218-0266 volcano-shaped inlet of piston oil-cooling gallery

Patent metadata

Field	Value
Publication number	US-11326549-B2
Application number	US-202117154960-A
Country	US
Kind code	B2
Filing date	Jan 21, 2021
Priority date	Jan 21, 2020
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

Methods and systems are provided for an oil gallery of a piston. In one example, a system for a piston comprising an internal oil gallery. The internal oil gallery comprises one or more of a funnel shaped inlet, a funnel shaped outlet, and a plurality of tongues extending along a circumference of the internal oil gallery.

First claim

The invention claimed is:

1. A system, comprising:
a piston configured to oscillate along an axis; and
an oil gallery arranged within the piston configured to route oil circumferentially about the axis; wherein
an inlet of the oil gallery comprises a funnel shape narrowing in width in a downstream direction relative to a direction of oil flow from a nozzle to the oil gallery, and
an outlet of the oil gallery comprises a first concave bend and a second convex bend relative to the oil gallery.

2. The system of claim 1 , wherein the nozzle is arranged on a cylinder block directed to the piston.

3. The system of claim 1 , wherein the inlet directs oil toward a wedge of the oil gallery, and wherein the wedge comprises an m-shape with a first semi-circle arranged in a clockwise direction of the inlet and a second semi-circle arranged in a counterclockwise direction of the inlet, wherein a protrusion is arranged between the first semi-circle and the second semi-circle.

4. The system of claim 1 , wherein an outlet of the oil gallery is shaped identically to the inlet of the oil gallery.

5. The system of claim 4 , wherein a first wedge is arranged adjacent to the inlet and a second wedge is arranged adjacent to the outlet, wherein the first wedge is configured to divided oil flow from the inlet to flow in counterclockwise and clockwise direction around the oil gallery, and wherein the second wedge is configured to direct a clockwise oil flow and a counterclockwise oil flow toward the outlet.

6. The system of claim 4 , wherein the outlet comprises a first recess and a second recess surrounding an extreme end of the funnel shape, wherein the first recess and the second recess are convex relative to the oil gallery.

7. The system of claim 1 , wherein an outlet of the oil gallery comprises a first siphon portion and a second siphon portion each comprising a first concave bend and a second convex bend relative to the oil gallery.

8. An engine system, comprising:
a piston configured to oscillate along an axis; and
an oil gallery arranged within the piston configured to route oil circumferentially about the axis; wherein
the oil gallery comprises a plurality of tongues and a plurality of recesses alternatingly arranged along a circumference of the oil gallery, and
an inlet and an outlet, wherein the inlet comprises a funnel shape, and the outlet comprises a first concave bend and a second convex bend relative to the oil gallery.

9. The engine system of claim 8 , wherein the circumference is between a largest circumference and a smallest circumference of the oil gallery, and wherein the plurality of tongues and the plurality of recesses face directions parallel to the axis.

10. The engine system of claim 8 , wherein the plurality of recesses and the plurality of tongues alternate such that a recess is arranged between adjacent tongues and a tongue is arranged between adjacent recesses.

11. The engine system of claim 8 , wherein the plurality of recesses and the plurality of tongues comprise one or more of a semi-circular, triangular, square, and trapezoidal shape.

12. The engine system of claim 8 , wherein corners of the plurality of tongues and the plurality of recesses are curved.

13. The engine system of claim 8 , wherein the oil gallery comprises an ellipse shape.

14. The engine system of claim 8 , wherein the plurality of recesses and the plurality of tongues are arranged equidistantly around the circumference.

15. A system, comprising:
a piston configured to oscillate along an axis within a cylinder of an engine;
an oil gallery arranged within the piston configured to route oil circumferentially about the axis; wherein
an inlet of the oil gallery comprises a funnel shape narrowing in width in a downstream direction relative to a direction of oil flow from an oil jet to the oil gallery, and wherein the oil gallery comprises a plurality of tongues and a plurality of recesses alternatingly arranged along a circumference of the oil gallery, and
an outlet of the oil gallery comprises one or more S-shaped curves.

16. The system of claim 15 , wherein an outlet of the oil gallery is shaped identically to the inlet of the oil gallery, and wherein the outlet comprises a first recess and a second recess surrounding an extreme end of the funnel shape, wherein the first recess and the second recess are convex relative to the oil gallery.

17. The system of claim 16 , wherein the outlet is 180 degrees away from the inlet along the oil gallery.

18. The system of claim 15 , wherein there are no other inlets or additional outlets other than the inlet and an outlet.

Assignees

• Ford Global Tech Llc

Inventors

• Hopf Anselm
• Kraemer Frank
• Weber Carsten
• Turner Paul
• Heinig Klaus-Peter
• Wendling Loic
• Behr Marek
• Mayer Kai-Martin
• Bartsch Guenter
• Kuhlbach Kai
• Steiner Bernd
• Grosch Guenter

Classifications

• F02F3/22 Primary

  the fluid being liquid · CPC title

• F01P3/10

  Cooling by flow of coolant through pistons · CPC title

• F01P2003/006

  the liquid being oil · CPC title

• F02F2200/00

  Manufacturing · CPC title