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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.

Infiniti QX70 S Design goes dark in the City of Light

As Infiniti continues its attempts at making inroads in the European market, it's showing off a sharper-looking version of its QX70 crossover. Much as it does in the US market, the CUV, formerly known as the FX, is adding an S Design trim.
The new trim pack adds plenty of dark chrome to the exterior of the fashion-forward QX70, with the stuff finding its way onto the grille, foglight surrounds and side grilles. While not dark chrome, the 21-inch alloys, mirror caps and roof rails are now painted black, while the headlights are smoked. Black lacquer trim, black leather and purple stitching stand out in the S Design's cabin.
Hop up top for our full gallery of live photos of Europe's new, dark-chrome-adorned QX70, and then head below for the original press release, issued by Infiniti earlier this month.

Autoblog Podcast #391

Episode #391 of the Autoblog Podcast is here, and this week, Dan Roth, Mike Harley and Brandon Turkus talk about the appointment of Kumar Galhotra to run Lincoln, changes coming for Scion, the Dodge Charger SRT Hellcat, and which cars won't live into 2015. We also take a quick detour to talk about the Infiniti Q50 Eau Rouge prototype, which Mike Harley just came back from driving. We start with what's in the garage and finish up with some of your questions, and for those of you who hung with us live on our UStream channel, thanks for taking the time. Check out the new rundown below with times for topics, and you can follow along down below with our Q&A. Thanks for listening! Autoblog Podcast #391: Topics: 2015 Infiniti Q50 Eau Rouge Prototype New boss at Lincoln Scion xB, iQ ending soon Dodge Charger SRT Hellcat Cars that won't live to 2015 In the Autoblog Garage: McLaren 650S Hyundai Genesis Hosts: Dan Roth, Michael Harley, Brandon Turkus Runtime: 01:42:06 Rundown: Intro and Garage - 00:00 Infiniti Q50 Eau Rouge - 30:05 Kumar Galhotra to Lincoln - 34:32 Scion Changes - 43:58 Dodge Charger Hellcat - 54:25 Discontinued Cars - 01:06:24 Q&A - 01:22:59 Get the podcast: [UStream] Listen live on Mondays at 10 PM Eastern at UStream [iTunes] Subscribe to the Autoblog Podcast in iTunes [RSS] Add the Autoblog Podcast feed to your RSS aggregator [MP3] Download the MP3 directly Feedback: Email: Podcast at Autoblog dot com Review the show in iTunes Hirings/Firings/Layoffs Podcasts Dodge Hyundai Infiniti Lincoln McLaren Scion Supercars mclaren 650s