223002852 - E5030 PETROL ENGINE ELECTRONIC MANAGEMENT - DESCRIPTION

Description

An electronic management system supervises and governs all engine parameters. It optimises performance and fuel consumption by responding in real time to different service conditions.The system is managed by a single control unit which controls both the ignition and the injection.

The system uses signals received from numerous sensors to control actuators. It is connected to the following systems:

• fuel supply;
• air supply system;
• engine cooling;
• exhaust with catalytic converter;
• fuel vapour recirculation.

This version of the system also includes the EOBD (European On Board Diagnosis) system - conforming to Directive 98/69/CE (EURO 3) - permits continuous diagnosis of the components - associated with emissions, and by the warning light coming on, indicates any deterioration of these components.

Among other things, the system diagnoses:

• the catalytic converter, which in the case of a malfunction does not convert the pollutants produced by the engine;
• the Lambda sensors (oxygen sensors);
• the lack of combustion, so unburnt fuel reaches the catalyzer where the thermal conversion reactions cause a sudden increase in temperature, damaging the catalyzer.

This autodiagnostic system also produces a signal for switching on the (amber yellow) ''injection/EOBD failure'' warning light in the instrument panel.The system is also controlled by means of a relay located in the junction unit in the engine compartment. The supply lines for the engnie management control unit and the various system components (sensors and actuators) are protected by a special fuse, also located in the above mentioned box.