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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.

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Watch these Super Bowl car commercials [UPDATE]

On Sunday, February 3, the New England Patriots take on the Los Angeles Rams in Super Bowl 53 at Mercedes-Benz Stadium in Atlanta, Georgia. Some will watch because of the storyline of the old-school dynasty facing off against the new-school wunderkinds, but a large chunk of people will solely be watching for the commercials. Lucky for those who slot into the latter category, many of the manufacturers release their super bowl ads ahead of time, or have simply opted to release the commercials only online. Scroll down to see what car companies have already shown their cards. Audi Audi goes the comedic route in its clip for the Big Game. It starts with a grandpa showing his grandson a gorgeous Audi e-tron GT tucked away in a garage before he's shaken awake. Turns out he was just choking on a cashew in his cubicle at his boring job. Dodge Dodge does what it knows: create enough smoke to punch more holes in the ozone layer. Set to "The Devil Went Down to Georgia (the Super Bowl is in Atlanta, get it!?), a Challenger SRT Hellcat widebody, Charger SRT Hellcat, and Durango SRT are seen ripping through a city, leaving a trail of rubber crumbs in their wakes. Genesis Genesis has not yet released a commercial prior to the Super Bowl, but it is the official luxury vehicle of the NFL. Because of this, Genesis is hosting a fan experience for 10 days before the game. It will showcase the brand's cars, offer games, and have photos opportunities and autograph days. Hyundai Jason Bateman alert! Hyundai is one of the few companies to hook a major celebrity for its advertisement, and the casting is perfect. Bateman plays a doorman who takes people to various terrible events in life, including root canals, the middle seat, and shopping for a car. The ad centers around Hyundai's Shopper Assurance, which is Hyundai's new method for car shopping. Jeep An old 1963 Jeep Gladiator finds its strength in the crusher and transforms into a a new 2020 Gladiator, with a firm declaration that the nameplate is officially back. Kia Through Kia's commercial, a young boy wonders out loud what it'd be like if the millions spent on Super Bowl commercials were used to help others.