Ford Global Technolgoies, LLC

Mark C Evans

William Stewart Johnston

James C Rollinson

Steven Lee Lambert

Timothy Van Evans

Zhengyu Liu

Ali Jalilevand

Thomas A White

Jan Xu

Suhas Venkatappa

A vehicle cooling system may include a variable displacement compressor, and a controller configured to, in response to a determination that the compressor is operating within a gurgling zone that is defined by a predefined range of compressor speeds and currents, generate a current signal defining a displacement for the compressor based on a speed of the compressor and an ambient temperature to control the displacement to reduce refrigerant flow noise.

Variable displacement vehicle compressor with noise prevention control

A climate-control system for a vehicle includes a refrigerant subsystem having a chiller and an electronic expansion valve (EXV) arranged to selectively route refrigerant to the chiller. The vehicle further includes a coolant subsystem having conduit arranged to circulate coolant through a traction battery and the chiller. The coolant subsystem further includes a first temperature sensor configured to measure coolant circulating into an inlet side of the chiller and a second temperature sensor configured to measure coolant circulating out of an outlet side of the chiller. A vehicle controller is configured to, in response to the battery exceeding a threshold temperature and cabin air conditioning being requested, command opening of the EXV to a predetermined position and adjust the position based on a measured coolant temperature difference between the first temperature sensor and the second temperature sensor.

Battery chiller control with electronic expansion device

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Troy, MI, United States of America

Mark C Evans