Patent ID: 9261431
Filing Date: 2016-02-16
CPC Classification: F02D,G01M,Y02T

Claim Text:
1. An engine control apparatus for controlling an engine, comprising: a stack detecting unit configured to detect a stack state in which a detected value of a sensor for detecting a combustion state of an engine does not change during a determination period based on a drive cycle of the engine; a count processing unit configured to count up a counter when the stack state is detected by the stack detecting unit during the determination period; a stack value storage control unit configured to allow a storage unit to store the detected value by the sensor when the stack state has been detected as a stack value in a case where the stack state is detected by the stack detecting unit during the determination period; and an abnormality determination unit configured to determine that the sensor has a stack abnormality when the count value by the count processing unit becomes equal to or more than an abnormality determination threshold, wherein the count processing unit does not count up the counter and does not reset the counter when the maximum value of the detected value of the sensor detected during the determination period is lower than a value stored in the storage unit and the stack state has not been detected by the stack detecting unit during the determination period.