Fuel injection valves

• US 3,241,768 A
• Filed: 04/24/1964
• Issued: 03/22/1966
• Est. Priority Date: 05/01/1963
• Status: Expired due to Term

• Current Assignee: Lucas Industries Public Limited Company Great King Street Birmingha B19 2XF England
• Original Assignee: Hugh Croft Brian
• Inventors: HUGH CROFT BRIAN
• Application Number:
  US04/362,385
• Time in Patent Office: 697 Days
• US Class Current: 239/124
• CPC Class Codes: F02M 2700/055 Fuel distribution among injection nozzles
• CPC Class Codes: F02M 51/0625 characterised by arrangement of mobile armatures
• CPC Class Codes: F02M 51/0657 the body being hollow and its interior communicating with the fuel flow
• CPC Class Codes: F02M 51/08 specially for low-pressure fuel-injection
• CPC Class Codes: F02M 61/06 the valves being furnished at seated ends with pintle or plug shaped extensions
• CPC Class Codes: F02M 61/145 the injection nozzle opening into the air intake conduit
• CPC Class Codes: F02M 61/162 Means to impart a whirling motion to fuel upstream or near discharging orifices
• CPC Class Codes: F02M 69/50 Arrangement of fuel distributors , e.g. with means for supplying equal portion of metered fuel to injectors F02M69/147 takes precedence

Claims

1. AN ELECTROMAGNETICALLY OPERATED FUEL INJECTION VALVE HAVING A VALVE BODY WHICH IS ADAPTED TO BE RECEIVED WITHIN A CAVITY IN A PART OF AN ENGINE, A VALVE STEM LOCATED WITHIN THE BODY AND ENGAGING A VALVE SEATING AT ONE END AND HAVING AN ARMATURE PORTION AT ITS OTHER END, A SOLENOID FOR ATTRACTING SAID ARMATURE TO LIFT SAID ONE END OF THE VALVE STEM FROM THE SEATING TO OPEN THE VALVE AND ALLOW FUEL TO FLOW THROUGH AN OUTLET ORIFICE, SPRING MEANS FOR NORMALLY URGING THE VALVE STEM INTO CONTACT WITH THE SEATING, A SWIRL CHAMBER SURROUNDING THE VALVE STEM UPSTREAM OF THE VALVE SEATING AND AT LEAST ONE INLET PORT EXTENDING THROUGH THE WALL OF THE VALVE BODY AND SUBSTANTIALLY TANGENTIAL TO THE SWIRL CHAMBER FOR FEEDING FUEL TO THE SWIRL CHAMBER.