Abstract

Hot air engine comprising - at least one compression cylinder (1) connected to a delivery manifold and an inlet manifold for the input and output from the cylinder (1) of an operating fluid, - at least one expansion cylinder (2) connected to an expansion manifold and to an exhaust manifold for the input and output from the cylinder (2) of an operating fluid, - a transmission system of the movement of the expansion (2) and compression cylinder (1 ) pistons to a system for transforming the movement into electric power. Each cylinder (1, 2) is connected with each manifold through a valve (4), so as to allow or prevent the passage of the operating fluid from the cylinder (1, 2) to the manifold and vice versa. Each valve has a valve seat (40) and a closing element (41), which closing element (41) is mounted rotatably with respect to said valve seat (40), so that the closing condition of the valve corresponds to an overlapping condition of said closing element (41) with respect to said valve seat (40), while the opening condition of said valve corresponds to a non- overlapping or partially overlapping condition of said closing element (41) with respect to said valve seat (40). Furthermore, the said closing element (41) is mounted in a translatable manner with respect to said valve seat (40) in the direction of the manifold and the cylinder, so that a translation of the said closing element (41) allows the passage of the operating fluid even in the overlapping condition of the closing element (41) with the said valve seat (40).

IPC Classes  ?

• F02B 33/20 - Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps with pumping-cylinder axis arranged at an angle to working-cylinder axis, e.g. at an angle of 90°
• F01B 7/02 - Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with oppositely reciprocating pistons
• F02G 1/02 - Hot gas positive-displacement engine plants of open-cycle type
• F01L 7/06 - Rotary or oscillatory slide-valve gear or valve arrangements with disc-type valves
• F02G 1/06 - Controlling
• F01L 3/20 - Shapes or constructions of valve members, not provided for in preceding subgroups of this group
• F01L 5/02 - Slide-valve gear or valve arrangements with other than cylindrical, sleeve, or part-annularly-shaped valves, e.g. with flat-type valves
• F01L 1/32 - Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for rotating lift valves, e.g. to diminish wear