DE102009027689A1 - Fuel high-pressure pump for fuel injection system of internal-combustion engine of motor vehicle, has slots extending from central through-hole of spring disk, which is supported at guided piston in axial direction - Google Patents
Fuel high-pressure pump for fuel injection system of internal-combustion engine of motor vehicle, has slots extending from central through-hole of spring disk, which is supported at guided piston in axial direction Download PDFInfo
- Publication number
- DE102009027689A1 DE102009027689A1 DE200910027689 DE102009027689A DE102009027689A1 DE 102009027689 A1 DE102009027689 A1 DE 102009027689A1 DE 200910027689 DE200910027689 DE 200910027689 DE 102009027689 A DE102009027689 A DE 102009027689A DE 102009027689 A1 DE102009027689 A1 DE 102009027689A1
- Authority
- DE
- Germany
- Prior art keywords
- piston
- spring plate
- pressure fuel
- fuel pump
- supported
- 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- Withdrawn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
- F04B1/0439—Supporting or guiding means for the pistons
-
- 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
Abstract
Description
Stand der TechnikState of the art
Die Erfindung betrifft eine Kraftstoffhochdruckpumpe für ein Kraftstoffeinspritzsystem einer Brennkraftmaschine, mit mindestens einem Pumpenelement, das einen hin und her bewegbar geführten Kolben und eine Kolbenfeder umfasst, die sich an einem Federteller abstützt, der in axialer Richtung an dem Kolben abgestützt ist.The The invention relates to a high-pressure fuel pump for a Fuel injection system of an internal combustion engine, with at least a pump element, which has a reciprocating piston and a piston spring, which is supported on a spring plate, which is supported in the axial direction on the piston.
Aus
der deutschen Offenlegungsschrift
Offenbarung der ErfindungDisclosure of the invention
Aufgabe der Erfindung ist es, eine Kraftstoffhochdruckpumpe gemäß dem Oberbegriff des Anspruchs 1 zu schaffen, die einfach aufgebaut und kostengünstig herstellbar ist.task The invention is a high-pressure fuel pump according to the To provide preamble of claim 1, which is simple and inexpensive can be produced.
Die Aufgabe ist bei einer Kraftstoffhochdruckpumpe für ein Kraftstoffeinspritzsystem einer Brennkraftmaschine, mit mindestens einem Pumpenelement, das einen hin und her bewegbar geführten Kolben und eine Kolbenfeder umfasst, die sich an einem Federteller abstützt, der in axialer Richtung an dem Kolben abgestützt ist, dadurch gelöst, dass der Federteller Schlitze aufweist, die von einem zentralen Durchgangsloch des Federtellers ausgehen. Der Federteller hat im Wesentlichen die Gestalt einer Kreisringscheibe, die aus Blech, insbesondere Federstahlblech, gebildet ist. Durch die Schlitze wird die Montage des Federtellers dahingehend erleichtert, dass der Federteller in Umfangsrichtung zwischen den Schlitzen so verformbar ist, dass er auf einfache Art und Weise in eine Ringnut einschnappt, die an dem Kolben vorgesehen ist.The Task is with a high-pressure fuel pump for a Fuel injection system of an internal combustion engine, with at least a pump element, which has a reciprocating piston and a piston spring, which is supported on a spring plate, which is supported in the axial direction on the piston, characterized solved that the spring plate has slots that of emanating a central through hole of the spring plate. The spring plate has essentially the shape of a circular disk, made of Sheet metal, in particular spring steel sheet, is formed. Through the slots the assembly of the spring plate is facilitated so that the spring plate in the circumferential direction between the slots so deformable is that he simply snaps into an annular groove, which is provided on the piston.
Ein bevorzugtes Ausführungsbeispiel der Kraftstoffhochdruckpumpe ist dadurch gekennzeichnet, dass die Schlitze in radialen Richtungen verlaufen. Die Schlitze gehen von dem zentralen Durchgangsloch des Federtellers aus und erstrecken sich radial nach außen.One preferred embodiment of the high-pressure fuel pump is characterized in that the slots in radial directions run. The slots go from the central through hole of the Spring plate and extend radially outward.
Ein weiteres bevorzugtes Ausführungsbeispiel der Kraftstoffhochdruckpumpe ist dadurch gekennzeichnet, dass der Federteller durch die Schlitze radial innen in Schnappelemente unterteilt ist. Die Schnappelemente haben im Wesentlichen die Gestalt von Kreissektoren. Radial außen weist der Federteller einen geschlossenen Ringkörper auf.One Another preferred embodiment of the high-pressure fuel pump is characterized in that the spring plate through the slots radially inside is divided into snap elements. The snap elements have essentially the shape of circular sectors. Radially outside the spring plate has a closed annular body.
Ein weiteres bevorzugtes Ausführungsbeispiel der Kraftstoffhochdruckpumpe ist dadurch gekennzeichnet, dass die Schlitze radial außen in Ausnehmungen münden, die in dem Federteller vorgesehen sind. Die Ausnehmungen oder Aussparungen schaffen einerseits Strömungsquerschnitte, die den Durchtritt von Kraftstoff ermöglichen. Andererseits wird durch die Ausnehmungen oder Aussparungen die Elastizität des Federtellers vergrößert. Dadurch wird die Montage des Federtellers in der Ringnut weiter vereinfacht.One Another preferred embodiment of the high-pressure fuel pump is characterized in that the slots are radially outward open in recesses provided in the spring plate are. The recesses or recesses on the one hand create flow cross-sections, which allow the passage of fuel. On the other hand will through the recesses or recesses the elasticity enlarged the spring plate. This will be the Assembly of the spring plate in the annular groove further simplified.
Ein weiteres bevorzugtes Ausführungsbeispiel der Kraftstoffhochdruckpumpe ist dadurch gekennzeichnet, dass die Ausnehmungen nierenförmig ausgebildet sind. Die nierenförmigen Ausnehmungen erstrecken sich radial außerhalb des zentralen Durchgangslochs des Federtellers.One Another preferred embodiment of the high-pressure fuel pump is characterized in that the recesses are kidney-shaped are. The kidney-shaped recesses extend radially outside the central through hole of the spring plate.
Ein weiteres bevorzugtes Ausführungsbeispiel der Kraftstoffhochdruckpumpe ist dadurch gekennzeichnet, dass die Schlitze gleichmäßig über einen Umfang des Federtellers verteilt sind. Gemäß einem Ausführungsbeispiel ist der Federteller mit vier Schlitzen ausgestattet, die jeweils in eine nierenförmige Ausnehmung münden.One Another preferred embodiment of the high-pressure fuel pump is characterized in that the slots evenly over a circumference of the spring plate are distributed. According to one Embodiment is the spring plate with four slots equipped, each in a kidney-shaped recess lead.
Ein weiteres bevorzugtes Ausführungsbeispiel der Kraftstoffhochdruckpumpe ist dadurch gekennzeichnet, dass der Federteller in eine Ringnut eingreift, die an dem Kolben vorgesehen ist, um den Federteller in axialer Richtung an dem Kolben abzustützen. Durch die erfindungsgemäßen Schlitze beziehungsweise die Unterteilung des Federtellers radial innen in Schnappelemente wird die Montage des Federtellers in die Ringnut erheblich vereinfacht.One Another preferred embodiment of the high-pressure fuel pump is characterized in that the spring plate engages in an annular groove, which is provided on the piston to the spring plate in axial Support direction on the piston. By the invention Slots or the subdivision of the spring plate radially inside snap elements, the assembly of the spring plate in the Ring groove considerably simplified.
Alternativ oder zusätzlich ist die oben angegebene Aufgabe bei einer Kraftstoffhochdruckpumpe für ein Kraftstoffeinspritzsystem einer Brennkraftmaschine, mit mindestens einem Pumpenelement, das einen hin und her bewegbar geführten Kolben und eine Kolbenfeder umfasst, die sich an einem Federteller abstützt, der in axialer Richtung an dem Kolben abgestützt ist, insbesondere bei einer Kraftstoffhochdruckpumpe, wie sie vorab beschrieben ist, dadurch gelöst, dass der Federteller in axialer Richtung an einem Stützring abgestützt ist, der in axialer Richtung von einem Absatz des Kolbens beabstandet ist, um eine Ringnut zu bilden, in welche der Federteller eingreift. Der Stützring liefert den Vorteil, dass auch herkömmliche Federteller, die keine Schlitze aufweisen, verwendet werden, um die Kolbenfeder an dem Kolben abzustützen.Alternatively or additionally, the above-mentioned object is in a high-pressure fuel pump for a fuel injection system of an internal combustion engine, comprising at least one pump element comprising a reciprocally movable piston and a piston spring, which is supported on a spring plate which is supported in the axial direction of the piston is, in particular in a high-pressure fuel pump, as described above, achieved in that the spring plate is supported in the axial direction on a support ring which is spaced in the axial direction of a shoulder of the piston to form an annular groove, in which the spring plate intervenes. The support ring provides the advantage that even conventional spring plates that have no slots, used to support the piston spring on the piston.
Ein weiteres bevorzugtes Ausführungsbeispiel der Kraftstoffhochdruckpumpe ist dadurch gekennzeichnet, dass der Stützring an einem Ende des Kolbens befestigt ist, das einen reduzierten Außendurchmesser aufweist. Der reduzierte Außendurchmesser des Kolbens entspricht vorzugsweise dem Innendurchmesser des Stützrings. Dadurch wird die Montage des Stützrings erheblich vereinfacht.One Another preferred embodiment of the high-pressure fuel pump Is characterized in that the support ring on a The end of the piston is fixed, which has a reduced outside diameter having. The reduced outer diameter of the piston corresponds preferably the inner diameter of the support ring. Thereby the assembly of the support ring is considerably simplified.
Ein weiteres bevorzugtes Ausführungsbeispiel der Kraftstoffhochdruckpumpe ist dadurch gekennzeichnet, dass der Stützring durch eine Presspassung an dem Ende des Kolbens befestigt ist. Alternativ kann der Stützring stoffschlüssig, zum Beispiel durch Kleben oder Schweißen, an dem Ende des Kolbens befestigt sein. Es ist auch möglich, den Stützring formschlüssig, zum Beispiel durch eine Schraubverbindung, an dem Ende des Kolbens zu befestigen.One Another preferred embodiment of the high-pressure fuel pump is characterized in that the support ring by a Press fit is attached to the end of the piston. Alternatively, you can the support ring cohesively, for example by Gluing or welding, attached to the end of the piston be. It is also possible, the support ring form-fitting, for example by a screw connection, at the end of the piston to fix.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der unter Bezugnahme auf die Zeichnung verschiedene Ausführungsbeispiele im Einzelnen beschrieben sind.Further Advantages, features and details of the invention will become apparent the following description, with reference to the drawing various embodiments described in detail are.
Kurze Beschreibung der ZeichnungShort description of the drawing
Es zeigen:It demonstrate:
Beschreibung der AusführungsbeispieleDescription of the embodiments
In
Jedes
Pumpenelement umfasst eine Elementbohrung
Ein
Ende des Hochdruckkolbens
Mit
seinem dem Arbeitsraum abgewandten Ende
In
der Elementbohrung
An
dem Federteller
Im
Betrieb der Kraftstoffhochdruckpumpe
In
Durch
die Schlitze
In
Bei
dem in
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES 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 The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 19705205 A1 [0002] - DE 19705205 A1 [0002]
- - EP 1519033 A2 [0002] EP 1519033 A2 [0002]
- - DE 10147981 A1 [0002] - DE 10147981 A1 [0002]
- - DE 10017114 A1 [0002] - DE 10017114 A1 [0002]
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910027689 DE102009027689A1 (en) | 2009-07-14 | 2009-07-14 | Fuel high-pressure pump for fuel injection system of internal-combustion engine of motor vehicle, has slots extending from central through-hole of spring disk, which is supported at guided piston in axial direction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910027689 DE102009027689A1 (en) | 2009-07-14 | 2009-07-14 | Fuel high-pressure pump for fuel injection system of internal-combustion engine of motor vehicle, has slots extending from central through-hole of spring disk, which is supported at guided piston in axial direction |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009027689A1 true DE102009027689A1 (en) | 2011-01-20 |
Family
ID=43382670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200910027689 Withdrawn DE102009027689A1 (en) | 2009-07-14 | 2009-07-14 | Fuel high-pressure pump for fuel injection system of internal-combustion engine of motor vehicle, has slots extending from central through-hole of spring disk, which is supported at guided piston in axial direction |
Country Status (1)
Country | Link |
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DE (1) | DE102009027689A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102493939A (en) * | 2011-12-15 | 2012-06-13 | 中国石油集团钻井工程技术研究院 | Combined-type single-plunger hydraulic pump for underground guiding energy acquiring device |
WO2012146428A1 (en) * | 2011-04-27 | 2012-11-01 | Robert Bosch Gmbh | Plate spring for a plunger assembly of a high-pressure pump, and high-pressure pump |
WO2012146427A1 (en) * | 2011-04-27 | 2012-11-01 | Robert Bosch Gmbh | Spring washer for a plunger assembly of a high pressure pump and high pressure pump |
ITMI20110976A1 (en) * | 2011-05-30 | 2012-12-01 | Bosch Gmbh Robert | PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19705205A1 (en) | 1997-02-12 | 1998-08-13 | Bosch Gmbh Robert | Piston pump, esp. high pressure fuel injection pump for IC engine |
DE10017114A1 (en) | 2000-04-06 | 2001-10-11 | Schaeffler Waelzlager Ohg | Pump piston with spring plate for high pressure fuel pump spring plate is of thin-walled light-weight deep-drawn or extruded material and connected to piston by welding or clamping etc. |
DE10147981A1 (en) | 2001-09-28 | 2003-04-24 | Siemens Ag | Connecting element for piston movable inside cylinder by means of re-adjusting element, consists of two parts with first part in piston cavity |
EP1519033A2 (en) | 2003-09-25 | 2005-03-30 | Robert Bosch Gmbh | Piston pump, particularly high pressure piston pump |
-
2009
- 2009-07-14 DE DE200910027689 patent/DE102009027689A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19705205A1 (en) | 1997-02-12 | 1998-08-13 | Bosch Gmbh Robert | Piston pump, esp. high pressure fuel injection pump for IC engine |
DE10017114A1 (en) | 2000-04-06 | 2001-10-11 | Schaeffler Waelzlager Ohg | Pump piston with spring plate for high pressure fuel pump spring plate is of thin-walled light-weight deep-drawn or extruded material and connected to piston by welding or clamping etc. |
DE10147981A1 (en) | 2001-09-28 | 2003-04-24 | Siemens Ag | Connecting element for piston movable inside cylinder by means of re-adjusting element, consists of two parts with first part in piston cavity |
EP1519033A2 (en) | 2003-09-25 | 2005-03-30 | Robert Bosch Gmbh | Piston pump, particularly high pressure piston pump |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012146428A1 (en) * | 2011-04-27 | 2012-11-01 | Robert Bosch Gmbh | Plate spring for a plunger assembly of a high-pressure pump, and high-pressure pump |
WO2012146427A1 (en) * | 2011-04-27 | 2012-11-01 | Robert Bosch Gmbh | Spring washer for a plunger assembly of a high pressure pump and high pressure pump |
CN103492714A (en) * | 2011-04-27 | 2014-01-01 | 罗伯特·博世有限公司 | Spring washer for a plunger assembly of a high pressure pump and high pressure pump |
CN103492714B (en) * | 2011-04-27 | 2016-10-12 | 罗伯特·博世有限公司 | The spring base of push-rod assembly and high-pressure pump for high-pressure pump |
ITMI20110976A1 (en) * | 2011-05-30 | 2012-12-01 | Bosch Gmbh Robert | PUMPING GROUP FOR FUEL SUPPLEMENTATION, PREFERABLY GASOIL, TO AN INTERNAL COMBUSTION ENGINE |
WO2012163576A1 (en) * | 2011-05-30 | 2012-12-06 | Robert Bosch Gmbh | Pump unit for supplying fuel, preferably diesel oil, to an internal combustion engine |
CN102493939A (en) * | 2011-12-15 | 2012-06-13 | 中国石油集团钻井工程技术研究院 | Combined-type single-plunger hydraulic pump for underground guiding energy acquiring device |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |