Car Tech 101: How Variable Valve Timing Works – Explained!

Variable Valve TimingVariable Valve Timing

In internal combustion engines, variable valve timing (VVT) is the process of altering the timing of a valve lift event, and is often used to improve performance, fuel economy or emissions.

Car Tech 101: How Variable Valve Timing Works – Explained!

Back in the day, a car’s intake and exhaust valves opened a specific amount at a specific point in the four stroke cycle, and for a specific amount of time. Nowadays, many engines can not only change when their valves open, but also how much they open and for how long.

Few innovations under the hood have become as ubiquitous as VVT. Automakers brag about it all the time, but seldom explain it. So Brian Cooley’s here to do just that.

Check it out!

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