•  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.

•  For the operation, refer to CONTROL SYSTEM, VATIABLE SWIRL CONTROL. (See VARIABLE SWIRL CONTROL OPERATION [MZR 2.0 DISI].)