IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
|
출원번호 |
US-0017980
(2001-12-13)
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발명자
/ 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
6 인용 특허 :
5 |
초록
▼
An axial piston rotary power device can be configured as a four-cycle and two-cycle internal combustion engine, a compressor, a pump, a fluid-driven motor or an expander. The device includes an external stator housing, an internal axial stator and a rotary cylindrical block attached to an end shaft
An axial piston rotary power device can be configured as a four-cycle and two-cycle internal combustion engine, a compressor, a pump, a fluid-driven motor or an expander. The device includes an external stator housing, an internal axial stator and a rotary cylindrical block attached to an end shaft that can rotate within the annular enclosure formed by the two stators. The cylindrical block contains a plurality of cylindrical cavities arranged as pairs of working cylinders. Each cylindrical cavity encloses a double-acting piston assembly comprising two piston heads connected to a middle portion having a pair of axially spaced apart roller cam followers that make roller contact with a guide cam surface protruding from the inside of the external stator housing. The action of the cam roller followers on the guide cam imparts rotation to the cylindrical block when the piston assemblies reciprocate within their respective bores.
대표청구항
▼
An axial piston rotary power device can be configured as a four-cycle and two-cycle internal combustion engine, a compressor, a pump, a fluid-driven motor or an expander. The device includes an external stator housing, an internal axial stator and a rotary cylindrical block attached to an end shaft
An axial piston rotary power device can be configured as a four-cycle and two-cycle internal combustion engine, a compressor, a pump, a fluid-driven motor or an expander. The device includes an external stator housing, an internal axial stator and a rotary cylindrical block attached to an end shaft that can rotate within the annular enclosure formed by the two stators. The cylindrical block contains a plurality of cylindrical cavities arranged as pairs of working cylinders. Each cylindrical cavity encloses a double-acting piston assembly comprising two piston heads connected to a middle portion having a pair of axially spaced apart roller cam followers that make roller contact with a guide cam surface protruding from the inside of the external stator housing. The action of the cam roller followers on the guide cam imparts rotation to the cylindrical block when the piston assemblies reciprocate within their respective bores. claim 1 wherein the axially undulating guide track surface comprises a portion of two coaxial tubular cylindrical elements, each of the two cylindrical elements fixedly attached to the back plate. 4. The axial piston rotary power device of claim 1 wherein the axially undulating guide track surface is defined by a groove cut into the external stator portion. 5. The axial piston rotary power device of claim 1 wherein the axially undulating guide track surface comprises a first pair of points at which the surface is a maximum distance from the back plate and a second pair of points at which the surface is a minimum distance therefrom; the at least one inlet passageway comprises a first radial inlet port at the first selected axial position, the first radial inlet port communicating exactly once with the first of the two radial end openings in each of the cylinders in the course of each rotation of the block, the at least one inlet passageway further comprising a second radial inlet port at the second selected axial position, the second radial inlet port communicating exactly once with the second of the two radial end openings in each of the cylinders during the course of the each rotation of the block; the at least one exhaust passageway comprises a first exhaust port at the first selected axial position, the first exhaust port communicating with the first of the two radial end openings in each of the cylinders exactly once during each rotation of the block, the at least one exhaust passageway further comprising a second exhaust port at the second selected axial position, the second exhaust port communicating with the second of the two radial end openings in each of the cylinders exactly once during each rotation of the block; the plurality of passageways further comprises two ignition passageways, a first of the ignition passageways comprising a first ignition port at the first selected axial position, the first ignition port communicating with the first of the two radial end openings in each of the cylinders exactly once during each rotation of the block, the second of the ignition passageways comprising a second ignition port at the second selected axial position, the second ignition port communicating with the second of the two radial end openings in each of the cylinders exactly once during each rotation of the block, wherein each of the ignition ports is adapted to receive a respective spark plug; whereby the axial piston rotary power device is adapted to function as a four stroke internal combustion engine. 6. The four stroke internal combustion engine of claim 5 wherein the plurality of passageways comprises four passageways comprising one inlet passageway and one exhaust passageway. 7. The four stroke internal combustion engine of claim 5 wherein the plurality of passageways comprises five passageways comprising one inlet passageway and two exhaust passageways. 8. The four stroke internal combustion engine of claim 5 wherein the plurality of passageways comprises four passageways comprising two inlet passageways and one exhaust passageway. 9. The axial piston rotary power device of claim 1 wherein: the axially undulating guide track surface comprises exactly one point at which the surface is a maximum distance from the back plate and exactly one point at which the surface is a minimum distance therefrom; each working cylinder further comprises two axially spaced apart medial openings, a first of the medial openings in each cylinder communicating with the central cylindrical bore at a third of the selected axial positions, the second of the two medial openings in each cylinder communicating with the central cylindrical bore at a fourth of the selected axial positions; the at least one inlet passageway comprises an air inlet passageway comprising a first radial air inlet port at the first selected axial position, the first radial air inlet port communicating with the first of the two radial end openings in ea ch of the cylinders exactly once during each rotation of the block, the at least one air inlet passageway further comprising a second radial air inlet port at the second selected axial position, the second radial air inlet port communicating with the second of the two radial end openings in each of the cylinders exactly once during each rotation of the block; the at least one exhaust passageway comprises a first exhaust port at the third selected axial position, the first exhaust port communicating with the first of the two medial openings in each of the cylinders exactly once during each rotation of the block, and with a second exhaust port at the fourth selected axial position, the second exhaust port communicating with the second of the two medial openings in each of the cylinders exactly once during each rotation of the block; the plurality of passageways further comprises two fuel injection passageways, a first of the fuel injection passageways comprising a first fuel injection port disposed at the first selected axial position diagonally opposite the first inlet port, the first fuel injection port communicating with the first of the two radial end openings in each of the cylinders exactly once during each rotation of the block, the second of the fuel injection passageways comprising a second fuel injection port disposed at the second selected axial position diagonally opposite the second inlet port, the second fuel injection port communicating with the second of the two radial openings in each of the cylinders exactly once during each rotation of the block; whereby the axial piston rotary power device is adapted to function as a two stroke internal combustion engine. 10. The two stroke internal combustion engine of claim 9 wherein the plurality of passageways comprises four passageways comprising one inlet passageway and one exhaust passageway. 11. The two stroke internal combustion engine of claim 9 wherein the plurality of passageways comprises five passageways comprising one inlet passageway and two exhaust passageways. 12. The two stroke internal combustion engine of claim 9 wherein the plurality of passageways comprises five passageways comprising two inlet passageways and one exhaust passageway. 13. The axial piston rotary power device of claim 1 wherein the axially undulating guide track surface comprises a first pair of points at which the surface is a maximum distance from the back plate and a second pair of points at which the surface is a minimum distance therefrom; the at least one inlet passageway comprises first and second diagonally opposed radial inlet ports at the first selected axial position, the first and second radial inlet ports communicating with the first of the two end openings in each of the cylinders exactly once during each rotation of the block, the at least one inlet passageway further comprising third and fourth diagonally opposed radial inlet ports at the second selected axial position, the third and fourth radial inlet ports communicating with the second of the two radial end openings in each of the cylinders exactly once during each rotation of the block; the at least one exhaust passageway comprises first and second diagonally opposed exhaust ports at the first selected axial position, the first and second exhaust ports communicating with the first of the two radial openings in each of the cylinders exactly once during each rotation of the block, the at least one exhaust passageway further comprising third and fourth diagonally opposed exhaust ports at the second selected axial position, the third and fourth exhaust ports communicating with the second of the two radial openings in each of the cylinders exactly once during each rotation of the block; whereby the axial piston rotary power device is adapted to function as one of a four stroke pump, a four stroke compressor, a four stroke fluid-driven pump, a four stroke fluid-driven compressor and a four stroke fluid-driven moto r. 14. The four stroke rotary power device of claim 13 wherein one of the inlet and exhaust passageways comprises an axial channel and the other of the inlet and the exhaust passageways comprises an annular channel disposed about the axial channel. 15. The four stroke rotary power device of claim 13 wherein the number of passageways comprises five passageways comprising one intake passageway and four exhaust passageways. 16. The four stroke rotary power device of claim 13 wherein the number of passageways comprises five passageways comprising four intake passageways and one exhaust passageway. 17. The axial piston rotary power device of claim 1 wherein the axially undulating guide track surface comprises exactly one point at which the surface is a maximum distance from the back plate and exactly one point at which the surface is a minimum distance therefrom; the at least one inlet passageway comprises a first radial inlet port at the first selected axial position, the first radial inlet port communicating with the first of the two end openings in each of the cylinders exactly once during each rotation of the block, the at least one inlet passageway further comprising a second radial inlet port at the second selected axial position, the second radial inlet port communicating with the second of the two radial end openings in each of the cylinders exactly once during each rotation of the block; the at least one exhaust passageway comprises a first exhaust port at the first selected axial position, the first exhaust port communicating with the first of the two end openings in each of the cylinders exactly once during each rotation of the block, the at least one exhaust passageway further comprising a second exhaust port at the second selected axial position, the second exhaust port communicating with the second of the two radial openings in each of the cylinders exactly once during each rotation of the block; whereby the axial piston rotary power device is adapted to function as one of a two stroke pump, a two stroke compressor, a two stroke fluid-driven pump, a two stroke fluid-driven compressor and a two stroke fluid-driven motor. 18. The two stroke rotary power device of claim 17 wherein one of the inlet and exhaust passageways comprises an axial channel and the other of the inlet and the exhaust passageways comprises an annular channel disposed about the axial channel. 19. The two stroke rotary power device of claim 17 wherein the number of passageways comprises three passageways comprising one inlet passageway and two exhaust passageways. 20. The four stroke rotary power device of claim 17 wherein the number of passageways comprises three passageways comprising two inlet passageways and one exhaust passageway. 21. The rotary power device of claim 1 wherein the cylindrical block comprises a plurality of axially oriented cooling channels, each of the cooling channels communicating with at least one cooling throughhole in the back plate, each of the cooling channels further communicating with at least one cooling throughhole in the front plate. 22. The rotary power device of claim 1 wherein the central stator portion further comprises at least one axial lubrication passageway adapted to supply lubricant fluid to the clearance space between the central stator portion and the block. 23. A four stroke internal combustion engine having an output shaft fixedly attached to a rotatable cylindrical block, wherein the cylindrical block comprises: an outer wall and a central cylindrical bore extending through the block along an axis of the shaft; a selected number of working cylinders parallel to the shaft and disposed at a single radial distance from the axis of the shaft, each of the working cylinders having a separate radially inwardly directed end opening adjacent each of two ends thereof, one of the end openings of each cylinder communicating with the central cylindrical bore at a first selected axial position, the seco nd of the end openings of each cylinder communicating with the central cylindrical bore at a second selected axial position; each of the working cylinders further comprising a respective axial cam follower slot extending outwardly through the outer wall of the cylindrical block; the selected number of pistons, each piston slidably received in a respective one of the selected number of working cylinders; the selected number of pins, each of the pins extending through a respective cam follower slot, each of the pins connecting a respective piston to a respective cam follower; and wherein the engine further comprises: an internal stator portion received in the cylindrical bore of the cylindrical block, the internal stator portion having a plurality of passageways formed therein, each of the passageways comprising a channel parallel to the axis of the shaft, each of the channels communicating with at least one respective radial port formed in the internal stator at one of the selected axial positions, at least one of the plurality of passageways comprising an inlet passageway, a second at least one of the plurality of passageways comprising an exhaust passageway, and two of the passageways comprising ignition passageways comprising respective ignition ports, each of the ignition ports for receiving a spark plug therein; and an axially undulating guide track surface disposed on an external stator portion, the axially undulating guide track surface engaged by each of the cam followers, the axially undulating guide track surface having a first pair of points at which the surface is a maximum axial distance from the first selected axial position and a second pair of points at which the surface is a minimum axial distance from the first selected axial position. 24. The axial piston rotary power device of claim 23 wherein the axially undulating guide track surface comprises a portion of a tubular cylindrical element fixedly attached to the back plate. 25. The axial piston rotary power device of claim 23 wherein the axially undulating guide track surface comprises a portion of two coaxial tubular cylindrical elements, each of the two cylindrical elements fixedly attached to the back plate. 26. The axial piston rotary power device of claim 23 wherein the axially undulating guide track surface is defined by a groove cut into the external stator portion. 27. A two stroke internal combustion engine having an output shaft fixedly attached to a rotatable cylindrical block, wherein the cylindrical block comprises: an outer wall and a central cylindrical bore extending through the block along an axis of the shaft; a selected number of working cylinders parallel to the shaft and disposed at a single radial distance from the axis of the shaft, each of the working cylinders having a separate radially inwardly directed end opening adjacent each of two ends thereof, one of the end openings of each cylinder communicating with the central cylindrical bore at a first selected axial position, the second of the end openings of each cylinder communicating with the central cylindrical bore at a second selected axial position; each of the working cylinders further having a separate radially inwardly directed first medial opening communicating with the central cylindrical bore at a third selected axial position disposed between the first and the second axial positions, the third axial position closer to the first axial position than to the second, each of the working cylinders further having a separate radially inwardly directed second medial opening communicating with the central cylindrical bore at a fourth selected axial position disposed between the first and the second axial positions, the fourth axial position closer to the second axial position than to the first; each of the working cylinders further comprising a respective axial cam follower slot extending outwardly through the outer wall of the cylindrical block; the selected number of pistons, each piston slidably received in a respective one of the selected number of working cylinders; the selected number of pins, each of the pins extending through a respective cam follower slot, each of the pins connecting a respective piston to a respective cam follower; and wherein the engine further comprises: an internal stator portion received in the cylindrical bore of the cylindrical block, the internal stator portion having a plurality of passageways formed therein, each of the passageways comprising a channel parallel to the axis of the shaft, each of the channels communicating with at least one respective radial port formed in the internal stator at one of the selected axial positions, at least one of the plurality of passageways comprising an inlet passageway, a second at least one of the plurality of passageways comprising an exhaust passageway, and two of the plurality of passageways comprising fuel injection passageways; and an axially undulating guide track surface disposed on an external stator portion, the axially undulating guide track surface engaged by each of the cam followers, the axially undulating guide track surface having exactly one point at which the surface is a maximum axial distance from the first selected axial position and a exactly one point at which the surface is a minimum axial distance from the first selected axial position. 28. The axial piston rotary power device of claim 27 wherein the axially undulating guide track surface comprises a portion of a tubular cylindrical element fixedly attached to the back plate. 29. The axial piston rotary power device of claim 27 wherein the axially undulating guide track surface comprises a portion of two coaxial tubular cylindrical elements, each of the two cylindrical elements fixedly attached to the back plate. 30. The axial piston rotary power device of claim 27 wherein the axially undulating guide track surface is defined by a groove cut into the external stator portion. 31. A pump having an input shaft fixedly attached to a rotatable cylindrical block, wherein the cylindrical block comprises: an outer wall and a central cylindrical bore extending through the block along an axis of the shaft; a selected number of working cylinders parallel to the shaft and disposed at a single radial distance from the axis of the shaft, each of the working cylinders having a separate radially inwardly directed end opening adjacent each of two ends thereof, one of the end openings of each cylinder communicating with the central cylindrical bore at a first selected axial position, the second of the end openings of each cylinder communicating with the central cylindrical bore at a second selected axial position; each of the working cylinders further comprising a respective axial cam follower slot extending outwardly through the outer wall of the cylindrical block; the selected number of pistons, each piston slidably received in a respective one of the selected number of working cylinders; the selected number of pins, each of the pins extending through a respective cam follower slot, each of the pins connecting a respective piston to a respective cam follower; and wherein the pump further comprises: an internal stator portion received in the cylindrical bore of the cylindrical block, the internal stator portion having a plurality of passageways formed therein, each of the passageways comprising a channel parallel to the axis of the shaft, each of the channels communicating with at least one respective radial port formed in the internal stator at one of the selected axial positions, at least one of the plurality of passageways comprising an inlet passageway, a second at least one of the plurality of passageways comprising an exhaust passageway; and an axially undulating guide track surface disposed on an external stator portion, the axially undulating guide track surface engaged by each of the cam followers, the axially undulating guide track surface having a selected number, equal to or greater than one, of points at which the surface is a maximum axial distance from the first selected axial position and the selected number of points at which the surface is a minimum axial distance from the first selected axial position. second ledge formed on the inside surface of said second housing member below said first ledge and vertically aligned therewith, and c. a third ledge formed on the inside surface of said second housing member, horizontally aligned with the second ledge, and defining the second position of the
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