Fuel injection pump

• US 3,100,449 A
• Filed: 02/04/1959
• Issued: 08/13/1963
• Est. Priority Date: 02/04/1959
• Status: Expired due to Term

• Current Assignee: Einar S. Dahl
• Original Assignee: Einar S. Dahl
• Inventors: Dahl, Einar S.
• Application Number:
  US03/791,081
• Time in Patent Office: 1,651 Days
• US Class Current: 137/565.28
• CPC Class Codes: F02M 2700/1317 Fuel pumpo for internal combustion engines
• CPC Class Codes: F02M 41/123 characterised by means for varying fuel delivery or injection timing
• CPC Class Codes: F02M 59/00 Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00 , e.g. rotary cylinder-block type of pumps
• CPC Class Codes: F02M 59/22 Varying quantity or timing by adjusting cylinder-head space
• CPC Class Codes: F02M 69/02 Pumps peculiar thereto elastic wall type pumps F02M59/14
• CPC Class Codes: F02M 69/34 with an auxiliary fuel circuit supplying fuel to the engine, e.g. with the fuel pump outlet being directly connected to injection nozzles
• CPC Class Codes: F04B 49/00 Control , e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
• CPC Class Codes: Y10T 137/86123 Distributor part unitary with movable pump part

Claims

1. IN A FUEL INJECTION PUMP FOR AN INTERNAL COMBUSTION ENGINE, THE COMBINATION OF A CASING FORMED WITH A LONGITUDINAL BORE AND A PLURALITY OF FUEL DELIVERY PORTS OPENING INTO SAID BORE, A COMBINED PUMPING AND DISTRIBUTING PLUNGER DISPOSED WITHIN SAID BORE, FILL VALVE MEANS FOR SUPPLYING FUEL TO SAID BORE, MEANS FOR RECIPROCATING SAID PLUNGER TO COMPRESS FUEL WITHIN SAID BORE AND ROTATING SAID PLUNGER TO DISTRIBUTE FUEL THROUGH SAID PORTS, METERING MEANS COMPRISING A SPRING LOADED PISTON IN DIRECT COMMUNICATION WITH SAID BORE AND ADAPTED TO BE DISPLACED A LIMITED AMOUNT BY FLUID PRESSURE DEVELOPED IN SAID BORE WITH EACH STROKE OF SAID PLUNGER AND INCLUDING CONTROL MEANS FOR LIMITING THE STROKE OF SAID PISTON IN ACCORDANCE WITH ENGINE DEMAND, WHEREBY METERED CHARGES OF FUEL ARE FORMED AND DISTRIBUTED BY SAID PLUNGER THROUGH EACH OF SAID PORTS.