2005 Nissan 350z Enthusiast Convertible 2-door 3.5l on 2040-cars

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Nissan not shuttering Leaf EV battery plants, at least not yet

The big news on the electric vehicle front today is that Nissan is considering slowing down EV battery production in the US and UK and source all of Nissan's big packs come from Japan. Nissan may also buy some batteries from the Korean company LG Chem. This is apparently causing dissent within Nissan, but it follows what Alliance partner Renault is doing in the hunt for 180-mile EVs. This change – officially denied by Nissan – raises a lot of questions here, since Nissan made a huge deal about building the Leaf pack in Tennessee a few years ago. In fact, the car's big price drop was due, in part, to localizing battery production. If the company is really going to give up on building the packs where it makes the cars, then does Nissan not see itself as being capable of producing an energy-dense battery cheap enough to compete with Tesla and its Gigafactory and GM (which, of course, has long worked with LG Chem on batteries)? Whatever Nissan decides, it needs to be ready to compete in a market that offers a $35,000, 200-mile car by 2017. "We have not taken any decision whatsoever to modify battery sourcing allocation." – Renault-Nissan's Rachel Konrad Nissan would not comment directly on the reported change, but Rachel Konrad, the Alliance's global director of communications and marketing told AutoblogGreen, "The Renault-Nissan Alliance remains 100 percent committed to its industry-leading EV program. This global commitment continues for the foreseeable future, and we have not taken any decision whatsoever to modify battery sourcing allocation. Nissan has no plans to impair its battery investments. Beyond that,we will not comment on speculation or anonymous sources, and as a matter of policy the Alliance does not confirm or deny procurement reviews." There's a point-of-view where it doesn't matter where the batteries come from if the resulting EV is competitive, price-wise. Renault CEO Carlos Ghosn, after all, said during a recent Twizy test drive that the battery is a means, and the objective is the car. In the end, Nissan is saying it has no near-term or medium-term plan to shutter plants in US or UK and CEO Carlos Ghosn says, "What's important to us is that electric car performance fully meets customer expectations." Whatever's going on, Ghosn has seen three top executives leave the Renault-Nissan family recently.

Infiniti's new VC-T changes the rules of small turbocharged engines

The upcoming Infiniti QX50 crossover does not get our pulse racing, no matter how shapely the QX Sport Inspiration concept that previews it may be. No midsize SUV does, to be fair. But it has something special under the hood – the world's first production variable-compression-ratio engine. That means the QX50's 2.0-liter turbo four, which makes 268 horsepower and 288 pound-feet of torque, will have up to 27 percent better fuel economy. Here's how it works. The trend of moving to smaller, turbocharged engines carries with it one big falsehood. Under low load when the turbo isn't needed, these engines are less efficient than an equivalent engine without a turbo because of the low compression ratio the turbo requires. That is, if you never need the extra power, you're wasting fuel. Turbocharged (and supercharged) engines use a lower compression ratio to prevent detonation. When you force extra air in a cylinder and mix it with fuel, it's more likely to prematurely go boom. Lowering the compression ratio prevents this problem, but it's less efficient. Infiniti's VC-T promises the best of both worlds, with a compression ratio that ranges from 8.0:1 for high-power turbo needs to a 14.0:1 ratio for fuel-sipping efficiency. At its heart the VC-T engine is a simple idea, but it's complicated to explain. Consider yourself warned. The photo below from Infiniti serves as a good visual overview. For the truly nerdy, this patent application covers the mechanical concept. Instead of having the pistons connected to the crankshaft, Infiniti's engine has a pivot arm with a connection on each end. One end connects to the piston, the other connects to a second lower shaft, which is controlled by an actuator arm. At any given time the engine's pistons move up and down according to the lobes on the crankshaft. But the actuator arm can change the angle of the pivot arm up and down. That is, the pistons still move in the same motion with the same stroke, but phase the entire stroke up or down. Move the pivot up and there's less room at the top, which means a higher compression ratio. Move the pivot down and the compression ratio goes down, too. As an added bonus, the lower shaft eliminates the need for counter-rotating balance shafts. Infiniti says this system works constantly and can vary the compression ratio to any number between 8:1 and 14:1. It also uses electronic variable valve timing on the intake valves to switch into Atkinson-cycle combustion for greater efficiency.

Nissan to give Qashqai the Nismo treatment

Nismo is on a bit of a rampage lately. Once consigned to the fringes, Nissan has taken its performance sub-brand into the mainstream and let it loose on a whole mess of its products. The Juke Nismo was followed by a 370Z Nismo, and in Los Angeles, we saw the GT-R Nismo, Sentra Nismo concept and Juke Nismo RS.
So what's next from Nismo? According to the latest intel from across the pond, Nissan is working on a tuned version of its new Qashqai. Car magazine is reporting that the larger crossover will get the same 1.6-liter turbo four as the Juke Nismo, but with the RS model's 212-horsepower out and not the "base" model's 197. Expect all the other bells and whistles applied to transform a Nissan model into a Nismo one to apply as well.
If the Qashqai name doesn't ring any proverbial bells for you, that's alright, because it's only sold overseas, where it's one of Nissan's most popular models. The crossover (which looks like the new Rogue but is a substantially different model) was recently completely replaced, with engine options ranging up to 150 horsepower - so the jump to over 200 should make for quite a different beast altogether. Whether a parallel or subsequent program to give the Rogue a similar treatment is another matter, but given the pace at which Nismo seems to be running, that may only be a matter of time.