Patent ID: 6032649
Filing Date: 2000-03-07
Classification: F02D,F02P

Abstract:
An engine control system comprising:a rotary body which rotates in association with a crankshaft of an engine and has portions to be detected spaced at predetermined angles wherein detection of said portions generates corresponding rotational angle time points and wherein at least one of said portions to be detected is missing;a first pickup, arranged near an outer periphery of said rotary body, for generating a pulse each time said portion to be detected passes;setting means for setting a time period prior to a control start time point to start a predetermined control of said engine, based upon one of said rotational angle time points; andtimer control means for allowing a timer to measure the time period prior to the control start time point while using a generation time point of the pulse that is generated from said first pickup as a reference,wherein when the time period prior to the control start time point using the rotational angle time point of said crankshaft when no pulse is generated from said first pickup due to the missing portion to be detected, is used as a references is set by said setting means, said timer control means allows said timer to measure the time from the generation time point of the pulse generated from said first pickup just before the non-pulse generation period of time during which no pulse is generated until the control start time point.