The exploration of HCCI combustion in the high-power direct-injection diesel engine

In order to improve fuel economy and reduce diesel emissions, the high-pressure common rail direct injection diesel engine TBD234V6 was used as test machine in the research. From the formation of homogeneous pre-mixed gas and caught fire after a good effect of chemical reaction kinetics point of view, using the method of pre-injection and fuel design, the realization of HCCI (homogeneous charge compression ignition) combustion were studied. The results showed that: The pre-injection was effective in promoting the homogeneous mixture formation pre-ignition in the cylinder, with further promotion in the high-pressure common rail diesel engine´s potential; through fuel design can control the fuel ignition near TDC and increase the burning rate, it is conducive to realize efficient, low emissions approximately equal pressure premixed combustion.