The invention relates to a rotary piston engine comprising a housing which forms an interior space, two rotary pistons which are arranged in the interior space, an inlet opening for introducing a fluid into the interior space, and an outlet opening for the fluid, which is located in the interior space on a side opposite the inlet opening. Each rotary piston comprises at least two sealing strips and at least two recesses on the outer circumference thereof, wherein the shapes of the recesses and the sealing strips are selected to engage the sealing strips of a respective rotary pistons in the recesses of the respective other rotary piston. In addition, the sealing strips are dimensioned in the radial direction to sealingly contact an inner wall of the housing. The invention also relates to a corresponding method for operating a rotary piston engine.

The invention relates to a rotary piston engine comprising a housing which forms an interior space, two rotary pistons which are arranged in the interior space, an inlet opening for introducing a fluid into the interior space, and an outlet opening for the fluid, which is located in the interior space on a side opposite the inlet opening. Each rotary piston comprises at least two sealing strips and at least two recesses on the outer circumference thereof, wherein the shapes of the recesses and the sealing strips are selected to engage the sealing strips of a respective rotary pistons in the recesses of the respective other rotary piston. In addition, the sealing strips are dimensioned in the radial direction to sealingly contact an inner wall of the housing. The invention also relates to a corresponding method for operating a rotary piston engine.

A rotor assembly has a sealing system for sealing at apexes or faces of the rotor. An apex seal or face seal comprises a compliant member that is configured such that the shape or orientation of the compliant member can change in use in response to a change in the speed of rotation of the rotor, a change in the pressurization across the compliant member, or a change in clearance between the sealing surface and a mounting element to which the compliant member is mounted, to deflect towards or away from the sealing surface.

A rotor assembly has a sealing system for sealing at apexes or faces of the rotor. An apex seal or face seal comprises a compliant member that is configured such that the shape or orientation of the compliant member can change in use in response to a change in the speed of rotation of the rotor, a change in the pressurization across the compliant member, or a change in clearance between the sealing surface and a mounting element to which the compliant member is mounted, to deflect towards or away from the sealing surface.

The invention comprises a rotary engine method and apparatus configured with a self-actuating/self-damping vane system. In the rotary engine apparatus, a set of vanes extend from a rotor to a housing, whereby the rotary engine is divided into expansion chambers. Each of the vanes enclose a stressed band wound at least partially around two or more rollers. Potential energy of the stressed band, which is optionally a smart metal, provides a radially outward force on the vane toward the housing, aiding in seal formation of the vane to the housing.

The invention comprises a rotary engine method and apparatus configured with a self-actuating/self-damping vane system. In the rotary engine apparatus, a set of vanes extend from a rotor to a housing, whereby the rotary engine is divided into expansion chambers. Each of the vanes enclose a stressed band wound at least partially around two or more rollers. Potential energy of the stressed band, which is optionally a smart metal, provides a radially outward force on the vane toward the housing, aiding in seal formation of the vane to the housing.

A pump is formed by a housing (10) having a fluid inlet (11) and a fluid outlet (12) and containing a rotor (15) forming with the housing (10) chambers (17a, 17b) that, on rotation of the rotor (15) by a drive, convey fluid from the inlet (11) to the outlet (12) to pump the fluid. A seal assembly (14) is arranged between the outlet (12) and the inlet (11). The seal assembly (14) includes a membrane (21) that contacts the rotor (15) and a flexible resilient spring member (22, 28, 35, 37, 40) that provides a force urging the membrane (21) against the rotor (15). The spring member (22, 28, 35, 37, 40) thus, on rotation of the rotor (15), moves radially relative to the axis of rotation of the rotor (15) and is arranged to provide a force on the rotor (15) via the membrane (21) that is constant and a minimum to maintain a seal between the rotor (15) and the seal (14) for a given outlet pressure of the pumped fluid.

The invention relates to a rotary piston engine comprising a housing which forms an interior space, two rotary pistons which are arranged in the interior space, an inlet opening for introducing a fluid into the interior space, and an outlet opening for the fluid, which is located in the interior space on a side opposite the inlet opening. Each rotary piston comprises at least two sealing strips and at least two recesses on the outer circumference thereof, wherein the shapes of the recesses and the sealing strips are selected to engage the sealing strips of a respective rotary pistons in the recesses of the respective other rotary piston. In addition, the sealing strips are dimensioned in the radial direction to sealingly contact an inner wall of the housing. The invention also relates to a corresponding method for operating a rotary piston engine.

The invention relates to a rotary piston engine comprising a housing which forms an interior space, two rotary pistons which are arranged in the interior space, an inlet opening for introducing a fluid into the interior space, and an outlet opening for the fluid, which is located in the interior space on a side opposite the inlet opening. Each rotary piston comprises at least two sealing strips and at least two recesses on the outer circumference thereof, wherein the shapes of the recesses and the sealing strips are selected to engage the sealing strips of a respective rotary pistons in the recesses of the respective other rotary piston. In addition, the sealing strips are dimensioned in the radial direction to sealingly contact an inner wall of the housing. The invention also relates to a corresponding method for operating a rotary piston engine.

A housing assembly for a rotary engine, has: a rotor housing having an inner face facing a rotor cavity, a first side and a second side opposite to the first side; a first side housing secured to the first side, and a second side housing secured to the second side, the rotor cavity bounded axially between the first side housing and the second side housing; and a seal received within a groove at an interface between the rotor housing and the first side housing, the groove located outwardly of the inner face and overlapping a peripheral section of the first side housing, the seal having: an elastomeric member compressed between the peripheral section and the rotor housing; and a metallic member disposed inwardly of the elastomeric member, the metallic member in contact with both of the peripheral section of the first side housing and the rotor housing.