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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.

Kia Proceed wagon teased, could be sign of things to come for other Kias

One of our favorite cars from the Frankfurt Motor Show last year was the Kia Proceed concept (shown below). It was a rakish, sleek wagon that looked a bit like a smaller, more practically-minded Kia Stinger GT. One of the key questions, though, was whether a production version could look as good, as well as when that production version would arrive. To partially answer those questions, Kia has released a teaser image of the final product. The teaser shows us the rear of the car, and it does hint that this wagon will have a low roofline and an almost fastback rear hatch. This is evident by the small glass opening relative to the rest of the car. There are of course compromises for production. It doesn't look like the rearward side glass wraps around to the hatch glass, and the spoiler is reshaped. The taillights aren't just a single wide bar, either. Now they take a shape closer to that of the Kia Sportage or Stinger. We do like the looks of the wide haunches at the base of the glass, though. Between that and the low roof, this should be a very stylish hatch. The subtle high-mount brake light is a slick touch, too. Kia also announced that the car will be revealed in September and also be shown at the Paris Motor Show in October. We're excited to see the final product. We're less excited about the fact we probably won't get the car in the U.S. The Ceed line of cars has historically been European, and since wagons still aren't popular here, there's not much hope for this to have an American rendition. Stranger things have happened, of course. Hyundai has continued to sell the American Elantra sedan alongside the European i30 under the Elantra GT name. Kia could possibly do something similar. At the very least, there's a good chance that the Proceed's design will influence other Kia models, possibly even some of its crossovers, so that's a plus. View 5 Photos Related Video:

Center for Auto Safety wants Hyundai and Kia to recall 2.9M vehicles

DETROIT — A nonprofit auto safety group is demanding that Hyundai and Kia recall 2.9 million cars and SUVs in the U.S. due to consumer complaints that they can catch fire. The Center For Auto Safety said Friday that there have been more than 220 complaints to the U.S. government since 2010 about fires and another 200 complaints about melted wires as well as smoke and burning odors. The complaints involve the 2011 through 2014 Kia Sorento and Optima and the Hyundai Sonata and Santa Fe. Also included is the 2010 through 2015 Kia Soul. The fires are being investigated by the National Highway Traffic Safety Administration as part of a 2017 probe into Hyundai and Kia engine failures. "The volume of fires here make it appear that Hyundai and Kia are content to sit back and allow consumers and insurers to bear the brunt of poorly designed, manufactured and repaired vehicles," Jason Levine, the center's executive director, said. The fire reports have come in from across the country, including a death in Ohio in April 2017, he said. Hyundai says it monitors safety concerns and acts quickly to recall defective vehicles. "We have a robust system in place for monitoring and investigating reported vehicle fires that includes investigation and reporting to NHTSA as required. Vehicle fires can result from a variety of reasons," the company statement said. Kia said it is using company and third-party fire investigators to determine what caused the fires so it can address them. "A vehicle fire may be the result of any number of complex factors, such as a manufacturing issue, inadequate maintenance, the installation of aftermarket parts, an improper repair, arson, or some other non-vehicle source, and must be carefully evaluated by a qualified and trained investigator or technician," the company said in a statement. The Center for Auto Safety filed a petition asking NHTSA to investigate the fires in June. The agency said Friday that it is still evaluating the petition and it has sent information requests to Hyundai, Kia and other automakers about the issue. Levine says the center does not know what's causing the fires. In May 2017 the government began investigating whether the automakers moved quickly enough to recall over 1.6 million vehicles because of engines stalling. NHTSA is looking into three recalls by the related Korean brands, and it's also investigating whether the automakers followed safety reporting requirements.