Cooling channel cover and piston provided with a cooling channel cover

Patent metadata

Field	Value
Publication number	US-10240557-B2
Application number	US-201515523210-A
Country	US
Kind code	B2
Filing date	Oct 27, 2015
Priority date	Oct 30, 2014
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A cooling channel cover for a piston of an internal combustion engine may include a body having mutually opposite end faces. At least one supply element for a coolant may be received in an opening disposed in the cooling channel cover. The supply element may include an inlet region and an outlet region, and may be held on the cooling channel cover via a clipped-in latching connection. A spring tab may be disposed on the inlet region of the supply element, and/or a latching element may be disposed on the outlet region of the supply element. The spring clip may engage one of the end faces and the latching element may engage the opposite end face.

First claim

The invention claimed is:

1. A cooling channel cover for a piston of an internal combustion engine, comprising:
a body having mutually opposite end faces and an opening;
at least one supply element for cooling oil having an inlet region and an outlet region, the at least one supply element received in the opening and held on the body via a clipped-in latching connection;
the at least one supply element including at least one spring tab disposed at the inlet region extending radially outward in a circumferential direction of the body, and at least one latching element disposed at the outlet region that is radially elastic in the circumferential direction of the body;
wherein the at least one spring tab bears against one end face of the mutually opposite end faces and the at least one latching element bears against the other end face of the mutually opposite end faces; and
wherein the at least one spring tab includes two spring tabs and the at least one latching element includes two latching elements, and wherein the two spring tabs and the two latching elements are disposed radially opposite one another in the circumferential direction of the body.

2. The cooling channel cover as claimed in claim 1 , wherein the at least one spring tab of the two spring tabs bears against the one end face via a bearing surface and the at least one latching element of the two latching elements bears against the other end face via a bearing surface, and wherein the bearing surface of the at least one latching element has a size that is from 30% to 60% of a size of the bearing surface of the at least one spring tab.

3. The cooling channel cover as claimed in claim 1 , wherein the inlet region of the at least one supply element is widened in a funnel shape.

4. The cooling channel cover as claimed in claim 1 , wherein the outlet region of the at least one supply element is a standpipe.

5. The cooling channel cover as claimed in claim 1 , wherein the at least one supply element has a passage opening with a round cross section.

6. The cooling channel cover as claimed in claim 1 , wherein the at least one supply element has a passage opening defining a cross section having a radius that is larger in the circumferential direction of the body than in a radial direction of the body.

7. The cooling channel cover as claimed in claim 1 , wherein the at least one supply element includes at least one of a plastic material and a metallic material.

8. The cooling channel cover as claimed in claim 1 , wherein the body is structured as a two-part elastic component.

9. The cooling channel cover as claimed in claim 8 , wherein the two-part elastic component is a spring sheet.

10. A piston for an internal combustion engine, comprising:
a cooling channel cover having a first end face and a second end face disposed mutually opposite one another, and an opening extending transversely therethrough;
at least one supply element for cooling oil having an inlet region and an outlet region, the at least one supply element received in the opening and held on the cooling channel cover via a clipped-in latching connection;
the at least one supply element including at least one spring tab disposed at the inlet region extending radially outward in a circumferential direction of the cooling channel cover, and at least one latching element disposed at the outlet region that is radially elastic in the circumferential direction of the cooling channel cover;
wherein the at least one spring tab bears against the first end face and the at least one latching element bears against the second end face; and
wherein the at least one latching element protrudes radially outwardly from the outlet region of the at least one supply element and extends in a direction towards the inlet region to a free end, and wherein the at least one latching element extends in the direction towards the inlet region with a radial spacing from the at least one supply element.

11. The piston as claimed in claim 10 , wherein the at least one latching element includes two latching elements arranged mutually opposite to one another at the outlet region of the at least one supply element.

12. The piston as claimed in claim 10 , wherein the at least one spring tab includes two spring tabs arranged mutually opposite one another at the inlet region of the at least one supply element, and wherein the two spring tabs each define a longitudinal axis extending radially outwardly from the at least one supply element and oriented in the circumferential direction of the cooling channel cover.

13. The piston as claimed in claim 10 , further comprising a piston head, wherein the cooling channel cover is structured as a separate component attached to the piston head.

14. The piston as claimed in claim 10 , further comprising a piston head, wherein the cooling channel cover is disposed integrally on the piston head.

15. The cooling channel cover as claimed in claim 1 , wherein at least one of the two spring tabs and the two latching elements bias the body against the other of the at least one of the two spring tabs and the two latching elements.

16. The cooling channel cover as claimed in claim 1 , wherein the two latching elements protrude radially outwardly from the outlet region of the at least one supply element and extend in a direction towards the inlet region where a respective free end of the two latching elements define an axial spacing from the two spring tabs.

17. The cooling channel cover as claimed in claim 1 , wherein the two spring tabs are structured axially elastic and define a respective radially extending longitudinal axis oriented in the circumferential direction of the body.

18. A cooling channel cover for a piston of an internal combustion engine, comprising:
a body having mutually opposite end faces and an opening;
at least one supply element for cooling oil having an inlet region and an outlet region, the at least one supply element received in the opening and held on the body via a clipped-in latching connection;
the at least one supply element including at least one spring tab disposed at the inlet region extending radially outward in a circumferential direction of the body, and at least one latching element disposed at the outlet region that is radially elastic in the circumferential direction of the body;
wherein the at least one spring tab bears against one end face of the mutually opposite end faces and the at least one latching element bears against the other end face of the mutually opposite end faces; and
wherein the at least one supply element has a passage opening defining a cross section having a radius that is larger in the circumferential direction of the body than in a radial direction of the body.

19. The cooling channel cover as claimed in claim 18 , wherein the at least one spring tab bears against the one end face via a bearing surface and the at least one latching element bears against the other end face via a bearing surface, wherein the bearing surface of the at least one spring tab and the bearing surface of the at least one latching element are structured and arranged radially offset from one another such that the bearing surface of the at least one spring tab lies against the one end face in radial spaced apart relation to the bearing surface of the at least one latching element that lies against the other end face.

Assignees

• Mahle Int Gmbh

Inventors

• Boczek Sascha-Oliver
• Linke Timo
• Scharp Rainer

Classifications

• F02F3/22 Primary

  the fluid being liquid · CPC title

• F02F3/10

  having surface coverings (F02F3/02 takes precedence) · CPC title

• F02F3/24

  having means for guiding gases in cylinders, e.g. for guiding scavenging charge in two-stroke engines · CPC title