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Home >> Land Rover >> 2017 >> Discovery Sport SE >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Electronic Engine Controls - INGENIUM I4 2.0L Petrol -- Discovery Sport/L550) >> Electronic Engine Controls - INGENIUM I4 2.0L Petrol >> Description And Operation >> Description >> Compressor RECIRCULATION Valve

Compressor RECIRCULATION Valve

WARNING: This page is about a different car, the 2018 Land Rover Discovery Sport. However, it is still accessible from the selected car via links, so may be relevant.
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The Compressor Recirculation Valve (CRV) is located in the charge air duct and secured with three screws. The charge air duct is located between the outlet air side of the turbocharger and the inlet side of the charge air cooler.

During a quick throttle closing event the CRV prevents that the charge air flow would turn around and flows through the compressor. This would cause compressor surge. The CRV allows to recirculate the pressurized air in the charge air hose to the compressor intake. This prevents the compressor surge during the quick throttle closing events.

The CRV is controlled by Pulse Width Modulation (PWM) signal from the Powertrain Control Module (PCM).

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