Fail safe throttle positioning system

Details Fail safe throttle positioning system Fail safe throttle positioning system

1994-02-28

1995-07-04

Wolfe, Willis R.

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

123399, 123403, F02D 1110, F02D 4122

Patent

active

054290902

ABSTRACT:
A fail-safe throttle positioning device is disclosed for an engine induction system. A throttle body is provided having a fluid passage. A movable throttle valve is disposed within the fluid passage for at least idle speed control. An actuator mechanism is connected to the throttle valve for operably moving the throttle valve between a minimum fluid flow position and a maximum fluid flow position. A fail-safe mechanism urges the throttle valve toward an intermediate position between the minimum and maximum fluid flow positions to prevent inoperability of the engine during failure of the actuator mechanism.

REFERENCES:
patent: 4879657 (1989-11-01), Tamura et al.
patent: 4892071 (1990-01-01), Asayama
patent: 5014666 (1991-05-01), Westenberger
patent: 5078110 (1992-01-01), Rodefeld
patent: 5233530 (1993-08-01), Shimada et al.
patent: 5235951 (1993-08-01), Taguchi et al.
patent: 5263448 (1993-11-01), Bluhm et al.
patent: 5325832 (1994-07-01), Maute et al.

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