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Hyundai Prius-Fighter Hybrid could preview next attack on Toyota's champion

Hyundai is no stranger to the hybrid game, selling a gas-electric version of the Sonata in the US since 2011. The 2015-model-year version gets 38 miles per gallon combined, which is certainly admirable but not quite in the same league as the hybrid champion Toyota Prius (50 mpg combined). New spy shots reveal that Hyundai might be finally ready to targeting the non-plug-in fuel economy leader. Why else would some mysterious Hyundai prototypes be cruising through the desert hills with a few Priuses in tow?
Our photographers believe these mules hint at an all-new hybrid model, which makes us think of the Blue Will concept from the 2010 Detroit Auto Show. At the time, Hyundai said the concept could be a preview of a future dedicated hybrid that would compete with the Prius.
We don't know what it all means for sure, but our spy photographers found four heavily modified Elantra GT prototypes driving around with a standard Prius and a Prius V. As if that wasn't enough of a clue, the four changed Elantras represent different approaches Hyundai might be using to go after Toyota, since there were two versions driving by our photographer's lenses, with different rear extensions indicating that both the standard Prius and the larger V might be in Hyundai's sights.

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.

2018 Hyundai Sonata Sport Quick Spin Review | Returning to the revolution

The 2018 Hyundai Sonata represents a course correction of the sort that just wasn't needed with the previous-generation model. Besides a few added features here and there, that car really didn't change much during the course of its lifetime, and frankly, it didn't need to. When something works, don't screw it up. It arrived at a time when Honda and Toyota were pretty much phoning it in, and boasted a revolutionary design that quite literally changed the way midsize family sedans look to this day. Toyota designer Ian Cartabiano told me that Sonata was one of the few cars over the years that made his fellow designers wake up a bit and realize the game was changing. Then, after staging a revolution, Hyundai played it safe. The Sonata introduced three years ago was conservative to the point of anonymity outside, while not really moving the needle on the vehicle dynamics front. If there was one, clear area where that revolutionary Sonata fell short -- and indeed virtually every Hyundai -- it was in the sophistication and poise it demonstrated out on the road. Well, after the cool reception to the model redesign, Hyundai got a wake up call of its own. This 2018 Hyundai Sonata gets a rather significant facelift, adopting the curvy trapezoidal grille found on more recently introduced models, and ditching its conservative anonymity for a more organic overall appearance certainly in keeping with its "Fluidic Sculpture" predecessor. The rear was also redone with more tapered, dare I say "aggressive" taillights and the license plate relocated to the bumper. Is the end result a great-looking car? Shoulder shrug, but it's sure better than before. Compare the 2018 Hyundai Sonata to its rivals using the Autoblog Compare Cars tool. 2018 Hyundai Sonata Sport View 5 Photos However, I knew the 2018 Sonata looked different. I was quite frankly not expecting it to drive different, because when you review cars long enough, you start to know what a particular brand's cars feel like behind the wheel. There'll be subtle changes over the years, but the language remains the same. Well, the Sonata has been hitting the Rosetta Stone. The change is immediately apparent. The on-center steering feel is crisp, the turn-in more immediate and effort is consistent. It just feels "right" now whereas before turning the Sonata was one of numb indifference.