Engine idling rotational speed control device

Details Engine idling rotational speed control device Engine idling rotational speed control device

1982-08-11

1984-07-31

Dolinar, Andrew M.

Internal-combustion engines

Engine speed regulator

Idle speed control

123340, 123352, F02D 3300

Patent

active

044623607

ABSTRACT:
A stepping motor is driven to control an opening area of an intake air flow rate control valve such that an engine rotational speed in a substantially full-close position of a throttle valve is brought into a target rotational speed range related to at least an engine coolant temperature. An intake air quantity into an engine and engine rotational speed are detected to determine a ratio of the intake air quantity to the engine rotational speed. Downward control to the intake air flow rate control valve is inhibited when a ratio of intake air quantity into an engine to the engine rotational speed is smaller than a predetermined reference.

REFERENCES:
patent: 4191051 (1980-03-01), Kawata et al.
patent: 4237833 (1980-12-01), Des Lauriers
patent: 4306527 (1981-12-01), Kinugawa et al.
patent: 4378768 (1983-04-01), Itoh et al.

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