Separating these two housings is an actuator that can rotate to advance or delay the cam timing via using engine oil metered by ECU-powered control valves.

G. B. Kirby Meacham, Variable Cam Timing as an Emission Control Tool, SAE Transactions, Vol. 79, Section 4: Papers 700673–700938 (1970), pp. 2127-2144 ...

Follow along as we explore what Comp Cams has planned in the future for variable valve timing in stock car racing engines - Circle Track Magazine ...

With Ducati's new Desmodromic Variable Timing (DVT) , the intake cams and exhaust cams are independently variable, allowing for optimum valve events from idle to redline.

Why Variable Valve Timing? Before exploring the virtues of the IVC system, we must first acknowledge the effect that valve events have on the internal combustion engine.

The system combines Nissan’s new Variable Valve Event and Lift (VVEL) and continuous valve timing control (C-VTC) technologies to deliver significantly enhanced performance.

Honda’s VTEC (Variable Valve Timing and Lift Electronic Control) technology is a game-changer in automotive engineering, enhancing both performance and efficiency in engines. This video provides ...

The Mitchell mechanical Variable Valve Timing (VVT) system is described. The way in which it exploits variable angular velocity to change valve timing is explained. The system was used in a programme ...

Most variable valve-timing systems use increased oil pressure to shift the timing of the camshaft, opening the valves earlier; VTEC uses an entirely different set of cams at high RPMs.

The unit produces 47kW (64PS) and with the MIVEC variable valve timing system, it is expected to return significantly better fuel economy than the concept vehicle which achieved maximum 5-Star ...

DON'T MISS: The differences between automatic and manual transmissions On the other side of the engine, the Variable Valve Timing system is used to alter the flow of air into the engine.