EP1399667B1 - Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine - Google Patents
Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine Download PDFInfo
- Publication number
- EP1399667B1 EP1399667B1 EP02740253A EP02740253A EP1399667B1 EP 1399667 B1 EP1399667 B1 EP 1399667B1 EP 02740253 A EP02740253 A EP 02740253A EP 02740253 A EP02740253 A EP 02740253A EP 1399667 B1 EP1399667 B1 EP 1399667B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- capsule
- fuel injection
- injection device
- valve member
- 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
- 238000002347 injection Methods 0.000 title claims description 45
- 239000007924 injection Substances 0.000 title claims description 45
- 239000000446 fuel Substances 0.000 title claims description 42
- 238000002485 combustion reaction Methods 0.000 title claims description 14
- 239000002775 capsule Substances 0.000 claims description 35
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 229910017052 cobalt Inorganic materials 0.000 claims description 7
- 239000010941 cobalt Substances 0.000 claims description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
- 238000005482 strain hardening Methods 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 238000005256 carbonitriding Methods 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 238000005121 nitriding Methods 0.000 claims 1
- 238000005480 shot peening Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 12
- 239000002828 fuel tank Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QVYYOKWPCQYKEY-UHFFFAOYSA-N [Fe].[Co] Chemical compound [Fe].[Co] QVYYOKWPCQYKEY-UHFFFAOYSA-N 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric 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
- F02M57/00—Fuel-injectors combined or associated with other devices
- F02M57/02—Injectors structurally combined with fuel-injection pumps
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
Definitions
- US-A-5732888 is an electromagnetically actuated valve in which the electromagnet is a magnetic coil and a having movable piston-shaped armature.
- the magnet armature is at an abutment portion, with which the armature with open Valve comes into contact with a stop, with one Wear-resistant coating provided.
- the fuel injection device with the Features according to claim 1 has the advantage that the Solenoid valve has a simple structure and that the Valve member and the armature can be performed separately and thus an accurate guidance of these parts is possible.
- FIG. 1 shows a Fuel injection device for an internal combustion engine with a solenoid valve in a simplified representation
- Figure 2 the solenoid valve in an enlarged view
- Figure 3 a magnet armature of the solenoid valve in enlarged Representation according to a modified embodiment.
- solenoid valve 50 For controlling the fuel injection by the Fuel injection device has these in Figure 2 enlarged illustrated solenoid valve 50, which by a electronic control device 52 is driven.
- solenoid valve 50 By the solenoid valve 50 will be a connection of the Pump workspace 20 controlled with a discharge space, with open solenoid valve 50, the connection of the Pump work space 20 is opened with the discharge space, so that build up in the pump working chamber 20 no high pressure can and no fuel injection takes place. If that Solenoid valve 50 is closed, so is by this the Pump working space 20 separated from the discharge space, so that in the pump working chamber 20 high pressure corresponding to the stroke build the pump piston 18 and a Fuel injection can be done.
- valve member 56 with its sealing surface 61 rests against the valve seat 60, so is the Pump workspace 20 separated from the discharge chamber and when the valve member 56 with its sealing surface 61 to the valve seat 60 is spaced, then the pump working chamber 20 with the Relief room connected.
- the open position of the Valve member 56 is the suction stroke of the pump piston 18th Fuel through the connecting hole 62 in the Pump workspace 20 sucked.
- the valve member 56 may be in the pump working chamber 20 and in the associated with this via the channel 48 pressure chamber 40th of the fuel injection valve 12 do not build up high pressure, so that the fuel injection valve 12 due to the Closing spring 44 through which the injection valve member 28 with its sealing surface 34 held in contact with the valve seat 36 will, is closed and no fuel injection he follows.
- valve member 56 At the end of the solenoid valve 50 facing away from the Valve member 56 engages a preloaded compression spring 64, through which the valve member 56 in its opening direction that is in a direction from the valve seat 60 way.
- the spring 64 is supported on the one hand at least indirectly on the valve member 56 and on the other hand at a Bore 54 occlusive lid 65 from, in the Pump body 16 is inserted.
- the valve member 56 In his in the annular space 59 projecting end portion, the valve member 56 has a in Cross-section enlarged flange 66 and to these in axial Direction away from the sealing surface 61 cylindrical section 67, at the distance to the flange 66 an enlarged in cross section annular collar 68 is formed is.
- the magnet armature 80 may include one or more axial through holes 79 exhibit.
- the end face of the valve member 56 is located on the the magnetic disk 74 facing the front side of the magnet armature 80 on.
- a prestressed compression spring 83 is arranged, through which the armature 80 is applied to the magnetic disk 74 towards is.
- the by the compression spring 83 to the armature 80th applied force is less than that by the compression spring 64th on the valve member 56 exerted force.
- the magnetic coil 88 is in the recess in the axial direction between the Carrier 86 and the magnetic disk 74 fixed.
- the Carrier 86 is preferably made of plastic Terminal body 89 connected in the electrical Conductor elements are arranged, on the one hand with the Magnetic coil 88 and on the other hand with plug contacts 90th are connected, with which a not shown Plug part of leading to the control device 52 electrical lines is connectable.
- the bore 69 is in an approximately hollow cylindrical neck 91 of the pump body 16 formed at its Outer circumference is provided with an external thread.
- a union nut 92nd slid on the external thread of the neck 91 of the Pump body 16 is screwed on and thus the Solenoid valve 50 is attached to the pump body 16.
- the Union nut 92 engages the carrier 86, which is located on the Magnetic disk 74 is supported, which in turn at the Stop disc 70 is supported, which at the stop shoulder 72 of the pump body 16 is present.
- the sealing ring 77 is through the magnetic disk 74 is elastically compressed when this comes to the stop plate 70 to the plant.
- the hub that the Valve member 56 between its open position and executes its closed position is sized to that the armature 80 is also in the closed position still arranged at an axial distance to the magnetic disk 74 is.
- the stroke h, the valve member 56 between his open position and his closed position is carried out by the distance between the valve seat 60, on which the valve member 56 with its sealing surface 61 for Appendix comes, on the one hand and the stop plate 74, at the the valve member 56 comes to rest with its flange 66, on the other hand.
- the residual air gap s between the Magnetic armature 80 and the magnetic disk 74 can by Using a stopper plate 74 with an adapted Thickness can be adjusted to the required level.
- the Stopping disc 74 can, for example, by stamping be prepared.
- the magnet armature 80 is preferably made of an alloy, which contains at least iron and cobalt, wherein the proportion of cobalt is between 10 and 50%. Preferably the proportion of cobalt is between 15 and 20%, especially advantageous is a proportion of cobalt of about 17%.
- the Percentages of the cobalt content are by weight based.
- the armature 80 is particularly characterized advantageous magnetic properties.
- By the Control device 52 is the time course of the Current flow detected by the magnetic coil 88 and evaluated.
- the magnet armature 80 provides a movable Part of the magnetic circuit, during the movement the inductance of the magnetic circuit is changed, resulting in a certain time course of the current flow through the solenoid 88 leads.
- the magnet armature 80 and / or the capsule 81 also wholly or partially with a method for increasing its surface hardness be treated.
- the magnet armature 80 and / or the capsule 81 can be subjected to a heat treatment process and for example, be case hardened by Gas nitrocarburizing or treated by carbonitriding be.
- the surface hardness of the magnet armature 80 and / or the Capsule 81 can only on the outer shell or at the Be increased inner circumference, at which the leadership of the armature 80 takes place.
- the surface hardness also over a larger area of the surface or over the entire Surface of the armature 80, in particular at the End face of the armature 80, on which the valve member 56th is increased, be increased.
- the capsule 81 may for example consist of plasma nitrided steel.
- the magnet armature 80 and / or the capsule 81 completely or partially a cold work hardening process be subjected and, for example, by ball irradiation or impact strengthening. These too Treatment of the armature 80 and / or the capsule 81 may only on the outer jacket of the magnet armature 80 or on the inner circumference the capsule 81 take place, where the leadership of the armature 80th he follows. Alternatively, the work hardening can also over a larger area of the surface or over the entire Surface of the armature 80 done.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims (8)
- Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine mit wenigstens einem Magnetventil (50) zur Steuerung der Kraftstoffeinspritzung, wobei das Magnetventil (50) durch eine elektrische Steuereinrichtung (52) angesteuert wird und eine Magnetspule (88), einen beweglichen kolbenförmigen Magnetanker (80), durch den ein Ventilglied (56) gegen die Kraft einer auf das Ventilglied (56) wirkenden Rückstellfeder (64) zwischen wenigstens zwei Stellungen bewegbar ist, eine Magnetscheibe (74), durch die der Magnetanker (80) bei stromdurchflossener Magnetspule (88) angezogen wird, und eine topfförmige Kapsel (81) aufweist, in die der Magnetanker (80) eintaucht, wobei der Magnetanker (80) über seinen Außenmantel in der Kapsel (81) verschiebbar geführt ist, dadurch gekennzeichnet, dass die Kapsel (81) einen einstückig mit dieser ausgebildeten Boden (82) aufweist und dass zwischen dem Boden (82) und dem Magnetanker (80) eine Druckfeder (83) eingespannt ist, durch die der Magnetanker (80) zur Magnetscheibe (74) hin beaufschlagt ist, wobei der Magnetanker (80) und das Ventilglied (56) nicht miteinander verbunden sind.
- Kraftstoffeinspritzeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Magnetanker (80) zumindest an seinem Außenmantel und/oder die Kapsel (81) an ihrem Innenmantel mit einer Beschichtung (94) aus einem Metall mit gegenüber dem Material, aus dem der Magnetanker (80) bzw. die Kapsel (81) besteht, höherer Härte versehen ist.
- Kraftstoffeinspritzeinrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Beschichtung (94) aus Chrom oder Nickel besteht.
- Kraftstoffeinspritzeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Magnetanker (80) zumindest an seinem Außenmantel und/oder die Kapsel (81) an ihrem Innenmantel mit einem Verfahren zur Erhöhung der Oberflächenhärte behandelt ist.
- Kraftstoffeinspritzeinrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Magnetanker (80) und/oder die Kapsel (81) einsatzgehärtet ist.
- Kraftstoffeinspritzeinrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Magnetanker (80) und/oder die Kapsel (81) mit einem Nitrierverfahren behandelt ist, insbesondere mit einem Gasnitrocarburierverfahren oder einem Carbonitrierverfahren.
- Kraftstoffeinspritzeinrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Magnetanker (80) und/oder die Kapsel (81) mit einem Kaltverfestigungsverfahren behandelt ist, insbesondere einem Kugelbestrahlungsverfahren oder einem Schlagverfestigungsverfahren.
- Kraftstoffeinspritzeinrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Magnetanker (80) zumindest im wesentlichen aus einer Legierung besteht, die wenigstens Eisen und Cobalt enthält, wobei der Anteil an Cobalt zwischen 10% und 50% beträgt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10119982A DE10119982A1 (de) | 2001-04-24 | 2001-04-24 | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
DE10119982 | 2001-04-24 | ||
PCT/DE2002/001369 WO2002086308A1 (de) | 2001-04-24 | 2002-04-12 | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1399667A1 EP1399667A1 (de) | 2004-03-24 |
EP1399667B1 true EP1399667B1 (de) | 2005-03-23 |
Family
ID=7682486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02740253A Expired - Lifetime EP1399667B1 (de) | 2001-04-24 | 2002-04-12 | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
Country Status (7)
Country | Link |
---|---|
US (1) | US6962144B2 (de) |
EP (1) | EP1399667B1 (de) |
JP (1) | JP2004519591A (de) |
DE (2) | DE10119982A1 (de) |
HU (1) | HUP0301299A2 (de) |
PL (1) | PL358197A1 (de) |
WO (1) | WO2002086308A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10119982A1 (de) | 2001-04-24 | 2002-10-31 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
DE10134056B8 (de) * | 2001-07-13 | 2014-05-28 | Vacuumschmelze Gmbh & Co. Kg | Verfahren zur Herstellung von nanokristallinen Magnetkernen sowie Vorrichtung zur Durchführung des Verfahrens |
DE102005034486A1 (de) * | 2005-07-20 | 2007-02-01 | Vacuumschmelze Gmbh & Co. Kg | Verfahren zur Herstellung eines weichmagnetischen Kerns für Generatoren sowie Generator mit einem derartigen Kern |
US7472844B2 (en) * | 2005-12-21 | 2009-01-06 | Caterpillar Inc. | Fuel injector nozzle with tip alignment apparatus |
US8029627B2 (en) * | 2006-01-31 | 2011-10-04 | Vacuumschmelze Gmbh & Co. Kg | Corrosion resistant magnetic component for a fuel injection valve |
US20070176025A1 (en) * | 2006-01-31 | 2007-08-02 | Joachim Gerster | Corrosion resistant magnetic component for a fuel injection valve |
ATE418625T1 (de) * | 2006-10-30 | 2009-01-15 | Vacuumschmelze Gmbh & Co Kg | Weichmagnetische legierung auf eisen-kobalt-basis sowie verfahren zu deren herstellung |
US8012270B2 (en) | 2007-07-27 | 2011-09-06 | Vacuumschmelze Gmbh & Co. Kg | Soft magnetic iron/cobalt/chromium-based alloy and process for manufacturing it |
US9057115B2 (en) | 2007-07-27 | 2015-06-16 | Vacuumschmelze Gmbh & Co. Kg | Soft magnetic iron-cobalt-based alloy and process for manufacturing it |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3905992A1 (de) | 1989-02-25 | 1989-09-21 | Mesenich Gerhard | Elektromagnetisches hochdruckeinspritzventil |
US5331730A (en) * | 1992-09-03 | 1994-07-26 | Siemens Automotive L.P. | Method of making a coil molded into a magnetic stator |
JP3069990B2 (ja) * | 1993-04-27 | 2000-07-24 | 東洋電装株式会社 | パルスジェネレータの製造方法 |
CN1049951C (zh) * | 1993-12-09 | 2000-03-01 | 罗伯特·博施有限公司 | 电磁操纵阀 |
DE19616084A1 (de) * | 1996-04-23 | 1997-10-30 | Bosch Gmbh Robert | Kraftstoffeinspritzvorrichtung |
DE19641785C2 (de) * | 1996-10-10 | 1999-01-28 | Bosch Gmbh Robert | Ventilnadel für ein Einspritzventil |
DE19653055C1 (de) * | 1996-12-19 | 1998-05-07 | Bosch Gmbh Robert | Verfahren zur Dichtheitsprüfung bei einer Kraftstoffeinspritzpumpe und Kraftstoffeinspritzpumpe zur Durchführung des Verfahrens |
DE19714812A1 (de) * | 1997-04-10 | 1998-10-15 | Bosch Gmbh Robert | Magnetspule |
DE10119982A1 (de) | 2001-04-24 | 2002-10-31 | Bosch Gmbh Robert | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
-
2001
- 2001-04-24 DE DE10119982A patent/DE10119982A1/de not_active Withdrawn
-
2002
- 2002-04-12 JP JP2002583807A patent/JP2004519591A/ja active Pending
- 2002-04-12 DE DE50202551T patent/DE50202551D1/de not_active Expired - Lifetime
- 2002-04-12 HU HU0301299A patent/HUP0301299A2/hu unknown
- 2002-04-12 WO PCT/DE2002/001369 patent/WO2002086308A1/de active IP Right Grant
- 2002-04-12 PL PL02358197A patent/PL358197A1/xx not_active Application Discontinuation
- 2002-04-12 US US10/311,882 patent/US6962144B2/en not_active Expired - Fee Related
- 2002-04-12 EP EP02740253A patent/EP1399667B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2004519591A (ja) | 2004-07-02 |
PL358197A1 (en) | 2004-08-09 |
DE50202551D1 (de) | 2005-04-28 |
US20040025841A1 (en) | 2004-02-12 |
US6962144B2 (en) | 2005-11-08 |
HUP0301299A2 (en) | 2003-08-28 |
DE10119982A1 (de) | 2002-10-31 |
EP1399667A1 (de) | 2004-03-24 |
WO2002086308A1 (de) | 2002-10-31 |
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