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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 Sonata sales drop so Santa Fe production will increase

Hyundai will begin production of the five-seat Santa Fe Sport at its Alabama factory this summer to take advantage of the growing popularity of crossovers in comparison to midsize sedans. The company won't release official production targets for the CUV at the plant, but an anonymous company insider told Reuters Hyundai would build around 30,000 of them at the site this year. The Kia factory in Georgia will continue to handle the majority of Santa Fe Sport production, but the Alabama assembly will help Hyundai keep up with demand. The three-row Santa Fe will still come from South Korea. The Alabama factory has a 400,000-unit annual capacity and already produces the Elantra and Sonata. Sonata sales slipped in 2015 to 213,303 deliveries from 216,936 in 2014. Meanwhile, the volume of both body styles of Santa Fe jumped to 118,134 examples in 2015 from 107,906 the previous year. According to Reuters, Hyundai could have sold more of the CUVs last year, but a limited production capacity restricted the sales. Rumors from 2015 suggested that Hyundai might have had an eye on the plant for additional crossover production in case of falling sales for the sedans built there. The Alabama factory last built the Santa Fe in August 2010. "We're thrilled to bring back another pillar of the Hyundai lineup to our production mix here at HMMA," Chris Susock, vice president of production at the plant, said in the announcement. SANTA FE SPORT PRODUCTION WILL BEGIN AT HYUNDAI MOTOR MANUFACTURING ALABAMA IN SUMMER 2016 ID: 44810 • Additional production will support growing demand in the sport utility segment • Alabama plant is the home of the Sonata and Elantra sedans • Plant is capable of assembling 400,000 units per year MONTGOMERY, Ala., January 7, 2016 –Hyundai Motor Company has announced the addition of the Santa Fe Sport to the production schedule at Hyundai Motor Manufacturing Alabama (HMMA) starting in the summer of 2016. This change will supplement existing U.S. production of the sport utility vehicle to meet the growing demand in this popular vehicle segment. "We're very happy Hyundai has been able to make this change, which will result in more great Santa Fe crossovers available to our dealers and customers," said Dave Zuchowski, president and 'CEO of Hyundai Motor America. "The new production will help us meet the growing demand for one of our most popular products," said Zuchowski.

Kia recalls 507,000 vehicles in U.S. for airbag issues

WASHINGTON — Kia Motors Corp said on Friday it was recalling more than 507,000 vehicles in the United States because an electronic glitch may prevent airbags from deploying in a crash. The recall follows an announcement in March by the National Highway Traffic Safety Administration (NHTSA) that it was investigating why some airbags had failed to deploy in Kia vehicles and its affiliate Hyundai after crashes in which four people were killed and another six were injured. The two Korean automakers have now recalled nearly 1.1 million U.S. vehicles to address the issue. NHTSA said in March that it was aware of six serious crashes in which airbags failed to deploy in frontal crashes, including four in 2011 model Hyundai Sonatas and two in 2012 and 2013 Kia Forte vehicles. The crash of the 2013 Forte occurred in Canada. Kia's recall issued on Friday covers 2010-2013 Kia Fortes, 2011-2013 Kia Optimas and 2011-2012 Kia Optima Hybrid and Sedona vehicles. The company said the airbag control unit may short circuit because they may be susceptible to electrical overstress, preventing the frontal airbags and seat belt pretensioners, which pull the driver and front seat passenger firmly back into their seats, from deploying. The company said it does not yet have a fix, but is working with its supplier on the issue. Kia spokesman James Bell said the company "is attempting to have a remedy by the scheduled owner notification date of July 27. If Kia does not have a remedy by that date or if any customer feels unsafe in his/her vehicle, we will provide a rental car until the repair has been completed." Hyundai in February issued a recall for 154,000 U.S. Sonatas after non-deployment reports were linked to electrical overstress in the air bag control unit. In April, Hyundai recalled an additional 425,000 U.S. vehicles to address the same issue. Hyundai said in March that it was aware of reports of two deaths in its vehicles, which occurred in head-on collisions at extremely high rates of speed. NHTSA said the airbag control module under investigation was built by ZF Friedrichshafen AG, a German auto supplier. ZF said on Friday that it has worked with Kia and "continues to cooperate and support NHTSA and its customers in the investigation." The safety agency also said that electrical overstress appeared to be the root cause in a 2016 recall by Fiat Chrysler Automobiles NV of 1.4 million U.S. vehicles for airbag non-deployments in significant frontal crashes.