A water-fuelled car is an automobile that hypothetically derives its energy directly from water. Water-fuelled cars have been the subject of numerous international patents, newspaper and popular science magazine articles, local television news coverage, and websites. The claims for these devices have been found to be pseudoscience and some were found to be tied to investment frauds. These vehicles may be claimed to produce fuel from water on board with no other energy input, or may be a hybrid claiming to derive some of its energy from water in addition to a conventional source (such as gasoline). There is no way to extract chemical energy from water alone which is consistent with the laws of physics.
What water-fuelled cars are not A water-fuelled car is not any of the following:
Water injection, which is a method for cooling the combustion chambers of engines by adding water to the incoming fuel-air mixture, allowing for greater compression ratios and reduced engine knocking (detonation). The hydrogen car, although it often incorporates some of the same elements. To fuel a hydrogen car from water, electricity is used to generate hydrogen by electrolysis. The resulting hydrogen is an energy carrier that can power a car by reacting with oxygen from the air to create water, either through burning in a combustion engine or catalyzed to produce electricity in a fuel cell. Hydrogen fuel enhancement, where a mixture of hydrogen and conventional hydrocarbon fuel is burned in an internal combustion engine, usually in an attempt to improve fuel economy or reduce emissions. The steam car, which uses water (in both liquid and gaseous forms) as a working fluid, not as a fuel. An electric car charged with or directly powered by hydroelectricity.
Extracting energy from water According to the laws of physics, there is no way to extract chemical energy from water alone. Water itself is highly stable—it was one of the classical elements and contains very strong chemical bonds. Its enthalpy of formation is negative (−68.3 kcal/mol or −285.8 kJ/mol), meaning that energy is required to break those stable bonds, to separate water into its elements, and there are no other compounds of hydrogen and oxygen with more negative enthalpies of formation, meaning that no energy can be released in this manner either. Most proposed water-fuelled cars rely on some form of electrolysis to separate water into hydrogen and oxygen and then recombine them to release energy. However, the first law of thermodynamics guarantees that the energy required to separate the elements will always be equal to the amount of energy released (assuming no losses), so this cannot be used to produce net energy. The second law of thermodynamics further states that the amount of useful energy released this way is necessarily less than the amount of energy input.
Claims of functioning water-fuelled cars
Garrett electrolytic carburetor Charles H. Garrett allegedly demonstrated a water-fuelled car "for several minutes", which was reported on September 8, 1935, in The Dallas Morning News. The car generated hydrogen by electrolysis as can be seen by examining Garrett's patent, issued that same year. This patent includes drawings which show a carburetor similar to an ordinary float-type carburetor but with electrolysis plates in the lower portion, and where the float is used to maintain the level of the water. Garrett's patent fails to identify a new source of energy.
Malcolm Vincent's water powered car In 1973, Malcolm Vincent, of Nelson, New Zealand, was the star of a four-minute newsreel about his claim to have invented an engine powered by water. He had fitted a prototype to a car and said he's driven hundreds of miles at speeds up to 60 miles an hour. Vincent told the reporter that the engine works on a hydraulic principle, using an ordinary electric starter to give it an initial thrust.
Stanley Meyer's water fuel cell
At least as far back as 1980, Stanley Meyer claimed that he had built a dune buggy that ran on water, although he gave inconsistent explanations as to its mode of operation. In some cases, he claimed that he had replaced the spark plugs with a "water splitter", while in other cases it was claimed to rely on a "fuel cell" that split the water into hydrogen and oxygen. The "fuel cell", which he claimed was subjected to an electrical resonance, would split the water mist into hydrogen and oxygen gas, which would then be combusted back into water vapour in a conventional internal combustion engine to produce net energy. Meyer's claims were never independently verified, and in an Ohio court in 1996 he was found guilty of "gross and egregious fraud". He died of an aneurysm in 1998, although conspiracy theories claim that he was poisoned.
Dennis Klein In 2002, the firm Hydrogen Technology Applications patented an electrolyser design and trademarked the term "Aquygen" to refer to the hydrogen oxygen gas mixture produced by the device. Originally developed as an alternative to oxyacetylene welding, the company claimed to be able to run a vehicle exclusively on water, via the production of "Aquygen", and invoked an unproven state of matter called "magnegases" and a discredited theory about magnecules to explain their results. Company founder Dennis Klein claimed to be in negotiations with a major US auto manufacturer and that the US government wanted to produce Hummers that used his technology. At present, the company no longer claims it can run a car exclusively on water, and is instead marketing "Aquygen" production as a technique to increase fuel efficiency, thus making it hydrogen fuel enhancement rather than a water-fuelled car.
Genesis World Energy (GWE) Also in 2002, Genesis World Energy announced a market ready device which would extract energy from water by separating the hydrogen and oxygen and then recombining them. In 2003, the company announced that this technology had been adapted to power automobiles. The company collected over $2.5 million from investors, but none of their devices were ever brought to market. In 2006, Patrick Kelly, the owner of Genesis World Energy was sentenced in New Jersey to five years in prison for theft and ordered to pay $400,000 in restitution.
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