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SPECIAL SERVICE TOOLS
4. ENGINE COOLING
SYSTEM
1) SPECIAL TOOLS AND EQUIPMENT
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ENGINE GENERAL
5) Cooling System
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ENGINE EXHAUST SYSTEM
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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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1. COMPARISON IN COOLING SYSTEM FOR EACH ENGINE
For the D27DTP (POWER UP) 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. For the
D27DT engine, the cooling system uses the fan clutch.
▶Cooling System for D27DTP (POWER UP) Engine
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ENGINE COOLING SYSTEM
D27DT Engine
D27DTP (POWER UP) & D27DT (EU IV) Engine
▶Comparison
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AIR CONDITIONING SYSTEM
3. FFF GENERAL INFORMATION
The system is to increase the coolant temperature quickly by firing diesel fuel in the burner that
is installed in engine cooling system when in winter time the ambient temperature and engine
coolant temperature is low. (Option)
FFH System consists of independent fuel lines, fuel pump, coolant circuit, coolant ciculation
pump, electrical glow plug and exhaust system by driver’s intention because FFH system
is automatically.
Operated according to the coolant temperature and the ambient temperature.
FFH system operates up to more than 2 minutes to burn the residual fuel inside the system
when driver stop the engine during its operation. Therefore, a certain period of FFH operation
after stopping the engine is not a malfunction.
