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Infiniti's variable compression engine in the 2019 QX50 is the first of its kind

The world's first variable compression ratio engine is here, in a production car. That car is the 2019 Infiniti QX50, debuting this week at the Los Angeles Auto Show. The midsize crossover has seen a refresh that has brought it an all-new platform together with new driver assist features, but it's the engine that's the centerpiece here. Nearly everything is continuously variable under the hood of the QX50 – not only the new shift-by-wire XTRONIC CVT. The new VC-Turbo gasoline engine is able to change its compression ratio from 8:1 to 14:1, or anything in between depending of the driving situation; whether there is need for top-end power or turbodiesel-like torque from low revs, or optimized fuel economy. The pistons' reach is continuously adjusted by an electric "Harmonic Drive" motor, which controls a multi-link system, affecting the top-dead-center of the pistons and changing the compression. The engine can also switch between efficiency-maximizing Atkinson cycle and regular combustion cycle, on the go – and there's both multipoint injection and gasoline direct injection employed. The result is 268 horsepower at 5,600 rpm and 280 pound-feet of torque at 4,400 rpm; good figures for a 2.0-liter four-cylinder gasoline engine with a single-scroll turbocharger. Infiniti says that the FWD version's fuel economy of 27 miles per gallon combined is 35-percent better than the previous-generation V6 engine; in AWD guise, it reaches 26 mpg, which is a 30-percent improvement. The new engine is pretty much all-aluminum, but the vaguely magical-sounding "transformative multi-link components" behind the variable compression system are made from high-carbon steel alloy. The engine's multi-link system also enables it to do away with any balancing shafts, and Infiniti compares its smoothness to a V6 rather than a regular four-cylinder. In addition to the aforementioned tech, the VC-Turbo engine has the world's first active engine mount vibration damping system to smoothen its operation even further. Related Video:

2019 Infiniti QX50 starts fresh with a new face and trick engine

Last week, Infiniti rolled out the refresh of the big daddy QX80 in Dubai. At this year's Los Angeles Auto Show, the Japanese automaker is poised to reveal something that's bound to be far more mainstream: the 2019 Infiniti QX50 and its trick variable compression turbocharged engine, or VC-T. In addition to the new engine, the QX50 drops rear-wheel drive in favor of an all-new front-wheel-drive platform and gets the new ProPilot assist technology that debuted on the Nissan Leaf. The QX50 may be the headliner, but the engine is the really interesting bit. This 2.0-liter turbocharged inline-four can adjust the stroke of the pistons on the fly, varying the engine's compression from 8:1 to 14:1, and giving the new midsize crossover improved efficiency and diesel-like torque. It's rated at 268 horsepower and 280 pound-feet of torque, down 57 horses but up 14 pound-feet. Front-wheel-drive models hit 60 mph in 6.7 seconds. That drops to 6.2 seconds with all-wheel drive. Combined fuel economy is 27 mpg for front-wheel-drive QX50s and 26 mpg for all-wheel-drive variants, both up from the abysmal 20 mpg combined rating of the current model. Power is sent through a continuously variable transmission. If it's like other Nissan and Infiniti CVTs, it will be inoffensive if a bit lifeless. We've covered the details of this powertrain extensively already, but it's great to see companies giving more life to the internal combustion engine. The new platform marks a big improvement over the outgoing QX50 in terms of platform rigidity and space efficiency. Rear-wheel drive might be fun, but it's never ideal from a packaging perspective. Cargo capacity is up from 31.6 cubic-feet to 37 cubic-feet. With the seats down, the space expands to 60 cubic feet, up from 50.1 cubic feet. That's not exactly class-leading, but it's no longer among the class-worst. The 2019 QX50 will use a new type of high-tensile steel, improving torsional rigidity by 23 percent and shaving overall weight. The styling falls in line with most other Infiniti products. The outgoing model had a bit of an identity crisis, looking more like a lifted wagon than a fully-realized crossover (it was, after all, essentially a G35/G37 wagon). This new one has much more conventional SUV proportions. In fact, it looks like a 7/8-scale version of the new QX80 with a front-wheel-drive profile. That's either good news or bad news, depending on where your tastes fall.

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.

2018 Infiniti QX80 reveals fresh face in Dubai

Infiniti has finally revealed its refresh for the Infiniti QX80 at the Dubai auto show, and it's amazingly mild. Not that we were expecting a particularly wild redesign, since even the QX80 Monograph concept that previewed the SUV still looked similar to the existing vehicle, but this is still a pretty low-key update. The main changes are in the front fascia, which was teased not long ago. It features headlights that sit higher up and inline with the top of the grille. The lights are more slender and swept back, too. The tops of the fenders sit higher as well, providing a more squared-off look, and the side fender vents have a new design. Beyond the nose job, there are hardly any other changes. The taillights are new, and the chrome finish over the license plate extends into them. The rest of the roof, doors, windows, basically all the stuff in the middle of the SUV look pretty much identical to the old QX80. Underneath the skin is more of the same. The interior is the same with the exception of some new materials and colors. Apparently the shift knob is new, too. The powertrain is a carryover as well, featuring the same 400-horsepower 5.6-liter V8 with either two- or four-wheel drive. The QX80 has one other somewhat noteworthy change, and that's the price. Base price on the two- and four-wheel-drive QX80 models increases $900 over last year's to $65,745 and $68,845 respectively. The new QX80 goes on sale by the end of this year. Related Video: Featured Gallery 2018 Infiniti QX80 View 27 Photos Image Credit: Infiniti Infiniti SUV Luxury dubai motor show infiniti qx80

2018 Lincoln Navigator vs luxury SUV rivals: How it compares on paper

The all-new 2018 Lincoln Navigator is an impressive, luxury-lined beast. However, while its Black Label interior stood out most during our first drive of the new Navigator, it also seemed pretty clear that much of this full-size SUV was superior to the competition in a number of fundamental ways. Its Raptor-sourced 3.5-liter V6 had class-leading power for one, and its third-row seat seemed as spacious and comfortable as its rivals' are cramped and barely usable. To search for your next new vehicle, try Autoblog' s Car Finder. Yet, I wanted to take a closer look at how the Navigator fully compares on paper to its competitors - especially the Cadillac Escalade with which it most directly competes. The below spreadsheet should tell the whole story, but as you can see, there's an awful lot of class-leading green highlighter in the Navigator's column. The cargo volume and third-row legroom numbers are particularly telling, with the latter actually going up to 42.3 inches when you slide the second-row fully forward. Now, a few things to note about the above spreadsheet. The GLS-Class is also available as the GLS 550, which boasts a 4.7-liter V8 that just comes up short to the Navigator with 449 horsepower but has to deal with only 5,578 pounds. Its $94,950 price tag is comparable to the Navigator Black Label. Much of the LX 570's information is also applicable to the Toyota Land Cruiser, which, badge aside, could certainly be considered a member of this segment given its feature content and still-hefty price tag. It has better ground clearance and approach/departure angles than its Lexus sibling, along with an as-indicated lower price. Much of the Escalade's information also applies to the GMC Yukon Denali, while the Infiniti QX80 is applicable to the Nissan Armada. Related Video: Cadillac Infiniti Lexus Lincoln Mercedes-Benz SUV Luxury Off-Road Vehicles consumer lincoln navigator

Nissan tests fully autonomous ProPilot tech on Tokyo roads

We've been hearing a lot about Nissan's ProPilot technology lately. ProPilot Assist is coming to the U.S. in the Rogue, as well as the Leaf EV. For this generation, the system allows for Level 2 autonomous driving, which is essentially adaptive cruise control paired with a lane-keeping function. Later, Nissan will add ProPilot Park, which allows the car to park itself. The next generation of ProPilot, though, allows for Level 4 fully autonomous driving, even on urban streets, beginning in 2020. Nissan has announced that it has already tested it on public roads during a demonstration in Tokyo. The prototype test vehicle is an Infiniti Q50. It's fitted with 12 cameras, 12 sonar sensors, nine millimeter-wave radar sensors, six laser scanners and high-definition mapping, all run through artificial intelligence. With this combination of hardware and software, the Q50 prototype can navigate across town or on the highway, automating the entire driving duties from the moment the passenger selects a destination until their arrival. It can tackle busy intersections and respond to obstacles in the road, providing what Nissan claims is a "human-like driving feel that gives passengers peace of mind." View 29 Photos "Our next-generation ProPilot prototype showcases technology that will be available for real-world use from 2020," said Takao Asami, Nissan's senior VP of research and advanced engineering. "Today's demonstration is another example of our successful work toward creating an autonomous driving future for all." Autoblog has already had the chance to sample the current generation of ProPilot Assist, in both the Leaf and the Rogue. While there has been a little bit of disagreement in our office, most of us have found the technology to work fairly well, and are looking forward to trying the next generation of semi-autonomous and autonomous systems. As the tech advances, it will only get smoother and smarter. Related Video: News Source: Nissan Green Infiniti Nissan Technology Emerging Technologies Autonomous Vehicles Electric Videos Sedan nissan propilot propilot

Production Infiniti QX80 will be revealed at Dubai Motor Show

Back at the New York auto show, Infiniti showed the QX80 Monograph concept, which indicated what direction the updated production QX80 would go. At this year's Dubai auto show, we'll get to see how close the QX80 gets to the concept, since that's where the production car will debut. And thanks to some teaser images from Infiniti, we get a solid sneak peak at the SUV. Immediately apparent is that many key styling cues have made it to production, but the overall car has been notably toned down from the already relatively conservative concept. We're glad to see that the headlights have completed their trip up the front fascia, matching up better with the corporate trapezoidal grille and providing a wider, more aggressive look. The jutting, Leno-esque lower valence of the concept has been reduced to more modest proportions, but the basic shape of the lower grilles remains the same. It also appears that the fenders haven't been pumped up as much as the concept's. The mild redesign matches what will probably be very mild mechanical changes. Previous reports have said that the new QX80 will retain the same platform and powertrain as the current model. We wouldn't be surprised, though, if there have been some suspension tweaks and maybe a few extra horsepower squeezed from the current 400-horsepower 5.6-liter V8. Also, though Infiniti hasn't revealed when the SUV will go on sale, we would expect it to arrive at dealers early next year. Related Video: Featured Gallery 2019 Infiniti QX80 Image Credit: Infiniti Infiniti SUV Luxury Off-Road Vehicles dubai motor show infiniti qx80 infiniti qx80 monograph

At long last, Infiniti plans a production EV

After years of false starts, it appears that Nissan's Infiniti division will finally launch a production electric car in 2019 and debut it as a concept in January at the North American International Auto Show in Detroit. Details at this point are scant, but Infiniti Executive Design Director Alfonsa Albaisa told Autocar the EV would be an all-new electric-only vehicle based on a new platform. Citing the company's grand prix-inspired Prototype 9 racecar concept that was shown a few weeks ago at Pebble Beach, Albaisa said consumers would see "parts of the car in a different context" on the concept EV. The Prototype 9's all-electric powertrain was developed by parent company Nissan's Advanced Powertrain Department. The last we saw of any electric offering from Infiniti was way back in 2012 with the LE Concept sedan, which was supposed to show up in dealerships two years later. Those plans were initially postponed in 2013 and then again in 2015 amid doubts over EV sales projections and larger concerns over boosting overall Infiniti sales. The LE had a 24 kWh lithium-ion battery pack paired with a 100 kilowatt electric motor delivering 134 horsepower and 240 pound-feet of torque. Related Video: Featured Gallery Infiniti Prototype 9 at Pebble Beach View 26 Photos Related Gallery Infiniti LE Concept: New York 2012 Green Infiniti Concept Cars Electric Pebble Beach

Genesis G70 vs sport sedan rivals: How it compares on paper

We got our first look at the Genesis G70 sport sedan today. We think it looks good, with enough ties to its fellow Genesises (Geneses?) to further establish the brand and just enough distinction to help it stand out from the crowd. But ah yes, the crowd. Although Genesis didn't release the G70's full spec sheet, it revealed just enough for us to start sizing it up to its future competition. There are certainly others with which to compare (Lexus IS, Cadillac ATS, Alfa Romeo Giulia, Jaguar XE just to name a few), but we decided to take a look at the best sellers and most competitive luxury sport sedans. (And hey, if you like this, we can always do a follow up) So, here we have the Genesis G70 vs BMW 3 Series vs Audi A4 / S4 vs Mercedes-Benz C-Class vs Infiniti Q50. Nothing like a good chart to dig your teeth into on a Friday. Note that we only compared those models that line up with the G70. So, we left out the BMW 320i and Audi A4 Ultra entry level models as well as the Q50 3.0t mid-grade model that's considerably cheaper than the German performance upgrade models we listed. All 0-60 figures are rough estimates based on several sources, models/drivetrains and OEM figures. Related Video: Featured Gallery Genesis G70 vs other sport sedans View 15 Photos Audi BMW Genesis Infiniti Mercedes-Benz Luxury Sedan consumer infiniti q50 audi s4 genesis g70 mercedes-benz c-class bmw 330i bmw 340i

Infiniti Prototype 9 is a wonderfully beautiful EV grand prix car

Few automobiles are as elegantly beautiful as the open-wheel grand prix cars of the 1940s, '50s and '60s. The simple, slender shapes of these cars bear no extravagant flourishes or adornments. The purposeful design is what gave these cars their beauty, and it's these classic machines that inspired the new Infiniti Prototype 9. Teased earlier this week, this concept blends old and new, with classic lines hiding a modern all-electric powertrain. The Prototype 9 will make its full debut next week at the 2017 Pebble Beach Concours d'Elegance. Infiniti says the car was built around a simple idea: what would a 1940s Infiniti grand prix car look like? While the silver paint may be more German than Japanese, the design could easily be mistaken for an actual '40s grand prix car. Only the Infiniti-styled grille gives it away. Everything about it, from the thin bias-ply tires wrapped over center-locking wire wheels to the bulging screws around the driver's seat, is pitch perfect. Underneath that achingly long hood rests a prototype electric motor and battery from Nissan's Advanced Powertrain Department. The combo sends 148 horsepower and 236 pound-feet of torque straight to the rear wheels. That's good enough to send the svelte 1,962 lb car to 62 mph in just 5.5 seconds. Top speed is right at 106 mph. While speed may die off towards the top end, all that torque and a 43/57 front to rear weight distribution should make the Prototype 9 a riot on a small, tight circuit. There's only enough juice in the battery for about 20 minutes of flat-out racing. The handmade steel body rests on a steel ladder-frame chassis. The front suspension uses a leading-arm rigid axle with transverse leaf spring while the rear uses a De Dion axle, also with a transverse leaf spring. The Prototype 9 also uses old-school hydraulic rotary type dampers. There's no power steering and no brake booster for the four-wheel disc brakes. The car was designed and built by a number of different departments within Infiniti and Nissan. A simple sketch expanded as more and more designers and engineers wanted to have a hand in the project. The steel body panels were all shaped and hammered by hand. The bare cockpit is only adorned with a thin seat, three gauges, a few switches, a gear selector and the steering wheel. The gauges are set into a fixed aluminum hub in the center of the steering wheel.