Hydrogen is the simplest and most common element here on earth, and indeed in the entire universe. An atom of Hydrogen consists of only one proton and one electron. Despite its simplicity and abundance, hydrogen doesn't occur naturally as a gas on the Earth—it is always combined with other elements. Water, for example, is a combination of hydrogen and oxygen (H2O). Hydrogen is also found in many organic compounds, notably the hydrocarbons that make up many of the common fuels that we use today, such as gasoline, natural gas, methanol, and propane.

Our cells produce Monatomic hydrogen. Monatomic hydrogen has energy characteristics that make it an extremely valuable and efficient when used with traditional hydrocarbon vehicles. Monatomic means that the hydrogen occurs as single atoms rather than the usual H2 seen in hydrogen gas. Monatomic gas is somewhat unstable and the atoms quickly combined into a typical lower energy H2 state. The key is to quickly inject the hydrogen gas into your vehicles air intake before it recombines.


Hydrogen disperses quickly. Being the lightest element (fourteen times lighter than air), hydrogen rises and spreads out quickly in the atmosphere. So when a leak occurs, the hydrogen gas quickly becomes so sparse that it cannot burn. Even when ignited, hydrogen burns upward, and is quickly consumed, as shown in the Hindenberg picture. By contrast, materials such as gasoline and diesel vapors are heavier than air, and will not disperse, remaining a flammable threat for much longer.

Hydrogen is a non-toxic, naturally-occurring element in the atmosphere. By comparison, all petroleum fuels are poisonous to humans.

Hydrogen combustion produces only water. When pure hydrogen is burned in pure oxygen, only pure water is produced. When a hydrogen engine burns, it actually cleans the ambient air, by completing combustion of the unburned hydrocarbons that surround us. Compared with the toxic compounds (carbon monoxide, nitrogen oxides, and hydrogen sulfide) produced by petroleum fuels, the products of hydrogen burning are much safer.

Water is comprised of two Atoms of Hydrogen and one Atom of Oxygen. Each gallon of water contains approximately 6800 liters of HHO (Hydrogen and Oxygen commonly referred to as hydroxy or Oxyhydrogen. The typical vehicle will see a dramatic increase in MPG's with between 1/2 liter and 3/4 of a liter of HHO per liter of engine size. So a 5.0 liter engine (gas or diesel) will need between 2.5 and 3.75 liters of HHO per minute. Gains on your vehicles will vary based on the engine’s size, the amount of HHO, climate as well as how well your vehicle accepts the HHO.

Check your state laws to determine the legality of adjusting vehicle sensors.
More on Hydrogen Production.
More on Hydroxy or Oxyhydrogen.

The molecules of hydrogen gas are smaller than all other gases, and it can diffuse through many materials considered airtight or impermeable to other gases. This property makes hydrogen more difficult to contain than other gases.

Hydrogen leaks are dangerous in that they pose a risk of fire where they mix with air. However, the small molecule size that increases the likelihood of a leak also results in very high buoyancy and diffusivity, so leaked hydrogen rises, escapes containment and becomes diluted quickly, especially out-doors or under the hood of a vehicle. This results in a very localized region of flammability that disperses quickly.

In contrast, leaking gasoline or diesel spreads laterally and evaporates slowly resulting in a widespread, lingering fire hazard. Propane gas is denser than air so it accumulates in low spots and disperses slowly, resulting in a protracted fire or explosion hazard. Heavy vapors can also form vapor clouds or plumes that travel as they are pushed by breezes. Methane gas is lighter than air, but not nearly as buoyant as hydrogen, so it disperses rapidly, but not as rapidly as hydrogen...

For small hydrogen leaks, buoyancy and diffusion effects in air are often overshadowed by the presence of air currents from a slight ambient wind, very slow vehicle motion or the radiator fan. In general, these currents serve to disperse leaked hydrogen even more quickly with a further reduction of any associated fire hazard.

http://www1.eere.energy.gov/hydrogenandfuelcells/tech_validation/pdfs/fcm01r0.pdf

But what if the hydrogen does somehow ignite in your car? Tests conducted at the College of Engineering at Miami University aimed to find this out. 3000 cubic feet per minute of hydrogen was leaked from a vehicle tank and set alight. Over the course of the burn, temperature sensors inside the vehicle did not measure an increase of more than 1 or 2 degrees centigrade anywhere inside the vehicle. The temperature of the surface of the outside of the vehicle did not climb above that of a vehicle sitting in the sunshine!

This might sound un intuitive. But when a carbon-based fuel like gasoline burns, glowing hot soot particles transfer the heat to its surroundings — potentially including you. But because hydrogen contains no carbon, it burns cleanly without a residue of hot soot, producing little radiant energy. This means that a victim would have to be practically in the flame in order to get burned.

http://rmi.org/sitepages/pid205.php

The AHS On-Demand Hydrogen System has been designed from the ground up using State of the Art Dry Cell Technologies. Most of our competitors use wet cell technology. Dry Cell Technology was chosen after evaluating numerous technologies over a 2 year period. It is simply the best most reliable design available today, and we believe that all Wet Cell products will quickly become yesterdays technology. Our Dry Cell had have have a design that allows us to build small units for the family car to monster units for the largest diesels on the road today. The AHS Dry cell incorporates precise cell-spacing, neutral plates and edge-hiding technologies which contributes to the high HHO production and reliability. Our systems run much cooler and on less amperage then its Wet Cell counterpart.

The materials used in our system are of very high quality and come with a 1 year warrantee, like Stainless Steel grade 316L for the plates, high temp acrylic panels and either brass, stainless steel or high impact / temp plastic input/output connectors and safety valves. Although the technology is not new, the AHS cell design is unique. In addition we balance the system by installing a Dual Micro-Processor Vehicle Management Unit which controls the vehicles sensors and actuators to keep the vehicles ECU (see below) from negating all the MPG improvements. Our systems also come with a pulse width modulator, a pump, a reservoir / bubbler, and a patent pending stainless steel radiator along with all necessary connectors, tubes, valves, solenoid, amperage regulation items, brackets etc. Check your state laws to determine the legality of adjusting vehicle sensors.

Virtually none of our competitor use any of the Sensor control technology or Pulse Width modulation we use, and consequently don't work. Oh our competitors systems work when they are first installed, but quickly lose all their MPG advantages within a few tanks of gas or diesel. Read below to find out why.

A little Background
The Electronic Control Unit (ECU) within your vehicle is always tracking changes in the engine's sensors and actuators. The ECU is never satisfied with these sensor settings and continually makes micro adjustments to their trim values. Once an On-Demand Hydrogen Generator is installed the ECU will discover whatever changes you make to your engine and make changes to your sensors trim values, eliminating any MPG improvement you have made. Consequently, if you hear someone make fantastic claims in MPG by installing a Hydrogen Generator but did nothing to solve the sensor issue, you should know that the claim is faults. Why? Because once the Hydrogen Generator is installed the engine receives Oxygen along with the Hydrogen into its air intake. The initial results are good, however, over the next few days to few weeks the vehicle will slowly make micro adjustments to eliminate or minimize the MPG improvements you have made and in most cases the MPG after installation is worse then before the installation because of the additional Oxygen.

Why?
As an example a typical gas engine's ECU that came with the vehicle is set up to insure approximately a 14.7:1 ratio between fuel and air, that is 14.7 parts air for each part fuel. When you install an On-Demand Hydrogen generator, the sensors within the vehicle starts receiving additionally Oxygen along with the Hydrogen. The additional Oxygen cause the sensors to determine that the fuel mixture has changed, it is now too lean. In an attempt to keep a 14.7:1 ratio, the ECU begins to make micro adjustments to your vehicles gas or diesel fuel system, richening the fuel mixture to balance the need for this ratio. So after the initial good results, maybe for a tank or three, these micro adjustment will cause the MPG advantage go away or it could even make the MPG's worse then before you installed the Hydrogen Generator.

The ECU uses the Main Airflow Pressure (MAP) or Mass Air Flow (MAF) sensor in your vehicle to determine how much air is coming into the manifold. It then adds enough fuel to compensate to its 14.7:1 pre-determined Air/Fuel mixture. The ECU keeps using the MAP/MAF sensors until such time as the O2 (Oxygen) sensors are up to temperature. Modern O2 sensors need to reach approximately 600*F in order to work. Once the O2 sensors are ready, the ECU will start monitor and control the Air/Fuel mixture by adding (or removing) fuel through the fuel injectors or carburetor. These adjustments are based on the O2 voltage output readings which in turn are base on how much Oxygen is being sensed.

So how does Advanced Hydrogen Systems solve this problem?
After we add the Advance Hydrogen System's On-Demand Hydrogen Generator, we need to alter the appropriate sensors (Manifold Air Pressure (MAP), Mass Air Flow (MAF) and Oxygen Sensors (O2), so they allow the newly introduced fuel without adjusting back to the pre-programmed 14.7:1 fuel mixture. Since HHO will add more Oxygen into the air intake manifold, we need to alter the sensors signal to stop it from delivering this information to the ECU. If we did not do this the ECU will inject more fuel to compensate for the extra Oxygen present. In fact, not altering the sensor’s signal will cause most vehicles to burn more fuel since the only thing the ECU is getting parameter feedback on is the increase in Oxygen not the Hydrogen.

We use a Hydroxy HHO Vehicle Management Unit capable of controlling up to four O2 sensors and one MAP (or MAF) sensor. In addition the VMU manages the Cell temperature and prevents overheating. Our VMU unit includes a Pulse Width Modulator (PWM) driving signals of up to 85 amps modulated at various selectable frequencies. The reason we use a PWM is that it produces more hydrogen at lower amperages and temperatures.

HHO burns clean. The by-product of its combustion is water. There is no Carbon Monoxide or other greenhouse gasses being produced. It is a truly clean fuel. Since water is already present in your fossil fuel, burning HHO in such a low concentration will not damage your engine. Your engine is still being lubricated by the fossil fuel present inside the cylinders. HHO simply ‘boosts’ the fossil fuel burning giving you a better, cleaner burn. Older vehicle which are converted to Hydrogen, will benefit and in most cases pass the state inspection where it would otherwise fail due to poor combustion. What about my warranty?

HHO burns clean. The by-product of this combustion within your vehicle's engine is water. Since the by-product is H2O, there is no Carbon Monoxide or other greenhouse gasses being produced. It is a truly clean fuel. Since water is already present in your fossil fuel, burning HHO in such a low concentration will not damage your engine. Your engine is still being lubricated by the fossil fuel present inside the cylinders. HHO simply helps your engine burn more efficiently giving you a better, cleaner burn. Older vehicles which are converted, will benefit and in most cases pass the state inspection where it would otherwise fail due to poor combustion.