Fuel-air injection system for internal combustion engines

Claim 1

A FUEL-AIR INJECTION SYSTEM FOR TWO-CYCLE INTERNAL COMBUSTION ENGINES HAVING A CYLINDER, A CRANKCASE, A PISTON RECIPROCABLE IN THE CYLINDER, A CRANKSHAFT IN SAID CRANKCASE, A CONNECTING ROD OPERABLY CONNECTING THE PISTON TO THE CRANKSHAFT, SAID CYLINDER HAVING AN EXHAUST PORT AND ALSO HAVING AN INLET TRANSFER PORT POSITIONED THEREIN TO BE UNCOVERED BY SAID PISTON WHEN THE LATTER APPROACHES ITS INNERMOST LIMIT OF MOVEMENT, SAID CRANKCASE HAVING A FLUID INLET, A CHECK VALVE CONTROLLING SAID INLET PERMITTING FLUID TO FLOW INTO THE CRANKCASE THROUGH SAID INLET BUT PREVENTING OUTFLOW INTO THE CRANKCASE THROUGH LET, A MANUALLY CONTROLLED VALVE CONTROLLING THE FLOW OF FLUID INTO THE CRANKCASE THROUGH SAID INLET, AND AN AIR TRANSFER PASSAGEWAY CONNECTING THE CRANKCASE WITH THE INLET TRANSFER PORT OF THE CYLINDER, COMPRISING: (A) A HOUSING DEFINING A CYLINDERICAL CHAMBER HAVING AN OUTLET PORTION AT THE INNER END, SAID OUTLET PORTION BEING REDUCED DIAMETER AND CONNECTED WITH THE AIR TRANSFER PASSAGEWAY BETWEEN THE CRANKCASE AND THE INLET TRANSFER PORT OF THE CYLINDER, SAID OUTLET BEING ALIGNED WITH THE INLET PORT OF THE CYLINDER, SAID HOUSING ALSO HAVING A PULSE DISC CYLINDER AT THE OUTER END THEREOF; (B) A FUEL NOZZLE WITHIN SAID CHAMBER HAVING ITS INNER END EXTENDING INTO THE OULET PORTION BUT IN SPACED RELATION TO THE WALLS THEREOF, TO THEREBY PROVIDE A RESTRICTION FOR EFFECTING A HIHG VELOCITY AIR JET AT THE DISCHARGE END OF THE SAID FUEL NOZZLE, SAID NOZZLE HAVING A FUEL BORE IN ALIGNMENT WITH SAID OUTLET PORTION AND THE INLET TRANSFER PORT OF THE CYLINDER, THERE BEING A COUNTERBORE AT THE INNER DISCHARGE END OF SAID NOZZLE; (C) A PLUG SECURED IN THE OUTER END PORTION OF SAID COUNTERBORE, SAID PLUG HAVING A CALIBRATED FUEL DISCHARGE ORIFICE THEREIN; (D) A BALL VALVE IN SAID COUNTERBORE ADAPTER TO SEAT ON THE OUTER END OF SAID FUEL CONDUCTING BORE; (E) YIELDING MEANS URGING SAID BALL VALVE INTO SEATING ENGAGEMENT WITH THE DISCHARGE END OF SAID NOZZLE FUEL BORE; (F) MEANS DEFINING A FUEL INLET PASSAGEWAY COMMUNICATING WITH THE NOZZLE BORE INTERMEDIATE THE END THEREOF; (G) A CASING DEFINING A CCOMPRESSED AIR STORAGE CHAMBER HAVING A WALL SPACED FROM THE OUTER END OF SAID HOUSING AND GENERALLY PARALLEL TO THE PLANE OF SAID OUTER END OF THE HOUSING, SAID WALL HAVING A BORE THERETHROUGH IN AXIAL ALIGNMENT WITH THE BORE OF SAID NOZZLE; (H) A PAIR OF PARALLEL, LATERALLY SPACED WALLS DEFINING A RECESS AT THE OUTER SIDE OF SAID CASING WALL; (I) A PLUNGER IN SAID BORE OF THE CASING WALL AND THE BORE OF SAID NOZZLE, THE INNER END OF SAID PLUNGER BEING NORMALLY SPACED OUTWARDLY OF THE JUNTION OF THE FUEL INLET PASSAGEWAY AND THE NOZZLE BORE, THE OUTER END OF SAID PLUNGER HAVING A HEAD THEREON; (J) A PULSE DISC SLIDABLY DISPOSED ON SAID PLUNGER, LEAF SPRING MEANS SECURED TO SAID PLUNGER INWARDLY OF THE PULSE DISC AND INCLUDING A PAIR OF RESILIENT, OPPOSITELY EXTENDING SPRING FINGERS NORMALLY SPACED FROM THE INNER SIDE OF THE PULSE WHEN THE MECHANISM IS AT REST; (K) A STOP MEANS ON SAID PLUNGER OUTWARDLY OF THE PULSE DISC LIMITING OUTWARD MOVEMENT OF THE PULSE DISC ON SAID PLUNGER AND ALSO LIMITING OUTWARD MOVEMENT OF SAID PLUNGER BY ENGAGEMENT WITH THE PORTION OF THE WALL OF SAID CASING PREVENTING SAID PULSE DISC FROM MOVING OUT OF THE PULSE DISC CYLINDER; (L) MEANS ON SAID PLUNGER LIMITING INWARD MOVEMENT OF THE PULSE DISC ON SAID PLUNGER; (M) A WEDGE-SHAPED PLUNGER STOP SLIDABLE IN THE RECESS BETWEEN SAID PARALLEL WALLS, SAID WEDGE-SHAPED PLUNGER STOP HAVING A LONGITUDINALLY EXTENDING SLOT THEREIN IN WHICH THE PLUNGER IS RECEIVED, THE HEAD OF SAID PLUNGER BEING ADAPTED TO ENGAGE SAID PLUNGER STOP WHEN SAID PLUNGER IS ACTUATED INWARDLY, SAID PULSE DISC BEING MOVABLE LONGITUDINALLY INWARDLY BY FLUID PRESSURE IN SAID COMPRESSED AIR STORAGE CHAMBER BEYOND THE INNER END OF SAID PULSE DISC CYLINDER; (N) AND A LIGHT SPRING YIELDINGLY URGING THE PULSE DISC OUTWARDLY.