For an engine to work, a fresh mixture of air and gas has to be able to enter and exit the cylinders. These induction and exhaust processes also need to occur at the correct moments, otherwise the ...

From Street Stock to Winston Cup, the three most important areas for engine performance improvements are cylinder heads, valvetrains, and intake manifolds. In particular, cylinder heads affect most ...

Scientists have developed an innovative, electrohydraulically actuated valve train for internal combustion engines, that enables completely free adjustment of stroke and timing, while at the same time ...

Vehicle engine designers are beset by conflicting demands. On the one hand, they must reduce costs as intense international competition is driving the need to cut product prices so that companies can ...

The valve train is the "respiratory organ" of combustion engines: it manages the aspiration of fresh air and the discharge of exhaust gases, which is referred to as "gas exchange". Today, only ...