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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.

The Nissan Ariya was nearly the new Murano

NEW YORK — In addition to providing thoughts on a future Xterra while at the New York International Auto Show, Nissan Americas Senior Vice President and Chief Planning Officer Ponz Pandikuthira also talked with us a bit about EVs, and more specifically model lines and nameplates. We've seen a few strategies ranging from almost completely new and parallel model lines (such as Hyundai's Ioniqs and Kia's EV#s), to reusing old names on still similarly parallel models (such as Chevy's Equinox, Blazer and Silverado EVs), and of course blends of the two. So far, Nissan has gone with the separate model route with Leaf and Ariya, but that may not be as much the case in the future. Pandikuthira noted that now, consumers don't have as much interest in their EVs being some completely unique, statement piece. As such, both Nissan and Infiniti will be adding EVs to existing nameplates more so than totally new model lines. He didn't say whether they would simply be electric variants of existing internal combustion models, or something like Chevy's model, though. But he did note that the Nissan Ariya was, at one point, considered as a possible Murano successor. It certainly would make sense to us. The Ariya is a distinct-looking crossover, and one with a very upscale interior, both key tenets of the Murano from that model's introduction in the early 2000s. Plus, the Murano is in pretty dire need of a replacement, as the current generation dates back nearly a decade ago to the 2015 model year. The reason Pandikuthira gave for the Ariya decision was that the crossover represented enough of a change in Nissan's EV technology and capabilities that the brand wanted to highlight that with a unique nameplate. Nissan won't be ruling out the possibility of new EV-only models, though. Just like with Ariya, Pandikuthira told us that if a planned car is unique enough, the company will still be open to a new line. But expect more, say, electric Rogues and Altimas than totally new names. Related video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Cadillac CT6 ushers in new naming convention

Johan de Nysschen has been at his new post as president of Cadillac for not even three months , but he's already seen two of his most notable accomplishments from his two-year tenure as president of Infiniti matched by Cadillac. The brand has announced that it is relocating its headquarters, and is now officially changing its nomenclature.
The brand's new flagship model will abandon the familiar three-letter designation enjoyed by every other model in the range (aside from the Escalade), and adopt an alpha-numeric title. So, rather than the expected title of LTS, Cadillac's top-end car will be called the CT6.
Of course, this won't be limited to just one model. According to Cadillac's press release, "familiar lettering like 'CT' would be used for car models, with the number indicating the relative size and position of the cars in the hierarchy of Cadillac models." And yes, that means what you think it means - Cadillac will use the exact same naming formula, albeit with different letters, as Infiniti.