At present, automobile exhaust emission in some big cities in China is the main source of urban air pollution. Therefore, the development of clean energy vehicles has become an urgent choice. Compressed natural gas (CNG) vehicles are welcomed by all countries because of their low energy consumption and low pollutant emissions, and are internationally recognized as the most ideal alternative energy sources for vehicles. Developing natural gas vehicles is of great significance for solving environmental and energy problems.

First, the development of natural gas vehicles

L, the development of foreign natural gas vehicles

In order to protect the environment and reduce pollution, many governments have promulgated a series of laws and regulations and introduced some encouraging policies to promote the development of gas vehicles, such as formulating stricter emission standards for automobile exhaust and giving preferential policies for funds and taxes in natural gas supply, automobile purchase tax, equipment supply and gas station construction.

In 1992, the American federal government promulgated the Energy Policy Act, which made detailed provisions on tax reduction and exemption for purchasing or refitting alternative fuel vehicles and building filling stations, and also promulgated the tax reduction policy for using natural gas, exempting natural gas companies from automobile fuel sales tax. According to the policies and laws of the federal government, more than 40 states have formulated their own policies and measures to force and encourage the use of clean fuel vehicles such as CNG, which has promoted the development of CNG vehicles and the construction of filling stations. At present, more than 40 countries in the world have fuel.