Idle air control valve stepper motor initialization technique

Details Idle air control valve stepper motor initialization technique Idle air control valve stepper motor initialization technique

2007-03-20

2007-03-20

Argenbright, T. M. (Department: 3747)

Internal-combustion engines

Engine speed regulator

Idle speed control

C123S339140

Reexamination Certificate

active

11180802

ABSTRACT:
A system for controlling idle air flow for an engine. The system includes an idle air control valve, a stepper motor, and a controller. The idle air control valve has a first hard stop and a second hard stop. The stepper motor is coupled to the idle air control valve and configured to manipulate the position of the idle air control valve. The controller is in communication with the stepper motor to provide a driving signal. Further, the controller is configured to drive the idle air control valve to the first hard stop and then drive the idle air control valve to the second hard stop after receiving an engine shutdown command.

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