What are the advantage and disadvantage of cng as an automobile fuel?

Answer 1

Advantages:

• Natural gas is significantly less expensive than gasoline. The cost of natural gas can go as low as $0.64 a GGE or Gasoline Gallon Equivalent. In some areas, natural gas costs as low as a third of the cost of gasoline, on average.
• CNG is more eco-friendly than gasoline. Natural gas produces far fewer harmful emissions and hydrocarbons than gasoline.
• Using CNG makes the engine cleaner and more efficient. Unlike gasoline, CNG does not produce harmful carbon deposits when combusted. This results to a cleaner and more efficient engine as well as longer lasting spark plugs and catalytic converters. Oil changes are also minimized because of carbon deposits that contaminate the oil is eliminated.
• CNG is abundant in the US. The country has extensive natural gas resources and a well-established network of pipelines. Switching to CNG can help ease the country's dependence to foreign oil whose price continue to fluctuate.
• CNG makes the engine run quieter. Because of the higher octane levels of natural gas, the engine runs quieter resulting to minimized engine nose.

Disadvantages:

• CNG tanks require storage space. If you convert to CNG, you may need to sacrifice some of the space in the trunk (for cars), truck bed (for pickup trucks) or behind the back seat (for SUVs). The CNG cylinder is also heavy but the added weight of the tank is offset by the reduced weight of a gasoline fuel tank that is near empty.
• CNG Filling stations have limited availability. Some areas in the US still have few filling stations and some places have none at all. CNG conversion is most practical and convenient for people living in areas with easy access to CNG filling stations.