Gm Global Technolgoy Operations, Inc.

Stephen L Shen

Keith D Buford

Lawrence P Ziehr

Matthew Simonini

Paul S Lombardo

Jason J Nolte

Matthew J Martinchick

Jonathan K Williams

Christopher Ds Ballnik

Noise control for a vehicle is implemented by identifying sources of noise that are indicative of vehicle noise producing components. The sources of noise include a thermal management device of a hybrid-electric component of the vehicle and non-hybrid-electric components of the vehicle. The noise control is further implemented by determining a decibel value of the noise produced by each of the vehicle noise producing components, selecting the decibel value of one of the vehicle noise producing components having a highest decibel value as a mask limit, and determining an operational limit for the thermal management device. The operational limit includes a lowest threshold operating value which, when implemented, maintains a threshold level operating efficiency of the hybrid-electric component. If a decibel value of the noise produced by the thermal management device exceeds the mask limit, the noise control includes reducing a level of operation of the thermal management device to coincide with the decibel value of the operational limit.

Noise control of thermal components in a hybrid electric vehicle

Methods and systems are provided for thermally controlling a plurality of devices of a system using an element. The element is controlled in accordance with a first control strategy via a processor if a temperature of a first device of the plurality of devices is within a first range, a temperature of a second device of the plurality of devices is within a second range, and an inlet temperature of the system is within a third range. The element is controlled via the processor in accordance with a second control strategy via the processor if the temperature of the first device is not within the first range, the temperature of the second device is not within the second range, or the inlet temperature is not within the third range.

Thermal control of multiple devices

A method of operating a RESS thermal system in a vehicle having a coolant loop for directing a coolant through a RESS and a refrigerant loop configured to selectively cool the coolant flowing through a chiller in the coolant loop, including: determining a current target temperature range for the RESS based on a current vehicle operating mode and ambient temperature; determining a temperature of the RESS; determining if the temperature of the RESS needs to increase or decrease to be within the current target temperature range; if the determination is made that the temperature of the RESS needs to increase, determining if an active heating or a passive heating of the coolant will be employed, the active heating using a greater amount of energy over a shorter time period than the passive heating; and activating the determined active heating or passive heating of the coolant.

Thermal management controls for a vehicle having a rechargeable energy storage system

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Canton, MI, United States of America

Stephen L Shen