Pressure actuated fuel injector

Claim 1

A COMPRESSION EXCITED FUEL INJECTOR FOR AN INTERNAL COMBUSTION ENGINE HAVING A COMBUSTION CHAMBER WITH A WORKING PISTON THEREIN, SAID INJECTOR COMPRISING A HOUSING, A PLUNGER MOVABLE WITH RESPECT TO SAID HOUSING, A FUEL INTAKE MANIFOLD SEALABLY CONNECTED TO SAID HOUSING AND SAID PLUNGER AND EXTENDING THEREBETWEEN, AN INTAKE VALVE EXTENDING BETWEEN AND NORMALLY SEATED AGAINST SAID HOUSING AND SAID PLUNGER, A DISCHARGE VALVE EXTENDING BETWEEN AND NORMALLY SEATED AGAINST SAID HOUSING AND SAID PLUNGER, SAID INTAKE AND DISCHARGE VALVES IN CONJUNCTION WITH SAID HOUSING AND PLUNGER DEFINING A VARIABLE DISPLACEMENT PUMP CHAMBER, AND MEANS FOR NORMALLY BIASING SAID PLUNGER TO AN INITIAL POSITION WITH RESPECT TO SAID HOUSING THEREBY TO DEFINE A MINIMUM VOLUME FOR SAID PUMP CHAMBER, SAID INTAKE VALVE BEING OPERABLE IN RESPONSE TO A PREDETERMINED FUEL PRESSURE IN SAID MANIFOLD TO ADMIT FUEL INTO SAID PUMP CHAMBER TO INCREASE THE VOLUME THEREOF RELATIVE TO SAID MINIMUM, SAID DISCHARGE VALVE BEING OPERABLE UPON MOVEMENT OF SAID PLUNGER TOWARDS SAID INITIAL POSITION AS THE WORKING PISTON IN THE ENGINE COMBUSTION CHAMBER MOVES ON A COMPRESSION STROKE.