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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.

Consumer Reports says infotainment systems 'growing first-year reliability plague'

The Consumer Reports Annual Auto Reliability Survey (right) is out, and the top two spots look much the same as last year's list with Lexus and Toyota in first and second place, respectively. However, there are some major shakeups for 2014, with Acura plunging eight spots from third in 2013 to 11th this year, and Mazda replaces it on the lowest step of the podium. Honda and Audi round out the top five. This year's list includes six Japanese brands in the top 10, two Europeans, one America and one Korean.
Acura isn't the only one taking a tumble, though. Infiniti is the biggest loser this year by dropping 14 spots to 20th place. Other big losses come from Mercedes-Benz with an 11-place fall to 24th, and GMC, which declines 10 positions to 19th.
Perhaps unsurprisingly, it's not traditional mechanical bugs hauling down these automaker's reliability scores. Instead, pesky problems with infotainment systems are taking a series toll on the rankings. According to Consumer Reports, complaints about "in-car electronics" were the most grumbled about element in new cars. Problem areas included things like unresponsive touchscreens, issues pairing phones and multi-use controllers that refused to work right.

2020 Kia Soul EV earns 243-mile EPA range rating

Kia is diving head first into the world of electric cars, and now we know how far its new Soul EV can go on a full charge: 243 miles, according to its EPA rating. This officially makes it the longest-range EV in Kia's lineup, because the Niro EV is rated for 239 miles. The Hyundai Kona bests them all with a 258-mile range, though. We got to see the Soul EV at the Los Angeles Auto Show last year for the first time, but could only guess at the range then. It was expected to see huge gains compared to the first electric Soul, which is rated at 111 miles in its last year of duty here in 2019. Range similar to the Niro and Kona is no surprise, as it borrows the powertrain out of those cars. A 64 kWh battery pack provides juice for an electric motor producing 201 horsepower and 291 pound-feet of torque. DC fast charging is standard and you can adjust the brake regeneration power via paddles behind the steering wheel. Anyone looking at an EV from Kia or Hyundai is going to have to make a choice when it comes to bodystyle, because they won't lose or gain much on the powertrain and efficiency side of things. A 243-mile range is more than sufficient to compete in the electric vehicle world right now, especially if you can get that range on the quirky but lovable Soul. The Bolt EV is sitting at 238 miles of range, and the new Nissan Leaf E+ can go 226 miles before fully depleting its battery. You'll be able to choose between the normal Soul EV or the Soul EV Designer Collection at launch. The Designer trim gets a two-tone paint scheme along with other additions like a leatherette interior, 10-speaker audio system and wireless charging. Pricing isn't available yet, but will be announced closer to the on-sale date. Kia says to expect it in the first half of this year. Related Video: