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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.

Chevy Traverse, Hyundai Santa Fe revealed; Buick Envista, BMW M4 CSL driven | Autoblog Podcast #790

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor John Beltz Snyder. After some banter, including the discussion of an excellent tomato sauce recipe, they get into car reviews. Greg has been driving the Mercedes-AMG GLE 53, while John has been testing the BMW M4 CSL and Buick's new Envista crossover. There's lots of interesting news this week. Chevy revealed the 2024 Traverse with new looks, a new engine and on off-road(ish) trim. Hyundai gave us a glimpse at the wild styling of the next Santa Fe. Dodge might bring back the Stealth nameplate as an SUV, and that has implications for the Durango as well. Ford, after repeatedly raising prices, has turned around and significantly discounted the F-150 Lightning across all trims. The first Tesla Cybertruck has rolled off the line as a pre-production prototype. Finally, we reach in to the mailbag and help a listener decide what to do with cars for himself and his kids in this week's Spend My Money segment. Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast #790 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-AMG GLE 53 2023 BMW M4 CSL 2024 Buick Envista 2024 Chevrolet Traverse gets rugged looks, new turbo engine, Z71 trim 2024 Hyundai Santa Fe revealed with a radical redesign Dodge Stealth coming with new platform, looks, and powertrains in a year (Bonus reading: check out Dodge Stealth listings) Ford F-150 Lightning gets significant price cut across the full range First Tesla Cybertruck pre-production prototype comes off the line Spend My Money 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: Green Podcasts BMW Buick Chevrolet Dodge Ford GM Hyundai Mercedes-Benz Tesla Truck Crossover SUV Electric Future Vehicles Luxury Off-Road Vehicles Performance

Krafcik says US Gov. shutdown is slowing Oct. auto sales

The government shutdown is eroding consumer confidence in the auto market, says John Krafcik, CEO of Hyundai's US sales unit, and could lower October sales by as much as 10 percent, Automotive News reports. "It's that anxiety that keeps customers, potential buyers, on the sidelines when making a big purchase like an automobile," Krafcik says, adding that industry sales could be off by five to 10 percent in October compared to September.
The fourth quarter, which started October 1, usually consists of increased auto sales as dealerships clear their lots to make room for the next year's models. Leading up to the fourth quarter this year, the auto industry was doing well in the fragile, recovering US economy, although September deliveries decreased by 4.2 percent, due in part to this year's Labor Day sales being recorded for August.
To help its customers, Hyundai announced it is deferring new-car loan and lease payments for furloughed federal workers until they're called back to work and also offering them a three-month payment deferral if they buy a new Hyundai in October. "We have already had requests from over a thousand people to have their payments deferred," Krafcik says.