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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.

UPDATE: Kia K900 revealed, first in leaked shots, now in official photos

We have been posting sketches and teaser images of the upcoming Kia K900 sedan, but photos of the real thing are already available in South Korea. Some presentation slides of the car, wearing the name "K9" (that's what it's called over there), are now online on Kia's own website and in the photo gallery above. The restrained appearance conveyed in the sketches is present in the final car. There's still something German about it, with detail choices reflecting current BMW and Mercedes offerings: The front grille is certainly about as big as BMW 7-series' kidneys these days. The lights' LED accents are clearly visible in all photos. Fitting the car with real-life wheels definitely makes it lose something striking that the sketches had, but that is the case with all concept design sketches. The interior ambience depicted in the penned sketch has translated well to the photograph-like render: it will be interesting to see how the promised mood lighting modes will affect the interior. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Earlier, screenshots of the slideshow have made it online on a Korean motoring site, as well as this "Job #1" style photo taken at a manufacturing facility. They showed March 20th as a date for the online unveiling, and the K9 microsite came online today. Kia has also published this commercial of the new car on YouTube. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Kia announced that the car will be shown officially at the New York International Auto Show, but the date on the slideshow already promises something, perhaps local, for tomorrow. Related Video: Featured Gallery 2019 Kia K900 official images Spy Photos Kia Luxury Sedan kia k900

Hyundai to buy electric vehicle batteries from SK Innovation, according to report

SEOUL — Hyundai Motor and affiliate Kia Motors have decided to secure electric vehicle batteries from SK Innovation for the next four to five years, Maeil Business Newspaper said on Friday, citing industry sources. The sources said the deal was worth more than 10 trillion won ($8.6 billion). SK Innovation, Hyundai Motor and Kia declined to comment. Hyundai Motor said in October it would launch 16 EV models by 2025, aiming to boost EV sales 560,000 by then, a level that would be equivalent to more than 10% of its projected global sales this year. Reporting by Hyunjoo Jin. Related Video: