SsangYong Korando III (2010 year). Service manual - part 343

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3. INPUT/OUTPUT DEVICES

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Basic principle at low speed

At low speed, it utilizes the principle of venturi. For 

example, when air flows through the venturi tube, 

the flow speed is faster and the pressure is lower 

at the point "A". In this case, if the inner diameter 

of venturi is more narrowed, the flow speed is so 

much faster (refer to the equation).

※ 

Control 

range

Turbocharger driving

mechanism

Control method

Effect

Improved 

performance

At low 

speed

Narrows the flow 
passage for the 
exhaust gas by 
folding the vanes

The flow rate is 
increased as the 
exhaust gas passes 
the narrow passage 
→ Increased 
turbine & impeller 
speed, Increased 
compressive force

Improved 

low speed torque

4. OPERATING PRINCIPLES

The E-VGT is designed to get more improved engine power in all ranges by controlling the turbine as 

follows:

1) How it Works at Low Speed

Normal turbocharger cannot get the turbo effect because the amount of exhaust gas is not enough and 

the flow speed is slow in a low speed zone, but VGT allows the flow passage of exhaust to narrow, 

resulting in increasing the flow speed of exhaust gas and running the turbine quickly and powerfully. 

Therefore, as VGT can intake more air than normal turbocharger, it can give the benefit of the increased 

output even in a low speed zone.

Turbocharger lag

The turbocharger is at idle speed when there is no load or it is in the normal driving condition. During 

this period, the amount of exhaust gas passing through the turbine is not enough to turn the 

compressor wheel (impeller) fast. Therefore, the intake air is not compressed as needed.

Because of this, it takes time for turbocharger to supply the additional power after the accelerator 

pedal is depressed. This is called "turbocharger lag". 

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2) How it Works at High Speed

In a high speed zone, the amount of exhaust gas increases and it is accompanied with a great force. 

Therefore, if the inner diameter of venturi is more widened, the turbine in the turbocharger by the 

releasing force of abundant exhaust gas can deliver a more increased energy to the compressor. The 

output will increase in submission to the increase of intake air volume.

Control 

range

Turbocharger driving

mechanism

Control method

Effect

Improved 

performance

At high 
speed

Expands the flow 
passage for the 
exhaust gas by 
unfolding the vanes

The flow rate is 
increased due to the 
expanded passage→ 
Increased turbine & 
impeller speed, 
Increased 
compressive force

Improved 
maximum 
power

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1. SPECIFICATION

The engine oil filter element should be changed at the same time with the engine oil. 

Regularly check the engine oil level and add the engine oil if necessary.

Remember to check the engine oil level and shorten the cycle to replace the engine oil under 

severe driving conditions.

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Severe Driving Condition

Frequent stop-and-go traffic, extended idling, short driving distance below 6 km, driving distance 

below 16 km when the outside temperature remains below freezing

Driving in a hilly or mountainous terrain, sandy, or dusty area

High load driving such as trailer towing

Taxi, patrol service or delivery service (extended idling and excessive driving with low speed)

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Unit

Description

Specification

Oil pump

Lubrication system

Gear pump, forced circulation

Type

Internal gear

Capacity

74 L at 4,000 rpm, 3 bar

Relief pressure

6.3 bar ± 0.3 bar

Oil filter

Type

Fulle flow/Paper element

Engine oil

Specified oil

Quality class: Ssangyong genuine engine oil (Total 
Quartz INEO ECS 5W 30, SK ZIC SY 5W 30 or oil 
Approved by MB 229. 51) SAE 5W30

Capacity

Min.: 4.5 L / Max.: 6.0 L

Service interval

EU

Change every 20000 km or 12 months 
(But, shorten the service interval under 
severe condition)

General

Change every 15000 km or 12months 
(But, shorten the service interval under 
severe condition)

Oil injection nozzle

Type

Piston

Operating pressure

1.5 bar

Closing pressure

1.0 bar

Oil flow

4L/min