Actuator-Intake Port Swirl: Operation

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Intake System And Swirl Valve Ports

Courtesy of DAIMLERCHRYSLER CORP.

1 - EGR COOLER

2 - SWIRL PORT VALVES

3 - CHARGE AIR PASSAGE

4 - SWIRL PORT ACTUATING LEVER

5 - SWIRL PORT ACTUATOR

There are two channels in each intake manifold for each cylinder. A charge air intake passage (3) and a swirl intake passage (2). The swirl passage (2) incorporates a blade (2) that is continually adjusted through linkage (4) and an actuator (5) when ever the engine is running. The actuator (5) is controlled by the ECM through a PWM signal. As engine speed and load increase the swirl channels adjust for optimized air turbulence and air mass requirements. When the engine is not running, the swirl channel blades (2) are held open by and integrated spring. See Fig 1.