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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 tops VW and Buick in China, survey says

You may be aware of the long-time competition in China between Volkswagen and Buick, but another brand apparently should be in that conversation too: Hyundai. In a recently published annual consumer survey, the Korean company actually took the top spot to beat out its German and American rivals in second and third, respectively. The results were part of the China Brand Power Index that interviewed 11,500 people around the nation and was paid for by the country's Ministry of Industry and Information Technology. While Hyundai proved popular with voters, its sales haven't necessarily shown that yet. According to Bloomberg, the brand had falling numbers in China for the first quarter of the year. Even Ford outsold the South Korean automaker in the same period, despite scoring lower on the survey. Meanwhile, Audi ranked as the populace's favorite luxury brand, which is hardly a surprise given the Four Rings' strong sales in China. In January alone the automaker saw a 15-percent boost in volume there. Parent company VW's strong performance was somewhat more surprising, though. State media severely criticized the German automaker in March, and customers protested last year for the allegedly poor handling of a recall.

Where is Hyundai's upscale Genesis brand going, and what is it, anyway?

"Genesis is the beginning, where everything sprung from. That's where the light is, and that's where we see ourselves." Manfred Fitzgerald. A genesis is an origin story, a new start. So when Hyundai had accomplished its original mission of achieving near parity with the top Japanese marques in the middle-class car market and decided to attempt to move upscale into the profitable luxury automotive sector a few years ago, it made some sense that this was the moniker it bestowed to its spinoff brand. "Genesis is the beginning, where everything sprung from," says Manfred Fitzgerald, the global brand chief. "That's where the light is, and that's where we see ourselves." But now that genesis has turned to germination. A pair of production sedans have been launched, the G80 and G90 luxo-barges. A smaller, 3 Series-fighting sedan, the G70, was previewed as a concept in last year's New York Auto Show. And now, last week in New York, the brand showed something in the all-important crossover category, the GV80. Powered by a hydrogen fuel cell, it's a look ahead at what Genesis' SUV line could be like, though the fuel-cell element faces hurdles. View 2 Photos "We have great resources with our brand partners in fuel-cell technology, so when it came to alternative propulsion, this was a natural," says Fitzgerald. "Not just for the US market, but looking at this globally, this is the best technology, but there are a lot of pain points to overcome, especially in terms of infrastructure." Genesis has promised us a handful more cars by 2020, including a coupe and another crossover. Expansion into additional vehicle realms ought to help flesh things out a bit. Though the brand can't really flesh things out any less. Only Maserati, Alfa Romeo, Smart, and Bentley sold fewer cars so far this year, and two of those brands are a century old and Italian, one is a century old and extremely exclusive, and the other is irrelevant in the United States. Given that company, where does that place Genesis? After a recent test drive in a G90, we have to say that we're not sure. The styling is acceptable, if a bit derivative and anodyne. The level of delight is quite lackluster. And the ride is cushy, quiet, and competent, but no better than a contemporary Buick. In a category in which excellence and exquisiteness are the point of entry, what does Genesis represent, what is its category-killing feature or component or capability? "We are known for being audacious.