A zero emission engine, motor, process, or other energy source emits no waste products that pollute the environment or disrupt the

climate Climate is the long-term weather pattern in a region, typically averaged over 30 years. More rigorously, it is the mean and variability of meteorological variables over a time spanning from months to millions of years. Some of the meteoro ...

Zero emission engines

Vehicles and other mobile machinery used for transport (over land, sea, air, rail) and for other uses (agricultural, mobile power generation, etc.) contribute heavily to climate change and pollution, so zero emission engines are an area of active research. These technologies almost in all cases include an

electric motor An electric motor is a machine that converts electrical energy into mechanical energy. Most electric motors operate through the interaction between the motor's magnetic field and electric current in a electromagnetic coil, wire winding to gene ...

powered by an energy source compact enough to be installed in the vehicle. These sources include hydrogen fuel cells, batteries, supercapacitors, and flywheel energy storage devices. In some cases, such as compressed air engines, the engine may be mechanical rather than electrical. This mechanical engine is then powered by a passive energy source like

compressed air Compressed air is air kept under a pressure that is greater than atmospheric pressure. Compressed air in vehicle tires and shock absorbers are commonly used for improved traction and reduced vibration. Compressed air is an important medium for t ...

, or a combustible non-polluting gas like

hydrogen Hydrogen is a chemical element; it has chemical symbol, symbol H and atomic number 1. It is the lightest and abundance of the chemical elements, most abundant chemical element in the universe, constituting about 75% of all baryon, normal matter ...

. The above engines can be used in all vehicles, from cars to boats to propeller airplanes. For boats, energy sources such as nuclear power and solar panels can also be a viable option, in addition to traditional sails and turbosails. A concept like vegetable oil economy produces emissions.

References

* {{cite book , last = Dixon , first = Lloyd , author2=Isaac Porche , author3=Jonathan Kulick , title = Driving Emissions to Zero: Are the Benefits of California's Zero Emission Vehicle Program Worth the Costs? , publisher = RAND Corporation , year = 2002 , isbn = 0-8330-3212-7

External links

A special issue of the ''Journal of Cleaner Production''
that focuses specifically on Zero Emissions Green vehicles Zero-emissions vehicles

Zero emission engines

See also

References

External links