WO2002038950A1 - Brennstoffeinspritzanlage - Google Patents
Brennstoffeinspritzanlage Download PDFInfo
- Publication number
- WO2002038950A1 WO2002038950A1 PCT/DE2001/004207 DE0104207W WO0238950A1 WO 2002038950 A1 WO2002038950 A1 WO 2002038950A1 DE 0104207 W DE0104207 W DE 0104207W WO 0238950 A1 WO0238950 A1 WO 0238950A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel injection
- inlet section
- seal carrier
- fuel
- injection system
- Prior art date
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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
-
- 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
- F02M55/004—Joints; Sealings
Definitions
- the invention relates to a fuel injection system for injecting fuel into an internal combustion engine, in particular for injecting fuel directly into the combustion chamber or the combustion chambers of the internal combustion engine.
- the invention relates to a fuel injection system according to the preamble of the main claim •.
- a fuel injection system is known from DE 197 25 076 AI.
- annular seal carrier For the sealing connection between a fuel injection valve and an associated connecting piece of a fuel distributor line, it each has an annular seal carrier, which has a first sealing element for sealing the seal carrier against an end face of an inlet section of the fuel injector and with a second sealing element for sealing the seal carrier against the connecting piece of the fuel distributor line interacts.
- a insertable into a fuel inlet opening of the inlet section penetrates the annular seal carrier, so that the seal carrier between an upstream collar Socket and the inlet section of the fuel injector is locked in the radial direction.
- a disadvantage of the arrangement described in the abovementioned publication is that an additional component is required through the bushing which can be manufactured with small tolerances. Since the radial mobility of the seal carrier is only guaranteed if it still has a certain axial play and is not pressed against the inlet section by the bushing, the bushing must be inserted into the fuel inlet opening at a precisely defined depth during assembly. For this purpose, a precisely manufactured cylinder surface of the bushing and a bore made with a corresponding fit as a fuel inlet opening are necessary in order to achieve a tight fit of the bushing, as a result of which the required play for the seal carrier can be adjusted.
- JP-OS 08-312503 It is already known from JP-OS 08-312503 to seal a fuel injector which can be inserted into a receiving bore and has an inlet section by means of an O-ring on this inlet section with respect to a connecting piece of a fuel distributor line.
- the O-ring seals against an inner wall of the connecting piece.
- the fuel injection system according to the invention with the characterizing features of the main claim has the advantage that the O-rings used for sealing do not have to compensate for the position and angle deviations by a purely elastic deformation.
- the O-rings are not deformed on one side.
- the fuel injection system according to the invention has the advantage over the prior art that the additional component of the precise bush to be manufactured is saved.
- the fuel injection valve does not have to have an inlet bore made to fit. As a result, the manufacturing effort for these parts can be reduced and the manufacturing costs can be reduced accordingly.
- first sealing element is guided in a first annular groove in a downstream, radially oriented end face of the seal carrier and is radially slidably movable on the end face of the inlet section of the fuel injector.
- first sealing element is guided in a first annular groove in the end face of the inlet section of the fuel injection valve and is radially slidable on a downstream, radially oriented end face of the seal carrier. This simplifies the shape of the sealing element.
- additional annular groove in the end face of the inlet section of the fuel injector is less expensive to manufacture, since precise machining by turning is required in any case on components of the fuel injector.
- a lower and / or an upper support ring with a larger outer diameter than the seal carrier is present in the second annular groove downstream of the second sealing element and is radially freely movable. This can prevent excessive deformation of the O-ring and the resulting leaks in the fuel injection system.
- the securing ring can advantageously be welded to the inlet section or held in a groove in the inlet section. If the locking ring is guided in a groove, the manufacturing effort is considerably simplified, since only the position of this ring groove must be taken into account when manufacturing the parts of the fuel injector, which in any case takes place with small tolerances.
- Fig. 1 shows a section through an inventive
- Fuel distribution line, Fig. 2 shows a section through a further embodiment according to the invention in a partial representation of the connection area between the fuel injector and the
- FIG. 3 shows a further embodiment of a fuel injection system according to the invention in a detail corresponding to section III of FIG. 1.
- Fig. 1 shows an embodiment of the invention in an excerpt, sectional view. Only the connection area between a fuel injection valve 1 and a fuel distribution line 2 is shown. The fuel distribution line 2 is shown here only in the area of a connection piece 3.
- the fuel injector 1 has an inlet section 4 with a guide section 5, which is formed in one piece with the inlet section 4 of the fuel injector 1.
- An end face 6 is formed on the inlet section 4 at the transition to the guide section 5.
- the guide section 5 and the inlet section 4 are penetrated by an inlet bore 8 for the fuel.
- a seal carrier 9 is penetrated by the guide section 5 and locked between the inlet-side end face 6 of the inlet section 4 and a locking ring 10 which is arranged on the inlet-side end of the guide section 5 and protrudes radially outwards.
- the retaining ring 10 is preferably arranged on the guide section 5 of the fuel injection valve 1 with an axial distance a from the end face 6 shown for clarity, so that the seal carrier 9 is slightly axially movable with a play b.
- the Seal carrier 9 is therefore not between the
- Inlet section 4 of the fuel injector 1 is jammed, but can be moved radially in the radial direction within a displacement range c which is also shown for clarity.
- the seal carrier 9 has a radially oriented end face 11 opposite the end face 6 of the inlet section 4 of the fuel injection valve 1.
- a first circumferential annular groove 12 is formed on the seal carrier 9 in the end face 11 and serves to receive and guide a first sealing element 13 in the form of a sealing ring designed as an O-ring.
- the first sealing element 13 serves as an axial seal and seals the seal carrier 9 with respect to the inlet section 4 of the fuel injection valve 1.
- the first sealing element 13 is slidably movable on the end face 11 of the inlet section 4 of the fuel injector 1.
- the seal carrier 9 has a second annular groove 16 on a lateral surface 15 opposite a wall 14 of the connecting piece 3.
- the second annular groove 16 serves to receive and guide a second sealing element 17 in the form of a sealing ring designed as an O-ring.
- the second sealing element 17 effects a radial seal and seals the seal carrier 9 from the connecting piece 3.
- the second sealing element 17 is slidable in the connecting piece 3.
- the locking ring 10 is inserted in an annular groove 18 in the guide section 5 of the inlet section 4 of the fuel injector 1.
- the locking ring 10 if it is designed as an open ring, can easily be mounted by spreading it out with a suitable tool and sliding it over the guide section 5. Due to the internal stress of the locking ring 10, this is held in the annular groove 18. If the seal carrier 9 is subjected to the fuel pressure in the operating state, the entire upstream end face 6 of the seal carrier 9 up to its outer diameter is thus available as the contact surface for the fuel pressure on the upstream side. In contrast, the seal carrier 9 at its downstream end is exposed to the fuel pressure up to the first sealing element 13 at most, since the region located further radially is sealed.
- the seal carrier 9 is therefore acted upon by an effective, axial force component due to the fuel pressure, which presses the seal carrier 9 in the direction of the fuel injection valve 1.
- the first sealing element 13 is therefore pressed against the end face 6 of the inlet section 4 of the fuel injection valve 1, so that a good sealing effect is produced.
- the annular seal carrier 9 advantageously enables both radial compensation and axial compensation between the position of the inlet section 4 of the fuel injector 1 and the position of the connecting piece 3.
- the cost-effective, easy-to-manufacture design of the components is particularly advantageous.
- the inlet section 4 of the fuel injector 1, like all parts of the fuel injector 1, can be manufactured precisely and can be machined by turning.
- the formation of a guide section 5 with a pierced ring groove 18 represents a hardly any additional effort. In particular, only one size, namely the distance a between the ring groove 18 and the end face 6, must be exactly observed. Compared to an additional component and a bore to be made to fit, this saves considerable costs. Fig.
- FIG. 2 shows a further favorable embodiment of a fuel injection system according to the invention in an excerpt, sectional view.
- the connection area between a fuel injection valve 19 and a fuel distribution line 20 is shown, of which only one connection piece 21 is drawn.
- the fuel injection valve 19 has an inlet section 22, on which a guide section 23 is formed in one piece.
- An end face 24 is formed on the inlet section 22 at the transition to the guide section 23.
- the guide section 23 and the inlet section 22 are penetrated by an inlet bore 26 for the fuel.
- a seal carrier 27 is penetrated by the guide section 23 and is locked between the inlet-side end face 24 of the inlet section 22 and a locking ring 28, which is arranged on the inlet-side end of the guide section 23 and projects radially outwards.
- the securing ring 28 is connected to the guide section 23 by a circumferential weld seam 29.
- the seal carrier 27 is not jammed between the retaining ring 28 of the guide section 23 and the inlet section 22 of the fuel injector 19, but rather is movable in the radial direction.
- the seal carrier 27 has at its downstream end a radially oriented end face 30 opposite the end face 24 of the inlet section 22 of the fuel injection valve 9.
- a first circumferential annular groove 31 is formed, which is the receiving and Guidance of a first sealing element 32 in the form of an O-ring is used.
- the first sealing element 32 slidably seals the seal carrier 27 with respect to the inlet section 22 of the fuel injection valve 19.
- the seal carrier 27 has a second annular groove 35 on a lateral surface 34 opposite a wall 33 of the connecting piece 21.
- a second sealing element 36 in the form of an O-ring is guided in the second annular groove 35.
- the second sealing element 36 seals the seal carrier 27 with respect to the connecting piece 21 in a radially and slidably displaceable manner.
- the seal carrier 27 is further simplified in that the first annular groove 31 lies in the end face 24 of the fuel injection valve 19.
- the first annular groove 31 is easier and cheaper to manufacture on the fuel injection valve 19.
- the mode of operation is in no way impaired by the fact that the first sealing element 32 does not lie in the end face 30 of the seal carrier 27, but rather in the end face 24 of the inlet section 22 of the fuel injection valve 19.
- FIG. 3 shows a further embodiment of a fuel injection system according to the invention in a detail corresponding to section III of FIG. 1.
- the embodiment differs from the fuel injection system 1 of FIG. 1 only in this detail section.
- the same reference numerals are therefore used for the same parts.
- the seal carrier 9 is shown in section and shows the first annular groove 12 with the first sealing element 13.
- the second sealing element 17 is guided in the second annular groove 16. In a favorable embodiment it is downstream of the second sealing element 17, which is designed as an O-ring, a support ring 37 is arranged.
- the inner diameter of the support ring 37 is dimensioned such that it does not extend into the bottom of the second annular groove 16 and is consequently radially movable.
- the outer diameter of the seal carrier 9 can be made smaller, and the sealing element 17 can be exposed to larger tilting angles without deforming inadmissibly.
- upstream of the second sealing element 17 is guided in the second annular groove 16 and an upper support ring with a larger outer diameter than the seal carrier 9 is radially freely movable.
- the seal carrier 9 preferably has a radially circumferential conical bevel 38 at its upstream end.
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
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002541247A JP4092197B2 (ja) | 2000-11-11 | 2001-11-12 | 燃料噴射装置 |
DE50102634T DE50102634D1 (de) | 2000-11-11 | 2001-11-12 | Brennstoffeinspritzanlage |
EP01993764A EP1332285B1 (de) | 2000-11-11 | 2001-11-12 | Brennstoffeinspritzanlage |
US10/169,963 US7195003B2 (en) | 2000-11-11 | 2001-11-12 | Fuel injection system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10056038A DE10056038A1 (de) | 2000-11-11 | 2000-11-11 | Brennstoffeinspritzanlage |
DE10056038.5 | 2000-11-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002038950A1 true WO2002038950A1 (de) | 2002-05-16 |
Family
ID=7663019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2001/004207 WO2002038950A1 (de) | 2000-11-11 | 2001-11-12 | Brennstoffeinspritzanlage |
Country Status (5)
Country | Link |
---|---|
US (1) | US7195003B2 (de) |
EP (1) | EP1332285B1 (de) |
JP (1) | JP4092197B2 (de) |
DE (2) | DE10056038A1 (de) |
WO (1) | WO2002038950A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006514193A (ja) * | 2003-02-06 | 2006-04-27 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 内燃機関のための燃料噴射装置 |
EP1933024A2 (de) * | 2006-12-13 | 2008-06-18 | Delphi Technologies, Inc. | Ringförmiger Halter für einen Brennstoffinjektor in einer Brennstoffverteiler |
WO2013083522A1 (de) * | 2011-12-08 | 2013-06-13 | Robert Bosch Gmbh | Einspritzventil, insbesondere für eine brennkraftmaschine |
WO2021083701A1 (de) * | 2019-10-29 | 2021-05-06 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10256668A1 (de) | 2002-12-04 | 2004-07-29 | Robert Bosch Gmbh | Stützelement |
DE102004055317A1 (de) | 2004-11-16 | 2006-05-24 | Bosch Rexroth Aktiengesellschaft | Elektrische Drehfeldmaschine und Primärteil |
US20090013968A1 (en) * | 2007-07-09 | 2009-01-15 | Keegan Kevin R | Vapor recovery system for a direct injector fuel rail assembly |
EP2093414B1 (de) * | 2008-02-19 | 2011-07-20 | Continental Automotive GmbH | Kupplungsvorrichtung |
EP2093411B1 (de) * | 2008-02-19 | 2011-01-19 | Continental Automotive GmbH | Kupplungsvorrichtung |
EP2093412B1 (de) * | 2008-02-19 | 2011-01-19 | Continental Automotive GmbH | Kupplungsvorrichtung |
DE602008004428D1 (de) * | 2008-02-19 | 2011-02-24 | Continental Automotive Gmbh | Kupplungsvorrichtung |
EP2112367B1 (de) * | 2008-04-23 | 2011-09-14 | Continental Automotive GmbH | Kupplungsanordnung und Kraftstoffeinspritzventil |
US20090321536A1 (en) * | 2008-06-30 | 2009-12-31 | Caterpillar Inc. | Piston having channel extending through piston head |
EP2148082B1 (de) * | 2008-07-24 | 2011-10-19 | Continental Automotive GmbH | Kupplungsanordnung für ein Einspritzventil und Einspritzventil |
EP2208883B1 (de) * | 2009-01-19 | 2015-07-22 | Continental Automotive GmbH | Kupplungsvorrichtung |
US8069842B2 (en) * | 2009-07-02 | 2011-12-06 | Robert Bosch Gmbh | Injector mounting assembly |
DE102013222508B4 (de) | 2013-11-06 | 2023-07-27 | Robert Bosch Gmbh | Ventil zum Zumessen von unter Hochdruck stehendem Fluid |
DE102017108270B4 (de) | 2017-04-19 | 2023-11-09 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Dichtungskassette für einen Injektor einer Verbrennungskraftmaschine und Injektoranordnung für eine Verbrennungskraftmaschine |
JP6962208B2 (ja) * | 2018-01-17 | 2021-11-05 | トヨタ自動車株式会社 | 密封構造 |
US11174825B2 (en) * | 2019-02-11 | 2021-11-16 | Caterpillar Inc. | Seal configuration for fuel injector |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5120084A (en) * | 1989-09-27 | 1992-06-09 | Usui Kokusai Sangyo Kaisha Limited | Connection structure for branching connector in high-pressure fuel rail |
US5372113A (en) * | 1994-01-25 | 1994-12-13 | Siemens Automotive L.P. | Weir control of fuel level in a fuel rail tube for reducing the risk of hydra-lock |
US5551400A (en) * | 1993-11-18 | 1996-09-03 | Siemens Automotive L.P. | Mounting adapter for air-assist fuel injector |
JPH08312503A (ja) | 1995-03-10 | 1996-11-26 | Mitsubishi Motors Corp | 固定対象物、特に筒内噴射型内燃機関用インジェクタの取付構造 |
DE19725076A1 (de) | 1997-06-13 | 1998-12-17 | Bosch Gmbh Robert | Brennstoffeinspritzanlage |
DE19832077A1 (de) * | 1998-07-16 | 2000-01-20 | Volkswagen Ag | Leitungskupplung, insbesondere zur Verbindung von Kraftstoffleitungen in Kraftfahrzeugen |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
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US4693223A (en) * | 1984-06-21 | 1987-09-15 | General Motors Corporation | Fuel injection valve connection |
US4984548A (en) * | 1989-11-20 | 1991-01-15 | Sharon Manufacturing Company | Fuel injector retainer clip |
JPH05506967A (ja) * | 1990-06-08 | 1993-10-07 | エリン・トランスフォルマトーレン・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング | 変圧器 |
DE19639585A1 (de) * | 1996-09-26 | 1998-04-02 | Bosch Gmbh Robert | Brennstoffverteiler |
DE19735665A1 (de) * | 1997-06-25 | 1999-01-07 | Bosch Gmbh Robert | Brennstoffeinspritzanlage |
JP2000018125A (ja) * | 1998-07-01 | 2000-01-18 | Mitsubishi Electric Corp | 筒内噴射用燃料噴射弁 |
US6148767A (en) * | 1999-04-16 | 2000-11-21 | Manchess; Lena M. | Apparatus and method for providing an animal with water |
US6325049B1 (en) * | 1999-06-23 | 2001-12-04 | Siemens Automotive Corporation | Fuel injector with orientation feature for orienting injector with respect to the manifold or head |
US6374806B1 (en) * | 1999-10-25 | 2002-04-23 | International Truck And Engine Corp. | Actuating fluid delivery system for a fuel injector |
US6481646B1 (en) * | 2000-09-18 | 2002-11-19 | Siemens Automotive Corporation | Solenoid actuated fuel injector |
DE10056005A1 (de) * | 2000-11-11 | 2002-05-16 | Bosch Gmbh Robert | Brennstoffeinspritzanlage |
-
2000
- 2000-11-11 DE DE10056038A patent/DE10056038A1/de not_active Withdrawn
-
2001
- 2001-11-12 EP EP01993764A patent/EP1332285B1/de not_active Expired - Lifetime
- 2001-11-12 DE DE50102634T patent/DE50102634D1/de not_active Expired - Lifetime
- 2001-11-12 US US10/169,963 patent/US7195003B2/en not_active Expired - Fee Related
- 2001-11-12 WO PCT/DE2001/004207 patent/WO2002038950A1/de active IP Right Grant
- 2001-11-12 JP JP2002541247A patent/JP4092197B2/ja not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5120084A (en) * | 1989-09-27 | 1992-06-09 | Usui Kokusai Sangyo Kaisha Limited | Connection structure for branching connector in high-pressure fuel rail |
US5551400A (en) * | 1993-11-18 | 1996-09-03 | Siemens Automotive L.P. | Mounting adapter for air-assist fuel injector |
US5372113A (en) * | 1994-01-25 | 1994-12-13 | Siemens Automotive L.P. | Weir control of fuel level in a fuel rail tube for reducing the risk of hydra-lock |
JPH08312503A (ja) | 1995-03-10 | 1996-11-26 | Mitsubishi Motors Corp | 固定対象物、特に筒内噴射型内燃機関用インジェクタの取付構造 |
DE19725076A1 (de) | 1997-06-13 | 1998-12-17 | Bosch Gmbh Robert | Brennstoffeinspritzanlage |
US6102007A (en) * | 1997-06-13 | 2000-08-15 | Robert Bosch Gmbh | Fuel injection system |
DE19832077A1 (de) * | 1998-07-16 | 2000-01-20 | Volkswagen Ag | Leitungskupplung, insbesondere zur Verbindung von Kraftstoffleitungen in Kraftfahrzeugen |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006514193A (ja) * | 2003-02-06 | 2006-04-27 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 内燃機関のための燃料噴射装置 |
EP1933024A2 (de) * | 2006-12-13 | 2008-06-18 | Delphi Technologies, Inc. | Ringförmiger Halter für einen Brennstoffinjektor in einer Brennstoffverteiler |
EP1933024A3 (de) * | 2006-12-13 | 2009-09-09 | Delphi Technologies, Inc. | Ringförmiger Halter für einen Brennstoffinjektor in einer Brennstoffverteiler |
WO2013083522A1 (de) * | 2011-12-08 | 2013-06-13 | Robert Bosch Gmbh | Einspritzventil, insbesondere für eine brennkraftmaschine |
CN103975158A (zh) * | 2011-12-08 | 2014-08-06 | 罗伯特·博世有限公司 | 特别是用于内燃机的喷射阀 |
WO2021083701A1 (de) * | 2019-10-29 | 2021-05-06 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
US11821396B2 (en) | 2019-10-29 | 2023-11-21 | Robert Bosch Gmbh | Fuel injector |
Also Published As
Publication number | Publication date |
---|---|
EP1332285B1 (de) | 2004-06-16 |
EP1332285A1 (de) | 2003-08-06 |
US7195003B2 (en) | 2007-03-27 |
DE50102634D1 (de) | 2004-07-22 |
JP2004513298A (ja) | 2004-04-30 |
US20050115546A1 (en) | 2005-06-02 |
JP4092197B2 (ja) | 2008-05-28 |
DE10056038A1 (de) | 2002-05-16 |
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