FAQ

Is it harmful to supply hydrogen and oxygen together (HHO) to the engine? Is pure hydrogen required instead?

No. There isno scientific evidence showing that supplying HHO gas (a mixture of hydrogen and oxygen) to an engine causes any harm.

On the contrary, peer-reviewed international studies demonstrate that delivering hydrogen and oxygen together results inmore homogeneous, more controlled, and more efficient combustion.

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Engines already operate with atmospheric air.

Atmospheric air contains:

• 21% oxygen

• 78% nitrogen

The amount of oxygen produced by HHO systems is extremely small—approximatelyone ten-thousandth of the air entering the engine.
Therefore:

• HHOdoes not disrupt the air–fuel ratio (AFR)

• It doesnot create a condition that the ECU needs to correct

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Why HHO is beneficial

HHO combines:

• Hydrogen’svery high flame speed

• Oxygen’s ability tocomplete combustion

Together, these effects provide:

✔ Increased combustion efficiency
✔ Reduced carbon and soot formation
✔ Cleaner engine operation
✔ No increase in EGT (Exhaust Gas Temperature)

There isno scientific publication reporting that HHO increases engine temperatures or causes engine damage.

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Why pure hydrogen is more problematic

Pure hydrogen behaves more aggressively in terms of thermodynamics and combustion behavior:

• It has avery high flame speed

• It increases the risk ofpre-ignition and knock

• Without balanced oxygen support, combustion becomes harder to control

For these reasons, academic studies show thatHHO provides more stable combustion compared to pure hydrogen injection.

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Conclusion

HHO isnot harmful to the engine, and the claim that “pure hydrogen is required” isscientifically incorrect.

When supplied at the correct flow rate and with proper system design, HHO improves combustion efficiency and helps the engine operate:

• More efficiently

• More cleanly

• With lower emissions