Most fuels for internal combustion engines are liquid. But liquid fuels don't combust till they are vaporized and mixed with air.

Fuel mainly consists of hydrocarbons. Groupings of hydrocarbons, when flowing through a magnetic field, change their orientations of magnetization in a direction opposite to that of the magnetic field. The molecules of hydrocarbon change their configuration. At the same time intermolecular force is considerably reduced or depressed. These mechanisms are believed to help to disperse oil particles which become finely divided. In addition, hydrogen ions in fuel and oxygen ions in air are magnetized to form magnetic domains, which are believed to assist in atomizing fuel into finer particles.

Generally a liquid or gas fuel used for an internal combustion engine is composed of a set of molecules. Each molecule includes a number of atoms, which is composed of a nucleus and electrons orbiting around their nucleus. The molecules have magnetic moments in themselves, and the rotating electrons cause magnetic phenomena. Thus, positive (+) and negative (-) electric charges exist in the fuel's molecules. For this reason, the fuel particles of the negative and positive electric charges are not split into more minute particles. Accordingly, the fuel is not actively interlocked with oxygen during combustion, thereby causing incomplete combustion. To improve the above, the fuel has to be decomposed and ionized. The ionization of the fuel particles is accomplished by the supply of magnetic force from a magnet.

The resultant conditioned fuel/air mixture magnetized in opposite polarities burns more completely, producing higher engine output, better fuel economy, more power and most importantly reduces the amount of hydrocarbons, carbon monoxide and oxides of nitrogen in the exhaust. Another benefit of these devices is that magnetically charged fuel and air molecules with opposite polarities dissolve carbon build-up in carburettor jets, fuel injectors, and combustion chambers, help to clean up the engine and maintain the clean condition.

The magnetic flux density to be imparted to fuel widely varies depending upon fuel, air or steam, and combustion equipment and conditions. In general, the preferred range of magnetic flux density is from 1000 to 3500 Gauss, and the most preferred range is from 1400 to 1800 Gauss when fuel oil is used in combination with conventional heat power boilers. The optimum range will be determined through experimental runs. The field strength is a function of the engine size based on fuel consumption. Ferrite magnets are the most cost effective for treating fuel.

 In the usual automobile gasoline engine, demagnetization usually does not occur even when the oxygen is treated in the air filter section of the engine. However, if the oxygen is put in a South pole magnetic state in the air filter of a Diesel engine, it has been found that the oxygen will be demagnetized to some extent in the blower section and thus the magnetic field strength should be about 13000 Gauss in the air filter section in order to have the oxygen at the proper level when it reaches the combustion chamber.

In achieving a system, which operates effectively, it has been found that magnets need be placed on both the hydrocarbon fuel inlet and the oxygen inlet. Magnetizing only oxygen or fuel fails to achieve the best combustion efficiency. Also, it has been found that the magnets need be particularly oriented to achieve the optimal efficiency.

The oxygen is in the South pole magnetic state as contrasted with a North pole magnetic state since the advantages of the present invention are attained only when the oxygen is caused to be in the South pole magnetic state. Whether the oxygen in the air is in a North Pole or is in a South Pole magnetic state after having passed through a magnetic field can easily be determined by holding an ordinary compass near the conduit through which such oxygen is flowing. If in the desired South Pole magnetic state, the needle of the compass which normally points to the North Pole of the Earth will be deflected toward and point to the conduit containing the oxygen.

The magnets are embedded in a body of non-magnetic material, such as plastic, copper or aluminium, to secure them to the fuel line. No cutting of the fuel line and no hose and clamps are necessary to install this device. Allegedly, these units have been installed without other fuel line or ignition adjustments to treat vehicles failing required emission tests as an inexpensive retrofit accessory to give substantially immediate improvements of up to the order of 80 % reduction in hydrocarbon and carbon monoxide emissions.

 One or more magnets are strapped to the fuel line as close as possible to the carburettor or fuel injectors with only one pole of the magnet or magnets adjacent to or in contact with the fuel line. One or more magnets are strapped to the air intake in such a way as to expose the oxygen to the magnetic field emanating from the pole opposite that of the pole used to expose the fuel.

It is believed that the fuel (South, Red) and oxygen (North, Blue) are oppositely polarized or ionized, with the result that the fuel and oxygen exhibit a stronger attraction to each other with the consequence that there is more efficient and complete bonding to each other during the combustion process.