A rotor assembly for a rotary internal combustion engine is provided. The rotor assembly includes a rotor having a radial groove defined radially in a peripheral surface of the rotor. The groove has a depth and an intermediate shoulder at an intermediate depth. The groove has a first width therealong that is narrower than an intermediate width at the shoulder. An apex seal is received in the groove and protrudes from the peripheral face of the rotor. The apex seal is configured to move radially between a first position and a second position outward of the first position. A biasing member biases the apex seal toward the second position. A platform is disposed in the groove between the apex seal and the biasing member and has a width greater than the first width.

A rotor assembly for a rotary internal combustion engine is provided. The rotor assembly includes a rotor having a radial groove defined radially in a peripheral surface of the rotor. The groove has a depth and an intermediate shoulder at an intermediate depth. The groove has a first width therealong that is narrower than an intermediate width at the shoulder. An apex seal is received in the groove and protrudes from the peripheral face of the rotor. The apex seal is configured to move radially between a first position and a second position outward of the first position. A biasing member biases the apex seal toward the second position. A platform is disposed in the groove between the apex seal and the biasing member and has a width greater than the first width.

A rotary internal combustion engine has: a rotor; a housing circumscribing a rotor cavity, the rotor received within the rotor cavity, the housing having a peripheral wall and a side housing assembly secured to the peripheral wall, the side housing assembly having plates located at spaced apart ends of the peripheral wall, the plates defining seal running surfaces in sealing engagement with opposed end faces of the rotor, the plates made of silicon carbide.

A rotary internal combustion engine has: a rotor; a housing circumscribing a rotor cavity, the rotor received within the rotor cavity, the housing having a peripheral wall and a side housing assembly secured to the peripheral wall, the side housing assembly having plates located at spaced apart ends of the peripheral wall, the plates defining seal running surfaces in sealing engagement with opposed end faces of the rotor, the plates made of silicon carbide.

A continuously variable turbine includes a case assembly with a case body defining a chamber, a rotor assembly positioned in the chamber, and a pair of valve assemblies. The rotor assembly includes a ring piston and a rotor body positioned within the ring piston. The rotor body is connected to a shaft, and the rotor body rotates concentrically about an axis extending through the shaft while the ring piston rotates eccentrically about the axis. Each valve assembly is positioned outside of the ring piston relative to the rotor assembly and includes a valve body and a seal component attached to the valve body. Each seal component has a surface with a curvature that matches the outer curvature of the ring piston to form a continuous surface seal between the seal component and the ring piston as the ring piston rotates eccentrically about the axis. The position of the continuous surface seals in the chamber defining a first sub-chamber and a second sub-chamber between the surface seals. The case body includes an intake port and an exhaust port for each sub-chamber.

A continuously variable turbine includes a case assembly with a case body defining a chamber, a rotor assembly positioned in the chamber, and a pair of valve assemblies. The rotor assembly includes a ring piston and a rotor body positioned within the ring piston. The rotor body is connected to a shaft, and the rotor body rotates concentrically about an axis extending through the shaft while the ring piston rotates eccentrically about the axis. Each valve assembly is positioned outside of the ring piston relative to the rotor assembly and includes a valve body and a seal component attached to the valve body. Each seal component has a surface with a curvature that matches the outer curvature of the ring piston to form a continuous surface seal between the seal component and the ring piston as the ring piston rotates eccentrically about the axis. The position of the continuous surface seals in the chamber defining a first sub-chamber and a second sub-chamber between the surface seals. The case body includes an intake port and an exhaust port for each sub-chamber.

The invention relates to the engines area, in particular to an internal combustion engine (ICE) which can be used on water, air and land transport vehicles. The six-stroke rotary-vane internal combustion engine comprising a stator with inlet and outlet ports, holes for spark plugs and the working chambers of air-fuel intake and compression, alternating with working chambers of expansion and removing of the combustion products; a cylindrical rotor rigidly fixed to a shaft and having longitudinal grooves in which vanes are placed, with combustion chambers made on the cylindrical surface of the rotor between the grooves; side walls; front and rear bearing shields the side walls of all working chambers of the engine and composite prismatic parts are placed in grooves made in the end surfaces of the rotor, the prismatic parts at their end surfaces are pressed by springs to the adjacent vanes and by their side edges are pressed against the side walls of the working chambers. The achieved effect consists in providing an engine with completely sealing of the working zone preventing as leaks of air-fluid mixture beyond the working zone as well as inter-chamber leaks.

A rotor can comprise a body having arcuate voids each presenting away from a rotation axis and, for each void, a vane. The vane is mounted to the body for pivotal movement between retracted and extended positions; is adapted to sweep the void in the manner in which a piston sweeps a cylinder during movement between the positions; and terminates in a tip. A stator defines the rotation axis; and has an annular surface which, in use, is swept by the tips during rotation of the body. The surface is positioned such that, in each rotation, each vane cycles between its extended and retracted positions. A sealing arrangement defines a pair of ports and, in combination with the rotor and stator, defines, in use, chambers that increase in volume when in communication with one of the ports and that decrease in volume when in communication with the other of the ports.

A tip seal for scroll wraps in a scroll compressor is provided. The tip seal may include surface features to form a tortuous flow path in a seal groove of a scroll wrap. The surface features can help form one or more contraction and/or expansion areas in the tortuous flow path. The tortuous flow path can help provide resistance to fluid flow and help reduce leakage through the seal groove.

Electricity generators are provided that can include: members having opposing bases that include chambers to facilitate the conversion of source energy to mechanical energy with one of the members rotating in relation to another of the members and a housing about the rotating member. Generator components can be operably engaged to the housing and rotating member to generate electricity. Methods for generating electricity are also provided. The methods can include: rotating a first cylindrical member in relation to a fixed second member about a center rod along a shared axis within a housing; and generating electricity between conductive components along both the sidewalls of the first cylindrical member and the housing.