SSANGYONG KYRON 2010.01 Manual page 153

ENGINE FUEL SYSTEM
GENERAL
1. MAJOR CHANGES IN FUEL SYSTEM OF ENGINE
There are some changes in the parts related to the fuel system due to the newly adopted
D20DT (EURO 4) engine.
The major changes are as follows. Refer to the next pages for further details.
1) Injector
2) Common Rail
- Two nozzle holes are added (currently 7)
to the tip of the injector to increase the
amount of fuel injection and to improve
injection efficiency according to the
increased engine power.
- The existing C2I coding (16 digits) is
changed to C3I coding (20 digits) to monitor
fuel injection and follow the target value.
- For the D20DT engine, the injector MDP
(minimum current for the solenoid in the
injector to lift the nozzle) is leaned only
when the engine is running.
However, for the D20DT (EURO 4) engine,
it is learned when the vehicle is in motion
and the engine is at idle speed.
- The orifice is added to the connection to
the fuel pipe of the HP pump to prevent
the fuel pulsation by the fuel supply and
fuel cut according to the increase of
injected fuel volume. (It is also installed
on the connection of the high pressure
fuel supply line of the HP pump.)
ENGINE FUEL SYSTEM
02-3
1881-09
1881-09
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