2011 Hyundai Sonata on 2040-cars

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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.

Keep it simple, stupid | 2017 Hyundai Ioniq Hybrid and Plug-In First Drive

The Ioniq is Hyundai's "golden medal project," conceived from the outset as a car to beat the Toyota Prius and be the most efficient on the market. Ki-Sang Lee, Hyundai's senior vice president in charge of eco R&D, promised that if they could accomplish that feat, he'd give every single engineer on the project a gold medal. The result of their work is an attractive trio – hybrid, plug-in hybrid, and electric – built on the company's first dedicated green vehicle platform. And Lee gave out more than 500 gold medals to his engineers. With a growing number of drivers – bolstered by Millenials replacing the buying power of baby boomers – who value efficiency and consider the environmental impact of their purchases, hybrids and electric cars should be a popular choice, right? While cheap gas has not helped to encourage people to make the switch to greener vehicles in the last couple years, the added cost and complexity of electrified cars have also been barriers to wider adoption. Hyundai's approach appears solid. The Ioniq hybrids are straightforward, affordable, and something drivers would be proud to own without appearing smug. So Hyundai has built the car people claim to want, but will the drivers show up at dealerships? The Ioniq is attractive for a number of reasons, not the least of which is pricing. The Ioniq Hybrid starts at $23,035, undercutting the Toyota Prius by $2,535 (with its base MSRP of $25,570). It's also more efficient, with EPA mpg figures of 57 city/59 highway/58 combined. The most efficient Prius (the Two Eco trim level) falls slightly short at 58 city/53 highway/56 combined. While the Ioniq Plug-In Hybrid doesn't have price or fuel economy figures yet – it doesn't go on sale until the fourth quarter of 2017 – we do know its 8.9-kW battery pack offers over 27 miles of all-electric range and can be topped off in 2.5 hours on a Level 2 charger. The Ioniq's green cred doesn't stop at its efficient powertrain. Sitting inside the cabin, you wouldn't realize that the soft plastics contain 25 percent sugar cane, or that the headliner and carpet contain about 20 percent of the same renewable plant material. There's no way to tell by look or feel that door trim uses recycled plastics mixed with wood powder and volcanic stone, making it 20 percent lighter. Interior metallic paints use soybean oil to lessen their environmental impact. Even better, it all agrees with the senses.

Aston Martin DBX and the craziest car redesigns | Autoblog Podcast #716

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor James Riswick. They chat about slumming it in the Aston Martin DBX, the brand's first SUV, which they didn't have terribly high expectations for yet utterly blew them away. Riswick in particular notes it's one of the best cars he's ever driven, describing it as a family GT car. They then switch to a very different family vehicle: the 2022 Kia Carnival, and the unique second-row seating arrangement we've dubbed the "Captain Kirk chair." Greg has also been driving the Chevrolet Tahoe Premier. They also chat about two of Riswick's recent features: the 20 craziest car redesigns of the past 20 years and the best cars for snow.  Autoblog Podcast #716 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 Aston Martin DBX 2022 Kia Carnival 2022 Chevy Tahoe Features 20 craziest car redesigns of the last 20 years Best cars for snow 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: 2022 Chevy Tahoe Premier Walkaround | Autoblog Short Cuts