| 摘要 |
PROBLEM TO BE SOLVED: To estimate an intake temperature after supercharging applicable to the estimation of an intake temperature after cooling, the detection of the cooling capacity or the like. SOLUTION: A microcomputer 42 of an ECU 16 calculates an intake temperature T2 after supercharging on the basis of an intake temperature T1 before supercharging as a detected value, the atmospheric pressure P1 and the intake pressure P2 after supercharging. Then a ventilating amount Va for cooling an intercooler 15 is calculated on the basis of a vehicle speed Vv, and a heat radiation coefficient Ki of the intercooler 15 is determined on the basis of the ventilating amount Va and the intake amount Ga. Further a heat radiation amount Qi is calculated on the basis of the heat radiation coefficient Ki, a radiation area Ai, the intake temperature T2 after supercharging and the intake temperature T1 before supercharging. Finally, an intake temperature T3 after cooling is calculated on the basis of the intake temperature T2 after supercharging, the heat radiation amount Qi, and the intake amount Ga. The microcomputer 42 corrects the fuel injection amount and the injection timing in controlling the fuel injection on the basis of the estimated intake temperature T3 after cooling.
|
