Imagine if a little bit of water could make your internal combustion engine run cleaner and more efficiently, and help it produce more oxygen than a tree. That's what the LeefH2 device is designed to help your motor do. HNO Green Fuels, the maker of the LeefH2, wants to turn your engine – and every other combustion engine – into an oxygen farm while reducing particulate matter and getting more power out of your fuel.

The LeefH2 is a relatively small device that attaches to an internal combustion engine. The larger, High Volume Unit (HVU) is 10 by 8.5 by 6.5 inches, while the smaller Low Volume Unit (LVU) is 9 by 6 by 5.5 inches. Most of the available literature focuses on cleaning up diesel engines, but the same technology can be applied to gasoline and jet engines, which have pollution problems of their own. The LeefH2 uses water to create hydrogen and oxygen. The oxygen gets dumped directly into the atmosphere, while the hydrogen gets piped into the combustion chamber (it's not stored). In the cylinder, the hydrogen, rather than being used as fuel itself, helps provide more complete combustion of the fuel, as it burns faster than the standard mixture of air and fuel. Not only does this make the engine more efficient (reducing fuel consumption), it also reduces the amount of particulate matter in the exhaust.

So far, in EPA-approved lab tests, the LeefH2 has been able to reduce the particulate emissions of smaller diesel engines by 49 percent, and larger diesel engines by 43 percent. HNO is confident that it could eventually refine the technology to decrease particulate matter by 70 to 90 percent. HNO projects that a single HVU LeefH2 device can produce, on average, 365 pounds of oxygen per year. That's more than the average tree, says HNO, which produces 260 pounds of oxygen per year.

Right now, HNO is running a crowdfunding campaign through Indiegogo to raise money for the LeefH2 project. Contributors at the highest level will receive a working prototype of the LVU LeefH2. You can learn more about the LeefH2 in the videos below, or get more details at HNO's website.

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