Rajan Wilcox
Water-fuelled cars have been the subject of fascination and controversy for decades, with many proposed designs relying on electrolysis to separate water into hydrogen and oxygen, which is then recombined to release energy. However, the laws of thermodynamics dictate that the energy required to separate these elements will always be equal to or greater than the amount of energy released, making it an inefficient process. Despite this, several individuals and companies have claimed to have developed water-fuelled cars, including Stanley Meyer, Hydrogen Technology Applications, and Genepax. While these claims have sparked interest in alternative energy research, they have also been met with skepticism and, in some cases, allegations of fraud.
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What You'll Learn
Hydrogen fuel enhancement
While hydrogen fuel enhancement has been touted as a way to increase fuel efficiency and reduce emissions, there is skepticism and controversy surrounding its effectiveness and legality. Some consumer watch groups have reported negative results, noting that the electrolytic cell drains current from a car's electrical system, leading to a net power reduction. Additionally, it requires more energy to separate hydrogen from oxygen than can be gained from burning the resulting hydrogen, violating the first and second laws of thermodynamics.
Despite these concerns, some companies have developed products claiming to enhance fuel efficiency through hydrogen injection. One such product is the "Ultimate Cell" by Ultimate Power, which promises a 30% increase in fuel efficiency and the ability to use lower-quality gasoline. However, automotive experts have expressed doubt about such devices, noting that car manufacturers would have already incorporated them if they were truly effective.
Furthermore, modifying a vehicle with hydrogen fuel enhancement products may cause it to fail mandatory anti-smog controls and violate emissions control regulations, leading to significant fines. While laboratory tests by Environment Canada in 2004 found no improvement in engine efficiency or fuel economy, Arvin Meritor, a Tier 1 automotive technology supplier, has experimented with plasma reformer technology. This technology aims to use hydrogen to enhance engine combustion efficiency and reduce emissions, claiming a potential 20-30% increase in engine thermal efficiency.
In conclusion, while hydrogen fuel enhancement holds promise as a cleaner and more efficient fuel source, more research and development are needed to substantiate claims and address technical and regulatory challenges.
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Steam cars
The first steam-powered vehicle was built in 1679 by Ferdinand Verbiest, a Flemish Jesuit in China. This vehicle was a toy for the Chinese Emperor and was not intended to carry passengers. It is believed to be the first-ever engine-powered vehicle. The first working self-propelled steam-powered vehicle was built by French inventor Nicolas-Joseph Cugnot in 1769, with another version in 1771 for use by the French Army. Cugnot's steam wagon was unwieldy and inefficient, with an operating time of only about 15 minutes, and was not approved for military use.
In the 1860s, a small steam carriage that ran under its own power was exhibited at circuses and fairs, where people paid to see it driven. Sylvester Roper, the inventor, built at least seven steam-powered carriages and two steam-powered motorcycles. However, these were considered curiosities rather than practical vehicles.
By the 1890s, several different American companies were manufacturing steam cars. These cars were fast, cheap, and relatively uncomplicated. However, they had drawbacks, such as high fuel and water consumption, and heavy boilers that made the cars quite heavy. Starting a steam car could also take up to 30 minutes, as the burner had to be brought to operating temperature.
The search for renewable energy sources has led to a resurgence of interest in using steam technology to power road vehicles. Steam cars have the advantage of being able to be configured for very low emissions of carbon monoxide, nitrogen oxides, and unburned carbon in the exhaust, thus avoiding pollution. However, the technical challenges of the boiler, its weight, and the need to supply feedwater remain significant obstacles.
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Electric cars charged with hydroelectricity
Although there have been numerous claims of cars that run on water, these have been discredited and found to be pseudoscience or frauds. Water-fuelled cars that rely on electrolysis to separate water into hydrogen and oxygen cannot produce net energy because the energy required to separate the elements will always be equal to or greater than the amount of energy released.
Hydro-electric cars are a more realistic prospect. These cars use liquid hydrogen as fuel, combined with oxygen in a fuel cell to produce electricity and power the engine. The concept of hydro-electric cars is quite new, but the history of electric vehicles dates back to the early 19th century when Robert Anderson built the first electric car in 1839. A taxicab that ran on electric power was introduced in England in 1886, and in 1888, a Germany-based electrical company, Immisch & Company, built a four-seat passenger car powered by a 1-horsepower motor and a 24-cell battery.
Hydro-electric cars have several advantages over traditional gasoline-powered vehicles. Firstly, they are more environmentally friendly as they do not emit greenhouse gases, only water droplets. Secondly, they are just as efficient as gasoline-powered cars. However, there are also some disadvantages to hydro-electric car technology. The large-scale use of hydrogen for cars would require a very large initial investment, and there are currently only a limited number of gas stations in the United States that provide hydrogen fuel. Additionally, the current methods of hydrogen generation using fossil fuels, coal, nuclear power, and oil produce a large amount of greenhouse gases, which indirectly contributes to air pollution.
Hydro-electric cars should not be confused with hydrogen-powered cars, which use hydrogen's energy inside an internal combustion engine to produce power. Hydrogen-powered cars can also be considered "green" as they produce water as exhaust and do not emit greenhouse gases.
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Water electrolysis
The process of water electrolysis involves using electricity to split water into its constituent parts. This can be done using a variety of energy sources, such as electricity from the home or on-board car battery, solar panels, or windmills. The resulting hydrogen can then be injected into the engine's combustion process, where it burns along with gasoline to produce energy. This process is claimed to make the gasoline burn cleaner and more completely, improving the engine's efficiency.
However, experts have disputed the efficiency of this system, as the energy used in the electrolysis process is greater than the amount of energy produced by the resulting hydrogen. Additionally, according to the laws of thermodynamics, the energy required to separate the elements of water will always be equal to the amount of energy released, making it impossible to produce net energy through this process.
Despite these challenges, some individuals and companies have claimed to have developed water-fuelled cars. For example, in 2008, Thushara Priyamal Edirisinghe claimed to have driven a water-fuelled car about 190 miles on just 3 litres of water. Similarly, Agha Waqar Ahmad claimed in 2012 to have invented a water-fuelled car by installing a "water kit" that used electrolysis to convert water into "HHO" or oxyhydrogen. However, these claims have often been met with skepticism and, in some cases, allegations of fraud.
While water electrolysis may not be a viable method for powering cars exclusively with water, it can still play a role in the development of hydrogen-powered vehicles. Hydrogen fuel cell cars are gaining traction, and water electrolysis can be used to produce hydrogen fuel for these vehicles. Additionally, hydrogen can be combined with conventional fuels to improve fuel economy and reduce emissions.
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Hydrogen fuel cells
While there have been claims of cars that run on water, these have been deemed fraudulent or unviable. However, hydrogen fuel cells, which use water in a different way, are a viable alternative to traditional fuel sources.
The hydrogen used in these vehicles is stored in carbon-fibre high-pressure tanks, which are refilled at hydrogen fuelling stations. Hydrogen fuel cells are happiest at a steady power output, which makes them suitable for backup power use. However, the power demands in an average car vary, so a high-voltage low-capacity battery is added to supply supplemental power for short periods of intense acceleration.
The Toyota Mirai, the best-selling hydrogen car in the US, is rated at 90 kW (120 horsepower). However, this is not enough to accelerate onto a fast-moving highway, so Toyota includes a battery to provide extra power. The Mirai's hydrogen fuel tanks have been rigorously tested and proven to meet Global Technical Regulation No. 13.
While hydrogen fuel cells are a rare alternative to traditional fuel sources, they are a zero-emissions option that only produces water vapour. As of mid-2022, there were 17,000 or fewer hydrogen-powered vehicles on US roads, all of them in California, the only state with a network of retail hydrogen fuelling stations.
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Frequently asked questions
Water-fuelled cars have been the subject of numerous international patents and news articles. However, the claims for these devices have been found to be pseudoscience and some were tied to investment frauds. According to the currently accepted laws of physics, there is no way to extract chemical energy from water alone. Water-powered cars would need to use more energy to split water molecules and isolate hydrogen and oxygen than they would get back from burning them.
One method is to use water injection to cool the combustion chambers of engines by adding water to the incoming fuel-air mixture, allowing for greater compression ratios and reduced engine knocking. Another is to use hydrogen fuel enhancement, where a mixture of hydrogen and conventional hydrocarbon fuel is burned in an internal combustion engine to improve fuel economy or reduce emissions.
In 1996, an Ohio court ruled Stanley Meyer's "Water Powered Car" project as fraudulent. In 2008, Japanese company Genepax unveiled a car it claimed ran on only water and air, but it did not disclose the technology behind it. In 2002, the firm Hydrogen Technology Applications patented an electrolyser design and claimed to be able to run a vehicle exclusively on water, but it no longer makes this claim.
