New X-Prize for Fuel Efficient Cars Announced 371
miowpurr writes "A new X-Prize for ultra fuel efficient cars has been announced. The winning car must 'carry four or more passengers and have climate control, an audio system and 10 cubic feet of cargo space. They also must have four or more wheels, hit 60 miles per hour in less than 12 seconds and have a minimum top speed of 100 miles per hour and a range of 200 miles. Those that qualify will race their vehicles in cross-country races in 2009 and 2010 that will combine speed, distance, urban driving and overall performance.'"
Car Must Be 100 MPG+ (Score:5, Informative)
MPG? (Score:5, Informative)
My car does that now. The summary left out the most important piece of information: the car must get 100 MPG or more.
100-mpg vehicle ! (Score:2, Informative)
ER
Water4gas Scam Reviewed (Score:2, Informative)
A Certified Master Mechanics review of the water4gas system.
http://www.auto-facts.org/water4gas-scam.html [auto-facts.org]
Re:Why 100 mph minimum speed? (Score:2, Informative)
For that you need power.
More power increases the top speed.
Draft Guidelines (Score:3, Informative)
Re:Car Must Be 100 MPG+ (Score:5, Informative)
Re:No Batteries Allowed (Score:5, Informative)
Comment removed (Score:3, Informative)
Comment removed (Score:4, Informative)
X Prize Cars (Score:2, Informative)
Re:Less exciting (Score:3, Informative)
The Tesla doesn't have 4 seats or the cargo capacity, so it is out from the start.
Rule summary (Score:4, Informative)
Fuel economy >100MPGe
4+ passengers
Must meet US EPA Tier II bin 5
Must meet US safety regulations
Must have features considered standard in today's automobiles at a cost that is not prohibitively expensive, and must provide a business case proving so.
water 4 gas (Score:4, Informative)
Flow rate.
Say an engine has a displacement of 3 liters and is operating at 2000 rpm.
3 liters * 2000 rpm
the electric power required to electrolyze the hydrogen equivalent to 1 gallon of gasoline is equal to (500 moles) x (0.06587 kWh/mole) = 32.935 kWh, and the approximate cost of that power = (32.935 kWh)
credit to this site http://www.stardrivedevice.com/electrolysis.html [stardrivedevice.com]
How much current can you alternator put out? Maybe 100 amps. How much hydrogen could your car generate per min? How much power can your alternator produce 100A *13.7V 1.37 KW
How much hydrogen could your car produce per min?
1.37 * (.06587 kWh/mole) / 60min/hr * 22.4 liters/mol = 0.033 liters of hydrogen per min
Compare this to the number above for the volume of air entering the engine.
How much hydrogen would one need to run a vehicle?
If 500 mol of hydrogen = 1 gallon of gasoline
If the vehicle gets 30 mpg at 60 mph = 2 gallons of gasoline per hr or 1000 mol of hydrogen per hr * 22.4 liters / mol / 60 min / hr = 373 lites per min of hydrogen
Compare this to the number above.
If anything all those hydrogen generator scams are going to do is create a vacuum leak that will turn on your check engine light.
Re:100 MPH? (Score:3, Informative)
Re:realistic specs?? (Score:2, Informative)
As others have said, you want to be able to go 70 when going uphill too. One of my friends had an old junker when we were undergrads that could easily maintain highway speeds on flat roads (we were definitely in the 70s at times) but whenever she would come back to school, approaching the town you have to go over a ridge in the Appalachians. She could hit the bottom of the ridge going 70, keep the pedal floored, and be going 45 or 50 at the top. This isn't some back road either; it's the main route into PSU from the south-east, and is a four-lane segment of US-322.
Requiring 100 mph is probably a simple way of trying to prevent something like that from happening.
Re:100 MPH? (Score:5, Informative)
Re:Less exciting (Score:1, Informative)
Re:More practical than other X prizes (Score:3, Informative)
I don't think there is much likelihood that this prize will have any major impact on an environmental level. Addressing fuel economy globally is not at all about creating the most efficient technology. It will be about creating the most mass producible solution. The best solution will be the one that relies on the most abundant resources.
We see contention now in the number of hybrid electric vehicles that can be produced, because they all depend on a limited supply of some common parts. The more Prius vehicles produced means the fewer HEVs that can be produced by other manufacturers. Doesn't the Tesla run on something like 100 laptop batteries. That means that for each one, 100 fewer laptops can be produced. One factory produces seemless containment units for nuclear reactors. They produce 8 a year. That means that only 8 reactors based on that technology can be opened each year. Wind power is more viable solution for global impact because the materials for turbines are easily acquired, even if the power source is unreliable.
I suspect that this will produce a nice pet project for enthusiasts, but not one that will have a large impact.
Re:realistic specs?? (Score:1, Informative)
I've experienced similar with old UHaul vans. I had one of the large ones (with a manual transmission) that was downright scary on the interstate. I'd have it floored going down hill just to be able to crest the next hill at 55 mph. On a 70 MPH interstate, that's just no fun.
Re:Less exciting (Score:2, Informative)
Re:More practical than other X prizes (Score:3, Informative)
Same thing for laptop batteries. The price system communicates in real time, and flood-fills the marketplace with information about what should, and what should not be built.