COMPRESSED NATURAL GAS
Natural gas is an odorless, nontoxic, gaseous mixture of hydrocarbons—predominantly methane (CH4). It accounts for about a quarter of the energy used in the United States.
In recent years, 80% to 90% of the natural gas used in the United States was domestically produced. Most natural gas is drawn from wells or extracted in conjunction with crude oil production.
Two forms of natural gas are used in vehicles: CNG and LNG. Both are clean burning, domestically produced, relatively low priced, and widely available. Because of the gaseous nature of this fuel, when stored onboard a vehicle, it must be in either a compressed gaseous (CNG) or liquefied (LNG) state.
CNG generally creates fewer smog-related tailpipe emissions than gasoline, and can reduce tailpipe GHGs by about 20%.
CNG REPOWER PROGRAM
The CNG Repower Program represents a substantial investment to change our locomotive fleet to CNG and eliminate harmful emission.
The modular CNG onboard storage system on each locomotive, design, includes eleven 5,000 psi Hexagon Lincoln, DOT-approved Type IV cylinders, was engineered to handle switcher locomotive operational loads and meet Federal Railroad Administration (FRA) recommendations and requirements.
Based on the current Indiana Harbor Bely Railroad duty cycle, the onboard system storage of 700 DGE will handle 7 to 10 days of operation before refueling is required.
*The standard diesel tanks on the locomotives are not reduced in size, allowing 100% diesel operation if needed.