Cars Powered by Water: Real or a Myth?

In summary, the conversation discusses the possibility of running a car on water through separating the hydrogen and burning it, but it is deemed as a perpetual motion claim due to the net loss of energy. Injecting hydrogen into a traditional engine may show increased efficiencies, but it has yet to be proven.
Physics news on Phys.org
  • #3
Wax said:


It is easy to run a car on water: You only need to separate the hydrogen out of the water [electrolysis] and then burn the hydrogen. The problem is that it takes more energy to get the hydrogen out than we get back from it - it is a net loss.

Since this amounts to a perpetual motion claim, it is a closed topic.
https://www.physicsforums.com/showthread.php?t=172340
https://www.physicsforums.com/showthread.php?p=2269439#post2269439

Hydrogen is a great energy carrier, but not an energy source. We have to make the stuff.
 
Last edited by a moderator:
  • #4
There is some evidence that injecting hydrogen into a gasoline or diesel-powered engine [to aid combustion] can result in increased efficiencies that exceed the energy cost of producing the hydrogen, but that has yet to be demonstrated. It is often called hydrogen on demand.

We have a member who has posted some good information here.
https://www.physicsforums.com/showthread.php?t=304690
 
Last edited:

1. What is a car powered by water?

A car powered by water is a vehicle that uses water as its primary source of fuel instead of gasoline or diesel. It typically uses a process called electrolysis to separate water into its two components, hydrogen and oxygen. The hydrogen is then used as fuel to power the car's engine.

2. Is it possible to run a car on water?

Yes, it is possible to run a car on water. However, it is not the water itself that powers the car, but rather the hydrogen extracted from water. This process requires special modifications to the car's engine and fuel system.

3. Are cars powered by water more environmentally friendly?

Cars powered by water are often touted as being more environmentally friendly because they produce zero emissions. However, the process of obtaining hydrogen from water still requires energy, usually from electricity, which may come from non-renewable sources. Additionally, the production and storage of hydrogen can also have environmental impacts.

4. Are there any cars on the market that run on water?

Currently, there are no mass-produced cars that run solely on water. However, there are a few companies that have developed prototype vehicles powered by water. These vehicles are not yet available for purchase and are still undergoing testing and development.

5. Is the concept of a water-powered car just a myth?

The idea of a water-powered car has been around for many years, and there have been various attempts to create such a vehicle. However, it is important to note that the technology is still in its early stages and has not been widely adopted or proven to be a viable alternative to traditional gasoline-powered cars. So while it may not be a complete myth, it is still a developing concept with many hurdles to overcome.

Similar threads

  • Introductory Physics Homework Help
Replies
4
Views
890
  • General Discussion
Replies
9
Views
1K
  • Classical Physics
Replies
4
Views
875
  • Other Physics Topics
Replies
14
Views
3K
  • Topology and Analysis
Replies
4
Views
969
  • General Discussion
Replies
12
Views
2K
  • Special and General Relativity
Replies
6
Views
597
  • General Discussion
Replies
7
Views
6K
Replies
9
Views
1K
Replies
1
Views
1K
Back
Top