VANOS is the BMW Variable Valve Timing (VVT) system. VANOS stands for Variable Nockenwellen Steuerung, which is the German abbreviation for variable camshaft timing. As it suggests, this technology helps change and regulate an engine’s timing, so it can operate differently and more attuned to your needs, at both low and high RPMs. This means that your engine isn’t fixed into one mode of work, but can adjust to the demands of the driver. Here at Edmonton BMW, we’ve taken some time to give you a little background on the BMW VANOS and how it works!
History of the BMW VANOS
BMW VANOS first found its home in a BMW vehicle in 1992. The lucky engine was the M50, which was utilized in the 3 and 5 Series models. The first VANOS was a single system, only concerned with the intake valve. Later, in 1996, a double VANOS system was introduced, which controls both the variability of the exhaust and intake valves. VVT systems are a mainstay in the current automotive market, so it may not seem like a big deal to single out the BMW system. VANOS, though, was one of the first of its kind to introduce this level of variable valve timing, a trend that companies followed in the years to come!
How the BMW VANOS Works
The VANOS VVT system works by changing the position between the cam and the cam gear. It links between these two independent parts and connects them through its system. Once the RPMs move off the idle, the cup goes deeper into the gear and pushes forward the valve timing. Depending on the power, the cup will close and open for how much is needed for the desired strength. These are fine-detail parts that undergo a lot of stress to get the engine working at a high level.