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Hyundai, Kia want to improve fuel economy by 25 percent

Hyundai and sister company Kia are giving themselves a little bit of time to make up a lot of ground in the fight for better fuel economy. We wonder if a recent multi-million fine might have something to do with this public target. The connected South Korean companies are vowing to increase their fleetwide fuel economy by 25 percent by 2020, Reuters reports. This will be done by further advancing their powertrains, looking at other ways to reduce weight, upgrading diesel engines and improving transmissions. That will all take money, but Kia and Hyundai will have $300 million less to invest thanks to a recent fine of more than $300 million from the US Environmental Protection Agency (EPA), the Department of Justice and the California Air Resources Board (CARB) for incorrect fuel economy numbers on around 1.2 million vehicles from the 2011-2013 model years. The civil penalties – $100 million of the total – are the largest in EPA history. In late 2012, Hyundai and Kia admitted to overstating the fuel economy of a number of models and said they'd change the official MPG figures and compensate owners. Hyundai spokesman Chris Hosford confirmed to AutoblogGreen that the company set the dramatic fuel-economy improvement targets. In the US, where Hyundai and Kia are operated as separate entities, Hyundai "remains committed to meeting the CAFE (Corporate Average Fuel Economy) requirements that have been set out by the US government," Hosford said The EPA recently released a report on fuel-economy and put Hyundai fourth in overall fleetwide fuel economy in the US among vehicle makers for the 2014 model year. The top three were Mazda, Honda and Subaru.

2015 Kia K900 debuts as brand's RWD flagship model

Despite the fact that executives at both Hyundai and Kia alike have said on numerous occasions that the two companies are separate entities (and largely, they are), there's still a lot that's shared between the two brands. Common platforms and powertrains are found in a number of different Hyundai and Kia products, though the end results have typically been cars that, to the consumer's eye, are quite different. So when Hyundai got its first rear-wheel-drive sedan, the Genesis, a few years ago and followed it up with the larger, more luxury-oriented Equus, it was only a matter of time before sister company Kia got a slice of the RWD pie. And the first product to use this architecture is this, the new K900 sedan that makes its debut at the LA Auto Show.
Kia will offer the K900 with both V6 and V8 power.
Think of the K900 as something of a mix between the Genesis and Equus. All three share the same platform, but the K900 share the Equus' 119.9-inch wheelbase, as well as its front and rear tracks measured at 63.8 and 64.1 inches front and rear, respectively. But unlike the V8-only Equus, Kia will offer the K900 with both V6 and V8 power, like the Genesis. In fact, the K900 will offer the same two engines, although tuned slightly differently, as the Genesis: a 3.8-liter V6 producing 311 horsepower (no torque output is listed as of this writing) and the company's 5.0-liter Tau V8 producing 420 horsepower (oddly, Hyundai rates the Genesis and Equus at 429 hp with this same engine, though that's with premium fuel). Eight-speed automatic transmissions are standard with either powerplant, with Eco, Normal and Sport shift settings.

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.