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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.

2015 Infiniti QX80 gets a minor refresh, fancy new trim

Infiniti revealed an ever-so-slightly refreshed QX80 alongside its Q70 luxury sedan this morning in New York. The biggest news for the brand's fullsize SUV is the addition of a range-topping trim level, unimaginatively dubbed the QX80 Limited.
The Big 80 sports a couple of styling tweaks in an effort to bring its appearance more in line with the brand's current design language. The "double-arch" grille with mesh inserts we first viewed on the Q50 now adorns the front fascia, and the head and taillights have gone full-LED. Still, it's hard to call this SUV anything but ugly. It's bulbous and almost brutish, which aren't generally words you want to have to use when talking about any kind of luxury vehicle.
There aren't many updates inside or to the drivetrain, either. Like the Q70, Infiniti has added a couple of new tech features, such as its Predictive Forward Collision Warning system and High Beam Assist. Although it's getting a bit long in the tooth, the interior remains nice, with lots of wood and leather all around. The SUV continues to use a 5.6-liter V8, which produces 400 horsepower and 413 pound-feet of torque, mated to a seven-speed automatic transmission.

Infiniti Q60 Project Black S packs F1-derived hybrid twin-turbo V6

At the 2017 Geneva Motor Show, Infiniti unveiled the Project Black S, a souped-up version of the Q60 coupe that packed technology derived from the Renault Sport Formula 1 Team's race cars. Details were scarce. Aside from some F1-inspired bodywork, all we knew was that the twin-turbo V6 would be paired with a kinetic energy recovery system, or KERS for short. At next week's Paris Motor Show, Infiniti is bringing a new concept that's a bit more polished as well as some additional details about what rests under the hood. The car is still dubbed the Infiniti Project Black S. The car still packs a twin-turbocharged 3.0-liter V6 paired with an energy recovery system. Infiniti claims the car makes 563 horsepower, up from 400 in the Q60 Red Sport 400. The Project Black S should hit 60 mph in fewer than four seconds. The powertrain uses three motor generator units (MGU) and a single MGU-K that harvests brake energy. Two electric turbochargers harvest heat energy from the exhaust, meaning the car can gain energy both under braking and acceleration. Visually, there's not much that's changed from last year's Geneva concept. We only have one new photo, but to our eyes the only difference is a few yellow accents on the front bumper. We'll have to wait until next week's reveal for more photos. Related Video: