Fuel pump and fuel pump module

Patent metadata

Field	Value
Publication number	US-11073118-B2
Application number	US-201615776491-A
Country	US
Kind code	B2
Filing date	Nov 25, 2016
Priority date	Dec 17, 2015
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

A fuel pump is connected to a suction filter which is provided with a filter connecting portion having a cylindrical hole and a projecting portion protruding radially inward from an inner peripheral wall of the cylindrical hole. The fuel pump suctions the fuel filtered by the suction filter. The fuel pump is provided with a suction port having multiple suction openings at a side of the suction filter so as to suction the fuel therethrough, and a pump connecting portion provided at outer side of the multiple suction openings and connected with the filter connecting portion. The pump connecting portion has an outer peripheral wall of which outer shape corresponds with a shape of the inner peripheral wall, and a dent portion denting inward from the outer peripheral wall, which the projecting portion is engaged with.

First claim

The invention claimed is:

1. A fuel pump connected to a suction filter which is provided with a filter connecting portion having a single cylindrical hole and a projecting portion protruding radially inward from an inner peripheral wall of the cylindrical hole, the fuel pump suctioning a fuel filtered by a filter element of the suction filter, the fuel pump comprising:
a suction port having multiple suction openings at a side facing to the suction filter so as to suction the fuel therethrough; and
a pump connecting portion provided at outer side of the multiple suction openings and connected with the filter connecting portion; wherein
the multiple suction openings being in fluid communication with an inner space of the filter element through the single cylindrical hole,
the pump connecting portion has an outer peripheral wall of which outer shape corresponds with a shape of the inner peripheral wall, and a dent portion denting inward from the outer peripheral wall, which the projecting portion is engaged with.

2. The fuel pump according to claim 1 , wherein
the dent portion is annularly formed on entire circumference of the outer peripheral wall, and
the projection portion is annularly formed to be engaged with the dent portion.

3. The fuel pump according to claim 1 , wherein
the projection portion which is intermittently formed in a circumferential direction is engaged with the dent portion.

4. The fuel pump according to claim 1 , wherein
the dent portion has an edge which is rectangle.

5. The fuel pump according to claim 1 , wherein
the pump connecting portion and the multiple suction openings are formed on a same pump component part, and
the outer peripheral wall and the dent portion of the pump connecting portion are concentrically formed with respect to a center axis of the pump component part.

6. A fuel pump module comprising:
a suction filter filtering a fuel by means of a filter element: and
a fuel pump suctioning the fuel filtered by the suction filter, wherein
the suction filter provided with a filter connecting portion having a single cylindrical hole and a projecting portion protruding radially inward from an inner peripheral wall of the cylindrical hole,
the fuel pump provided with a suction port having a plurality of suction openings at a side facing to the suction filter so as to suction the fuel therethrough; and a pump connecting portion provided at outer side of the multiple suction openings and connected with the filter connecting portion;
the multiple suction openings being in fluid communication with an inner space of the filter element through the single cylindrical hole,
the pump connecting portion has an outer peripheral wall of which outer shape corresponds with a shape of the inner peripheral wall, and a dent portion denting inward from the outer peripheral wall, and
the fuel pump and the suction filter are connected with each other in a state where the projecting portion is engaged with the dent portion.

Assignees

• Denso Corp

Inventors

• Ito Satoshi
• Furuhashi Daiji
• Hidaka Yuuji
• Sakai Hiromi

Classifications

• F04C15/06

  Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet · CPC title

• F04C13/008

  Pumps for submersible use, i.e. down-hole pumping · CPC title

• F02M37/50

  Filters arranged in or on fuel tanks · CPC title

• F02M37/10 Primary

  submerged in fuel, e.g. in reservoir · CPC title

• F04C2210/203

  Fuel · CPC title