Fig. 2.58. VAD system actuator: 1 – the damper is open; 2 – the damper is closed; 3 – actuator of the VAD system damper; 4 – rod; 5 – VAD system valve; 6 – intake manifold vacuum
Opens and closes the flaps. Typically, a rod under the action of a spring opens the flaps. When vacuum from the intake manifold is applied to the diaphragm compartment, the rod is retracted, closing the flaps. The flaps actuator consists of a rod, a diaphragm compartment, and a spring (Fig. 2.58).