The article presents the results of research comparing the spray angles of the fuel jet and heat release of a PERKINS engine powered by mineral EKODIESEL fuel and, for comparison, vegetable-based fuels: FAME methyl ester and BIO-E-DIESEL ethanol. The use of fuels with different physicochemical properties in diesel engines requires high measurement accuracy of diagnostic parameters in order to understand the differences occurring in the injection and combustion processes of engines powered by these fuels.Meeting increasingly stringent standards for the emission of toxic exhaust components forces the modern user of compression-ignition internal combustion engines to possess fast and precise methods for assessing their technical condition, especially the combustion process and the technical condition of the injection equipment; experimentally determined charts of fuel pressure progression in the injection line and injector needle lift allow for the determination of the injection advance angle.
The research was conducted based on external speed characteristics using a dynamometer test bench equipped with a high-speed pressure measurement system. The fuel spray angle and ignition delay influence the combustion process, which is associated with the emission of toxic exhaust components into the environment. The studies demonstrated the advisability of conducting further research on fuel injection processes into the cylinder when powering the engine with both mineral and vegetable-based fuels. (…)
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Source: Logistyka Magazine 6/2009