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Engines
Tumble Flaps
At different engine rpms, tumble flaps are
activated to enhance the air/fuel mixture.
The tumble flaps are actuated:
• To improve cold engine idling
• To improve charge efficiency at start-up
• In overrun mode
Intake Air
Temperature
Sensor
Throttle Valve
Actuator
46
Activated Charcoal
Filter Valve
ACF System with
Double Non-Return
Valve
High-Pressure Rail
Plastic Flap
with Steel Shaft
High-Pressure/
Low-Pressure
Fuel Port
Pressure
Limiting
Valve
332_058
Tumble
Flap
Actuator
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