Economic advantages of locomotive's fuel replacement With natural gas in the country's rail fleet

Considering the vast resources of natural gas and the reduction of oil resources and because of environmental and economical reasons, the use of natural gas has increased as an energy provider for the different parts of the industry.Rail transportation industry has greatly disregarded the utilization of natural gas.This article attempts to explain the advantages of the use of natural gas in locomotives and to discuss the existing technological issues. One of the fuels that can be used in locomotives is the liquefied natural gas (LNG).The article also discusses the technical issues related to the fuel replacement methods.