Hybrid exhaust valve assembly

Details Hybrid exhaust valve assembly Hybrid exhaust valve assembly

2007-04-02

2008-07-22

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Engine speed regulator

Responsive to deceleration mode

C123S190140

Reexamination Certificate

active

07401592

ABSTRACT:
An exhaust valve assembly includes a flapper valve fixed to a valve shaft where the flapper valve is movable between a closed position, an intermediate position, and an open position. A resilient member biases the flapper valve toward the closed position. An electric actuator actively moves the flapper valve at least from the closed position to the intermediate position. A coupling mechanism couples the valve shaft to an electric actuator shaft and allows the flapper valve to move to the open position in response to exhaust flow sufficient to overcome a biasing force of the resilient member without requiring input from the electric actuator.

REFERENCES:
patent: 6135415 (2000-10-01), Kloda et al.
patent: 2006/0016427 (2006-01-01), Uda et al.
patent: 2006/0107922 (2006-05-01), Meistrick et al.
patent: 2006/0272322 (2006-12-01), Abram et al.

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