System for detecting abnormality of a combustion engine

Details System for detecting abnormality of a combustion engine System for detecting abnormality of a combustion engine

1988-05-31

1989-07-25

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Fuel injection system

123486, F02D 4122

Patent

active

048503240

ABSTRACT:
A learning control system has a table storing learning coefficients in divisions thereof. An abnormality detecting system has a section for determining a number of updating times of coefficients in the table, and for determining a fact that a number of divisions in which each coefficient is out of a predetermined limit range is larger value than a predetermined second number. The section produces an abnormality signal when a coefficent exceeding the limit range in a particular division is updated a number of times more than a predetermined number of times. In accordance with the abnormality signal, all of coefficients in the table are held to a standard value.

REFERENCES:
patent: 4345561 (1982-08-01), Kondo et al.
patent: 4543937 (1985-10-01), Amano et al.
patent: 4644920 (1987-02-01), Abe et al.

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