BorgWarner has entered into a global agreement to supply its eTurbo to an unnamed European OEM for use in a high-voltage hybrid passenger car.

BorgWarner’s electric boosting technology provides engine efficiency and performance benefits, while also enabling the automotive manufacturer to meet increasingly strict emissions regulations.

This will be the company’s first application of its electrically assisted turbocharger in a high-voltage hybrid vehicle.

“Our eTurbo is a single machine solution with integrated power electronics able to deliver robust electrified boost assistance and recuperation to a wide range of vehicles,” said BorgWarner Emissions, Thermal and Turbo Systems president and GM, Joe Fadool.

“BorgWarner has a long, productive history with this manufacturer, and we are excited to deliver enhanced engine efficiency and performance to our client through this 400V hybrid application.”

The eTurbo is a mechanical turbocharger equipped with an ultra-high-speed electric motor coupled directly to the shaft. Customers have the choice of integrated or semi-integrated power electronics. BorgWarner’s solution provides the additional benefit of electrified boost assistance for enhanced response along with customary turbocharger advantages.

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The supplier adds it delivers more than 200% faster transient boost response, along with a 50% reduction in time-to-torque, nearly eliminating turbo lag and further supporting engine downsizing. The electrified turbocharger is suited for Miller cycle engine concepts, delivering both improved fuel economy and reduced emissions without any loss of performance.

BorgWarner’s eTurbo can also serve as a generator, able to collect excess exhaust energy and convert it into electrical energy. Repurposing the energy is effective for accessory power or charging the battery, even enabling the use of a smaller battery size. Additional benefits of the boosting technology include its ability to decrease emissions through after-treatment management and air-fuel ratio control.

By having the capability to increase engine backpressure to reduce emissions, the eTurbo also supports on-demand exhaust gas recirculation.

High-voltage hybrid vehicle production with BorgWarner’s electrified turbocharger is expected to start in September, 2023.