recommendations on the use of mono obtained by transesterification of rapeseed oil pure or mixed with diesel in compression ignition engine operation, improving the educational process and research by introducing new topics of theoretical courses and laboratory work the subjects' agricultural Chimotologia "," car service materials for students studying in the "Engineering and related activities.

Implementation of scientific results. The results were implemented in EDS 'Chetrosu "Anenii Noi district and Agricultural Engineering Department Teaching in automobiles and State Agrarian University of Moldova.