SSANGYONG RODIUS 2006 Service Manual

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ENGINE FUEL SYSTEM
RODIUS 2007.07
0000-00
1881-09ENGINE FUEL SYSTEM
MAJOR CHANGES IN FUEL SYSTEM OF D27DTP
(POWER UP) ENGINE 1.
There are some changes in the parts related to the fuel system due to the newly adopted
D27DTP (POWER UP) engine. The major changes are as follows. Refer to the next pages fo
r
further details.
1) Injector
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 D27DT engine, the injector MDP
(minumum current for the solenoid in the
injector to lift the nozzle) is leaned only
when the engine is running. However, fo
r
the D27DTP engine, it is learned when
the vehicle is in motion and the engine is
at idle speed. ·
·
· D27DTP & D27DT (EU IV)
D27DT

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RODIUS 2007.07
0000-00
ENGINE FUEL SYSTEM
2) Common Rail
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 o
f
injected fuel volume. (It is also installed
on the connection of the high pressure
fuel supply line of the HP pump.)
·
D27DTP & D27DT (EU IV)
D27DT

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ENGINE FUEL SYSTEM
RODIUS 2007.07
0000-00
3) Fuel Rail - Chrome Color
D27DTP & D27DT (EU IV) * Fuel pipe (Common rail → Injector)
* Fuel high pressure pipe (HP pump →
　
Common rail)
D27DT * Fuel pipe (Common rail → Injector)
* Fuel high pressure pipe (HP pump →
Common rail) The I.D and O.D of the fuel rail between
HP pump and common rail are increased
according to the increased amount of fuel
injection.
Also, the engine ECU, HFM sensor and
EGR system are changed to control the
fuel injection volume and engine more
precisely.
·

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RODIUS 2007.07
0000-00
ENGINE FUEL SYSTEM
2. COMPONENTS OF FUEL SYSTEM

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ENGINE FUEL SYSTEM
RODIUS 2007.07
0000-00
▶Fuel Flow of D27DTP (Power Up) Engine
Fuel Supply System

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ENGINE INTAKE SYSTEM
RODIUS 2007.07
0000-00
2321-01ENGINE INTAKE SYSTEM
1. INTAKE SYSTEM LAYOUT
The intake system for the D27DTP (POWER UP) engine is equipped with the throttle body that
has a flap to block the air coming to the engine when the engine is switched off. Therefore, the
structure of the intake manifold has been changed.
Also, the improved HFM sensor (from HFM5.0 to HFM6.0) has been installed to control the
intake air precisely so that the NOx in the exhaust gas can be decreased.

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ENGINE EXHAUST SYSTEM
RODIUS 2007.07
1792-01
1792-01ENGINE EXHAUST SYSTEM
1. COMPONENTS
The components of the exhaust system for the D27DTP (POWER UP) engine have been
changed as follows:
1. E-EGR valve: Controlling the EGR valve electrically and sends the valve location signal to
ECU (vacuum modulator control has been deleted)
2. EGR cooler: Decreasing EGR gas (NOx) efficiently by cooling the EGR gas and let it flow
to the intake pipe
3. VGT turbocharger: Increase in capacity and performance compared to D27DTP & D20DT
engine
The EGR system has been changed to control NOx more efficiently and the VGT turbo charge
r
has been changed to increase the engine power. For more details, refer to the next description.
The exhaust system for D27DTP (POWER UP) engine is as follows:

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CDEF(Catalytic Disel Particulate Filter)
RODIUS 2007.07
0000-00
1725-12CDPF(Catalytic Disel Particulate Filter)
1. Specifications for engine with CDPF

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RODIUS 2007.07
0000-00
CDEF(Catalytic Disel Particulate Filter)
1. OVERVIEW
As the solution for environmental regulations and PM Particla Material) of diesel engine, the low
emission vehicle is getting popular. This vehicle is equipped with an extra filter to collect the
soot and burn it again so that the amount of PM in the exhaust gas passed through the DOC
(Diesel Oxydation Catalyst) is reduced. The CDPF (Catalyst & Diesel Particulate Filter) is an
integrated filter including DOC (Diesel Oxydation Catalyst) and DPF (Diesel Particulate Filter).
▶COMPARISON OF THROTTLE BODY FUNCTIONS BASED ON EXHAUST EMISSION
REGULATION
Regulated parts are carbon monoxide (CO), nitrogen oxide (NOx), particular matter (PM) and
soot in the exhaust emission, and the particulars of the regulations are prescribed in the
following table.

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CDEF(Catalytic Disel Particulate Filter)
RODIUS 2007.07
0000-00
2. COMPONENTS
Differential Pressure
SensorCDPF Assembly and Rear Exhaust Gas Temperatiure Sensor