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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.

Rockstar Performance creates off-road Hyundai Tucson for SEMA

Hyundai is rapidly filling its space for this year's SEMA Show on November 3 in Las Vegas, NV, but the latest addition to the growing list of debuts takes a slightly different approach. Rather than going for all-out power like the rest, Rockstar Performance Garage is bringing a tuned 2016 Tucson that's custom modified to head off-road. To handle getting through mud and over rocks, Rockstar Performance gives the Tucson a major suspension upgrade. Some 2.5-inch, adjustable coilovers are fitted at the front, and the rear is equipped with 2.5-inch shocks with remote reservoirs and progressive springs. To get the power to the dirt, 32-inch Mickey Thompson tires are mounted on some 17-inch wheels. "The focus behind this build was to create an off-roader that nobody expected," says Nic Ashby, owner and general partner of Rockstar Performance Garage. The tuners give the Tucson a meaner look thanks to a black paint job that's trimmed with yellow and silver accents, and the roof features a custom rack with an LED light bar. Inside, the stereo gets an upgrade with improved speakers and a 10-inch subwoofer. The powerplant isn't left alone, either, and Rockstar Performance fits new parts for the turbo piping and intercooler, plus a Magnaflow exhaust, to get the most from the 1.6-liter engine. Rockstar Performance's work should be quite a contrast next to the lowered, blue, 700-horsepower Tucson from Bisimoto Engineering also coming to SEMA. Related Video: ROCKSTAR PERFORMANCE GARAGE TURNS 2016 TUCSON INTO A TRUE OFF-ROADER FOUNTAIN VALLEY, Calif., Oct. 12, 2015 – Rockstar Performance Garage (RPG), the off-road specialists, have revealed details on its 2016 Tucson SEMA build. This is the first year that Hyundai has teamed up with the off-road gurus at RPG, injecting off-road lifeblood into Hyundai's popular CUV. The car will be revealed at Hyundai's SEMA press conference on November 3 at 11:30 a.m. PT, in Las Vegas. The bumper-to-bumper overhaul started with the most important piece of any serious off-roader: the suspension. The Tucson now sits six inches over stock height, riding on massive, 32-in. MTZ P3 tires from Mickey Thompson, and a fully-custom, adjustable shocks and struts system from King Shocks. The vehicle's wheel wells were reconstructed to create space for the new setup, now able to fit the massive suspension and tire combination.

Hyundai Genesis Coupe spotted with rumors of a V8 underhood

Our spy shooters have captured a Hyundai Genesis Coupe mule testing in Sweden. This is merely the current body cut-and-pasted to fit new internals, so don't be disappointed by its looks; we're looking forward to inspiration from the HCD-9 and perhaps grand touring inclinations on the production car whenever it appears. The photographers said they noticed the hood's been modified, perhaps to clear the 5.0-liter V8 from the Genesis sedan. That engine would be part of the plan to push further upscale said to be planned for the Genesis Coupe, along with the fender arch cutouts on this mule that push the wheels to the corners for a longer wheelbase that will make more room for passengers. Rumor has been that the next car will do a much better job of swallowing four adults. The company's HTRAC all-wheel drive is expected to be an option, Hyundai having said five years ago that the feature is being engineered into the Genesis family platform. A reveal probably won't come until sometime in 2016.