2012 SSANGYONG NEW REXTON cooling

Water pump and pipe
6. LAYOUT OF COOLING SYSTEM
From heaterThermostat (internal)
Reservoir
(coolant inlet hose)
Radiator
Radiator
Return hose
Coolant reservoir tank
From
heater
Radiator
Reservoir
(coolant inlet hose)
EEGR cooler
EGR cooler
Coolant port
Water pump

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D20DT Engine Remarks
To enhance the EGR performance by
making the temperature of exhaust
gas into the intake manifold down, the
EGR cooler has been introduced. *EGR cooler
EGR GasCoolant
The throttle body and boost pressure
sensor have been installed on the
intake manifold. *
Intake manifold
Throttle
bodyBoost pressure sensor
Cylinder head
Coolant portTo enhance the cooling performance,
the coolant port has been introduced. *
To enhance the cooling performance,
the coolant passage has been made
in the cylinder block. *
Cylinder head gasket
Coolant passage

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1. COMPONENTS
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:
VGT turbochargerIntake manifold
Turbocharger intercooler
(intake air)
EGR gas (from EG
R
cooler)
E-EGR
valve
Exhaust manifoldE-EGR
valveCoolant
To intake
manifold
EGR cooler
EGR pipe
E-EGR valveDecreasing EGR gas (NOx) efficiently by cooling the EGR gas and let it flow to the
intake manifold. The components of the exhaust system consist of:
Throttle body
Exhaust manifold

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PWM Fan Assembly
Water Pump
Port to EGR coolerCoolant Port
EGR Cooler
PWM fan unit
Fan Flap doorFrom coolant port
To water pump
Radiator
1. LAYOUT OF COOLING SYSTEM
Coolant reservoir

1. COMPARISON IN COOLING SYSTEM FOR EACH ENGINE
For the D20DT (EURO4) engine, the cooling system is equipped with E-EGR cooler and the water pump
which its capacity is improved according to the additional coolant line in the cylinder block.

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3. CHECK AND INSPECTION
1) Cylinder
(1) Compression pressure test
Specified value
Compression ratio16.5 : 1
Test condition
Compression pressureStandard32 bar
Minimum18 bar
Differential limit between cylindersMaximum 3 bar
The compression pressure test is to check the conditions of internal components (piston, piston ring,
intake and exhaust vale, cylinder head gasket). This test provides current engine operating status.
Before cranking the engine, make sure that the test wiring, tools and persons are keeping away
from moving components of engine (e.g., belt and cooling fan).
Park the vehicle on the level ground and apply the parking brake.
Do not allow anybody to be in front of the vehicle. -
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Measurement
Disconnect the fuel rail pressure sensor connector to cut off the fuel injection.
Remove the air cleaner duct and glow plugs. -
-
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Place the diagram sheet to compression
pressure tester and install it into the plug hole. 1.

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Intake/Exhaust Camshafts
2) Camshaft
(1) Overview
Hollow type camshaft contains cam, octagon cam, HP pump gear and intake/exhaust gears.
Camshaft operates the intake/exhaust valves, vacuum pump and HP pump, and transfers the engine
oil to vacuum pump through the internal oil passage.
(2) Location
Exhaust CamshaftExhaust Camshaft
Octagon cam
(for tooling)
Thrust journal
Connected to
vacuum pump
Intake Camshaft
Closed flow type water jacket (improving cooling performance)

1) Piston
(1) Overview
Piston assembly contains piston, #1 ring, #2
ring, oil ring, piston pin and snap ring. The
expansion energy from engine is transferred to
the crankshaft through connecting rod to convert
the linear movement to rotating energy.
(2) Layout
#1 ring
Oil ring
Snap ring
#2 ringMaterial: B2+
Skirt coating:
MoS2
Piston cooling gallery for
connecting rod
Wide bawl type (CR 16.5)
Cooling jet