•  The intake air amount is controlled to provide better recirculation of the exhaust gas.

•  The intake air amount to the engine is reduced to increase the exhaust gas temperature easily while the DPF is carrying out combustion. Due to this, the particulate matter (PM) collected in the DPF is burned and eliminated.

•  The valve is closed to cut the intake air when the engine switch is off to reduce the shock when the engine is turned off.

•  The intake shutter valve is installed to the intake manifold.

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•  The intake shutter valve consists of the valve shaft, valve, spring, valve gear, mid gear, and DC motor.

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•  The intake shutter valve has an integrated intake shutter valve position sensor. (See INTAKE SHUTTER VALVE POSITION SENSOR [SKYACTIV-D 2.2].)

•  The DC motor operates according to the signal from the PCM. The driving force is transmitted to the motor gear, mid gear, and valve gear, which opens/closes the valve.

•  The intake shutter valve opening angle is detected by the intake shutter valve position sensor and controlled to an appropriate opening angle according to the feedback from the built-in drive circuit.

•  If the intake shutter valve has a malfunction and the DC motor control is disabled, the valve is fully opened by the return spring. Due to this, the air amount necessary to move the vehicle is assured.