New electronic engine management system with a wide range of functions

The injection time, volume and pressure are regulated by a newly developed electronic control unit, which is integrated into the data bus network of the A-Class. The other tasks this unit performs in connection with the fuel injection process include idling and individual cylinder torque control, limiting the engine speed, deceleration fuel cut-off and control of the fuel pump. The micro-computer is also responsible for controlling the charge pressure of the turbocharger, exhaust gas recirculation and demand-related intake duct closure in the diesel engines. All the system components and their functions are monitored by an efficient diagnostic system.

The quick-start glow-plug system is yet another new feature. This enables the diesel engines to be started almost as quickly as their petrol counterparts.