Martin Grosser

Electronic Diesel Control (EDC)

Electronic control of a diesel engine allows fuel-injection parameters to be varied precisely for different conditions. This is the only means by which a modern diesel engine is able to satisfy the many demands placed upon it. The EDC (Electronic Diesel Control) system is subdivided into three areas, “Sensors and desired-value generators”, “Control unit”, and “Actuators”.

Steuerung und Regelung von Dieselmotoren

Die elektronische Steuerung des Dieselmotors erlaubt eine exakte und differenzierte Gestaltung der Einspritzgrosen. Nur so konnen die vielen Anforderungen erfullt werden, die an einen modernen Dieselmotor gestellt werden. Die „Elektronische Dieselregelung“ EDC (Electronic Diesel Control) wird in die drei Systemblocke „Sensoren und Sollwertgeber“, „Steuergerat“ und „Stellglieder (Aktoren)“ unterteilt.

Overview of common-rail systems

The demands placed on diesel-engine fuel-injection systems are continuously increasing. Higher pressures, faster switching times, and a variable rate-of-discharge curve modified to the engine operating state have made the diesel engine economical, clean, and powerful. As a result, diesel engines have even entered the realm of luxuryperformance sedans.

Electronic Control Unit (ECU)

Digital technology furnishes an extensive array of options for open and closed-loop control of automotive electronic systems. A large number of parameters can be included in the process to support optimal operation of various systems. After receiving the electric signals transmitted by the sensors, the control unit processes these data in order to generate control signals for the actuators. The control program, the “software”, is stored in a special memory and implemented by a microcontroller. The control unit and its components are referred to as “hardware”. The EDC control unit contains all of the algorithms for open and closed-loop control needed to govern the engine-management processes.