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Quiz: How does a variable valve timing (VVT) system improve engine

September 15, 2025 by Alex Turner

How does a variable valve timing (VVT) system improve engine performance?

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A) By adjusting the timing of valve openings and closings for optimal power and efficiency.

B) By increasing the size of the engine cylinders to enhance displacement.

C) By using a turbocharger to force more air into the engine.

D) By cooling the engine oil to reduce friction and wear.

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