To improve control accuracy of fuel injection quantity by calculating valve lift quantity according to operation characteristics of an actual variable valve system.
This engine includes an electronic control device for program control, a means detecting crank angle, a means detecting actual lift quantity of an intake valve, and a mechanism varying lift quantity of the intake valve. The electronic control device determines an estimation value of the lift quantity per each crank angle corresponding to next control cycle per each prescribed crank angle, determines a component value of valve lift per the prescribed crank angle in the next control cycle from an estimation value of lift quantity per the prescribed crank angle, determines an estimation value of total lift quantity of the next control cycle by integrating the component value, and calculates injection quantity of fuel in the next control cycle based on the estimation value of the total lift quantity in the next control cycle.
IRIE SEIICHIRO
HIRABOSHI AKIFUMI
OMORI SATOSHI
IDE HIROHITO
