Detroit Diesel Corporation

Charles Chapin Blake

Jeffery Scott Hawkins

Matthew Thomas Baird

Steve M Weisman

Miguel Menoyo-Alonso

Darren P Aherne

Todd C Slater

Ronald William Mikulik

A method to operate a vehicle equipped with an electronic controlled internal combustion engine. The engine fan is used as a dynamic fan brake when the vehicle exceeds a minimum predetermined operating parameter for a predetermined period of time, and is disabled once the vehicle is operating within predetermined operating parameters.

System and method of fan control

A method and system for controlling an engine controller in response to actual vehicle load.

Method and system for controlling a vehicle powertrain based upon actual vehicle load

Various control strategies and techniques for controlling a variable speed fan in an internal combustion engine are provided. The various control techniques improve fuel economy by operating the fan at a speed sufficient to cool the engine, while avoiding unnecessarily higher speeds that result in poor fuel economy. Further, the fan may be completely disabled at cold start up to avoid over cooling, particularly in an engine using a charge air cooling system.

Method of controlling a variable speed fan

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Commerce, MI, United States of America

Charles Chapin Blake