SsangYong: Engine Euro 4. Manual

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

1114

D27DT POWER UP ENGINE

D27DTP/D27DT (EU4) SM - 2006.08

D27DTP/D27DT (EU4)

ENGINE

FUEL

AKE

EXHAUST

PRE-HEA

TING

LUB

COOLING

SWITCHABLE

ECU

DIAGNOSIS

Exhaust System

E-EGR

Valve and EGR

Cooler

E-EGR valve

Coolant

o water

pump)

EGR cooler

Throttle body

Coolant

(Water port)

EGR cooler

: Coolant : EGR gas

Mounting location

VGT T

urbo

Charger

Exhaust manifold

Intercooler

Air cleaner

Exhaust

gas

VGT control

actuator

DOC (Diesel

Catalytic

Converter)

DOC

Muffler

Throttle B

Intercooler

Intake manifold

Exhaust M

anifold

MEMO

.................................................................................................................................................................................................................................................................................................................................................................................................................................................................

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

1881

FUEL SUPPLY SYSTEM

D27DTP/D27DT (EU4) SM - 2006.08

D27DTP/D27DT (EU4)

1. MAJOR CHANGES IN FUEL SYSTEM OF D27DTP (POWER UP) ENGINE

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 for further details.

FUEL SYSTEM

• 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,
for the D27DTP engine, it is learned when the vehicle
is in motion and the engine is at idle speed.

Injector

C3I label

• 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.)

Common Rail

Pulsation orifice

• 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.

Fuel Rail - Chrome Color

* Fuel pipe (Common rail

→ Injector)

* Fuel high pressure pipe (HP pump

→ Common rail)

SsangYong: Engine Euro 4. Manual - part 12