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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.

2015 will be the biggest year ever for cars at CES

Like the SEMA Show, major automakers are paying increasing attention to the CES, with 2015 expected to be one of the most auto focused yet. Ford, Volkswagen, Toyota, General Motors, Hyundai, Mazda, Audi, BMW and Fiat Chrysler Automobiles will all be in attendance when CES 2015 kicks off next week, taking up a record-breaking 165,000 square feet of space at the Las Vegas Convention Center. "We've come a long way from a single car on a carpet," Ford's Alan Hall told Bloomberg. Unlike SEMA, or a more traditional auto show, like the upcoming festivities in Detroit, CES doesn't necessarily focus on entire cars or the way they perform, but on the way our technology will interact with vehicles, and in how those vehicles will deliver information to drivers. "CES has become a major launch point for a lot of the big automakers," IHS tech analyst Mark Boyadjis told Bloomberg. "CES is a way for them to get on a global stage for technology." As for what kind of wares automakers will trot out in Las Vegas, we already know that BMW will show off an autonomous i3 electric car that can navigate its way through a multistory car park and can be hailed via a smartwatch app. According to Bloomberg, Hyundai will show off its own smartwatch app for the Genesis sedan, while Audi and Mercedes-Benz will show off autonomous vehicles next week. Automakers won't be the only companies looking to capitalize on CES. Tech firms, like chipmaker Nvidia, are becoming increasingly involved in the automotive game and will be in town showing their wares off to OEMs. "Two years ago, our booth would have been filled with PCs and people playing video games," Danny Shapiro, Nvidia's senior director for automotive business, told Bloomberg. "This year we made a strategic decision to shift the focus of the booth on automotive and de-prioritize some of the other things." Needless to say, you can expect to see a lot of news out of Las Vegas come next week. Stay tuned. News Source: BloombergImage Credit: Julie Jacobson / AP CES Audi BMW Chrysler Fiat Ford GM Hyundai Mazda Toyota Volkswagen Technology CES 2015

Genesis wins J.D. Power Tech Experience Study for third straight time

The results are out for the J.D. Power 2023 U.S. Tech Experience Index (TXI) Study, which "focuses on the user experience with advanced vehicle technology as it first comes to market and is an early measure of problems encountered by vehicle owners." Its measurement metric is problems per 100 vehicles (PP100), same as with the J.D. Power Initial Quality Study (IQS). The takeaway this year isn't that owners aren't using advanced technologies, as was the case with the 2022 study, or that they're having more problems with them overall. It's that owners of battery-electric vehicles are having more problems with advanced tech than owners of ICE-powered vehicles. According to the study, 17 of 21 features that can be had on both propulsion types — such as remote parking assistance and gesture controls — get lower satisfaction ratings by owners of BEVs, in some cases nearly 20 PP100.  The survey organization says this tracks with what its found in the IQS, where total vehicle problems were "46% higher among BEVs (excluding Tesla) than ICE vehicles and satisfaction is lower among owners of BEVs across nine of 10 APEAL categories than among owners of ICE vehicles." Findings regarding biometric measurements are among those that go against the overall study findings. Whether a fingerprint reader or an eye tracker, car owners in general said "they do not consider them to be useful." In terms of ease-of-use and satisfaction, plug-and-charge capability on EVs gets good marks. This allows EV owners to plug into a public charger and have payment taken care of automatically; the vehicle communicates with any charging station compatible with an automaker's plug-and-play system, so the vehicle can automatically submit a bill for the charging session to a central owner account with no further action needed at the station. Survey respondents noted a mere 6 PP100 and an 88.9% satisfaction.    Among manufacturers, repeat winners took the top prizes. Genesis earned the highest rank for innovation overall and among premium brands for the third straight year. Hyundai not only won the tech innovation banner for mass market brands for the fourth straight year, ahead of Kia, GMC, Ram and Subaru, Hyundai finished in second in the overall standings. On that overall chart, the top five are Genesis, Hyundai, Cadillac, Lexus and BMW. On the premium chart, Genesis is followed by Cadillac, Lexus, BMW and Mercedes-Benz in the top five. It wasn't close from the first to the rest, though.