29
SSP 198/06
Vacuum in intake manifold:
Non-return valve 1 open. Fuel vapours return
to intake manifold.
charge pressure in intake manifold:
Non-return valve 2 open. Fuel vapours return
upstream of exhaust gas turbocharger.
ACF system
Integrated in the lines of the ACF systems are
the solenoid valve for activated charcoal
canister N80 and two non-return valves.
The engine control unit, assisted by solenoid
valve N80, regulates the return rate of the fuel
vapours from the ACF canister.
The Motronic operates the solenoid valve
cyclically using a pulse duty cycle.
The non-return valves control the return of fuel
vapours, depending on operating state.
ACF canister
Solenoid valve for activa-
ted charcoal canister N80
Non-return valve 2
Non-return valve 1
Vacuum in intake manifold
Charge pressure in intake manifold
For the exact line routing, please refer
to the Workshop Manual.
Summary of Contents for 2.7-litre V6 Biturbo
Page 47: ...48 Notes ...
Page 71: ...72 Notes ...
