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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 sold 123 North American Soul EVs in October

How happy were those Kia hamsters last month? We're guessing they were pretty pleased, because reports are out that the South Korean automaker sold 123 Kia Soul electric vehicles in North America during the model's first month of sales on the continent. Now crank up that funky music. Kia sold 109 Soul EVs in the US and another 14 in Canada, Kia-World reports (the site is unaffiliated with the automaker). Kia's expected to move about 5,000 Soul EVs in North America by the end of next year. Kia spokesman James Hope, in an e-mail to AutoblogGreen, said the automaker doesn't specifically disclose the number of gas and electric Soul models it sells in North America. Those volume numbers are on par with lower-volume electric variants of conventional models that are generally positioned as "compliance" vehicles (i.e., vehicles sold specifically to comply with California's zero-emissions vehicle mandate). For instance, the Ford Focus Electric sold 186 units in the US last month, while the Smart ForTwo ED electric moved 150 vehicles. Honda sold 23 Fit EVs in October. The Kia Soul EV has base price of $33,700 and a single-charge range of 93 miles. You can read our Quick Spin impressions of the new EV here.

Minivan Mania | Autoblog Podcast #675

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor, Green, John Beltz Snyder and West Coast Editor James Riswick, and this week, it's (almost) all about vans! James recently wrote a head-to-head comparison of the 2021 Toyota Sienna and 2021 Chrysler Pacifica Hybrid, and he talks us through the results. John recently reviewed the 2022 Kia Carnival, which is replacing the Kia Sedona. After discussing the minivan field as a whole, our editors identify some reasonable minivan alternatives in the SUV and crossover realms. Moving along, they talk about driving the long-term Hyundai Palisade and the new Mitsubishi Outlander before discussing their favorite highlights from the 2021 Shanghai Auto Show. Autoblog Podcast #675 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 Minivans! 2021 Toyota Sienna vs 2021 Chrysler Pacifica Hybrid 2022 Kia Carnival The rest of the field Ute alternatives Cars we're driving 2022 Mitsubishi Outlander 2021 Hyundai Palisade road trip Shanghai Auto Show Lincoln Zephyr Toyota bZ4X Honda SUV e:prototype Feedback Email – Podcast@Autoblog.com Review the show on iTunes 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: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.