EP2007979A1 - Pompe à piston radial pour l'alimentation haute pression en carburant d'un moteur à combustion interne - Google Patents

Pompe à piston radial pour l'alimentation haute pression en carburant d'un moteur à combustion interne

Info

Publication number
EP2007979A1
EP2007979A1 EP07727923A EP07727923A EP2007979A1 EP 2007979 A1 EP2007979 A1 EP 2007979A1 EP 07727923 A EP07727923 A EP 07727923A EP 07727923 A EP07727923 A EP 07727923A EP 2007979 A1 EP2007979 A1 EP 2007979A1
Authority
EP
European Patent Office
Prior art keywords
valve
piston pump
radial piston
threaded pin
suction valve
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
EP07727923A
Other languages
German (de)
English (en)
Other versions
EP2007979B1 (fr
Inventor
Ngoc-Tam Vu
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.)
Continental Automotive GmbH
Original Assignee
Siemens AG
Continental Automotive 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 Siemens AG, Continental Automotive GmbH filed Critical Siemens AG
Publication of EP2007979A1 publication Critical patent/EP2007979A1/fr
Application granted granted Critical
Publication of EP2007979B1 publication Critical patent/EP2007979B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/04—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 special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps
    • F02M59/06—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 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
    • 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
    • F02M59/46—Valves
    • F02M59/464—Inlet valves of the check valve type
    • 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
    • F04B1/0452—Distribution members, e.g. valves
    • 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
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/102—Disc valves
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/50—Arrangements of springs for valves used in fuel injectors or fuel injection pumps

Definitions

  • the invention relates to a radial piston pump for high-pressure fuel supply in an internal combustion engine, having a compressor chamber arranged in a displacer housing, with reciprocating pistons arranged in a cylinder chamber, with a suction valve connected to a fuel supply line with a closing body loaded with a spring, an intermediate piece and a threaded pin and with a connected to a fuel discharge line pressure valve.
  • a radial piston pump unit in which the suction valve is arranged in the transverse direction to the vertical axis of the reciprocating piston (DE 102 28 552 B4).
  • This suction valve has the function of opening in as streamlined a manner as possible within a very short time and then reliably closing it again.
  • the suction valve should be sealed and formsta ⁇ bil with an optimal dead space volume.
  • the object of the present invention is to make the suction valve in a radial piston pump of the type mentioned so that it is streamlined, wear-resistant and dimensionally stable with optimization of Tot ⁇ volume space.
  • valve mushroom formed in Flachsitzaus ⁇ tion with recesses well in the displacer unit is centered.
  • the valve lift is ver ⁇ simplified by the distance between the valve head and the displacer unit, so that no stroke adjustment more erfor ⁇ sary is.
  • the valve can be made for example of ceramic or sintered ⁇ material.
  • the valve mushroom can have three channels distributed over the circumference, which pass through the base plate.
  • the stopper plate may at the side remote from the waistband side at least two radi al ⁇ extending, having the through hole associated channels which are fuel-supply line in the region of.
  • the suction valve may be arranged analogously to the known prior art in the transverse direction to the vertical axis of the piston and in the displacer housing.
  • valve mushroom can displaceably store in a cylinder space of the displacer housing and with its spring-facing front side and the front of the cylinder chamber of the stroke of the suction valve defi ⁇ kidney.
  • the threaded pin with a collar on the front side adjacent to the zone of the stop plate ⁇ in which the base plate and the two channels are arranged.
  • the threaded pin may have, following the region of the threads, a circumferential groove into which a ring seal is inserted. This results in greater safety in the pump duration drove, since a high biasing force is achieved by the threaded pin with good sealing.
  • the stop plate may be between a collar in the displacement housing and the threaded pin Ge ⁇ be arranged, to which the cylinder chamber of smaller diameter of the valve head is connected.
  • Fig. 1 shows a cross section through a unit of Ra ⁇ dialkolbenpumpe
  • Fig. 2 is an explosive view of the individual parts of the suction valve.
  • a radial piston pump 1 is shown for high-pressure fuel supply in an internal combustion engine. It is particularly applicable to a common rail injection system.
  • the radial piston pump 1 has a in a Verdrängergephase- se 3 arranged compressor chamber 4 on, as well as one way of which is arranged in a cylinder chamber 6 and reciprocable piston 7.
  • This piston 7 can, for example, by a non-illustrated eccentric, known per se drive ⁇ wave corresponding to be moved.
  • the radial piston pump 1 a suction valve 10, which is connected to a fuel supply line 9.
  • This suction valve 10 can be arranged in the displacer housing 3 in the transverse direction to the vertical axis 0-0 of the piston 7.
  • a pressure valve 16 which is connected to a fuel outlet line 17, is arranged above the piston 7. Via the suction valve 10, fuel is supplied from the low-pressure region to the pump piston 7. After the pressure has built up, the compressed fuel is discharged via the pressure valve 16. This fuel flows into a high-pressure channel and via a high-pressure line to a fuel distributor, for example a common-rail system.
  • the suction valve 10 has a closing body 12, which is acted upon by a spring 11, in addition, a stop plate 22 and a threaded pin 14 is provided.
  • the closing body 12 is formed of the suction valve 10 as the valve head 18, which according to FIG. 2 shows a waste-circuit bunch, 20 ⁇ 20 xx having 19 and subsequently three circumferentially distributed channels 20. These channels through ⁇ set a base plate 34, which may be formed as a bearing for the spring 11.
  • This stop plate 22 has on the side facing away from the end collar 19 at least two radially extending, connected to a through hole 36 channels 24 and 24 x , which are in the region of the fuel supply line 9.
  • the stop plate 22 is bounded on the back by the threaded pin 14, which has a region 28 for the threads according to FIG.
  • valve head 18 supports displaceable bar in a cylinder chamber 38 of the displacer 3 and de ⁇ finiert with its spring 11 of the facing end face and the front of the foregoing cylinder chamber the stroke H of the suction valve 10th
  • the threaded pin 14 following the region 28 of the threads, has a circumferential groove 30 into which a ring seal 32 is inserted.
  • the suction valve 10 opens and the fuel can flow via the supply line 9, the base plate 36 and the channels 20, 20 ', 20' 'of the closing body 12 in the compressor chamber 4.
  • the entire unit of the suction valve 10 is designed easy to install due to the special ⁇ re design, with no adjustment of the stroke and the compression spring 11 is required.
  • the dead space volume is optimized, which pen Signsgrad leads to a better pump, and also the suction valve 10 total into ⁇ with low structural complexity streamlined ges ⁇ is taltet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne une pompe à piston radiale (1) destinée à l'alimentation haute pression en carburant d'un moteur à combustion interne, comprenant un compartiment de compression (4) disposé dans un carter de déplaceur (3), un piston (7) animé d'un mouvement de va-et-vient et logé dans une chambre de cylindre (6), une soupape d'aspiration (10) raccordée à la conduite d'alimentation en carburant (9) et dotée d'un obturateur (12) sollicité par un ressort, une pièce intermédiaire, une tige filetée (14) et un clapet de refoulement (16) raccordé à une conduite de sortie de carburant (17). Selon l'invention, l'obturateur (12) de la soupape d'aspiration (10) est réalisé sous la forme d'une soupape en champignon (18) dont la face frontale est sollicitée par le ressort (11) et qui est dotée d'un épaulement terminal (9), d'au moins deux canaux (20,20',20'') reliés à ce dernier et répartis sur la circonférence, et d'une plaque de base (34). Une plaque de butée (22), en tant que pièce intermédiaire, est adjacente à l'épaulement terminal (19) de la soupape en champignon (18) et dotée d'une autre plaque de base (36) située dans le prolongement de la tige filetée (14).
EP07727923A 2006-04-11 2007-04-10 Pompe à piston radial pour l'alimentation haute pression en carburant d'un moteur à combustion interne Active EP2007979B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006017037.7A DE102006017037B4 (de) 2006-04-11 2006-04-11 Radialkolbenpumpe zur Kraftstoffhochdruckversorgung bei einer Brennkraftmaschine
PCT/EP2007/053455 WO2007116053A1 (fr) 2006-04-11 2007-04-10 Pompe à piston radial pour l'alimentation haute pression en carburant d'un moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP2007979A1 true EP2007979A1 (fr) 2008-12-31
EP2007979B1 EP2007979B1 (fr) 2010-02-24

Family

ID=38249225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07727923A Active EP2007979B1 (fr) 2006-04-11 2007-04-10 Pompe à piston radial pour l'alimentation haute pression en carburant d'un moteur à combustion interne

Country Status (5)

Country Link
US (1) US7775190B2 (fr)
EP (1) EP2007979B1 (fr)
JP (1) JP4971425B2 (fr)
DE (2) DE102006017037B4 (fr)
WO (1) WO2007116053A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009004478B4 (de) 2009-01-13 2014-08-14 Continental Automotive Gmbh Sitzventil sowie Verfahren zu dessen Herstellung
EP2278163A1 (fr) * 2009-07-20 2011-01-26 Delphi Technologies Holding S.à.r.l. Ensemble de pompe
DE102010001880A1 (de) * 2010-02-12 2011-08-18 Robert Bosch GmbH, 70469 Zylinderkopf für eine Kraftstoffhochdruckpumpe
ITMI20130023A1 (it) * 2013-01-09 2014-07-10 Bosch Gmbh Robert Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna
ES2402636B1 (es) * 2013-03-08 2014-01-23 Zertan S.A. Válvula de contrapresión para inyectores de combustible
JP7139974B2 (ja) * 2019-01-25 2022-09-21 株式会社デンソー 燃料噴射ポンプ

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0320181A (ja) * 1989-03-23 1991-01-29 Nippon Piston Ring Co Ltd 逆止弁
JPH0343179U (fr) * 1989-09-05 1991-04-23
DE4027794C2 (de) * 1990-09-01 2002-06-20 Continental Teves Ag & Co Ohg Hydraulische Radialkolbenpumpe
DE4027848A1 (de) * 1990-09-03 1992-03-05 Teves Gmbh Alfred Kolbenpumpe
DE4136624A1 (de) * 1991-11-07 1993-05-27 Daimler Benz Ag Ventilgesteuertes verdraengeraggregat mit ventilausloesung
DE19653895A1 (de) * 1996-12-21 1998-06-25 Teves Gmbh Alfred Pumpe, insbesondere für eine hydraulische Bremsschlupfregelanlage
DE19729791A1 (de) * 1997-07-11 1999-01-14 Bosch Gmbh Robert Radialkolbenpumpe zur Kraftstoffhochdruckversorgung
DE19732791A1 (de) * 1997-07-30 1999-02-04 Bosch Gmbh Robert Kolbenpumpe
DE19841642C2 (de) * 1998-09-11 2002-07-18 Bosch Gmbh Robert Radialkolbenpumpe
JP2000097380A (ja) * 1998-09-24 2000-04-04 Sanoh Industrial Co Ltd 流体管用コネクタ−
DE19848035A1 (de) 1998-10-17 2000-04-20 Bosch Gmbh Robert Radialkolbenpumpe für Kraftstoffhochdruckerzeugung
DE10117600C1 (de) * 2001-04-07 2002-08-22 Bosch Gmbh Robert Hochdruck-Kraftstoffpumpe für ein Kraftstoffsystem einer direkteinspritzenden Brennkraftmaschine, Kraftstoffsystem sowie Brennkraftmaschine
ITTO20011039A1 (it) * 2001-10-30 2003-04-30 Ct Studi Componenti Per Veicol Valvola di aspirazione per una pompa ad alta pressione, in particolare per combustibile di un motore endotermico.
DE10228552B9 (de) 2002-06-26 2007-08-23 Siemens Ag Radialkolbenpumpeneinheit
KR20060127128A (ko) 2004-02-11 2006-12-11 로베르트 보쉬 게엠베하 특히 엔진의 연료 분사 장치용 고압 펌프
DE102004028073B3 (de) * 2004-06-09 2005-08-04 Siemens Ag Rückschlagventil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007116053A1 *

Also Published As

Publication number Publication date
WO2007116053A1 (fr) 2007-10-18
DE102006017037A1 (de) 2007-10-18
DE102006017037B4 (de) 2015-09-17
US20090126695A1 (en) 2009-05-21
US7775190B2 (en) 2010-08-17
JP2009533594A (ja) 2009-09-17
DE502007002933D1 (de) 2010-04-08
EP2007979B1 (fr) 2010-02-24
JP4971425B2 (ja) 2012-07-11

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