Electro-hydraulic actuator for AWD systems

  • 12-Dec-2011 08:42 EST
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Using a hydraulic power pack, the BorgWarner centrifugal electro-hydraulic (CEH) actuator for all-wheel drive systems eliminates several costly and complex parts such as the accumulator, solenoid, and filter, while delivering control accuracy and quick response. According to the company, fewer parts result in lower costs, 20-30% less driveline mass than comparable technologies, and improved fuel economy. Driven by an electric motor, an axial pump with a patented centrifugal pressure regulator directly controls hydraulic pressure to the all-wheel drive clutch. The actuator, which is slated to debut with major global automakers in 2012, also features an automatic recalibration function that re-adjusts the system without any input from the driver.

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