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Infiniti's variable compression engine in the 2019 QX50 is the first of its kind

The world's first variable compression ratio engine is here, in a production car. That car is the 2019 Infiniti QX50, debuting this week at the Los Angeles Auto Show. The midsize crossover has seen a refresh that has brought it an all-new platform together with new driver assist features, but it's the engine that's the centerpiece here. Nearly everything is continuously variable under the hood of the QX50 – not only the new shift-by-wire XTRONIC CVT. The new VC-Turbo gasoline engine is able to change its compression ratio from 8:1 to 14:1, or anything in between depending of the driving situation; whether there is need for top-end power or turbodiesel-like torque from low revs, or optimized fuel economy. The pistons' reach is continuously adjusted by an electric "Harmonic Drive" motor, which controls a multi-link system, affecting the top-dead-center of the pistons and changing the compression. The engine can also switch between efficiency-maximizing Atkinson cycle and regular combustion cycle, on the go – and there's both multipoint injection and gasoline direct injection employed. The result is 268 horsepower at 5,600 rpm and 280 pound-feet of torque at 4,400 rpm; good figures for a 2.0-liter four-cylinder gasoline engine with a single-scroll turbocharger. Infiniti says that the FWD version's fuel economy of 27 miles per gallon combined is 35-percent better than the previous-generation V6 engine; in AWD guise, it reaches 26 mpg, which is a 30-percent improvement. The new engine is pretty much all-aluminum, but the vaguely magical-sounding "transformative multi-link components" behind the variable compression system are made from high-carbon steel alloy. The engine's multi-link system also enables it to do away with any balancing shafts, and Infiniti compares its smoothness to a V6 rather than a regular four-cylinder. In addition to the aforementioned tech, the VC-Turbo engine has the world's first active engine mount vibration damping system to smoothen its operation even further. Related Video:

Nissan could report first quarterly loss since March 2009

TOKYO — Nissan may report its first quarterly loss in more than a decade on Thursday because of slumping sales, sources familiar with the company said, adding more pressure on efforts to rebuild the company after Carlos Ghosn's ouster. Deteriorating profits underscore the challenges facing Nissan, which is unwinding many of the expansionist strategies championed by ex-Chief Executive Officer and Chairman Ghosn by slashing jobs, production sites and product offerings to save cash and ensure its survival. In addition to slumping sales, production disruptions caused by China's coronavirus outbreak could also drag profits lower. Three senior officials at Japan's No. 2 automaker told Reuters that they anticipate a poor results announcement on Thursday, with one of them calling the figures "dismal". Two of the officials cautioned that there is the possibility of an operating loss, which would be the first quarterly loss since the period ending in March 2009. Nissan said it could not comment on its financial results ahead of its official announcement. The company is likely to report operating profit of 48.6 billion yen ($442.5 million) for the quarter ending in December, less than half the 103 billion yen profit a year ago, according to SmartEstimate's survey of three analysts, who revised their forecasts in January. However, those forecasts were issued before the release of the December vehicle sales figures on Jan. 30, which show third-quarter sales dropped by 11% from the year earlier period, according to Reuters calculations. That is the biggest quarterly slump of its current sales downturn that began two years ago. That sales decline led one auto equities analyst based in Japan to scrap his forecast and also warn that Nissan could post a loss. "It will be a question of whether there will be a profit or a loss. For the quarter, a loss is a possibility," he said, declining to be named as his forecast had not been updated to reflect his latest view. One of the three Nissan officials said there is a risk the automaker may cut its full-year profit forecast of 150 billion yen, which would be an 11-year low. The company announced that forecast in November after an initial 230 billion yen outlook.

Infiniti spruces up the Q50 for 2018

Though overshadowed by the literally larger QX80 Monograph SUV concept, Infiniti's revised 2018 Q50 still made an appearance at the stand in New York. It joins a long list of cars including the Acura TLX, Hyundai Sonata, Mitsubishi Outlander Sport, VW Golf, and Toyota Sienna and Yaris that all went under the knife for the show. The Infiniti Q50's update may be one of the most mild, though, as it only consisted of cosmetic changes. Up front, the grille has been enlarged and given more prominent swoops at each corner. On the S version, sharp creases appear on either side of the primary grille and descend down to the lower, center grille. The outboard grilles of the front bumper have changed shape, too, and they now feature contrasting black plastic trim. The standard Q50 has a new bumper, as well, and though less aggressive than the S version, it still looks sporty with a more pronounced chin spoiler. Both iterations of the 2018 Q50 share the same tail end. The main change is in the rear bumper. A center diffuser has now appeared at the base. The contour of the diffuser is echoed by two creases in the bumper at progressively higher points. On the S model, the panel between the diffuser and the first crease is painted black, and the diffuser is painted in the body color. The standard model's entire bumper is painted in body color, and the diffuser looks to be a more muted black or gray. Inside, even fewer changes have been made. A new steering wheel with reshaped thumb grips is now included. Infiniti also added new stitching to the instrument panel cover and leather shift knob. You'll be able to examine all of these changes up close at an Infiniti dealer this summer when the cars arrive. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.