Turbine Bypass System
WARNING: This page is about a different variant/trim than selected.
| ITEM | DESCRIPTION |
|---|---|
| 1 | Fixed vane turbocharger |
| 2 | Clean air duct |
| 3 | External compressor bypass valve hose |
| 4 | External compressor bypass valve |
| 5 | High Pressure (HP) hose |
The external compressor bypass valve is located in the high pressure duct. The high pressure duct is located between the outlet air side of the turbocharger and the charge air cooler.
The external compressor bypass valve prevents the compressor surge during tip-out events, and controlled by a Pulse Width Modulation (PWM) signal from the Powertrain Control Module (PCM). The external compressor bypass valve allows pressurized air from after the compressor to recirculate around to the compressor intake. If this valve was not present, when the engine throttle closes the pressurized air would turn around and go back through the compressor to the intake.