Natural gas heavy truck refers to a gas-fueled heavy-duty vehicle that uses natural gas as fuel (CNG is compressed natural gas; LNG is liquefied natural gas). According to different fuel use conditions, it can be divided into single-fuel natural gas vehicles (engines use only CNG or LNG as fuel), dual-fuel natural gas vehicles (using diesel + natural gas, or using gasoline + natural gas as a fuel vehicle). The most widely used at present is a single-fuel natural gas vehicle. As a clean fuel vehicle, its mature technology has the following advantages:
1, low fuel costs, saving the use of costs. Compared with diesel vehicles, natural gas vehicles have a fuel consumption savings of approximately 30-50% due to the different natural gas prices in different regions. Take towing vehicle loading as an example, savings are around RMB 1 per kilometer, and annual mileage is calculated at 100,000 km. , You can recover your input costs in about a year.
2, low temperature resistance. There is no waxing problem of diesel fuel, and no heating of the oil circuit is required. The engine has good low temperature startability.
3, good security. The ignition temperature of LNG is 650°C, which is much higher than the 260°C flash point of diesel fuel. The explosion limit of liquid natural gas is 4.7-15%, while that of diesel fuel is 0.5-4.1%. The density of LNG after vaporization is only air. About half of them leaked and floated slightly.
4, reduce maintenance costs. Due to the full combustion of LNG, there is no heavy hydrocarbon, no carbon deposition, no dilution of lubricants, reduced part wear, reduced maintenance costs, and extended engine life.
5, environmental protection. It can easily achieve Euro IV emissions even higher emission standards, reduce carbon dioxide emissions by 90%, and reduce emissions by 80%.
In addition, according to national regulations, natural gas vehicles do not require the detection of fuel consumption, that is, they can be put into operation without reporting fuel consumption. Due to the nature of natural gas, users do not have to worry about such problems as the stolen fuel of diesel vehicles.
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