Check out this article on variable valve timing systems from Honda's VTEC to Toyota's VVT-i and Nissan's CVTC, from Super Street Magazine.

Also known as NVCS (Nissan Valve Timing Control System) in some circles, here, duly equipped cams can be advanced or retarded relative to their gears.

A camlobe-phasing system which takes advantage of the merits of variable-valve timing has been developed. Some advantages of this advanced valve-timing approach are: 1. continuous control over ...

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 ...

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 ...

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

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.

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.

Although many take time for granted, timing is a fundamental keystone of modern technology and the electronic ecosystem.