The cylinder is the power-producing element of the steam engine powering a steam locomotive. The cylinder is made pressure-tight with end covers and a piston; a valve distributes the steam to the ends
The 'motion' on the left-hand side of 60163 Tornado. The black casting to the left houses the cylinder, in which slides the piston; the piston rod is immediately above the wheel.
French 2-2-2 locomotive with nearly horizontal cylinders, 1844
A NYC switching locomotive with outside valves driven by inside valve gear (Howden, Boys' Book of Locomotives, 1907)
The cylinders on a Shay locomotive.
In an engine, the cylinder is the space in which a piston travels.
Cylinder (locomotive)
…The cylinder is the power-producing element of the steam engine powering a steam locomotive. The cylinder is made pressure-tight with end covers and a piston; a valve distributes the steam to the ends of the cylinder. Cylinders were initially cast iron, but…
PSA TU engine block with wet liners.