DE102011077535A1 - Pump, in particular high-pressure fuel pump - Google Patents
Pump, in particular high-pressure fuel pump Download PDFInfo
- Publication number
- DE102011077535A1 DE102011077535A1 DE201110077535 DE102011077535A DE102011077535A1 DE 102011077535 A1 DE102011077535 A1 DE 102011077535A1 DE 201110077535 DE201110077535 DE 201110077535 DE 102011077535 A DE102011077535 A DE 102011077535A DE 102011077535 A1 DE102011077535 A1 DE 102011077535A1
- Authority
- DE
- Germany
- Prior art keywords
- cam
- pump
- surface layer
- role
- drive shaft
- 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.)
- Withdrawn
Links
Images
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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
- C23C10/38—Chromising
- C23C10/40—Chromising of ferrous surfaces
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
- C23C8/22—Carburising of ferrous surfaces
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/445—Selection of particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0413—Cams
Abstract
Die Pumpe umfasst wenigstens ein Pumpenelement (18), das einen durch eine rotierende Antriebswelle (14) zumindest mittelbar in einer Hubbewegung angetriebenen Pumpenkolben (20) aufweist, wobei die Antriebswelle (14) wenigstens einen Nocken (16) aufweist, auf dem eine Rolle (50) abläuft, über die sich der Pumpenkolben (20) zumindest mittelbar am Nocken (16) abstützt. Der Nocken (16) und/oder die Rolle (50) weist in einem Kontaktbereich zumindest bereichsweise eine Oberflächenschicht (60) mit gegenüber dem Grundwerkstoff des Nockens (16) bzw. der Rolle (50) geringerer Kaltverschweißungsneigung auf. Die Oberflächenschicht (60) ist vorzugsweise eine chromierte Oberflächenschicht.The pump comprises at least one pump element (18) which has a pump piston (20) driven at least indirectly in a lifting movement by a rotating drive shaft (14), the drive shaft (14) having at least one cam (16) on which a roller ( 50) runs, via which the pump piston (20) is supported at least indirectly on the cam (16). The cam (16) and / or the roller (50) has a surface layer (60) in a contact area, at least in some areas, with a lower tendency to cold weld than the base material of the cam (16) or the roller (50). The surface layer (60) is preferably a chromed surface layer.
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einer Pumpe, insbesondere Kraftstoffhochdruckpumpe, nach der Gattung des Anspruchs 1. The invention relates to a pump, in particular high-pressure fuel pump, according to the preamble of claim 1.
Eine solche Pumpe in Form einer Kraftstoffhochdruckpumpe ist durch die
Offenbarung der ErfindungDisclosure of the invention
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße Pumpe mit den Merkmalen gemäß Anspruch 1 hat demgegenüber den Vorteil, dass durch die Oberflächenschicht eine Kaltverschweißung des Nockens und der Rolle vermieden ist oder die Gefahr einer Kaltverschweißung zumindest verringert ist und somit die Gefahr eines Ausfalls der Pumpe verringert ist. The pump according to the invention with the features according to claim 1 has the advantage that by the surface layer a cold welding of the cam and the roller is avoided or the risk of cold welding is at least reduced and thus the risk of failure of the pump is reduced.
In den abhängigen Ansprüchen sind vorteilhafte Ausgestaltungen und Weiterbildungen der erfindungsgemäßen Pumpe angegeben. Durch die Ausbildung gemäß den Ansprüchen 2 und 3 wird die Oberflächenschicht mit geringer Kaltverschweißungsneigung auf einfache Weise erzielt, wobei auch eine hohe Resistenz gegen Oxidation erreicht wird. Durch die Ausbildung gemäß Anspruch 4 wird außerdem ein hohe Härte der Oberflächenschicht und somit eine hohe Widerstandsfähigkeit gegen abrasiven Verschleiß erreicht. Durch die Ausbildung gemäß Anspruch 7 und 8 wird ebenfalls eine hohe Härte der Oberflächenschicht erreicht. In the dependent claims advantageous refinements and developments of the pump according to the invention are given. By the construction according to claims 2 and 3, the surface layer is achieved with low tendency to cold welding in a simple manner, with a high resistance to oxidation is achieved. The embodiment according to claim 4 also achieves a high hardness of the surface layer and thus a high resistance to abrasive wear. The embodiment according to claims 7 and 8 also achieves a high hardness of the surface layer.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen
Beschreibung des AusführungsbeispielsDescription of the embodiment
In den
Der Pumpenkolben
Der Pumpenkolben
Die Rolle
Durch die Wärmebehandlung wird im Bereich der Oberflächenschicht
Vorzugsweise ist die Oberflächenschicht
Vorzugsweise weist der Stahl der Rolle
Die Oberflächenschicht
Wenn die Rolle
Vor dem Chromieren wird die Rolle
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102004004705 A1 [0002] DE 102004004705 A1 [0002]
Claims (8)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110077535 DE102011077535A1 (en) | 2011-06-15 | 2011-06-15 | Pump, in particular high-pressure fuel pump |
PCT/EP2012/059538 WO2012171762A1 (en) | 2011-06-15 | 2012-05-23 | Pump, in particular high-pressure fuel pump, having a coating on a cam and/or roller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110077535 DE102011077535A1 (en) | 2011-06-15 | 2011-06-15 | Pump, in particular high-pressure fuel pump |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102011077535A1 true DE102011077535A1 (en) | 2012-12-20 |
Family
ID=46149447
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201110077535 Withdrawn DE102011077535A1 (en) | 2011-06-15 | 2011-06-15 | Pump, in particular high-pressure fuel pump |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102011077535A1 (en) |
WO (1) | WO2012171762A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013210419A1 (en) | 2013-06-05 | 2014-12-11 | Robert Bosch Gmbh | Pump, in particular high-pressure fuel pump |
DE102013210861A1 (en) | 2013-06-11 | 2014-12-11 | Robert Bosch Gmbh | pump |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004004705A1 (en) | 2004-01-30 | 2005-08-18 | Robert Bosch Gmbh | High-pressure pump, in particular for a fuel injection device of an internal combustion engine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006041673A1 (en) * | 2006-02-20 | 2007-08-23 | Robert Bosch Gmbh | High pressure pump especially for fuel injection in IC engine has the cam follower supported axially by hardened low wear surfaces |
US20080152491A1 (en) * | 2006-12-26 | 2008-06-26 | Davies Lucy V | Coatings for use in fuel system components |
DE102010003886A1 (en) * | 2010-04-13 | 2011-10-13 | Robert Bosch Gmbh | high pressure pump |
-
2011
- 2011-06-15 DE DE201110077535 patent/DE102011077535A1/en not_active Withdrawn
-
2012
- 2012-05-23 WO PCT/EP2012/059538 patent/WO2012171762A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004004705A1 (en) | 2004-01-30 | 2005-08-18 | Robert Bosch Gmbh | High-pressure pump, in particular for a fuel injection device of an internal combustion engine |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013210419A1 (en) | 2013-06-05 | 2014-12-11 | Robert Bosch Gmbh | Pump, in particular high-pressure fuel pump |
DE102013210861A1 (en) | 2013-06-11 | 2014-12-11 | Robert Bosch Gmbh | pump |
Also Published As
Publication number | Publication date |
---|---|
WO2012171762A1 (en) | 2012-12-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140101 |