Compression ignition control by continuous intake and exhaust variable valve timing mechanism in premixed engine : Cycle simulation

The combustion method by premixed charge compression ignition has been investigated as the improvement method of thermal efficiency in internal combustion engine. In this paper, newly developed continuous intake and exhaust variable valve timing mechanism was applied to premixed charge compression ignition engine and it has verified by the cycle simulation about the influence of engine performance by the difference of air fuel ratio and valve timing in part load. Consequently, the possibility of control of EGR, high speed flow in intake valve and temperature in ignition timing have been shown by VVT.