Steam Engine Piston Diagram. The resultant turning moment diagram is the sum of the turning moment diagrams for the three cylinders. The high pressure steam presses the piston backward driving the engine wheels around one half turn.
The working parts of james watts double acting engine 1866. The following diagram shows the major components of a piston steam engine. Schematic view of a newcomen steam engine early 19th century.
Atmospheric engine used atmospheric pressure and steam to alternately push a piston enabling a pumping action to take place.
Period cut away diagram of a triple expansion steam engine installation circa 1918. An example of a typical indicator diagram is shown below which also illustrates the four phases of the cylinder cycle. It may be noted that the first cylinder is the high pressure cylinder second cylinder is the intermediate cylinder and the third. Piston 1 12 inches diameter.