| 摘要 |
PURPOSE:To ensure satisfactory acceleration performance since the first acceleration immediately after the completion of warming-up irrespective of the change with the passage of time by learning and correcting warming-up acceleration increment correcting value in response to the lean time of air fuel ratio when the air fuel ratio becomes lean in the increase of warming-up acceleration. CONSTITUTION:A control circuit 50 is provided in which the basic fuel injection amount is figured out according to the outputs of an air flow meter 14 and a crank angle sensor 44, while the output of valve opening time signal is sent to an injector 30 according to the outputs of an O2 sensor 40, a cooling water temperature sensor 46, etc. in addition to correction. In this case, fuel injection amount is increased up to the warming-up acceleration increment correcting value read out of a water temperature table in response to cooling water temperature immediately after acceleration according to the output of idle contact of a throttle sensor 24. In increasing this amount, when the air fuel ratio becomes lean, the warming-up acceleration increment correcting value is controllably learned and corrected in response to the lean time of air fuel ratio. |
