Engine rotation speed control apparatus having auxiliary air con

Details Engine rotation speed control apparatus having auxiliary air con Engine rotation speed control apparatus having auxiliary air con

1991-01-09

1993-06-01

Lall, Parshotam S.

Boots, shoes, and leggings

36443107, 123339, 123585, F02M 2306, F02M 2308

Patent

active

052166104

ABSTRACT:
An engine speed control apparatus having an auxiliary air amount controller is disclosed. The apparatus has an actuator which is attached to an engine intake manifold so as to bypass a throttle valve and controls a flow rate of an auxiliary air and a control unit for driving the actuator. The control unit detects whether an engine is in an idling state or not on the basis of a combination of an engine rotational speed and other information. When the idling state is detected, a target value of an intake pressure on the downstream side of the throttle valve is set in accordance with the engine speed at that time. The control unit drives and controls the actuator so that the actual intake pressure coincides with the target value. Thus, when the operating mode of the engine is shifted from the non-idling state to the idling state, an air amount which is required by the engine can be accurately supplied and the engine speed can be rapidly converged to the target value.

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