| 摘要 |
An intake air temperature TC of a cylinder is estimated from an equation of TC=TA+HEXGIN (TA-TA)+273 DEG K on the basis of a cylinder heat-transfer coefficient HEXGIN, an intake air temperature TA and a cooling water temperature TW. An operation of a first correction coefficient KTA is carried out on the basis of an equation KTA=TTC/TC with the use of an intake air temperature TTC estimated under reference environment. Next, an operation of a finally correction coefficient KTAHOS is carried out on the basis of an equation of KTAHOS=KTAx[1.0-{(KTA-1.0)xKCHOS}] with the use of an air density fine adjustment coefficient KCHOS, and then, by taking advantage of the finally correction coefficient KTAHOS, a fuel injection quantity based on an intake air pressure is corrected.
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