Definition of overhead camshaft in US English:

overhead camshaft


  • A camshaft mounted above the cylinder block of an internal combustion engine.

    ‘the unit has double overhead camshafts’
    • ‘The overhead camshafts are hollow to reduce weight.’
    • ‘The single overhead camshaft drives a four-valves-per-cylinder system.’
    • ‘The vehicle is powered by a twin overhead-camshaft 3.0-litre diesel turbo engine.’
    • ‘The engines had twin overhead camshafts which were gear driven.’
    • ‘This innovative water pump is driven directly off one of the overhead camshafts.’
    • ‘Each cylinder features two valves, operated by followers running on an overhead camshaft controlling the charge cycle.’
    • ‘The engines cannot have overhead camshafts or more than two valves per cylinder.’
    • ‘The three petrol engines are all double overhead camshaft four-cylinder units.’
    • ‘It beats a dual overhead camshaft design in terms of torque and power for a heavy-duty truck.’
    • ‘This very famous sports car began its life with a 34-year-old six-cylinder overhead camshaft engine.’