Apparatus for controlling an air-fuel ratio in an internal combu

Details Apparatus for controlling an air-fuel ratio in an internal combu Apparatus for controlling an air-fuel ratio in an internal combu

1990-04-04

1991-10-15

Dolinar, Andrew M.

Internal-combustion engines

Charge forming device

Fuel injection system

123489, 123308, F02D 4110

Patent

active

050564919

ABSTRACT:
An air-fuel ratio control system in an internal combustion engine, whereby an acceleration condition is detected to obtain an enrichment correction of a fuel injection amount. An occurrence of a mild acceleration is detected by calculating a value of a rate of change in a parameter of an engine load, such as a degree of opening of a throttle value, between adjacent timings, accumulating values of the rate of change of the engine load parameter during a sampling period, and comparing the accumulated value with a predetermined threshold value.

REFERENCES:
patent: 4598678 (1986-07-01), Kobayashi et al.
patent: 4682577 (1987-07-01), Kato et al.
patent: 4753200 (1988-06-01), Kawamura et al.
patent: 4841937 (1989-06-01), Nagaishi

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