EGR technology

  • 19-Jun-2008 09:29 EDT
MAHLE EGR valve.jpg

 

Electrically driven exhaust gas recirculation (EGR) valves from Mahle enable metering and feedback concerning the current valve position and ensure the valves do not seize, even with pollution. Valves combine technologies, such as the electric drive with a dc motor, to achieve nonlinear characteristics with low actuating speed and high opening forces. According to the company, metering is optimized, realizing large valve cross sections for a high flow rate and preventing the valve from seizing. The design enables the valve to assume a defined fail-safe position in the event of an error. Mahle optionally offers EGR valves with integrated control electronics, including wear-resistant position sensors. The company also offers EGR technology based on a rotating fast-switching charge air valve.

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