Gm Global Technolgoy Operations, Inc.

Eric Brian Schutt

James R Yurgil

Keith D Van Maanen

Gregory J York

Addison T Solak

Brian P Hannon, Jr

An engine control system for an auto-stop/start vehicle includes an auto-stop/start module that generates an auto-stop command for shutting down an engine while an ignition is ON and subsequently generates an auto-start command for re-starting the engine. The system includes an actuator control module that disables an engine load, parks exhaust and intake cam phasers, disables fuel, sets a first throttle opening, monitors a crankshaft rotational position, speed, and deceleration, sets a second throttle opening for a predetermined duration if a piston simultaneously crosses a target position below a target engine speed and below a target degrees of rotation remaining, sets a third throttle opening, and determines if an engine speed is below a threshold speed before setting a fourth throttle opening when the engine speed is below the threshold speed, and causes the piston to rest in a predetermined position range.

Engine stop position control system and method

A control module of a vehicle comprises a drive diagnostic module and a power determination module. The drive diagnostic module determines a slip power of a belt based on engine speed, motor speed, and motor torque. The power determination module determines an accumulated power of the belt based on the slip power, the motor speed, and the motor torque. The control module diagnoses a condition of the belt based on the accumulated power.

Serpentine belt useful life monitor

A powertrain includes a rotary input member such as an engine crankshaft, a torque coupling such as a hydraulic torque converter, a drive plate, such as a flex plate or spider, connecting the input member to the coupling, and an annular generator rotor having an electrical power annulus, such as an annular induction member extending around the coupling, and a mounting ring fixed to the power annulus and including means extending inward for securing the mounting ring to the coupling and to the drive plate. Several embodiments of mounting rings and assemblies are disclosed which improve methods for assembly of the powertrain.

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Oxford, MI, United States of America

Eric Brian Schutt