Intake system for engine

Details Intake system for engine Intake system for engine

1986-08-01

1988-01-05

Wolfe, Jr., Willis R.

Internal-combustion engines

Engine speed regulator

Idle speed control

123588, 123587, F02M 312

Patent

active

047168714

ABSTRACT:
In an intake system having a bypass passage for introducing auxiliary air to the engine, a base amount of auxiliary air is first determined according to the engine operating condition. A target idling speed is calculated according to the engine temperature and the engine load and the target idling speed is compared with the actual engine speed. The base amount of auxiliary air is corrected according to the difference between the target idling speed and the actual engine speed, thereby obtaining a final target amount of auxiliary air. The control amount of the control valve is determined according to the final target amount of auxiliary air referring the final target amount of auxiliary air to the output characteristics of the control valve. Then the control valve is driven on the basis of the control amount.

REFERENCES:
patent: 4425886 (1984-01-01), Kuroiwa et al.
patent: 4484553 (1984-11-01), Kobayashi et al.
patent: 4562808 (1986-01-01), Tominaga et al.
patent: 4563989 (1986-01-01), Peter

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