Gm Global Technolgoy Operations, Inc.

Capacity of Texas, Inc.

Colin A Roberts

Kerfegar Khurshed Katrak

Paul Alan Bauerle

William Conrad Albertson

Mike M McDonald

Joseph M Stempnik

Kevin J Storch

Alfred E Spitza, Jr

Bruce A Rogers

Richard H Clutz

Richard L Tiberg

Matthew Squire

Robert Paul Black

William S Beggs

Bala K Murthy

Eric S Kaufman

Terrence E Connolly

An engine control system comprises a driver input module, a cylinder actuation module, and an active fuel management (AFM) module. The driver input module generates a fuel saver mode (FSM) signal having a first state based upon a driver input. The cylinder actuation module selectively disables at least one of a plurality of cylinders of an engine based upon a deactivation signal having a first state. The AFM module generates the deactivation signal based on at least one engine parameter and at least one threshold. The at least one threshold is modified when the FSM signal has the first state.

Engine control system for increased vehicle fuel economy

Systems and methods of driving and controlling pneumatic and hydraulic devices and, more particularly, to a system and method of driving a hydraulic pump via one output shaft of a motor, and driving a pneumatic compressor via another output shaft of the motor via a clutch. When a user control is engaged, a control system causes the motor to operate at a higher speed, driving the hydraulic pump faster to produce additional hydraulic pressure. When a low air pressure condition is sensed in the pneumatic system, the control system causes the motor to operate at the higher speed and engages the clutch, allowing the pneumatic compressor to supply additional air pressure.

System and method of driving and controlling pneumatic and hydraulic systems

A throttle control method includes generating a throttle request based on a drag torque request and setting a throttle command equal to the throttle request when the throttle request is less than a throttle idle maximum. A throttle maximum increase is determined when the throttle request is greater than the throttle idle maximum and the throttle command is determined based on the throttle maximum increase. The throttle is controlled based on the throttle command.

Electronic throttle control (ETC) drag torque request security

An engine fault diagnostic system includes a diagnostic module that generates a manifold absolute pressure (MAP) error signal and that generates a mass air flow (MAF) error signal. A security module generates an air flow fault when the MAP error signal exceeds a MAP threshold and the MAF error signal exceeds a MAF threshold.

Manifold air flow (MAF) and manifold absolute pressure (MAP) residual electronic throttle control (ETC) security

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Longview, TX, United States of America

Colin A Roberts