BorgWarner says it is supplying the electric auxiliary thermal coolant pump (ATCP) for a turbocharged compact SUV built by a major, unnamed Chinese automaker.

Featuring a brushless, no-leak, low-noise design with integrated microcontroller, BorgWarner adds its ATCP provides a continuous flow of coolant through auxiliary circuits even when the engine is shut down, helping auxiliary components maintain optimal operating temperature and contributing to longer component life, improved fuel economy and lower emissions.

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In the application, a 100-watt ATCP assists in turbocharger and indirect charge air cooling. “Turbocharged vehicles employ an auxiliary pump to optimise cooling efficiency,” said BorgWarner Thermal Systems president and general manager, Daniel Paterra.

“Vehicles with stop/start systems benefit from an auxiliary pump to maintain cabin temperatures when the engine shuts down.

“Electric and hybrid vehicles benefit from an auxiliary pump to improve driver comfort and keep batteries at a constant temperature to maximise driving range. BorgWarner’s ATCP supports all of these powertrains.

“BorgWarner is pleased to provide engineering and localised production from our campus in Ningbo, China, for a growing list of automakers.”

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BorgWarner’s family of ATCPs is designed for automotive and commercial vehicle voltage ranges to support a range of small- and medium-flow applications.

When the engine is running, an integrated microcontroller communicates directly with the engine controller to maintain optimum speed for engine conditions, from 0% to 100% depending on the application.

When the engine is off, the ATCP transmits heat to a heater core or heat exchanger to keep auxiliary systems working at optimal temperatures.

Featuring a brushless DC motor and floating rotor, BorgWarner says its ATCP delivers performance with very low noise.

The no-leak design does not require a face or lip seal, eliminating a high-wear component for improved durability.