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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.

2018 Kia Stinger GT First Drive Review | Sleeper of the year

MOJAVE, Calif. — The sunbaked sign at the Hyundai/Kia Proving Grounds clearly indicates the speed limit on the banked oval: 120 miles per hour. But after a few perfunctory triple-digit parade laps, the Kia representative in the passenger seat isn't having any of it. With a wink and nudge, he discreetly permits us a few extra, unrestricted goes around the big course. Never one to turn down track time, we push the 2018 Kia Stinger down the 6.4-mile oval until I see an indicated 164 mph on the straight — the fastest we've ever driven anything built in Korea, let alone many of the contenders in the Stinger's crosshairs. Game on, Kia. The early days of Kia's attempt to conquer the American car market were dominated with an appliance-like sense of economy, one reflecting a scrappy catch-up mentality opposed to the disruptive, luxury challenging tactics du jour. Subsequent attempts to globalize the brand have taken on a definitively more inspired, international flair, and the new Stinger is the strongest harbinger of that direction to date. The movement originated when Hyundai/Kia plucked design boss Peter Schreyer from Audi, eventually moving him up in an unprecedented promotion to one of manufacturer's three group presidents. Not only did Schreyer inject a sleek, contemporary look to the lineup, his promotion proved the brand was dead serious about creating striking designs. The Stinger's styling does not disappoint. Apart from the familiar Tiger Nose grille and the letdown of non-functional (ie, ornamental) "hood vents," the five-seater's proportions and surface treatments feel sharp and fresh, purposeful and clean. Measured from bow to stern, the Stinger is roughly mid-class among its competitive set, while offering the practicality of a sportback design that enables decent rear legroom and 23.3 cubic feet of cargo capacity. But its considerable 114.4-inch wheelbase is among the lengthiest in its class, edged out only by the Audi A7, Porsche Panamera, and BMW 6 Series Grand Coupe. That said, the upper end of Kia's self-ascribed competition might be a bit of a stretch (sorry, pun intended) considering the unlikelihood of Porsche die-hards cross-shopping the $85,000 Panamera against this new kid on the block. The other side of Kia's modern story involves the snagging of performance whisperer Albert Biermann from BMW's M performance division.

Kia Sedona and Hyundai Tucson recalled for hood latches

The Basics: Hyundai and is Kia division have issued two recall notices, both for similar issues. The larger of the two affects 219,800 units of the 2006-2014 Kia Sedona minivan built between June 15, 2005, and April 04, 2014. The second relates to 81,000 examples of the 2016 Tucson crossover manufactured from May 19, 2015, to March 14, 2016. The Problem: In both cases, the secondary hood latch may not properly secure the hood in place and keep it from opening while under way. Injuries/Deaths: None reported. The fix: Dealers will replace the secondary hood latch, or in the Sedona's case, maybe just clean and lubricate the latch, as needed. Both campaigns are set to begin next month. If you own one: Make sure you don't accidentally release the primary hood latch while driving or the secondary latch may not do its job. Related Video: RECALL Subject : Secondary Hood Latch may Bind and not Latch Report Receipt Date: JUN 01, 2016 NHTSA Campaign Number: 16V389000 Component(s): LATCHES/LOCKS/LINKAGES Potential Number of Units Affected: 219,800 Manufacturer: Kia Motors America SUMMARY: Kia Motors Corporation (Kia) is recalling certain model year 2006-2014 Kia Sedona vehicles manufactured from June 15, 2005, through April 04, 2014. In the affected vehicles, the secondary hood latch may bind and remain in the unlatched position when the hood is closed. CONSEQUENCE: If the primary latch is inadvertently released and the secondary latch is not engaged, the hood could unexpectedly open while driving, increasing the risk of a vehicle crash. REMEDY: Kia will notify owners and dealers will replace the secondary hood latch or clean and lubricate the latch, depending on the vehicle's location and the condition of the latch. These repairs will be performed free of charge. The recall is expected to begin on July 25, 2016. Owners may contact Kia at 1-800-333-4542. Kia's recall number is SC134. NOTES: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov. ## RECALL Subject : Secondary Hood Latch may Disengage Report Receipt Date: MAY 24, 2016 NHTSA Campaign Number: 16V348000 Component(s): LATCHES/LOCKS/LINKAGES Potential Number of Units Affected: 81,000 Manufacturer: Hyundai Motor America SUMMARY: Hyundai Motor Company (Hyundai) is recalling certain model year 2016 Tucson vehicles manufactured May 19, 2015 to March 14, 2016.