Reciprocating heat engine with hot cylinder head and cold cylinder
OwnerVianney Rabhiinventor
Life of this patent
Estimating the term…
Abstract
Reciprocating heat engine with hot cylinder head and cold cylinder includes a cooled cylinder casing which receives a cold cylinder covered with a lubricant film and in which a piston connected to power transmission moves in translation to form a variable-volume hot chamber with a hot cylinder head which is held applied but free to expand on the cylinder casing by cylinder head applying unit, while a hot crown is interposed between the chamber and the piston and is held applied but free to expand on the piston by crown applying unit, the piston including a cooled piston sealing ring which has a piston sealing unit.
Claims41
A reciprocating heat engine with a hot cylinder head and a cold cylinder comprising a cooled cylinder casing in which is arranged at least one cold cylinder in which a piston oriented and/or located by piston guide means can move in translation, said piston being directly or indirectly connected by power transmission means housed in a transmission casing to at least one rotary or reciprocating power output shaft, comprising:
- lubricating means which form a lubricant film which is interposed between the cold cylinder and the piston;
- cylinder casing cooling means which cool the cooled cylinder casing so as to maintain all or part of the internal surface of the cold cylinder at a sufficiently low temperature such that the lubricant film does not age prematurely, coke, or burn;
- at least one hot cylinder head, the operating temperature of which is significantly higher than that of the cooled cylinder casing that the at least one hot cylinder head covers so as to form, with the piston, a hot chamber of variable-volume that contains a working gas, said cylinder head being both held applied against the cooled cylinder casing by cylinder head applying means that leave said cylinder head free to expand relative to said cylinder casing, and also located relative to said cylinder casing by cylinder head centering means;
- at least one piston sealing ring arranged at the periphery of the piston, said ring comprising piston sealing means which form a seal between the piston and the cold cylinder, and said ring being cooled by sealing ring cooling means;
- at least one hot crown which is interposed between the variable-volume hot chamber and the piston and the operating temperature of which is significantly higher than that of the cooled cylinder casing, said crown being held applied against the piston by crown applying means which leave said crown free to expand relative to said piston, and, said crown being located relative to said piston by crown centering means.
Dependencies are inferred from the claim text.