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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.

2015 Hyundai Sonata configurator powers up

Eager to get your hands on a new Hyundai Sonata? We could hardly blame you. With more mature styling and better equipment for less than the model that preceded it, the new Sonata makes a compelling case, even in a market segment this competitive that includes such rivals as the Nissan Altima, Toyota Camry, Honda Accord, Mazda6, Ford Fusion, Chevy Malibu, Chrysler 200, Volkswagen Passat and Kia Optima.
The first units are just arriving at dealers now, but if your local showroom doesn't have one for you to check out just yet, we've got good news for you as Hyundai has just launched the car's online configurator. The system lets you choose from four trim levels, nine exterior colors, a couple of equipment packages and an assortment of accessories to make your Sonata yours.
Pictured here is the top-of-the-line Sonata Sport 2.0T that starts at $29,385 (inclusive of delivery), but the base Sonata starts under $22k. Spec yours (or any new Hyundai, for that matter) in the online configurator linked here.

201-horsepower Hyundai Ioniq Electric track car is awesome

While we've seen plenty of high-performance electric cars, such as Rimac's supercars and Tesla's powerful sedans and crossovers, we haven't seen many modified electric cars. Or at least electric cars modified for more performance in the traditional sense of the word for more speed and handling prowess. Engineers at Hyundai are finally giving us a peak at the future of tuning and hot rodding with their upgraded 2017 Hyundai Ioniq Electric that's competing in the Optima Ultimate Street Car series this year. It's visually much more striking than the average Ioniq thanks in part to a bold color scheme, but also bolt-on fender flares and Volk TE37SL wheels wrapped in fat 275-mm width tires. More important, there are major changes under the skin. The standard Ioniq Electric's 118-horsepower, 218 pound-foot motor has been swapped out for the new Kona Electric's motor, which makes 201 horsepower and 291 pound-feet of torque. Though that's less power than the Veloster N that's also been racing this year, it's more torque than the same hot hatch. Power still goes to the front wheels, but now there's a limited-slip differential up front to prevent the inside wheel roasting its tire in corners. Interestingly, the only suspension change mentioned is firmer lowering springs, so presumably it still uses the torsion-beam rear suspension layout of the regular Ioniq Electric. Beefy six-piston Wilwood brakes up front and four-piston units in the rear help the car come to a stop much more quickly. The cooling systems for the electronics and battery pack have been upgraded, too. It all sounds like a blast to drive. As to why Hyundai built this, the company is using it for research and development purposes. Perhaps this will aid in developing an electric N model. It's also looking to build on its 2017 season when Hyundai was the only brand with a car in the Ultimate Street Car series GTE electric vehicle class. The modifications will certainly be useful this season, since a competitor has been to a few events with a Tesla Model X P100D. The overall standings show that the hopped-up Hyundai is second in total points, which will likely narrow after the Hyundai heads to its third event at Autoclub Speedway this weekend. The two cars have not been at the same events this year, but both appear to qualify for the final invitational event that takes place in Las Vegas following the SEMA show.