Patent ID: 6732708
Filing Date: 2004-05-11
Classification: F02D,F02P

Abstract:
An automotive engine control apparatus for controlling an automotive engine including injection coils capable of driving fuel injection electromagnetic valves with respect to the respective cylinders of a multi-cylinder engine, and ignition apparatuses provided with the respective cylinders, for performing ignition operations with respect to injected fuel comprising:control means for controlling an internal operation of the automotive engine control apparatus; a first switch element for sequentially driving said respective injection coils in response to a pulse series of an ignition drive signal generated by said control means; a first detection circuit for detecting that at least said injection coils are turned ON/OFF; first abnormal state judging means for comparing a detection signal derived from said first detection circuit with said injection drive signal in order to judge whether or not said injection coils are operated under the normal state with respect to each of said cylinders; first abnormal state storage means for storing thereinto a judgment result obtained by said first abnormal state judging means with respect to each of said cylinders; a second switch element for sequentially driving said respective ignition apparatuses in response to a pulse series of an ignition drive signal generated by said control means; a second detection circuit for detecting that at least said respective ignition apparatuses are turned ON/OFF; second abnormal state judging means for comparing a detection signal derived from said second detection circuit with said ignition drive signal to judge whether or not the ignition apparatuses are operated under the normal state with respect to each of said cylinders; second abnormal state storage means for storing thereinto a judgment result obtained by said second abnormal state judging means with respect to each of said cylinders; drive stopping means for stopping both the fuel injection operation and the ignition drive operation as to a cylinder operated under the abnormal state, which is stored into any one of said first and said second abnormal state storage means; and storage prohibiting means operated in such a manner that when any one of said first and said second abnormal state storage means stores thereinto the judgment result of said cylinder operated under the abnormal state, the other of said first and said second abnormal state storage means is prohibited from storing thereinto said judgment result.