Pump, in particular high-pressure fuel pump
US-2017328322-A1 · Nov 16, 2017 · US
Pump, in particular high-pressure fuel pump
US10280884B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10280884-B2 |
| Application number | US-201515528010-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 27, 2015 |
| Priority date | Nov 21, 2014 |
| Publication date | May 7, 2019 |
| Grant date | May 7, 2019 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
Disclosed is a pump, in particular a high-pressure fuel pump, comprising at least one pump element ( 10 ) that has a roller tappet ( 20 ) inside which a roller ( 42 ) is rotatably mounted on a bearing bolt ( 44 ) by means of a bearing sleeve ( 46 ), said roller ( 42 ) rolling off a cam ( 22 ) of an input shaft ( 24 ). The bearing sleeve ( 46 ) is made of a plastic material, especially polyether ether ketone (PEEK) or polyphthalamide (PPA).
First claim
Opening claim text (preview).
What is claimed is: 1. A pump, having at least one pump element ( 10 ), which comprises a roller tappet ( 20 ), in which a roller ( 42 ), which rolls on a cam ( 22 ) of a drive shaft ( 24 ), is rotatably supported on a bearing pin ( 44 ) by a bearing bush ( 46 ), characterized in that the bearing bush ( 46 ) is made from a plastic material, wherein at least one filler is added to the plastic material of the bearing bush ( 46 ) to improve an emergency running characteristic of the bearing bush ( 46 ) in an event of inadequate lubrication. 2. The pump as claimed in claim 1 , characterized in that the bearing bush ( 46 ) is made from polyether ether ketone (PEEK). 3. The pump as claimed in claim 1 , characterized in that the bearing bush ( 46 ) is made from polyphthalamide (PPA). 4. The pump as claimed in claim 1 , characterized in that the bearing bush ( 46 ) is made from polyphenylene sulfide (PPS). 5. The pump as claimed in claim 1 , characterized in that the bearing bush ( 46 ) is made from polyimide or polyamide imide. 6. The pump as claimed in claim 1 , characterized in that the at least one filler comprises at least one of carbon fibers, glass fibers, potassium titanate, polyaramid, titanium dioxide, zinc sulfide, graphite, or polytetrafluoroethylene. 7. The pump as claimed in claim 1 , characterized in that the bearing bush ( 46 ) is produced by an injection molding method. 8. The pump as claimed in claim 1 , characterized in that the bearing bush ( 46 ) is produced by a method of pressing. 9. The pump as claimed in claim 1 , characterized in that the bearing bush ( 46 ) is produced as a portion of a bar material. 10. The pump as claimed in claim 1 , wherein the pump is a high-pressure fuel pump.
Assignees
Inventors
Classifications
- F02M59/445Primary
Selection of particular materials · CPC title
Pistons · CPC title
Composition of the plastic · CPC title
Synthetic polymers, e.g. plastics; Rubber · CPC title
Elastomeric or plastic materials · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US10280884B2 cover?
- Disclosed is a pump, in particular a high-pressure fuel pump, comprising at least one pump element ( 10 ) that has a roller tappet ( 20 ) inside which a roller ( 42 ) is rotatably mounted on a bearing bolt ( 44 ) by means of a bearing sleeve ( 46 ), said roller ( 42 ) rolling off a cam ( 22 ) of an input shaft ( 24 ). The bearing sleeve ( 46 ) is made of a plastic material, especially polyether…
- Who is the assignee on this patent?
- Bosch Gmbh Robert
- What technology area does this patent fall under?
- Primary CPC classification F02M59/445. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 07 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).