| 摘要 |
An automotive type carburetor has a fast idle cam mechanism that provides a dual path of operation that includes one ramp for engagement with the throttle valve stop screw for progressively closing the throttle valve as a function of temperature increases towards the normal operating level, and a second ramp engagable by the stop screw for automatically indexing the stop screw for an automatic return of the fast idle cam to a high cam step position upon a restart of a cold engine without necessitating any action on the part of the vehicle driver other than to render operable the vehicle ignition system.
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