There are multiple answers to this question and the science is not absolute. The subject matter also suffers chronically with the phenomenon of “Luddite Technophobe Evangelism.” However the results speak for themselves and fleet managers are beginning to appreciate the technology for its fuel saving, power, and emission attributes. HHO is best utilised when added as a gas though the engines inlet manifold to either diesel or petrol. With 7 to 10 litres per minute of HHO we are seeing a 15% to 25% fuel improvement. HHO should be seen as a supplemental fuel and is often described as carrier or as a combustion stimulant.
Principle
An electrical power source is connected to two electrodes, or two plates (typically made from inert metal such as platinum or stainless steel) which are placed in the water. Hydrogen will appear at the cathode (the negatively charged electrode, where electrons enter the water), and oxygen will appear at the anode (the positively charged electrode). Assuming ideal faradaic efficiency, the amount of hydrogen generated is twice the number of moles of oxygen, and both are proportional to the total electrical charge conducted by the solution.
Pure water has an electrical conductivity about one millionth that of seawater so an electrolyte is added to the water as an electro catalysts.
Hydrogen is the most abundant of the chemical elements, constituting roughly 75% of the universe’s elemental mass.
Hydrogen is less flammable than petrol. The self-ignition temperature of hydrogen is 550° Celsius. Petrol varies from 228-501° Celsius, depending on the grade.
Hydrogen disperses quickly. Being the lightest element (fifteen 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.
There is, of course, the decision to be made as to ‘what engine?’ Should it be petrol or diesel for instance? In fact we use propane engines for testing as they are built for gas and the electronics are better suited.

Some good reasons why you need a HHO generator for your vehicle
1. Fuel Efficiency
HHO is known to be at least 3 times more potent than petrol, supplementing it and improving its combustion; thus producing more power output. HHO or Brown’s gas generator can improve your fuel efficiency dramatically, boosting its mileage.
2. Small investment goes a long way
For a small amount of money you pay for the generator kit, you get all your money’s worth in the long run. As an HHO generator for your car works only on water and very little electricity from the vehicles battery, its initial price is the only investment that goes into it. These costs will be paid off with a good ROI.
3. Perfectly safe for you and your passengers
HHO generator system is absolutely safe. In fact, it is much safer to use than your conventional fuel tank. Actually, HHO is not a new invention. Little electricity is used out of your vehicle battery to separate the water into a gas called HHO or called Browns gas. It burns well and provides a great amount of energy or safe power for your vehicle.
4. No harmful chemicals emitted from this system
With Brown’s gas burning carbon, your vehicle’s emissions become much cleaner and less harmful for the environment. The Brown’s gas produced turns right back into water. The engine takes less fuel and burns more completely so the overall effect is a great reduction in harmful emissions. Definitely this is one of the great benefits of an HHO generator for your car.
5. Reduce engine temperature
The engine of your car enjoys a lower temperature and so protects the environment from global warming while you drive, too. It keeps your vehicle cooler and quieter.
6. Better performance and less trips to the mechanic’s shop for repairs
Vehicle owners who use HHO have testified that with a hydrogen generator vehicle, they experience a smoother drive and gearshifts and a better performance with less flat zones. Not to mention cleaner and longer lasting engine oil.
7. Reduces air pollution and decreases noise pollution too
With improved efficiency, your vehicle will have fewer emissions that pollute the air. Of course, the smoother running of the engine will make the drive quieter, thus noise pollution is reduced.
Roy E. McAlister, P.E., president of the American Hydrogen Association, wrote this in June 1998.
“Finding a solution to the difficult problems of energy sufficiency, environmental damage, and air pollution is imperative. The solution must provide convenience for near-term market acceptance and utilize renewable resources.
Hydrogen burns more rapidly than hydrocarbon fuels because it is smaller and enters combustion reactions at higher velocity, has lower activation energy, and incurs more molecular collisions than heavier molecules. These characteristics make it possible to use mixtures of hydrogen with conventional hydrocarbon fuels such as gasoline, diesel and propane to reduce emissions of unburned hydrocarbons. Transition from fossil fuels to renewable hydrogen by use of mixtures of hydrogen in small quantities with conventional fuels offers significant reductions in exhaust emissions. Using hydrogen as a combustion stimulant makes it possible for other fuels to meet future requirements for lower exhaust emissions in California and an increasing number of additional States.
Mixing hydrogen with hydrocarbon fuels provides combustion stimulation by increasing the rate of molecular-cracking processes in which large hydrocarbons are broken into smaller fragments. Expediting production of smaller molecular fragments is beneficial in increasing the surface-to-volume ratio and consequent exposure to oxygen for completion of the combustion process. Relatively small amount of hydrogen can dramatically increase horsepower and reduce emissions of atmospheric pollutants.”







