2011 Kia Sorento Lx Sport Utility 4-door 3.5l on 2040-cars

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Senator calling for answers from Hyundai and Kia over MPG debacle

Hyundai and Kia have already gone public with plans to make good on the inflated fuel economy claims scandal that has rocked both companies in recent weeks. But one US senator, Jay Rockefeller (D-WV), is skeptical that the general public will see much good from the proposal, and he's looking for answers.
To recap: Hyundai/Kia have agreed to compensate owners of 900,000 affected vehicles for real versus previously claimed fuel mileage (as well as adding in a one- fifteen-percent premium), by way of pre-loaded debit cards. It has been speculated that this payout could crest $100 million by the time the Korean automakers are done writing checks.
Said Rockefeller to The Detroit News, "While I believe this is a positive step, I am concerned that many affected customers may not learn about the program or may find it burdensome to participate in the program." Rockefeller would reportedly like to see a monitoring system for the paybacks more clearly defined, with the goal being as many wronged car buyers as possible getting the recompense that they're due.

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.

2014 Kia Optima Hybrid shows its freshened face

Think back to the 2013 New York Auto Show, and you'll recall that the already attractive Kia Optima midsize sedan was re-schnozzed for the 2014 model year. The hybrid version was left alone, visually, though its powertrain was updated to provide more oomph and slightly better fuel economy. And now, the whole thing comes full circle - the fresh-faced 2014 Optima Hybrid is making its debut here at the Chicago Auto Show.
The new look is really the only news here, with a reworked front fascia that combines restyled Hybrid-specific LED lighting elements and new enhancements that Kia says improves aerodynamics. A similar touch-up has been given to the rear end, and new 16- and 17-inch wheel designs are also available.
Under the hood, the Optima Hybrid's powertrain is unchanged, the four-cylinder gasoline-electric system still putting out a combined 199 horsepower and 235 pound-feet of torque. Fuel economy is also unchanged for 2014, with the LX model estimated to achieve 36/40/38 miles per gallon (city/highway/combined), and the higher-grade EX estimated to net 35/39/37 mpg.