Mercedes-Benz OM 651 Service Manual page 32

Throttle valve
The throttle valve actuator uses the throttle valve to
influence the air volume fed to the engine and the
mixing ratio of charge air and recirculated exhaust gas
mixed in downstream of the throttle valve.
When the engine is switched off, the throttle valve is
closed. This keeps engine vibrations at a low level
when the engine is switched off.
Throttle valve
1 Throttle valve
– This printout will not be recorded by the update service. Status: 09 / 2008 –
2 Throttle valve actuator
Introduction of New Generation of 4-Cylinder Inline Engines, OM 651
Air supply
3 Charge air manifold
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