DE102008015547A1 - High pressure pump, particularly radial piston pump or in-line piston pump for fuel injection systems of air compressors or self-igniting internal combustion engines, comprises drive shaft that has cam attached to pump assembly - Google Patents

High pressure pump, particularly radial piston pump or in-line piston pump for fuel injection systems of air compressors or self-igniting internal combustion engines, comprises drive shaft that has cam attached to pump assembly

Info

Publication number
DE102008015547A1
DE102008015547A1 DE200810015547 DE102008015547A DE102008015547A1 DE 102008015547 A1 DE102008015547 A1 DE 102008015547A1 DE 200810015547 DE200810015547 DE 200810015547 DE 102008015547 A DE102008015547 A DE 102008015547A DE 102008015547 A1 DE102008015547 A1 DE 102008015547A1
Authority
DE
Germany
Prior art keywords
pressure pump
high
section
pump
characterized
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Withdrawn
Application number
DE200810015547
Other languages
German (de)
Inventor
Gerhard Meier
Armin Merz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE200810015547 priority Critical patent/DE102008015547A1/en
Publication of DE102008015547A1 publication Critical patent/DE102008015547A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404Details or component parts
    • F04B1/0439Supporting or guiding means for the pistons
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02Pumps 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
    • F02M59/10Pumps 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
    • F02M59/102Mechanical drive, e.g. tappets or cams
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44Details, 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
    • F02M59/48Assembling; Disassembling; Replacing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/02Fuel-injection apparatus having means for reducing wear

Abstract

A high-pressure pump (1) serves in particular as a radial or inline piston pump for fuel injection systems of air-compressing, self-igniting internal combustion engines. The high-pressure pump (1) has a pump assembly (13) and a drive shaft (6). Further, on the drive shaft (6) one of the pump assembly (13) associated with cam (9) is provided, wherein the pump assembly (13) comprises a piston (16) and a plunger body (27) via a on the cam (9) along running roller (25) are driven by the cam (9). In this case, the plunger body (27) is guided in a guide bore (129) of a housing part (3) .The plunger body (27) also carries along the piston (16) during its movement. The guide bore (12) is likewise adapted eccentrically (27) in sections, thereby achieving an anti-rotation lock in which an approximately coaxial alignment of the roller (25) with respect to an axis (31) of the drive shaft (6) is guaranteed.

Description

  • State of the art
  • The The invention relates to a high-pressure pump, in particular a radial or inline piston pump. Specifically, the invention relates to the field fuel pumps for fuel injection systems of air-compressing, self-igniting internal combustion engines.
  • From the DE 10 2005 046 670 A1 a high pressure pump for a fuel injector of an internal combustion engine is known. The known high-pressure pump has a multipart pump housing, in which at least one pump element is arranged. The pump element comprises a driven by a drive shaft in a stroke pump piston which is slidably guided in a cylinder bore of a portion of the pump housing and defines a pump working space therein. The pump piston is supported at least indirectly via a hollow cylindrical plunger on the drive shaft, wherein the plunger is slidably guided in a bore of a portion of the pump housing in the direction of the longitudinal axis of the pump piston. The plunger has in its outer shell a groove extending in the direction of its longitudinal axis, in which engages at least approximately radially to the longitudinal axis of the plunger in a part of the pump housing in a tangential direction to the plunger fixed ball for preventing rotation of the plunger.
  • The from the DE 10 2005 046 670 A1 known high pressure pump has the disadvantage that additional components are required, which are expensive to install. Furthermore, frictional forces are generated by the permanent application of the ball against the plunger, which lead to wear and possibly impair the function of the pump element. Furthermore, the other components are critical to wear.
  • Disclosure of the invention
  • The High-pressure pump according to the invention with the features of claim 1 has the advantage that a high pressure pump with a Anti-twist device for the pump assembly can be created largely dispensed with on additional components can be, resulting in a cost-effective production results. Specially susceptible to wear Components are saved, making a reliable and low-maintenance operation of the high-pressure pump over its service life is possible.
  • By the measures listed in the dependent claims are advantageous developments of specified in claim 1 High pressure pump possible.
  • In Advantageously, the eccentric portion of the plunger body formed by an eccentric ring. It is also advantageous that the eccentric ring with a cylindrical sleeve-shaped base body the plunger body is connected, for example by the eccentric ring in the cylindrical body pressed the plunger body or on this is pressed. This can be a simple way a design of the tappet body with an eccentric Section made, thereby producing a cost-effective allows the plunger body is. This is a high load capacity of the plunger body guaranteed.
  • Advantageous it is that the ram body as pressed part is configured and that the eccentric portion of the plunger body is formed by pressing. In this way, the plunger body For example, be designed in one piece, so that a cost-effective production and a high load capacity given is an optimized design of the plunger body allowed. The pressing part can be in relation to the particular application be post-processed suitable, for example by reworking the outside and by rubbing a through hole.
  • Advantageously, the asymmetrical portion of the guide bore is configured by an eccentric stage in the bore of the housing part. In this case, the asymmetrically designed guide bore can be produced with a single step tool by axial displacement. In this case, a diameter of the eccentric ring or the contour of the formula element or the like is matched with the eccentric stage in the guide bore, that no self-locking occurs here. In the design of an eccentric ring, the contour of the mold element or the like is also important to ensure that in the zero position, that is, in an ideal position of the plunger body with respect to the asymmetric guide bore, the eccentric portion is not engaged or in abutment with the guide bore , As a result, frictional forces can be avoided in the normal operation in which the plunger body and thus the other parts of the pump assembly are at least approximately aligned, since usually occurring during rolling a roller on the cam executives sufficient guidance of the plunger body and thus a ensure adequate alignment of the other components of the pump assembly. Advantageously, a cross-section of the eccentric portion of the plunger body is designed so that a substantially trapezoidal nose is provided, wherein the cross-section viewed perpendicular to the axis of the guide bore becomes. Furthermore, it is advantageous that an at least substantially triangular nose or an at least substantially rectangular, in particular square, nose is provided in cross section. A configured in this way nose for the design of the eccentric portion of the plunger body preferably has rounded edges in order to achieve an advantageous guidance of the plunger body at its eccentric portion in the guide bore, possibly occurring friction forces are reduced as possible.
  • Advantageous it is also that the guide bore thereby a to the Nose adapted asymmetric section has. Specially can thereby a certain angular range to the rotation of the plunger body relative to its initial position about the axis of the guide bore allows, that is allowed, is, given become. A given game is usually not critical and possibly for reliable operation the high pressure pump also required. In addition, it can limits the intervention of the anti-twist device to extreme cases so as to reduce the occurrence of frictional forces and thus a high efficiency of the high pressure pump is achieved.
  • Brief description of the drawings
  • preferred Embodiments of the invention are in the following Description with reference to the accompanying drawings, in which corresponding elements with matching reference numerals are provided, explained in more detail. It shows:
  • 1 a high pressure pump in a schematic, axial sectional view according to a first embodiment of the invention;
  • 2 the in 1 shown, designated II section of a housing of the high-pressure pump of the first embodiment of the invention;
  • 3 this in 2 excerpts shown housing from the designated III direction of view according to the first embodiment;
  • 4 an excerpted section through the 1 shown plunger body of the high-pressure pump according to the first embodiment of the invention;
  • 5 a plunger body of a high-pressure pump according to a second embodiment of the invention;
  • 6 the in 5 plunger body shown in the direction indicated by VI viewing direction according to a third embodiment of the invention;
  • 7 the in 6 shown plunger body according to a fourth embodiment of the invention and
  • 8th the in 6 shown plunger body according to a fifth embodiment of the invention.
  • embodiments the invention
  • 1 shows a high pressure pump 1 in a schematic, axial sectional view according to a first embodiment of the invention. The high pressure pump 1 can be used in particular as a radial or inline piston pump for fuel injection systems of air-compressing, self-igniting internal combustion engines. Specifically, the high pressure pump is suitable 1 for a fuel injection system with a fuel rail, a so-called common rail, which stores diesel fuel under high pressure. The high-pressure pump according to the invention 1 However, it is also suitable for other applications.
  • The high pressure pump 1 has a multi-part housing 2 on. In this embodiment, the housing consists 2 from the housing parts 3 . 4 . 5 , wherein the housing part 3 a main body, the housing part 4 a cylinder head and the housing part 5 one on the main body 3 attached flange represents.
  • The high pressure pump 1 has a drive shaft 6 on that at campsites 7 . 8th on the one hand in the housing part 5 and on the other hand in the housing part 3 is stored. Between the bearings 7 . 8th has the drive catfish 6 a cam 9 on. The cam 9 can also be configured as a multiple cam. Furthermore, the term "cam" also includes an embodiment of the cam 9 in which the drive shaft 6 an eccentric portion or the like.
  • The housing part 3 the high pressure pump 1 has a guide hole 12 on, in which a pump assembly 13 is arranged. The cam 9 is the pump assembly 13 assigned. Depending on the design of the high-pressure pump 1 It is also possible to provide a plurality of pump assemblies that correspond to the pump assembly 13 are designed. Such pump assemblies may correspond to the pump assembly 13 the cam 9 be assigned and / or one or more others, the cam 9 be associated with corresponding cam. Depending on the configuration, a radial or series piston pump can thereby be realized become.
  • The designed as a cylinder head housing part 4 has an approach 14 on, in the guide hole 12 extends. The approach 14 has a cylinder bore 15 on, in which a piston 16 in the direction of an axis 17 the guide hole 12 slidably guided. This displacement is by a double arrow 18 illustrated. The piston 16 limits a pump work space 19 in the cylinder bore 15 , There is an inlet valve 20 provided, via the fuel from a fuel channel 21 into the pump workroom 19 can be introduced. Further, an exhaust valve 22 provided via the high pressure fuel from the pump working space 19 to a fuel channel 23 is feasible. The fuel channel 23 may be connected to a common rail or the like, so that high-pressure fuel can be supplied to such a common rail.
  • The pump assembly 13 has a role 25 on top of a roller shoe 26 is included. The roller shoe 26 is in a substantially hollow cylindrical tappet body 27 used. Furthermore, the plunger body 27 with a disk-shaped driving element 28 connected to the piston 16 above a covenant 29 of the piston 16 encompasses, that is, the entrainment element 28 surrounds the piston 16 at one of the drive shaft 6 distant side of the covenant 29 so that the piston 16 about his covenant 29 in contact with the roller shoe 26 is held. Here is a piston spring 30 provided on the ram body 27 and / or the entrainment element 28 acts and thus the ram body 27 together with the piston 16 in the direction of the role 25 acted upon by a certain spring force. This causes the piston 16 with his covenant 29 , the roller shoe 26 , the role 25 and a tread of the cam 9 each against each other, and this mutual contact even at high speeds of the high-pressure pump 1 is guaranteed.
  • In operation of the high pressure pump 1 is characterized by the double arrow 18 illustrated float's reciprocation 16 achieved, so that the promotion of high-pressure fuel to a common rail or the like via the fuel channel 23 he follows.
  • The drive shaft 6 rotates around its axis during operation 31 , Furthermore, the role is running 25 on the cam 9 along, with an axis 32 the role 25 preferably at least approximately coaxial with the axis 31 the drive shaft 6 is oriented. There may be a certain amount of play for the orientation of the role 25 be required to ensure reliable operation of the high pressure pump 1 to enable. However, there is a risk that the axle 32 the role 25 excessively from its coaxial position to the axis 31 pivoted or tilted, causing the function of the high-pressure pump 1 impaired or even damaging elements of the high-pressure pump 1 can occur. Due to the varying distance of the roll 25 to the axis 31 and the associated forces in the system from the pump assembly 13 and the cam 9 is usually a guide and thus at least approximately coaxial alignment of the axis 32 the role 25 in relation to the axis 31 the drive shaft 6 reached. However, there is a limit to the pivoting or tilting of the roll 25 required. Specifically, this can prevent the role 25 already during commissioning of the high-pressure pump 1 is excessively pivoted or tilted from its desired position.
  • The high pressure pump 1 has an anti-rotation device in the area of the pump assembly 13 on. This is the guide hole 12 in terms of their axis 17 partially asymmetrical designed. In this embodiment, the guide bore 12 designed as a stepped bore, with an asymmetrical section 35 in the guide hole 12 is provided. In this asymmetrical section 35 is an eccentric section 36 of the plunger body 27 arranged. Due to the design of the eccentric section 36 and / or the asymmetric section 35 the guide hole 12 can be given a certain range in which a rotation of the plunger body 27 around the axis 17 possible and thus permissible. This allows a certain amount of play for the role 25 in her run on the cam 9 , Excessive pivoting, however, causes the eccentric section to engage 36 of the plunger body 27 on the wall of the guide hole 12 , so that the rotation of the tappet body 27 in relation to the axis 17 is limited. This will cause excessive pivoting or tilting of the roll 25 from its coaxial initial position to the axis 31 the drive shaft 6 avoided.
  • The embodiment of the high-pressure pump 1 of the first embodiment is described below with reference to the 2 to 4 described in further detail.
  • 2 shows the guide hole 12 in the designed as a basic body housing part 3 in an excerpted sectional view in which in the 1 with II designated section. Further elements of the high pressure pump 1 are omitted.
  • The guide hole 12 in the housing part 3 is configured as a stepped bore with an eccentric stage. Here, the guide bore 12 a fitting section 37 in which a sealing ring or the like can be inserted to a mounting of the cylinder head serving as the housing part 4 on the housing part serving as the base body 3 to enable. Furthermore, the guide bore 12 to the Einpassabschnitt 37 subsequent eccentric section 35 on, in which the guide bore 12 designed asymmetrically. The production of the eccentric section 35 the guide hole 12 can be done with a step tool, wherein in the embodiment of the eccentric portion 35 an axis shift from the axis 17 to an offset axis 17 ' he follows. Such an axial offset 38 is also in the 3 illustrated. Furthermore, the guide bore 12 a guide section 39 on, referring to the eccentric section 35 followed. Preferably, the guide portion extends 39 over most of the pilot hole 12 , The guide section 39 ensures the axial guidance of the plunger body 27 in relation to the axis 17 the guide hole 12 ,
  • 3 shows the in the 2 shown guide bore 12 in the housing part 3 of the housing 2 the high pressure pump 1 from the direction of view designated III. Here is the asymmetrical design of the guide hole 12 in her asymmetrical section 35 illustrated. Due to the misalignment 38 This results in an asymmetrical section 35 who is an eccentric 40 in the designed as a stepped bore guide bore 12 conditionally. There may be some play between the asymmetrical section 35 the guide hole 12 and the eccentric section 36 of the plunger body 27 exist to a certain pivotability of the plunger body 27 around the axis 17 and thus a certain play of the role 25 to enable.
  • 4 shows the in 1 shown plunger body 27 in an excerpted sectional view. Here, the plunger body 27 a cylindrical sleeve-shaped base body 45 in which an eccentric ring 46 is pressed. The eccentric ring 46 can also be on the main body 45 be pressed on. At the eccentric ring 46 is the eccentric section 36 provided that the eccentric section 36 of the plunger body 27 forms. Thus, the plunger body 27 configured substantially cylindrical sleeve-shaped, wherein the deviation from the cylindrical sleeve-shaped configuration by the eccentric portion 36 in the eccentric ring 46 results. The connection of the eccentric ring 46 with the main body 45 can also be done in other ways. In this way, a mechanically stable attachment of the eccentric ring 46 on the cylindrical sleeve-shaped base body 45 given, which is easy to manufacture and withstand the loads occurring.
  • 5 shows a plunger body 27 a high pressure pump 1 according to a second embodiment of the invention. The plunger body 27 is with a roller shoe 26 connected, the role 25 receives. Here is the plunger body 27 made in this embodiment as a molded part and thus in one piece. By pressing receives the plunger body 27 at least its outer contour, which may be reworked if necessary. By pressing is on the ram body 27 especially the eccentric section 36 designed, the corresponding function as in the in the 4 shown plunger body 27 of the first embodiment. The eccentric configuration may be, for example, by an axial offset with respect to an axis 17 '' of the plunger body 27 be given so that the eccentric section 36 in relation to one to the axis 17 '' offset axis 17 ''' has a circular cross-section. Here, in the mounted state, the axis 17 '' at least substantially congruent with the axis 17 the guide hole 12 while the axle 17 ''' of the plunger body 27 at least approximately congruent with the axis 17 ' the guide hole 12 is. However, there are some variations in the axial offset and the cross section of the eccentric section 36 possible to specify a desired game.
  • 6 shows the in 5 shown plunger body 27 from the viewing direction designated VI according to a third embodiment. In this embodiment, the plunger body 27 a substantially trapezoidal nose 47 with rounded edges 48 . 49 on. The presentation of the 6 thus illustrates the cross section of the plunger body 27 in the section 36 which is designed here as an asymmetrical section.
  • 7 shows the plunger body 27 according to a third embodiment of the invention. In this embodiment, the plunger body 27 a substantially triangular nose 47 with a rounded edge 48 on to the asymmetric section 36 to build.
  • Furthermore, the shows 8th a plunger body 27 which has a substantially rectangular, in particular square, nose 47 with edges 47 . 48 to form the asymmetric section.
  • The Invention is not limited to the described embodiments limited.
  • QUOTES INCLUDE IN THE DESCRIPTION
  • 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.
  • Cited patent literature
    • - DE 102005046670 A1 [0002, 0003]

Claims (12)

  1. High pressure pump ( 1 ), in particular radial or inline piston pump for fuel injection systems of air-compressing, self-igniting internal combustion engines, with at least one pump assembly ( 13 ) and a drive shaft ( 6 ), which at least one of the pump assembly ( 13 ) associated cam ( 9 ), wherein the pump assembly ( 13 ) a piston ( 16 ) and a tappet body ( 27 ), wherein the piston ( 16 ) of the cam ( 9 ) of the drive shaft ( 6 ) is at least indirectly drivable and wherein the plunger body ( 27 ) in a guide bore ( 12 ) of a housing part ( 3 ) and the piston ( 16 ), characterized in that the tappet body ( 27 ) at least in sections asymmetrically to an axis ( 17 ) of the guide bore ( 12 ) and that the guide bore ( 12 ) to the configuration of the plunger body ( 27 ) and at least partially asymmetrical to its axis ( 17 ) is configured.
  2. High-pressure pump according to claim 1, characterized in that the asymmetrical section ( 36 ) of the tappet body ( 27 ) is designed as an eccentric section.
  3. High-pressure pump according to claim 1 or 2, characterized in that the asymmetrical section ( 36 ) of the tappet body ( 27 ) by an eccentric ring ( 46 ) is formed.
  4. High-pressure pump according to claim 3, characterized in that the eccentric ring ( 46 ) with a cylindrical sleeve-shaped base body ( 45 ) of the tappet body ( 27 ) connected is.
  5. High-pressure pump according to claim 4, characterized in that the eccentric ring ( 46 ) in the cylindrical sleeve-shaped base body ( 45 ) of the tappet body ( 47 ) is pressed or pressed onto this.
  6. High-pressure pump according to claim 1 or 2, characterized in that the plunger body ( 27 ) is designed at least substantially as a pressing part and that the asymmetrical section ( 36 ) of the tappet body ( 27 ) is formed by pressing.
  7. High-pressure pump according to one of claims 1 to 6, characterized in that the asymmetrical section ( 35 ) of the guide bore ( 12 ) by an eccentric stage ( 40 ) in the guide bore ( 12 ) of the housing part ( 3 ) is configured.
  8. High-pressure pump according to one of claims 1 to 7, characterized in that a perpendicular to the axis ( 17 ) of the guide bore ( 12 ) considered cross-section of the asymmetric section ( 36 ) of the tappet body ( 27 ) an at least substantially trapezoidal nose ( 47 ) having.
  9. High-pressure pump according to one of claims 1 to 7, characterized in that a perpendicular to the axis ( 17 ) of the guide bore ( 12 ) considered cross-section of the asymmetric section ( 36 ) of the tappet body ( 27 ) an at least substantially triangular nose ( 47 ) having.
  10. High-pressure pump according to one of claims 1 to 6, characterized in that a perpendicular to the axis ( 17 ) of the guide bore ( 12 ) considered cross-section of the asymmetric section ( 36 ) of the tappet body ( 27 ) an at least substantially rectangular, in particular square, nose ( 47 ) having.
  11. High-pressure pump according to one of claims 8 to 10, characterized in that the nose ( 47 ) with one or more rounded edges ( 48 . 49 ) is configured.
  12. High-pressure pump according to one of claims 8 to 11, characterized in that the guide bore ( 12 ) one to the nose ( 47 ) adapted asymmetric section ( 35 ) having.
DE200810015547 2008-03-25 2008-03-25 High pressure pump, particularly radial piston pump or in-line piston pump for fuel injection systems of air compressors or self-igniting internal combustion engines, comprises drive shaft that has cam attached to pump assembly Withdrawn DE102008015547A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200810015547 DE102008015547A1 (en) 2008-03-25 2008-03-25 High pressure pump, particularly radial piston pump or in-line piston pump for fuel injection systems of air compressors or self-igniting internal combustion engines, comprises drive shaft that has cam attached to pump assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810015547 DE102008015547A1 (en) 2008-03-25 2008-03-25 High pressure pump, particularly radial piston pump or in-line piston pump for fuel injection systems of air compressors or self-igniting internal combustion engines, comprises drive shaft that has cam attached to pump assembly

Publications (1)

Publication Number Publication Date
DE102008015547A1 true DE102008015547A1 (en) 2009-10-01

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DE200810015547 Withdrawn DE102008015547A1 (en) 2008-03-25 2008-03-25 High pressure pump, particularly radial piston pump or in-line piston pump for fuel injection systems of air compressors or self-igniting internal combustion engines, comprises drive shaft that has cam attached to pump assembly

Country Status (1)

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DE (1) DE102008015547A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010031443A1 (en) 2010-07-16 2012-01-19 Robert Bosch Gmbh High pressure pump for fuel injector of internal combustion engine, has pump element, where spring element is designed as compression spring supported at pump piston or at plunger
DE102010031446A1 (en) 2010-07-16 2012-01-19 Robert Bosch Gmbh High pressure pump for fuel injector of combustion engine, has drive shaft supported in housing portion in bearing bore that is designed as slide bearings, where bearing bush is coated with PTFE in contact region of drive shaft
WO2012034739A1 (en) * 2010-09-15 2012-03-22 Robert Bosch Gmbh Method for producing a piston pump and piston pump
CN103998763A (en) * 2011-12-21 2014-08-20 博世株式会社 Fuel supply pump
IT201800007169A1 (en) * 2018-07-13 2020-01-13 Pumping unit for supplying fuel, preferably diesel fuel, to an internal combustion engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005046670A1 (en) 2005-09-29 2007-04-05 Robert Bosch Gmbh High pressure pump for fuel injection device of internal combustion engine, has ball indirectly fixed in part of base plate in tangential direction to tappet and engaged in groove approximately radial to longitudinal axis of tappet

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005046670A1 (en) 2005-09-29 2007-04-05 Robert Bosch Gmbh High pressure pump for fuel injection device of internal combustion engine, has ball indirectly fixed in part of base plate in tangential direction to tappet and engaged in groove approximately radial to longitudinal axis of tappet

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010031443A1 (en) 2010-07-16 2012-01-19 Robert Bosch Gmbh High pressure pump for fuel injector of internal combustion engine, has pump element, where spring element is designed as compression spring supported at pump piston or at plunger
DE102010031446A1 (en) 2010-07-16 2012-01-19 Robert Bosch Gmbh High pressure pump for fuel injector of combustion engine, has drive shaft supported in housing portion in bearing bore that is designed as slide bearings, where bearing bush is coated with PTFE in contact region of drive shaft
WO2012034739A1 (en) * 2010-09-15 2012-03-22 Robert Bosch Gmbh Method for producing a piston pump and piston pump
CN103119299A (en) * 2010-09-15 2013-05-22 罗伯特·博世有限公司 Method for producing a piston pump and piston pump
CN103119299B (en) * 2010-09-15 2015-11-25 罗伯特·博世有限公司 For the manufacture of method and the reciprocating pump of reciprocating pump
US9808895B2 (en) 2010-09-15 2017-11-07 Robert Bosch Gmbh Method for producing a piston pump
CN103998763A (en) * 2011-12-21 2014-08-20 博世株式会社 Fuel supply pump
US9435306B2 (en) 2011-12-21 2016-09-06 Robert Bosch Gmbh Fuel supply pump
CN103998763B (en) * 2011-12-21 2017-04-05 罗伯特·博世有限公司 Fuel feed pump
IT201800007169A1 (en) * 2018-07-13 2020-01-13 Pumping unit for supplying fuel, preferably diesel fuel, to an internal combustion engine

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Effective date: 20150326