ENGINE WITH PISTON THAT OVERSHOOTS CYLINDER WALL EXHAUST PORT

摘要

A linear reciprocating engine may include a cylinder having first and second combustion chambers at opposing ends, first and second cylinder heads at an end of the first and second combustion chambers, respectively, and a double-faced piston slidably mounted within the cylinder. The engine may further include an exhaust port located in a peripheral cylinder wall and at least one combustion gas inlet in a location other than the peripheral cylinder wall. The combustion gas inlet and the exhaust port may be configured to cooperate such that combustion gases introduced through the inlet are evacuated from the cylinder through the exhaust port. The double-faced piston may have an axial length from one face to an opposite face of the piston less than or equal to ½ of a distance from at least one of the first cylinder head and the second cylinder head to the exhaust port.

主权项

1. A linear reciprocating engine, comprising:
a cylinder having a first combustion chamber at a first end thereof and a second combustion chamber at an opposing second end thereof, a first cylinder head located at an end of the first combustion chamber; a second cylinder head located at an end of the second combustion chamber; a double-faced piston slidably mounted within the cylinder and configured to move from a first position in a region of the first combustion chamber to a second position in a region of the second combustion chamber; an exhaust port located in a peripheral wall of the cylinder at a generally central region of the cylinder between the first cylinder head and the second cylinder head; at least one combustion gas inlet in a location other than the peripheral cylinder wall, wherein the combustion gas inlet and the exhaust port are configured to cooperate such that combustion gases introduced through the inlet are evacuated from the cylinder through the exhaust port in the peripheral wall; and wherein the double-faced piston has an axial length from one face of the piston to an opposite face of the piston that is less than or equal to ½ of a distance from at least one of the first cylinder head and the second cylinder head to the exhaust port.