BorgWarner reveals GM auto transmission innovations

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BorgWarner has revealed the range of technologies it has supplied to General Motors for the firm’s new 8-speed automatic transmission.

The company has supplied its Eco-Launch stop/start accumulator technology and multi-segment wet friction plates to GM for its 8L45 rear-wheel drive transmission unit.

To enable quick restarting when the stop/start is in action, BorgWarner says that its accumulator and Eco-Launch solenoid valve re-prime the transmission in less than 0.3 seconds, the time it takes the driver to switch from the brake to the accelerator.

The company also says that its multi-segment wet friction plate technology features full-depth grooves cut between segments of proprietary friction material to reduce drag and provide durability. The groove patterns and material are engineered for each specific application.

Overall, the company says the GM auto transmission offers a fuel economy improvement of up to 5% compared with similar 6-speed transmissions, thanks to such innovations.

Robin Kendrick, president and general manager of BorgWarner Transmission Systems, said, “Collaborating with GM on our latest friction plate solutions and ground-breaking innovations puts new technology on the road quickly. We are pleased to support GM in introducing another important transmission technology to the market.”

October 7, 2015 

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Dean has been with UKi Media & Events for over a decade, having previously cut his journalistic teeth writing and editing for various automotive and engineering titles. He combines extensive knowledge of all things automotive with a passion for driving, and experience testing countless new vehicles, engines and technologies around the world. As well as his role as editor-in-chief across a range of UKi's media titles, he is also co-chair of the judging panel of the International Engine + Powertrain of the Year Awards.

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