Process for shutoff of fuel injection during the deceleration ph

Details Process for shutoff of fuel injection during the deceleration ph Process for shutoff of fuel injection during the deceleration ph

1984-05-14

1985-12-17

Dolinar, Andrew M.

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

123326, 123493, F02D 500

Patent

active

045586721

ABSTRACT:
A process whereby fuel injection is interrupted in response to detection of a deceleration and injection is again ordered when a threshold linked to the engine speed is reached. The engine speed (N) or period of rotation (T) is measured from consecutive equal intervals or angles of rotation. A difference (.DELTA.T, .DELTA.N) is then computed between the value of the last measured speed or period and the value seen through a high-pass filter of the speed or period measured at the preceding interval. This difference (.DELTA.T, .DELTA.N) is compared with a fixed threshold (S) and if an engine deceleration condition is detected, fuel injection is again ordered when the difference (.DELTA.T, .DELTA.N) is greater than the threshold (S).

REFERENCES:
patent: 4327682 (1982-05-01), Harada
patent: 4414941 (1983-11-01), Nakanishi
patent: 4416240 (1983-11-01), Matsuoka

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