Camcon Automotive, a company in England, has developed a system called Intelligent Valve Actuation, or IVA. This technology may replace conventional internal combustion engine valvetrains as we know ...

Nissan Motor has introduced a new engine technology claimed to delivers a balance of responsiveness and power, fuel efficiency and low emissions. The new system combines the technologies behind the ...

Internal-combustion engines are now all about the trade-off between power and efficiency. Until now, the tools to address that trade-off have been variable valve timing and variable valve lift, which ...

Schaeffler Group has launched its variable hydraulic valve control, which will debut on a Fiat MultiAir engine for the Alfa Romeo MiTo range. The device, known as the UniAir system and developed with ...

Variable Valve Timing and Lift Electronic Control (VTEC) has become Honda’s best-known technologies since Compound Vortex Controlled Combustion (CVCC) was in the 1970s. Coincidentally, while CVCC was ...

To celebrate HOT ROD's 75th anniversary, we teamed up with CASTROL GTX to bring you some of the stories that exemplify the core of what HOT ROD is and reflect the brand's influence on America's car ...

In order to set a stage for what follows, let's first revisit some of the fundamentals involved in how valve timing relates to power output. And to further clarify how "power" is defined in the ...

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 ...