Deere & Company

Douglas T Corbett

Francois Stander

Steven Ryan Whiteman

Manish M Kute

Jeremy B Shuler

David F Rindfleisch

Zakir H Faruquee

Nitin Dewangan

Kishan Trivedi

An integrated vehicle and battery thermal management system for an electric work machine may include a battery module, a radiator, a fan to move air across the radiator, a battery coolant loop including a coolant pump, a refrigerant loop including a compressor, and a chiller providing heat transfer from the battery coolant loop to the refrigerant loop. A controller is operably connected to the coolant pump, the compressor and the fan and is configured to provide a passive cooling mode, a semi-passive cooling mode, and an active cooling mode, dependent upon monitored temperatures in the system.

Integrated vehicle and battery thermal management of an electric excavator

A method for controlling vehicle speed comprises sensing a position of an operator input, engaging a retarder upon the position falling below a first threshold, modifying a retarding force exerted by the retarder based on the position while the retarder is engaged and the position is below a second threshold, and disengaging the retarder upon the position rising above the second threshold.

Vehicle speed control

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Dubuque, IA, United States of America

Douglas T Corbett