DE102013219284A1 - Pump, in particular high-pressure fuel pump for a fuel injection device of an internal combustion engine - Google Patents
Pump, in particular high-pressure fuel pump for a fuel injection device of an internal combustion engine Download PDFInfo
- Publication number
- DE102013219284A1 DE102013219284A1 DE201310219284 DE102013219284A DE102013219284A1 DE 102013219284 A1 DE102013219284 A1 DE 102013219284A1 DE 201310219284 DE201310219284 DE 201310219284 DE 102013219284 A DE102013219284 A DE 102013219284A DE 102013219284 A1 DE102013219284 A1 DE 102013219284A1
- Authority
- DE
- Germany
- Prior art keywords
- pump
- cylinder bore
- pump piston
- piston
- room
- 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- Withdrawn
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Classifications
-
- 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
- F04B1/0448—Sealing means, e.g. for shafts or housings
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- 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
- F02M59/442—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 means preventing fuel leakage around pump plunger, e.g. fluid barriers
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- 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
- F04B1/0408—Pistons
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/008—Spacing or clearance between cylinder and piston
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/143—Sealing provided on the piston
Abstract
Die Pumpe weist wenigstens ein Pumpenelement (10) auf, das wiederum einen in einer Hubbewegung angetriebenen Pumpenkolben (12) aufweist, der in einer Zylinderbohrung (18) eines Gehäuseteils (20) der Pumpe verschiebbar geführt ist und in dieser einen Pumpenarbeitsraum (22) begrenzt. Der Pumpenkolben (12) ragt mit seinem dem Pumpenarbeitsraum (22) abgewandten Ende aus der Zylinderbohrung (18) herausragt. Das Gehäuseteil (20) weist einen den dem Pumpenarbeitsraum (22) abgewandten Endbereich der Zylinderbohrung (18) umgebenden zumindest annähernd zylinderförmigen Abschnitt (50) auf. Auf dem aus der Zylinderbohrung (18) ragenden Endbereich des Pumpenkolbens (12) ist ein Dichtring (52) angeordnet, der mit seinem Innenumfang mit einer Dichtlippe (54) am Pumpenkolben (12) anliegt. In Richtung der Längsachse (13) des Pumpenkolbens (12) gesehen zwischen dem Dichtring (52) und dem Ende der Zylinderbohrung (18) ist ein Abstreifring (60) angeordnet, der an seinem Innenumfang mit einer Abstreiflippe (62) am Pumpenkolben (12) anliegt und durch den am Pumpenkolben (12) aus der Zylinderbohrung (18) mitgeführtes Fördermedium zumindest teilweise abgestreift wird, so dass dieses nicht zum Dichtring (52) gelangt.The pump has at least one pump element (10), which in turn has a pump piston (12) driven in a lifting movement, which is displaceably guided in a cylinder bore (18) of a housing part (20) of the pump and defines a pump working space (22) in said pump , The pump piston (12) protrudes with its the pump working space (22) facing away from the cylinder bore (18) protrudes. The housing part (20) has an at least approximately cylindrical section (50) surrounding the end of the cylinder bore (18) remote from the pump working space (22). On the from the cylinder bore (18) projecting end portion of the pump piston (12) a sealing ring (52) is arranged, which rests with its inner circumference with a sealing lip (54) on the pump piston (12). In the direction of the longitudinal axis (13) of the pump piston (12) seen between the sealing ring (52) and the end of the cylinder bore (18) a scraper ring (60) is arranged, which at its inner circumference with a scraper lip (62) on the pump piston (12). is present and is at least partially stripped by the on the pump piston (12) from the cylinder bore (18) entrained fluid, so that this does not reach the sealing ring (52).
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einer Pumpe, insbesondere Kraftstoffhochdruckpumpe für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine nach der Gattung des Anspruchs 1. The invention relates to a pump, in particular high-pressure fuel pump for a fuel injection device of an internal combustion engine according to the preamble of claim 1.
Eine solche Pumpe in Form einer Kraftstoffhochdruckpumpe und eine Kraftstoffeinspritzeinrichtung 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 die thermische Belastung des Dichtrings verringert ist und somit dessen Verschleiß verringert und dessen Lebensdauer erhöht werden. The pump according to the invention with the features of claim 1 has the advantage that the thermal load of the sealing ring is reduced and thus reduces its wear and its life can be increased.
In den abhängigen Ansprüchen sind vorteilhafte Ausgestaltungen und Weiterbildungen der erfindungsgemäßen Pumpe angegeben. Die Ausbildung gemäß Anspruch 2 ermöglicht eine Abführung von heißem Fördermedium, so dass dieses nicht zum Dichtring gelangt. Die Ausbildung gemäß Anspruch 4 ermöglicht eine Zuführung von kühlem Fördermedium in den zweiten Raum und eine Durchströmung des ersten und zweiten Raums vom Fördermedium in den Ablauf. Durch die Ausbildung gemäß Anspruch 5 ist die Durchströmung des zweiten Raums weiter verbessert. Befestigung des Halteelements am Abschnitt des Gehäuseteils. Die Ausbildung gemäß Anspruch 6 ermöglicht eine gute Abstreiffunktion der Abstreiflippe. In the dependent claims advantageous refinements and developments of the pump according to the invention are given. The embodiment according to claim 2 allows a discharge of hot fluid so that it does not reach the sealing ring. The embodiment according to claim 4 allows a supply of cool fluid in the second space and a flow of the first and second space from the fluid into the drain. The embodiment according to claim 5, the flow through the second space is further improved. Attachment of the retaining element on the section of the housing part. The embodiment according to claim 6 allows a good Abstreiffunktion the wiper lip.
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
Die Pumpe weist ein Pumpengehäuse auf, das mehrteilig ausgebildet sein kann. Der Pumpenkolben
Der Pumpenkolben
Es ist ein Dichtring
In Richtung der Längsachse
Durch den Abstreifring
Zwischen dem Dichtring
Es kann vorgesehen sein, dass in den zweiten Raum
Beim Betrieb der Pumpe wird durch den Pumpenkolben
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 10305783 A1 [0002] DE 10305783 A1 [0002]
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310219284 DE102013219284A1 (en) | 2013-09-25 | 2013-09-25 | Pump, in particular high-pressure fuel pump for a fuel injection device of an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310219284 DE102013219284A1 (en) | 2013-09-25 | 2013-09-25 | Pump, in particular high-pressure fuel pump for a fuel injection device of an internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102013219284A1 true DE102013219284A1 (en) | 2015-03-26 |
Family
ID=52623600
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201310219284 Withdrawn DE102013219284A1 (en) | 2013-09-25 | 2013-09-25 | Pump, in particular high-pressure fuel pump for a fuel injection device of an internal combustion engine |
Country Status (1)
Country | Link |
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DE (1) | DE102013219284A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017032484A1 (en) * | 2015-08-21 | 2017-03-02 | Robert Bosch Gmbh | Pump, in particular a high-pressure fuel pump for a fuel injection device of an internal combustion engine |
CN108979924A (en) * | 2017-05-31 | 2018-12-11 | 罗伯特·博世有限公司 | High pressure fuel pump, high potential assembly and its plunger bushing |
CN109869252A (en) * | 2019-03-15 | 2019-06-11 | 江苏大学 | A kind of high frequency response fuel injector of Design of High Pressure Common Rail Diesel Engine |
CN114033665A (en) * | 2021-11-29 | 2022-02-11 | 深圳市恒永达科技有限公司 | Plunger pump, control method of plunger pump and storage medium |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10305783A1 (en) | 2003-02-12 | 2004-08-26 | Robert Bosch Gmbh | Piston membrane pump with oil-side demand control has throughflow control valve controlling quantity of second liquid exchanged via hydraulic connection between reservoir and working volume |
-
2013
- 2013-09-25 DE DE201310219284 patent/DE102013219284A1/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10305783A1 (en) | 2003-02-12 | 2004-08-26 | Robert Bosch Gmbh | Piston membrane pump with oil-side demand control has throughflow control valve controlling quantity of second liquid exchanged via hydraulic connection between reservoir and working volume |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017032484A1 (en) * | 2015-08-21 | 2017-03-02 | Robert Bosch Gmbh | Pump, in particular a high-pressure fuel pump for a fuel injection device of an internal combustion engine |
CN108979924A (en) * | 2017-05-31 | 2018-12-11 | 罗伯特·博世有限公司 | High pressure fuel pump, high potential assembly and its plunger bushing |
CN109869252A (en) * | 2019-03-15 | 2019-06-11 | 江苏大学 | A kind of high frequency response fuel injector of Design of High Pressure Common Rail Diesel Engine |
CN114033665A (en) * | 2021-11-29 | 2022-02-11 | 深圳市恒永达科技有限公司 | Plunger pump, control method of plunger pump and storage medium |
CN114033665B (en) * | 2021-11-29 | 2023-03-14 | 深圳市恒永达科技股份有限公司 | Plunger pump, control method of plunger pump and storage medium |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |