Rotary piston combustion apparatus

Claim 1

AN INTERNAL COMBUSTION ENGINE COMPRISING, IN COMBINATION, A HOUSING; A PISTON WITHIN SAID HOUSING; SAID HOUSING AND PISTON CONJOINTLY DEFINING PLURAL WORKING SPACES CYCLICALLY VARIABLE IN VOLUME BY RELATIVE ROTATIONAL MOVEMENT OF SAID HOUSING AND PISTION TO FIRST EXPAND AND THEN CONTRACT TWICE DURING EACH CYCLE; MEANS PROVIDING A RESPECTIVE EVAPORATION CHAMBER FOR EACH WORKING SPACE, EACH EVAPORATION CHAMBER BEING IN CONSTANT COMMUNICATION WITH ITS RESPECTIVE WORKING SPACE; MEANS INTRODUCING FUEL INTO EACH EVAPORATION CHAMBER, DURING THE FIRST EXPANSION OF ITS ASSOCIATED WORKING SPACE, AND DEPOSITING THE FUEL ON THE CHAMBER WALL TO EVAPORATE; MEANS INTRODUCING COMBUSTION AIR INTO SAID WORKING SPACES, DURING THE FIRST EXPANSION THEREOF, FOR COMPRESSION THEREIN, WITH FORCING OF SOME AIR INTO THE ASSOCIATED EVAPORATION CHAMBER FOR MIXTURE,WITH THE FUEL DEPOSITED AND EVAPORATED IN THE LATTER, FOR COMPRESSION OF SAID AIR AND FUEL-AIR MIXTURE, DURING THE FIRST CONTRACTION OF THE ASSOCIATED WORKING SPACE, TO A PRESSURE LESS THAN THAT EFFECTING SELF-INGNITION OF THE FUEL-AIR MIXTURE; AND EXTERNAL IGNITION MEANS OPERABLE TO IGNITE THE FULE-AIR MIXTURE IN EACH EVAPORATION CHAMBER, JUST BEFORE THE SECOND EXPANSION OF THE ASSOCIATED WORKING SPACE, FOR INJECTING A BURNING MIXTURE INTO THE ASSOCIATED WORKING SPACE FOR SUBSTANTIALLY COMPLETE COMBUSTION OF SAID MIXTURE BY THE REMAINDER OF THE AIR IN THE LATTER; SAID COMPLETE COMBUSTION EFFECTING THE SECOND EXPANSION OF THE ASSOCIATED WORKING SPACE.