Enhancement of combustion characteristics of VCR diesel engine by optimizing engine parameters

SN Applied Sciences

Prabhakara Rao Ganji¹  B. Karuna Kumar¹  Rajesh Khana Raju Vysyaraju²  Srinivasa Rao Surapaneni² 

[1] Department of Mechanical Engineering, Gudlavalleru Engineering College;Department of Mechanical Engineering, National Institute of Technology;

关键词: Compression ratio;    Exhaust gas recirculation;    Fuel injection pressure;    Start of injection;   

DOI  :  10.1007/s42452-021-04739-6

来源: DOAJ

【 摘 要 】

Abstract In recent years, engine emissions have been one of the important problems which are of great concern. Hence, there is a growing need to develop engines with reduced emission. In the present study, Variable Compression Ratio diesel engine model has been validated by comparing the simulation results with the experimental. The study is aimed at analyzing the effect of compression ratio, exhaust gas recirculation, fuel injection pressure and start of injection on engine performance and emission characteristics. Using composite desirability technique, the engine parameters have been optimized to achieve lower NOx, soot and ISFC. The optimum combination has been observed at Compression ratio 17.52, Start of injection −30.1 °aTDC, Fuel injection pressure 736.06 bar and Exhaust gas recirculation 28.29%. ISFC, NOx and soot are reduced by 2.37%, 29.11% and 83.81% respectively. Higher Target Fuel Distribution Index indicates the improved mixture homogeneity for the optimized parameters.

【 授权许可】

Unknown