Computers and Control Systems: Description and Operation: Overview

Electronic Engine Controls

OVERVIEW
The 2.0L Gasoline Turbocharged Direct Injection (GTDi) engine is an in-line, double overhead camshaft, 4 cylinder engine, which is transverse mounted in the engine compartment. The engine management system is controlled by an ECM (engine control module) located in the engine compartment. The ECM (engine control module) uses inputs from various sensors to control actuators to achieve optimum conditions of all aspects of engine running, emissions and performance.
The engine uses a returnless, high pressure direct injection fuel system, with 7 hole injectors to supply the cylinders. An in tank, low pressure pump delivers fuel to an engine mounted high pressure pump, driven from the exhaust camshaft. Both pumps are controlled by the ECM (engine control module).
The Borg-Warner K03 turbocharger is located on the exhaust manifold and features a pressure controlled, solenoid operated wastegate and water cooled bearing housing.
The double overhead camshafts use VCT (variable camshaft timing) which allows the timing of the intake and exhaust valves to be adjusted independently of each other. The system is operated by 2 VCT (variable camshaft timing) solenoids which are controlled by the ECM (engine control module) using information from 2 CMP (camshaft position) sensors.