2011 Nissan Altima S Coupe 2-door Red, 34k Low Miles, 6-spd Auto, Heated Leather on 2040-cars
Sacramento, California, United States
2011 Nissan Altima 2.5 S-Coupe 2-Door For Sale
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Nissan Altima for Sale
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Auto blog
Infiniti's new VC-T changes the rules of small turbocharged engines
Sun, Aug 14 2016The 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.
2014 Nissan GT-R squeaks in under $100k*, Murano CrossCabriolet priced, too
Fri, 25 Jan 2013Another year, another price hike for the ridiculously awesome Nissan GT-R. When the GT-R was introduced for the 2008 model year, it had a starting price of $69,850, increasing steadily each year up to $96,820 for 2013, and now Nissan has announced that the 2014 GT-R will have a base sticker price of $99,590 (*not including the destination charge, which has not been announced yet).
More than just a simple price hike, the 2014 GT-R gets some upgrades, continuing the model's other longstanding tradition - continuous improvement. While there has been no increase in power, Nissan says the 545-horsepower, twin-turbo V6 now has better response in its mid- and upper-rpm ranges. Nissan has also improved the car's handling, giving it different shock absorbers, springs and a reworked front anti-roll bar, along with "increased body rigidity," though it doesn't specify how the latter is accomplished. The changes are said to lower the coupe's center of gravity and further improve its (already spectacular) handling. A few styling tweaks include the addition of a Premium Interior Package offering hand-stitched red leather seats, a color pattern for the steering wheel on the $109,300 GT-R Black Edition and an engraved aluminum plate showing the owner who built their car's engine.
Along with the announcement of the 2014 GT-R, Nissan also released details for the 2014 Murano CrossCabriolet. The big - but not surprising - news is that Nissan has lowered the price of its slow-selling crossover convertible to $41,995, representing a price drop of just over $2,500. Aside from price, model year changes include two new exterior colors and redesigned 20-inch wheels.
Nissan's Carlos Ghosn taps the brakes on autonomous car progress
Fri, 18 Jul 2014
"Self-driving cars remain a long way from commercial reality."
Nissan CEO Carlos Ghosn shocked the automotive industry last year when he announced that his company plans to offer consumers an autonomous car by 2020. The automaker even showed off its self-driving Leaf prototype as proof. He was bolder recently with the pronouncement that select markets could have them in 2018, if laws allowed. The boss' optimism appears to be waning, though, and he's now sounding a lot more conservative about the future. While driverless vehicles are still on the way, Ghosn is hedging his bets with a more gradual implementation of several systems.