2007 Infiniti Fx45 Base Sport Utility 4-door 4.5l Awd on 2040-cars

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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 Q Inspiration Concept shows a future with variable compression

For weeks, Infiniti has been teasing the Q Inspiration Concept ahead of its official debut at the Detroit Auto Show. Details were absent, but the design was clean, swoopy athletic. Not seeing any tailpipes on the rear end, we hoped it could sport some kind of electrified powertrain, but surmised that Infiniti could take the opportunity to further showcase its variable compression turbocharged engine technology. Now, Inifniti has officially taken the wraps off its Q Inspiration Concept, and has indeed chosen to use the stunning show car to demonstrate "near future applications" of the potent yet efficient VC-Turbo tech. VC-Turbo made its production debut in the 2019 QX50 at the 2017 Los Angeles Auto Show. Here, in the Q Inspiration, VC-Turbo allows Infiniti designers to make the most of the packaging, taking advantage of the compact powertrain to increase the size of the cabin while maintaining the footprint of a mid-size car. Electric automakers like Fisker, Lucid Motors and the like have been doing something similar with electric powertrains, but Infiniti's VC-Turbo allows the company to do something similar with technology that is ready for primetime, while still bridging the gap to more efficient future powertrains. VC-Turbo, as we've learned earlier, allows the engine to change and optimize compression ratios on the fly, between 8:1 for high-performance situations, to 14:1 for maximum efficiency. Mounted to the exhaust manifold integrated in the cylinder heads of the four-cylinder engine is a single-scroll turbocharger. The system, says Infiniti, provides the torque and response of a hybrid or turbodiesel powertrain without sacrificing efficiency. In the Q Inspiration, the power is directed to four wheels via a front-biased all-wheel-drive drivetrain. The system can direct torque to the rear wheels individually as needed. As a design study, the Q Inspiration is a success. The proportions and lines are sleek and attractive, accentuated by the car's white paint. There's kind of a lot going on up front, with a large "double-arch" grille at the leading edge. Everything behind that, though, looks particularly harmonious. Its elongated cabin and coupe-like dimensions help provide efficiency while maximizing headroom for the four occupants. It's a car that stands up to close inspection, as attention to detail makes it more interesting the closer you scrutinize it, inside and out.

2022 Infiniti QX60 First Drive Review | Wading back into deep waters

NAPA, California — Standing out in a field that includes the Audi Q7, Volvo XC90 and Acura MDX is no easy task. The trio nails driving dynamics, modern style and tech to a tee, putting all the more pressure on InfinitiÂ’s long-awaited revamp of its top-selling QX60. As a sophomore effort to an SUV that lasted well past its best-by date, the 2022 Infiniti QX60 undergoes a substantial overhaul to bring it up to snuff. Does it succeed? We scored seat time in all three rows for answers. Most visibly in this image-conscious segment, the QX60Â’s fully redesigned exterior is a less fussy, more serene look than the previous one, which debuted back in 2013 as the JX35. Gone are the deeply contoured body panels, whose pinched sheetmetal and curved character lines evoked a certain (and increasingly dated) moment in InfinitiÂ’s design language history. The new QX60 flattens many of those creases, bringing a smoother, more monolithic vibe to the table. According to Infiniti senior design director Taisuke Nakamura, the update embraces the concept of “Ma,” which describes a form of Japanese minimalism. WeÂ’re not sure if NakamuraÂ’s “kimono fold” headlights or “origami-inspired” dashboard are readily identifiable as such, but the redesign is nevertheless a handsome one. The 2022 QX60Â’s redux actually gives it a stylistic leg up on some competitors. The QX60 cabin has also been reworked to become a more livable space, starting with a de-cluttered dashboard that incorporates a fully digital instrument panel, an available 10.8-inch head-up display, and a standard 12.3-inch multimedia screen that replaces an 8-inch unit (the last QX60 never got Infiniti's bizarre double-screen tech interface). Standard tech includes wireless Apple CarPlay and Android Auto, six USB ports, a revamped Infiniti Intouch app that adds greater functionality, and the industryÂ’s first integration of remote starting via Alexa voice command. Up front, the interior comes across as sleeker and modernized, with a low-profile expanse of HVAC vents forming a sweep of horizontal lines across the dashboard. Though attractive, their functionality is somewhat hampered by the need to reach into the narrow slots in order to redirect the airflow up or down.  Some of the cabin's luxury touches are a bit heavy handed, like the Autograph trim level's diamond quilting on the dash whose stitches seem thick and indelicately executed.