A composite intake system and method of operating a rotary engine with variable intake manifold is provided. The system includes two switching valves in a secondary intake switching tube to change the intake method. When the rotary engine works under low speed conditions, it adopts the long intake manifold and the side-intake mode. When the rotary engine works under medium and high speed conditions, it uses the short intake manifold and the composite-intake mode. When the rotary engine works under ultra high speed conditions, it takes the short intake manifold and the peripheral-intake mode.

A composite intake system and method of operating a rotary engine with variable intake manifold is provided. The system includes two switching valves in a secondary intake switching tube to change the intake method. When the rotary engine works under low speed conditions, it adopts the long intake manifold and the side-intake mode. When the rotary engine works under medium and high speed conditions, it uses the short intake manifold and the composite-intake mode. When the rotary engine works under ultra high speed conditions, it takes the short intake manifold and the peripheral-intake mode.

Disclosed is a rotary engine, comprising a stator and a rotor rotatably connected thereto. A stator holder with an annular recessed variable track guide groove is on each end of the stator. A sidewall, close to the rotor, of the stator is provided with an arc-shaped combustible gas groove, a combustible gas inlet, a ring-shape groove, a combustion chamber, a decompression device and an exhaust gas outlet. A compression-resistant element is provided in the ring-shape groove. The rotor is provided with a combustible gas piston chamber having a combustible gas piston, a slider slot having slider, and gas exchange channels. The sliders on the same generating line on the rotor and the combustible gas piston are connected fixedly to the same sliding rod in a sliding rod groove, and the two ends of the sliding rod extend into the annular recessed variable track guide groove of the corresponding stator holder.

A rotary engine including at least two pilot subchambers each in parallel fluid communication with the internal cavity, so that each pilot subchamber is in fluid communication with the combustion chambers as the rotor rotates. Each of the at least two pilot subchambers in fluid communication with a corresponding pilot fuel injector. At least one ignition source is configured for igniting fuel in the pilot subchambers. A compound engine assembly and a method of combusting fuel in a rotary engine are also discussed.

A rotary internal combustion engine includes outer and inner housings defining an enclosure therebetween, and first and second side housings disposed on opposite sides of the outer housing. The inner housing is rotatable relative to the outer housing and at least two barriers divide the enclosure into a combustion chamber and an exhaust chamber. At least one barrier is rotatable relative to at least one other barrier and at least one barrier comprises a retractable barrier mounted along a pivot axis and is pivotable between an extended position and a retracted position. An intake port, exhaust port, and ignition source are also provided. The rotary internal combustion engine further includes a cylindrical stationary shaft disposed inside the inner housing and oriented substantially coaxially with the inner housing. The stationary shaft has an intake opening configured to be intermittently fluidly connected with the intake port.

A displacement type rotary machine with non-rotatable housing, two mutually movable co-axial rotors includes an outer rotor movable along housing inside wall, and an inner rotor movable relative to an inner circumferential face of the outer rotor. The outer rotor has radially inwardly directed wings. The inner rotor has a hub with radially outwardly directed wings. Each inner rotor wing is movable between a pair of the outer rotor wings to create chambers. A free end of the inner rotor wings is movable adjacent a curved inside wall of the outer rotor. A free end of the outer rotor wings is movable adjacent the hub. Both rotors are movable adjacent a first cover on the housing. The inner rotor is in movable adjacent a second cover on the outer rotor. Controlling gears control movement of the rotors, the gears including elliptical gearwheels and circular gearwheels.

The invention relates to mechanical engineering. The present device for obtaining mechanical work from a non-thermal energy source comprises a cylindrical housing, a rotor, a vacuum chamber, movable elements, and systems for removal and supply of a working fluid. The rotor is provided with blades and is fastened to the power shaft, disposed inside the housing. The chamber is formed by the outside surface of the bladed rotor and the inside surface of the housing. The movable elements are mounted in diametric opposition inside the housing of the device and divide the chamber into equal parts. The shaft and blades of the rotor are hollow. The inlet ports and outlet ports are provided in surfaces of the rotor blades. Or outlet ports are provided in the housing. The technical result is an increase in the output, efficiency and environmental friendliness of the device, together with a simplified design.

The invention relates to mechanical engineering. The present device for obtaining mechanical work from a non-thermal energy source comprises a cylindrical housing, a rotor, a vacuum chamber, movable elements, and systems for removal and supply of a working fluid. The rotor is provided with blades and is fastened to the power shaft, disposed inside the housing. The chamber is formed by the outside surface of the bladed rotor and the inside surface of the housing. The movable elements are mounted in diametric opposition inside the housing of the device and divide the chamber into equal parts. The shaft and blades of the rotor are hollow. The inlet ports and outlet ports are provided in surfaces of the rotor blades. Or outlet ports are provided in the housing. The technical result is an increase in the output, efficiency and environmental friendliness of the device, together with a simplified design.

A variable volume chamber device is disclosed. The chambers may be defined by the space between four pivotally connected vanes contained within two side plates. The vanes may be connected so as to create a sealed interior chamber that may be used as a combustion chamber in an internal combustion engine, or as a pumping chamber in a pump or compressor. The four vane assembly may also form additional variable volume chambers between the vanes and a surrounding structure. The plurality of variable volume chambers may be interconnected to progressively act on a working fluid.

An engine assembly including an internal combustion engine configured to be received in an engine compartment and a heat exchanger having a first conduit fluidly connected to a fluid circuitry of the engine and a second conduit fluidly connecting an interior of the engine compartment to its environment. The first conduit is in heat exchange relationship with the second conduit. The assembly further includes a forced air system operable in use to provide an air flow from the environment to the outlet via the second conduit of the heat exchanger and the engine compartment. The assembly further includes a selector valve configurable to selectively fluidly connect an air intake of the internal combustion engine with the interior of the engine compartment in a first valve position and with the environment in a second valve position. A method for supplying air to an internal combustion engine is also discussed.