VARIABLE SWIRL SYSTEM OPERATION[L3 Turbo]

Engine speed within approx. 3,250 rpm and engine coolant temperature within approx. 60°C {140°F} (variable swirl shutter valve is closed)

• Intake manifold vacuum is applied to the variable swirl shutter valve actuator by the operation of the variable swirl solenoid valve, closing the variable swirl shutter valve. At this time, the intake passage is narrower than normal, increasing intake airflow speed and also creating a powerful air swirl in the combustion chamber.

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1

Variable swirl shutter valve open

2

Intake air port

3

Variable swirl shutter valve close

1	Variable swirl shutter valve open
2	Intake air port
3	Variable swirl shutter valve close