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EGR cooler bypass valve
Exhaust gas goes to combustion
chamber without through EGR
cooler in engine cooled, and the
valve is closed by vacuum
pressure.
2. VACUUM PUMP
Vacuum pump generates the vacuum pressure and supplies it to EGR cooler bypass solenoid. This
pump is single vane type and displacement is 210 cc/rev. The lubrication oil is supplied through the hole
in hollow shaft.
Components
Vacuum pump
Pump capacity: 210 cc/rev
Speed: 375 to 3,000 rpm
Lubrication temperature:
Oil: 5W30
Drive type: Driven by exhaust
Camshaft solt
Brake booster
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Front mounting assembly
Location: Front side of transfer axle housing and front side of
sub frame
Right mounting assembly
Location: Engine block side and body side member
Rear mounting assembly
Location: Rear side of transfer axle housing and
front side of sub frame
3. ENGINE MOUNTINGS
D20DTF engine mounting is 4-point mounting type and supports the engine and transaxle.
Front and rear mountings are rubber type and support the torque reaction. Left and right mountings
support the power train rods and torque reaction. Additionally, right mounting is hydraulic type and
supports the engine vibration.
Components
Left mounting assembly
Location: Upper side of transfer axle housing and
body side member
LocationFront mounting
Location
BRKT-Right
MTG-4WD
LocationFront mounting
BRKT-Right
MTG-2WD
Front MTG MTFront MTG AT
LocationRight MTG-4WDRight MTG-2WD
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Chain upper bush
Chain type: single bush
Chains: 112 EA
Hydraulic tensioner
Contains tensioner housing
plug, spring and check valve,
and operated by hydraulic
pressure
Exhaust Camshaft sprocket
Teeth: 42 EA
Clamping rail
Installed between exhaust
Camshaft sprocket and
crankshaft sprocket
7. CHAIN AND GEAR DRIVE SYSTEM
D20DTF engine uses single stage chain drive system. Timing chain drives the exhaust side and gear drive
the intake side. Timing chain is single bush type. Upper chain drives HP pump connected to intake
Camshaft by driving exhaust cam shift sprocke, and lower chain drives oil pump to lubricate the engine.
And, MBU (Mass Balance shaft Unit) drive gear drives MBU.
Components
Chain lower bush
Chain type: single bush
Chains: 60 EA
Mechanical type tensioner
Operated by internal spring
The timing links (gold color) on the timing chain are aligned with the timing marks on the
crankshaft sprocket and the camshaft sprocket whenever the crankshaft rotates 8 turns.
Oil pump sprocket
Teeth: 30 EA
Tensioner rail
Installed between exhaust
Camshaft sprocket and
crankshaft sprocket
Crankshaft sprocket
Teeth: 21 EA
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Oil pan assembly
8. OIL PAN
The oil pan in D20DTF engine improves the noise and vibration. Especially, the oil drainage is very easier
than before. And, A/C compressor bracket and the oil dipstick tube are mounted on the oil pan.
Components
Oil drain plug
Dust cover
A/C compressor bracket
Oil dipstick tube hole
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10. FLYWHEEL AND DRIVE PLATE
1) DMF (Dual Mass Flywheel)
The dual mass flywheel, or DMF, eliminates excessive transmission gear rattle, reduces gear
change/shift effort, and increases fuel economy. There is a friction ring located between the inner and
outer flywheel that allows the inner and outer flywheel to slip. This feature is designed to alleviate any
damage to the transmission when torque loads exceed the vehicle rating of the transmission. The friction
ring is the weak spot in the system and can wear out if excessive engine torque loads are applied
through it. The system also has a center support bearing that carries the load between the inner and
outer flywheel, and is fitted with damper springs to absorb shocks.
2) Drive Plate
Drive plate receives the power from the start motor when starting the engine. With this, the drive plate
initially drives the power train system. And, it is connected to the torque converter to transfer the engine
torque to the power train system.Components
Dual mass flywheel
Trigger ring
Drive plate
Components
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11. PISTON/CRANKSHAFT/CYLINDER BLOCK
This vehicle is FF driving type and the engine is installed in lateral direction. The crankshaft and the
cylinder block convert the compression pressure to the rotating energy.
Components
Cylinder block
Piston
Connecting rod
Crankshaft
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1. SPECIFICATION
Description Specification
Fuel Diesel
Fuel filterTypeFuel heater + priming pump + water separator
integrated type
Filter type Changeable filter element type
every 40,000 km
every 45,000 km
Water accumulating capacity 200 cc
Heater capacity 250W 13.5V
Injector System pressure 1800 bar
High pressure fuel
pumpType Eccentric cam/Plunger type
Operating type Gear driven type
Normal operating temperature
Operating pressure 1800 bar
Operating temperature
Low pressure fuel
pumpType Vane type
Gear ratio (pump/engine) 0.5 : 1
Pressure 6 bar
Fuel tankCapacity 57 L
Material Plastic
Fuel sender Dual sender type
Change intervalEU
GEN
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3. MAINTENANCE AND INSPECTION
1) Maintenance Procedures for DI Engine Fuel System
Always keep the workshop and lift clean (especially, from dust).
Always keep the tools clean (from oil or foreign materials).
Wear a clean vinyl apron to prevent the fuzz, dust and foreign materials from getting into fuel system.
Wash your hands and do not wear working gloves. 1.
2.
3.
Follow the below procedures before starting service works for fuel system.
If the problem is from HP pump, fuel supply line or injector, prepare the clean special tools and sealing
caps to perform the diagnosis for DI engine fuel system in this manual. At this point, thoroughly clean
the related area in engine compartment. 4.
Clean the engine compartment before starting service works.
Tool kit for high pressure lineTook kit for low pressure line