46
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
ACF System with
Double Non-Return
Valve
Throttle Valve
Actuator
Intake Air
Temperature
Sensor
High-Pressure/
Low-Pressure
Fuel Port
Plastic Flap
with Steel Shaft
High-Pressure Rail
Activated Charcoal
Filter Valve
Pressure
Limiting
Valve
Tumble
Flap
Actuator
332_058
Summary of Contents for 2004 Jetta
Page 1: ...Self Study Program Course Number 891403 The new Jetta New Model Introduction...
Page 4: ......
Page 83: ...79 Notes...
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