2001 Nissan Frontier Se Crew Cab Pickup 4-door 3.3l on 2040-cars

Auto blog

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.

Check out Nissan's clever digital Smart Rearview Mirror

Using cameras in place of a car's rearview mirrors has long been a feature of pie-in-the-sky concept cars, although so far, it's failed to translate into the world of production vehicles. Nissan is looking to change that, though, with its new Smart Rearview Mirror.
With a flick of a switch, drivers can jump back and forth between what they'd normally see through the rearview mirror and the camera's feed from the back of the car.
The Smart Rearview Mirror blends everything we know about traditional reflective glass mirrors with a video feed from the rear of the car into a form factor that's immediately recognizable to the average motorist. With a flick of a switch, drivers can jump back and forth between what they'd normally see through the rearview mirror and the camera's feed from the back of the car. The mirror itself features an integrated LCD display with a four-to-one aspect ratio.

RC car drift video brings Fast and Furious style in 1:10 scale

Taking a cue from Lexus' 2015 Super Bowl ad Let's Play, Falken Tire is proving that RC cars can drift just as well, if not better, than their full-size counterparts. However, to make things four times as exciting, this clip eschews a single hopped-up model hanging its tail out in favor of a quartet of them sliding around together. Starring 1:10 RC versions of popular drift machines like the Nissan S15 Silvia, Mazda FD-chassis RX-7 and Initial D star Toyota Corolla AE86, these cars also get a suite of blinking LEDs to lend some extra color to all of the tire spinning. Plus, the use of well-positioned cameras and a scale model environment almost makes this group look like they're at work in the real world. News Source: Falken Tire via YouTube Motorsports Toys/Games Mazda Nissan Toyota Racing Vehicles Videos drifting drift rc car mazda rx-7 nissan silvia toyota ae86