Fuel Injection System - Doosan DV11 Operation And Maintenance Manual

3.4. Fuel injection System

3.4.1. Common rail fuel-injection system
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Pressure generation and fuel injection are completely decoupled from each other
in the common rail injection system. The electric control unit(ECU) determine the
fuel quantity, injection timing, and injection pressure in order to show the optimum
performance on the condition for operation of the engine, then inject the fuel in
the cylinder.
The fuel is stored under pressure in the common rail ready for injection. The
injected fuel quantity is defined by the driver, and the start of injection and
injection pressure are calculated by the ECU on the basis of the stored map. The
ECU then triggers the solenoid valves that the injector at each engine cylinder
injects accordingly.
Fuel filter
Pre fuel filter
Fuel tank
manuals search engine
Common rail
ECU
Operation and Maintenance
Fuel high
pressure pump
(CP 3.4 fuel pump)
Injector
Cylinder head
Fuel high pressure
connector
Common Rail Fuel-injection System
Printed in Mar. 2005 PS-MMA0608-E1A
DV11