Tank locomotive

A tank locomotive is a type of steam locomotive, in which the water and fuel inventories are carried in tanks on the locomotive itself.

The water resources are mostly located in lateral tanks or in the frame, which is designed as a water tank. The coal or fuel reserves are located in a growing container before or behind the cab.

The alternative to Tender locomotive construction is the locomotive with attached Tender. Tender locomotives were preferably used for short distances, so as not to unnecessarily consume energy for the transport of supplies. Another advantage of the most tender locomotives is that in both directions, they have approximately the same good running properties and therefore at the end points of the route does not need to be turned.

The disadvantage is that caused by the consumption of the entrained inventories decreases the frictional load and thus the traction. Frequently tender locomotives were such as that shown in the image DB Class 66, so designed so that the greatest possible amount of inventories is located above the rear bogie, the relief on the tensile force has less influence. For this reason, arranged behind the dome wheels bogies (ie axis sequences as 1'C2 ' and 1'D2 ') in tank locomotives often than with a Tender locomotives. Particularly pronounced this phenomenon was with the Engerth locomotives.

Both small shunting locomotives and heavy machinery for freight train operation, express locomotives Streamlined and machines with Mallet engine were carried out in tender locomotive construction.