2014 Hyundai Sonata Limited on 2040-cars

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Hyundai Mingtu revealed on billboard ahead of Shanghai

The so-called Hyundai Mini-Sonata now has a proper name. Called the Mingtu in China, this new sedan will slot in between the compact Elantra and midsize Sonata, and it sports a pretty nifty look.
We've known for a while now that Hyundai is working on a more mature version of its Fluidic styling language, the first fruits of which showed up in the latest Santa Fe, and the Mingtu seems to take that refined appearance to the next level with a refined look of creased lines, a chiseled fascia and a smooth greenhouse.
There's no indication that this car will be offered in the US market, but it's certainly possible that some of its styling elements will carry over to the next Elantra or Sonata. In any case, expect a range of 1.8- and 2.0-liter four-cylinder engines to be announced for the Chinese market when the Mingtu makes its official debut at the Shanghai Motor Show this weekend.

Hyundai admits 'error' in KDM Sonata fuel economy announcement

Stop us if you've heard this one before: Hyundai is going to have to reduce the officially announced miles-per-gallon number for its 2014 Sonata. While there's a lot of similarity between this new situation and events that transpired in 2012, there are some important differences. For one, the new mileage mistake, which Hyundai says was once again caused by an error at its test centers, is only applicable to cars in the Korean Domestic Market. Secondly, it's not so much mpg as kilometers per liter. "We are very sorry for causing confusion to reporters" - Hyundai According to Reuters, the numbers for the Korean Sonata were originally announced as 12.6 kilometers per liter (29.63 mpg), a six-percent increase over the previous model. The automaker has just announced that government verification showed an actual result of 12.1 kpl (28.46 mpg), which is only a two-percent increase. Since these numbers were done using the South Korean economy test, they are not equivalent to the US EPA numbers, the latter of which say the 2014 Sonata gets 36/40/38 miles per gallon. The correction came before the new Sonata went on sale in South Korea. In an official statement, Hyundai said, "We are very sorry for causing confusion to reporters." Hyundai Motor America's Jim Trainor, product public relations senior group manager, assured AutoblogGreen that the Korean error will have "no effect" on US ratings. In 2012, Hyundai and Kia faced a media and consumer firestorm after being caught up in exaggerated mileage claims for vehicles like its 2013 Accent, Veloster and Elantra. The sister companies agreed to compensate buyers to the tune of $395 million for what they said were "honest mistakes" and "human error" during in-house fuel economy tests. There is no word yet on whether similar customer satisfaction actions will follow this domestic market snafu.

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.