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Method for machining a cylinder wall of an internal combustion engine
US10214803B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10214803-B2 |
| Application number | US-201414914466-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 31, 2014 |
| Priority date | Sep 5, 2013 |
| Publication date | Feb 26, 2019 |
| Grant date | Feb 26, 2019 |
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- Title
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Abstract
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A method for machining a wall of a cylinder of an internal combustion engine, in which recesses in the wall are introduced by mechanical machining. The invention is characterized in that the wall is radiated with a medium under high pressure after the mechanical machining in order to introduce micro-recesses.
First claim
Opening claim text (preview).
Thus, having described the invention, what is claimed is: 1. A method for machining a wall of a cylinder of an internal combustion engine comprising steps in the following order: a) introducing depressions in the form of a helical groove by means of a cutting tool which possesses two separate blades which are aligned obliquely in relation to one another and which cut in the wall simultaneously, wherein the two separate blades form on both sides of a rib an undercut in relation to a radial direction of the cylinder; and b) blasting the wall with a medium under high pressure in order to introduce irregularly formed and arranged micro-depressions. 2. The method of claim 1 , wherein the blasting is carried out with a liquid. 3. The method of claim 1 , wherein the blasting is carried out with a pressure less than or equal to 1500 bar. 4. The method of claim 3 , wherein the blasting is carried out with a pressure between 500 bar and 1500 bar. 5. The method of claim 1 including finally coating the wall. 6. The method of claim 2 , wherein the blasting is carried out with a pressure less than or equal to 1500 bar. 7. The method of claim 6 , wherein the blasting is carried out with a pressure between 500 bar and 1500 bar. 8. A method for machining a wall of a cylinder of an internal combustion engine comprising steps in the following order: a) performing a single cutting step by introducing two separate blades into said cylinder, said two separate blades being aligned obliquely in relation to one another to form a helical groove depression, and that said two separate blades cut in the wall simultaneously, wherein the two separate blades form on both sides of a rib an undercut in relation to a radial direction of the cylinder; and b) blasting the wall with a medium under high pressure in order to introduce irregularly formed and arranged micro-depressions.
Assignees
Inventors
Classifications
Machining or cutting being involved · CPC title
Running faces; Liners · CPC title
Cylinder liners (F02F1/08, F02F1/16 take precedence) · CPC title
by burnishing or the like · CPC title
Wire arc spraying · CPC title
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Frequently asked questions
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- What does patent US10214803B2 cover?
- A method for machining a wall of a cylinder of an internal combustion engine, in which recesses in the wall are introduced by mechanical machining. The invention is characterized in that the wall is radiated with a medium under high pressure after the mechanical machining in order to introduce micro-recesses.
- Who is the assignee on this patent?
- Bayerische Motoren Werke Ag, Univ Muenchen Tech
- What technology area does this patent fall under?
- Primary CPC classification C23C4/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 26 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).