To provide an internal combustion engine that includes a variable compression ratio mechanism and a variable valve gear, and that can reduce fuel consumption.
The internal combustion engine includes the variable compression ratio mechanism and the variable valve gear, and is formed to advance a timing for closing an intake valve and reduce a mechanical compression ratio when a request load increases. The variable valve gear starts to advance the timing for closing the intake valve after a predetermined delay time passes since an increase of the request load is detected. The variable compression mechanism is formed to execute delay control of mechanical compression ratio, the control decelerates deterioration the mechanical compression ratio by almost maintaining the mechanical compression ratio, wherein the smaller the increase of the request load is, the more a start timing for the delay control of the mechanical compression ratio is accelerated.
FURUISHI AKIRO
WATANABE SATOSHI
KOBAYASHI DAISUKE
MORI JUNICHI
伊藤 公一
島田 哲郎
曽根 太樹
青木 篤
鶴田 準一