System Overview
The 8HPGSAX 8-gear automatic transmission is designed for vehicles with longitudinal engines and all-wheel drive.
It is a further development of the Audi AL552 (8HP6SA) transmission, with a new gear wheel set concept that minimizes drag losses and increases transmission efficiency.
System Function
The transmission features a wet multi-disc clutch actuated by a ball ramp system and an electric actuator with an integrated control unit.
It has a capacity of 1200 Nm in continuous operation, with short-term peak torques of 1400 Nm possible.
The transmission consists of 5 switching elements, including 3 revolving clutches and 2 fixed brakes, which are designed to reduce fuel consumption and CO2 emissions.
Manual:
Download: Porsche Cayenne Automatic Transmission 8HPGSAX System Description
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