EP2396534A1 - Kraftstoffpumpe und verfahren zur fertigung einer kraftstoffpumpe - Google Patents
Kraftstoffpumpe und verfahren zur fertigung einer kraftstoffpumpeInfo
- Publication number
- EP2396534A1 EP2396534A1 EP10702706A EP10702706A EP2396534A1 EP 2396534 A1 EP2396534 A1 EP 2396534A1 EP 10702706 A EP10702706 A EP 10702706A EP 10702706 A EP10702706 A EP 10702706A EP 2396534 A1 EP2396534 A1 EP 2396534A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing parts
- fuel pump
- layer
- ceramic
- impeller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/08—Feeding by means of driven pumps electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/90—Coating; Surface treatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/10—Metals, alloys or intermetallic compounds
- F05D2300/12—Light metals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2300/00—Materials; Properties thereof
- F05D2300/20—Oxide or non-oxide ceramics
- F05D2300/21—Oxide ceramics
- F05D2300/2108—Phosphor
Definitions
- the invention relates to a fuel pump for a motor vehicle with a driven impeller and with the impeller axially opposite housing parts and with a spacer for spacing the housing parts, wherein the housing parts are made of light metal. Furthermore, the invention relates to a method for manufacturing a fuel pump for a motor vehicle, in which a driven impeller between two axially opposed housing parts is arranged with a spacer for spacing the housing parts and the housing parts are made of light metal.
- Such fuel pumps are known in practice.
- one of the housing parts has an inlet channel and the other housing part has an outlet channel. The fuel pump is thereby flowed through axially.
- the spacer is ring-shaped and surrounds the impeller.
- the housing parts can be biased against the spacer.
- the height of the spacer and the height of the impeller are in new condition of the fuel pump significantly the gap between the end faces of the impeller and the housing parts.
- the invention is based on the problem, a fuel pump of the type mentioned so on to form that it has a high efficiency even after long operation. Furthermore, a method for manufacturing the fuel pump is to be created, which ensures a high efficiency of the fuel pump.
- the first problem is inventively achieved in that the housing parts has on its side facing the impeller a layer of ceramic.
- the surface of the housing parts to the authoritative for the permanently high efficiency of the fuel pump bodies a particularly high wear protection.
- ceramics are largely insensitive to corrosive fuels, such as alcohol-containing fuels, the surfaces of the housing parts made of aluminum are reliably protected against chemical wear.
- ceramic has a particularly high resistance to abrasive wear, especially in comparison to the light metal of the housing parts.
- the housing parts are reliably protected against wear even when using the fuel pump according to the invention in a dusty environment.
- the fuel pump according to the invention thus has a high efficiency even after long operation.
- the light metal of the housing parts is an aluminum alloy.
- the production of the layer of ceramic can be made particularly cost-effective according to an advantageous embodiment of the invention, if the layer contains oxide ceramic.
- the so-called plasma-electrolytic oxidation is suitable.
- the layer contains a compound of phosphorus.
- the inclusion of the compound of phosphorus in the oxide ceramic-containing layer represents the special the high strength of the surface of the housing parts against abrasive wear and chemical wear safely.
- the layer of ceramic has a reliable connection to the material of the housing parts when the layer of ceramic is produced by chemical transformation of the light metal of the housing parts.
- This reliable connection of the ceramic layer with the material of the housing parts reliably avoids chipping of the layer and thus the risk that chipped ceramics can get into the gap between the housing part and the impeller.
- the fuel pump according to the invention also has a particularly high level of security against a spontaneous failure.
- the so-called plasma electrolytic oxidation is used, in which the light metal of the housing parts is even converted into the light metal oxide.
- a high stability of the layer and high safety against spalling can be ensured according to another advantageous development of the invention if the layer of ceramic is 2-15 ⁇ m thick.
- the fuel pump according to the invention has a particularly long service life, when the surface of the impeller is made of fiber-reinforced plastic.
- the material pairing of ceramic and fiber-reinforced plastic within the fuel pump is opposite.
- This material pairing has a particularly durable protection against abrasive wear of the components.
- Impeller made entirely of fiber-reinforced plastic and thus particularly inexpensive to produce.
- the housing parts are according to another advantageous development of the invention reliably protected against corrosion when the layer of ceramic extends over the entire surface of the housing parts.
- the second-mentioned problem namely the creation of a method for manufacturing the fuel pump, which ensures a high efficiency of the fuel pump is inventively achieved in that prior to assembly, at least on the impeller opposite sides of the housing parts, a layer of ceramic is produced.
- This design produces the layer of ceramic on the relatively soft housing parts made of light metal, which provides a particularly high level of protection against abrasive or chemical wear.
- the fuel pump manufactured by the method according to the invention has a permanently high efficiency.
- the generation of the layer is particularly simple according to an advantageous development of the invention, when the layer of ceramic is produced by plasma-electrolytic oxidation.
- the component to be coated is applied in a chemical bath at 100 0 C with a pulsating alternating voltage.
- a plasma forms around the component, which converts the material of the component into oxide ceramics.
- This layer is harder than a comparable layer produced by the hard anodization process.
- FIG. 1 is a sectional view through a fuel pump according to the invention
- Fig. 2 is a plan view of one of the housing parts.
- FIG. 1 shows a fuel pump with a pump stage 2 driven by an electric motor 1.
- the pump stage 2 has a housing 3 with two held by a spacer 4 at a distance housing parts 5, 6.
- the spacer 4 is shown here as a separate component. Of course, the spacer 4 can also be made in one piece with one of the Genzousetei- Ie 5, 6.
- an impeller 7 is rotatably arranged.
- the impeller 7 is mounted on a shaft 8 of the electric motor 1.
- the housing part 6 facing away from the electric motor 1 has an inlet channel 9 for sucking in fuel.
- the housing part 5 facing the electric motor 1 has an outlet channel 10 which leads to the electric motor 1.
- the inlet channel 9 and the outlet channel 10 are shown rotated in the drawing plane.
- the pump stage 2 is designed as a side channel pump and has one of the inlet channel 9 having housing part 6 through the impeller 7 to the outlet channel 10 having housing part 5 guided delivery chamber 11.
- the fuel pump also has at the pump stage 2 opposite end of the electric motor 1 a Connecting piece 12 for the connection of a flow line, not shown.
- the electric motor 1 drives the impeller 7, as a result of which fuel is sucked in through the inlet channel 9 and conveyed through the delivery chamber 11 to the outlet channel 10. Subsequently, the fuel flows through the electric motor 1 to the connecting piece 12.
- the housing parts 5, 6 are made of aluminum, for example by injection molding, while the impeller 7 is made of fiber-finished plastic. On their sides facing the impeller 7, the housing parts 5, 6 each have a 2 to 15 ⁇ m thick layer 13, 14 made of ceramic. These layers 13, 14 may extend over the entire housing parts 5, 6 in a non-illustrated embodiment.
- FIG. 2 shows, in a plan view of the housing part 5 of FIG. 1, the outlet channel 10, that the layer 13 of ceramic extends over the entire surface facing the impeller 7 from FIG.
- the housing part 5 is a arranged to the outlet channel 10 guided partial annular channel of the delivery chamber 11.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009008792A DE102009008792A1 (de) | 2009-02-13 | 2009-02-13 | Kraftstoffpumpe und Verfahren zur Fertigung einer Kraftstoffpumpe |
| PCT/EP2010/051531 WO2010092033A1 (de) | 2009-02-13 | 2010-02-09 | Kraftstoffpumpe und verfahren zur fertigung einer kraftstoffpumpe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2396534A1 true EP2396534A1 (de) | 2011-12-21 |
| EP2396534B1 EP2396534B1 (de) | 2016-04-20 |
Family
ID=41718691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10702706.2A Active EP2396534B1 (de) | 2009-02-13 | 2010-02-09 | Kraftstoffpumpe und verfahren zur fertigung einer kraftstoffpumpe |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2396534B1 (de) |
| JP (1) | JP2012518112A (de) |
| CN (1) | CN102317613A (de) |
| DE (1) | DE102009008792A1 (de) |
| WO (1) | WO2010092033A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012223592A1 (de) | 2012-12-18 | 2014-07-03 | Robert Bosch Gmbh | Geometrie zum Ausgleich axial auftretender Spalte in Elektropumpen |
| DE102013108482A1 (de) * | 2013-08-06 | 2015-02-12 | Pfeiffer Vacuum Gmbh | Vakuumpumpstufe |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4537632A (en) * | 1983-10-19 | 1985-08-27 | Sermatech International, Inc. | Spherical aluminum particles in coatings |
| JP2690985B2 (ja) * | 1988-12-26 | 1997-12-17 | 株式会社荏原製作所 | 流体機器用ケーシング及びそれを用いた流体機器 |
| US5098797B1 (en) * | 1990-04-30 | 1997-07-01 | Gen Electric | Steel articles having protective duplex coatings and method of production |
| DE19634253A1 (de) * | 1995-12-30 | 1997-07-03 | Bosch Gmbh Robert | Aggregat zum Fördern von Kraftstoff |
| US6454521B1 (en) * | 2000-11-15 | 2002-09-24 | Delphi Technologies, Inc. | Wear resistant fuel pump |
| DE10115866A1 (de) * | 2001-03-30 | 2002-10-10 | Bosch Gmbh Robert | Aggregat zum Fördern von Kraftstoff |
| US6623237B2 (en) * | 2001-08-21 | 2003-09-23 | Delphi Technologies, Inc. | Wear resistant fuel pump |
| DE20220775U1 (de) * | 2002-01-15 | 2004-07-08 | Siemens Ag | Pumpe |
| DE102007025510A1 (de) * | 2007-06-01 | 2008-12-04 | Continental Automotive Gmbh | Kraftstoffpumpe |
-
2009
- 2009-02-13 DE DE102009008792A patent/DE102009008792A1/de not_active Withdrawn
-
2010
- 2010-02-09 JP JP2011549534A patent/JP2012518112A/ja active Pending
- 2010-02-09 CN CN201080007641XA patent/CN102317613A/zh active Pending
- 2010-02-09 EP EP10702706.2A patent/EP2396534B1/de active Active
- 2010-02-09 WO PCT/EP2010/051531 patent/WO2010092033A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010092033A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012518112A (ja) | 2012-08-09 |
| WO2010092033A1 (de) | 2010-08-19 |
| EP2396534B1 (de) | 2016-04-20 |
| CN102317613A (zh) | 2012-01-11 |
| DE102009008792A1 (de) | 2010-08-19 |
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