EP1316719A2 - Injektor mit einem Magnetventil zur Steuerung eines Einspritzventils - Google Patents
Injektor mit einem Magnetventil zur Steuerung eines Einspritzventils Download PDFInfo
- Publication number
- EP1316719A2 EP1316719A2 EP02022592A EP02022592A EP1316719A2 EP 1316719 A2 EP1316719 A2 EP 1316719A2 EP 02022592 A EP02022592 A EP 02022592A EP 02022592 A EP02022592 A EP 02022592A EP 1316719 A2 EP1316719 A2 EP 1316719A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- injector
- anchor
- valve
- injection
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 title claims abstract description 41
- 239000007924 injection Substances 0.000 title claims abstract description 41
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 239000000446 fuel Substances 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 2
- 238000013016 damping Methods 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000001934 delay Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/002—Arrangement of leakage or drain conduits in or from 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
- 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
- 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
- F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating 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
- 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
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
- F02M63/0036—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat with spherical or partly spherical shaped valve member ends
-
- 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
- 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 an injector, in particular for fuel injection, with a solenoid valve for Control of an injection valve according to the preamble of Main claim.
- a solenoid valve for Control of an injection valve according to the preamble of Main claim.
- Such solenoid valves are used for Control of an injector Fuel injection device with a nozzle needle, the Opening and closing position by the solenoid valve are controllable so that injection holes for injection can be opened by fuel.
- the solenoid valve has a movable armature, which at Energization of the solenoid group of the solenoid valve by one Valve seat in the lower armature space lifts off.
- This valve seat in turn stands over one or more (throttle) Bores in fluid communication with the control pressure chamber of the Injector.
- When opening the valve seat builds the pressure in the control pressure chamber of the injection valve decreases, whereby fluid (pressure medium) is directed towards the holes Valve seat and from there flows into the lower anchor space.
- a common rail injector works according to this known method of operation (CRI), one main and one Pre-injection realized with very short injection times can be.
- CRI CRI
- Such a solenoid valve is known for example from DE 196 50 865 A1.
- the solenoid valve If the solenoid valve is no longer energized, it moves Anchor by the restoring force of a return spring below and closes the so-called A-throttle leading valve seat. This increases the pressure in the Control room on again, with the nozzle needle down is moved and the injection holes are closed.
- the injector according to the invention has the main claim Means for reducing in the lower anchor space occurring pressure fluctuations. Because it has shown that pressure surges in the lower anchor space that are through the hole in the anchor guide directly onto the Impact anchor surface, lifting the anchor from Valve seat and thus a delayed closing of the Cause nozzle needle. By reducing the Pressure fluctuations in the lower anchor space can therefore do that Anchor bounces are reduced to a minimum and therefore a Guaranteed continuous closing of the nozzle needle become.
- the strength of the anchor bouncing depends on Return back pressure (pressure of the return bore recirculated leakage quantities), which is due to the system in one certain tolerance range.
- Return back pressure pressure of the return bore recirculated leakage quantities
- the means to reduce pressure fluctuations in the lower Anchors can be recesses or Built-in enclosures through which an enlarged volume of the Return bore and / or the lower anchor space achieved becomes.
- certain of the repatriation of the Leakage affected sections in the solenoid valve and in Injection valve is enlarged in volume his. Such an increase in volume causes Reduction of the pressure and thus a reduction of Pressure surges.
- Another measure to reduce pressure fluctuations in the lower anchor space is the installation of a throttle in the Return hole in front of the lower anchor space.
- the invention leads to a course of the anchor stroke, the strong compared to the course of known solenoid valves is damped, so that barely any anchor bounce is noticeable is. Accordingly, the course of the needle stroke is Nozzle needle is a continuous one, so the nozzle needle into theirs without delay Closed position moves. This improves the noise and Engine emission values. Furthermore, the changes Injection quantity no longer dependent on the Return counterpressure. The injection quantity is thus regardless of the return counter pressure, which also makes the Power values of the engine in addition to its noise and Emission values are improved.
- the undefined bouncing of the anchor and thus that undefined closing of the nozzle needle causes when standing technology a high stroke / stroke spread of the injection quantity.
- the continuous closure achieved by the invention the nozzle needle thus causes a smaller stroke / stroke spread the injection quantity.
- it consists of emissions and Noise, the desire to have several short to be able to represent successive injections. This is only possible if the anchor does not rebound or quickly comes to rest.
- the The interval between successive injections is reduced be because the nozzle needle is continuously without Delay moved to its closed position.
- FIG. 1 shows the usual structure of a solenoid valve 1 and injector 2 existing injector as he especially for fuel injection in common rail systems is used.
- the one-piece anchor 3 is by energizing the Solenoid valve 1 against the spring force of the armature spring 11 after pulled up.
- the armature 3 runs in the armature guide 12 and lies on the valve seat 4 when the solenoid valve 1 is not energized of the injector 2. In this state it is Fluid connection to the control pressure chamber 8 of the injection valve 2 interrupted via the A throttle 6 and the bore 7.
- energizing the solenoid valve opens the A throttle 6 and the pressure in the control pressure chamber 8 drops because Fluid now from the control pressure chamber 8 into the lower armature chamber 5 can flow.
- the inlet to the control pressure chamber is through limits the so-called Z-choke (not shown), whereas the nozzle needle 17 (see FIG. 2) constantly one High pressure fuel acting in the opening direction is exposed. Since the pressure in the control pressure chamber 8 at open A-throttle 6 is less than that at the Nozzle needle 17 pending high fuel pressure settles the push rod 13 in motion and pulls the nozzle needle 17th in the opening direction, causing the injection holes be opened and the injector inject fuel can.
- Figure 2 shows the lower part of the injector Injector 2, with only some parts are designated.
- the push rod 13 of Figure 1 is the Nozzle needle 17 connected.
- the lower nozzle needle chamber is with 16 designated.
- Leakage quantities occur at various points on the injector on the return hole 9 in the lower Anchor room 5 can be returned. These leakage amounts occur on the seal of the valve piece to the injector body the point designated 14, at point 15 between Push rod 13 and valve piece and at position 18 between nozzle and nozzle holder (see Figures 1 and 2). In addition to the leakage amount, the control amount from the A throttle 6 through the hole in the anchor guide 12 Total return 10 from the injector into the tank returned.
- the course of this process over time is shown in FIG. 4 shown.
- the needle stroke is 34, the armature stroke is 32 designated.
- the anchor bounces when the Solenoid valve for short opening periods 31, the course the anchor stroke corresponds approximately to that in this area damped vibration.
- the course of the needle stroke of the As a result, nozzle needle 17 is not linear but points Delays 33 on.
- Figures 5 and 6 show the analog representations 3 and 4 in a now according to the invention optimized injector.
- the Return counter pressure in the area of 1600 bar remains as 5 shows the injection quantity (curve 40) unchanged.
- the course of the needle stroke 43 is corresponding linear in Figure 6, i.e. H. the nozzle needle closes continuously without delay.
- the course of the needle stroke is denoted by 44 in FIG.
- the armature stroke 42 shows a significantly reduced in the injector according to the invention Anchor bouncing 41. Duration and strength of opening the Armature after switching off the energization of the solenoid valve are clear compared to the course of Figure 4 reduced.
- the injector according to the invention improves the noise, Emission, and power values of the engine by a ensures continuous closing of the nozzle needle and the dependence of the injection quantity on fluctuations of the Return counter pressure eliminated.
- the defined closing of the The injector nozzle causes smaller stroke / stroke variations the injection quantity and the distance consecutive injections can be compared to conventional injectors can be shortened.
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)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
- Figur 1
- zeigt den oberen Teil eines Injektors mit Magnetventil und dem oberen Teil des Einspritzventils,
- Figur 2
- zeigt den unteren Teil des Einspritzventils,
- Figur 3
- zeigt die Abhängigkeit der Einspritzmenge vom Rücklaufgegendruck bei bekannten Injektoren,
- Figur 4
- zeigt den zeitlichen Verlauf des Anker- und Nadelhubs beim bekannten Injektor,
- Figur 5
- zeigt die Abhängigkeit der Einspritzmenge vom Rücklaufgegendruck beim erfindungsgemäß optimierten Injektor und
- Figur 6
- zeigt den zeitlichen Verlauf des Anker- und Nadelhubs beim erfindungsgemäß optimierten Injektor.
Claims (3)
- Injektor, insbesondere zur Kraftstoffeinspritzung, mit einem Magnetventil (1) zur Steuerung eines Einspritzventils (2), wobei das Magnetventil (1) einen bewegbaren Anker (3) aufweist, der auf einen Ventilsitz (4) im unteren Ankerraum (5) aufbringbar ist, der seinerseits über eine oder mehrere Bohrungen (6, 7) mit dem Steuerdruckraum (8) des Einspritzventils (2) in Fluidverbindung steht, und wobei eine zum unteren Ankerraum (5) führende Rücklaufbohrung (9) im Injektor zur Rückführung von Leckmengen in den unteren Ankerraum (5) vorgesehen ist,
dadurch gekennzeichnet, dass Mittel zur Reduzierung von im unteren Ankerraum (5) auftretenden Druckschwankungen vorgesehen sind. - Injektor nach Anspruch 1, dadurch gekennzeichnet, dass ein oder mehrere der von der Rückführung der Leckmengen betroffenen Abschnitte des Injektors, wie die Rücklaufbohrung (9) und der untere Ankerraum (5), durch einzuarbeitende Ausnehmungen oder Einbauten in ihrem Volumen vergrößert ausgebildet sind.
- Injektor nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass in der Rücklaufbohrung (9) vor dem unteren Ankerraum (5) eine Drossel eingebaut ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10159003A DE10159003A1 (de) | 2001-11-30 | 2001-11-30 | Injektor mit einem Magnetventil zur Steuerung eines Einspritzventils |
DE10159003 | 2001-11-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1316719A2 true EP1316719A2 (de) | 2003-06-04 |
EP1316719A3 EP1316719A3 (de) | 2003-08-06 |
EP1316719B1 EP1316719B1 (de) | 2008-02-06 |
Family
ID=7707669
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02022592A Expired - Lifetime EP1316719B1 (de) | 2001-11-30 | 2002-10-09 | Injektor mit einem Magnetventil zur Steuerung eines Einspritzventils |
Country Status (4)
Country | Link |
---|---|
US (1) | US6877680B2 (de) |
EP (1) | EP1316719B1 (de) |
JP (1) | JP3902757B2 (de) |
DE (2) | DE10159003A1 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008025607A1 (de) * | 2006-08-30 | 2008-03-06 | Robert Bosch Gmbh | Injektor für brennkraftmaschinen |
WO2008083882A1 (de) * | 2007-01-10 | 2008-07-17 | Robert Bosch Gmbh | Injektor zum einspritzen von kraftstoff |
DE102011083005A1 (de) | 2011-09-20 | 2013-03-21 | Man Diesel & Turbo Se | Verfahren zur Spülung eines Ankerraums eines zur Steuerung eines Fluidmassenstroms vorgesehenen Magnetventils |
DE102013003104A1 (de) * | 2013-02-25 | 2014-08-28 | L'orange Gmbh | Krafftstoffinjektor |
DE102015204037A1 (de) | 2015-03-06 | 2016-09-08 | Robert Bosch Gmbh | Verfahren zur Steuerung eines Common-Rail-Einspritzsystems |
CN114458508A (zh) * | 2022-03-09 | 2022-05-10 | 哈尔滨工程大学 | 一种基于永磁实现高动态响应的电磁-永磁耦合的高速电磁阀 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7207760B2 (en) * | 2001-12-06 | 2007-04-24 | Junkers John K | Washer and fastener provided with a washer |
DE102005004327A1 (de) * | 2005-01-31 | 2006-08-03 | Robert Bosch Gmbh | Elektrische Trennung in Kraftstoffinjektoren |
DE102006027780A1 (de) | 2006-06-16 | 2007-12-20 | Robert Bosch Gmbh | Kraftstoffinjektor |
ATE423901T1 (de) * | 2006-10-24 | 2009-03-15 | Fiat Ricerche | Magnetdosierventil für ein brennstoffeinspritzventil |
WO2011100337A2 (en) * | 2010-02-10 | 2011-08-18 | Tenneco Automotive Operating Company Inc. | Pressure swirl flow injector with reduced flow variability and return flow |
US9683472B2 (en) | 2010-02-10 | 2017-06-20 | Tenneco Automotive Operating Company Inc. | Electromagnetically controlled injector having flux bridge and flux break |
US8740113B2 (en) | 2010-02-10 | 2014-06-03 | Tenneco Automotive Operating Company, Inc. | Pressure swirl flow injector with reduced flow variability and return flow |
US8973895B2 (en) | 2010-02-10 | 2015-03-10 | Tenneco Automotive Operating Company Inc. | Electromagnetically controlled injector having flux bridge and flux break |
HUE026321T2 (en) * | 2012-01-26 | 2016-05-30 | Delphi Int Operations Luxembourg Sarl | Fuel Injector Control Valve |
US8978364B2 (en) * | 2012-05-07 | 2015-03-17 | Tenneco Automotive Operating Company Inc. | Reagent injector |
US8910884B2 (en) | 2012-05-10 | 2014-12-16 | Tenneco Automotive Operating Company Inc. | Coaxial flow injector |
US10704444B2 (en) | 2018-08-21 | 2020-07-07 | Tenneco Automotive Operating Company Inc. | Injector fluid filter with upper and lower lip seal |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19650865A1 (de) | 1996-12-07 | 1998-06-10 | Bosch Gmbh Robert | Magnetventil |
DE19708104A1 (de) | 1997-02-28 | 1998-09-03 | Bosch Gmbh Robert | Magnetventil |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61226527A (ja) * | 1985-03-30 | 1986-10-08 | Nippon Denso Co Ltd | 燃料噴射制御装置 |
US4911127A (en) * | 1989-07-12 | 1990-03-27 | Cummins Engine Company, Inc. | Fuel injector for an internal combustion engine |
JPH06147050A (ja) * | 1992-11-02 | 1994-05-27 | Nippondenso Co Ltd | 燃料噴射装置 |
JP3605810B2 (ja) * | 1995-05-01 | 2004-12-22 | 株式会社デンソー | 燃料噴射装置 |
US5842452A (en) * | 1997-11-25 | 1998-12-01 | Pattanaik; Satish | Idle stabilizing variable area inlet for a hydraulically-actuated fuel injection system |
DE19910589C2 (de) * | 1999-03-10 | 2002-12-05 | Siemens Ag | Einspritzventil für eine Brennkraftmaschine |
DE10009037A1 (de) * | 2000-02-25 | 2001-09-06 | Bosch Gmbh Robert | Steuerventil für eine Kraftstoff-Einspritzdüse |
-
2001
- 2001-11-30 DE DE10159003A patent/DE10159003A1/de not_active Withdrawn
-
2002
- 2002-10-09 DE DE50211643T patent/DE50211643D1/de not_active Expired - Lifetime
- 2002-10-09 EP EP02022592A patent/EP1316719B1/de not_active Expired - Lifetime
- 2002-11-20 US US10/299,896 patent/US6877680B2/en not_active Expired - Fee Related
- 2002-11-28 JP JP2002345992A patent/JP3902757B2/ja not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19650865A1 (de) | 1996-12-07 | 1998-06-10 | Bosch Gmbh Robert | Magnetventil |
DE19708104A1 (de) | 1997-02-28 | 1998-09-03 | Bosch Gmbh Robert | Magnetventil |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008025607A1 (de) * | 2006-08-30 | 2008-03-06 | Robert Bosch Gmbh | Injektor für brennkraftmaschinen |
WO2008083882A1 (de) * | 2007-01-10 | 2008-07-17 | Robert Bosch Gmbh | Injektor zum einspritzen von kraftstoff |
DE102011083005A1 (de) | 2011-09-20 | 2013-03-21 | Man Diesel & Turbo Se | Verfahren zur Spülung eines Ankerraums eines zur Steuerung eines Fluidmassenstroms vorgesehenen Magnetventils |
DE102011083005B4 (de) | 2011-09-20 | 2024-05-08 | Man Energy Solutions Se | Verfahren zur Spülung eines Ankerraums eines zur Steuerung eines Fluidmassenstroms vorgesehenen Magnetventils und Magnetventil |
DE102013003104A1 (de) * | 2013-02-25 | 2014-08-28 | L'orange Gmbh | Krafftstoffinjektor |
DE102015204037A1 (de) | 2015-03-06 | 2016-09-08 | Robert Bosch Gmbh | Verfahren zur Steuerung eines Common-Rail-Einspritzsystems |
CN114458508A (zh) * | 2022-03-09 | 2022-05-10 | 哈尔滨工程大学 | 一种基于永磁实现高动态响应的电磁-永磁耦合的高速电磁阀 |
CN114458508B (zh) * | 2022-03-09 | 2022-12-13 | 哈尔滨工程大学 | 一种基于永磁实现高动态响应的电磁-永磁耦合的高速电磁阀 |
Also Published As
Publication number | Publication date |
---|---|
JP3902757B2 (ja) | 2007-04-11 |
EP1316719A3 (de) | 2003-08-06 |
DE50211643D1 (de) | 2008-03-20 |
EP1316719B1 (de) | 2008-02-06 |
JP2003172232A (ja) | 2003-06-20 |
US20030150930A1 (en) | 2003-08-14 |
DE10159003A1 (de) | 2003-06-18 |
US6877680B2 (en) | 2005-04-12 |
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