SSANGYONG Rodius 2012.07 Manual page 349

15-24
(8) Swirl control
A. Overview
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Variable swirl valve
The strong swirl caused by intake air is important element for anti-locking function in diesel engine. The
swirl control valve partially closes the intake port to generate the swirl according to the engine conditions.
When the engine load is in low or medium range, the swirl could not be generated because the air flow is
slow. To generate strong swirl, there are two passages in intake manifold, and one of them has the valve
to open and close the passage. When the valve closes the passage, the air flow through the another
passage will be faster, and the strong swirl will be generated by the internal structure of the passage. This
swirl makes the better mixture of air and fuel, eventually the combustion efficiency in combustion
chamber could be improved. This provides the enhanced fuel consumption, power and EGR ratio.
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Components
Coolant temperature
sensor
HFM
Accekerator pedal
Crankshaft position sensor
D20DTR ECU
module
Variable swirl valve