Principle of work
The MCD 2E Double Expansion Engine (also known as “Ortuño engine”) is a reciprocating, four different stroke, double row, six cylinder, radial piston engine developed by Dr. Eng. José Ortuño.
Figure 1 shows the curve described by the crank-pin axis and its four different dead centers that lead to four different piston strokes.
Figure 2 shows the piston distance X to the cylinder head during the four cycle strokes.