Rotary piston engine

Abstract

A rotary piston engine comprising at least one rotary piston for compressing and/or expanding a working gas in at least one working chamber and a method for compressing and/or expanding a working gas in a rotary piston engine are provided. The rotary piston engine comprises at least one rotary piston with at least one rotatably mounted rotational body and at least one sealing portion that can be moved relative to the rotational body for sealing the at least one working chamber. In the method for compressing and/or expanding a working gas in a rotary piston engine, the working gas is compressed by a rotary piston in a first working chamber and transferred into a second working chamber in order to be ignited, wherein the working gas is supplied with fuel in the second working chamber and/or is further compressed.

1 - 10 . (canceled) 
     
     
         11 . A rotary piston engine for compressing and/or expanding a working gas in at least one working chamber comprising at least one rotary piston with at least one rotatably mounted rotational body and at least one sealing portion that can be moved relative to the at least one rotational body for sealing the at least one working chamber, wherein at least two sealing portions together form a continuous seal and are movable relative to each other while maintaining a continuous seal. 
     
     
         12 . The rotary piston engine according to  claim 11  wherein the at least one rotary piston comprises at least one recess for forming the at least one working chamber. 
     
     
         13 . The rotary piston engine according to  claim 11  wherein the at least one sealing portion is configured such that, during rotation of the at least one rotary piston, the at least one sealing portion is movable due to the centrifugal force, and wherein the at least one sealing portion is due to the centrifugal force spaced from a rotational axle of the at least one rotary piston. 
     
     
         14 . The rotary piston engine according to  claim 11  wherein at least two sealing portions are in an axial direction and/or in a radial direction and/or in a circumferential direction disposed adjacent and/or overlap each other. 
     
     
         15 . The rotary piston engine according to  claim 11  wherein at least two sealing portions together form an enclosed or self-contained seal. 
     
     
         16 . The rotary piston engine according to  claim 11  wherein at least two sealing portions are movable relative to each other while maintaining a closed or self-contained seal. 
     
     
         17 . The rotary piston engine according to  claim 11  wherein at least two sealing portions are identical or symmetrical or complementary to each other. 
     
     
         18 . The rotary piston engine according to  claim 11  wherein at least two sealing portions seal the at least one working chamber completely in an axial direction and/or in a radial direction and/or in a circumferential direction. 
     
     
         19 . The rotary piston engine according to  claim 11  wherein at least two sealing portions are arranged in pairs at opposite axial ends of the at least one rotational body. 
     
     
         20 . The rotary piston engine according to  claim 11  wherein at least two sealing portions are resiliently preloaded or preloadable against each other, and wherein the resilient preload is configured to push apart or press together the sealing portions. 
     
     
         21 . A method for compressing and/or expanding a working gas in a rotary piston engine, the method comprising:
 compressing the working gas by a rotary piston in a first working chamber; and   transferring the working gas into a second working chamber in order to be ignited;   wherein the working gas is in the second working chamber supplied with fuel and/or is further compressed.   
     
     
         22 . The method according to  claim 21 , wherein the method comprises at least one of the following:
 a) the compressed working gas is passed through the rotary piston and/or through a housing of the rotary piston engine;   b) the fuel is injected into the second working chamber prior to and/or during and/or after the further compression;   c) the working gas is in the second working chamber further compressed by at least one reciprocating piston, wherein the reciprocating piston is driven pneumatically and/or hydraulically and/or mechanically by a cam or eccentric shaft coupled to the rotary piston motion, wherein the at least one reciprocating piston and the rotary piston run at the same rotational speed;   d) the working gas is introduced already in a compressed state into the first working chamber, wherein the compression is effected by a turbocharger;   e) the working gas is in the second working chamber made to ignite by being supplied with fuel and/or by further compression;   f) the ignited working gas is passed through the rotary piston and/or through the housing of the rotary piston engine, radially outwardly from the second working chamber into the first working chamber.