Blow-off valve: Notes
WARNING: This page is about a different variant/trim than selected.
The blow-off valve is attached directly to the exhaust turbocharger.
In order to avoid the occurrence of strong vibrations at the impeller in the case of suddenly closing of the throttle valve (e.g. during gear shift), the blow-off valve opens. This creates a circuit around the compressor. The charging pressure is diverted to the intake side of the compressor.