2014 Kia Optima Ex on 2040-cars

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Next-generation Kia Optima spied for the first time

On the heels of the completely redesigned Hyundai Sonata, one of our spy photographers has finally caught the next-generation 2021 Kia Optima out testing. It makes sense the family sedan would appear soon, since it will undoubtedly be based on the Sonata just like past Optimas. Unlike the Sonata, though, the new Optima looks like a very evolutionary design. The headlights are still wide and low in the nose. The "tiger nose" grille sits between the lights. It looks as though the grille may be a bit thinner than on the current model. The overall profile is still similar to the current model and the Kia Stinger, and it appears Kia will continue to have some interesting lines connecting the rear pillars and the roof. Among the subtle differences are a revised greenhouse. The pieces of glass just ahead of the C-pillars follow the curve of the roof more than the somewhat upright pieces on the current car. The rear taillights, though still thin and wide, now appear to protrude from the rear. This particular version also appears to have fake tail pipes. Though this is the first time we've seen the Optima, and it's still well-camouflaged, we expect to see the car revealed sometime next year. The reason is that the Sonata it's based on is nearly on sale, so a lot of the Optima's development is probably finished. It will likely share the Sonata's powertrains, which for now include a 191-horsepower naturally aspirated 2.5-liter 4-cylinder and a 180-horsepower turbocharged 1.6-liter 4-cylinder. Each of these is mated to an eight-speed automatic. A more powerful turbo four-cylinder should be available in the near future.

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.

Kia recalls 2006-10 Sedona and 2007-09 Sorento for risk of electrical short

Kia Motors has issued a precautionary recall on 228,829 units of 2006-10 Sedona minivans and 2007-09 Sorentos due to a rare possibility of a short circuit that could cause a fire in the engine compartment. Kia expects about 1% of the cited vehicles could have moisture in the anti-lock braking system (ABS) module. National Highway Traffic Safety Administration (NHTSA) campaign No. 20V088000 says that some 2006-2010 Sedonas and 2007-2009 Sorentos have a Hydraulic Electronic Control Unit (HECU) within the ABS module that could be susceptible to moisture damage. Should moisture enter the HECU, it could cause an electrical short circuit, which could then spark a fire. Because the HECU is energized when the car is turned off, this issue could arise even while the vehicle is parked.  Kia has yet to determine exactly how and why moisture is getting into the HECU, and it's not the first time this type of problem has caused a recall. Hyundai Motors recalled 429,686 Hyundai Elantra and Elantra Touring models for the same issue.  Because there isn't a certain root defect to fix, Kia has devised a plan to reduce the risk of fire. Kia will install a relay in the vehicle's main junction box, free of charge. This will prevent power from going to the HECU while the ignition is off. Kia will alert owners of affected vehicles starting April 10, 2020.  Kia and Hyundai have also been involved in completely separate engine-fire-related recalls in the recent past. Throughout the previous few years, Kia and Hyundai have recalled millions of cars, crossovers, and SUVs with faulty oil pans and high exhaust temperatures that damage catalytic converters. As a result, the NHTSA opened an investigative probe into Kia's and Hyundai's handling of the recalls and resolutions.   Related Video: