Abstract
The material of this publication presents the results of a complex research into the application of standard rapseed methyl ester (RME) and new types of biodiesels produced from waste of vegetable oil and animal fat in the transport sector of Lithuania. The analytical analysis of physical, chemical and thermodynamical properties of biodiesels is performed and its results are evualated during the formation of tasks of experimental motor tests and research into mathematical modelling. Their influence for the paramaters of a working process and exploiting characteristics such as power, fuel economy, reliability and harmful emission of gases is evaluated.
Highlights
The solution of ecological problems on the international level strongly influences the development of new technologies, especially of a transport sector
The transference of maintained diesel fleets of Lithuania for the work on biodiesels and their blends with diesel fuel as the way of solving actual ecological and energetical problems is argued on an international level by the following facts:
The change of fossil diesel fuel to biodiesel is one of the effective ways to solve the problem of saving the recourses of energy and their rational use, which actuality is mentioned in 22 June 2005 “Green paper on energy efficiency” and EU Directive COM 739 final 2003/0300 (COD) on energy end-use efficiency and energy services. 2.The importance of national decisions for the change of fossil diesel fuel to biodiesel is argued by big difference of age and characteristic of renewability of the maintained diesel fleets of Western and Eastern Europe, what charges to look for own local decisions for ensuring of commitment of the requirements of the EU Directives
Summary
The solution of ecological problems on the international level strongly influences the development of new technologies, especially of a transport sector. Lower calorific value is applied to internal combustion engines which evaluate the loses of heat for the vaporisation of water appeared because of the oxidation of hydrogen of fuel This heat can be emitted only at the time of condensation of vapours in exhaust gases following the limits of a diesel engine. The density of biodiesel at 15 ̊C is 0,86–0,90 g/cm3 [17] and it is 2–7 % [2] higher value compared to diesel fuel (0,82–0,85 g/cm3 [13]) This factor positively influences the saving characteristics of the load of a diesel engine on the same level for the transference of diesel fleets for work on biodiesel without additional regulation of units of a fuel supplying system.
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