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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's Palmer announces QX30 small crossover production

The name of the game these days in the luxury marketplace is premium compacts. BMW has the 1 Series and 2 Series, Mercedes the A-Class, B-Class, CLA and GLA, Audi has the A1 and A3, even Lexus has the CT 200h. Among the last to get in on the action is Infiniti, but that's all about to change.
Nissan's luxury brand has been working towards a premium compact for some time, revealing the Q30 concept at the Frankfurt Motor Show last year and signing a new deal with Daimler to help develop and produce it. Now it seems that both it and a crossover version have been approved for production.
The news comes from Andy Palmer, Nissan's UK-based COO, chairman of Infiniti and one of the company's top executives under CEO Carlos Ghosn. Late last week Palmer tweeted the following:

Infiniti Q30 goes full monty before Frankfurt

Infiniti is finally tearing off the camouflage and showing the world what the Q30 luxury hatchback actually looks like. Set to make a full debut Frankfurt Motor Show on September 15, the five-door marks the entry of the Japanese premium brand into the compact hatch ranks. The company's designers did a fantastic job of bringing the major elements from 2013's concept to the street, though. Like the earlier design, the production Q30 wears Infiniti's rounded rectangle grille and a chrome strip along the edge of the hood. The headlights are also left squinting from the concept. The only major change to the front end is an adjustment to the lower air dam to make it a little more realistic for production. Sadly, Infiniti is only providing this single front three-quarters perspective on the upcoming five-door for now, but check out the C-pillar in the background to spot the similarly pointed design there, as well. The changes are actually more noticeable when comparing the Q30 with its platform-mate, the QX30 compact crossover concept. The hatchback noticeably softens many of the CUVs swoopy lines to be a bit more mainstream. This is especially true along the front where the big air intakes from the QX are made significantly smaller. Production of the Q30 is slated to start in Sunderland, England, by the end of the year. They should actually arrive in showrooms there before the calendar runs out. Still, we're looking forward to Frankfurt for a more complete view of Infiniti's little luxury hatchback. Related Video: INFINITI Q30 PREMIUM ACTIVE COMPACT SET FOR FRANKFURT IAA 2015 PREMIERE Daring, expressive design meets advanced ride and handling performance Category-breaking Q30 faithful to 2013 concept car World premiere for global media September 15th at Frankfurt Motor Show Hong Kong – The first ever Infiniti Q30 Premium Active Compact is ready for its world premiere at the International Frankfurt Motor Show in September this year. Featuring Infiniti's iconic design language, the all-new Q30 represents a category-breaking vehicle concept developed for customers seeking urban individuality. Its dynamic drive characteristics provide for Infiniti-typical confident and responsive performance as well as excellent ride and handling. Crafted trims and expressive interiors extend the striking design approach from the exterior into the passenger cabin.