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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 Santa Fe facelift and interior redo spied

Hyundai just rolled out the third-generation Santa Fe in 2012, so it'll be a little while yet before the crossover warrants replacement altogether. It does, however, appear to be preparing a facelifted version for introduction in the near future. Spied undergoing testing in Europe, the updated Santa Fe looks poised to get a new grille, restyled LED foglamps, new bumpers front and rear, new taillights graphics and new exhaust tips. The cockpit looks like it's getting the once-over as well, with a new infotainment system in the dashboard. Beyond that we couldn't really tell you at this point, but we can expect the revised Korean crossover to arrive sometime later this year. Previous generations of the Santa Fe lasted for about six years on the market, however, so we wouldn't anticipate a complete replacement until 2018 or so. Related Video:

2015 Hyundai Genesis

Hyundai grabbed our attention with its first-generation Genesis. Now, with this second-gen model, the company's job is to keep it. The 2015 Genesis, known internally as "DH," wisely follows in the footsteps of its predecessor, a model that showed the automaker's naked ambition, putting it on the map of not just bargain hunters, but the upwardly mobile, too.
The outgoing Genesis proved Hyundai was capable of producing a premium car of superior quality, complete with a plush interior, handsome looks and a relatively sporty driving demeanor, all for the sort of cut-rate price the brand built its reputation on. The first Genesis worked wonders for expanding Hyundai's allure, opening it up to all kinds of new car shoppers who previously wouldn't have given its other models a second glance.