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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.

Race Recap: 2015 Hungarian Grand Prix is Magyar for 'What a race!'

Every driver on the Formula 1 grid dreams of taking home the silverware, but only one driver each year can do it. Barring disaster in 2015 it looks like it's going to be Lewis Hamilton. The Brit has been so dominating at the front of the grid on Saturday, we can't see how he'll miss out on winning the second annual FIA Pole Position Trophy. That's the accolade introduced last season in another manufactured attempt to give drivers something to work for on Saturday, since the FIA felt leading into the first corner didn't have the pull it used to. Hamilton took his ninth pole of the season in Hungary for Mercedes-AMG Petronas with a crushing lap that put him almost six tenths ahead of his teammate Nico Rosberg in second. All Hamilton needs is one more spot at the top of the grid this season, and he's the Pole Position trophy winner. Thrilling stuff. Behind Rosberg the gaps stayed smaller, Sebastian Vettel in the Ferrari a little more than a tenth behind Rosberg, Daniel Ricciardo in the Infiniti Red Bull Racing less than four one-hundredths behind Vettel. We feel almost as vexed watching Kimi Raikkonen as he feels driving – he's finally got a good Ferrari, now he can't get a good weekend. The front wing broke on his car in Free Practice 1, then a water leak in Free Practice 3 robbed him of setup time on the soft tire. He lines up in fifth about two tenths behind Ricciardo. The slow, tight Hungaroring didn't agree with the Williams chassis, Valtteri Bottas the first of the Grove team drivers in sixth, his teammate Felipe Massa two places back. Between them is Daniil Kvyat in the second Red Bull in seventh. Teenager Max Verstappen put in a good showing in the Toro Rosso to grab ninth, while Romain Grosjean in a wriggling, squishy, sliding Lotus classified his appearance in Q3 at all as "a miracle." As for the race that followed, we don't expect to see another like it for a long time – it was the real thrilling stuff, one shock after another. The drama began after the first parade lap, when Felipe Massa lined up out of position and the start was aborted. The drivers did another parade lap, then lined up with everyone in place. Mercedes got swamped as soon as the lights went out. Vettel ran around both of them and led the race into the first turn, Raikkonen had come from fifth to third by Turn 1, then got the inside line on Rosberg through Turn 2 to take second place.

US-built Infiniti Q50 engines to go into Euro-only cars

Back in March, Infiniti announced that it would be adding a 2.0-liter, turbocharged four-cylinder to its Q50 line for European and Chinese buyers. Now, we know where that engine will be built.
Nissan's Decherd, TN facility will receive the $319-million investment, which will see a separate, dedicated line for the Infiniti engines. According to Automotive News, this is more than a line running alongside the Nissan operations - the Infiniti facility will sport its own unique architecture and interior lighting, in a bid to distinguish the premium line from its mass-market parent company.
The logistics of all this do seem, on the surface, quite screwy. Building a new engine on one continent for a car built on another that will eventually go on sale on a third doesn't seem too bright, although there is a catch here. The new engine will also find its way into the Mercedes-Benz C-Class, which will kick off production in Vance, AL later this year.