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 ...

It's springtime! Time to start working on your project car, learn a new wrenching skill, discover what everything is under the hood (and how it works), or just spruce up your daily driver. All month, ...

Cars are Andrew's jam, as is strawberry. After spending years as a regular ol' car fanatic, he started working his way through the echelons of the automotive industry, starting out as social-media ...

Set to debut in a new 1.6-liter 4-cylinder Smartstream turbo engine, Hyundai's new valve tech is able to continuously change the duration of valve openings to suit driving conditions, which Hyundai ...

Hyundai figured out continuously variable valve duration in a production vehicle (or at least one about to hit production). increase in performance of 4 percent with 5 percent better efficiency, along ...

GM has announced that all V-8 powered Chevrolet and GMC trucks now feature variable valve timing (VVT) for the 2010 model year. A quick trip back to engineering 101 reminds us that VVT is a piston ...

Ducati has made public the new Variable Valve Timing technology we wrote about only two days ago. While one of the small mysteries was whether the D from the DVT acronym stood for Ducati, Dynamic or ...

Everybody kind of knows what it is and has a picture in their mind of what a camshaft looks like, but maybe not a full understanding of what it really does or the technological advances that ...

March 30, 2007 Over the last century of automobile development, we have seen an enormous range of valve actuation technologies, ranging from pushrod, through single then double overhead camshafts, ...

CVVD optimises both engine performance and fuel efficiency while also being eco-friendly. The valve control technology regulates the duration of valve opening and closing according to driving ...