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A look inside Infiniti's variable-compression engine

We're sympathetic to anyone who had trouble understanding what's going on with Infiniti's new variable-compression engine. While we got a full tech briefing on the novel VC-Turbo back in August, the visual aids were lacking. The cutaway engine Infiniti brought to the Paris show fixes all of that. You can thank the little green and pink lines on the cutaway for making the whole idea a little more clear. Click through the gallery to see two lines – one green and one pink – that represent the different strokes allowing for different compression ratios. Remember, the compression ratio is the amount of volume in the cylinder on intake compared to the amount at the end of the compression stroke. Leave more room at the end and you lower that ratio. The length of the stroke doesn't change with this system, but where it sits along the cylinder does. Hence those two lines. The variable compression ratio allows this new turbocharged engine to maximize fuel economy when the turbo isn't needed by raising the compression ratio. It will see its first use in the next Infiniti QX50 crossover, previewed by the QX Sport Inspiration concept that's also on display in Paris, and has performance targets of 268 horsepower and 288 pound-feet of torque. After, it will migrate to other Infiniti and Nissan vehicles, with transverse front-drive-based applications first in line. Eventually, it's likely to completely replace Nissan's corporate 3.5-liter V6. We'll be poking around the engine a little more in Paris today to try and get some more info. For now, enjoy those cutaway images and those friendly little lines. Featured Gallery Infiniti VC-Turbo engine cutaway View 14 Photos Paris Motor Show Infiniti Nissan Technology Emerging Technologies engine 2016 paris motor show

Watch 14 hot rides take over concept car lawn at Pebble Beach

The Pebble Beach Concours d'Elegance is an annual celebration of the beautiful, old cars that grace Monterey Car Week. But Monterey – and Pebble – features lots of newer metal, too, and that includes the concept lawn at Pebble Beach. Now, "concept lawn" isn't a totally accurate name anymore, and you'll see why in the list below. This year especially, plenty of production cars can be found in the area once reserved for the conceptual. Still, we're happy to see them. Here's what's featured this year: Alfa Romeo 4C Spider Audi R8 BAC Mono Bentley EXP 10 Speed 6 BMW 3.0 CSL Hommage R Buick Avenir Galpin-Fisker Rocket Speedster Hyundai HCD-16 Vision G Coupe Icona Volcano Infiniti Q60 Lamborghini Asterion LPI 910-4 Maserati Ghibli McLaren 570S Rolls-Royce Wraith By our count, that's seven concepts out of fourteen cars. But it still makes for one hot group of metal. Check 'em out in the gallery above. Related Video: Related Gallery 2015 Pebble Beach Concept Car Lawn View 38 Photos Image Credit: Copyright 2015 Drew Phillips / AOL Design/Style Alfa Romeo Audi Bentley Buick Infiniti Lamborghini Lincoln McLaren Porsche Concept Cars Videos Original Video Pebble Beach

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.