page_title: Electronic Diesel Control
section_title: Components
hierarchical_section_title: Electronic Diesel Control / EDC system / Components
caption_attribution_description: English: EDC accelerator pedal assembly Deutsch: Pedaleinheit als Sollwertgeber einer elektronischen Motorsteuerung
context_page_description: Electronic Diesel Control is a diesel engine fuel injection control system for the precise metering and delivery of fuel into the combustion chamber of modern diesel engines used in trucks and cars.
context_section_description: Sensors
  Injection pump speed sensor - monitors pump rotational speed
  Fuel rack position sensor - monitors pump fuel rack position
  Charge air pressure sensor - measures pressure side of the turbocharger
  Fuel pressure sensor
  Air cleaner vacuum pressure sensor
  Engine position sensor
  Temperature sensors - measure various operating temperatures
  Intake temperature
  Charge air temperature
  Coolant temperature
  Fuel temperature
  Exhaust temperature (Pyrometer)
  Ambient temperature
  Vehicle speed sensor - monitors vehicle speed
  Brake pedal sensor   - operates with cruise control, exhaust brake, idle control
  Clutch pedal sensor - operates with cruise control, exhaust brake, idle control
  Accelerator pedal sensor
  Driver input switches - cruise control, idle increase /decrease, engine/exhaust brake
  Injector needle movement sensor - monitors the actual injection time and feeds the information to the ECU (as used on VM Motori 2.5 and 3.1 engines)
  Electronic Control Unit
  The ECU collects and processes signals from various on-board sensors. An ECU electronic module contains microprocessors, memory units, analog to digital converters and output interface units. Depending upon the parameters, a number of different maps can be stored in the onboard memory. This allows the ECU to be tailored to the specific engine and vehicle  requirements, depending on the application. The operating software of the ECU can be adapted for a wide variety of engines and vehicles without the necessity of hardware modification. The ECU is usually located in the  cab or in certain cases, in a suitable position in the engine bay where additional environmental conditions might require cooling of the ECU as well as a requirement for better dust, heat and vibrations insulation  .
  Actuators and Solenoids
  Electro-magnetic actuators are usually located on the fuel pump to transfer electrical signals into mechanical action in this case fuel rack actuator and or fuel stop solenoid which means that depending on requests from control unit full fuel or no fuel quantity.
  Injectors
  Boost-pressure actuator
  Intake-duct switchoff
  Throttle-valve actuator
  Exhaust gas recirculation actuator
  Auxiliary heating
  A/C compressor
  Radiator fan
  Electronic shutoff valve
  Rail-pressure control valve
  Diagnosis lamp
caption: EDC accelerator pedal assembly
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