Timing Components: Description and Operation

VarioCam Plus, the system used to control the intake camshafts, is also used in the new Cayenne V8 engines. Apart from continuous adjustment of the valve timing, the system also enables adjustment of the valve lift for the intake valves. When combined with direct fuel injection, this allows high power output and torque values, while reducing fuel consumption. A fully aluminum, lightweight camshaft adjuster is used in the new generation of V8 engines. This lightweight construction measure achieves a weight reduction of approx. 3.7 lbs (1.7 kg) and also reduces the rotating masses. This in turn results in improved adjustment speeds and more agile engine response.