| 摘要 |
PROBLEM TO BE SOLVED: To maintain an air fuel ratio in a good state even if an air cleaner is clogged in a fuel injection control device for an engine using a speed density method for fuel injection control. SOLUTION: The fuel injection control device for the engine performs fuel injection control in the speed density method for estimating intake air amount based on a detected engine speed value and intake pipe pressure value and determining fuel injection amount. An intake pipe pressure difference value between a continuously detected intake pipe pressure average value and an intake pipe pressure minimum value is calculated (A3). Fuel injection amount is corrected in a predetermined procedure by using the intake pipe pressure difference value, to prevent an air fuel ratio from becoming lean caused by clogging of the air cleaner and perform control. COPYRIGHT: (C)2009,JPO&INPIT |
