2014 Nissan Pathfinder Sl on 2040-cars

Auto blog

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

Nissan Leaf battery cells put through torture test, live to charge again

One minor chink in the armor of the Tesla Model S is that a small number have caught fire, once their battery packs were penetrated. Nissan Leaf drivers, however, might just be able to weather such an event without an ensuing CarBQ. Our evidence for such a claim? A video that has surfaced of cells from a Leaf pack undergoing a battery of torture tests (pun somewhat-ashamedly intended). Shared by folks at the Hybrid Auto Center in Las Vegas – who offer for sale, among other things, used Leaf lithium battery modules – the footage shows salvaged cells being brutally assaulted with a screwdriver, and later, a propane torch. Granted, these tests are not the same thing as flinging a piece of metal into a working pack at 70 miles per hour, but they do claim to show that a puncture does not always equal a fire. Oh, and don't try this at home. When pierced through by the flat head tool, there is no explosion or eruption of flame. Instead, a rather modest wisp of smoke shyly emerges as the electrolyte next to the shorted area of the fully-charged foil pouch reacts with the influx of oxygen. Again and again, the blade descends, until the cell is riddled with holes. No fire. Amazingly, when connected with a voltmeter afterward there are still plenty of signs of life, and when it is charged and discharged (off-camera), it reportedly suffers only a slight loss of charge capacity. The video goes on to show another cell attacked with open flame with similar results. While the demonstration is, perhaps, somewhat crude, the message it sends is loud and clear: lithium batteries can be safe and rather robust, despite some freak accidents. Scroll below to watch the short presentation for yourself. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Recharge Wrap-up: Reverse graffiti powered by Nissan Leaf; BMW introduces Wallbox Pro

BMW has a new, faster version of the Wallbox home EV charger. The Wallbox Pro offers 7.4 kilowatts, and can charge the BMW i3 to 80 percent in under three hours. It features a seven-inch touchscreen and proximity sensor, plus an 11.5-foot cord. The Wallbox Pro can also be used with smart home systems such as lighting and heating. The Wallbox Pro is available in Europe, and will come to the US later in the year. Read more at Hybrid Cars. Nissan is using the Leaf to power the creation of "reverse graffiti" in London. The company has commissioned artist Moose to selectively wash dirt off of a wall outside of a subway station, leaving behind a mural of London landmarks. Moose used a jet washer powered by the Leaf's battery to create the piece. The goal is to highlight the amount of pollution in London and other large cities, which is not a new idea. "It is a reminder that electric vehicles don't have an exhaust to emit the kind of air pollution which has stained the wall Moose has created his piece on," says Nissan's Jean-Pierre Diernaz. See the artwork in the gallery, and read more in the press release below. Local Motors used a 3D printer to make the Strati electric car in 44 hours. The car was printed with 212 layers of carbon-reinforced ABS thermoplastic. After printing, the team then spent two days finishing the car to make it run. It is powered by the drivetrain from a Renault Twizy, and is capable of 40 miles per hour. Now the question is if this sort of small-scale car manufacturing using 3D printing technology will catch on. See how a car gets printed in the time-lapse video below, and read more over at Treehugger. Nissan cleans up London with the world's first car-powered graffiti - Nissan LEAF powers "Reverse Graffiti" street art in Waterloo - Mass-scale mural imagines a cleaner London, without car fumes - The artwork is on show in Waterloo, London near popular Southbank LONDON – Nissan is highlighting London's battle with air quality in the UK by using the 100% electric Nissan LEAF – the world's best-selling electric vehicle (EV) – to power a striking piece of street art in Waterloo, London that depicts the capital's iconic skyline. Nissan commissioned Reverse Graffiti artist Moose – the founder of his field – to create the mass-scale mural, which was unveiled today. Unlike traditional graffiti, Moose creates his art by cleaning dirt off surfaces using a jet washer or wire brush, leaving a striking design in negative on the wall.