The answer to "why" is very simple. If it takes less energy to achieve a higher output within a fuel cell, the fuel cell itself is inherently more efficient. How Ogura hydrogen pumps do it is a little more complicated. The lobes in the Ogura fuel pump are made from extruded aluminum and are hollow. Therefore, they have a very low inertia compared with other roots style blowers. In addition, the lobes have a unique low profile. As they rotate in the housing and between themselves, they have a large surface area and very close tolerance between themselves and the housing. In addition, the lobes have a special coating on the surfaces which will absorb contaminants instead of scraping against the housing helping to maintain a close tolerance and eliminating housing scoring, which helps maintain a high efficiency.

Since both, the lobes and housing are aluminum, expansion rates from heating and cooling are consistent helping to maintain design tolerances.

Our unique Blower Hydrogen seals are a real breakthrough in rotary pumps of any kind. They are able to seal against the universe's lightest gas, while being able to withstand the constant pounding of water molecules (and steam). Special dual seals and ports (cavities) prevent the H2 from entering our gearcase, and prevent the gearcase oil from entering the H2 stream. A strong first of its kind for our production team and leading to long extended lifetimes for our customers.

Benefits of using Ogura superchargers are:

• Higher operating efficiencies
• Designed for pumping wet hydrogen
• Special coating on rotors prevent damage from contaminants
• Lightweight aluminum housing provides excellent heat dissipation

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