2019 Infiniti QX50 arrives with new VC-Turbo engine, new platform and Nissan’s ProPilot assist system

Article by Christian A., on November 25, 2017

Infiniti said it will be unveiling its most advanced and most compelling vehicle so far at the upcoming 2017 Los Angeles Auto Show. While the premium carmaker didn’t say that this will be the final production version of its 2019 Infiniti QX50, there has been belief and it is highly likely that this reveal pertains to this particular mid-size sports utility vehicle.

Even before Infiniti reveals the 2019 QX50 – if it would really be the QX50 – the premium carmaker has already leaked a number of details about the next-generation of its mid-size SUV. Most of these details were made known through the Infiniti QX50 Concept that was unveiled at the 2017 Detroit Auto Show earlier this year.

As Infiniti revealed, the new 2019 QX50 will be powered by the VC-Turbo engine, which is the first production-ready variable compassion ratio unit. VC-Turbo technology amazingly combines the power of a high-performance 2.0-liter turbo gasoline engine with the torque levels and efficiency of a diesel mill. Already production-ready, the 2.0-liter VC-Turbo engine offers an alternative to diesel mill, as it could adapt its compression ratio to driving conditions; thereby deliver optimized levels of performance and efficiency. Depending on driving conditions, the engine’s compression ratio could be between 8:1 (for high performance) and 14:1 (for high efficiency).

In the new QX50 application, this VC-Turbo engine is tuned to deliver 268 hp (200 kW / 272 PS) of max output and 280 lb.-ft. (390 Nm) of peak torque, which is comparable to some six-cylinder gasoline powertrains. At this power level, the new Infiniti QX50 could sprint from zero to 60 mph (96.5 km/h) in just 6.3 seconds – when configured with all wheel drive system -- and attain a top speed of 143 mph (230 km/h).

In terms of efficiency, the new VC-Turbo engine is estimated to return 27 mpg (combined) when complemented by a front-wheel-drive system as well as 26 mpg (combined) in all-wheel drive. Compared to previous V6 engines, the new QX50 is around 35 percent more fuel efficient. Power is sent to the front or all wheels through a continuously variable transmission.

The 2019 QX50 is underpinned by a new architecture that is around 23 percent more rigid than the platform underpinning the outgoing model. This new platform allows the QX50 to measure around 4,693 mm (184.8 inches) in length and 1,679 mm (66.1 inches) in height. While the previous model comes with 31.6 cubic feet of cargo volume, the new 2019 QX50 offers 37 cubic feet of cargo space. When the rear seats are folded flat, this cargo volume surges to 60 cubic feet.

Just like the 2018 Nissan Rogue, the new 2019 Infiniti QX50 will be available with Nissan’s ProPilot assist, a semi-autonomous driving technology. With a press of a button, this innovative driving system assists in several vehicle functions like acceleration, braking, and steering input.

Press Release

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

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."
Christian Meunier, INFINITI Global Division Vice President

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.

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

Source: Infiniti

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