Patent ID: 8855896

Claim:
An engine control system for an auto-stop/start vehicle, comprising: an auto-stop/start module that selectively generates an auto-stop command for shutting down an engine while an ignition is in an ON state and that selectively generates an auto-start command for re-starting the engine after the generation of the auto-stop command; and an actuator control module that, in response to the generation of the auto-stop command and before the generation of the auto-start command: disables fuel to the engine; closes a throttle valve to a predetermined idle throttle opening; maintains the throttle valve at the predetermined idle throttle opening until an engine speed is less than a predetermined speed; selectively opens the throttle valve with respect to the predetermined idle throttle opening when the engine speed is less than the predetermined speed; and closes the throttle valve to a fully closed position when a manifold absolute pressure (MAP) exceeds a predetermined pressure while the throttle valve is open with respect to the predetermined idle throttle opening.