Patent ID: 7931006

Claim:
A rotatably two-stroke reciprocating valveless vane internal combustion engine comprising: a cylindrical casing ( 1 ), said cylindrical casing including: a double wall wherein cooling fluid is passing through; longitudinally extending walls ( 2 , 3 ) being unitary or affixed to said cylindrical casing ( 1 ); end plates ( 10 & 11 ); a power output rotary hollow shaft ( 6 ) mounted within said cylindrical casing upon said end plates ( 10 & 11 ) and vanes ( 7 & 8 ); four chambers (a, b, c & d) formed between the vanes ( 7 & 8 ) and the longitudinally extending walls ( 2 & 3 ) inside said cylindrical casing; wherein said vanes ( 7 & 8 ) are unitary or affixed to said power output rotary hollow shaft ( 6 ), and thereby alternatively rotate in back and forth fashion with respect to said longitudinally extending walls in such manner that the volume of said four chambers between said vanes compresses and expands in such sequence that a two-stroke mode of internal combustion engine operates; wherein one or two of said four chambers are sequentially or simultaneously operated in a stroke of intake-and-compression, and then in a reversed stroke of expulsion-and-exhaust; sealing strips ( 9 & 12 ) embodied in grooves and provided between said longitudinally extending walls ( 2 & 3 ) and the power output rotary hollow shaft ( 6 ), and between said vanes ( 7 & 8 ), said cylindrical casing ( 1 ) and said endplates ( 10 & 11 ) respectively; intake ports ( 15 ab , 15 cd , 15 ac & 15 bd ); exhaust ports ( 14 ); wherein each set of said intake and exhaust ports ( 14 , 15 ) includes intake ports and/or injection means ( 15 ) for simultaneously delivering/supplying combustible air-fuel mixture and/or lubricating oil into said working chambers, and exhaust ports ( 14 ) for discharging exhaust gas; wherein each of said intake ports is located on said end plates ( 10 & 11 ) or on said cylindrical casing ( 1 ) close to said longitudinally extending walls ( 2 & 3 ) and is connected via an intake tube to a membrane ( 29 ), which opens and closes said intake tube; wherein each of said exhaust ports is located on said end plates or heads ( 10 or 11 ) or on said cylindrical casing ( 1 ) and is connected via an exhaust tube to a ball ( 30 ) or a conical member ( 31 ), which opens and closes said exhaust tube; additional intake ports ( 15 e ) each one for each supporting chamber, located opposite the intake ports ( 15 ) respectively, connected via tubes to opening and closing members, delivering air only, air/lubricant or air/lubricant/fuel mixture into the supporting chamber; two couple of apertures ( 15 f , 15 g ) connected to external tubes and allowing additional air or air/fuel/lubricant mixture to move one way from the supporting chambers into the working chambers, converting the supporting chambers into superchargers; and a couple of ignition means ( 16 & 17 , 18 & 19 , 16 & 18 or 17 & 19 ) igniting the compressed fuel at maximum compression and firing sequentially or simultaneously into said working chambers at the end of each cycle.