Dependence of HCCI Combustion on Compression Ratio and Fuel Property in a Gasoline Direct Injection Engine

In this paper,multiple injection strategy and variable valve technology were utilized to achieve SI/HCCI hybrid combustion in a gasoline direct injection engine.The effect of HCCI combustion and emission on different compression ratios and fuel properties were investigated.The results show that gasoline HCCI combustion demonstrates single-stage heat release process.Ignition near TDC leads to lower…