EP1552145A1 - High pressure pump, especially for a fuel injection device in an internal combustion engine - Google Patents

High pressure pump, especially for a fuel injection device in an internal combustion engine

Info

Publication number
EP1552145A1
EP1552145A1 EP20030807731 EP03807731A EP1552145A1 EP 1552145 A1 EP1552145 A1 EP 1552145A1 EP 20030807731 EP20030807731 EP 20030807731 EP 03807731 A EP03807731 A EP 03807731A EP 1552145 A1 EP1552145 A1 EP 1552145A1
Authority
EP
European Patent Office
Prior art keywords
high
pressure
housing
14a
pump
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
Application number
EP20030807731
Other languages
German (de)
French (fr)
Other versions
EP1552145B1 (en
Inventor
Burkhard Boos
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
Priority to DE10247142 priority Critical
Priority to DE2002147142 priority patent/DE10247142A1/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to PCT/DE2003/002061 priority patent/WO2004033905A1/en
Publication of EP1552145A1 publication Critical patent/EP1552145A1/en
Application granted granted Critical
Publication of EP1552145B1 publication Critical patent/EP1552145B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • F02M59/04Pumps 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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps
    • F02M59/06Pumps 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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps with cylinders arranged radially to driving shaft, e.g. in V or star arrangement
    • 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
    • F02M59/08Pumps 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 two or more pumping elements with conjoint outlet or several pumping elements feeding one engine cylinder
    • 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/007Cylinder heads
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16Casings; Cylinders; Cylinder liners or heads; Fluid connections

Abstract

The invention relates to a high pressure pump comprising a pump housing (10, 12, 14) wherein a plurality of pump elements (16) are arranged. Said pump elements (16) transport a liquid at high pressure to a common high pressure connection (42) via a high pressure channel system. Said pump housing comprises a housing body (10), and for each pump element (16), a housing cover (14) which is connected to the housing body (10) and which covers said pump elements. In the housing body (10), the high pressure channel system comprises high pressure bores (52, 54) which extend in a continuous manner without any out backs and which are concentrated in the transition area between the housing body (10) and one of the housing covers (14a) or between one of the housing covers (14a) and the common high pressure connection (42).

Description


   <Desc / Clms Page number 1>
 



  PRIOR ART The invention is based on a high pressure pump, in particular for a fuel injection device for an internal combustion engine, according to the preamble of claim 1.



  Such a high pressure pump is known from DE 198 02 476 A1. This high-pressure pump has a pump housing in which several pump elements are arranged. The pump elements deliver fuel to a common high-pressure connection via a high-pressure duct system. The pump housing of the high-pressure pump is formed in one piece and the high-pressure duct system has high-pressure bores running through the pump housing, which open into one another and thereby form intersections. At high pressures, which are required for fuel injection devices to achieve high performance and low pollutant emissions in internal combustion engines, there are high loads on the pump housing.

   The intersections of the high-pressure bores result in voltage peaks in the pump housing, according to which the pump housing must be dimensioned and designed with regard to the material. A complex hardness treatment of the pump housing is also required here. The production of the high pressure pump is expensive for these reasons.

 <Desc / Clms Page number 2>

 



  Advantages of the invention The high-pressure pump according to the invention with the features according to claim 1 has the advantage that the housing body is less stressed due to the lack of intersections and can therefore be manufactured from a less expensive material and in a simpler manner, making the manufacture of the high-pressure pump less expensive overall , Boreholes with intersections are usually present in the housing covers, so that they have to be made of material with appropriate strength anyway, and further intersections of the high-pressure boreholes that occur there do not lead to increased expenditure.



  Advantageous refinements and developments of the high-pressure pump according to the invention are specified in the dependent claims.



  DRAWING Two exemplary embodiments of the invention are shown in the drawing and explained in more detail in the description below. 1 shows a high-pressure pump in a longitudinal section, FIG. 2 shows the high-pressure pump in a cross-section along line II-II in FIG. 1 according to a first exemplary embodiment, and FIG. 3 shows the high-pressure pump in cross-section according to a second exemplary embodiment.



  DESCRIPTION OF THE EXEMPLARY EMBODIMENTS FIGS. 1 to 3 show a high-pressure pump which is provided in particular for a fuel injection device for an internal combustion engine, for example a motor vehicle. The high-pressure pump delivers fuel under high pressure of up to 2000 bar,

 <Desc / Clms Page number 3>

 For example, in a memory from which fuel is taken for injection on the internal combustion engine. The high-pressure pump has a multi-part pump housing, which has a housing body 10, a flange part 12 and housing cover 14 connected to the housing body 10. Several, for example three, pump elements 16 distributed uniformly over the circumference are arranged in the pump housing.



  In the housing body 10 and the flange part 12, a drive shaft 18 is rotatably mounted, through which the pump elements 16 are driven. The drive shaft 18 is rotatably mounted about an axis 19 via a bearing 20 in the housing body 10 and via a bearing 22 in the flange part 12 and is driven in a manner not shown by the internal combustion engine. The drive shaft 18 has an eccentric section 24 on which a cam ring 26 is mounted. The pump elements 16 each have a pump piston 28, which is slidably guided in a cylinder bore 30 which extends at least approximately radially to the drive shaft 18. The cylinder bores 30 of the pump elements 16 can be formed in the housing body 10 or in the housing covers 14.

   For each pump element 16, a housing cover 14 is provided which covers this radially with respect to the axis of rotation 19 of the drive shaft 18. The pump piston 28 of each pump element 16 is supported with its piston foot 29 on the lifting ring 26, the piston foot 29 being held in contact with the lifting ring 26 by a spring 32, which is supported on the one hand on the housing body 10 or the housing cover 14 and on the other hand on the piston foot 29 ,



  The pump piston 28 of each pump element 16 delimits one pump working chamber 34 in the cylinder bore 30 with its end face. The pump work chamber 34 can be connected to an inlet valve 36 opening into the pump work chamber 34 and connected to a fuel inlet channel 38 in which low pressure prevails. The

 <Desc / Clms Page number 4>

 Pump working chamber 34 can also be connected to the accumulator by an outlet valve 40 opening towards the accumulator via a high-pressure duct system which runs in the housing body 10 and in the housing cover 14 and is explained in more detail below. When the drive shaft 18 rotates, the pump pistons 28 are driven in a lifting movement via the eccentric section 24 and the cam ring 26.

   When the respective pump piston 28 moves radially inward, it executes a suction stroke, the respective inlet valve 36 being opened, so that fuel flows into the respective pump working chamber 34 via the fuel inlet channel 38, while the respective outlet valve 40 is closed. When the respective pump piston 28 moves radially outward, it executes a delivery stroke, the respective inlet valve 36 being closed and the fuel compressed by the pump piston 28 passing through the opened outlet valve 40 under high pressure and into the accumulator via the high-pressure duct system.



  A high-pressure connection 42 is arranged on a housing cover 14a, to which a high-pressure line 44 leading to the reservoir is connected. The fuel delivered by the pump elements 16 is conducted via the high-pressure duct system to the high-pressure connection 42 common to all pump elements 16. The high-pressure connection 42 can be arranged on the housing cover 14a with any orientation. The respective inlet valve 36 and / or the respective outlet valve 40 of each pump element 16 can be arranged in the respective housing cover 14a, b, c.



  The high-pressure duct system in the housing body 10 and in the housing covers 14a, b, c is explained in more detail below with reference to FIG. In the two housing covers 14b, c, on which the high-pressure connection 42 is not arranged, one leads to the respective outlet valve 40

 <Desc / Clms Page number 5>

 Bore 50 towards the housing body 10. The bores 50 run at least approximately radially to the axis of rotation 19 of the drive shaft 18. The orifices of the bores 50 can be widened in diameter, for example conical or spherical. The housing covers 14a, b, c and the housing body 10 have mutually facing, at least approximately flat surfaces 11 and 15, with which they abut one another.



  High-pressure bores 52 and 54 run in the housing body 10, each of which adjoins the bores 50 of the two housing covers 14b, c and which lead to the housing cover 14a on which the common high-pressure connection 42 is arranged. A recess 56 is made in each of the surfaces 15 of the housing body 10 facing the housing covers 14b, c, and the high-pressure bore 52 or 54 opens into the at least approximately flat bottom 57 thereof. The mouth of the high pressure bore 52 or 54 at the bottom 57 of the recess 56 is preferably rounded in each case. This can be done with a form drill, which can be attached to the flat bottom 57 of the recess 56. The depressions 56 each have a larger cross section than the high-pressure bores 52, 54.

   In each of the recesses 56, a sealing ring 58 surrounding the high-pressure bores 52, 54 is inserted, through which the transition from the bore 50 in the housing cover 14b, c to the high-pressure bore 52 and 54 in the housing part 10 is sealed.



  In the first exemplary embodiment illustrated in FIG. 2, a depression 60 is made in the surface 11 of the housing body 10 facing the housing cover 14a, which has an at least approximately flat bottom 61. The two high-pressure bores 52 and 54 in the housing body 10 open into the recess 60 at a distance from one another. The cross section of the recess 60 is thus larger than the sum of the diameters of the two high-pressure bores 52, 54.



  The mouth of the high pressure bores 52, 54 at the bottom 61 of the

 <Desc / Clms Page number 6>

 Indentation 60 is preferably rounded in each case, which in turn can be easily produced by means of a form drill that can be attached to flat bottom 61 of indentation 60. A sealing ring 62 surrounding the high-pressure bores 52, 54 is inserted into the recess 60. A bore 50, which is arranged at least approximately centrally to the recess 60 and leads to the common high-pressure connection 42, is introduced in the housing cover 14a. The bore 50 extends at least approximately radially to the axis of rotation 19 of the drive shaft 18. The opening of the bore 50 facing the recess 60 can be widened in diameter, for example conical or rounded. The transition from the high-pressure bores 52, 54 in the housing body 10 to the bore 50 in the housing cover 14a is sealed by the sealing ring 62.

   The bore 50 in the housing cover 14a and the outlet of the outlet valve 40 arranged in the housing cover 14a lead to the common high-pressure connection 42. The high-pressure bores 52, 54 run in the housing body 10 without intersections and are brought together in the recess 60 in the region of the transition from the housing body 10 to the housing cover 14a , The stress on the housing body 10 is kept so low that it can be produced from inexpensive metal with sufficient strength and without special hardness treatment such as steel or, at a lower pressure generated by the pump elements 16, also from light metal such as aluminum.

   Alternatively, when using a metal with high strength, as is required when the high-pressure bores run with intersections, the pressure generated by the high-pressure pump can be increased and nevertheless sufficient durability of the housing body 10 can be ensured. The housing covers 14a, b, c have intersections at the transition of the outlet of the respective outlet valve 40 into the bore 50 and are made of metal with a correspondingly higher strength than

 <Desc / Clms Page number 7>

 the housing body 10 is produced, for example from hardened steel.



  FIG. 3 shows the high-pressure pump according to a second exemplary embodiment, in which the structure is essentially the same as in the first exemplary embodiment and only the deviating features are explained below. Two separate recesses 160 are made in the surface 11 of the housing body 10 facing the housing cover 14a, a high-pressure bore 52 or 54 opening into each recess 160. The depressions 160 each have an at least approximately flat bottom 161, and the mouth of the high-pressure bore 52 or 54 in the respective depression 160 is preferably rounded. Correspondingly, two bores 152, 154 are made in the housing cover 14a, which continue the high-pressure bores 52, 54 towards the common high-pressure connection 42.

   A sealing ring 162, which surrounds the respective high-pressure bore 52 or 54, is inserted into each recess 160 in order to seal the transition from the housing body 10 to the housing cover 14a. In the second exemplary embodiment, too, the high-pressure bores 52, 54 in the housing body 10 run without intersections and there are intersections only in the housing cover 14 a.

Claims

1. High-pressure pump, in particular for a fuel injection device of an internal combustion engine, with a pump housing (10, 12, 14) in which a plurality of pump elements (16) are arranged, with the pump elements (16) providing liquid under high pressure via a high-pressure duct system to a common high-pressure connection (42) is conveyed, characterized in that the pump housing has a housing body (10) and for each pump element (16) has a housing cover (14) covering it and connected to the housing body (10) and that the high-pressure duct system in the housing body (10) is free of intersections has high-pressure bores (52, 54) which are brought together in the region of the transition from the housing body (10) to one of the housing covers (14a) or in one of the housing covers (14a) to form the common high-pressure connection (42).
2. High-pressure pump according to claim 1, characterized in that the common high-pressure connection (42) is arranged on the housing cover (14a).
3. High-pressure pump according to claim 1 or 2, characterized in that the high-pressure bores (52, 54) are brought together in the region of the transition from the housing body (10) to the housing cover (14a) and in a surface (11) facing the housing cover (14a) ) of the housing body (10) introduced recess (60) open from  <Desc / Clms Page number 9>  which continues a single bore (50) in the housing cover (14a) to the common high-pressure connection (42).
4. High-pressure pump according to claim 3, characterized in that the bottom (61) of the recess (60) is at least approximately flat and that the mouths of the high-pressure bores (52, 54) on the bottom (61) of the recess (60) are rounded.
5. High-pressure pump according to claim 1 or 2, characterized in that the high-pressure bores (52, 54) open into a recess (160) made in a surface (11) of the housing body (10) facing the housing cover (14a) that separate extensions (152, 154) of the high-pressure bores (52, 54) run in the housing cover (14a) and are brought together in the housing cover (14a) towards the common high-pressure connection (42).
6. High-pressure pump according to claim 5, characterized in that the bottom (161) of the depressions (160) is at least approximately flat and that the mouths of the high-pressure bores (52, 54) on the bottom (161) of the depressions (160) are each rounded ,
7. High-pressure pump according to one of claims 3 to 6, characterized in that in the recess (60) or the recesses (160) each have a sealing element (62; 162) for sealing the transition from the housing body (10) to the housing cover (14a) is used.
8. High-pressure pump according to one of the preceding claims, characterized in that the housing body (10) consists of a metal with lower strength than the housing cover (14).
EP20030807731 2002-10-09 2003-06-20 High pressure pump, especially for a fuel injection device in an internal combustion engine Active EP1552145B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE10247142 2002-10-09
DE2002147142 DE10247142A1 (en) 2002-10-09 2002-10-09 High pressure pump for fuel injection device has pump housing with body and cap to cover each pump element
PCT/DE2003/002061 WO2004033905A1 (en) 2002-10-09 2003-06-20 High pressure pump, especially for a fuel injection device in an internal combustion engine

Publications (2)

Publication Number Publication Date
EP1552145A1 true EP1552145A1 (en) 2005-07-13
EP1552145B1 EP1552145B1 (en) 2010-06-02

Family

ID=32038410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030807731 Active EP1552145B1 (en) 2002-10-09 2003-06-20 High pressure pump, especially for a fuel injection device in an internal combustion engine

Country Status (6)

Country Link
US (1) US7178509B2 (en)
EP (1) EP1552145B1 (en)
JP (1) JP4384043B2 (en)
CN (1) CN100406722C (en)
DE (2) DE10247142A1 (en)
WO (1) WO2004033905A1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10221305A1 (en) * 2002-05-14 2003-11-27 Bosch Gmbh Robert Radial piston pump for fuel injection system with improved high pressure resistance
JP4650629B2 (en) * 2004-11-16 2011-03-16 株式会社アドヴィックス Radial plunger pump
DE102006006555B4 (en) * 2006-02-13 2008-03-06 Siemens Ag high pressure pump
DE102008000711A1 (en) 2008-03-17 2009-09-24 Robert Bosch Gmbh high pressure pump
DE102008000705A1 (en) 2008-03-17 2009-09-24 Robert Bosch Gmbh high pressure pump
DE102008000729A1 (en) 2008-03-18 2009-09-24 Robert Bosch Gmbh High-pressure pump i.e. radial or series piston pump, for fuel injection system of air-compressing self-ignition internal-combustion engine, has cam provided with circular cross section, where center of section is spaced from axis of shaft
DE102008001587A1 (en) * 2008-05-06 2009-11-12 Robert Bosch Gmbh High pressure fuel pump for operating an internal combustion engine
DE102008001793A1 (en) 2008-05-15 2009-11-19 Robert Bosch Gmbh High pressure pump, particularly fuel injection device for internal combustion engine, has pump housing, where drive shaft rotating around axis is carried
DE102008001856A1 (en) 2008-05-19 2009-11-26 Robert Bosch Gmbh Plug-in pump for supplying of fuel to combustion engine, has cylinder head with hollow cylinder, in which piston is accommodated
EP2143935B1 (en) * 2008-07-08 2011-01-19 Continental Automotive GmbH Pump unit for fluid delivery
DE102008041751A1 (en) 2008-09-02 2010-03-04 Robert Bosch Gmbh High-pressure radial piston pump
DE102008042075A1 (en) 2008-09-15 2010-03-18 Robert Bosch Gmbh Device for supplying fuel to an internal combustion engine
DE102008043841A1 (en) 2008-11-19 2010-05-20 Robert Bosch Gmbh Ball valve for high pressure pumps
DE102009000965A1 (en) * 2009-02-18 2010-08-19 Robert Bosch Gmbh High pressure fuel pump with integrated high pressure accumulator
DE102009001459A1 (en) 2009-03-11 2010-09-16 Robert Bosch Gmbh Injection pump for internal combustion engine, particularly for internal combustion engine operated with diesel oil, comprises eccentric shaft with eccentric tappet, rotating ring mounted on eccentric tappet and piston supported on ring
DE102009029623A1 (en) 2009-09-21 2011-03-24 Robert Bosch Gmbh High pressure pump, particularly radial piston pump for fuel injection systems of air-compressing, self-igniting internal combustion engines, has housing part, cylinder head connected with housing part and pump assembly assigned to cylinder
DE102013210036A1 (en) * 2013-05-29 2014-12-04 Robert Bosch Gmbh High pressure pump for a fuel injection system
CN105378279A (en) * 2013-06-13 2016-03-02 麦格纳动力系巴德霍姆堡有限责任公司 Radial piston compressor
CN103470385B (en) * 2013-09-18 2015-09-23 南京航空航天大学 Low-speed marine diesel engine high-pressure common rail fuel injection control systems

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3119340A (en) * 1961-09-22 1964-01-28 Thompson Ramo Wooldridge Inc Variable pump for fuel injection supply
JPH08135462A (en) * 1994-11-09 1996-05-28 Yamaha Motor Co Ltd Vertical engine
FI101999B (en) * 1997-02-20 1998-09-30 Waertsilae Nsd Oy Ab Arrangement for internal combustion engine injection pump
DE19716242A1 (en) * 1997-04-18 1998-10-22 Bosch Gmbh Robert High pressure fuel pump
DE19726572A1 (en) * 1997-06-23 1998-12-24 Mannesmann Rexroth Ag Radial piston pump with eccentric shaft driving number of feed units
TW384358B (en) * 1997-09-25 2000-03-11 Mitsubishi Electric Corp High pressure fuel supply pump body for an in-cylinder fuel injection engine
DE19802476A1 (en) * 1998-01-23 1999-07-29 Bosch Gmbh Robert Pump fitting to supply fuel at high pressure for common rail fuel injection system of internal combustion engine
DE10046315C2 (en) 2000-09-19 2002-11-14 Siemens Ag High pressure pump for a storage injection system and storage injection system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004033905A1 *

Also Published As

Publication number Publication date
EP1552145B1 (en) 2010-06-02
WO2004033905A1 (en) 2004-04-22
CN1688810A (en) 2005-10-26
JP4384043B2 (en) 2009-12-16
CN100406722C (en) 2008-07-30
DE50312780D1 (en) 2010-07-15
US7178509B2 (en) 2007-02-20
DE10247142A1 (en) 2004-04-22
JP2006502338A (en) 2006-01-19
US20060008363A1 (en) 2006-01-12

Similar Documents

Publication Publication Date Title
EP1707799B1 (en) Fuel pump having plunger and fuel supply system using the same
DE4401074B4 (en) Pump arrangement, in particular for conveying fuel from a reservoir to an internal combustion engine
DE19522306B4 (en) High-pressure fuel supply pump
JP4243630B2 (en) High pressure pump especially for fuel injection devices of internal combustion engines
DE69919309T2 (en) Fuel injection pump
EP2652326B1 (en) High-pressure pump
EP1521914B1 (en) Radial piston pump
CN102422011B (en) High-pressure pump
US6991438B2 (en) Radial piston pump with piston rod elements in rolling contact with the pump pistons
JP4768826B2 (en) High pressure pump especially for fuel injection devices of internal combustion engines
DE102010030498A1 (en) Pump, in particular high-pressure fuel pump
US7284537B2 (en) High-pressure pump for a fuel-injection device of an internal combustion engine
KR101226051B1 (en) Improvements relating to fuel pumps
US6077056A (en) Reciprocating pump
JP3852756B2 (en) Fuel injection pump
US7775193B2 (en) High-pressure pump, in particular for a fuel injection system of an internal combustion engine
EP1697631B1 (en) Valve, in particular for a high-pressure pump of a fuel-injection device for an internal combustion engine
EP1101931B1 (en) High pressure common rail injection system
US10041457B2 (en) Pump unit
US6722857B1 (en) Pump assembly for fuel
US20040091377A1 (en) High-pressure fuel pump
EP1636488B1 (en) Check valve, especially for a high pressure pump of a fuel injection device for an internal combustion engine
US20040045537A1 (en) High-pressure fuel pump for a fuel system of direct injection internal combustion engine, fuel system and internal combustion engine
US20010022171A1 (en) Pump for supplying a fuel injection system and for supplying a hydraulic valve controller for internal combustion engines
US6901915B2 (en) Fuel injection device for an internal combustion engine

Legal Events

Date Code Title Description
AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

17P Request for examination filed

Effective date: 20050509

RBV Designated contracting states (corrected)

Designated state(s): DE FR IT

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR IT

REF Corresponds to:

Ref document number: 50312780

Country of ref document: DE

Date of ref document: 20100715

Kind code of ref document: P

26N No opposition filed

Effective date: 20110303

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 50312780

Country of ref document: DE

Effective date: 20110302

PGFP Annual fee paid to national office [announced from national office to epo]

Ref country code: DE

Payment date: 20120822

Year of fee payment: 10

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20120620

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20131025

PGFP Annual fee paid to national office [announced from national office to epo]

Ref country code: IT

Payment date: 20130621

Year of fee payment: 11

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50312780

Country of ref document: DE

Effective date: 20140101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140620

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 14

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

PGFP Annual fee paid to national office [announced from national office to epo]

Ref country code: FR

Payment date: 20190625

Year of fee payment: 17