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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.

Superman-themed Kia Optima Hybrid definitely not faster than a speeding bullet

The Justice League of America's garage is filling up quickly, with Kia and DC Entertainment unveiling its sixth of eight super hero-inspired vehicles at the Chicago Auto Show today. The vehicles are being used to raise awareness for DC Entertainment's "We Can Be Heroes" giving campaign.
The latest Kia to get the super hero treatment is the Optima Hybrid, which draws on the almighty Superman for inspiration. We're not sure what to make of this thing, honestly, as neither Clark Kent nor Kal-El would be caught dead in it (unless it's got the optional Kryptonite seatbelts, of course). Rather, this looks like what we imagine a Superman fanboy would construct if given carte blanche to ruin an Optima Hybrid. The actual design and construction were handled jointly by Kia, DC Entertainment and Super Street magazine.
We'll let the pictures do the talking in terms of what modifications were made since they're all cosmetic. That is, no mechanical mods were done to make the Kia Optima either faster than a speeding bullet or more powerful than a locomotive (shame).

2020 Kia Niro electric car gets a $590 price hike

Kia Niro EV shoppers will need to budget a little more for the purchase, the South Korean automaker raising the price on its only U.S.-market electric car by $590. Cars Direct spied an order guide saying that after a $1,120 destination charge, the base Niro EX electric will climb from $39,620 to $40,210. The only other trim, the EX Premium, goes for $45,120 for the 2019 model to $45,710. The prices don't include the potential $7,500 federal tax credit or other incentives the hatchback still qualifies for. Adjustments to the EV MSRPs compare to price increases of $990 and $1,190 for the two trims of the 2020 Niro PHEV, and a mix of price drops and increases of several hundred dollars for the standard Niro's rearranged trim line.     Around this time last year, the Niro EV cost $1,500 more than the Hyundai Kona EV, now the Kia and Hyundai are separated by $1,900. The Niro EV's 64-kWh battery can power its 201-horsepower motor up to 239 miles of EPA-rated range, the Kona EV, with the same mechanical specs, is EPA-rated for up to 258 miles. Kia didn't make any changes to the 2020 Niro EV other than price. The whole Niro lineup, however, debuted its new refresh at last year's L.A. Auto Show. That brought tweaks to the front fascia such as new headlights and fog lights and a grille with diamond-shaped inserts, the electric Niro distinguished from the other two powertrains by getting a single chevron fog light instead of dual chevron lights, omitting the chrome underlining on the grille, and picking up blue accents around the lower intake. In back, there's a redesigned housing for reflector units in the bumper, and more blue highlights. Inside, a redesigned, seven-inch digital instrument cluster sits behind the steering wheel, and new optional driving aids include lane following and lane-keeping assist. Meanwhile, the wait continues for the Kia EV we really want, the fun and less expensive battery-electric Soul and its 243-mile EPA-rated range.  Related Video: