| 摘要 |
PROBLEM TO BE SOLVED: To prevent an engine from being damaged due to a reduction of crank angle signal interval caused by an increase in the number of revolution of the engine, an increased amount of interruption treatment time carried out for every crank angle signal due to addition or improvement of control or occurrence of certain abnormal state at a micro-computer system.SOLUTION: An interruption treatment time carried out for every crank angle signal and an actual period of the crank angle signal are calculated in reference to a starting time and a finishing time of the interruption treatment carried out for every crank angle signal. The measured treatment time is compared with the previous treatment time, and a tolerance degree K is calculated in reference to a degree of increase or decrease of the calculated interruption treatment time. A time in which the tolerance degree K is subtracted from the interruption period is compared with the interruption treatment time and when the interruption treatment time is larger, supplying of fuel is stopped to enable an output of an engine 2 to be restricted. |
