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Wednesday 23 April 2014 • 10:20 GMT • Last update 16:46

Camless valvetrain

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A camless valvetrain has no camshaft to operate the valves. Instead, an electro-hydraulic system operates each valve. This can reduce parasitic loss and increase efficiency.

An engine which has a conventional camshaft to operate one set of valves, but a camless system for another set of valves, is known as 'half camless'.

 

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