Engine idle control

Details Engine idle control Engine idle control

1995-09-20

2000-11-07

Yuen, Henry C.

Internal-combustion engines

Engine speed regulator

Idle speed control

123 73A, 12333913, F02M 3510, F02M 312

Patent

active

061421189

ABSTRACT:
An engine idle and speed control arrangement incorporating a butterfly-type throttle valve. The throttle valve is disposed so that it is at a relatively small angle to a plane containing the throttle valve axis and extending perpendicular to the direction of air flow through the induction passage. The peripheral edge of the throttle valve is configured so as to avoid binding. Bypass idle air flow is provided around the throttle valve as to provide substantially the entire idle air speed requirements of the engine. This arrangement permits better idle control since the idle air-flow changes will be more uniform in response to given angular changes in the position of the throttle valve.

REFERENCES:
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patent: 4438049 (1984-03-01), Ammons
patent: 4438745 (1984-03-01), Watanabe
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patent: 4966122 (1990-10-01), Frinzel
patent: 5282448 (1994-02-01), Reinke et al.
patent: 5522362 (1996-06-01), Motose

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