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Hyundai CVVD engine brings another dimension to valve timing

A new technology from Hyundai Motor Group places another marker on the march to more efficient internal combustion engines. Called Continuously Variable Valve Duration, the innovation permits two options for how long the intake valves remain open during the combustion cycle. The feature adds a third take on valve chicanery, atop variable valve timing that changes when valves open, and variable valve lift that changes how far valves open. Hyundai says the feature returns a 4% improvement in performance, a 5% increase in fuel economy, and lowers emissions by 12%. Hyundai applied for two patents on the valvetrain process in South Korea in 2011 and again in 2015. The altered valve duration in this latest iteration is made possible by two movable arms inside the camshaft. Each arm is anchored at its base to a pin at the center of the camshaft, while the end of each arm extends toward the edge of the camshaft. Changing the position of the pin in the center of the camshaft changes the angle of the arms relative to one another, which moves the camshaft along its mounting rod. Voila, a new intake cam profile that either lengthens or shortens valve overlap.   During low-speed spells at low load, CVVD opens the intake valve from the middle to the end of compression stroke. The weaker detonation isn't a factor at low load, and the reduced friction during compression improves fuel economy. During heavy engine loads, the intake valve closes at the beginning of the compression stroke to maximize the amount of air mixed for detonation, boosting torque. Four additional features enhance the benefits of CVVD. A more powerful direct injection system increases fuel spray pressure from 250 bar to 350 bar. Hyundai doesn't go into details on its Integrated Thermal Management System, but says the ITMS "quickly heats or cools the engine to the optimal temperature." Low-friction components lower overall engine friction by 34 percent. And a low-pressure exhaust gas recirculation layout diverts low-pressure exhaust gas from the traditional EGR route to the turbocharger compressor under high load for better fuel efficiency.   The first engine to boast the new tech is the Smartstream G1.6 T-GDi four-cylinder, which produces 180 horsepower and 195 pound-feet of torque. It will appear in the 2020 Hyundai Sonata Turbo going on sale in South Korea later this year.

Kia Cadenza preparing new look for 2016

It may have only been on the North American market for a few short years, but the Kia Cadenza is a fairly old warhorse, having hit global markets back in 2010. Considering that, it seems aptly timed for Kia to be testing a redesign of its second largest sedan. Our spies expect the new Cadenza to arrive in 2016 pioneering a new design language for the South Korean brand, which will also be featured on the new Optima. Based on the Kia Sportspace that's making its auto show debut at tomorrow's 2015 Geneva Motor Show, we should expect something more aggressive than the relatively benign sheetmetal of the current Cadenza. That said, it's difficult to pick out the Sportspace-inspired details in the attached spy photos. Kia's designers look to have retained the basic greenhouse shape of the current car, although the styling from the firewall forward and from the C-pillar back is too heavily camouflaged to really pick out anything more than the new headlights, quad foglights, the un-Sportspace-like grille and taillights. Check out our gallery of spy photos, and let us know what you think. Related Video:

Supermodel Adriana Lima kicks off World Cup fever with Kia

Americans, it has been said time and time again, will never embrace soccer. Not when we have so many other sports (like baseball, basketball, hockey and American football) to watch, cheer on and follow. But if anyone can change minds, surely it's Adriana Lima. The Latin American supermodel - best known for being a Victoria's Secret Angel - is the lust-worthy centerpiece of Kia's campaign for the FIFA World Cup, taking place this year in her native Brazil.
Kia is sponsoring this year's international soccer championship, and is kicking off its campaign with two ads in which Lima does her best to convert Americans into futbol fans and players. Which seem like a losing battle to begin with, but the least believable part of it very well might be that an international supermodel like Adriana would be driving around in an Optima or Sorento and not in a Mercedes or Maserati convertible. Of course that doesn't mean we mind watching her try, and so can you in the pair of clips below.