Turbine fuel pump with fuel jet

  • US 5,452,701 A
  • Filed: 05/23/1994
  • Issued: 09/26/1995
  • Est. Priority Date: 05/23/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. An electric-motor fuel pump for installation in a vehicle fuel tank that comprises,a housing including a main fuel outlet and a main fuel inlet opening to the exterior of said housing immediately adjacent the bottom thereof and immediately adjacent the bottom of the fuel tank when installed therein,an electric motor in said housing and including a rotor and means for applying electrical energy to said motor to rotate said rotor in said housing, anda turbine pump in said housing and including an impeller coupled to said rotor for co-rotation therewith and having a periphery with a circumferential array of vanes, an arcuate pumping channel surrounding said impeller periphery and communicating with said main fuel outlet and a turbine pump fuel inlet coupled with said pumping channel and communicating with the exterior of said housing immediately adjacent the bottom thereof and being located immediately adjacent the bottom of the fuel tank when installed therein,said pump having a base housing which includes the main fuel inlet, a secondary fuel outlet in said base housing in communication with said pumping channel, a jet in said secondary fuel outlet, a venturi passage having an outlet end opening to the exterior of said housing and an inlet end axially opposed to said jet, said venturi passage being in communication with said main fuel inlet, whereby turbine pump outlet fuel in said secondary outlet discharging into said jet draws fuel into said venturi passage through said main inlet and discharges fuel from said venturi passage outlet end.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×