Gm Global Technolgoy Operations, Inc.

Kevin T Sharples

Joseph M Stempnik

Paul Alan Bauerle

Christopher E Whitney

Kerfegar Khurshed Katrak

Jeffrey M Kaiser

Richard B Jess

Mark Henry Costin

Leonard G Wozniak

Timothy John Hartrey

Vivek Mehta

Bahram Younessi

Jinchun Peng

Bruce A Rogers

John A Jacobs

Sharon L Storch

Weixin Yan

David A Stamm

Matthew Squire

An engine system includes a throttle actuator module and a torque control module. The throttle actuator module controls a throttle actuator based on a desired throttle area. The torque control module determines an actuator torque. The torque control module determines a rate limited torque, a maximum torque, and a minimum torque based on the actuator torque and a predetermined rate of change. The torque control module determines the desired throttle area based on the actuator torque when the rate limited torque is greater than the maximum torque. The torque control module determines the desired throttle area based on the actuator torque when the rate limited torque is less than the minimum torque.

Securing throttle area in a coordinated torque control system

An engine control system that regulates operating of an engine of a motor vehicle includes a first module that determines whether a throttle of the motor vehicle is closed and a second module that determines whether the engine is idling while a cruise control is active. A third module selectively inhibits an RPM-based idle speed control of the engine if the throttle is closed and the engine is idling while the cruise control is active.

Cruise idle speed control to enhance low speed and light throttle drivability

An engine control system includes an ignition switch that selectively initiates an ignition signal and an operating mode of an engine. A powertrain relay selectively generates a PR load signal based on the ignition signal and the operating mode. A control module enables an ignition signal diagnostic system when the operating mode is a RUN mode, the ignition signal is generated and the PR load signal is generated.

Diagnostic coordination control

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Pinkney, MI, United States of America

Kevin T Sharples