Turbocharger: Description and Operation: Overview

Turbocharger

OVERVIEW
Air charging of the 2.0L GTDi engine is provided by a fixed nozzle Borg Warner K03 turbocharger.
The turbocharger consists of two turbo elements; a turbine and a compressor. These elements are enclosed separately in cast housings and mounted on a common shaft, which rotates in a single semi-floating bearing.
The turbocharger receives water and oil cooling to allow it to maintain the optimum operating temperature and protect the bearings from overheating.
The turbocharger has a pressure operated wastegate which is controlled by the ECM (engine control module).