Effective Utilization of Waste Heat from Engine Exhaust Gas for Preheating the Fuel to Enhance the Performance of Diesel Engine

摘要

Fuels that replace the fossil diesel are the need of hour and at the same time should result in lower engine out emissions. Locally available honge biodiesel(BHO)was selected for their feasibility check as CI engine fuel and found a best option to replace the diesel by 100%. In the first phase,the study evaluates best fuel injection timing(IT)and injector opening pressure(IOP)for the biodiesel fuel(BDF)to yield best brake thermal efficiency(BTE)and revealed that BDF yielded best BTE at IT of 19° before top dead centre(bTDC)and IOP of 240 bar. In the second phase,the effect of preheating the BDF by utilizing the waste heat energy of exhaust gas on the performance of CI engine was studied with best BTE conditions. The study revealed that heating the BDF to 80°C,use of toriodal reentrant combustion chamber(TRCC)yielded the performance of CI engine similar to conventional operation with standard diesel.