EP2426351A1 - Adjusting fuel filter assembly and injection valve - Google Patents

Adjusting fuel filter assembly and injection valve Download PDF

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Publication number
EP2426351A1
EP2426351A1 EP10175059A EP10175059A EP2426351A1 EP 2426351 A1 EP2426351 A1 EP 2426351A1 EP 10175059 A EP10175059 A EP 10175059A EP 10175059 A EP10175059 A EP 10175059A EP 2426351 A1 EP2426351 A1 EP 2426351A1
Authority
EP
European Patent Office
Prior art keywords
adjusting
filter assembly
injection valve
inlet tube
fuel filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP10175059A
Other languages
German (de)
French (fr)
Other versions
EP2426351B1 (en
Inventor
Romeo Ileana
Matteo Soriani
Francesco Lenzi
Mauro Grandi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
Original Assignee
Continental Automotive GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive GmbH filed Critical Continental Automotive GmbH
Priority to EP20100175059 priority Critical patent/EP2426351B1/en
Publication of EP2426351A1 publication Critical patent/EP2426351A1/en
Application granted granted Critical
Publication of EP2426351B1 publication Critical patent/EP2426351B1/en
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Anticipated expiration legal-status Critical

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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
    • F02M61/165—Filtering elements specially adapted in fuel inlets to injector
    • 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
    • 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
    • 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

  • the invention relates to an adjusting fuel filter assembly for an injection valve and an injection valve.
  • Injection valves are in widespread use, in particular for an internal combustion engine where they may be arranged in order to dose the fluid into an intake manifold of the internal combustion engine or directly into the combustion chamber of a cylinder of the internal combustion engine.
  • injection valves are manufactured in various forms in order to satisfy the various needs for the various combustion engines. Therefore, for example, their length, their diameter, and all the various elements of the injection valve being responsible for the way the fluid is dosed may vary in a wide range.
  • injection valves can accommodate an actuator for actuating a needle of the injection valve, which may be, for example, an electromagnetic actuator or a piezoelectric actuator.
  • the respective injection valve may be suited to dose fluids under high pressures.
  • the pressures may be in case of a gasoline engine, for example, in the range of up to 200 bar, and in case of a diesel engine, in the range of 2000 bar, and above.
  • an injection valve normally comprises a fuel filter for filtering the fluid, and it also comprises an adjusting member for adjusting the maximal calibration spring load of the injection valve. Filtering the fuel is necessary for keeping possible impurities of the fuel off from the needle and off from the injection nozzle.
  • a so-called adjusting fuel filter assembly comprising three parts: a frame, a bush, and a screen. Such an adjusting fuel filter assembly cooperates with a spring, which preloads the valve needle.
  • creating such an adjusting fuel filter assembly is rather complicated, and therefore expensive.
  • the object of the invention is to create an adjusting fuel filter assembly for an injection valve and an injection valve which is simple to be manufactured and which facilitates a reliable and precise function.
  • An injection valve 2, as shown in Fig. 1 that is in particular suitable for dosing fuel to an internal combustion engine, generally comprises, among others, a fuel inlet tube 15, an actuator unit 6, and a valve assembly 4 including a valve needle 13.
  • the valve needle 13 is arranged along a central longitudinal axis L of the injection valve 2 and it can be moved within the valve assembly 4 along said central longitudinal axis L.
  • the injection valve 2 of Fig. 1 additionally comprises a traditional adjusting fuel filter assembly 42, arranged within the fuel inlet tube 15. Its purpose is, on the one hand, to filter incoming fuel, and, on the other hand, to cooperate with a main spring 22, also being arranged within the fuel inlet tube 15.
  • the main spring 22 is arranged between the adjusting fuel filter assembly 42 and the valve needle 13, and it is mechanically coupled to the valve needle 13 and to the adjusting fuel filter assembly 42 to exert a force onto the valve needle 13 in the direction of said central longitudinal axis L. In this way an adjusting fuel filter arrangement can be established.
  • the traditional adjusting fuel filter assembly 42 consists of a frame 42a, an external bush 42c, which may be made of stainless steel, and of a screen 42b for filtering the fuel.
  • the screen 42b is made of nylon and it may be adapted to filter contamination out from the fuel having a size of more than 30 ⁇ m in diameter.
  • the screen 42b is fixed to the frame 42a.
  • the adjusting fuel filter assembly 42 When manufacturing the injection valve 2, within a calibration procedure the adjusting fuel filter assembly 42 is axially moved along said central longitudinal axis L in order to exert a force onto the valve needle 13 in the direction of said central longitudinal axis L. This is to preload the main spring 22 with a desired amount of spring force. Thus the maximum amount of needle lift of the valve needle 13 can be precisely calibrated, which is essential for minimizing occurrence of waste gas as much as possible.
  • This calibration procedure is done by coupling the external bush 42c of the adjusting fuel filter assembly 42 to an inner surface of the fuel inlet tube 15 by interference at a desired, given position of said inner surface.
  • Fig. 3 shows a first embodiment of an injection valve 2 according to the present invention, comprising the adjusting fuel filter assembly 42 also according to the present invention.
  • This new and inventive adjusting fuel filter assembly 42 consists of an external bush 42c and an internal filter material 42d.
  • the external bush 42c is made of a stainless material, especially of stainless steel.
  • the internal metallic filter material 42d is also of a stainless material. It is advantageous to have it made of sintered material like ceramic powder, plastic powder, steel powder or of wire mesh, and with a porosity, which allows filtering fuel impurities in the range of 2 ⁇ m and larger (for instance 60 ⁇ m).
  • Fig. 4 shows the external bush 42c in a perspective view (the internal filter material 42d cannot be seen in this view) and Fig. 4a shows the external bush 42c in a longitudinal section.
  • the external bush 42c comprises a longitudinal axis L' and a circumferential step 42e.
  • the circumferential step 42e is arranged orthogonal to said longitudinal axis L'. It segments the external bush 42c into an upper section 42c' and into a lower section 4c", whereby an outer diameter of the upper section 42c' is greater than an outer diameter of the lower section 4c".
  • the internal filter material 42d is shown in Fig. 5 . It is arranged within in the lower section 4c" of the external bush 42c.
  • the adjusting fuel filter assembly 42 is arranged within the fuel inlet tube 15, whereby at least a part of the upper section 42c' of the external bush 42c is directly engaged with an inner surface of the fuel inlet tube 15, for instance by interference.
  • Fig. 6 shows another embodiment of the injection valve according to the invention. This embodiment differs from the embodiment of Fig. 3 only insofar, as there is fixed an adjusting tube 40 within the fuel inlet tube 15, and the adjusting fuel filter assembly 42 is engaged within this adjusting tube 40, so that an outer surface of the adjusting tube 40 is engaged with the inner surface of the fuel inlet tube 15, and an inner surface of the adjusting tube 40 is directly engaged with at least a part of the outer surface of the upper section 42c' of the external bush 42c of the adjusting fuel filter assembly 42.
  • both, the fuel inlet tube 15 and the adjusting tube 40 made of one piece by providing the fuel inlet tube 15 with a step, whereby that part of the fuel inlet tube 15, which is arranged below the step, has a smaller diameter than that part of the fuel inlet tube 15, which is arranged above the step, and whereby that part of the fuel inlet tube 15, which is arranged below the step, acts as the adjusting tube 40.
  • the subject matters of the invention have the advantages, beyond the advantages already described, that they are better protected against aggressive fuel, that they show a simplified shape, and that they are of reduced dimensions, compared with the respective subject matters of the prior art, in each case.
  • a further advantage of the adjusting fuel filter assembly 42 is that the internal filter material 42d also has dampening properties. Pressure pulsations and drops of pressure, occurring with the fuel pressure, when the fuel is passing through the filter material 42d, is reduced and minimized significantly by using said internal filter material 42d.

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  • 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)

Abstract

An adjusting fuel filter assembly for an injection valve comprises an external bush (42c) including a central longitudinal axis (L') and a circumferential step (42e) being arranged orthogonal to said axis (L'), said circumferential step (42e) segmenting the external bush (42c) into an upper section (42c') and into a lower section (42c"), whereby an outer diameter of the upper section (42c') is greater than an outer diameter of the lower section (42c"), and an internal filter material (42d), arranged within at least a part of said lower section (42c") and being of sintered material. The injection valve comprises a central longitudinal axis (L), a fuel inlet tube (15) with an inner surface, an actuator unit (6), and a valve assembly (4) including a valve needle (13). The injection valve further comprises said adjusting fuel filter assembly (42), whereby at least a part of the upper section (42c') of the external bush (42c) is either directly or indirectly engaged with said inner surface of the fuel inlet tube (15).

Description

  • The invention relates to an adjusting fuel filter assembly for an injection valve and an injection valve.
  • Injection valves are in widespread use, in particular for an internal combustion engine where they may be arranged in order to dose the fluid into an intake manifold of the internal combustion engine or directly into the combustion chamber of a cylinder of the internal combustion engine.
  • Injection valves are manufactured in various forms in order to satisfy the various needs for the various combustion engines. Therefore, for example, their length, their diameter, and all the various elements of the injection valve being responsible for the way the fluid is dosed may vary in a wide range. In addition to that, injection valves can accommodate an actuator for actuating a needle of the injection valve, which may be, for example, an electromagnetic actuator or a piezoelectric actuator.
  • In order to enhance the combustion process in view of degradation of unwanted emissions, the respective injection valve may be suited to dose fluids under high pressures. The pressures may be in case of a gasoline engine, for example, in the range of up to 200 bar, and in case of a diesel engine, in the range of 2000 bar, and above.
  • In addition, in order to enhance the combustion process, an injection valve normally comprises a fuel filter for filtering the fluid, and it also comprises an adjusting member for adjusting the maximal calibration spring load of the injection valve. Filtering the fuel is necessary for keeping possible impurities of the fuel off from the needle and off from the injection nozzle. For these purposes it is known to provide a so-called adjusting fuel filter assembly comprising three parts: a frame, a bush, and a screen. Such an adjusting fuel filter assembly cooperates with a spring, which preloads the valve needle. However, creating such an adjusting fuel filter assembly is rather complicated, and therefore expensive.
  • The object of the invention is to create an adjusting fuel filter assembly for an injection valve and an injection valve which is simple to be manufactured and which facilitates a reliable and precise function.
  • This object is achieved by the features of the independent claims. Advantageous embodiments of the invention are given in the sub-claims.
  • Exemplary embodiments of the invention are explained in the following with the aid of schematic drawings. These are as follows:
    • Figure 1,
    a traditional injection valve with a traditional adjusting fuel filter assembly, in a longitudinal section view,
    Figure 2,
    an enlarged and detailed view of the traditional adjusting fuel filter assembly of the traditional injection valve in a perspective view,
    Figure 3,
    an embodiment of an injection valve including an adjusting fuel filter assembly, both of the invention,
    Figure 4,
    an enlarged and detailed view of an embodiment of the adjusting fuel filter assembly according to the invention, in a perspective view,
    Figure 4a,
    the external bush of the embodiment of Fig. 4 in a cross sectional view,
    Figure 5,
    an embodiment of the internal filter material of the adjusting fuel filter assembly according to the invention, and
    Figure 6,
    another embodiment of an injection valve including the adjusting fuel filter assembly, both of the invention,
  • Elements of the same design and function that appear in different illustrations are identified by the same reference characters.
  • An injection valve 2, as shown in Fig. 1, that is in particular suitable for dosing fuel to an internal combustion engine, generally comprises, among others, a fuel inlet tube 15, an actuator unit 6, and a valve assembly 4 including a valve needle 13. The valve needle 13 is arranged along a central longitudinal axis L of the injection valve 2 and it can be moved within the valve assembly 4 along said central longitudinal axis L.
  • The injection valve 2 of Fig. 1 additionally comprises a traditional adjusting fuel filter assembly 42, arranged within the fuel inlet tube 15. Its purpose is, on the one hand, to filter incoming fuel, and, on the other hand, to cooperate with a main spring 22, also being arranged within the fuel inlet tube 15. The main spring 22 is arranged between the adjusting fuel filter assembly 42 and the valve needle 13, and it is mechanically coupled to the valve needle 13 and to the adjusting fuel filter assembly 42 to exert a force onto the valve needle 13 in the direction of said central longitudinal axis L. In this way an adjusting fuel filter arrangement can be established.
  • As can be seen from Fig. 2, the traditional adjusting fuel filter assembly 42 consists of a frame 42a, an external bush 42c, which may be made of stainless steel, and of a screen 42b for filtering the fuel. The screen 42b is made of nylon and it may be adapted to filter contamination out from the fuel having a size of more than 30 µm in diameter. The screen 42b is fixed to the frame 42a.
  • When manufacturing the injection valve 2, within a calibration procedure the adjusting fuel filter assembly 42 is axially moved along said central longitudinal axis L in order to exert a force onto the valve needle 13 in the direction of said central longitudinal axis L. This is to preload the main spring 22 with a desired amount of spring force. Thus the maximum amount of needle lift of the valve needle 13 can be precisely calibrated, which is essential for minimizing occurrence of waste gas as much as possible. This calibration procedure is done by coupling the external bush 42c of the adjusting fuel filter assembly 42 to an inner surface of the fuel inlet tube 15 by interference at a desired, given position of said inner surface.
  • Fig. 3 shows a first embodiment of an injection valve 2 according to the present invention, comprising the adjusting fuel filter assembly 42 also according to the present invention. This new and inventive adjusting fuel filter assembly 42 consists of an external bush 42c and an internal filter material 42d. The external bush 42c is made of a stainless material, especially of stainless steel. The internal metallic filter material 42d is also of a stainless material. It is advantageous to have it made of sintered material like ceramic powder, plastic powder, steel powder or of wire mesh, and with a porosity, which allows filtering fuel impurities in the range of 2 µm and larger (for instance 60 µm).
  • In Figs. 4, 4a and 5 this adjusting fuel filter assembly 42 is shown in more details: Fig. 4 shows the external bush 42c in a perspective view (the internal filter material 42d cannot be seen in this view) and Fig. 4a shows the external bush 42c in a longitudinal section. The external bush 42c comprises a longitudinal axis L' and a circumferential step 42e. The circumferential step 42e is arranged orthogonal to said longitudinal axis L'. It segments the external bush 42c into an upper section 42c' and into a lower section 4c", whereby an outer diameter of the upper section 42c' is greater than an outer diameter of the lower section 4c". The internal filter material 42d is shown in Fig. 5. It is arranged within in the lower section 4c" of the external bush 42c.
  • In the embodiment of Fig. 3 the adjusting fuel filter assembly 42 is arranged within the fuel inlet tube 15, whereby at least a part of the upper section 42c' of the external bush 42c is directly engaged with an inner surface of the fuel inlet tube 15, for instance by interference.
  • Fig. 6 shows another embodiment of the injection valve according to the invention. This embodiment differs from the embodiment of Fig. 3 only insofar, as there is fixed an adjusting tube 40 within the fuel inlet tube 15, and the adjusting fuel filter assembly 42 is engaged within this adjusting tube 40, so that an outer surface of the adjusting tube 40 is engaged with the inner surface of the fuel inlet tube 15, and an inner surface of the adjusting tube 40 is directly engaged with at least a part of the outer surface of the upper section 42c' of the external bush 42c of the adjusting fuel filter assembly 42.
  • It is also possible (not shown in the drawing) to have made both, the fuel inlet tube 15 and the adjusting tube 40, made of one piece by providing the fuel inlet tube 15 with a step, whereby that part of the fuel inlet tube 15, which is arranged below the step, has a smaller diameter than that part of the fuel inlet tube 15, which is arranged above the step, and whereby that part of the fuel inlet tube 15, which is arranged below the step, acts as the adjusting tube 40.
  • The subject matters of the invention have the advantages, beyond the advantages already described, that they are better protected against aggressive fuel, that they show a simplified shape, and that they are of reduced dimensions, compared with the respective subject matters of the prior art, in each case.
  • A further advantage of the adjusting fuel filter assembly 42 is that the internal filter material 42d also has dampening properties. Pressure pulsations and drops of pressure, occurring with the fuel pressure, when the fuel is passing through the filter material 42d, is reduced and minimized significantly by using said internal filter material 42d.

Claims (8)

  1. Adjusting fuel filter assembly for an injection valve, comprising:
    - an external bush (42c) including a central longitudinal axis (L') and a circumferential step (42e) being arranged orthogonal to said axis (L'), said circumferential step (42e) segmenting the external bush (42c) into an upper section (42c') and into a lower section (42c"), whereby an outer diameter of the upper section (42c') is greater than an outer diameter of the lower section (42c"), and
    - an internal filter material (42d), arranged within at least a part of said lower section (42c") and being of a stainless material.
  2. Adjusting fuel filter assembly according to claim 1, characterized in that the external bush (42c) is made of stainless steel.
  3. Adjusting fuel filter assembly according to claim 1 or 2, characterized in that the internal filter material (42d) is sintered material, in particular made from stainless steel powder, plastic powder or ceramic powder.
  4. Adjusting fuel filter assembly according to claim 1 or 2, characterized in that the internal filter material (42d) is wire mesh.
  5. Injection valve comprising
    - a central longitudinal axis (L),
    - a fuel inlet tube (15) with an inner surface,
    - an actuator unit (6), and
    - a valve assembly (4) including a valve needle (13), characterized by an adjusting fuel filter assembly (42) according to one of the preceding claims,
    - whereby at least a part of the upper section (42c') of the external bush (42c) is either directly or indirectly engaged with said inner surface of the fuel inlet tube (15).
  6. Injection valve according to claim 5, characterized in that the engagement of the external bush (42c) with the inner surface of the fuel inlet tube (15) is given by an adjusting tube (40) arranged within the fluid inlet tube (15) and which comprises the adjusting fuel filter assembly (42), whereby the inner surface of the fluid inlet tube (15) is directly engaged with an outer surface of the adjusting tube (40), and whereby an inner surface of the adjusting tube (40) is directly engaged with said part of the upper section (42c') of the external bush (42c).
  7. Injection valve according to claim 5, characterized in that the fuel inlet tube (15) is provided with a step, whereby the engagement of the external bush (42c) with the inner surface of the fuel inlet tube (15) takes place below the step, seen in a direction towards the needle (13), so that that part of the fuel inlet tube (15), which is arranged below said step, acts as an adjusting tube (40).
  8. Injection valve according to any of claims 5 to 7, characterized in that the engagement of the external bush (42c) is made by interference.
EP20100175059 2010-09-02 2010-09-02 Adjusting fuel filter assembly and injection valve Active EP2426351B1 (en)

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EP2426351A1 true EP2426351A1 (en) 2012-03-07
EP2426351B1 EP2426351B1 (en) 2014-11-12

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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2884091A1 (en) 2013-12-13 2015-06-17 Robert Bosch GmbH Fuel injector valve
DE102013225820A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102013225829A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102013225812A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102013225817A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102013225834A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102014226003A1 (en) 2014-12-16 2016-06-16 Robert Bosch Gmbh Fuel injector
DE102014225994A1 (en) 2014-12-16 2016-06-16 Robert Bosch Gmbh Fuel injector
DE102014225999A1 (en) 2014-12-16 2016-06-16 Robert Bosch Gmbh Fuel injector
DE102015226533A1 (en) 2015-12-22 2017-06-22 Robert Bosch Gmbh Fuel injector
DE102015226541A1 (en) 2015-12-22 2017-06-22 Robert Bosch Gmbh Fuel injector
DE102015226515A1 (en) 2015-12-22 2017-06-22 Robert Bosch Gmbh Fuel injector
DE102015226528A1 (en) 2015-12-22 2017-06-22 Robert Bosch Gmbh Fuel injector
WO2017184858A1 (en) * 2016-04-22 2017-10-26 Caterpillar Inc. Fuel inlet filter for fuel injectors
DE102016226142A1 (en) 2016-12-23 2018-06-28 Robert Bosch Gmbh Fuel injector
DE102016226135A1 (en) 2016-12-23 2018-06-28 Robert Bosch Gmbh Fuel injector
DE102020214154A1 (en) 2020-11-11 2022-05-12 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215218A1 (en) 2020-12-02 2022-06-02 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215215A1 (en) 2020-12-02 2022-06-02 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215217A1 (en) 2020-12-02 2022-06-02 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215794A1 (en) 2020-12-14 2022-06-15 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215621A1 (en) 2020-12-10 2022-06-15 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102022210875A1 (en) 2022-10-14 2024-04-25 Robert Bosch Gesellschaft mit beschränkter Haftung Fuel injector

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WO2001057385A2 (en) * 2000-02-02 2001-08-09 Siemens Automotive Corporation Combined filter and adjuster for a fuel injector
EP1296057A1 (en) * 2001-09-19 2003-03-26 Filtertek, Inc. Integrated fuel filter and calibration tube for a fuel injector
EP1806497A1 (en) * 2006-01-10 2007-07-11 Siemens Aktiengesellschaft Injector
DE102007049963A1 (en) * 2007-10-18 2009-04-23 Robert Bosch Gmbh Fuel injector

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Publication number Priority date Publication date Assignee Title
WO2001057385A2 (en) * 2000-02-02 2001-08-09 Siemens Automotive Corporation Combined filter and adjuster for a fuel injector
EP1296057A1 (en) * 2001-09-19 2003-03-26 Filtertek, Inc. Integrated fuel filter and calibration tube for a fuel injector
EP1806497A1 (en) * 2006-01-10 2007-07-11 Siemens Aktiengesellschaft Injector
DE102007049963A1 (en) * 2007-10-18 2009-04-23 Robert Bosch Gmbh Fuel injector

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013225834A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
EP2884091A1 (en) 2013-12-13 2015-06-17 Robert Bosch GmbH Fuel injector valve
DE102013225829A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102013225812A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102013225817A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102013225840A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
DE102013225820A1 (en) 2013-12-13 2015-06-18 Robert Bosch Gmbh Fuel injector
EP2891788A1 (en) 2013-12-13 2015-07-08 Robert Bosch GmbH Fuel injection valve
US10753332B2 (en) 2013-12-13 2020-08-25 Robert Bosch Gmbh Fuel injector having a throttle element
DE102014225994A1 (en) 2014-12-16 2016-06-16 Robert Bosch Gmbh Fuel injector
DE102014226003A1 (en) 2014-12-16 2016-06-16 Robert Bosch Gmbh Fuel injector
EP3034856A1 (en) 2014-12-16 2016-06-22 Robert Bosch Gmbh Fuel injector valve
EP3034857A1 (en) 2014-12-16 2016-06-22 Robert Bosch Gmbh Fuel injector valve
DE102014225999A1 (en) 2014-12-16 2016-06-16 Robert Bosch Gmbh Fuel injector
DE102015226541A1 (en) 2015-12-22 2017-06-22 Robert Bosch Gmbh Fuel injector
DE102015226528A1 (en) 2015-12-22 2017-06-22 Robert Bosch Gmbh Fuel injector
DE102015226533A1 (en) 2015-12-22 2017-06-22 Robert Bosch Gmbh Fuel injector
DE102015226515A1 (en) 2015-12-22 2017-06-22 Robert Bosch Gmbh Fuel injector
GB2565483B (en) * 2016-04-22 2020-02-26 Caterpillar Inc Fuel inlet filter for fuel injectors
WO2017184858A1 (en) * 2016-04-22 2017-10-26 Caterpillar Inc. Fuel inlet filter for fuel injectors
US10060401B2 (en) 2016-04-22 2018-08-28 Caterpillar Inc. Fuel inlet filter for fuel injectors
GB2565483A (en) * 2016-04-22 2019-02-13 Caterpillar Inc Fuel inlet filter for fuel injectors
DE102016226135A1 (en) 2016-12-23 2018-06-28 Robert Bosch Gmbh Fuel injector
DE102016226142A1 (en) 2016-12-23 2018-06-28 Robert Bosch Gmbh Fuel injector
DE102020214154A1 (en) 2020-11-11 2022-05-12 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215218A1 (en) 2020-12-02 2022-06-02 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215215A1 (en) 2020-12-02 2022-06-02 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215217A1 (en) 2020-12-02 2022-06-02 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215621A1 (en) 2020-12-10 2022-06-15 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102020215794A1 (en) 2020-12-14 2022-06-15 Robert Bosch Gesellschaft mit beschränkter Haftung fuel injector
DE102022210875A1 (en) 2022-10-14 2024-04-25 Robert Bosch Gesellschaft mit beschränkter Haftung Fuel injector

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