Why Hydrogen-On-Demand
Enhanced Fuel Combustion

What happens when you increase the quality of air going into your engine? Guaranteed Fuel Savings. Our company averages a 27% fuel savings in California. In other countries, we have seen up to 55% fuel savings with THIRD PARTY DATA.

Our carefully mixed solution of distilled water and electrolyte is circulated through an electrically charged cell. From this interaction, the hydrogen and oxygen molecules are separated, creating high quality hydrogen known chemically as Hydroxy. This potent Hydroxy gas is then transported through a small hose and fed directly into the engines air intake. When operating in normal conditions, the recommended volume of Hydroxy gas represents less than 2% of the air intake volume. Tests show this ratio of air fuel mixture significantly improves engine performance due to the superior and more efficient combustion of the combined fuel, oxygen and hydrogen mix.

It is the case that many heavy-duty, commercial grade engines are only about 30% efficient in converting fuel energy into mechanical horsepower, so the majority of that usable fuel energy (70%) is wasted. This wasted energy manifests as unconverted fuel emissions and other pollutants. We see these unburned elements in the form of carbon monoxide (CO), nitrous oxide (NOx), and other particles that are emitted in the engine’s exhaust. When a calibrated amount of Hydroxy gas is introduced into an engine, the ratio of burned and unburned fuel is reversed, for more thorough combustion. It is easy to see how the higher rate of combustion results in more horsepower, better fuel mileage and less emissions.


As mentioned above, the amount of Hydrogen gas produced by our system averages approximately 2% of the air-fuel mixture ultimately being ignited in the engine chamber. Since only a small amount of hydrogen is produced, and only when demanded by the engine, the gas delivered on-demand and is never stored. When the engine is idling Hydroxy production is minimal and disburses rapidly into the air. This, combined with several safety mechanisms, ensure complete operational safety.

The HOD systems are designed with safety features that we refer to as “Quadruple Safety Protection”. CVHHO has designed four layers of redundant safety features to ensure the cells operation ceases when the vehicle is off and prevents damage to the cell in the event water levels deplete to non-operational levels. In the event a safety mechanism is triggered and the unit shuts off with no negative effect on the operation of the engine. Our operational safety mechanisms are explained below:

  • Engine ignition switch cuts power to the unit when engine is turned off.
  • Oil pressure safety switch turns the unit’s power off when it detects zero oil pressure.
  • Internal pressure safety mechanism that detects any restriction of hydrogen flow and powers off the unit.
  • A water-level safety that cuts power if the water reservoir depletes.

Maintenance Benefits

Shortly after installing a CVHHO system, customers notice the engine running smoother and lower exhaust temperatures. Over the longer term, carbon deposits are being cleaned from the inside of the engine. A cleaner burning engine means that engine components stay cleaner and require less frequent maintenance, especially oil.