초록 ▼

A method and apparatus for controlling the injection of fuel into an internal combustion engine having a plurality of unit injectors which are each controllable separately for each cylinder of the engine. The occurrence of a malfunction in the fuel injection of each of the injectors is discriminated

A method and apparatus for controlling the injection of fuel into an internal combustion engine having a plurality of unit injectors which are each controllable separately for each cylinder of the engine. The occurrence of a malfunction in the fuel injection of each of the injectors is discriminated in accordance with the engine operating condition detected by sensors whereby when the presence of a malfunction in the injector of any one of the cylinders is discriminated, the operation of the engine is not stopped but the operation is continued in a fault mode of operation so that the injection of fuel from the malfunctioning injector is stopped and the injection of fuel from the injector of at least one of the other cylinders is stopped or its number of events of injection is decreased from the standpoint of balance in the generation of engine power output.

대표청구항 ▼

A method of controlling the injection of fuel into an internal combustion engine having a plurality of unit injectors provided one for each cylinder of the engine and each responsive to electric signals to control the injection of fuel therefrom, said method comprising the steps of: detecting an ope

A method of controlling the injection of fuel into an internal combustion engine having a plurality of unit injectors provided one for each cylinder of the engine and each responsive to electric signals to control the injection of fuel therefrom, said method comprising the steps of: detecting an operating condition of said engine by sensor means; discriminating the presence or absence of a malfunction in the injection of fuel from each said injector in accordance with said engine operating condition detected by said sensor means; and supplying, upon discrimination of a malfunction in the injector of any one of said cylinders, to said malfunctioning injector electric control signals which are required for continued operation of said engine but different from those required for a normal operation of said engine, wherein said control signal supplying step supplies electric control signals for cutting off the injection of fuel to said malfunctioning injector and the injector of at least one of said cylinders has a particular order of arrangement relation with the order of arrangement of the other one of said cylinders associated with said malfunctioning injector from the standpoint of balance in the generation of power output.