Engineering students in Palwal City, India, built a motorcycle that runs on a tank of compressed oxygen:
"This bike is different from others because the engine doesn’t burn fuel, nor does the temperature rise. The air is compressed and transferred to the engine without any combustion. The piston reciprocates from the air pressure leading to an up-down movement, making the flywheel run and the bike move.”
Students say the basic concept behind the invention is to achieve an equivalent thrust of blast inside the engine without using any combustion.
The bike can run at a speed of six to 12 miles an hour for up to 370 miles using 100 liters of 300 PSI oxygen.
Video at the link.
Link via Walyou
Seriously though, that's pretty damn awesome.
Safety around pressurized tanks is another issue. I usually don't comment but i felt like i could contribute a little bit to clear up misguidances
"Air" is only 21% (roughly) oxygen. Pure compressed O2 is a significantly greater hazard.
Where is the environmental benefit? Where will they get the energy to compress the gas? All they are doing is transferring the pollution from the city streets to a very inefficient power generating station our side town.
Granted IC engines, and esp. those in third world countries are extremely inefficient and horribly polluting but to beat one's chest and say that you have solved the pollution problem with compressed air is a waste of good engineering minds.
So some guy scales up a pneumatic impact wrench and gets on Neatorama.
Hold on I have to go invent something terribly derivative in order to be famous.
Compressed gas engines have been around for a very long time. And a few people along the way have made cars and motorcycles with them.
And you know what they call a 3000psi compressed air tank?
A rolling BOMB - and delivery vehicles in most countries are required to carry special warning flags....
Hard to believe any of the facts... 3000psi (not 300) is 100 atmospheres, so the tank holds maybe 1000 liters. The engine is around 1/4 liter per revolution, so the bike can run about 4000 engine revolutions per tank. How does that get you 370 miles?
Who wants a heavy motorcycle which only goes 6 to 12 MPH? I can ride my bike 2-3 times faster. An electric bike is much more practical if you don't want to pedal.
And I would not sit on a compressed air tank of 3000 or 300 or even 50 PSI considering how much damage could be done to the family jewels.