Gm Global Technolgoy Operations, Inc.

Terrence E Connolly

William Conrad Albertson

Mike M McDonald

Alfred E Spitza, Jr

Kevin J Storch

Richard H Clutz

Richard L Tiberg

Colin A Roberts

Robert Paul Black

William S Beggs

Eric S Kaufman

Bala K Murthy

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

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Rochester, MI, United States of America

Terrence E Connolly