Abstract

The hydraulic pump (1) with radial pistons (2) comprises a rotor (3) provided with a plurality of radial bores housing pistons (2) that are each provided with a slide block (20) engaging a cam surface (40) on a cam body (4), which block is attached to the stator (5) of the pump, which in turn defines a sealed chamber (5) acting as a tank. Each slide block (20) has two planar side surfaces (200) engageable with the two side surfaces (41) of the cam body (4), as well as two supporting and sliding lips (201) engaging the cam surface. The notable feature of the pump is that at least one of the two side surfaces (200) of the slide block (20) is arranged on a compensating wedge (210) urged against the corresponding side surface (41) of the cam body with a controlled force. In addition, the wedge (210) has a discharge groove (214).

IPC Classes  ?

• F01B 13/00 - Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion
• F01B 13/06 - Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion with more than one cylinder in star arrangement
• F04B 1/107 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders
• F04B 1/04 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement

Abstract

The heat engine concerned comprises a cylinder block in which a cylindrical borehole is formed, said borehole containing two coaxially mounted rotors penetrating thereinto, one rotor (3) rotating continuously and the other intermittently. Together with the cylindrical borehole, said rotors define two working chambers in which a gaseous mixture forms according to an appropriate thermodynamic cycle. The sealing of the chambers is ensured by the segmentation created by sealing barriers mounted on the two rotors. At least the continuously moving rotor (3) comprises at least one pressurised oil circuit especially for ensuring the oiling, by means of oilers (22), of the segmentation (11, 12) associated with the continuously moving rotor (3) and the segmentation associated with the intermittently moving rotor.

IPC Classes  ?

• F01C 1/063 - Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them
• F01C 21/04 - Lubrication
• F01M 1/08 - Lubricating systems characterised by the provision therein of lubricant-jetting means

Abstract

The heat engine concerned comprises two coaxial rotors, that is a continuously rotating rotor and an intermittently moving rotor. Said two rotors comprise sealing barriers. Each sealing barrier (11, 12) of the continuously moving rotor has two lateral parts (15) in an arc of circle and at least one rectilinear part (17) extending from one lateral part to the other. The parts in an arc of circle (15) of the sealing barriers (11, 12) of the continuously moving rotor are associated with sealing compartmenting means.

IPC Classes  ?

• F01C 1/063 - Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them
• F01C 19/10 - Sealings for working fluids between radially and axially movable parts
• F01C 19/04 - Radially-movable sealings for working fluids of rigid material

Abstract

A heat machine which can be used especially as a heat engine comprises a cylinder block (1) in which a cylindrical borehole (2) is machined, in which two rotors are mounted in an interpenetrating manner, said rotors forming, with the borehole, at least one working chamber into which a gaseous mixture enters according to a thermodynamic cycle, said gaseous mixture being introduced into the chamber through a drilled supply passage (11) associated with a supply system comprising a rotary valve (14) for alternately closing and opening the drilled passage (11) in accordance with the phases of the thermodynamic cycle. An element (20) is provided for regulating the section for the movement of gases into the drilled supply passage, said element (20) being positionable as required according to whether the drilled supply passage (11) is completely closed, completely open, or partially blocked. The engine comprises a primary exhaust system for evacuating burned gas. It can also comprise a cooling air supply system, and a secondary exhaust system for said air. Said various supply, exhaust and air introduction systems form a system for managing gaseous flows enabling the simultaneous implementation of the functions for cooling by ventilation, air compression for potential supercharging, and separation of gases in order to carry out a post-treatment.

IPC Classes  ?

• F01C 1/063 - Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents with coaxially-mounted members having continuously-changing circumferential spacing between them
• F01C 21/18 - Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
• F01C 20/14 - Control of, monitoring of, or safety arrangements for, machines or engines characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using rotating valves