Throttle valve return mechanism for engine throttle valve

Details Throttle valve return mechanism for engine throttle valve Throttle valve return mechanism for engine throttle valve

1995-03-02

1998-06-09

Ferensic, Denise L.

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

251313, F16K 122, F02B 7708

Patent

active

057620440

ABSTRACT:
A throttle valve for an air intake manifold of an internal combustion engine has a throttle barrel attached to the intake manifold, a valve plate rotatably mounted on a shaft therein, and a barrel outer half bushing integral with the throttle barrel. Connected to the shaft outside the throttle barrel is a throttle cam having an inner spring bushing integrally attached thereto and concentric with the shaft, as well as a cam outer half bushing, also integrally attached to the throttle cam and coaxially aligned with the barrel outer half bushing and which combines therewith to form an outer bushing. An outer return spring is mounted around an outer surface of the outer bushing with a first end positioned on a land stationary relative to the barrel and a second end mounted to a spring hook on the throttle cam. An inner return spring is mounted between the inner bushing and the outer bushing, likewise with a first inner spring end positioned in the slit and a second inner spring end mounted to the spring hook. An accelerator cable is attached to the throttle cam for rotating it, and thus the valve plate, to a desired position.

REFERENCES:
patent: 3927657 (1975-12-01), Mennesson
patent: 4576762 (1986-03-01), Griffin et al.
patent: 4579017 (1986-04-01), Nusser
patent: 4582653 (1986-04-01), Blanchard et al.
patent: 4625943 (1986-12-01), Groger
patent: 4880207 (1989-11-01), Matsumoto et al.
patent: 5168852 (1992-12-01), Moriguchi et al.
patent: 5275375 (1994-01-01), Semence

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