发明申请
US20090299610A1 CONTROL APPARATUS OF SPARK IGNITION INTERNAL COMBUSTION ENGINE 有权
火花点火内燃机的控制装置

CONTROL APPARATUS OF SPARK IGNITION INTERNAL COMBUSTION ENGINE
摘要:
In an in-cylinder injection type spark ignition internal combustion engine in which the intake air amount is controlled by use of an intake valve or an exhaust valve, which is provided with mainly a variable valve mechanism, instable combustion during a low-load operation is avoided without an increase in pumping loss (without a decrease in the thermal efficiency). In the in-cylinder injection type spark ignition internal combustion engine, during low-load operation, on the basis of the cooling water temperature of the engine the opening and closing timing of the intake valve is controlled in a retard angle manner and the opening and closing timing of the exhaust valve is controlled in an advance angle manner. Furthermore, the fuel injection timing is controlled in a retard angle manner on the basis of the retard angle amount of the intake valve opening and closing timing.
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