Variable Valve Timing
Variable valve timing (VVT) is the process of altering the timing of a valve lift event, and in internal combustion engines is often used to improve performance, fuel economy or emissions.
How Variable Valve Timing In Internal Combustion Engines Works!
There are many ways in which this can be achieved, ranging from mechanical devices to electro-hydraulic and camless systems. Nobody is better qualified to explain this than Brian Cooley.
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