A vaporizer is mounted in the fuel system that turns the LNG into a gas which may simply be considered low pressure CNG. Generally speaking, these tanks operate at fairly low pressures about psi when compared to CNG.
Sometimes LNG is made locally from utility pipe. Their stations makegallons of LNG per day. Natural gas is lighter than air, dissipates rapidly and is harder to ignite than conventional fuels.
As of the end of 1st quarter Prometheus Energy Group Inc claims to have delivered over million gallons of LNG within the previous 4 years into the industrial market,  and is continuing to add new customers.
The major drawback of LPG is its safety. Commercial on-demand refueling stations are more expensive to operate than LNG stations because of the energy required for compression, the compressor requires times more electrical power, however, slow-fill many hours can be cost-effective with LNG stations [missing citation - the initial liquefaction of natural gas by cooling requires more energy than gas compression].
However, cost monetary, environmental, pre-existing infrastructure of distribution, compression, cooling must be taken into account. Ram currently is the only pickup truck manufacturer with a truly CNG factory-installed bi-fuel system available in the U.
A properly designed high-horsepower engine can leverage this extremely high pressure energy dense gaseous fuel source to create a higher energy density air-fuel mixture than can be efficiently created with a CNG powered engine.
However, the range of prices and quality of conversion vary enormously.
As compared to LNG, it requires no chilling and thus less energyor problems associated with extreme cold such as frostbite. For engines between 7 and 20 liters either option is recommended. Natural gas does not auto-ignite at pressures and temperatures relevant to traditional gasoline and diesel engine design, thus providing more flexibility in the design of a natural gas engine.
LNG as an auto fuel[ edit ] LNG, or liquified natural gas, is natural gas that has been cooled to a point that it is a cryogenic liquid. These containers are not typically temperature controlled, but are allowed to stay at local ambient temperature.
It may also contain heavier gaseous hydrocarbons such as ethane C 2 H 6propane C 3 H 8 and butane C 4 H 10as well as other gases, in varying amounts. Refueling equipment, fuel cost, pumps, tanks, hazards, capital costs are all different. It has unique properties that make it relatively safe compared to other fuels, unlike liquid fuels, which puddle on the ground when there is a leak or spill.
Advantages over gasoline and diesel[ edit ] LNG — and especially CNG — tends to corrode and wear the parts of an engine less rapidly than gasoline.
It is the same fuel that you use to heat your home, cook your food, and dry your clothes. Because LNG boils at approximately C, using a simple heat exchanger a small amount of LNG can be converted to its gaseous form at extremely high pressure with the use of little or no mechanical energy.
With a compressed natural gas CNG engine, the mixing of the fuel and the air is more effective since gases typically mix well in a short period of time, but at typical CNG compression pressures the fuel itself is less energy dense than gasoline or diesel thus the end result is a lower energy dense air-fuel mixture.
Chemical composition and energy content[ edit ] Chemical composition[ edit ] The primary component of natural gas is methane C H 4the shortest and lightest hydrocarbon molecule. The ignition temperature of natural gas is 1, degrees Fahrenheit compared to about degrees Fahrenheit for gasoline, making it more difficult to ignite.
However, an increasing number of vehicles worldwide are being manufactured to run on CNG. The Westport HDMI2  fuel system is an example of a high-pressure direct injection technology that does not require a turbocharger if teamed with appropriate LNG heat exchanger technology.
There is generally less wasted fuel. Storage temperatures may vary due to varying composition and storage pressure. As a consequence of the low temperatures, vacuum insulated storage tanks typically made of stainless steel are used to hold LNG.
The compressed natural gas CNG tanks are located underneath the body in the rear. Learn more about alternative fuels training programs. The original ISX G engines incorporated a turbocharger to enhance the air-fuel energy density.The latest Tweets from NextGenVideojuegos (@NGV_News).
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NGVAmerica is the national voice for the natural gas vehicle industry. A natural gas vehicle (NGV) is an alternative fuel vehicle that uses compressed natural gas (CNG) or liquefied natural gas Methane as a gaseous fuel is safer than Hydrogen due to its lower flammability, Ford's approach is to offer a bi-fuel prep kit as a factory option, and then have the customer choose an authorized partner to install.
NGV Benefits Proven and Reliable – nearly 15 million NGVs are in use worldwide, with more thanin the U.S. Fuel Savings – The U.S. is. For more information on NGV safety, codes and standards applicable to NGVs and fueling equipment, and more, please visit these websites: NGVAmerica, the national trade association dedicated to the development of growing a sustainable American market for vehicles powered by natural gas, and.Download