Throttle default system

Details Throttle default system Throttle default system

2007-09-11

2007-09-11

Argenbright, T. M. (Department: 3747)

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

C123S399000

Reexamination Certificate

active

11252172

ABSTRACT:
An electronic throttle control unit includes an air bypass channel having a removable obstruction that opens in response to receiving an electronic throttle control fault signal and thereby allowing the vehicle a limp home condition. The throttle plate defaults to a fully closed position upon engine-off to substantially prevent evaporation and escape of hydrocarbons from the intake manifold to the atmosphere.

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