What is the variable phase of Audi's 2.0T engine?

[Lucy]

Engine variable phase refers to the VVT system of the engine, which is the Variable Valve Timing system. Introduction to Engine Variable Phase: Variable phase is a device that allows the camshaft 1 to pulsate and change its timing relative to the drive sprocket 14 mounted on the short shaft 102. It includes followers 119, 110 that rotate with the respective follower shafts 103, 104 mounted on the sprocket. The followers rotate around an axis parallel to the sprocket's rotational axis. Planetary gears 106, 108 transmit rotational motion in phase from the sprocket to the camshaft via the sun gear 107. An angularly adjustable ring cam 117 has an inner contour line that meshes with the followers, periodically transmitting rotational motion to the follower shafts to alter the phase of the motion transmitted to the camshaft. Function of Engine Variable Phase: Engine variable phase is one of the new technologies gradually applied to modern cars in recent years. The use of variable valve timing technology in engines can improve intake charge, increase the charge coefficient, and further enhance the engine's torque and power.