| 摘要 |
PURPOSE:To obtain good engine respondence by a method in which injection starting time for injection cylinder in the warming-up period is determined by the amount injected previsouly by the cylinder, and the injection starting time of fuel is controlled so that all fuel injected can be supplied into the combustion chamber of an engine. CONSTITUTION:It is judged that an engine is in warming-up operation from output signal from a water temperature sensor 20. In order to supply all fuel quickly into the combustion chamber 3 by interrupting the adherence and staying of fuel injected from a fuel jet nozzle 14 on the inner wall surface of a suction port 6, a target crank angle to stop the injection of fuel long before a suction valve 5 is closed is preset. Next injection starting time of fuel is calculated from the fuel injection time (tau) is calculated in such a way that the injection action of all fuel is completed until the target crank angle is reached, and fuel injection starting time for the cylinder to inject fuel is set. Since the injection of fuel is completed before the suction valve 5 is closed during the warming-up period, most of fuel injected is supplied soon into the combustion chamber to secure good engine respondence. |
