BorgWarner wet clutch and HCM used in hybrid transmission for made-in-China Buick GL8

BorgWarner has announced supply of its wet clutch and hydraulic control module for the two-speed hybrid transmission of Buick’s brand-new GL8 PHEV van, with production having begun in June 2024. As the first large and medium-sized plug-in hybrid transmission produced by General Motors in China for the Chinese market, BorgWarner's efficiency-enhancing wet clutch and hydraulic control module will contribute to setting a new benchmark for plug-in hybrids.

The Buick GL8 Luzun plug-in-hybrid. 

“The Chinese market for new energy vehicles is rapidly evolving, demanding various innovative technologies. We’re delighted to contribute the wet clutch and hydraulic control module for the two-speed hybrid transmission of Buick’s GL8 to enhance its performance,” said Isabelle McKenzie, vice-president of BorgWarner Inc and president and GM (Drivetrain and Morse Systems). “This collaboration with Buick not only showcases BorgWarner’s technical prowess but also underscores our capability for local R&D in China.”

The wet clutch for the two-speed hybrid transmission enhances system efficiency through low drag torque, featuring a compact axial and radial design, and utilizing BorgWarner’s state-of-the-art friction technology to ensure highest reliability. The hydraulic control module for the two-speed hybrid transmission offers advantages such as a wide pressure adjustment range, high control precision, low leakage, and high efficiency. With a compact and lightweight design, it facilitates clutch pressure control and cooling for the clutch and electrical motor and integrates the tandem E- pump and temperature sensor.