EP1454057A1 - Valve for the control of fluids - Google Patents
Valve for the control of fluidsInfo
- Publication number
- EP1454057A1 EP1454057A1 EP02781154A EP02781154A EP1454057A1 EP 1454057 A1 EP1454057 A1 EP 1454057A1 EP 02781154 A EP02781154 A EP 02781154A EP 02781154 A EP02781154 A EP 02781154A EP 1454057 A1 EP1454057 A1 EP 1454057A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- clamping nut
- sealing element
- valve according
- plastic ring
- 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
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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
-
- 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
- F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
-
- 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
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
- F02M2200/8076—Fuel injection apparatus manufacture, repair or assembly involving threaded members
-
- 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
- F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
- F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
- F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
Definitions
- the present invention relates to a valve for controlling liquids.
- the present invention relates to an injection valve for injecting fuel into a combustion chamber of an internal combustion engine.
- Injectors for injecting fuel into a combustion chamber of an internal combustion engine are known in various configurations. Injection valves of this type are used, for example, in conjunction with accumulator injection systems in which fuel is stored in a storage space under high pressure in order to enable a pressure-constant injection of the fuel.
- Such injection valves consist of several components, such as a holding body, a valve plate, a throttle plate and a nozzle body, which are arranged one after the other in the axial direction of the valve. The individual components of the valve are clamped against each other by means of a nozzle clamping nut.
- Suitable gaskets are required to prevent fuel from escaping from the valve, e.g. into the engine compartment.
- deformations at the sealing planes between the individual components can occur, which can lead to fuel leakage.
- a sealing element such as an O-ring
- a recess is provided for receiving the sealing element on the holding body in order to receive the sealing element.
- assembly problems can occur in particular when using an O-ring, since the O-ring during the Assembly can be twisted, whereby the seal can no longer be guaranteed safely.
- additional notch points are created in the valve, at which crack formation in the component is possible.
- the valve for controlling liquids according to the invention has the advantage over the fact that it enables a safe and simple sealing, it being particularly inexpensive to provide. Furthermore, there are no geometric weakenings on the components of the valve in the valve according to the invention, which could cause an additional notch effect on the valve.
- a sealing element is arranged between a thread of a clamping nut, which serves to brace the individual components of the valve, and a thread arranged on a component for screwing to the clamping nut. Due to this positioning of the sealing element between the two threads, it is not necessary that a recess for receiving a sealing element has to be formed in one of the components, which recess can reduce the strength of the component and cause a notch effect. This also makes it inexpensive and simple Assembly of the sealing element possible.
- an inexpensive and simple configuration of sealing the valve to the outside can be provided.
- the sealing element is preferably designed as a plastic ring or as a shrink tube.
- the shrink tube is preferably made of plastic, e.g. made of PTFE, and is placed over the external thread on the component. When the clamping nut is mounted on the component provided with an external thread, the shrink tube then lies against the threads so that a secure seal is obtained.
- a recess is preferably formed on the clamping nut for receiving the plastic ring. This recess is particularly preferably provided at the upper end of the clamping nut.
- the plastic ring preferably has at least one protruding area which engages in a correspondingly formed additional recess on the clamping nut.
- one or more holes or one or more grooves can be provided on the clamping nut, for example.
- inward curling can be provided at the outermost end region of the clamping nut.
- the sealing element is designed as a coating. The coating can be easily and inexpensively applied to either the external thread on the component or the internal thread on the clamping nut or both threads.
- the coating is preferably formed from PTFE or another liquid-applied plastic or adhesive.
- a groove is preferably provided between two components, via which the leak can be discharged into a low-pressure area of the valve.
- the present invention is particularly applicable to fuel injectors for memory injection systems, such as Common rail injection systems used.
- a low-pressure area of the valve is sealed against the outside by the seal between the clamping nut and the components of the valve.
- the sealing elements according to the invention are designed in such a way that, after the valve has been dismantled, simple reinstallation together with the sealing element is possible.
- Figure 1 shows a schematic sectional view of a
- FIG. 2 shows an enlarged section of the valve shown in FIG. 1,
- FIG. 3 shows an enlarged section of a seal according to a second exemplary embodiment of the present invention
- Figure 4 shows the seal according to the second
- FIG. 5 shows a possibility of fixing the seal in accordance with the second exemplary embodiment
- FIG. 6 shows another possibility of fixing the sealing element in accordance with the second exemplary embodiment
- FIG. 7 shows a further possibility of fixing the sealing element according to the second exemplary embodiment
- FIGS. 8a to 8c show the assembly of a sealing element according to a third embodiment of the present invention. Description of the embodiments
- a valve 1 with a sealing element according to a first exemplary embodiment of the present invention is described below with reference to FIGS. 1 and 2.
- FIG. 1 shows a fuel injection valve 1, which essentially consists of several components arranged one after the other in the axial direction X-X of the valve.
- the components of the valve 1 are a holding body 2, a valve plate 3, a throttle plate 4 and a nozzle body 5. These components of the valve are braced against one another by means of a nozzle clamping nut 6.
- the nozzle clamping nut 6 has an internal thread 10 at its upper end region (cf. FIG. 2), with which it is screwed onto an external thread 9 of the holding body 2.
- a sealing element in the form of a coating 8 is arranged between the internal thread 10 of the nozzle clamping nut 6 and the external thread 9 of the holding body 2.
- the coating 8 can be applied either to the internal thread 10 or the external thread 9 or to both threads.
- the coating 8 runs around the entire circumference of the thread. This coating 8 according to the invention reliably seals a low-pressure region of the valve 1 against the external environment.
- the coating 8 is formed essentially at the upper end region of the nozzle clamping nut 6 and has a height H which is between 1/3 and 1/2 the height of the thread in the axial direction of the valve is sufficient.
- the coating 8 can simply be applied to one or both threads before assembly, so that the seal is present after the nozzle clamping nut 6 has been screwed onto the holding body 2.
- FIGS. 3 and 4 show a seal in accordance with a second exemplary embodiment of the present invention. Functionally identical parts are identified by the same reference numerals as in the first exemplary embodiment.
- a plastic ing 11 is used as the sealing element in the second embodiment.
- the plastic ring is shown in the assembled state, ie with the nozzle clamping nut 6 screwed onto the holding body 2, and in FIG. 4 the plastic ring 11 is shown before assembly.
- the plastic ring 11 is deformed during assembly in such a way that it lies tightly against the external thread 9 on the holding body 2. This ensures an adequate seal between the low pressure area of the valve and the outside.
- the plastic ring 11 has such a height that it covers approximately 1/3 of the threads that are in engagement.
- the sealing element itself forms part of the thread, so that a simple and inexpensive seal can be achieved.
- the seal results automatically when the nozzle clamping nut is screwed onto the holding body 2.
- thread on Holding body 2 is preferably an M17x0.75 thread.
- the plastic ring 11 is arranged in a recess 12 provided at the end region of the nozzle clamping nut 6.
- FIGS. 5 to 7 show different fixing options for fixing the plastic ring 11 on the nozzle clamping nut 6.
- FIG. 5 there are two bores 14 lying opposite one another by 180 °, into which two projecting areas 13 each formed corresponding to the bore 14 engage.
- FIG. 6 A similar position fixing of the plastic ring 11 is shown in FIG. 6, in which two mutually opposite projecting areas 13 engage in two correspondingly designed grooves 15 on the upper end area of the nozzle clamping nut 6.
- the position fixing of the exemplary embodiment shown in FIG. 7 consists in a flange 16 which is directed towards the inside of the nozzle clamping nut 6 and fixes the plastic ring 11.
- FIGS. 8a to 8c show a sealing element according to a third exemplary embodiment of the present invention.
- the sealing element according to the third embodiment consists of a shrink tube 17, which is applied to the external thread 9 of the holding body 2.
- the shrink tube 17 is shown in the tensioned state, in which it is applied to the external thread 9 of the holding body 2.
- the height of the shrink tube 17 is approximately half the height of the thread 9.
- the shrink tube 17 is in assembled state set out in which it rests on the thread tips of the external thread 9.
- the shrink tube 17 is deformed in such a way that it rests directly on the external thread 9 and on the internal thread of the nozzle clamping nut.
- This state of the shrink tube 17 is shown in Figure 8c.
- the nozzle clamping nut is not shown in FIG. 8c.
- the shrink tube 17 lies tightly between the two threads, so that a secure seal of the
- the shrink tube 17 can remain on the holding body 2 after dismantling of the nozzle clamping nut 6 and can be reused.
- the present invention thus relates to a valve for controlling liquids, which has a plurality of components 2, 3, 4, 5 which are arranged one after the other in the axial direction X-X of the valve.
- An external thread 9 is formed on at least one of the components in order to engage an internal thread of a clamping nut 6.
- the clamping nut 6 serves to brace the components of the valve.
- a sealing element 8, 11, 17 is arranged between the internal thread 10 of the clamping nut 6 and the external thread 9 of the component 2.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
- Valve Housings (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10155413A DE10155413A1 (en) | 2001-11-10 | 2001-11-10 | Valve for controlling liquids |
DE10155413 | 2001-11-10 | ||
PCT/DE2002/004119 WO2003042531A1 (en) | 2001-11-10 | 2002-11-07 | Valve for the control of fluids |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1454057A1 true EP1454057A1 (en) | 2004-09-08 |
EP1454057B1 EP1454057B1 (en) | 2005-09-28 |
Family
ID=7705411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02781154A Expired - Lifetime EP1454057B1 (en) | 2001-11-10 | 2002-11-07 | Valve for the control of fluids |
Country Status (8)
Country | Link |
---|---|
US (1) | US6929247B2 (en) |
EP (1) | EP1454057B1 (en) |
JP (1) | JP4348185B2 (en) |
KR (1) | KR100935093B1 (en) |
CN (1) | CN100453799C (en) |
DE (2) | DE10155413A1 (en) |
ES (1) | ES2247390T3 (en) |
WO (1) | WO2003042531A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000063437A2 (en) | 1999-04-20 | 2000-10-26 | Illumina, Inc. | Detection of nucleic acid reactions on bead arrays |
EP1644634B1 (en) * | 2003-07-15 | 2006-11-02 | Siemens Aktiengesellschaft | Metering device for a pressurised fluid and method of forming the same |
JP2006207480A (en) * | 2005-01-28 | 2006-08-10 | Bosch Corp | Fuel injection valve |
JP4632177B2 (en) * | 2005-12-16 | 2011-02-16 | 小柳 司 | Method for producing disposable biodegradable container |
DE102006060657A1 (en) | 2006-12-21 | 2008-07-03 | Robert Bosch Gmbh | Fuel injector |
DE102006062008A1 (en) | 2006-12-29 | 2008-07-03 | Robert Bosch Gmbh | High pressure applying device for air-compressing auto-ignition internal combustion engine, has high pressure channel comprising blind hole, where section hole in region of hole base opens out into blind hole over sectional surface |
DE102007002760A1 (en) * | 2007-01-18 | 2008-07-24 | Robert Bosch Gmbh | Fuel injector with integrated pressure booster |
DE102008043347A1 (en) | 2008-10-31 | 2010-05-06 | Robert Bosch Gmbh | Measuring and testing device for determining leakage quantity in fuel injecting valve of self-igniting internal-combustion engine, has ultrasonic receiver, where part of ultrasonic wave is guided from test piece to receiver over probe |
DE102011076957A1 (en) * | 2011-06-06 | 2012-12-06 | Robert Bosch Gmbh | Fuel injection valve for internal combustion engines |
DE102012208075A1 (en) * | 2012-05-15 | 2013-11-21 | Man Diesel & Turbo Se | Injector for a fuel supply system of an internal combustion engine and fuel supply system |
DE102016123055A1 (en) * | 2016-11-30 | 2018-05-30 | Man Diesel & Turbo Se | Fuel supply system and power distribution block |
TR201713993A2 (en) * | 2017-09-21 | 2019-04-22 | Bosch Sanayi Ve Tic A S | ONE FUEL INJECTOR |
US20220178335A1 (en) * | 2019-04-15 | 2022-06-09 | Cummins Inc. | Fuel injector with radially orientable nozzle holes using splines |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1210381A (en) * | 1967-01-13 | 1970-10-28 | Bryce Berger Ltd | Liquid fuel injection nozzle units for internal combustion engines |
US4176822A (en) * | 1977-10-31 | 1979-12-04 | Chrysler Corporation | Fuel injection system and control valve for multi-cylinder engines |
DE3000061C2 (en) * | 1980-01-03 | 1993-10-14 | Bosch Gmbh Robert | Fuel injection nozzle for internal combustion engines |
CN1015402B (en) * | 1986-10-11 | 1992-02-05 | 瓦洛海克股份有限公司 | Threaded connection joint of a steel tube with sealing unit at the threaded portion |
DE4317627C2 (en) * | 1993-05-27 | 1996-05-09 | Harald Schulz | Process for the maintenance of a valve for gas or liquid lines |
CN1045106C (en) * | 1994-03-03 | 1999-09-15 | 中国科学院长春应用化学研究所 | Fluoride thread sealant |
US5467963A (en) * | 1994-04-13 | 1995-11-21 | Cummins Engine Company, Inc. | Two-piece collet adjusting nut for a fuel injector solenoid valve |
CN2260938Y (en) * | 1996-08-16 | 1997-08-27 | 王力人 | Screwthrad sealing connection structure |
DE19645900A1 (en) * | 1996-11-07 | 1998-05-14 | Bosch Gmbh Robert | Fuel injection valve for internal combustion engine |
US6047899A (en) * | 1998-02-13 | 2000-04-11 | Caterpillar Inc. | Hydraulically-actuated fuel injector with abrupt end to injection features |
DE10017113B4 (en) * | 2000-04-06 | 2006-02-09 | Ina-Schaeffler Kg | locknut |
DE10121531A1 (en) * | 2001-05-03 | 2002-11-14 | Siemens Ag | fuel injector |
DE10133167A1 (en) * | 2001-07-07 | 2003-01-23 | Bosch Gmbh Robert | High-pressure fuel device |
US6675049B2 (en) * | 2001-07-17 | 2004-01-06 | Medtronic, Inc. | Method and apparatus for automatic implantable medical lead recognition and configuration |
-
2001
- 2001-11-10 DE DE10155413A patent/DE10155413A1/en not_active Withdrawn
-
2002
- 2002-11-07 JP JP2003544331A patent/JP4348185B2/en not_active Expired - Fee Related
- 2002-11-07 KR KR1020047006843A patent/KR100935093B1/en not_active IP Right Cessation
- 2002-11-07 CN CNB028063139A patent/CN100453799C/en not_active Expired - Fee Related
- 2002-11-07 US US10/250,775 patent/US6929247B2/en not_active Expired - Fee Related
- 2002-11-07 ES ES02781154T patent/ES2247390T3/en not_active Expired - Lifetime
- 2002-11-07 WO PCT/DE2002/004119 patent/WO2003042531A1/en active IP Right Grant
- 2002-11-07 EP EP02781154A patent/EP1454057B1/en not_active Expired - Lifetime
- 2002-11-07 DE DE50204423T patent/DE50204423D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO03042531A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR100935093B1 (en) | 2010-01-06 |
ES2247390T3 (en) | 2006-03-01 |
US6929247B2 (en) | 2005-08-16 |
JP4348185B2 (en) | 2009-10-21 |
US20040046059A1 (en) | 2004-03-11 |
WO2003042531A1 (en) | 2003-05-22 |
JP2005509781A (en) | 2005-04-14 |
CN1671962A (en) | 2005-09-21 |
DE50204423D1 (en) | 2005-11-03 |
DE10155413A1 (en) | 2003-05-22 |
CN100453799C (en) | 2009-01-21 |
KR20040060971A (en) | 2004-07-06 |
EP1454057B1 (en) | 2005-09-28 |
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