High pressure radial piston engine - has floating piston shoes and increased piston bearing area

摘要

The radial piston engine has working chambers with fluid actuated pistons. The piston shoes have central support. The piston shoes enter at least partly into the rotor. The pressures in the radial piston engine are increased by increasing the bearing surface area between the piston and piston shoe and the bearing surface area extends over the whole piston cross section, and the machine has a high volumetric capacity. The piston shoe (1) is arranged between the piston guide (33), rotor (9) and end faces (14) and it has a central radial support (8) between radial steps (23) of the rotor (9). The piston shoe has two dimensional play relative to its adjacent components and this freedom of movement is provided by clearances. The piston shoe is able to float between the rotor and piston.