VarioCam Plus is a two-in-one engine concept that adjusts the camshafts on the inlet side and controls valve lift.
The system distinguishes between normal everyday and maximum power requirements and adapts to the corresponding conditions. The switchover is performed imperceptibly look at the intake manifold in the new 911 Turbo models. With a traditional resonance manifold, more air means more power. The compression effect in the intake system is used to press as much of the fuel/air mixture as possible into the cylinders. Unfortunately, compression not only increases air volume, it also increases air temperature. And this has a negative effect on ignition. Our expansion manifold turns that principle around. The internal geometry is radically different from that of a resonance intake system. Key modifications include a longer distributor pipe, with a smaller diameter, and shorter intake pipes. As a result, the air is in the expansion phase as it enters the combustion chambers. And expansion always cools. The result is spontaneous acceleration, an extremely quiet drive and extraordinary engine power with comparatively low fuel consumption.