English to Polish Tech/Engineering Automotive / Cars & Trucks

Duration:

this is the number of degrees the valves are actually open or "off their seats" in the four stroke cycle. Although the camshaft roates at halfengine speed, the degrees of camshaft duration are always measured in degrees of crankshaft rotation. Camshaft degrees are measured at different lifter/follower lift heights so there can be slightly different duration figures quoted for the same camshaft