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Variable valve timing (VVT) is the process of altering the timing of a valve lift event in an internal combustion engine, and is often used to improve performance, fuel economy or emissions. It is increasingly being used in combination with variable valve lift systems.
To get an idea of how quickly today's engines move, look no further than the variable valve system. Read more at Car and Driver.
Nowadays, the ‘VVL’ system is being increasingly used in combination with ‘Variable Valve Timing’ (VVT) systems to improve the performance. Additionally, this design also alters the lift (or travel) of the inlet valves along with valve timing depending upon the engine’s speed.
Few innovations under the hood have become as ubiquitous as variable valve timing. Automakers brag about it all the time, but seldom explain it.
In this tech article HOT ROD provides a guide to variable valve timing (VVT) technology which can be found in most late-model performance engines and we explain how hot rodders can get the...
If a fault is detected the system usually defaults to base timing and a diagnostic trouble code is set. VVT is a system designed to adjust the timing of an engines valves to optimize performance and lower emissions throughout the engines entire operating range.
Variable Valve Timing is a crucial technology in modern automotive engines, balancing the demands for power, efficiency, and emissions control. Understanding how VVT works can provide valuable insights into how your vehicle performs under different conditions.