variable valve actuation

In older engines, the intake and exhaust valves operated in a fixed program of timed openings and closings. With variable valve actuation, these actions are varied for a better balance of low-speed, medium-speed, and high-speed operation.

Dictionary of automotive terms. 2015.

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  • valve actuation — See variable valve actuation …   Dictionary of automotive terms

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  • actuation — See variable valve actuation …   Dictionary of automotive terms

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