Patent ID: 6834640
Filing Date: 2004-12-28
Classification: F02D,F02P

Abstract:
An automotive engine control apparatus for controlling an automotive engine equipped with injection coils capable of driving fuel injection electromagnetic valves with respect to the respective cylinders of a multi-cylinder engine, and ignition apparatus provided with the respective cylinders, for performing ignition operations with respect to injected fuel, wherein:each of said cylinders composes a cylinder group in conjunction with another cylinder thereof, the injection timing of which is separated by even-numbered timing from the injection timing of the first-mentioned cylinder; and said automotive engine control apparatus is comprised of: 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 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 there into 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 apparatus 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 apparatus 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 apparatus is operated under the normal state with respect to each of said cylinders; second abnormal state storage means for storing there into a judgment result obtained by said second abnormal state judging means with respect to each of said cylinders; and cylinder group drive stopping means for stopping both fuel injection operations and ignition drive operations related to a cylinder operated under the abnormal state which is stored into any one of said first and second abnormal state storage means, and also related to all of other cylinders which compose a cylinder group in conjunction with said cylinder operated under the abnormal state.