초록 ▼

An improved rotary engine system has two stationary buffer seals located at the two ends of the minor axis of a rotor housing that divide the rotor housing into two separate volumes. A first volume is an intake and compression volume and a second volume downstream to the first volume is an expansion

An improved rotary engine system has two stationary buffer seals located at the two ends of the minor axis of a rotor housing that divide the rotor housing into two separate volumes. A first volume is an intake and compression volume and a second volume downstream to the first volume is an expansion and exhaust volume. A rotating combustion chamber flow control device (CCFC) is synchronized with a rotor, for receiving compressed fluid from the first volume, for receiving fuel injected by a fuel injector located within a corresponding CCFC, for igniting and burning an air-fuel mixture, to allow combustion products to expand in the second volume, and for transferring the combustion products to the second volume. In one embodiment, the CCFC is synchronized with two longitudinal shafts fitted at centers of first and second housings, respectively, in each of which are located a pair of side by side rotors.

대표청구항 ▼

1. A rotary engine, comprising: a) rotor means enclosed by housing means including an inlet port and an exhaust port, to define a first intake and compression volume, and a second expansion and exhaust volume downstream to said first volume;b) at least one concentrically rotating, continuous combust

1. A rotary engine, comprising: a) rotor means enclosed by housing means including an inlet port and an exhaust port, to define a first intake and compression volume, and a second expansion and exhaust volume downstream to said first volume;b) at least one concentrically rotating, continuous combustion type constant-volume combustion chamber flow control device (CCFC) synchronized with said rotor means, receiving compressed fluid from said first volume, receiving fuel injected therein by means of a fuel injector located within a corresponding CCFC, igniting and burning an air-fuel mixture, to allow combustion products to expand in said second volume, and transferring said combustion products to said second volume; andc) a flow regulating unit that responds to an air flow sensing system. 2. The rotary engine according to claim 1, wherein the housing comprises a first housing for first and second side by side rotors which defines the first volume, and a second housing for third and fourth side by side rotors which defines and the second volume and is constructed in tandem with said first housing, the engine further comprising: a) two longitudinal shafts, axially fitted with bearings at the centers of said first and second housings, respectively; andb) two geared wheels that engages said two shafts so as to rotate in synchronized timed motion,wherein the CCFC is synchronized with said two shafts and with said first, second, third and fourth rotors. 3. The rotary engine according to claim 2, wherein each pair of first and second or third and fourth rotors are fixed to a corresponding shaft, one rotor of each of said pairs being located within a different volume of the corresponding housing at an inclination of approximately 180° with respect to the other rotor of each of said pairs, and each of said pairs of rotors synchronously rotating about a corresponding shaft. 4. The rotary engine according to claim 2, wherein a centrifugal band seal is used to seal a region between a large-radius peripheral contour to an opposite small-radius contour of said each rotor. 5. The rotary engine according to claim 2, wherein the CCFC is disposed within a central housing and said rotor rotates about the same shaft about which a pair of rotors rotates. 6. The rotary engine according to claim 2, wherein fuel is injected directly into the second volume. 7. A Wankel type rotary engine, comprising: a) at least one Wankel type rotor being enclosed by a corresponding rotor housing which includes an inlet port and an exhaust port;b) three apex seals provided to said at least one Wankel type rotor;c) two buffer seals located at two ends, respectively, of a minor axis of said corresponding housing which divide said corresponding housing into a first intake and compression volume, and a second expansion and exhaust volume downstream to said first volume; andd) at least one concentrically rotating combustion chamber flow control device (CCFC) synchronized with said at least one Wankel type rotor, receiving compressed fluid from said first volume, receiving fuel injected therein by means of a fuel injector located within a corresponding CCFC, igniting and burning an air-fuel mixture, to allow combustion products to expand in said second volume, and transferring said combustion products to said second volume;wherein said at least one CCFC has a rotor that is spaced from, and is independently operable with respect to, said at least one Wankel type rotor;wherein said at least one Wankel type rotor is operable to produce fluid pressures characteristic of a compression ignition engine independently of a K factor;wherein each of said three apex seals is passable by sliding contact over each one of said two buffer seals, andwherein each of said two buffer seals is configured to constantly contact a contour of said at least one Wankel type rotor. 8. The rotary engine according to claim 7, wherein the fuel injector injecting fuel into the compressed air of the CCFC is located in a downstream portion of the CCFC, or is located in an upstream portion of the CCFC, and wherein the air-fuel mixture is rotated and delivered to the second volume. 9. The rotary engine according to claim 8, further comprising an ignition spark plug located at the downstream portion of the CCFC. 10. The rotary engine according to claim 7, wherein the CCFC is a continuous combustion type. 11. The rotary engine according to claim 10, further comprising an engine shaft operating compressor. 12. The rotary engine according to claim 10, wherein fuel is also injected directly into the second volume. 13. The rotary engine according to claim 7, wherein the CCFC comprises a plurality of combustion chambers, from which combustion products are scavengeable by a residual compression stroke pressure through a corresponding outlet port of each of said combustion chambers following sufficient rotation of said plurality of combustion chambers such that the corresponding outlet port of said each of the combustion chambers is in communication with an expansion port of the second volume. 14. The rotary engine according to claim 7, wherein the CCFC is a controlled compression-ratio CCFC which is controllable during an operation of the engine. 15. The rotary engine according to claim 14, wherein the compression ratio is controllable by at least one of a double-wall cam and cam follower of bi-directional operation, a piston that is displaceable by a cam and cam follower roller in one direction and displaceable in the opposite direction by a corresponding set of preloaded springs, and an eccentric shaft, a hub and connecting-rods. 16. The rotary engine according to claim 7, wherein the CCFC is disposed along an outer circumference of the engine, on a top of the engine, or to a side of the engine and is perpendicular to a shaft on which the rotor means is mounted. 17. The rotary engine according to claim 7, wherein the CCFC comprises pistons which are displaceable in a direction parallel to a shaft on which the rotor is mounted. 18. The rotary engine according to claim 7, wherein the CCFC is driven by at least one of a geared wheel transmission, an internally geared wheel transmission, a toothed belt and wheel transmission, and a chain and sprocket wheel transmission. 19. The rotary engine according to claim 7, wherein a CCFC drive shaft is also a power output shaft of the engine. 20. The rotary engine according to claim 7, wherein the CFC is integral with, and disposed within, rotor, and is of a fixed volume type or is of a variable compression-ratio type. 21. The rotary engine according to claim 7, wherein the CCFC comprises two combustion chambers of constant volume or of a variable compression ratio for each rotor bank, the two combustion chambers of said each rotor bank being disposed on opposite sides of the rotor. 22. The rotary engine according to claim 7, wherein the CCFC is of a side pressure eliminating type or of a side pressure reducing type and disposed within said each rotor. 23. The rotary engine according to claim 7, wherein the two buffer seals comprise a bouncing absorbing system comprising at least one of an oil damper, a contact pressure regulator, channeling means formed in a buffer seal housing for equalizing engine fluid pressure acting on the buffer seal, and a combination thereof. 24. The rotary engine according to claim 7, wherein said each of the three apex seals has a guiding path which is inclined towards the rotational direction of the rotor. 25. The rotary engine according to claim 7, further comprising a counterweight mounted within a rotor apex which is connected to said each of the three apex seals by lever arms in order to counterbalance centrifugal forces. 26. The rotary engine according to claim 7, wherein said each of the three apex seals is shaped in such a way that an outer congruence between an apex seal boundary and the at least one Wankel type rotor is beveled. 27. The rotary engine system according to claim 7, wherein the two buffer seals are shaped in a way that an outer congruence between a buffer seal boundary and an internal contour of the housing is beveled. 28. The rotary engine according to claim 7, further comprising at least one component selected from the group consisting of a turbocompressor and an intercooler.