Internal combustion engine with throttle tipout dilution reducti

Details Internal combustion engine with throttle tipout dilution reducti Internal combustion engine with throttle tipout dilution reducti

1987-03-10

1988-01-19

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

F02M 2506

Patent

active

047198931

ABSTRACT:
An internal combustion engine with a throttle valve, fuel supply and dilution (EGR) control includes apparatus effective to detect a throttle tipout condition comprising a rate of throttle closing exceeding a predetermined reference rate and decrease the dilution from the scheduled value to its minimum value during the existence of the throttle tipout condition and further apparatus effective to detect the end of the throttle tipout condition and return the dilution to its scheduled value at a controlled rate. Thus, a sudden unscheduled increase in dilution caused by a throttle tipout associated increase in intake manifold vacuum is reduced and driveability improved.

REFERENCES:
patent: 4280471 (1981-07-01), Masaki
patent: 4289108 (1981-09-01), Shioyama
patent: 4378777 (1983-04-01), Iida et al.
patent: 4548185 (1985-10-01), Pozniak
patent: 4630589 (1986-12-01), Hashiguchi et al.

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