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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.

Infiniti teases November debut of new QX55 crossover-coupe

Infiniti will officially unveil its new QX55 crossover-coupe via social media on Nov. 11, Nissan's luxury subsidiary announced early Wednesday. Infiniti is calling it a return to the segment which the company helped pioneer when it launched the FX crossover back in 2002.  "With a roofline and visual elements inspired by the iconic Infiniti FX, the QX55’s provocative design will fuse the stance and versatility of a premium midsize crossover with the sleek profile of a sports coupe," Infiniti's announcement said. "Beyond its provocative looks, the QX55 will also feature innovative technologies designed to empower, engage and connect luxury customers to the road ahead." The announcement was accompanied by the above teaser image, which depicts the QX55's tapered liftgate. It's quite a bit more conservative than the previously released design sketch suggested, but certainly looks the part.  The QX55 is one of five new vehicles Infiniti plans to launch in the next three years. It was first teased last August during Monterey Car Week. While Infiniti has been leaning heavily on the heritage of the original FX (which later became the QX70) since releasing that first design sketch, the QX55 will actually have little in common with its spiritual ancestor. While they may share fastback SUV looks, the QX55 will be based on the QX50 — a modern, front-wheel-drive crossover with small, efficient engines. The FX was derived from Infiniti's sport sedans and coupes, and even boasted a V8 option for much of its existence. Production of the new crossover-coupe was slated to begin in June, but was reportedly pushed back due to complications at its production facility in Aguascalientes, Mexico. The facility is a joint-venture project between Mercedes-Benz parent company Daimler and Nissan, and produces several other front- and all-wheel-drive vehicles for both companies.  Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.    

Infiniti boss De Nysschen confirms next-gen Q60 Coupe, ponders high-performance variants

We've known since mid-December that Infiniti's new global model naming convention would turn the current-generation G37 Coupe into the Q60 Coupe starting next year, but we haven't been clear on whether the model-range-formerly-known-as-G would get a successor, especially as its volume has traditionally been a lot lower than its sedan counterpart.
Thankfully, Infiniti president Johann De Nysschen (above) has stepped up to confirm that the newly revealed Q50 sedan will receive a two-door counterpart, though perhaps not as quickly as some would like. According to an interview with Australia's CarAdvice.com, De Nysschen says "the coupe we can probably expect two-and-a-half to three years down the road." That news also suggests that if there's an eventual convertible version, that it's a long way off, too. Why so long? Infiniti has "a lot of priorities" - priorities that undoubtedly include an already-confirmed front-wheel-drive small hatchback/crossover.
The report also indicates that Infiniti has some aspirations for stretching its new Q50/Q60 range in a higher-performance direction to take on competitors like BMW and Audi, the latter being De Nysschen's former employer. There's far from a firm timetable offered, of course, with De Nysschen saying "someday in the future we will be able to offer more high performance versions [of Q50] than we have today... the dynamic capabilities of this platform are very significant. It can handle far higher power than the engines we are using at launch."