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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 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

Lexus GX and TX, and Volvo EX30 revealed | Autoblog Podcast # 784

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Associate Editor Byron Hurd. They've been driving the Mercedes-Benz GLB Class, as well as the Kia EV6 and EV6 GT. In the news, the new Lexus GX and TX SUVs have been revealed, Ram previewed its compact Rampage truck, Chevy has a Panther-inspired Camaro Collector's Edition, and Volvo unveiled is EX30 city EV. Our hosts take to Reddit for car recommendations, and to the Mailbag for beer tips. Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast # 784 Get The Podcast Apple Podcasts – Subscribe to the Autoblog Podcast in iTunes Spotify – Subscribe to the Autoblog Podcast on Spotify RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown Cars we're driving 2023 Mercedes-Benz GLB Kia EV6 vs. EV6 GT 2024 Lexus GX revealed 2024 Lexus TX revealed Ram Rampage is a 1500-like unibody truck for Latin America 2024 Chevy Camaro Collector's Edition pays tribute to Panther code name 2025 Volvo EX30 revealed Spend my Money Mailbag Feedback Email – Podcast@Autoblog.com Review the show on Apple Podcasts Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related video: