EP3218094B1 - An injection valve having control chamber - Google Patents

An injection valve having control chamber Download PDF

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Publication number
EP3218094B1
EP3218094B1 EP15790996.1A EP15790996A EP3218094B1 EP 3218094 B1 EP3218094 B1 EP 3218094B1 EP 15790996 A EP15790996 A EP 15790996A EP 3218094 B1 EP3218094 B1 EP 3218094B1
Authority
EP
European Patent Office
Prior art keywords
control chamber
inlet
axis
injection valve
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.)
Active
Application number
EP15790996.1A
Other languages
German (de)
French (fr)
Other versions
EP3218094A1 (en
Inventor
Nuray KAYAKOL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Publication date
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Publication of EP3218094A1 publication Critical patent/EP3218094A1/en
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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
    • 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
    • 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
    • F02M55/008—Arrangement of fuel passages inside of injectors
    • 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
    • F02M2200/28—Details of throttles in fuel-injection apparatus

Definitions

  • the present invention relates to an injection valve in order to be used in internal combustion engines.
  • the spraying of the fuel into the combustion chamber is realized by means of injection valves.
  • the fuel entering into the injection valve through an inlet channel, is transferred towards the valve region through a control chamber. Afterwards, in the valve region, the fuel is transferred to the combustion chamber in a controlled manner by the valve member.
  • DE 10 2008 042 293 A1 discloses an injection valve with one inlet channel that supplies fuel into the control chamber, the inlet channel being orthogonal to the chamber center axis.
  • WO 2008/125934 A1 discloses an injection valve in which fuel enters the control chamber through a plurality of inlet channels.
  • the present invention relates to an injection valve, for eliminating the above mentioned disadvantages and for bringing new advantages to the related technical field.
  • the main object of the present invention is to provide an injection valve where the fuel advances by rotating inside the control chamber.
  • the present invention is an injection valve for use in internal combustion engines according to Claim 1, having at least one control chamber, at least one center axis extending at the center of said control chamber in the direction of its height, and at least one inlet channel in order to provide fuel entry into the control chamber.
  • the inlet axis of the inlet channel defined in the extension direction of the inlet channel is positioned in a manner not intersecting the center axis.
  • a plurality of inlet channels is provided around the center axis such that equal distance is provided in between.
  • the inlet channels are positioned at different heights.
  • the injection valve comprises a control chamber (10), and at least one inlet channel (20) providing fuel entry to said control chamber (10).
  • Said control chamber (10) preferably has a circular form.
  • a center axis (a) is defined at the center of the control chamber (10).
  • the center axis (a) is extending in the direction of the height of the control chamber (10).
  • X axis (x) and y axis (y) are defined which separate the control chamber into four regions in an orthogonal manner with respect to the center axis (a).
  • the inlet axis (b) preferably extends in a parallel manner with respect to the x axis (x) or y axis (y).
  • the inlet axis (b) extends in a parallel manner with respect to the x axis (x) or y axis (y) such that a distance remains in between, and the inlet axis (b) extends in an orthogonal manner with respect to the other axis.
  • the inlet axis (b) does not intersect the center axis (a).
  • Two or more inlet channels (20) are provided. Accordingly, in case there are two inlet channels (20), it is preferred that there is an angle of 180 degrees between the two inlet channels (20) as can be seen in Figure 3a . In alternative embodiments, the number of inlet channels (20) can be further increased as can be seen in Figure 3b . And accordingly, the inlet channels (20) are arranged such that they are preferably at equal distances with respect to each other.
  • the inlet channels (20) can be provided at different heights.
  • the fuel, coming from the inlet channel (20) hits the inner wall of the control chamber (10) at an angle which is smaller than 90 degrees.
  • the fuel enters into the control chamber (10) in a manner close to the tangent of the inner wall.
  • pluralities of inlet channels (20) are provided, vortex formation inside the control chamber (10) is facilitated.
  • the fuel, entering into the control chamber (10), obstructs the rotation of the fuel existing inside the control chamber (10); however, in the subject matter injection valve, the fuel, entering into the control chamber (10), facilitates the rotation of the fuel existing inside the control chamber (10).
  • the inlet channels (20) are provided at different heights as mentioned, the intersections of the fuel during entry of the fuel through the inlet channels (20) are prevented.

Landscapes

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

Description

    TECHNICAL FIELD
  • The present invention relates to an injection valve in order to be used in internal combustion engines.
    • PRIOR ART
  • In internal combustion engines, the spraying of the fuel into the combustion chamber is realized by means of injection valves. The fuel, entering into the injection valve through an inlet channel, is transferred towards the valve region through a control chamber. Afterwards, in the valve region, the fuel is transferred to the combustion chamber in a controlled manner by the valve member. DE 10 2008 042 293 A1 discloses an injection valve with one inlet channel that supplies fuel into the control chamber, the inlet channel being orthogonal to the chamber center axis. WO 2008/125934 A1 discloses an injection valve in which fuel enters the control chamber through a plurality of inlet channels.
  • In said examples, it is desired that the fuel moves in a vortex manner inside the control chamber, in other words, it is desired that the fuel moves by rotating around the center axis inside said control chamber.
  • As a result, because of all of the abovementioned problems, an improvement is required in the related technical field.
    • BRIEF DESCRIPTION OF THE INVENTION
  • The present invention relates to an injection valve, for eliminating the above mentioned disadvantages and for bringing new advantages to the related technical field.
  • The main object of the present invention is to provide an injection valve where the fuel advances by rotating inside the control chamber.
  • In order to realize all of the abovementioned objects and the objects which are to be deducted from the detailed description below, the present invention is an injection valve for use in internal combustion engines according to Claim 1, having at least one control chamber, at least one center axis extending at the center of said control chamber in the direction of its height, and at least one inlet channel in order to provide fuel entry into the control chamber.
  • The inlet axis of the inlet channel defined in the extension direction of the inlet channel is positioned in a manner not intersecting the center axis.
  • A plurality of inlet channels is provided around the center axis such that equal distance is provided in between.
  • In another preferred embodiment of the subject matter invention, the inlet channels are positioned at different heights.
    • BRIEF DESCRIPTION OF THE FIGURES
    • In Figure 1, a representative detailed view of the injection valve is given.
    • In Figure 2a and 2b, the isometric and top views of the control chamber of the injection valve are given.
    • In Figure 3a and 3b, the top views of the control chamber of the subject matter injection valve are given.
    REFERENCE NUMBERS
    • 10 Control chamber
    • 20 Inlet channel
    • a: Center axis
    • b: Inlet axis
    • X: x axis
    • Y: y axis
    THE DETAILED DESCRIPTION OF THE INVENTION
  • In this detailed description, the subject matter injection valve is explained with references to examples without forming any restrictive effect in order to make the subject more understandable.
  • As can be seen in Figure 1, 2a and 2b, the injection valve comprises a control chamber (10), and at least one inlet channel (20) providing fuel entry to said control chamber (10). Said control chamber (10) preferably has a circular form. A center axis (a) is defined at the center of the control chamber (10). The center axis (a) is extending in the direction of the height of the control chamber (10). X axis (x) and y axis (y) are defined which separate the control chamber into four regions in an orthogonal manner with respect to the center axis (a). At the center of the inlet channel (b), there is an inlet axis (b) which defines the extension direction of the inlet channel (20). The inlet axis (b) preferably extends in a parallel manner with respect to the x axis (x) or y axis (y). Preferably, the inlet axis (b) extends in a parallel manner with respect to the x axis (x) or y axis (y) such that a distance remains in between, and the inlet axis (b) extends in an orthogonal manner with respect to the other axis. In other words, the inlet axis (b) does not intersect the center axis (a).
  • Two or more inlet channels (20) are provided. Accordingly, in case there are two inlet channels (20), it is preferred that there is an angle of 180 degrees between the two inlet channels (20) as can be seen in Figure 3a. In alternative embodiments, the number of inlet channels (20) can be further increased as can be seen in Figure 3b. And accordingly, the inlet channels (20) are arranged such that they are preferably at equal distances with respect to each other.
  • In another alternative embodiment of the present invention, the inlet channels (20) can be provided at different heights.
  • In the prior art, since the inlet channel (20) is provided in the center axis (a) direction, the fuel, coming through the inlet channel (20), hits the control chamber (10) inner wall in an orthogonal manner. However, in the subject matter injection valve, the fuel, coming from the inlet channel (20), hits the inner wall of the control chamber (10) at an angle which is smaller than 90 degrees. In other words, the fuel enters into the control chamber (10) in a manner close to the tangent of the inner wall. Thus, the starting of the rotation movement of the fuel around the center axis (a) is facilitated. Since pluralities of inlet channels (20) are provided, vortex formation inside the control chamber (10) is facilitated. In the prior art, the fuel, entering into the control chamber (10), obstructs the rotation of the fuel existing inside the control chamber (10); however, in the subject matter injection valve, the fuel, entering into the control chamber (10), facilitates the rotation of the fuel existing inside the control chamber (10). Moreover, in the alternative embodiment, since the inlet channels (20) are provided at different heights as mentioned, the intersections of the fuel during entry of the fuel through the inlet channels (20) are prevented.
  • The protection scope of the present invention is set forth in the annexed Claims and cannot be restricted to the illustrative disclosures given above, under the detailed description. It is because a person skilled in the relevant art can obviously produce similar embodiments under the light of the foregoing disclosures, according to Claim 1.

Claims (2)

  1. An injection valve for use in internal combustion engines and having at least one control chamber (10), at least one center axis (a) extending at the center of said control chamber (10) in the direction of its height, and at least one inlet channel (20) in order to provide fuel entry into the control chamber (10), whereby the inlet axis (b) of the inlet channel (20) defined in the extension direction of the inlet channel (20) is positioned in a manner not intersecting the center axis (a), the inlet axis (b) extending in an orthogonal manner with respect to the center axis (a), characterized in that a plurality of inlet channels (20) is provided around the center axis (a) such that an equal distance is provided in between.
  2. An injection valve according to claim 1, characterized in that the inlet channels (20) are positioned at different heights.
EP15790996.1A 2014-11-11 2015-11-09 An injection valve having control chamber Active EP3218094B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201413269 2014-11-11
PCT/EP2015/076091 WO2016075089A1 (en) 2014-11-11 2015-11-09 An injection valve having control chamber

Publications (2)

Publication Number Publication Date
EP3218094A1 EP3218094A1 (en) 2017-09-20
EP3218094B1 true EP3218094B1 (en) 2020-01-08

Family

ID=54476997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15790996.1A Active EP3218094B1 (en) 2014-11-11 2015-11-09 An injection valve having control chamber

Country Status (2)

Country Link
EP (1) EP3218094B1 (en)
WO (1) WO2016075089A1 (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2261726C2 (en) * 1972-12-16 1985-10-10 Klöckner-Humboldt-Deutz AG, 5000 Köln Fuel injection valve for internal combustion engines
US5979415A (en) * 1997-11-12 1999-11-09 Caterpillar Inc. Fuel injection pump with a hydraulically-spill valve
DE19859592C1 (en) * 1998-12-22 2000-05-04 Bosch Gmbh Robert Fuel injection valve for high pressure injection of fuel into the combustion chambers of internal combustion engines
US7178975B2 (en) * 2004-04-23 2007-02-20 Five Star Technologies, Inc. Device and method for creating vortex cavitation in fluids
JP2008002306A (en) * 2006-06-21 2008-01-10 Denso Corp Fuel injection valve
JP4245639B2 (en) * 2007-04-13 2009-03-25 トヨタ自動車株式会社 Fuel injection valve for internal combustion engine
DE102008042293A1 (en) * 2008-09-23 2010-03-25 Robert Bosch Gmbh Injector for injecting high-pressure fuel into the combustion chamber of an internal combustion engine
US20100096473A1 (en) * 2008-10-20 2010-04-22 Caterpillar Inc. Variable flow rate valve for mechnically actuated fuel injector
DE102010002642A1 (en) * 2010-03-08 2011-09-08 Robert Bosch Gmbh Injector i.e. fuel injector, for common rail fuel injection system of self-ignition engine, has valve seat and closure connected with chamber and throttle connected upstream of deflecting unit, where rotational flow is stamped to fluid flow
CH705094B1 (en) * 2011-06-10 2015-02-27 Vortexpower Ag Whirling device.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2016075089A1 (en) 2016-05-19
EP3218094A1 (en) 2017-09-20

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