WO1999001662A1 - Ventil zum steuern von flüssigkeiten - Google Patents
Ventil zum steuern von flüssigkeiten Download PDFInfo
- Publication number
- WO1999001662A1 WO1999001662A1 PCT/DE1998/000698 DE9800698W WO9901662A1 WO 1999001662 A1 WO1999001662 A1 WO 1999001662A1 DE 9800698 W DE9800698 W DE 9800698W WO 9901662 A1 WO9901662 A1 WO 9901662A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- valve
- ring
- actuator
- valve according
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- 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
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/03—Fuel-injection apparatus having means for reducing or avoiding stress, e.g. the stress caused by mechanical force, by fluid pressure or by temperature variations
-
- 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
- F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
- F02M2200/703—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger hydraulic
-
- 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
- F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
- F02M2547/003—Valve inserts containing control chamber and valve piston
Definitions
- the invention relates to a valve for controlling liquids in accordance with the preamble of claim 1.
- EP-A-0 477 400 discloses such a valve.
- the actuating piston of the valve member is arranged in a part of a stepped bore that is smaller in diameter, whereas a piston with a larger diameter that is moved with the piezo actuator is arranged in a part of the stepped bore that is larger in diameter.
- a hydraulic space is clamped between the two pistons, such that when the larger piston is moved by the actuator by a certain distance, the actuating piston of the valve member is moved by a distance increased by the ratio of the stepped bore diameter.
- the valve element, the actuating piston, the actuator piston, which is larger in diameter, and the piezo actuator lie one behind the other on a common axis.
- control valve according to the invention with the features of the characterizing part of claim 1 has the advantage over the fact that the leakage is reduced. Another advantage is the simplicity and the value of the solution. Finally, the diversity of
- Possible solutions to the proposal include the selection of the cheapest variants for the various applications.
- FIG. 1 shows a fuel injection valve in section
- FIG. 2 shows a piston working as a movable wall of a coupling space with an end face
- FIG. 3 a piston arrangement on a coupling space
- FIG. 4 a piston arrangement on another coupling space
- FIG. 5 a differently shaped front recess
- FIG. 6 a piston with a pressed-on ring
- FIG. 7 another ring space arrangement on a piston
- FIG. 8 one other ring shape.
- valve according to the invention is used in a
- Fuel injection valve which is shown in essential parts in section in Figure 1.
- This injection valve has a valve housing 1, in which a valve needle 3 is guided in a longitudinal bore 2.
- the valve needle At one end is the valve needle with a conical sealing surface 4 provided, which cooperates with a seat 6 on the tip 5 of the valve housing projecting into the combustion chamber, from which injection openings lead off, which connect into the interior of the injection valve, in this case the annular space 7, which is around the valve needle 3 and is under injection pressure and filled with fuel, with the combustion chamber to carry out an injection when the valve needle has lifted off its seat.
- the annular space is connected to a further pressure space 8, which is constantly in communication with a pressure line 10, through which the fuel injection valve from one
- High-pressure fuel accumulator 9 fuel is supplied under injection pressure. This high fuel pressure also acts in the pressure chamber 8 and there on a pressure shoulder 11, via which the nozzle needle can be lifted from its valve seat in a known manner under suitable conditions.
- valve needle At the other end of the valve needle, it is guided in a cylinder bore 12 and includes with its end face 14 a control pressure chamber 15 which is connected via a throttle connection 16 to an annular chamber 17 which, like the pressure chamber 8, is always connected to the high-pressure fuel reservoir communicates.
- a throttle bore 19 leads axially from the control pressure chamber 15 to a valve seat 20 of a control valve 21.
- a valve member 22 of the control valve 21 interacts with the valve seat 20 and, in the raised state, establishes a connection between the control pressure chamber 15 and a relief chamber.
- valve member 22 is acted upon by a compression spring 24 in the closing direction, ie towards the valve seat 20, so that this connection of the control pressure chamber 15 is closed in the normal position of the control valve. Since the face area of the valve needle in the area of the control pressure chamber is larger than the area of the pressure shoulder 11, the same fuel pressure holds in the control pressure chamber as in that Pressure chamber 8 prevails, now the valve needle in the closed position. However, if the valve member 22 is raised, the pressure in the control pressure chamber 15 is relieved due to the throttling effect of the throttle connection 16. When the closing force is now lacking, the valve needle opens quickly and, on the other hand, can be brought into the closed position as soon as the valve member 22 comes back into the closed position. From this point in time, the original high fuel pressure in the control pressure chamber 15 quickly builds up again via the throttle 16.
- the control valve according to the invention has a piston 25 intended for its actuation, which acts on the valve member 22.
- the piston 25 is guided tightly in a guide bore 28 and delimits one with its end face 29
- Coupling space 30 which is closed on its opposite wall by an actuator piston 31 of larger diameter, which is part of a piezo actuator 32. Both pistons 25 and 31 are tightly guided in their bores. Due to the different piston surfaces of the two pistons 25 and 31, the coupling chamber 30 serves as a pressure intensifier chamber, in which it translates a construction-related small stroke of the piezo actuator piston 31 into a larger stroke of the piston 25 actuating the control valve 21.
- the piston 25 and possibly also the actuator piston 31 are each provided on their end faces with a contact pressure intensifying device 35 in the form of a blind bore 33 or 34.
- FIG. 3 shows the coupling space 30 with the two pistons 25 and 31, both of which are provided with a blind bore 33 and 34, respectively.
- the two pistons 33 and 34 lie on the same axis 38.
- FIG. 4 shows that the axes of the two pistons can also be offset in parallel in order to save overall height.
- a coupling space bears the reference number 39 here.
- FIG. 5 shows that it is also possible to introduce a concave design 41 into the end face 29 of a piston 42 instead of a cylindrical blind bore 33 or 34 as a contact pressure intensifying device 40.
- Piston 43 is equipped on its piston head 44 with a pressed-on, preferably shrunk-on ring 45.
- This ring 45 has a front internal recess 46 which is hollow-cylindrical, so that a ring-cylindrical edge 47 is formed, which is in the manner of an annular sealing lip is relatively easy to expand.
- a contact pressure amplification device 48 is thus created here.
- a ring 49 the edge of which is formed by a recess 50 and lies on the inside.
- the recess 50 is on the outside, and pressure medium from a coupling space 53 reaches the recess 50 through a constructionally enlarged diameter of the coupling space 53. It can be seen that an increase in the contact pressure and thus a reduction in leakage can also be achieved in this way.
- FIG. 8 finally treats a ring 54 slotted like a piston ring, which is cylindrical on the outside and whose inner ring surface 55 has a cross section which increases from the coupling space 56 to the rear, that is to say is conical.
- the inner ring surface 55 thus represents a contact pressure intensifying device 57.
- contact pressure reinforcing device 35, 40, 48, 52 and 57 can be used with simple Means is inexpensive to manufacture and that it is easily adaptable to corresponding installation conditions due to its diverse design options.
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)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98921340A EP0923672B1 (de) | 1997-07-02 | 1998-03-10 | Ventil zum steuern von flüssigkeiten |
JP11506061A JP2001500214A (ja) | 1997-07-02 | 1998-03-10 | 液体を制御する弁 |
DE59807302T DE59807302D1 (de) | 1997-07-02 | 1998-03-10 | Ventil zum steuern von flüssigkeiten |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19728077.3 | 1997-07-02 | ||
DE19728077 | 1997-07-02 | ||
DE19756669.3 | 1997-12-19 | ||
DE19756669A DE19756669A1 (de) | 1997-07-02 | 1997-12-19 | Ventil zum Steuern von Flüssigkeiten |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999001662A1 true WO1999001662A1 (de) | 1999-01-14 |
Family
ID=26037929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1998/000698 WO1999001662A1 (de) | 1997-07-02 | 1998-03-10 | Ventil zum steuern von flüssigkeiten |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0923672B1 (de) |
JP (1) | JP2001500214A (de) |
CN (1) | CN1095035C (de) |
RU (1) | RU2200248C2 (de) |
WO (1) | WO1999001662A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007001363A1 (de) * | 2007-01-09 | 2008-07-10 | Robert Bosch Gmbh | Injektor zum Einspritzen von Kraftstoff in Brennräume von Brennkraftmaschinen |
JP6828443B2 (ja) * | 2017-01-10 | 2021-02-10 | 株式会社デンソー | 燃料噴射装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3728817A1 (de) * | 1986-09-05 | 1988-03-17 | Toyota Motor Co Ltd | Kraftstoff-einspritzpumpe fuer eine brennkraftmaschine |
EP0477400A1 (de) | 1990-09-25 | 1992-04-01 | Siemens Aktiengesellschaft | Anordnung für einen in Hubrichtung wirkenden adaptiven, mechanischen Toleranzausgleich für den Wegtransformator eines piezoelektrischen Aktors |
DE4306072A1 (de) * | 1993-02-26 | 1994-09-08 | Siemens Ag | Vorrichtung zum Öffnen und Verschließen einer in einem Gehäuse vorhandenen Durchtrittsöffnung |
DE19646847A1 (de) * | 1996-11-13 | 1997-06-12 | Heinz Schmidt | Anordnung eines modularen hydraulischen Stellwegtransformators mit variierbarem Übersetzungsverhältnis zur Übersetzung von Stellwagen von Festkörperenergiewandlern oder dergleichen |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5779149A (en) * | 1996-07-02 | 1998-07-14 | Siemens Automotive Corporation | Piezoelectric controlled common rail injector with hydraulic amplification of piezoelectric stroke |
-
1998
- 1998-03-10 WO PCT/DE1998/000698 patent/WO1999001662A1/de not_active Application Discontinuation
- 1998-03-10 EP EP98921340A patent/EP0923672B1/de not_active Expired - Lifetime
- 1998-03-10 RU RU99106405/06A patent/RU2200248C2/ru not_active IP Right Cessation
- 1998-03-10 JP JP11506061A patent/JP2001500214A/ja active Pending
- 1998-03-10 CN CN98800915A patent/CN1095035C/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3728817A1 (de) * | 1986-09-05 | 1988-03-17 | Toyota Motor Co Ltd | Kraftstoff-einspritzpumpe fuer eine brennkraftmaschine |
EP0477400A1 (de) | 1990-09-25 | 1992-04-01 | Siemens Aktiengesellschaft | Anordnung für einen in Hubrichtung wirkenden adaptiven, mechanischen Toleranzausgleich für den Wegtransformator eines piezoelektrischen Aktors |
DE4306072A1 (de) * | 1993-02-26 | 1994-09-08 | Siemens Ag | Vorrichtung zum Öffnen und Verschließen einer in einem Gehäuse vorhandenen Durchtrittsöffnung |
DE19646847A1 (de) * | 1996-11-13 | 1997-06-12 | Heinz Schmidt | Anordnung eines modularen hydraulischen Stellwegtransformators mit variierbarem Übersetzungsverhältnis zur Übersetzung von Stellwagen von Festkörperenergiewandlern oder dergleichen |
Also Published As
Publication number | Publication date |
---|---|
JP2001500214A (ja) | 2001-01-09 |
EP0923672B1 (de) | 2003-02-26 |
RU2200248C2 (ru) | 2003-03-10 |
CN1095035C (zh) | 2002-11-27 |
CN1231020A (zh) | 1999-10-06 |
EP0923672A1 (de) | 1999-06-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69738384T2 (de) | Kraftstoffeinspritzventil für Brennkraftmaschinen | |
EP0909891B1 (de) | Ventil zum Steuern von Flüssigkeiten | |
EP1117920B1 (de) | Common-rail-injektor | |
DE19500706C2 (de) | Zumeßventil zur Dosierung von Flüssigkeiten oder Gasen | |
EP0900332A1 (de) | Ventil zum steuern von flüssigkeiten | |
DE2051944A1 (de) | Verbesserte elektromagnetische Ein spritzdüse mit Servoeinrichtung | |
DE19544987A1 (de) | Kraftstoffeinspritzvorrichtung | |
DE19817320C1 (de) | Einspritzventil für Kraftstoffeinspritzsysteme | |
WO2010085991A2 (de) | Proportional-druckregelventil | |
DE19946827C1 (de) | Ventil zum Steuern von Flüssigkeiten | |
WO2003027450A1 (de) | Hydraulisch gesteuerter aktuator zur betätigung eines ventils | |
EP0947690B1 (de) | Ventil zum Steuern von Flüssigkeiten | |
EP0941401B1 (de) | Ventil zum steuern von flüssigkeiten | |
DE19646611C1 (de) | Elektro-hydraulisches Steuerventil | |
DE10217594A1 (de) | Brennstoffeinspritzventil | |
EP1144842B1 (de) | Injektor für ein kraftstoffeinspritzsystem für brennkraftmaschinen mit in den ventilsteuerraum ragender düsennadel | |
EP0999360A1 (de) | Steuerventil für Dosiervorrichtung für Fluid | |
WO2002023036A1 (de) | Ventilausbildung für steuerventile | |
DE19940293A1 (de) | Kraftstoffeinspritzventil | |
EP0923672B1 (de) | Ventil zum steuern von flüssigkeiten | |
DE19756669A1 (de) | Ventil zum Steuern von Flüssigkeiten | |
DE10043625C2 (de) | Hydraulisch übersetztes Ventil | |
DE102009026564A1 (de) | Kraftstoff-Injektor mit druckausgeglichenem Steuerventil | |
DE10050599B4 (de) | Einspritzventil mit einem Pumpkolben | |
DE19939478C1 (de) | Ventil zum Steuern von Flüssigkeiten |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 98800915.3 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1998921340 Country of ref document: EP |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN JP KR RU US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1019997001516 Country of ref document: KR |
|
ENP | Entry into the national phase |
Ref document number: 1999 506061 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09254050 Country of ref document: US |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 1998921340 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1019997001516 Country of ref document: KR |
|
WWG | Wipo information: grant in national office |
Ref document number: 1998921340 Country of ref document: EP |
|
WWR | Wipo information: refused in national office |
Ref document number: 1019997001516 Country of ref document: KR |