fuelefficiency
Latest
GM shows off Terrain SUV with noise cancellation, says silence equals fuel efficiency
GM claims its new Terrain has other SUVs beat when it comes to fuel efficiency, and they're citing active noise cancellation -- a concept near and dear to audiophiles everywhere -- as one of the driving factors that puts it 4MPG above the competition. Basically, the Terrain's enlisted a new one-touch "Eco mode" that allows its four-cylinder engine to run at a lower torque, decreasing engine speeds, and thus saving gas. The thing is, this increased fuel efficiency comes with a "low-end frequency boom," which is where the noise cancellation sets in: two microphones built in to the car's headliner detect the boom, prompting a frequency generator to pump counteracting sound waves through Terrain's speakers. Simply put, GM's just getting rid of an unpleasant hum. So a quieter car isn't necessarily a greener car, but we'll take a more fuel efficient SUV any day. If you're picking up what GM's laying down, check out the full PR after the jump.
Volkswagen's XL1 concept plug-in diesel hybrid has 260MPG fuel efficiency, questionable aesthetics
Steaming down the autobahn could be about to get a whole lot more efficient. Volkswagen has carted out its newly updated Super Efficient Vehicle concept, now dubbed the XL1, which -- after a great deal of fuzzy math, we're sure -- is rated at a 313MPG fuel efficiency and produces only 24g of CO2 per kilometer traveled. There's an electric motor and a TDI diesel engine making all the buzzing and roaring noises inside, while the overall body design is focused on making the car as light and as aerodynamic as possible. Volkswagen has achieved a 795kg curb weight by using carbon fiber, magnesium, ceramics, and aluminum to shave down any excess portliness from the XL1, while wind-tunnel testing and optimizations have resulted in a rather exemplary 0.186 drag coefficient. It's rare to see such attributes on anything outside the supercar realm, but then there's a reason why this PHEV is still only a concept. FOF. Update: Oh bother. Turns out Volkswagen's mileage claim is based on Imperial gallons, which are 1.2 times the size of the American stuff, meaning that the XL1 actually measures in at 260MPG when viewed through US glasses. Now do you see why the rest of the world has gone metric?
Regenerative shock absorbers developed by team at MIT
A team of undergrads at MIT -- led by Shakeel Avadhany and Zack Anderson -- has produced a prototype of a shock absorber for vehicles which can harness and generate electricity back into the vehicle. The team claims that their prototype increases a vehicle's fuel-efficiency by up to 10 percent by using a "hydraulic system that forces fluid through a turbine attached to a generator." There is an active electronic system for controlling and optimizing the damping for a smoother ride than regular old shocks. The team is actively seeking to develop and commercialize the product, and have already seen interest in the prototype from the United States military and also several manufacturers of trucks, which see the most benefit from the shocks... so look for these guys on Grave Digger any day now.
Nissan ECO pedal promises to push back against aggressive drivers
While Nissan hasn't quite cut drivers out of the equation all together (yet), it is making some considerable progress in controlling just how they drive, including preventing folks from driving drunk and, now with its new ECO pedal, preventing people from driving inefficiently. To do that, the pedal simply pushes back against the driver's foot when it detects wasteful acceleration, which Nissan says could improve fuel efficiency by as much as five to ten percent. Of course, the system can be switched off, and it likely won't be making an appearance in all Nissan vehicles right off the bat, although the company says it'll be showing up in at least some of them as early as next year.[Via Autoblog]
Prius hack utilizes Vehicle-to-Grid technology to power your crib
For those of you Prius owners who felt the novelty of a hybrid vehicle was finally wearing off, a whole host of new hacks are starting to emerge, which should go quite a ways in expanding the utility of your gas-sipping whip. When you're not cruising around at the tune of 116 mpg, you can purportedly flip the power in reverse and actually juice up your house with your ride. A prototype system being demonstrated by California's Pacific Gas and Electric Company utilizes Vehicle-to-Grid (V2G) technology to actually send power in reverse to energize a few in-home lights, appliances, and of course, Wii exercise sessions. Potentially more interesting is the possibility to actually "sell back energy to the utility during hot afternoons when demand is highest and most costly to avoid blackouts." No word just yet on when this stuff will be rolled out en masse, but if you needed just one more reason to plunk down for a Prius, it doesn't get much better than this.[Via The Raw Feed]
Get more mileage from that Hummer
Nothing, we mean nothing, says success like rollin' in a big fat Hummer eh sparky? Only thing is, you can't stand the thought of those accusatory stares from your fellow highwaymen as you lumber along sucking-up fuel. Well, we guess you never heard of the Mileage Maximizer then? Don't sweat it, 'cause two friendly Detroit, rock city Hummer dealerships have, and they'll happily sell you the $190 wonder mod while touting its 30% increase in fuel efficiency. The promotion has been so successful at selling new Hummers in fact, that these boys are now considering expanding the modification to more stores and vehicles. Sure, GM and Hummer officials don't endorse the application of the "Vortex Valve" to the vehicle's intake manifold and may not even honor warranties. And just you never mind that no one will stand by those unofficial claims of increased efficiency or that tampering with the emission controls on EPA certified vehicles is, ehem, illegal. You go right on feeling better about yourself... after all, you tried, right?
The Wheel turns your bike into a moped
Bicycles have always been a great way to get around, but the whole pedaling thing really takes away a lot of the appeal for some people -- we're sure countless dusty bikes with flat tires are hanging in garages nationwide. Well a company called RevoPower wants to put that huge fleet of two-wheeled vehicles back on the road with an innovative new product that easily converts most mountain or hybrid bikes into 20MPH mopeds. The Wheel, as it's known, manages to pack a gasoline- and oil-powered 23cc, two-stroke internal combustion engine into the space between a standard wheel's spokes, giving it a clear advantage over other modification kits which require tinkering with the existing drivetrain. Once the old wheel has been swapped out for the new Wheel, all you need to do is attach the throttle control to your handlebars and slide the fuel container into your water bottle cage (hope you don't get thirsty on your ride), and you're ready to hit the streets at an environmentally-friendly 200+ MPG. A video of The Wheel (and some overly-eager focus group members), which is due out next year for $400, is available by clicking here.[Via Popular Science and high t3ch]
