2012 Infiniti M37 on 2040-cars

Auto blog

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 shows off the new Q50 engine lineup in Chicago

Infiniti has a raft of engine options it's rolling out on the Q50 sedan. We found out about most of them a couple of months ago, but they're now confirmed in all their turbocharged glory. And they'll all be showcased this week at the Chicago Auto Show. The base engine is a 2.0-liter turbo four based on a Mercedes design and built at the new joint-venture engine plant in Tennessee. The engine produces 208 horsepower and 258 pound-feet of torque and will be available in the Q50 2.0t in either rear- or all-wheel drive. If those specs strike you as familiar, they're the same that you'd find in the Mercedes CLA250 and GLA250, both of which similarly make their 4Matic traction optional, but come standard in front- (not rear-) drive form. Above the four-pot sits a new 3.0-liter twin-turbo V6 that replaces the naturally aspirated 3.7-liter unit and will be available in two states of tune. The 3.0t model offers 300 hp and 295 lb-ft, but the performance model – dubbed Q50 Red Sport 400 – cranks it up to 400 hp and 350 lb-ft. Both versions come mated to a seven-speed automatic transmission and either rear- or all-wheel drive. The fourth powertrain options carries over in the form of the Q50 Hybrid, which still pairs a naturally aspirated 3.5-liter V6 to a 50-kW electric motor for a combined output of 360 hp. So if you like your sports sedan to come with some manner of assist, the Q50 offers plenty of choices. But if you're in the atmospheric camp, we're afraid you'll have to look elsewhere. Related Video: Infiniti Presents Three New Q50 Sports Sedan Engines for the First Time at the 2016 Chicago Auto Show - Q50 Red Sport 400 offers new 400-horsepower VR-series 3.0-liter V6 twin turbo engine - Advanced 300-horsepower VR V6 twin-turbo version shown for the first time in Chicago - Pair of new V6 twin turbo engines joined by new 2.0-liter turbo inline-4 rated at 208 horsepower CHICAGO (Feb. 11, 2016) – Infiniti today revealed the full lineup of new advanced engines for its Infiniti Q50 sports sedan at the 2016 Chicago Auto, including two 3.0-liter V6 twin turbo engines and a 2.0-liter 4-cylinder turbo engine. The trifecta of new powerplants will be available beginning this spring. Joining the three new engine-equipped Q50 models – designated the Q50 2.0t, Q50 3.0t and Q50 Red Sport 400 – on display at the country's oldest and best-attended auto show are the redesigned 2016 QX60 crossover and the all-new QX30 premium active crossover.

Infiniti electric crossover will mark a milestone at Detroit Auto Show

In November, it was announced that both Nissan and Infiniti will display EV concepts at the 2019 North American International Auto Show in Detroit, taking place in January. Previously, it wasn't made clear what kind of vehicles they would be, but Infiniti stated today that its Detroit concept will be an electric crossover. Both the Nissan and Infiniti concepts will continue the design direction shown by Infiniti's Q Inspiration concept, and later next year, there will be stylistically similar cars shown at the Tokyo Motor Show in October. The luxury brand has released the above teaser photo of the crossover, depicting sharp headlights and a lit grille outline surrounding the badging. We can also see large wheels and tires and sizeable, defined wheel arches. Future Infinitis will be electrified from 2021 on, featuring either serial hybrid tech or full electric drivetrains. Serial hybrid refers to using Nissan's e-power technology, which relies on range extender engines instead of a large combustion engine (such as Infiniti's lauded VC-Turbo). The Detroit Auto Show is also a significant event for Infiniti, as the brand and its first car, the grille-less Q45 luxury sedan, was first displayed 30 years ago at the 1989 NAIAS. "Thirty years ago, as a 24-year-old designer in the audience, I saw the birth of Infiniti in person and am proud to be part of the journey of creating iconic luxury automobiles," said Nissan's senior vice president for global design, Alfonso Albaisa. Meanwhile, Infiniti's November 2018 sales were the best November numbers in the brand's history. "The concept car we will show in Detroit is the beginning of a new era for Infiniti, and an illustration of where we want to go with the brand," said Karim Habib, Infiniti's design director. Earlier, Albaisa echoed his statements, telling us how electrification can inspire the brand's future design thanks to the battery packs' size development, saying: "It's getting denser, it's getting thinner, the cars are able to get a little bit bigger, more space, we can really do much more." Related Video: