Automotive electrical oil pump

Patent metadata

Field	Value
Publication number	US-10989192-B2
Application number	US-201616068899-A
Country	US
Kind code	B2
Filing date	Jan 12, 2016
Priority date	Jan 12, 2016
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

An automotive electrical oil pump which includes an oil displacement pumping unit with a pump rotor which rotates in a pump chamber to pump oil to an oil recipient, an electric driving motor which drives the pump rotor, an electrical connector plug which connects the electric driving motor to a power source, and a fluid connector. The fluid connector includes a pump inlet fluidically connected to a chamber inlet, a pump outlet fluidically connected to a chamber outlet, a first lateral circular ring opening which define the pump inlet or the pump outlet, and a second lateral circular ring opening or a circular front opening which defines the pump outlet or the pump inlet. The second lateral circular ring opening is provided separate from the first lateral circular ring opening. The pump outlet and the pump inlet are arranged coaxially to each other.

First claim

What is claimed is:

1. An automotive electrical oil pump comprising:
an oil displacement pumping unit comprising a pump rotor which is configured to rotate in a pump chamber so as to pump a pressurized oil to an oil recipient;
an electric driving motor configured to drive the pump rotor of the oil displacement pumping unit, the electric driving motor comprising a rotation axis;
an electrical connector plug configured to electrically connect the electric driving motor to a power source; and
a fluid connector comprising,
a pump inlet which is fluidically connected to a chamber inlet,
a pump outlet which is fluidically connected to a chamber outlet,
a first lateral circular ring groove which is configured to define the pump inlet or the pump outlet, and
a second lateral circular ring groove which is configured to define the pump outlet or the pump inlet, the second lateral circular ring groove being provided separate from the first lateral circular ring groove,

wherein,
the first lateral circular ring groove defines the pump inlet and the second lateral circular ring groove defines the pump outlet, or the first lateral circular ring groove defines
the pump outlet and the second lateral circular ring groove defines the pump inlet,
the pump outlet and the pump inlet are arranged coaxially to each other,
the pump inlet and pump outlet of the fluid connector are both arranged coaxially to the rotation axis of the electric driving motor,
the fluid connector is formed as a cylindrical body comprising an outer circumferential surface, and
the pump inlet and the pump outlet are defined at the outer circumferential surface of the cylindrical body.

2. The automotive electrical oil pump as recited in claim 1 , wherein the cylindrical body further comprises a first axial channel which is configured to connect the pump inlet with the chamber inlet and a second axial channel which is configured to connect the pump outlet with the chamber outlet.

3. The automotive electrical oil pump as recited in claim 1 , wherein the electrical connector plug is arranged radially with a plugging direction which is substantially radial with respect to the rotation axis.

4. The automotive electrical oil pump as recited in claim 1 , wherein the oil displacement pumping unit is defined by a gerotor assembly wherein at least one of the chamber inlet and the chamber outlet is eccentric.

5. The automotive electrical oil pump as recited in claim 1 , wherein the pump inlet is arranged axially distal of the pump outlet.

6. The automotive electrical oil pump as recited in claim 5 , wherein
the second lateral circular ring groove is configured to define the pump inlet, and
the second lateral circular ring groove is arranged at an edge of a distal end of the fluid connector.

7. The automotive electrical oil pump as recited in claim 1 , wherein the pump outlet is arranged axially distal of the pump inlet.

8. The automotive electrical oil pump as recited in claim 7 , wherein the second lateral circular ring groove is configured to define the pump outlet, and the second lateral circular ring groove is arranged at an edge of a distal end of the fluid connector.

9. The automotive electrical oil pump as recited in claim 1 , wherein the first lateral circular ring groove and the second lateral circular ring groove are each fluidically sealed by at least one flexible radial sealing ring which is arranged at the outer circumferential surface of the fluid connector.

10. An automotive electrical oil pump comprising:
an oil displacement pumping unit comprising a pump rotor which is configured to rotate in a pump chamber so as to pump a pressurized oil to an oil recipient;
an electric driving motor configured to drive the pump rotor of the oil displacement pumping unit, the electric driving motor comprising a rotation axis;
an electrical connector plug configured to electrically connect the electric driving motor to a power source; and
a fluid connector comprising,
a pump inlet which is fluidically connected to a chamber inlet,
a pump outlet which is fluidically connected to a chamber outlet,
a first lateral circular ring groove which is configured to define the pump inlet or the pump outlet, and
a circular front opening which is configured to define the pump outlet or the pump inlet, the circular front opening being provided separate from the first lateral circular ring groove,

wherein,
the first lateral circular ring groove defines the pump inlet and the circular front opening defines the pump outlet, or the first lateral circular ring groove defines the pump outlet and the circular front opening defines the pump inlet,
the pump outlet and the pump inlet are arranged coaxially to each other,
the pump inlet and pump outlet of the fluid connector are both arranged coaxially to the rotation axis of the electric driving motor,
the fluid connector is formed as a cylindrical body comprising an outer circumferential surface, and
the pump inlet or the pump outlet is defined by the first lateral circular ring groove at the outer circumferential surface of the cylindrical body.

11. The automotive electrical oil pump as recited in claim 10 , wherein the pump inlet or the pump outlet is arranged at a free axial end face of the cylindrical body.

12. The automotive electrical oil pump as recited in claim 10 , wherein the cylindrical body further comprises a first axial channel which is configured to connect the pump inlet with the chamber inlet and a second axial channel which is configured to connect the pump outlet with the chamber outlet.

13. The automotive electrical oil pump as recited in claim 10 , wherein the electrical connector plug is arranged radially with a plugging direction which is substantially radial with respect to the rotation axis.

14. The automotive electrical oil pump as recited in claim 10 , wherein the oil displacement pumping unit is defined by a gerotor assembly wherein at least one of the chamber inlet and the chamber outlet is eccentric.

15. The automotive electrical oil pump as recited in claim 10 , wherein the pump inlet is arranged axially distal of the pump outlet.

16. The automotive electrical oil pump as recited in claim 15 , wherein the circular front opening is configured to define the pump inlet.

17. The automotive electrical oil pump as recited in claim 10 , wherein the pump outlet is arranged axially distal of the pump inlet.

18. The automotive electrical oil pump as recited in claim 10 , wherein the first lateral circular ring groove and the circular front opening are each fluidically sealed by at least one flexible radial sealing ring which is arranged at the outer circumferential surface of the fluid connector.

Assignees

• Pierburg Pump Technology Gmbh

Inventors

• Schroeder Viktor
• Malvasi Alessandro
• Wulf Andreas

Classifications

• F04C2240/30

  Casings or housings · CPC title

• F04C2/102

  the two members rotating simultaneously around their respective axes · CPC title

• F04C2250/10

  of the inlet or outlet · CPC title

• F01M2001/0238

  Rotary pumps · CPC title

• F04C15/06 Primary

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