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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.

5 new EVs that make driving fun

One of the things enthusiasts bellyache about the most is electrification. The noisiest complainers say that EVs will suck the fun out of driving and can’t possibly be as engaging as a roaring gas engine. ItÂ’s undoubtedly true that the noises EVs make are not always as visceral and thrilling, but itÂ’s also true that electrification has ushered in a new era of performance that gas vehicles simply cannot match. WeÂ’ve gathered a list of EVs that donÂ’t suck to drive. We all know by now about Tesla and its Plaid models, which absolutely set the quarter-mile ablaze with their amazing acceleration figures. The vehicles on this list don't come from Tesla. Nor does the list include some highly anticipated performance EVs that will soon hit the market, such as the new 2024 Porsche Macan. This selection may be a bit short on range compared to tamer models, but at the same time, itÂ’s hard to ignore their specs and even harder to ignore the sensation that a full-throttle electric powertrain delivers. LetÂ’s dive in to see five new EVs that make driving fun. Porsche Taycan PorscheÂ’s gas-powered vehicles are among the most exciting on the road, so itÂ’s not surprising to see the automakerÂ’s first electric effort as a home run. The Taycan is available in a staggering number of configurations, ranging from the 375-horsepower base model to the massively powerful Turbo S models with up to 750 horsepower in temporary boost mode. Classic Porsche styling and high-end tech round out the package, making the Taycan one of the most desirable EVs today. That said, the TaycanÂ’s almost $91,000 starting price puts it out of reach for a majority of car buyers, and the prices keep steadily rising along with the performance. It also trades range for performance, as the least powerful variant is the most efficient, returning 242 miles with the extended-range battery. The car can take advantage of fast charging, however, and can recover up to 80 percent of its battery capacity in just over 22 minutes.   Kia EV6 GT How about a Kia that can out-accelerate many supercars, especially from a few years ago? The EV6 GT comes with two electric motors with a combined 576 horsepower and 545 pound-feet of torque. Its 0-60 mph time lands at just 3.4 seconds, and the EV offers a top speed of 161 mph, making it one serious Korean EV. At the same time, it features the standout styling of the standard model, which gives it a striking curb presence and a futuristic look that is unique among EVs.

2020 Kia Telluride Review & Buying Guide | A stylish and practical family hauler

The 2020 Kia Telluride joins the growing list of three-row family crossovers, adding a more rugged vibe to what has become a pretty sensible shoes segment. Its boxier styling and clean lines certainly imply that this big SUV could get dirty, although its rather pedestrian all-wheel drive system and average ground clearance would indicate it's mostly for show. Or at least, a hefty dump of snow. That's OK, folks wear outdoorsy garb from Mountain Hardwear and rarely visit the mountains. We're impressed by the new Telluride's spacious cabin, a massive features list and plenty of thoughtful, family-friendly details like USB ports in every row and second-row seats that slide and fold at the press of a button. The Telluride really steps things up in its range-topping SX trim, which unlike many competitors, looks and feels genuinely luxurious. The Telluride's well-balanced driving experience and impressive value round out a genuinely appealing three-row SUV that deserves serious consideration. What's new for 2020? The Telluride is an all-new model for Kia, filling the gap at the top of its SUV lineup. What's the interior and in-car technology like? Admittedly, we have only had contact with the ritziest, range-topping Telluride SX model that boasts soft, interestingly stitched leather, convincing faux wood trim, and a generally luxurious ambience that trumps everything else in the segment. Oh, and it costs less than range-topping rivals that actually have less equipment. Now, will an LX and EX be as swank? No, but the general quality of plastics, switchgear and other materials should still be above average. Every Telluride is also extremely well equipped. Check out the pricing and features section below for a full breakdown, but suffice to say, you don't need to pay top dollar to get heated and ventilated seats, sunshades and an abundance of infotainment features. Indeed, every Telluride comes standard with five USB ports, Apple CarPlay, Android Auto and satellite radio. An 8-inch touchscreen is standard (and is typically sized for the segment), yet the EX and SX features a wide 10.25-inch touchscreen that will not only impress your friends with its largesse, but it improves functionality as well. It brings with it wireless smartphone charging, integrated navigation and a grand total of seven USB ports spread throughout all rows.