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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.

Kia Venga puts a fresh face on mini minivans

Minivans in America have grown to become anything but mini. That's not the case overseas, however, where Ford offers the B-Max, Citroen the C3 Picasso and Kia the Venga. On the European market now since 2009, the Venga shares its underpinnings with the Soul and with the Hyundai i20. The shape which Peter Schreyer sketched for it won a prestigious iF Design Award upon its debut, but five years later, it was time for a bit of a refresh. Debuting alongside the updated Rio at the Paris Motor Show, the new Venga has received some updated sheetmetal, an upgraded cabin and enhanced equipment – all the better for transporting a (small) family around some European metropolis, where the streets are narrow and the parking even tighter.

In lifetime analysis, Kia Soul EV is way, way cleaner than diesel model

The heart of the matter is that the battery-electric Kia Soul is better for the environment. And not just because it doesn't create any emissions while on the road. From beginning to end, the Soul EV has a far lower environmental impact than its more conventional counterparts. TUV Nord, the German technical inspection group, says the Soul EV has a carbon footprint that is 40-percent smaller than the one from the diesel-powered Soul sold in Europe. That's factoring in everything from the materials that go into building the car to the recyclability once it's defunct to, of course, tailpipe emissions. Or lack thereof. Kia plans to start sales of the Soul EV in its native South Korea sometime this year and is keeping global sales expectations modest, saying it plans to make about 5,000 Soul EVs annually. The car will be priced at the equivalent of about $39,000 US in South Korea, though government subsidies will cut that down a bit. Kia hasn't set an official launch date for the car in the US, but expects for the Soul EV to be available to Americans by the end of the year, Kia US spokesman James Hope told AutoblogGreen. Check out the press release about the Kia Soul EV's TUV Nord score below and read our First Drive impressions of the model here. Kia Soul EV earns whole-life environmental certificate - Soul EV achieves major TUV Nord Life Cycle Assessment (LCA) certificate - ISO 14040 certification considers whole-life environmental impact of Soul EV (SEOUL) June 18, 2014 – The Kia Soul EV has become the latest model from the Korean brand to earn important certification for its outstanding whole-life environmental credentials. TUV Nord, an independent technical inspection organisation, has certified the new Kia Soul EV according to the ISO 14040 Life Cycle Assessment (LCA) standard. LCA examines the environmental impact of both the car and the overall manufacturing process throughout its whole life, taking into account factors such as choice of materials, tailpipe emissions and recycling. Comparing the Soul EV to its diesel counterpart currently on sale in Europe, the zero-emissions electric vehicle scored particularly strongly for 'Global Warming Potential', emitting 39.7% fewer greenhouse gases over the whole life of the vehicle, such as carbon dioxide and methane.