EP1467086A1 - Injection valve with two adjusting tubes and method for adjusting a pretension of a spring on a closing member of an injection valve - Google Patents
Injection valve with two adjusting tubes and method for adjusting a pretension of a spring on a closing member of an injection valve Download PDFInfo
- Publication number
- EP1467086A1 EP1467086A1 EP03008178A EP03008178A EP1467086A1 EP 1467086 A1 EP1467086 A1 EP 1467086A1 EP 03008178 A EP03008178 A EP 03008178A EP 03008178 A EP03008178 A EP 03008178A EP 1467086 A1 EP1467086 A1 EP 1467086A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- spring
- valve
- injection
- fuel
- 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
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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
- F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
- F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
- F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
- F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
- F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
- F02M51/0642—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature having a valve attached thereto
-
- 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
- F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
-
- 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
- F02M2200/505—Adjusting spring tension by sliding spring seats
Definitions
- a main advantage of the injection valve according to claim 1 is that it is possible to adjust the tension of the spring that biases the valve closing element in a valve closing position of the valve more precisely.
- the upper first adjusting tube it is possible to determine the tension of the spring at a first step.
- a second step allows for increasing the tension of the spring using the second lower adjusting tube. As a result, it is possible to adjust more injection valves to the predetermined requirements.
- the first and the second tube 2, 3 can be made of copper alloy.
- the adjusting tubes 2, 3 could be welded, swaged or glued to the inlet tube 1.
- the inlet tube 1 could be realized as a welded tube, a seamless welded tube or a tube formed from a rolled thin sheet. It could be a flanged or a dished part, an extruded part, a press-forged part or a machined part from a solid rod.
- the inlet tube could have different material thickness along the body.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
- The invention relates to an injection valve with a closing member that is dedicated to a valve seat. The closing member is stressed towards the valve seat by a spring. The spring itself is adjacent to an adjusting tube that pre-stresses the spring against the valve closing element. For a precise function of the injection valve, the spring has to push the valve closing element towards the valve seat with a predetermined preload. For adjusting the preload of the spring, the adjusting tube is pushed nearer to the closing element step by step. At each step, the injection valve is opened during a predetermined time and the injected amount of fuel is ascertained. If the injected amount of fuel is the same as the predetermined amount, then the position of the adjusting tube is correct and the adjusting tube is fixed with the housing of the injection valve. If the injected amount is too much, the adjusting tube is positioned a step nearer to the closing element increasing the preload with which the spring is acting on the closing member. Using this procedure, the injecting function of the injection valve is calibrated. After fixing the adjusting tube, the function of the injection valve is ascertained again. If the injection function of the injection valve deviates from a predetermined function, the injection valve cannot be used as the preload of the spring cannot be adjusted in such a way that the injection valve injects the predetermined amount of fuel. The faulty injection valve has to be separated out.
- The US patent 5,967,419 describes a fuel injector with a valve, with a valve seat, with a valve closing element that is dedicated to the valve seat. The valve closing element is connected to an armature. The armature is preloaded by a spring to the valve seat. The spring is arranged in a tube and adjacent to a spring pin that is arranged in the tube as well. The spring pin is press-fit within the tube. The spring normally biases the armature in a closing direction of the valve.
- The object of the invention is to provide an injection valve with a spring the pre-tension of which could be changed after fixing the adjusting tube, if a test of the injection valve shows that the pre-tension of the spring is not correct.
- A further task of the invention is to provide a method for adjusting an injection valve with a valve closing member that is preloaded by a spring towards a valve seat providing the possibility to adjust the pre-tension of the spring after a first fixing of an adjusting tube that pre-tenses the spring towards the valve closing member.
- The task of the invention is solved by an injection valve according to claim 1 and by a method for adjusting the injection valve according to
claim 9. - A main advantage of the injection valve according to claim 1 is that it is possible to adjust the tension of the spring that biases the valve closing element in a valve closing position of the valve more precisely. By using the upper first adjusting tube, it is possible to determine the tension of the spring at a first step. However, if the injection function of the injection valve does not fulfill predetermined requirements, a second step allows for increasing the tension of the spring using the second lower adjusting tube. As a result, it is possible to adjust more injection valves to the predetermined requirements.
- In a preferred embodiment of the invention, the first and the second adjusting tubes have different inner diameters, whereby the lower, second adjusting tube comprises a smaller diameter than the upper first adjusting tube. Using this embodiment, the second adjusting tube can be pushed by means of a pushing tube that is inserted into the first adjusting tube. The pushing tube can also be used for supplying fuel to the fuel chamber. The test and adjusting process is therefore easily carried out.
- In a further preferred embodiment, the first and the second tube are guided within a cylindrical chamber which has roughly the same inner diameter as the outer diameter of the first and the second tube. This embodiment provides a precise guiding of the first and the second tube. Furthermore, the first and the second tube could easily be fixed with the wall of the cylindrical chamber by small plastic deformations of the wall, for example by a crimping process.
- In an advantageous embodiment of the invention, the first and/or the second tube comprise at the outer face circular grooves. The circular grooves support the fixing to the first and the second tube to the inlet tube within that they are guided. Using the grooves, a secure connection between the first and the second tube and the inlet tube is possible by a small plastic deformation of the inner diameter of the inlet tube.
-
- Figure 1
- is a longitudinal sectional view of an injector according to an embodiment of the present invention.
- Figure 2
- depicts the two stages of the first and the second tube using the inventive adjusting procedure.
- A preferred embodiment of an injection valve according to the present invention will now be described with reference to the drawings.
- Figure 1 is a schematic view of an injection valve as it is used for motor vehicle engines. The injection valve is basically symmetrical to a central axis of symmetry. Prior to explaining an embodiment of the invention in detail, it is to be understood that the invention is not limited in this application to the details of construction and the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or being carried out in various ways.
- The injection valve includes a valve body 7. On the inside, the valve body 7 has an
orifice plate 12 adjacent to a lower end of the valve body 7. Theorifice plate 12 includes anorifice 9. The valve body 7 comprises aninjection chamber 15, in which aneedle 6 is arranged. Theneedle 6 is connected by an upper end with an armature 5. The armature 5 has the shape of a hollow cylinder that is guided in a support tube 4. The support tube 4 is fixed to the valve body 7 by asleeve body 21. The lower end of theneedle 6 comprises a sealingface 10 that is dedicated to a valve seat 8 of theorifice plate 12. The valve seat 8 surrounds theorifice 9. - Adjacent to the armature 5, an inlet tube 1 is fixed within the support tube 4. Within the inlet tube 1, a spring 11 is arranged which is biased between the armature 5 and a
second tube 3. Thesecond tube 3 is fixed in the inner bore of the inlet tube 1. At a given distance above thesecond tube 3, afirst tube 2 is arranged as well within the bore of the inlet tube 1. The fixing of the first andsecond tube first tube 2 is also fixed to the inlet tube 1. The spring 11 biases the armature 5 and theneedle 6 with its sealingface 10 to the valve seat 8 in a closing position of the valve. - The support tube 4 is circumvented by a
housing 19, in which acoil assembly 13 is arranged. Thecoil assembly 13 is electrically connected with a connector terminal which is arranged in aconnector 14. - The armature 5 comprises a
second ring face 18 that is adjacent to a first ring face 17 of the inlet tube 1. In the closed position of the valve, the first and the second ring faces 17, 18 are arranged at a given distance. The injection valve comprises afuel passage way 16 that guides through the bore of the inlet tube 1, the bore of the first and thesecond tube bore 20 of the armature, that is connected to theinjection chamber 15. The inlet tube 1 can be connected with a fuel supply, delivering fuel to theinjection chamber 15. - The fuel is injected when the
coil assembly 13 is energized by a voltage that is applied to the connector terminal. The energized coil of thecoil assembly 13 lifts the armature 5 up to the first ring face 17 compressing the spring 11. As a result, the sealingface 10 of theneedle 6 is lifted off the valve seat 8, opening a fluid connection between theinjection chamber 15 and theorifice 9. Therefore, fuel is injected by theorifice 9. - The
coil assembly 13 is re-energized to stop the injection. The result is that the armature 5 is pushed in the direction of the valve seat 8 by the spring 11, until the sealingface 10 rests upon the valve seat 8, thereby disconnecting thefuel chamber 15 from theorifice 9. The valve is now in a closed position. - The first and the
second tube tools 22 are used which are pushed against the outer face of the inlet tube 1 at opposite sides. - The inlet tube 1 advantageously comprises an
inner bore 23 that has a greater diameter in an upper section than in a lower section. Thefirst tube 2 is arranged partly in the upper and in the lower section of theinner bore 23. Thefirst tube 2 is fixed within the lower section of the inlet tube 1. - The embodiment shown in Figure 1 is an example for an injection valve with a spring-preloaded needle the spring tension of which can be adjusted twice. After a first step by means of which the tension of the spring 11 was determined by the position of the
first tube 2, in a second step the tension of the spring 11 could be increased by moving thesecond tube 3 down towards the spring 11 and also fixing thesecond tube 3 to the inlet tube 1. Therefore, the first and thesecond tube second tube - If the tension of the spring 11 could be precisely adjusted in the first step, only the
first tube 2 is fixed to the inlet tube 1 and thesecond tube 2 is adjacent to thefirst tube 2 and not fixed to the inlet tube 1. - The
first tube 2 has an inner diameter D1 that is greater than a second inner diameter D2 of thesecond tube 3. The outer diameters of the first and thesecond tube - Referring to Figure 2, the inventive procedure for a precise preloading of the spring 11 will be explained in the following. The first and the
second tubes - At a first step, a pre-calibration run is operated and, if required, in a second step a calibration operation is follows. Basically, the injection valve is a solenoid valve. Fuel is delivered when the
coil assembly 13 is energized. When thecoil assembly 13 is energized, the armature/needle assembly 5, 6 actually moves upwards, pulling theneedle 6 of the valve seat 8 to start an injection of fuel. A bias force is provided by the spring 11 in order to keep theneedle 6 on the valve seat 8 and to prevent an injection in the deenergized condition. When the injection valve is energized for a short duration (dynamic flow), the fuel flow through the injection valve is highly sensitive to the bias force provided by the spring 11. Therefore, the bias force of the spring 11 is used in order to calibrate the dynamic flow function of the injection valve. - In Figure 2, the situation for the pre-calibration process is shown on the left side. At this point of time, the first and the
second tube rod 24 extends from a manufacturing line into the inlet tube at a given speed, forcing the first and thesecond adjusting tubes coil assembly 13 of the injection valve is continually cycled with short pulses of electric energy and the injected amount of fuel is measured. During the calibration step, therod 24 and the first andsecond tubes second tube first tube 2 is locked in its position by a mechanical deformation of the inner diameter of the inlet tube 1. For the mechanical deformation, crimpingtools 22 are used in order to deform the outer and the inner diameter of the inner tube 1. It is possible that by the crimping process the ideal position of thefirst tube 2 is changed. This results in an undesired dynamic injection function of the injection valve. - During the crimping process, material of the inlet tube 1 is forced to flow into the grooves of the
first adjusting tube 2. As the inlet tube 1 material flows into notches of the first adjusting tube, an actual force is created. The actual force may move thefirst tube 2, changing the preload of the spring 11. - After the crimping operation the injection valve is submitted to a post-calibration run for a final flow-check. If the injected fuel in the final flow-check is outside a required specification, a second calibration step is carried out. If in the final check the injection valve injects too much fuel during the injection phase, a
second adjusting tool 25 is used to move down thesecond tube 3 step by step. Thesecond tool 25 is a pipe that has an outer diameter that is smaller than the inner diameter of thefirst tube 2 and a larger diameter than the inner diameter of thesecond tube 3. With thesecond tool 25, thesecond tube 3 is pushed down towards the armature 5. The inner bore of thesecond tool 25 is used to supply fuel to the fuel chamber that is needed for the injection. At each step, the injection valve is opened and the injected amount of fuel is measured and compared with a predetermined range of the specification. If the injected amount of fuel is not within the predetermined range, thesecond tube 3 is pushed down a further step to the spring 11. Then, the injection valve is opened again, the injected amount of fuel is measured and compared with the predetermined range. If the injected amount of fuel is within the predetermined range of the specification, thesecond tube 3 is fixed to the inlet tube 1 by a crimping process by means of crimpingtools 22. - In this position, there is a distance D between the lower end of the
first tube 2 and the upper and of thesecond tube 3. Now thesecond tube 3 determines the tension of the spring 11 and the preload of theneedle 6 against the valve seat 8. The first and thesecond tube tubes tubes
Claims (10)
- Injection valve with a housing, in which an injection chamber (15) is arranged, the injection chamber (15) being connected with a fuel line, the injection chamber (15) comprising a valve with a valve seat (8) and a valve closing element (6) that is dedicated to the valve seat (8), whereby an actor (5, 13) is arranged in the housing, that is usable for moving the valve closing element (6) to close or to open the valve, whereby a spring (11) that is arranged between the valve closing element (6) and a first tube (2), whereby the first tube (2) is arranged within an inlet tube (1), whereby the first tube (2) is fixed to the inlet tube (1),
characterized in that a second tube (3) is arranged between the spring (11) and the first tube (2), and that the second tube (3) is adjacent to a lower end of the spring (11). - Injection valve according to claim 1, characterized in that the second tube (3) comprises a face with which the second tube (3) is movable in the direction of the spring (11), that the second tube (3) has a smaller inner diameter than the first tube (2) and that the face is a ring face of an upper end of the second tube (3).
- Injection valve according to claim 1 or 2, characterized in that an outer diameter of the first and second tube (2, 3) is roughly the same as an inner diameter of the inlet tube (1) guiding the first tube and the second tube (2, 3) in one direction.
- Injection valve according to any one of the claims 1 to 3, characterized in that the inlet tube (1) can be used for delivering fuel to the injection chamber (15).
- Injection valve according to any one of the claims 1 to 4, characterized in that the second tube (3) is arranged at a given distance to the first tube (2), that the second tube (3) is fixed to the inlet tube (1) and that the second tube stresses (3) the spring (11).
- Injection valve according to any one of the claims 1 to 5, characterized in that the first and/or second tube (2, 3) comprise grooves (21) at an outer face.
- Injection valve according to any one of the claims 4 to 6, characterized in that the first and/or the second tube (2, 3) are fixed to the inlet tube (1) by a plastic deformation of the inlet tube (1).
- Injection valve according to any one of the claims 4 to 7, characterized in that the inlet tube (1) has a first section with a greater inner diameter and a second section with a smaller inner diameter, and that the second section is arranged downstream of the fuel flow, that the second tube (3) is arranged in the second section, and that the first tube (2) is partly arranged in the second and in the first section.
- Method for adjusting an injection function of a fuel injection valve with an actor (5, 13), a valve closing member (6), a spring (11) stressing the valve closing member (6) onto a valve seat (8) of an injection chamber (15), whereby the spring (11) is stressed by two tubes (2, 3) that are movably arranged one behind the other in an inlet tube (1), whereby fuel is delivered to the injection chamber (15) over the inlet tube, whereby the two tubes (2, 3) are moved in given steps nearer to the spring (11) increasing the preload of the spring (11), whereby after each step, the actor (5, 13) of the valve is activated for a given time to open the valve against the preload of the spring (11), whereby after each injection the injected amount of fuel is checked, the injected amount of fuel is compared with a given amount and the process is stopped, if the amount injected by the valve is the same as the predetermined amount and the upper tube (2) is fixed to the inlet tube (1),
Whereby in a second process fuel is delivered to the injection chamber (15), whereby the actor of the valve is activated for a given time to lift the valve closing member (6) off the valve seat (8) against the preload of the spring (11), whereby after the injection the injected amount of fuel is checked, the injected amount of fuel is compared with a given amount and the process is stopped if the injected amount of fuel is the same as the given amount, whereby the process is proceeded if the injected amount is not the same as the given amount, whereby the lower tube (3) is moved in given steps nearer to the spring increasing the preload of the spring (11), whereby after each step, the actor (13, 5) of the valve is activated for a given time to lift the valve closing member (6) off the valve seat (8) against the preload of the spring (11), whereby after each injection the injected amount of fuel is checked, whereby the injected amount of fuel is compared with a given amount and the process is stopped and the nearer tube is fixed with the inlet tube (1), if the amount injected by the valve is the same as the predetermined amount. - Method according to claim 9, characterized in that the first or second tube (2, 3) are fixed to the inlet tube (1) by plastically deforming the inlet tube (1), narrowing the inner diameter of the inlet tube (1).
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20030008178 EP1467086B1 (en) | 2003-04-08 | 2003-04-08 | Injection valve with two adjusting tubes and method for adjusting a pretension of a spring on a closing member of an injection valve |
DE2003606333 DE60306333T2 (en) | 2003-04-08 | 2003-04-08 | Two-barrel fuel injection valve and method for adjusting the preload of a loading spring of a spring-loaded injector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20030008178 EP1467086B1 (en) | 2003-04-08 | 2003-04-08 | Injection valve with two adjusting tubes and method for adjusting a pretension of a spring on a closing member of an injection valve |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1467086A1 true EP1467086A1 (en) | 2004-10-13 |
EP1467086B1 EP1467086B1 (en) | 2006-06-21 |
Family
ID=32864970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20030008178 Expired - Lifetime EP1467086B1 (en) | 2003-04-08 | 2003-04-08 | Injection valve with two adjusting tubes and method for adjusting a pretension of a spring on a closing member of an injection valve |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1467086B1 (en) |
DE (1) | DE60306333T2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006017626A2 (en) * | 2004-08-05 | 2006-02-16 | Siemens Vdo Automotive Corporation | Fuel injector with a deep-drawn thin shell connector member and method of connecting components |
EP1918574A1 (en) * | 2006-11-02 | 2008-05-07 | Siemens Aktiengesellschaft | Injection valve and method for assembling the injection valve |
WO2009135710A1 (en) * | 2008-05-06 | 2009-11-12 | Robert Bosch Gmbh | Spring retaining sleeve |
WO2011110387A1 (en) * | 2010-03-08 | 2011-09-15 | Robert Bosch Gmbh | Fuel injector |
EP2607680A1 (en) * | 2011-12-20 | 2013-06-26 | Continental Automotive GmbH | Method for manufacturing an injection valve |
WO2013113881A1 (en) * | 2012-02-03 | 2013-08-08 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Dosing valve for additives at risk of freezing |
WO2014121966A1 (en) * | 2013-02-08 | 2014-08-14 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Metering valve for additives at risk of freezing |
EP2826986A1 (en) * | 2013-07-16 | 2015-01-21 | Robert Bosch Gmbh | Valve for controlling fluids and method for adjusting a pre-tensioning force of a resetting element of the valve |
DE102010012651B4 (en) | 2010-03-25 | 2023-02-09 | Cummins Ltd. | exhaust aftertreatment device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015212387A1 (en) * | 2015-07-02 | 2017-01-05 | Robert Bosch Gmbh | Electromagnetically actuated suction valve for a high-pressure pump and method for producing such a suction valve |
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---|---|---|---|---|
FR2276472A1 (en) * | 1974-06-29 | 1976-01-23 | Lucas Electrical Co Ltd | I.C. engine fuel injection nozzle - has solenoid valve spring tension adjusted by tube split in lengthwise direction |
US5937887A (en) * | 1995-06-06 | 1999-08-17 | Sagem Inc. | Method of assembling electromagnetically actuated disc-type valve |
US5967419A (en) | 1997-01-08 | 1999-10-19 | Aisan Kogyo Kabushiki Kaisha | Injector improved in noise reduction |
US6260404B1 (en) * | 1998-01-20 | 2001-07-17 | Mitsubishi Denki Kabushiki Kaisha | Method for manufacturing a cylinder interior fuel injection valve and apparatus for adjusting a fuel injection amount used therefor |
US20020030125A1 (en) * | 2000-03-31 | 2002-03-14 | Siemens Automotive Corporation | Double concentric inlet tube for setting armature/needle lift and method of manufacturing same |
-
2003
- 2003-04-08 EP EP20030008178 patent/EP1467086B1/en not_active Expired - Lifetime
- 2003-04-08 DE DE2003606333 patent/DE60306333T2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2276472A1 (en) * | 1974-06-29 | 1976-01-23 | Lucas Electrical Co Ltd | I.C. engine fuel injection nozzle - has solenoid valve spring tension adjusted by tube split in lengthwise direction |
US5937887A (en) * | 1995-06-06 | 1999-08-17 | Sagem Inc. | Method of assembling electromagnetically actuated disc-type valve |
US5967419A (en) | 1997-01-08 | 1999-10-19 | Aisan Kogyo Kabushiki Kaisha | Injector improved in noise reduction |
US6260404B1 (en) * | 1998-01-20 | 2001-07-17 | Mitsubishi Denki Kabushiki Kaisha | Method for manufacturing a cylinder interior fuel injection valve and apparatus for adjusting a fuel injection amount used therefor |
US20020030125A1 (en) * | 2000-03-31 | 2002-03-14 | Siemens Automotive Corporation | Double concentric inlet tube for setting armature/needle lift and method of manufacturing same |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006017626A2 (en) * | 2004-08-05 | 2006-02-16 | Siemens Vdo Automotive Corporation | Fuel injector with a deep-drawn thin shell connector member and method of connecting components |
WO2006017626A3 (en) * | 2004-08-05 | 2006-04-27 | Siemens Vdo Automotive Corp | Fuel injector with a deep-drawn thin shell connector member and method of connecting components |
US7552880B2 (en) | 2004-08-05 | 2009-06-30 | Continental Automotive Systems Us, Inc. | Fuel injector with a deep-drawn thin shell connector member and method of connecting components |
EP1918574A1 (en) * | 2006-11-02 | 2008-05-07 | Siemens Aktiengesellschaft | Injection valve and method for assembling the injection valve |
WO2009135710A1 (en) * | 2008-05-06 | 2009-11-12 | Robert Bosch Gmbh | Spring retaining sleeve |
US8757198B2 (en) | 2008-05-06 | 2014-06-24 | Robert Bosch Gmbh | Spring retaining sleeve |
WO2011110387A1 (en) * | 2010-03-08 | 2011-09-15 | Robert Bosch Gmbh | Fuel injector |
DE102010012651B4 (en) | 2010-03-25 | 2023-02-09 | Cummins Ltd. | exhaust aftertreatment device |
EP2607680A1 (en) * | 2011-12-20 | 2013-06-26 | Continental Automotive GmbH | Method for manufacturing an injection valve |
CN104093947A (en) * | 2012-02-03 | 2014-10-08 | 排放技术有限公司 | Dosing valve for additives at risk of freezing |
US20140338630A1 (en) * | 2012-02-03 | 2014-11-20 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Dosing valve for additives at risk of freezing, method for producing a dosing valve and motor vehicle |
US9982583B2 (en) * | 2012-02-03 | 2018-05-29 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Dosing valve for additives at risk of freezing, method for producing a dosing valve and motor vehicle |
WO2013113881A1 (en) * | 2012-02-03 | 2013-08-08 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Dosing valve for additives at risk of freezing |
WO2014121966A1 (en) * | 2013-02-08 | 2014-08-14 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Metering valve for additives at risk of freezing |
CN104968910A (en) * | 2013-02-08 | 2015-10-07 | 大陆汽车有限责任公司 | Metering valve for additives at risk of freezing |
JP2016507028A (en) * | 2013-02-08 | 2016-03-07 | コンチネンタル オートモーティヴ ゲゼルシャフト ミット ベシュレンクテル ハフツングContinental Automotive GmbH | Metering valve for additives that may freeze |
US9739189B2 (en) | 2013-02-08 | 2017-08-22 | Continental Automotive Gmbh | Metering valve for additives at risk of freezing |
RU2659847C2 (en) * | 2013-02-08 | 2018-07-04 | Континенталь Аутомотиве Гмбх | Metering valve for additives at risk of freezing |
CN104968910B (en) * | 2013-02-08 | 2018-10-23 | 大陆汽车有限责任公司 | For there is the metering valve for freezing dangerous additive |
EP2826986A1 (en) * | 2013-07-16 | 2015-01-21 | Robert Bosch Gmbh | Valve for controlling fluids and method for adjusting a pre-tensioning force of a resetting element of the valve |
Also Published As
Publication number | Publication date |
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DE60306333T2 (en) | 2007-05-31 |
EP1467086B1 (en) | 2006-06-21 |
DE60306333D1 (en) | 2006-08-03 |
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