5.3. DIESELELECTRIC LOCOMOTIVES

The average fuel requirements for standard U.S. Army locomotives

are listed in table VIII. It shows the oil for dieselelectric

locomotives used in road service in gallons per train mile and that

for switch engines in gallons per hour of operation. Using the

information in the table, the amount of oil required for both road

and switch engines can be computed as explained in the following

subparagraphs.

a. Road engines. Roadengine fuel is based on the number of

trains run daily, the length of the division, and the fuel

consumption rate of the locomotive. To find the fuel required for

dieselelectric road engines, multiply the number of trains run daily

over the division (the train density) by 2 for twoway traffic.

Multiply the result by the length of the division to get the number

of train miles per day for the division. Remember that when more

than one type of road engine is used, the number of train miles for

each type must be computed separately. By continuing this procedure

for each division and totaling the results, you can find the number

of train miles per day for the entire railroad. In table VIII, find

the fuel consumption factor for the particular locomotive you intend

to use, and multiply the total train miles by that factor. The

result is the total gallons of fuel used per day. Then multiply the

gallons per day by 30 to find the amount used per month and, finally,

add 5 percent to the total to allow for contingencies.

As an example, suppose you are going to operate a twodivision

railroad using 0440, 60ton locomotives on both divisions. The

first division is 96 miles long and has a TD of 8, and the second

division is 102 miles long with a TD of 9. Compute the fuel

requirements for the locomotives to operate the railroad as follows: