2015 Hyundai Sonata Se on 2040-cars

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2013 Hyundai Veloster Turbo: June 2013

There are an awful lot of good reasons to get into the Hyundai Veloster family and formula. This car looks good, is loaded out with tech and offers a great deal of practicality in a small form factor. One good reason not to consider a Veloster, at least if you're a city dweller or have primarily urban daily driving path, is the turbocharged 1.6-liter engine in the eponymous Veloster Turbo.
Two major factors kill the Veloster Turbo in terms of said city driving: turbo lag and fuel economy.
Two major factors kill the Veloster Turbo in terms of city driving: turbo lag and fuel economy.

2014 Hyundai Elantra gets new 2.0L engine, Sport model, tweaked styling

Most of the attention at Hyundai has recently been focused on the next-gen Sonata and Genesis, but before we see either of those sedans, the automaker is giving its small car lineup a significant overhaul.
Just last week, Hyundai unveiled the refreshed 2014 Accent, and today at the LA Auto Show it's take the covers off of its updated 2014 Elantra. All three Elantra models - sedan, coupe and GT - will receive the same changes, but Hyundai has only released pictures for two of the sedan models: Limited (above) and Sport (inset).
The biggest news is that a new, more powerful 2.0-liter, direct-injected inline four-cylinder is now the standard engine in the GT and Coupe, as well as the Elantra sedan's all-new Sport trim level. This engine produces 173 horsepower and 154 pound-feet of torque, and while the 2014 Elantra GT can still be equipped with a six-speed manual or automatic transmission, the 2014 Elantra Coupe drops the option for a manual transmission; it also appears that the Elantra Sport sedan will come solely with the automatic. With the larger engine, fuel economy numbers do drop a little: all models powered by this engine receive EPA estimated ratings of 24 miles per gallon in the city. Highway estimates for this engine include 33 mpg for the GT with automatic, 34 mpg for the GT with manual and Coupe, and 35 for the Sport sedan. Sedan buyers looking for better fuel economy still have the carry over 1.8-liter engine with 145 hp, 130 lb-ft and EPA ratings of 28 mpg city/38 mpg highway.

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.