초록 ▼

The intake flow velocity near the jet of a fuel injection valve is obtained on the basis of the engine rotational speed, engine intake air quantity and intake valve opening area. A crank angle position for maximum intake flow velocity is set as the timing for completion of fuel injection by the fuel

The intake flow velocity near the jet of a fuel injection valve is obtained on the basis of the engine rotational speed, engine intake air quantity and intake valve opening area. A crank angle position for maximum intake flow velocity is set as the timing for completion of fuel injection by the fuel injection valve. As a result, fuel injection can be reliably completed at a timing giving good fuel atomization characteristics.

대표청구항 ▼

An internal combustion engine fuel injection timing control apparatus characterized in comprising: fuel injection quantity computing means for computing a fuel injection quantity on the basis of the engine operating conditions; fuel supply control means for drive control of a fuel injection valve ac

An internal combustion engine fuel injection timing control apparatus characterized in comprising: fuel injection quantity computing means for computing a fuel injection quantity on the basis of the engine operating conditions; fuel supply control means for drive control of a fuel injection valve according to said fuel injection quantity so as to complete fuel injection at a predetermined injection end timing; intake flow velocity parameter detection means for detecting as parameters correlating with intake flow velocity, at least engine rotational speed, engine intake air quantity, and intake valve opening area; intake flow velocity determining means for obtaining an intake flow velocity near a jet of said fuel injection valve on the basis of said parameters detected by said intake flow velocity parameter detection means; and injection end timing varying means for variably setting a predetermined injection end timing in said fuel supply control means on the basis of the intake flow velocity obtained by said intake flow velocity determining means.