Effects of Combustion Chamber Profile on Direct Injection Diesel Engine Operated with SuOME

摘要

Present work is focused on experimental investigation of performance, combustion and emission of DI diesel engine using Simarouba Oil Methyl Ester (SuOME). Control of combustion process in order to achieve better performance with reduced emission has been achieved by varying the shape of combustion chamber. In order to study the effect of shapes of different combustion chambers on performance of diesel engine, Toroidal Re-entrant Combustion Chamber (TRCC), Lateral Swirl Combustion Chamber (LSCC), Dual Swirl Combustion Chamber (DSCC) and Lateral Dual Swirl Combustion Chamber (LDSCC) were developed without changing compression ratio of standard diesel engine. Experiments were carried out using optimum injection timing of 27~0bTDC, injector opening pressure of 240 bar and nozzle geometry of 6 holes with 0.2 mm diameter. Results of DI diesel engine operated with SuOME revealed that the LSDCC shape resulted in improved engine brake thermal efficiency with minimum HC and CO emission levels compared to other selected combustion chamber shapes.