Fuel delivery valve and injection apparatus employing same

Claim 2

IN A FUEL INJECTION SYSTEM SUBJECT TO REBOUNDNG PRESSURE WAVE FOLLOWING INJECTION, AND INCLUDING NOZZLE MEANS TO DELIVER THE OUTPUT AND A PUMP CHAMER TO SUPPLY THE INPUT OF FUEL THERETO, AND TOGETHER HAVING AN INTERCONNECTING CAVITY WITH OPENING MEANS THEREIN, THE METHOD OF CONTROLLING POST-INJECTION FUEL FLOW BEGINNING WHEN AT LEAST ONE BUT NOT ALL OPENING MEANS ARE OPEN COMPRISING: CLOSING THE OPEN OPENING MEANS IN SAID CAVITY; DRAWING A VOID IN SAID CAVITY BY ENLARGING THE INTERNAL VOLUME THEREOF AT THE LOCATION OF ONE CLOSED OPENING MEANS, WHILE MAINTAINING, AT CONSTANT VOLUME, THE FUEL WHICH IS IMMEDIATELY AVAILABLE AS INPUT TO THE NOZZLE MEANS AND WHICH IS IN THE PATH OF THE REBOUND WAVE; AND AT LEAST PARTIALLY REFILLING THE VOID BY TEMPORARILY OPENING ONE OPENING MEANS AND CONTROLLABLY COMMUNICATING THEREINTO THE PEAK PRESSURE OF SAID REBOUNDING WAVE SO AS TO DISSIPATE SAME TO THE MAXIMUM OPERATING LEVEL DESIRED.

Claim 3

A FLUID INJECTION SYSTEM INCLUDING AN INJECTION NOZZLE FOR FUELING AN INTERNAL COMBUSTION ENGINE SAID SYSTEM FURTHER INCLUDING: PUMPING MEANS WITH A PUMP CHAMBER FOR SUPPLYLING FLUID TO THE INJECTION NOZZLE; MEANS FORMING A FLUID DELIVERY LINE INTERCONNECTING THE PUMP CHAMBER AND THE NOZZLE; AND AN ASSEMBLY OF PRIMARY AND SECONDARY VALVES CONNECTED IN THE FLUID LINE, THE PRIMARY VALVE HAVING GUIDING BORE MEANS THEREFOR IN THE LINE WHEREIN THE VALVE IS GUIDED TO OPEN THE BORE AND TO SHUT OFF THE BORE WHILE CURRENTLY ENLARGING THE INTERNAL VOLUME OF THE LINE, SAID PRIMARY VALVE HAVING A CONCENTRIC FLOW CAVITY THEREIN PRESENTING SEPARATE VALVE SEATS AT OPPOSITE ENDS; ONE COAXIAL SECONDARY VALVE WITHIN, AND ON THE VALVE SEAT AT ONE END OF, THE FLOW CAVITY IN THE PRIMARY VALVE, SAID SECONDARY VALVE UNSEATING IN THE DIRECTTION AWAY FROM THE PUMP CHAMBER OR RETRACTING IN THE DIRECTION THEREOF AS TO ENLARGE THE INTERNAL VOLUME OF THE FLOW CAVITY; AND ONE COAXIAL SECONDARY VALVE WITHIN, AND ON THE VALVE SEAT AT THE OPPOSITE END OF, THE FLOW CAVITY IN THE PRIMARY VALVE, AND UNSEATING IN THE DIRECTION OF THE PUMP CHAMBER.

Claim 4

A FLUID INJECTION SYSTEM INCLUDING AN INJECTION NOZZLE FOR FUELING AN INTERNAL COMBUSTION ENGINE SAID SYSTEM FURTHER INCLUDING: PUMPING MEANS WITH A PUMP CHAMBER FOR SUPPLYLING FLUID TO THE INJECTION NOZZLE; MEANS FORMING A FLUID DELIVERY LINE INTERCONNECTING THE PUMP CHAMBER AND THE NOZZLE; AND AN ASSEMBLY OF PRIMARY AND SECONDARY VALVES CONNECTED IN THE FLUID LINE, THE PRIMARY VALVE HAVING GUIDING BORE MEANS THEREFOR IN THE LINE WHEREIN THE VALVE IS GUIDED TO OPEN THE BORE AND TO SHUT OFF THE BORE WHILE CURRENTLY ENLARGING THE INTERNAL VOLUME OF THE LINE, SAID PRIMARY VALVE HAVING A CONCENTRIC FLOW CAVITY THEREIN PRESENTING SEPARATE VALVE SEATS AT OPPOSITE ENDS; ONE COAXIAL SECONDARY VALVE WITHIN, AND ON THE VALVE SEAT AT ONE END OF, THE FLOW CAVITY IN THE PRIMARY VALVE, SAID SECONDARY VALVE UNSEATING IN THE DIRECTTION AWAY FROM THE PUMP CHAMBER OR RETRACTING IN THE DIRECTION THEREOF AS TO ENLARGE THE INTERNAL VOLUME OF THE FLOW CAVITY; AND ONE COAXIAL SECONDARY VALVE WITHIN, AND ON THE VALVE SEAT AT THE OPPOSITE END OF, THE FLOW CAVITY IN THE PRIMARY VALVE, AND UNSEATING IN THE DIRECTION OF THE PUMP CHAMBER.