Variable valve timing and variable valve lift may sound similar, but they're entirely different. Here are the differences between them and how they work.

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 ...

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 Motor Group (HMG) says it has developed the world’s first ‘Continuously Variable Valve Duration’ (CVVD) technology to feature in future Hyundai and Kia vehicles. The innovation was revealed at ...

The jargon goes well beyond just names. Car specs are full of abbreviations that may or may not have any meaning at first glance. And sometimes we get so used to seeing those abbreviations that we may ...