INTAKE SHUTTER VALVE CONTROL [SKYACTIV-D 2.2]

id0140z7988300

Outline

• The PCM controls the intake shutter valve when the following controls are performed.

― EGR control: Due to the difficulty in generating a pressure difference between the intake and exhaust during light engine-loads, recirculated exhaust gas induction is facilitated by closing the intake shutter valve and pressurizing the intake manifold.

― DPF regeneration control: Intake air is reduced during DPF regeneration control to facilitate the increase in the exhaust gas temperature.

― During deceleration: Intake air is reduced so that the catalyst temperature is not lowered by the incoming outside air.

Block diagram

ac8wzn00000480

Operation

During EGR control

• The PCM controls the intake shutter valve to the optimum opening angle based on the engine speed, fuel injection amount, and intake air amount.

During DPF regeneration control

• The PCM controls the intake shutter valve to the optimum opening angle based on the engine speed, fuel injection amount, exhaust gas temperature, and intake air amount.