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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.

Hyundai cranks the Tucson to 700 hp for SEMA

The annual SEMA Show doesn't kick off in Las Vegas until Nov. 3, but Hyundai is getting an early start by teasing another collaboration with the talented tuners at Bisimoto Engineering. Following up on their high-performance takes on the Sonata, Genesis Coupe, and Elantra GT of past years, the attention turns to the Tucson. Now that the crossover packs over 700 horsepower, Bisimoto prefers to describe it as a "Brute Ute." To crank that much power out of a Tucson, the tuners perform quite a long list of modifications to Hyundai's 2.4-liter Theta-II four-cylinder. Among them, the mill gets strengthened internal parts, a new cam, high-boost turbo, and updated management system. Bisimoto then routes the grunt through a six-speed manual gearbox. The tuners match the massive power with an appropriately wild look. Up front, the normal grille is gone, and now all that's visible is a massive intercooler. The blue Tucson also hunkers low over 19-inch wheels thanks to a custom air suspension, and bigger brakes should help slow things down at high speed. The interior also gets outfitted with an upgraded stereo, and there's now a roll cage in there, too. While only being shown currently in the sketch above, we expect to get all the angles at SEMA in November. Bisimoto Engineering's First CUV is the Most-Powerful Tucson Ever FOUNTAIN VALLEY, Calif., Sept. 21 2015 –Hyundai has revealed the most-powerful 2016 Tucson ever created, built by the powertrain gurus at Bisimoto Engineering for 2015 SEMA. Partnering for a fourth straight year, Bisimoto's "Brute Ute" will be revealed at Hyundai's SEMA press conference on November 3 at 11:30 a.m. PT, in Las Vegas. Utilizing Hyundai's 2.4-liter "Theta-II" power plant as the starting point for the build, similar to last year's 2015 Sonata, Bisimoto mated strengthened internals with fast-burning flex-fuel, a high-boost turbocharger and an upgraded engine management system to put down more than 700 horsepower to the wheels through a 6-speed manual transmission. This rendition of the 2016 Tucson was built with the ultimate vision of packing world-beating performance and technology into a brand-new, unexpected vehicle platform. "The 2016 Tucson was the perfect platform for this year's build, offering me the opportunity to captivate a wider audience by tapping into the growing popularity of the CUV market," said Bisi Ezerioha, owner and chief engineer, Bisimoto Engineering.

Hyundai's all-new 2018 hydrogen-powered CUV comes into focus

It's no secret that Hyundai has plans for hydrogen-powered vehicles beyond the currently available Tucson Fuel Cell. Ever since the debut of the Intrado concept at the Geneva Motor Show in early 2014, Hyundai has been dropping hints about what the new big-ish H2 vehicle will offer. We say "big-ish" because Hyundai Motor Group's director of eco-vehicle development, Ahn Byung-ki, told Automotive News that the next-gen hydrogen powertrain will find a home in a "totally new" model that will be "somewhere between a CUV and SUV." So, whatever fancy new automotive segment that phrase happens to define – MUV, for middleweight utility vehicle? – is what Hyundai's new hydrogen offering will be. Under the hood, the upcoming vehicle will use a fuel cell that doesn't need as much platinum and will have a bigger battery and a smaller motor. We had originally heard that this new hydrogen CUV/SUV would arrive in 2020, but Ahn said that the 2018 Winter Olympics, which will be held in Pyeongchang, South Korea will be "a big event. That's always a good opportunity for PR." With the Intrado concept, Hyundai said it was, "far more than a styling exercise." We've since heard that Hyundai believes that a CUV/SUV model offers the best option for customers buying a fuel cell vehicle. Earlier this year, Hyundai's head of the company's fuel cell research, Sae-Hoon Kim, said that, "all customer feedback says range and boot space are the priorities." The Intrado concept had a supposed range of around 375 miles. What that would translate to outside of the fictional auto show universe is unknown, but it sounds like Hyundai is ready to make all of this more real. Related Video: Featured Gallery Hyundai Intrado Concept: Geneva 2014 View 16 Photos News Source: Automotive News – sub. req. Green Hyundai Green Automakers SUV Hydrogen Cars h2 hyundai intrado