New Infiniti QX50 revealed: First details of world-first petrol engine tech

[supra93]

Official image from Infiniti shows the QX50 SUV in the metal, ahead of full launch in LA next week

Infiniti has released the first official image of its new QX50 SUV ahead of the global launch at next week’s LA Motor Show. The Audi Q5 rival features the world’s first production-ready variable compression ratio petrol engine, and should arrive in the UK late 2018.

Although there is only one image, it’s clear to see that the production QX50 sticks close to the original QX50 concept car in terms of design. It features Infiniti’s family face with a chrome-surround rectangular grille, enlarged badge and stretched back headlamps, while the pronounced lines take influence from the smaller QX30. The new body shape is six per cent more aerodynamically efficient than the old model, according to Infiniti.

At 4.69m long, 1.9m wide and 1.68m tall it’s similar in size to a BMW X3, and Infiniti claims the elevated driving position maximises visibility. We’ve yet to see the interior, but Nissan’s luxury division says it features an “artistic application of high quality materials and advanced craftsmanship”.

Sector-leading levels of space are also touted, with a sliding rear bench to increase legroom or boot space. While we need to wait for European-spec boot capacity data, Infiniti reckons it’ll swallow up three golf bags and still leave space for more stuff.

The QX50 sits on an all-new front-wheel drive platform, and uses super high-tensile steel to improve rigidity over the old model by 23 per cent. But the biggest news it what’s under the bonnet, with new 2.0-litre turbo petrol engine that promises the torque and efficiency of a diesel.

The four-cylinder unit, called VC-Turbo, can adjust its compression ratio continuously between 8:1 (boosting performance) and 14:1 (increasing efficiency) depending on driving style. It produces 268bhp and 380Nm of torque, and Infiniti claims it is 35 per cent more efficient than the V6 in the old QX50. It’s mated exclusively to a CVT transmission in this car.

Front-wheel drive versions are capable of 0-62mph in a claimed 6.7 seconds, while the fitment of all-wheel drive sees that sprint reduced to 6.3 seconds. The top speed on both is 143mph. Infiniti hasn’t revealed homologation data for fuel economy and emissions, however.

Infiniti has also revealed that the QX50 will use Nissan’s ProPILOT semi-autonomous driving technology. It’s capable of controlling acceleration, braking and steering in single-lane carriageway driving for now, but could be further updated to offer extra functionality in future.

We’ll find out further information about Infiniti’s latest SUV when our reporters head out to the LA show next week.

http://www.autoexpress.co.uk/infini...rst-details-of-world-first-petrol-engine-tech

 

[Carmaker1]

Although there is only one image, it’s clear to see that the production QX50 sticks close to the original QX50 concept car in terms of design.

:triumph: There is nothing more that gets on my nerves, than journalistic incompetence.

I expect from anyone writing in an automotive-related capacity, to know how cars are planned, developed, marketed, and manufactured. I am so tired of reading the fallacious drivel, from what counts for "news" in automotive media.

It is so silly to see that they are ready to claim, without even thinking for 1 minute, that Infiniti managed to keep the production QX50 like the "concepts", because they somehow designed it more after showcasing the 2016 and 2017 concepts.

Why does that have any relevance in first place to even mention? The article was just great without that opinionated, inaccurate guess on the timeline. This type of writing is an annoying pattern.

Sure, Infiniti trotted out a few dolled up showier versions of their secretly kept future P71A, without overdoing the design differences?

If they cannot get the facts right on that, then please don't bother mentioning a comparison between the concepts and production model.

That only works whenever Toyota shows the next Supra and compare it to the FT-1 Concept. Just like the LF-LC and LC 500. They had enough to show them and get feedback on how to finalize them.

It is marketing 101, to craft a narrative that simplifies the vehicle development process to consumers and the press. Journalists are taking the bait way too easily and throwing stuff at the wall, to see what sticks.

Actually, Infiniti finished designing this 3.5 years ago, yet the writer of this article wants their readers to believe otherwise. I have said this many times, for nearly 3 years.

This car is way behind and could've been better, save for VC-T. If MB can do RWD with the GLC, why couldn't Infiniti do the same? I digress.

I am only so infuriated by this pattern of poor journalism, as I do not appreciate being misled by journalists who are supposed to inform me and not make me ignorant or confused.

More than anything, other people read gaffes like that and regurgitate it as factual or a rule of thumb, into comment sections, forums, user-made media, or casual discussion.

 

[supra93]

PRESS RELEASE: INFINITI QX50: A luxury crossover with world-first technologies and an all-new platform

• VC-Turbo: The world's first production-ready variable compression ratio engine
• All-new platform provides unrivaled refinement, rigidity and interior space
• ProPILOT Assist: Intuitive technologies support the driver
• Distinctive proportions, with INFINITI's signature Powerful Elegance design
• NASHVILLE, Tenn. – The new 2019 QX50 is the most compelling INFINITI to date. Based on an entirely new platform, the new QX50 is a mid-size crossover with world-first technologies, standout design and unrivaled interior space.

"The 2019 QX50 is the most important vehicle we have ever launched, and it embodies everything the brand stands for: beautiful design, advanced technology and empowering performance. As a luxury, mid-size crossover, it's the right vehicle at the right time in one of the world's fastest growing segments."

VC-Turbo – the world's first production-ready variable compression ratio engine
The VC-Turbo engine is the world's first production-ready variable compression ratio engine, transforming on demand. A breakthrough in combustion engine design, the 2.0-liter VC-Turbo engine adjusts its compression ratio to optimize power and efficiency. It combines the power of a 2.0-liter turbocharged gasoline engine with the torque and efficiency of a four-cylinder diesel engine. A compelling alternative to diesel, it challenges the notion that only hybrid and diesel powertrains can deliver high torque and efficiency.

"Variable compression ratio technology represents a breakthrough in powertrain development. The QX50, powered by our VC-Turbo, is the first production vehicle ever to give drivers an engine that transforms on demand, setting a new benchmark for powertrain capability and refinement.
Randy Parker, Vice President, INFINITI Americas

A multi-link system continuously raises or lowers the pistons' reach to transform the compression ratio. High compression ratios aid efficiency, while low ratios enable greater power and torque. The VC-Turbo offers any compression ratio between 8:1 (for performance) and 14:1 (for efficiency), maximizing driver control.

The engine delivers 268 hp (200 kW) and 280 lb ft (380 Nm), an expected best-in-class combination of four-cylinder power and torque. The 2019 QX50 is expected to deliver fuel economy of 27 mpg (U.S. combined, front-wheel drive; 26 mpg all-wheel drive). Front-wheel-drive models offer a 35% improvement in fuel efficiency over the previous V6 gasoline QX50; all-wheel-drive models offer a 30% improvement.

The engine is paired with a continuously variable transmission (CVT), for seamless power delivery. Its infinite number of ratios perfectly matches the engine's ability to transform.

All-new platform with predictive, predictable ride and handling
The 2019 QX50 is built on an all-new platform, featuring a front-engine, front-wheel-drive-based layout. Engineered with flexibility of application in mind, the new platform sets new standards for refinement, rigidity and interior space in the compact luxury crossover segment.

"The crossover market is the number one premium segment globally. The new QX50 is INFINITI's core model and offers premium buyers everything they could want from a vehicle of this type, thanks in part to the development of an all-new platform that is an ideal combination of roominess and packaging efficiency."
François Bancon, Vice President, Product and Programs

The platform's layout allows for higher levels of packaging efficiency than before, resulting in the new QX50's ideal interior proportions for passengers and cargo.

The 2019 QX50 represents the first automotive use of SHF (Super High Formability) 980 MPa high-tensile steel, further strengthening the all-new platform. The high-tensile material can be molded into unprecedented shapes, saving weight and representing a torsional rigidity improvement of 23% over the current QX50.

New ProPILOT Assist technologies support single-lane highway driving
INFINITI's customers have stated their desire to remain a key element in the driving equation, so the brand's vision for driver-assistance technologies is a step removed from the notion of fully autonomous "driverless" motoring embraced by some carmakers.

"INFINITI's ProPILOT Assist technologies offer support when needed and add to the enjoyment and confidence of the driver. Our intention is to empower the driver and enhance feelings of pleasure behind the wheel, not to remove the driver from the equation. The brand new QX50 will set a new benchmark in the biggest premium segment."
François Bancon, Vice President, Product and Programs

In the 2019 QX50, ProPILOT Assist technologies help the driver control acceleration, braking and steering during single-lane highway driving, placing them in total control. ProPILOT Assist is designed to add to driving enjoyment and confidence, and is available at the push of a button.

Powerful exterior design, handcrafted interior
Remaining true to the design of the QX50 Concept and QX Sport Inspiration, the QX50's aerodynamic exterior reinterprets INFINITI's distinctive Powerful Elegance design language and signature design cues for the mid-size crossover segment. It combines a confident stance with intelligent packaging, while deep character lines highlight the influence of human artistry in the design process.

The new QX50 stands out on the road. Its elevated driver position maximizes visibility, for a clear view while driving and parking. Aerodynamic efficiency is key to the new QX50's design – the drag coefficient is reduced significantly compared to the previous QX50. Its hood, bumpers, A-pillars, tailgate and enclosed underbody are all specially designed to encourage airflow over, around and under the vehicle, with minimal turbulence.

The unrivaled interior space, artistic application of high quality materials, and advanced craftsmanship make the cabin as welcoming and comfortable as it is flexible. Driver-centric, yet passenger-minded, the 2019 QX50 offers a package of technologies to enhance the driving experience. Its asymmetric layout and calm, connected ambience is designed to meet different needs of the driver and passengers.

The cabin boasts extraordinary space, with a sliding rear bench enhancing cabin and cargo flexibility and creating rear legroom that is expected to be best in class. The trunk's volume expands from 31.6 cu ft (895 liters SAE) to 37 cu ft (1,048 liters SAE) as the rear bench slides fore and aft, growing to 60 cu ft (1,699 liters SAE) with the rear seats folded. With all seats in place, the QX50 accommodates three golf bags, or a stroller stored lengthways, with space for additional cargo. Under-floor storage areas allow owners to stow other items out of sight.

Technical specifications

Body and chassis
Five-door, five-seater crossover, with all-steel unitary construction bodyshell. Four-cylinder variable compression ratio turbocharged engine driving the front or all wheels via a continuously variable transmission.

Engine
2.0-liter VC-Turbo gasoline
Type Turbocharged four-cylinder in-line with variable compression ratio
Displacement: (cc) 1,997 (8:1 CR) ~ 1,970 (14:1)
Bore and stroke: 84.0 x 90.1 mm (8:1 CR) ~ 84.0 x 88.9 mm (14:1 CR)
Compression ratio: 8:1 ~ 14:1 (variable)
Max power: 268 hp (200 kW) @ 5,600 rpm
Max torque: 280 lb ft (380 Nm) @ 4,400 rpm
Valves: 16
Fuel system: Direct injection and multi-port (variable)
Transmission: XTRONIC continuously variable transmission with manual shift mode
Performance: 0-to-60 mph 6.3 secs (AWD) / 6.7 secs (FWD)
Top speed: (mph): 143 (230 kph)

Dimensions (in / mm)
Overall length: 184.8 / 4,693
Overall height: 66.1 / 1,679
Overall width: 74.9 / 1,903
Wheelbase: 110.2 / 2,800
Ground clearance: 8.6 / 218
*excluding door mirrors

Fuel economy (US mpg)
FWD, combined: 27
AWD, combined: 26

http://infinitinews.com/en-US/infin...ld-first-technologies-and-an-all-new-platform

 

[Gecko]

I'm so disappointed...FWD with CVT?

I guess it's sharing more with the next generation Rogue than the Q50, which is very sad. So much for Infiniti's sporting credentials, as that was one thing that myself and many others were hoping for with this new QX50. I'm sure this method will be a lot more profitable, but it's sad to see how this is shaking out. If you want a "compact" premium CUV with RWD, BMW and Mercedes are your only options now (Macan is more expensive).

The design is predictable, but handsome, IMO.

 

[Tragic Bronson]

 

[ssun30]

VC-T has a thermal efficiency of 40%. That's the highest for a turbo engine yet. And 14:1 maximum CR on a turbo engine is super impressive. While not as high as the 40.5% Dynamic Force, it does offer 100 kW/L compared to 60. The V35A-FTS has 88 kW/L with undisclosed thermal efficiency, but I suspect it to be lower than 40% otherwise Lexus will be bragging about it.

Overall Nissan offers a package that is slightly superior to SkyActiv/Dynamic Force, but does so in a more complicated manner to have that level of specific output. Mazda set the golden standard first, then Toyota got in before being dethroned by Nissan. And in another two years SkyActiv-X will set the new standard again. It's interesting to see this three-way arms race in ICE technology when everyone else is obsessed with electrification.

Another interesting feature is how the multi-link improves NVH by about 100%, and Nissan claims the turbo-4 can compare to a V6 in smoothness. Yet in their presentation a V6 still has less than half the vibration of VC-T. This is quite frustrating: the whole industry wants to ditch V6s for turbo-4s, these save costs and are (marginally) more efficient. Unfortunately we as buyers now have to deal with reduced comfort. We already got a downgrade when the industry moved from I6 to V6 (which is not that bad), and now it's getting (way) worse. We have BMWs with an Inline-3 that wants to shake itself apart.

Everyone says their turbo-4 can replace the V6 in premium applications, but so far I'm not convinced. No turbo-4 I've driven come even close to the 2GR-FE V6 in my ES350 when it comes to NVH.

Finally, it's a shame such a potent power unit is mated to an uninspiring CVT, on an uninspiring car.

 

[Gecko]

Nevermind... not so impressed with the final production car. It looks like a big QX30 instead of something altogether different and special.

 

[mikeavelli]

I liked it then scrolled down to the real life pics. The engine tech is very very impressive, a true worlds first. ANOTHER CVT... wow. Of course advertising will likely show the car driving on the nurburgring.

This will help sales but not image.