A DDEC Electronic Unit Pump (EUP) is a type of fuel injection pump that is used in Detroit Diesel engines. It is a combination of a mechanical pump and an electronic control system. The mechanical pump generates the high pressure needed to inject fuel into the engine’s cylinders, and the electronic control system controls the timing and quantity of fuel injected.
The Series 2000 Electronic Unit Pump (EUP) is a type of fuel injection pump that was used in Detroit Diesel engines from 1994 to 2007. It is a combination of a mechanical pump and an electronic control system. The mechanical pump generates the high pressure needed to inject fuel into the engine’s cylinders, and the electronic control system controls the timing and quantity of fuel injected.
The Series 2000 Electronic Unit Pump (EUP) provides fuel to the fuel injector nozzle. The nozzle directs pressurized fuel directly into the combustion chamber. The EUP uses a solenoid operated valve to control injection timing and metering. The source for high pressure fuel delivery is the cam/rocker arm system. Fuel injection begins when the solenoid valve is closed. Opening the solenoid valve ends injection. The duration of valve closure determines the quantity of fuel injected. See Figure 2-3.
