SINGLE-SHAFT DUAL EXPANSION INTERNAL COMBUSTION ENGINE

摘要

A single-shaft dual expansion internal combustion engine includes an engine block, a cylinder head, a single crankshaft, a control shaft and first, second and third multi-link connecting rod assemblies. First and second power cylinders and an expander cylinder are formed in the engine block. First and second power pistons are moveable in the first and second power cylinders and are connected to respective first and second crankpins of the crankshaft. An expander piston is moveable in the expander cylinder and is connected to a third crankpin of the crankshaft. First and second multi-link connecting rod assemblies are coupled to first and second swing arms of the control shaft. A third multi-link connecting rod assembly is coupled to a third swing arm of the control shaft.

主权项

1. A single-shaft dual expansion internal combustion engine, comprising:
an engine block, a cylinder head, a single crankshaft, a control shaft and first, second and third multi-link connecting rod assemblies; first and second power cylinders and an expander cylinder being formed in the engine block; first and second power pistons being moveable in the first and second power cylinders, respectively, and being connected via the respective first and second multi-link connecting rod assemblies to respective first and second crankpins of the crankshaft; an expander piston being moveable in the expander cylinder and being connected via the third multi-link connecting rod assembly to a third crankpin of the crankshaft; and the first and second multi-link connecting rod assemblies being coupled to fourth pivot pins of respective first and second swing arms that are attached to the control shaft, and the third multi-link connecting rod assembly being attached to a fifth pivot pin of a third swing arm that is attached to the control shaft; wherein the third swing arm attaches to the control shaft at a position that is rotated 180 degrees about a rotational axis of the control shaft from an attaching location of the first and second swing arms.