Air Bypass Valve Actuator: Description and Operation

Position
At top part of air cleaner

Task
Operating recirculated air flap steplessly between 0 - 90° for boost pressure control


Design/function
The recirculating air flap actuator is operated by means of a PWM signal supplied by the engine control module.
- On/Off ratio 100 % : recirculating air flap closed
- On/Off ratio 11 - 99 % : boost pressure control in part load range
- On/Off ratio 10 % : recirculating air flap open