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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.

The Kia Niro gets a plug-in model at Geneva

The Geneva Motor Show is usually a supercar event, but that didn't stop Kia from showing off the Niro hybrid. A new battery and some minor styling tweaks distinguish this Niro from the current model. The important part here is in the back of the little crossover. The standard Niro's 1.56-kilowatt-hour battery is replaced with a much higher capacity 8.9-kWh battery. When we test drove the standard Niro, Kia's representatives told us this battery should propel the Niro PHEV about 25 miles on a charge. For the European release, the range is listed as 55 km, which converts to 34 miles. However, this is likely a quirk of European fuel economy testing, which often yields higher numbers than American testing. Regardless, the Niro will have an electric range in the same ballpark as the Prius Prime plug-in hybrid. The new battery, besides offering more range, is also physically larger. It's placed under the cargo floor and rear seat, and the larger size means the cargo area shrinks by a little over 3.5 cubic feet. However, Kia says that the rest of the interior is unaffected. And an unusual note, Kia will offer a towing package that will allow the Niro PHEV to pull a trailer with brakes weighing up to roughly 2,900 pounds, although it's unclear if this is a European-only option. The Niro PHEV has a few minor styling tweaks as well. The chrome trim on the front and rear bumpers now has slim light-blue lines along the edges. The black rub strip along the doors on the normal model is now a metallic finish on the plug-in. The headlights are changed, too. Square-shaped projectors take the place of the round units on the standard model. The Niro plug-in will go on sale in Europe in the third quarter of 2017. We were told by Kia representatives on the standard car's press drive that it would arrive here by the end of the year. Related Video:

Kia reveals Sportspace concept ahead of Geneva

If you were wondering why Kia kept the back end of its upcoming new European concept hidden from view in the previous teaser, one look at these latest images should tell you why: Though the show car is tipped to preview the replacement for the Optima, this one's packing a wagon body-style. Dubbed the Sportspace concept, this D-segment/midsize estate was penned at Kia's European design studio in Frankfurt and is set to bow at the upcoming Geneva Motor Show. The Korean automaker isn't telling us much about it, except to emphasize that it was designed as a grand tourer "without sacrificing the performance, sustainability and economy that Kia is known for." We wouldn't be surprised, then, to see some sort of high-output hybrid system in place under the hood. The design bears all the hallmarks of a modern Kia, with the tiger-nose grille up front and clean lines throughout, but tapering back to a wagon's tail that reminds us of the Alfa Romeo 159 Sportwagon – which is no idle praise. Whether that means the next-gen Optima will be offered in wagon form in Europe (where they're in particularly high demand) or anywhere else, however, remains to be seen. Kia SPORTSPACE concept to be unveiled at Geneva (SEOUL) February 17, 2015 – Kia Motors Europe will unveil an innovative new concept, the Kia SPORTSPACE, at the 85th Salon International de l'Automobile in Geneva on 3 March 2015. Created for long distance driving, the SPORTSPACE has been designed for fast and efficient travel with maximum comfort and minimal stress, in the best grand touring tradition of the weekend getaway. Designed at Kia's Frankfurt design studio, under the direction of Gregory Guillaume, Chief Designer Europe, the SPORTSPACE features a unique and captivating body shape. The car is born out of a commitment to provide stylish and exciting transportation for four which is also spacious and functional, without sacrificing the performance, sustainability and economy that Kia is known for. Recognisably a Kia due to its signature 'tiger nose' grille, finely judged proportions and simple, clean surfaces, SPORTSPACE has a bold, dynamic shape with real road presence. At the same time, it offers a high level of interior comfort and substantial practical load space.