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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.

Awaiting Chevy Trailblazer, driving Ford Ranger | Autoblog Podcast #580

In this week's Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Consumer Editor Jeremy Korzeniewski and Green Editor John Beltz Snyder. First, they discuss the news, including the Chevy Trailblazer, Ferrari to stop providing Maserati with engines, an upcoming Ferrari Hybrid, Elon Musk's sex jokes and the reveal of the McLaren GT. They also talk at length about a couple vehicles they've been driving: the Kia Niro EV and the Ford Ranger. Autoblog Podcast #580 Get The Podcast iTunes – Subscribe to the Autoblog Podcast in iTunes RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Chevy Trailblazer could be coming to the U.S. Ferrari to stop supplying engines to Maserati Ferrari to reveal a hybrid supercar Sex on Autopilot McLaren GT revealed Cars we're driving: 2019 Kia Niro EV 2019 Ford Ranger Feedback Email – Podcast@Autoblog.com Review the show on iTunes Related Video: Green Podcasts Chevrolet Ferrari Ford Kia Maserati McLaren Tesla Truck Coupe Crossover Hatchback Electric Future Vehicles Hybrid Off-Road Vehicles Performance Supercars

Kia Stinger GT Atlantica is a deep-blue limited edition

Kia continues its massive marketing push for the brand-new Stinger fastback by announcing a limited-edition "Atlantica" model for 2019. It adds European and Korean badging and other features to the standard U.S. version of the sport sedan. It's based on the Stinger GT2 AWD, which starts at $51,400 and features a 3.3-liter V6 that puts out 365 horsepower and 376 pound-feet of torque. From there, the Atlantica will get a deep chroma blue metallic paint finish, plus 19-inch alloy wheels borrowed straight from the European version. And instead of the standard Kia badge on the rear, there's a large-font Stinger logo, just like Korean buyers get. Inside is where things get more luxurious, with an exclusive espresso-brown nappa leather and a black "suede-type" headliner. There's also a surround-view monitor, wireless phone charger and heated rear outboard seats. There's a Stinger Atlantica badge on the front center console, plus two flanking both front fenders. Kia says it'll make just 500 examples of the Atlantica and will announce pricing closer to the on-sale date this summer. It's the latest example of the Korean automaker's marketing push for the new Stinger, which it bills as its most performance-focused vehicle yet. In addition to its Super Bowl ad last month starring Aerosmith frontman Steven Tyler, it's also offering "Stinger Experience" events in nine U.S. cities. There, people can take a Stinger, accompanied by a professional driver, through paces including a 0-60 mph acceleration run, alongside competitors like the Audi A5 and Porsche Panamera. It's also opened non-sales Stinger "salons" in shopping malls in several states. Related Video: Featured Gallery 2019 Kia Stinger GT Atlantica Image Credit: Kia Marketing/Advertising Kia Performance Sedan kia stinger gt kia stinger