Variable valve timing is one of the key technologies in the further development of automotive engines. A variation of valve lift profiles and variable valve timing in the engine operation map offer ...

The supercharged 4.2-liter V8 under the XKR’s hood features twin air intakes and continuously variable valve timing—mated to what Jag claims is a “class-leading” six-speed automatic paddle-shift ...

Earlier this year, I wrote about the very first Continuously Variable Valve Duration, or CVVD, system from Hyundai. I claimed it to be the first production engine with the technology. As did Jason ...

Both of these Silverado engines feature continuously variable valve timing and Active Fuel Management (AFM), which shuts down cylinders to improve fuel economy when only small amounts of power are ...

Just as the LC2 in the ’86-87 turbo Buicks had cutting edge technology including Tuned Port Injection and distributor-less (individual coil) ignition, the LF3 boasts: Dual Overhead Camshafts (DOHC), ...