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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.

Hyundai shutters engine development in shift to electric and hydrogen vehicles

Hyundai is quickly pivoting into an era of electric vehicles. Shortly after announcing it would halve the number of internal combustion models, it launched its first EV on its dedicated Electric Global Modular Platform (E-GMP), the supremely enjoyable Ioniq 5. Now, as The Korea Economic Daily reports, Hyundai Motor Group, which includes sister brand Kia and luxury brand Genesis, has closed its engine development division at its research and development center in South Korea to put those resources into electric powertrain development. According to the report, researchers from engine design are moving to its electrification design center, but a few remain behind to continue to refine existing internal combustion engines. The powertrain system development center will become an electrification test center, and the performance division will focus on electric performance. The group has also established a battery development center, and the R&D Center will also focus on raw materials for batteries and semiconductors. In an email, R&D boss Park Chung-Kook told employees, “Now, it is inevitable to convert into electrification. Our own engine development is a great achievement, but we must change the system to create future innovation based on the great asset from the past.” Hyundai Motor Group is targeting one million EVs a year by 2025, and full electrification by the year 2040. In addition to the newly launched Ioniq 5, Hyundai is planning to launch the Ioniq 6 EV, based on the stunning Prophecy concept, in 2022, and weÂ’ve already seen spy shots of that prototype in testing. That will be followed by the full-size Ioniq 7 SUV in 2024, which was recently previewed by the Seven Concept at the 2021 L.A. Auto Show. Kia is set to launch the EV6 in 2022, and Genesis recently revealed the GV60 electric crossover, both of which will use HyundaiÂ’s E-GMP architecture. Genesis also recently revealed an electric version of the GV70 crossover in China. Of course, Hyundai is also invested in hydrogen fuel cell vehicles, both commercial vehicles like its Xcient trucks, and passenger cars like the Nexo and the recently revealed Vision FK concept. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Kia finally unveils the all-new Stonic compact crossover

About a week after the global debut of the all-new Hyundai Kona compact crossover, sister company Kia rolls out its own B-segment fighter, the stylish Stonic. The two new models are going up against crossovers like the Honda HR-V, Toyota C-HR, Mazda CX-3, Nissan Juke, and Fiat 500X. This is a segment that's big on both style and practicality, and at first glance the Stonic fits both bills. We'll have to wait until this fall to get our hands on it. The Stonic is a handsome car, but its design isn't as bold as something like the Kona or the C-HR. The fascia looks like an updated version of the Kia Soul rather than a shrunken Sportage. The big rectangular eyes flank the corporate tiger nose grille, with a large lower air dam that hides the hardware for the active safety equipment. The profile once again eschews any ties to the Sportage, with hard character lines and a new C-pillar design. There is plastic cladding around the wheel wells and along the rocker panel. Like the Kona, the Stonic is available with a two-tone roof, but rather than being locked into a single color, the Stonic will offer five. That means there's a total of 20 paint combinations. Unlike the rest of the car, the rear of the Stonic pulls from other Kia SUVs. The taillights feature U-shaped LEDs, though there isn't a bod-width reflector like on the Sportage. There's a decent-sized rear spoiler and a faux skid plate on the bottom of the bumper. The hatch doesn't have a flat bottom, so we're curious if this will narrow the opening to the cargo area. The interior carries over the corporate design, with large, easy-to-reach buttons and knobs and large, clear gauges. There are body-colored accents on the dash, the console, and even the stitching on the seats. It's a simple way to brighten a dark cabin. The Stonic will get Apple CarPlay and Android Auto and will be available with heated front seats and keyless entry and ignition. All we have right now are details for the European model, so it's unclear what engines will make it to the US. Look for both the 147-horsepower 2.0-liter four-cylinder and the 175-horsepower turbocharged 1.6-liter four-cylinder to make an appearance. Both engines can be found in the Kona, paired to a six-speed automatic and a seven-speed dual-clutch transmission, respectively.