EP1317620A1 - Raccord d'huile de fuite a configuration individuelle - Google Patents

Raccord d'huile de fuite a configuration individuelle

Info

Publication number
EP1317620A1
EP1317620A1 EP01964939A EP01964939A EP1317620A1 EP 1317620 A1 EP1317620 A1 EP 1317620A1 EP 01964939 A EP01964939 A EP 01964939A EP 01964939 A EP01964939 A EP 01964939A EP 1317620 A1 EP1317620 A1 EP 1317620A1
Authority
EP
European Patent Office
Prior art keywords
connection
leakage oil
channel
oil connection
leakage
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Withdrawn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
EP01964939A
Other languages
German (de)
English (en)
Inventor
Dieter Kienzler
Udo Schaich
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
Publication of EP1317620A1 publication Critical patent/EP1317620A1/fr
Withdrawn legal-status Critical Current

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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/002—Arrangement of leakage or drain conduits in or from injectors

Definitions

  • the present invention relates to an individually adaptable leak oil connection for a component having a leak oil line.
  • the present invention relates to a leakage oil connection for a holder of an injector in a common rail system.
  • FIGS. 10 and 11 A known leakage oil connection is shown in FIGS. 10 and 11.
  • the leakage oil connection is designed such that a leakage oil line 2 is connected directly to the connection end piece 4 via a connection channel 3 , As shown in FIG. 11, further holes, namely a high-pressure hole 19 and a hole 20 for an electrical connection of the piezo actuator, are provided in the holder 18.
  • the leakage oil connection in the prior art can only be adapted in a limited manner to the most varied engine compartment geometries of different vehicles or manufacturers. For this reason, there are, for example, a large number of different holders for piezo-controlled injection systems in order to be able to meet the respective customer request. This leads to increased costs, since a large number of different parts have to be kept in stock or different manufacturing processes have to be carried out.
  • the leakage oil connection according to the invention with the features of claim 1 has the advantage that it can be arranged completely flexibly on the component in which a leakage oil line is provided.
  • the provision of an at least partially annular channel on the outer circumference of the component having the leak oil line can ensure that the leak oil can be arranged at any angle on the circumference of the component.
  • the channel which is at least partially ring-shaped, is connected to the leakage oil line via a connecting channel.
  • the connecting channel between the drain line and the annular channel can be arranged at any point in the component.
  • a connecting end piece of the leakage oil connection is then arranged on the annular channel via a connecting element.
  • a flexible leak oil connection is provided, which can be adapted to the most varied of geometries.
  • the leakage oil connection can be arranged in any position, even with narrow engine compartment geometries and tight installation conditions.
  • the flexible leak oil connection according to the invention is used in an injector unit in a common rail system for the leak oil from a hydraulic translator for the hydraulic translation of a stroke of a piezoelectric element.
  • connection element which connects the annular channel to the connection end piece, is designed as a flexible hose. It is therefore possible that the connection element, which connects the annular channel to the connection end piece, is designed as a flexible hose. It is therefore possible that the connection element, which connects the annular channel to the connection end piece, is designed as a flexible hose. It is therefore possible that the connection element, which connects the annular channel to the connection end piece, is designed as a flexible hose. It is therefore possible that the
  • Hose can be rotated in any direction and at any angle, so that the connection end piece of the drain port is arranged in a desired position is.
  • the flexible hose is particularly preferably made of plastic.
  • the annular channel is designed as a completely circumferential annular groove which runs on the outer circumference of the component. ' This means that the connection element can be arranged at any desired location on the completely circumferential ring groove.
  • the annular groove can have any cross section.
  • the annular groove is connected to the drain line through the connection channel. The component can thus be standardized with regard to the manufacturing steps required for the leak oil connection.
  • a support ring is preferably provided on the connection element.
  • the support ring is arranged on the outer circumference of the connection element and is designed, for example, as a perforated disk, which with
  • an insert element is preferably provided which is arranged around the annular channel.
  • a shoulder or an annular groove is preferably provided for holding the insert element.
  • the insert element can provide a sufficient sealing function on the annular channel
  • its sealing edge profile is designed as a circular segment profile, a sawtooth profile, 2/20977
  • the insert element is formed in two parts.
  • One part is preferably designed as a fabric insert and another part is designed as a plastic insert.
  • the plastic insert offers protection against external influences for the fabric insert.
  • connection element In order to allow a final fixation of the connection element and the connection end piece attached to it, a plastic extrusion coating is provided in the area of the leak oil connection. As a result, the leakage oil connection is held in its desired end position and there is also protection against external influences.
  • connection element and the connection end piece are preferably formed in one piece.
  • This one-piece component is preferably made of plastic.
  • the annular channel can also be designed in such a way that it consists of a plurality of annular sections which are formed at different heights on the outer circumference and are connected to one another via vertical connecting channels.
  • FIG. 1 shows a sectional view of a component with a leakage oil connection according to the invention in accordance with a first exemplary embodiment
  • FIG. 2 shows a perspective view of an insert element and a connecting element according to the first exemplary embodiment
  • Figure 3 is a schematic partial cross-sectional view of a
  • Figure 4 is a schematic partial cross-sectional view of a
  • FIGS. 5 to 8 different sealing edge profiles of insert elements for the leak oil connection according to the invention
  • FIG. 9 shows a schematic perspective illustration of the use of the leakage oil connection according to the invention in a holder for a common rail system
  • Figure 10 is a sectional side view of a holder for a piezo injector according to the prior art.
  • FIG. 11 shows a sectional view of the holder along the line AA in FIG. 10. Description of the embodiments
  • FIG. 1 and 2 show a first leakage oil connection 1 according to the invention for forming a leakage oil outlet on a component.
  • the leakage oil connection 1 includes a connecting channel 3, via which a leakage oil line 2 is connected to an annular channel 5.
  • the connecting channel 3 is designed as a transverse bore at an angle of 90 ° to the drain line 2.
  • the annular channel 5 according to the first embodiment is completely formed on the circumference of a holder 18.
  • the holder 18 serves as a receiving element in a piezo-controlled injector for a common rail system and accommodates a piezo actuator and a hydraulic translator.
  • the leak oil line 2 serves to receive leak oil from the hydraulic translator.
  • connection element 6 is designed as a flexible hose and can be arranged at any point on the completely circumferential ring channel 5.
  • a support ring 7 is further provided on the flexible connection element 6, which is designed as a perforated disc and through which the connection element 6 is inserted through the central opening. The support ring 7 is used in particular for fixing in an injection molding tool, in which after the assembly of the
  • Leakage oil connection 1 is a plastic extrusion 10.
  • the support ring 7 also serves as a stop for the nipple-shaped connecting end piece 4 and thus has a supporting function for the connecting end piece 4.
  • the supporting ring is further distributed 7 the joining forces in the plastic.
  • a press fit is preferably provided between the support ring 7 and the tubular connecting element 6. The leakage oil connection can thus be arranged at any angle ⁇ .
  • insert elements 8 and 9 are further provided which have a sealing function.
  • the insert element 8 is formed from plastic and seals the ring channel 5 both against leakage of leakage oil and in particular against the penetration of plastic when the plastic housing 10 is encapsulated.
  • a flexible, elastic plastic is preferably used for the insert element 8.
  • the insert element 9 is a fabric insert and serves for stiffening in the back area of the insert element 8 during the encapsulation of the plastic housing 10. In particular, the insert element 9 prevents the plastic inserts 8 from falling. As shown in FIGS. 1 and 2, the fabric insert 9 is inserted into a recess 14 on the outer circumference of the plastic insert 8. The plastic insert 8 in turn has two annular projections on the side facing the holder 18, which are arranged in two grooves 12 and 13 formed in the holder 18 in order to hold the plastic insert 8.
  • a through opening 11 is also formed in the two insert elements 8 and 9 and serves to receive the connecting element 6.
  • a press fit is preferably provided between the tubular connecting element 6 and the through opening 11 in the insert elements 8 and 9.
  • the tubular connecting element it is also possible for the tubular connecting element to be glued into the opening 11.
  • the leakage oil connection can be arranged in any direction, since the connection element 6 is designed to be flexible. Since the annular channel 5 is formed all the way round on the holder 18, the connection 11 for the hose 6 can also be positioned anywhere on the holder 8. It is therefore possible to take into account the most diverse engine compartment geometries from different manufacturers and to arrange the leakage oil connection at the desired location, whereby the same individual parts can be used for all different variants.
  • FIG. 3 shows a leakage oil connection in accordance with a second exemplary embodiment of the present invention.
  • a shoulder 21 is provided on the holder 18, against which a projection of a plastic insert 8 rests (cf. FIG. 3). Furthermore, a groove 12 is formed in the holder 18, which is designed to receive a projection with a sealing end face 15.
  • the second insert element 9 is L-shaped in section and is arranged on the outer circumference of the insert 8. The second insert 9 can be made of fabric or for example
  • annular groove 12 on the holder 18 can be omitted if the contact pressure of the plastic insert 8 is high enough.
  • a contact pressure can be applied by providing a prestressed steel insert in the plastic insert 8. This ensures that no plastic can get into the ring channel 5 during the encapsulation of the housing 10.
  • FIG. 4 shows a leakage oil connection according to a third exemplary embodiment of the present invention. Identical or functionally identical parts are identified by the same reference numerals as in the exemplary embodiment described above. Since the third exemplary embodiment essentially corresponds to the second exemplary embodiment, only differences in detail are explained below.
  • the holder 18 of the third exemplary embodiment has a second shoulder 22 in addition to a first shoulder 21.
  • an annular channel 5 is arranged between the two paragraphs 21 and 22.
  • a plastic insert 8 and a fabric or steel insert 9 are again provided to seal or protect the ring channel 5 'during the extrusion coating.
  • Both inserts 8 and 9 are essentially L-shaped in section.
  • paragraphs 21 and 22 serve as sealing edges and as a stop for the inserts. This ensures a high level of tightness.
  • the third exemplary embodiment corresponds to the previously described exemplary embodiments, so that a further illustration is not given below.
  • FIGS. 5 to 8 show different examples of insert elements 8 with different sealing end faces 15. As shown in FIG.
  • the sealing end face 15 can be designed, for example, as a circular segment profile.
  • a sawtooth profile is shown in FIG. 6, the number of individual saw teeth being arbitrary.
  • 7 shows a sealing edge profile 15 in the form of a pyramid.
  • FIG. 8 shows, as a sealing edge profile 15, an insert 8 with a hollow profile, which can be single (upper part of the profile) or double (lower part of the profile). It should be noted that the sealing edge profiles shown in FIGS. 5 to 8 can also be used in combination.
  • a high-pressure bore 19 is provided, which is connected to a high-pressure connection 17.
  • the holder 18 further includes a bore 23 for receiving a piezo element and a hydraulic translator.
  • the bore 23 is connected to an electrical connection 16 via a bore 20 for the electrical connection of the piezo actuator.
  • a leak oil line 2 is provided, which is connected to a ring channel (not shown) via a connecting channel 3.
  • a tubular connecting element 6 and a connecting end piece 4 are arranged on the ring channel, as previously described, and are encapsulated with a plastic after fixing for fixing.
  • connection element 6 and the connection end piece 4 can also be provided as a one-piece element.
  • connection channel 3 can be provided for connecting the leakage oil line 2 to the ring-shaped channel 5 in any manner, regardless of the connection of the connection element 6.
  • annular channel 5 in a completely annular manner on the circumference, but rather only a specific section of the component with the annular channel 5, e.g. Des- of the scope above provided. This would be sufficient, in particular, if the leakage oil connection had to be arranged, for example, on only one specific side of the component at different motor manufacturers. Then the ring channel 5 would only have to be arranged in this area of the component.
  • a leakage oil connection 1 which, in comparison with the prior art, can be positioned practically at an angle of 360 ° at any position on a component which is to be provided with a leakage oil outlet, with very little effort. Even greater flexibility can be achieved if a connection element of the leakage oil connection is made flexibly, for example from a rubber hose, a plastic hose or a hose consisting of several links.
  • the present invention thus relates to a leakage oil connection, in particular for a common rail system or a common rail injector, for connecting a leakage oil line 2 via a connecting duct 3 to a connection end piece 4.
  • the leakage oil connection 1 has an outer circumference of a component in FIG which the leak oil connection is provided, an at least partially ring-shaped channel in which the connecting channel 3 opens for connection to the leak oil line 2.
  • the annular channel 5 is connected to the connection end piece 4 via a connection element 6.

Landscapes

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

Abstract

La présente invention concerne un raccord d'huile de fuite, en particulier dans un système Common Rail ou un injecteur Common Rail, permettant de relier une conduite de retour d'huile de fuite (2) à un embout de raccordement (4) à travers un canal de liaison (3). Sur une périphérie extérieure d'un composant dans lequel le raccord d'huile de fuite (1) est agencé, ledit raccord présente un canal de forme annulaire au moins par sections, dans lequel se jette le canal de liaison (3) reliant la conduite de retour d'huile de fuite (2). Ce canal annulaire (5) est relié à l'embout de raccordement (4) par un élément de raccordement (6).
EP01964939A 2000-09-05 2001-08-28 Raccord d'huile de fuite a configuration individuelle Withdrawn EP1317620A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10043627A DE10043627A1 (de) 2000-09-05 2000-09-05 Individuell gestaltbarer Leckölanschluss
DE10043627 2000-09-05
PCT/DE2001/003275 WO2002020977A1 (fr) 2000-09-05 2001-08-28 Raccord d'huile de fuite a configuration individuelle

Publications (1)

Publication Number Publication Date
EP1317620A1 true EP1317620A1 (fr) 2003-06-11

Family

ID=7654992

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01964939A Withdrawn EP1317620A1 (fr) 2000-09-05 2001-08-28 Raccord d'huile de fuite a configuration individuelle

Country Status (6)

Country Link
US (1) US6705299B2 (fr)
EP (1) EP1317620A1 (fr)
JP (1) JP2004508495A (fr)
CZ (1) CZ20021503A3 (fr)
DE (1) DE10043627A1 (fr)
WO (1) WO2002020977A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10215980B4 (de) * 2002-04-11 2008-03-27 Siemens Ag Leckageanschluss für einen Kraftstoffinjektor
US7004151B2 (en) * 2004-06-29 2006-02-28 Millennium Industries Corp. Vented injector cup

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434667A (en) 1967-06-05 1969-03-25 Bosch Arma Corp Fuel injection nozzle
FR2068857A5 (fr) * 1969-10-24 1971-09-03 Sofredi
JPS5752376Y2 (fr) 1979-02-26 1982-11-13
GB8329798D0 (en) 1983-11-08 1983-12-14 Lucas Ind Plc Fuel injection nozzles
US4709679A (en) * 1985-03-25 1987-12-01 Stanadyne, Inc. Modular accumulator injector
US4826081A (en) * 1987-08-20 1989-05-02 Zwick Eugene B Unit type fuel injector for low lubricity, low viscosity fuels
US5485823A (en) * 1990-12-11 1996-01-23 Lucas Industries Public Limited Company Fuel pump having a leaked fuel conveying structure
JP3740733B2 (ja) * 1996-02-13 2006-02-01 いすゞ自動車株式会社 内燃機関の燃料噴射装置
IT1292771B1 (it) * 1997-06-16 1999-02-11 Elasis Sistema Ricerca Fiat Dispositivo di collegamento rapido di un connettore di riflusso con un iniettore di combustibile per motori a combustione interna
JP3851056B2 (ja) * 2000-04-18 2006-11-29 トヨタ自動車株式会社 高圧ポンプ
US6598579B2 (en) * 2001-01-08 2003-07-29 Diesel Technology Company Fuel injection pump for an internal combustion engine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO0220977A1 *

Also Published As

Publication number Publication date
WO2002020977A1 (fr) 2002-03-14
DE10043627A1 (de) 2002-03-21
CZ20021503A3 (cs) 2003-10-15
JP2004508495A (ja) 2004-03-18
US6705299B2 (en) 2004-03-16
US20030019463A1 (en) 2003-01-30

Similar Documents

Publication Publication Date Title
EP0918928B1 (fr) Systeme d'injection de carburant
WO2018050881A1 (fr) Clapet antiretour, élément de conduite haute pression et pompe à carburant à haute pression
DE202006007821U1 (de) Spann- oder Führungsschiene mit Verliersicherung für Haltebolzen
DE102013009650A1 (de) Ventil
DE102007041949B3 (de) Befestiger
WO2021190897A1 (fr) Raccord de type enfichable ayant un verrouillage de préassemblage
DE102011002996A1 (de) Kraftstoffeinspritzventil mit verbessertem Hochdruckanschluss
DE19933254A1 (de) Anschlussstutzen und Gehäuse, insbesondere Kraftstoffhochdruckspeicher, mit vorgespannt angeschweißtem Anschlussstutzen für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen
WO2003087567A1 (fr) Raccordement de fuite conçu pour un injecteur de carburant
WO2000040857A1 (fr) Raccord pour le retour de carburant de fuite et injecteur de carburant presentant un tel raccord
WO2010051870A1 (fr) Moteur submersible
WO2008074500A1 (fr) Joint plat
EP1276996B1 (fr) Unite de montage constituee d'un composant et d'au moins une vis taraudeuse
EP1317620A1 (fr) Raccord d'huile de fuite a configuration individuelle
DE2449443A1 (de) Rueckschlagventil
DE102020125275A1 (de) Kabeldurchführungsanordnung und Fahrzeug mit einer Antriebsstrangkomponente mit einer Kabeldurchführungsanordnung
EP1676031A1 (fr) Pompe a pistons radiaux pour systemes d'injection a rampe commune
DE202005020263U1 (de) Mehrfachkupplung für Medienleitungen
DE10257818A1 (de) Stutzen für eine Behälterwand
DE102007041950B4 (de) Ventilanordnung, für eine hydrostatische Kolbenmaschine
EP1153216B1 (fr) Tubulure de raccordement et boitier pour un systeme d'injection de carburant
WO2018197113A1 (fr) Pompe à carburant
DE202010013887U1 (de) Gehäuseeinheit für mechanische, elektromechanische und elektrotechnische Komponenten
EP2023027A2 (fr) Jonction tubulaire
DE102021203668A1 (de) Hochdruckpumpe für ein Kraftstoffeinspritzsystem

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20030407

AK Designated contracting states

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

17Q First examination report despatched

Effective date: 20061120

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20070331