Exhaust Valve Clutch Pressure
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2007 MINI Cooper, 2006 MINI Cooper, 2005 MINI Cooper, 2004 MINI Cooper, and 2003 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.
The exhaust valve clutch pressure has two main functions:
- Limit the maximum clutch pressure.
- Protection of the gearbox from abuse.
The clutch pressure is bled into the exhaust valve, otherwise, with increasing engine speed; the pressure would limit the minimum secondary pressure too much, which would adversely affect fuel economy and could lead to damage within the gearbox.