EP1135593B1 - Ventil zum steuern von flüssigkeiten - Google Patents
Ventil zum steuern von flüssigkeiten Download PDFInfo
- Publication number
- EP1135593B1 EP1135593B1 EP00974318A EP00974318A EP1135593B1 EP 1135593 B1 EP1135593 B1 EP 1135593B1 EP 00974318 A EP00974318 A EP 00974318A EP 00974318 A EP00974318 A EP 00974318A EP 1135593 B1 EP1135593 B1 EP 1135593B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- pressure
- low
- piston
- chamber
- 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.)
- Expired - Lifetime
Links
Images
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
- F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
- F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
- F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
-
- 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
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means
-
- 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
Definitions
- the invention is based on a valve for controlling Liquids according to the preamble of claim 1.
- the hydraulic chamber closes between two limiting them Pistons, one of which is a piston with a smaller diameter is formed and with a valve member to be controlled is connected and the other piston with a larger diameter is formed and with the piezoelectric Actuator is connected, a common compensation volume one.
- the hydraulic chamber is so between the clamped two pistons that the actuating piston of the Valve member, in its rest position by means of a or several springs relative to a predetermined position is held, one to the gear ratio of Piston diameter makes increased stroke when the larger Piston by the piezoelectric actuator to a certain Distance is moved.
- the valve member, the pistons and the Piezoelectric actuators lie on a common Axis in a row.
- About the equalization volume of Hydraulic chamber can tolerances due to temperature gradients in the component or different thermal expansion coefficients the materials used as well any settling effects are compensated without thereby changing the position of the to be controlled Valve member occurs.
- the hydraulic coupler requires a system pressure which drops due to leakage, if not sufficient Refilling with hydraulic fluid takes place.
- the invention has for its object to provide a valve for To create control of liquids with which the Leakage losses with increasing pressure in the high pressure range be limited.
- the valve according to the invention for controlling fluids with the features of claim 1 has the advantage that for generating the minimum leak rate from the high pressure area in the low pressure area with system pressure one Throttle bore is used, whereby the leakage loss at high pressures in the high pressure area compared to the system pressure supply by a conventional leakage gap or Filling pen is reduced by a multiple.
- FIG. 1 shows a use of the valve according to the invention in a Fuel injection valve 1 for internal combustion engines of Motor vehicles.
- the fuel injection valve 1 is in the present case designed as a common rail injector, wherein the fuel injection over the pressure level in one Valve control chamber 12, which with a high pressure supply connected, is controlled.
- a valve member 2 For setting an injection start, an injection duration and an injection amount about balance of power in the Fuel injection valve 1, a valve member 2 via a piezoelectric actuator 3 formed as a piezoelectric Unit controlled, which operates on the valve control and combustion chamber side facing away from the valve member. 2 is arranged.
- the piezoelectric actuator 3 is composed of several layers constructed and has on its the valve member 2 facing Side an actuator head 4 and on its the valve member side facing away from an actuator base 5, which is located at a wall of a valve body 9 is supported. At the actuator head 4 is located above a support 6, a first piston 7 of the Valve member 2, which is stepped in its diameter is executed.
- the valve member 2 is axially displaceable in a Longitudinal bore executed bore 8 of the valve body. 9 arranged and includes in addition to the first piston 7 a Valve closure member 13 actuated second piston 10, wherein the pistons 7 and 10 by means of a hydraulic transmission coupled together.
- the hydraulic transmission is as a hydraulic chamber 11th formed, which is the deflection of the piezoelectric Actuator 3 transmits.
- the hydraulic chamber 11 closes between the two limiting pistons 7 and 10, of those of the second piston 10 with a smaller diameter and the first piston 7 with a larger diameter is formed, a common compensation volume.
- the hydraulic chamber 11 is between the piston 7 and 10 clamped, that the second piston 10 of the valve member 2 one to the ratio of the piston diameter increased stroke makes when the larger first piston 7 by the piezoelectric actuator 3 to a certain Distance is moved.
- the valve member 2, the piston 7, 10th and the piezoelectric actuator 3 lie on one common axis in a row.
- valve closing member 13 acts on the Valve body 9 formed valve seats 14, 15 together, wherein the valve closing member 13 is a low-pressure region 16 with a system pressure p_sys from a high pressure area 17 with a high pressure or rail pressure p_R separates.
- valve seats 14, 15 are in one of the valve body. 9 formed valve low-pressure chamber 18 formed by the a leakage drain passage 19 and one to a valve system pressure chamber 20 on the piezoelectric actuator 3 facing Side of the valve member 2 leading opening 21st dissipates.
- valve low-pressure chamber 18 has a formed by the lower valve seat 15 connection to the in Figure 1 only indicated valve control chamber 12 in the high pressure area 17.
- valve control chamber 12 is a movable valve spool disposed in the Drawing is not shown.
- the valve system pressure chamber 20 connects to the piezo glove End of the bore 8 and is on the one hand by the valve body 9 and on the other hand by a with the first piston. 7 the valve member 2 and the valve body 9 connected Sealing element 22 limited, with a leakage line 23 from the valve system pressure chamber 20 discharges.
- the sealing element 22nd is presently designed as a bellows-like membrane and prevents the piezoelectric actuator 3 with the in the Valve system pressure chamber 20 contained fuel in contact comes.
- a first piston 7 surrounding the gap 24 and a gap 25 surrounding the second piston 10 is one Leakage from the hydraulic chamber 11 in the valve low-pressure chamber 18 and in particular in the valve system pressure chamber 20 given.
- the high pressure area 17 is provided.
- the channel 27 of the filling device 26 opens on the Low pressure region 16 facing side of the throttle bore 28 in the first piston 7 surrounding gap 24, wherein in Mouth area an annular groove 29 is provided.
- the channel 27 opens into the valve low pressure chamber 18th
- the diameter of the throttle bore 28 is designed such that that a throttle bore 28 passing volume flow the high pressure area 17 at a defined minimum High pressure p_R_min the leakage quantity of the low pressure range 16 compensates.
- the Orifice 28 has a diameter of 50 microns.
- a connection between the throttle bore 28 and the Mouth of the channel 27 in the annular gap 29 a connection between the channel 27 of the filling device 28 and the Valve low pressure chamber 18 via a pressure relief valve 30th provided, which is spring loaded.
- This pressure relief valve 30 is used to set a constant system pressure p_sys in the valve system pressure chamber 20, so that the system pressure for all contiguous common rail injectors can be kept the same.
- the fuel injection valve 1 according to FIG. 1 operates in this case in the manner described below.
- valve closure member 13 at the upper valve seat 14 by a spring 31st Upon discharge of the valve control chamber 12, the valve closure member 13 at the upper valve seat 14 by a spring 31st held.
- the piezoelectric actuator 3 When an injection through the fuel injector 1, the piezoelectric actuator 3 is energized, making this his axial extent abruptly increased. In such a quick operation of the piezoelectric actuator 3 is based on the Valve body 9 from, whereby the second piston 10, the Valve closure member 13 of the valve member 2 from its upper Valve seat 14 in a middle position between the two Valve seats 14, 15 moves.
- the moving membrane 22 By the adjusting movement of the Valve member 2 is due to the moving membrane 22 reduces the volume of the valve system pressure chamber 20, wherein a pressure reduction by leakage from the hydraulic chamber into the valve system pressure chamber 20 and the valve low-pressure chamber 18 and from these via the leakage line 23 and the Leakage drainage channel 19 and via the pressure relief valve 30th takes place.
- each control (energizing or terminating the energizing) of the piezoelectric unit is a fuel injection allows.
- the throttle bore 28 must be dimensioned so that the Provision of system pressure p_sys also at one minimum high pressure p_R_min is still secured. on the other hand also decreases with increasing high or rail pressure p_R the leakage in the low pressure area 16 too. That's why it opens the pressure relief valve 30 the more, the higher the channel 27 supplied high pressure p_R is to comply with the constant system pressure p_sys excess hydraulic fluid or to drain fuel.
- FIG. 3 is a diagram can be seen, which shows that the throttle bore 28 while significant advantages over the realization of the filling of the low-pressure region 16 with a conventional filling pen has.
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)
- Control Of Non-Electrical Variables (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19946833 | 1999-09-30 | ||
DE19946833A DE19946833C2 (de) | 1999-09-30 | 1999-09-30 | Ventil zum Steuern von Flüssigkeiten |
PCT/DE2000/003138 WO2001023743A1 (de) | 1999-09-30 | 2000-09-09 | Ventil zum steuern von flüssigkeiten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1135593A1 EP1135593A1 (de) | 2001-09-26 |
EP1135593B1 true EP1135593B1 (de) | 2005-01-12 |
Family
ID=7923814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00974318A Expired - Lifetime EP1135593B1 (de) | 1999-09-30 | 2000-09-09 | Ventil zum steuern von flüssigkeiten |
Country Status (8)
Country | Link |
---|---|
US (1) | US6530555B1 (ko) |
EP (1) | EP1135593B1 (ko) |
JP (1) | JP2003510506A (ko) |
KR (1) | KR20010101059A (ko) |
AT (1) | ATE287039T1 (ko) |
CZ (1) | CZ20011879A3 (ko) |
DE (2) | DE19946833C2 (ko) |
WO (1) | WO2001023743A1 (ko) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10003863B4 (de) * | 2000-01-28 | 2004-11-18 | Robert Bosch Gmbh | Einspritzdüse |
DE10019764B4 (de) * | 2000-04-20 | 2004-09-23 | Robert Bosch Gmbh | Ventil zum Steuern von Flüssigkeiten |
DE10019765B4 (de) * | 2000-04-20 | 2004-12-09 | Robert Bosch Gmbh | Ventil zum Steuern von Flüssigkeiten |
DE10019767A1 (de) * | 2000-04-20 | 2001-10-31 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
DE10043625C2 (de) * | 2000-09-05 | 2003-03-27 | Bosch Gmbh Robert | Hydraulisch übersetztes Ventil |
DE10046416C2 (de) * | 2000-09-18 | 2002-11-07 | Orange Gmbh | Ventilausbildung für Steuerventile |
DE10048933A1 (de) * | 2000-10-04 | 2002-05-02 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
DE10136186A1 (de) * | 2001-07-25 | 2003-02-06 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
DE10139871B4 (de) * | 2001-08-14 | 2010-08-26 | Robert Bosch Gmbh | Ventil zum Steuern von Flüssigkeiten |
DE10139857B4 (de) | 2001-08-14 | 2009-09-10 | Robert Bosch Gmbh | Ventil zum Steuern von Flüssigkeiten |
DE10140799A1 (de) * | 2001-08-20 | 2003-03-06 | Bosch Gmbh Robert | Brennstoffeinspritzventil |
DE10147493A1 (de) * | 2001-09-26 | 2003-04-17 | Bosch Gmbh Robert | Ventil zum Steuern von Flüssigkeiten |
DE10155390A1 (de) * | 2001-11-10 | 2003-05-22 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Laden und Entladen eines piezoelektrischen Elementes |
DE10160191A1 (de) * | 2001-12-07 | 2003-06-26 | Bosch Gmbh Robert | Kraftstoffinjektor mit fremdbetätigtem Steller und optimierter Systemdruckversorgung |
EP1511932B1 (de) * | 2002-04-04 | 2006-11-29 | Siemens Aktiengesellschaft | Einspritzventil |
DE10236985A1 (de) * | 2002-08-13 | 2004-02-26 | Robert Bosch Gmbh | Ventil zum Steuern von Flüssigkeiten |
WO2004051071A1 (de) * | 2002-12-05 | 2004-06-17 | Robert Bosch Gmbh | Kraftstoffeinspritzvorrichtung mit einem 3/3-wege-steuerventil zur einspritzverlaufsformung |
DE10260349B4 (de) * | 2002-12-20 | 2013-12-12 | Robert Bosch Gmbh | Brennstoffeinspritzventil |
DE10302863B3 (de) * | 2003-01-25 | 2004-09-16 | Robert Bosch Gmbh | Hydraulischer Koppler für Piezo-Injektoren mit verbesserter Befüllung |
DE10352736A1 (de) * | 2003-11-12 | 2005-07-07 | Robert Bosch Gmbh | Kraftstoffinjektor mit direkter Nadeleinspritzung |
DE102005015997A1 (de) * | 2004-12-23 | 2006-07-13 | Robert Bosch Gmbh | Kraftstoffinjektor mit direkter Steuerung des Einspritzventilgliedes |
DE102012006658A1 (de) | 2012-04-03 | 2013-10-10 | Burkhard Büstgens | Mikro-Pilotventil |
DE102013012444A1 (de) * | 2013-07-29 | 2015-01-29 | Astrium Gmbh | Ventilanordnung zum Schalten und/oder Regeln eines Medienstroms eines Raumfahrttriebwerks und Raumfahrttriebwerk |
CN111878272B (zh) * | 2020-06-30 | 2021-10-29 | 潍柴动力股份有限公司 | 高压油泵的排气装置及排气方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE59010904D1 (de) * | 1990-09-25 | 2000-05-31 | Siemens Ag | Anordnung für einen in Hubrichtung wirkenden adaptiven, mechanischen Toleranzausgleich für den Wegtransformator eines piezoelektrischen Aktors |
DE19540155C2 (de) * | 1995-10-27 | 2000-07-13 | Daimler Chrysler Ag | Servoventil für eine Einspritzdüse |
FI101738B1 (fi) * | 1996-01-30 | 1998-08-14 | Waertsilae Nsd Oy Ab | Ruiskutusventtiilijärjestely |
DE19624001A1 (de) | 1996-06-15 | 1997-12-18 | Bosch Gmbh Robert | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
US5779149A (en) * | 1996-07-02 | 1998-07-14 | Siemens Automotive Corporation | Piezoelectric controlled common rail injector with hydraulic amplification of piezoelectric stroke |
DE19708304C2 (de) * | 1997-02-28 | 1999-09-30 | Siemens Ag | Vorrichtung zur Übertragung einer Bewegung und Einspritzventil mit einer Vorrichtung zur Übertragung einer Bewegung |
DE29708369U1 (de) * | 1997-05-09 | 1997-07-10 | FEV Motorentechnik GmbH & Co. KG, 52078 Aachen | Steuerbares Einspritzventil für die Kraftstoffeinspritzung an Brennkraftmaschinen |
DE19732802A1 (de) | 1997-07-30 | 1999-02-04 | Bosch Gmbh Robert | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
DE19742943C1 (de) * | 1997-09-29 | 1999-04-22 | Siemens Ag | Vorrichtung in einem Einspritzventil zum Halten einer formschlüssigen Verbindung |
US5875764A (en) * | 1998-05-13 | 1999-03-02 | Siemens Aktiengesellschaft | Apparatus and method for valve control |
DE19949848A1 (de) * | 1999-10-15 | 2001-04-19 | Bosch Gmbh Robert | Druckübersetzer für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen |
-
1999
- 1999-09-30 DE DE19946833A patent/DE19946833C2/de not_active Expired - Fee Related
-
2000
- 2000-09-09 WO PCT/DE2000/003138 patent/WO2001023743A1/de not_active Application Discontinuation
- 2000-09-09 JP JP2001527101A patent/JP2003510506A/ja active Pending
- 2000-09-09 US US09/831,603 patent/US6530555B1/en not_active Expired - Fee Related
- 2000-09-09 AT AT00974318T patent/ATE287039T1/de not_active IP Right Cessation
- 2000-09-09 KR KR1020017006490A patent/KR20010101059A/ko not_active Application Discontinuation
- 2000-09-09 CZ CZ20011879A patent/CZ20011879A3/cs unknown
- 2000-09-09 EP EP00974318A patent/EP1135593B1/de not_active Expired - Lifetime
- 2000-09-09 DE DE50009213T patent/DE50009213D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR20010101059A (ko) | 2001-11-14 |
JP2003510506A (ja) | 2003-03-18 |
ATE287039T1 (de) | 2005-01-15 |
DE50009213D1 (de) | 2005-02-17 |
CZ20011879A3 (cs) | 2002-04-17 |
DE19946833A1 (de) | 2001-05-03 |
WO2001023743A1 (de) | 2001-04-05 |
US6530555B1 (en) | 2003-03-11 |
DE19946833C2 (de) | 2002-02-21 |
EP1135593A1 (de) | 2001-09-26 |
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