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New details emerge on Inifiniti QX50’s unique new variable-compression engine

Infiniti will release the world's first production variable-compression engine when it releases the 2019 QX50 midsize SUV sometime next year. Now we have some new details on the innovative new engine, which Infiniti is calling VC-T, for Variable Compression Turbo, after the luxury brand offered a prototype test drive. We wrote extensively about the complicated technology underpinning the new engine last year. It's the latest novel development that could represent a range-extender, if you will, for the embattled internal combustion engine in an era when automakers and governments are shifting their focus to electric vehicles. The VC-T is a new inline-four, 2.0-liter that combines the power of a high-performance turbo gasoline engine with the torque and efficiency of an advanced diesel engine, but without the latter's notorious emissions. It features the ability to seamlessly raise or lower the stroke of the pistons in the combustion chamber, depending on the driving conditions it detects and inputs from the driver, to select the best compression ratio—anywhere between 8:1, typical for high-performance engines, and 14:1 for high efficiency. In essence, it delivers the performance of a V6 but is much more efficient, with improved fuel efficiency of between 10 to 15 percent with its best competitors, per Car and Driver. You can view how it works in motion via the video below. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. It's also quieter, more lightweight and compact than V6 engines with comparable power outputs, estimated at 268 horsepower and 288 pound-feet of torque. In a prototype test drive, Car and Driver writes that the engine "felt very conventional" and responsive, with strong and smooth acceleration. "The only indication you have that the compression ratio is changing is from an indicator in the instrument cluster next to the boost gauge." The engine is expected to deliver fuel economy gains of 27 percent in combined city-highway EPA rating over the outgoing QX50, which had a 3.7-liter V6. The 2019 model, fitted with the VC-T, should get about 26 mpg in combined fuel economy, and it will get to 60 mph almost one second faster than its four-cylinder counterparts, Nissan's chief powertrain engineer, Shinichi Kiga, told Automotive News. The VC-T engine is the result of 20 years of development spanning more than 100 prototypes and around 300 patents at Nissan.

Join Autoblog editors for a full video tour of the 2019 Detroit Auto Show

The 2019 North American International Auto Show might have been a little more quiet than past years, but there were still some pretty major reveals, including the Toyota Supra, new Ford Explorer, Shelby GT500, Subaru WRX STI S209 and Kia Telluride. We also saw some lovely concepts like the Nissan IMs and Lexus LC Convertible. Senior Editor Alex Kierstein, Consumer Editor Jeremy Korzeniewski and Senior Green Editor John Beltz Snyder join me, Associate Editor Reese Counts — with Social Media Manager Michael Dylan Ferrara behind the camera — on a long walk through the show. We discuss cars, poke around the stands, dress a bloody wound and answer your questions in the Facebook comments. For more Detroit coverage, you can check out Autoblog's picks for the best in show, listen to our podcast or look at the best images from all the reveals. Finally, don't forget to watch Editor-in-Chief Greg Migliore hand over our 2019 Technology of the Year award. Related Video: Green Detroit Auto Show Acura Cadillac Chevrolet Ford GM Hyundai Infiniti Kia Lexus Nissan RAM Subaru Toyota Volkswagen Truck Convertible Coupe Crossover Hatchback Minivan/Van SUV Videos Sedan facebook 2019 detroit auto show live

Recharge Wrap-up: Infiniti PHEV, free biodiesel?

In certain cases, biodiesel is so inexpensive that it is essentially free to use. Thanks to the decline of crude oil prices, other fuels, including biodiesel, have been following the trend. After setting new renewable fuel mandates, Congress also reinstated a $1-per-gallon tax credit for refiners. With such low prices, Midwest refiners are paying as low as $0.645 per gallon. In California, however, additional incentives mean some customers could get money back on the biodiesel they use, depending on the deals between producers and blenders and whether or not they share the credits. Read more from Ag Web. Infiniti is considering adding plug-in hybrid technology to its vehicle lineup. Infiniti CEO Roland Krueger says that it will leverage the EV expertise from Nissan for the electrification of its cars. Don't hold out for a luxury version of the Leaf wearing an Infiniti badge, though. When asked if an all-electric Infiniti were out of the questions, Krueger says, "Performance and the range are very important in the premium segment, so we believe that for Infiniti a hybrid or plug-in hybrid is the right proposition at this time." Read more from Automotive News Europe. Hyundai Tucson Fuel Cell drivers in California have logged a cumulative 1 million miles. With nearly 100 Tucson Fuel Cells sold so far in Southern California, these drivers have prevented some 385 tons of CO2 emissions. "Breaking the seven-figure consumer mileage barrier gives us new vision into the unlimited zero-emissions potential for Hyundai's fuel cell vehicles," says Hyundai's Mike O'Brien. "With our growing fleet of hydrogen-powered Tucson fuel cell vehicles accumulating one million miles this quickly, one can only imagine the unlimited potential for a zero-emissions hydrogen vehicle future." Read more in the press release below. Hyundai Tucson Fuel Cell Drivers Accumulate More Than One Million Zero-Emission Miles Cumulative Zero-emissions Miles by Southern California Fuel Cell Drivers Breaches the Seven-Figure Mileage Barrier Fuel Cell clean H2O emissions effectively replaced approximately 385 Tons of CO2 emissions compared with gasoline vehicles of similar size FOUNTAIN VALLEY, Calif., Feb.