184002261 - E5050 DIESEL ENGINE ELECTRONIC MANAGEMENT - DESCRIPTION
Description
An electronic control system supervises and governs all engine parameters to optimise performance and fuel consumption by means of a real-time response to different service conditions.The Diesel engine is equipped with the latest version Common Rail Unijet type injection system which has new solutions for further improving general behaviour.This features the use of an electronically controlled high injection pressure. The supply of fuel, known as the pilot injection, is optimized by the electronic control unit by means of the injector rather than managed by the pump.The common rail injection system on this version uses Multijet technology: in other words it carries out more than two injections during each engine cycle: it carries out two pre-injections (before the piston is at TDC), one main injection and two post-injections.This solution improves consumption, emissions, quietness and performance because it allows better control of the temperature in the combustion chamber, lowering the maximum value and extending the optimum combustion zone.The combustion chamber has been improved to increase thermodynamic efficiency reducing the compression ratio to 18:1. The supercharging is carried out by a fixed geometry MIX-FLOW turbocharger equipped with a Waste Gate valve.The adoption of catalyzer with a high content of noble metals and a Lambda sensor makes it possible to conform to the new EURO 3 or EURO 4 emission limits.Depending on the signals received from numerous sensors, the control unit controls the injectors connected to it managing the following systems:
- fuel supply;
- air supply;
- heater plugs;
- accelerator pedal;
- engine cooling;
- fuel pre-heating;
- combustion - Lambda sensor check.
The aim of the system is to:
- monitor system efficiency;
- indicate an increase in emissions due to vehicle malfunction;
- indicate the need to replace damaged components