EP0440758A1 - Elektromagnetisches schaltventil. - Google Patents
Elektromagnetisches schaltventil.Info
- Publication number
- EP0440758A1 EP0440758A1 EP19900910556 EP90910556A EP0440758A1 EP 0440758 A1 EP0440758 A1 EP 0440758A1 EP 19900910556 EP19900910556 EP 19900910556 EP 90910556 A EP90910556 A EP 90910556A EP 0440758 A1 EP0440758 A1 EP 0440758A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- valve needle
- needle
- armature
- bore
- 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
- 239000000446 fuel Substances 0.000 claims abstract description 15
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims abstract description 8
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 239000012528 membrane Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 4
- 230000005284 excitation Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 230000010355 oscillation Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/04—Pumps peculiar thereto
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
-
- 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
- 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
Definitions
- the invention relates to an electromagnetic switching valve for controlling the passage of a fluid line, in particular for fuel injection pumps, de genus defined in the preamble of claim 1.
- Sol che for example from DE 37 32 553 AI known switching valves, in which the armature is not liquid- but air-flushed, have a relatively high switching speed, since the quite large magnet armature is no longer moved in the fluid and is therefore hydraulically damped.
- valve member bouncing after valve closing If such a solenoid valve is used in fuel injection pumps, the valve member will open due to its bouncing impermissibly large spreads of the injected fuel tight.
- the valve bounce can be limited to an uncritical value in that the valve seat geometry is designed so that due to the squeezing flow when closing the valve within the
- the electromagnetic switching valve with the characterizing features of claim 1 has the advantage that the bouncing amplitude occurring on the valve member is very small and quickly decreases due to the oscillation in phase of the two masses of valve needle and magnet armature.
- the quantity variations that still occur when used in fuel injection pumps are therefore extremely small and are all within the tolerance range.
- the expansion rod runs in the interior of the hollow cylindrical valve needle, in the end of which the magnet armature faces a protruding T-shaped end piece which carries the magnet armature on its transverse part and is thus supported on dej valve needle and in its middle part carries a threaded hole.
- the expansion rod is in one end Screwed middle part of the end piece and is supported with its other end on the valve needle.
- the middle part of the end piece has an external thread on which an adapter sleeve is screwed.
- the collet defines on the one hand the electromagnet -Opposite the liquid sealing membrane fixed and is supported on the other hand, de end face of the valve needle from. The latter has the
- Fig. 1 shows a longitudinal section of an electromagnetic
- Fig. 2 each a diagram of the time course of and 3 strokes of the valve needle and armature with correctly matched elastic coupling (Fig. 2) and incorrectly matched elastic coupling (Fig. 3) between valve needle and armature. Description of the embodiment
- the electromagnetic switching valve shown in longitudinal section in FIG. 1 has a two-part valve housing 10, consisting of a metallic valve block 11 and a plastic cap 12 placed thereon.
- the cap 12 covers a recess 13 in the valve block 11, in which a through hole 14 opens coaxially.
- a through hole 14 opens coaxially.
- annular groove 15 Approximately in the middle of the through bore 14 is an annular groove 15, into which an outwardly leading transverse bore opens, which forms the fuel inflow 16 of the valve housing 10.
- a further transverse bore opening at a distance from this transverse bore in the through bore 14 and also leading to the outside forms the fuel outlet 17.
- an oblique bore 18 opens into the recess 13 and leads to the same side of the valve block 11 to the outside, on which the through hole 14 also ends.
- Through bore 14 and oblique bore 18 are covered in a liquid-tight manner by a cover 19, in which an annular groove 20 is formed, which is connected to the through bore 14 and the oblique bore 18 and
- a valve needle 21 is axially displaceably guided, which carries a valve member 22 in the area of the annular groove 15, which cooperates with a valve seat 23.
- the valve seat 23 is formed on the fuel drain 17 facing groove flank of the annular groove 15 in an annular shape and encloses a valve opening 24 between the fuel flow 16 and the fuel drain 17.
- the valve needle 21 is actuated by an electromagnet 25 which is housed in the plastic cap 12 air-washed .
- the rotationally symmetrical The trained electromagnet 25 has, in a known manner, a magnet pot 26 made of soft magnetic material with a coaxial pot core 27 striving away from the pot bottom, an excitation coil 28 enclosing the pot core 27 and a magnet armature 29 which is spaced apart from the magnet pot 26 and pot core 27 with working air, on the magnet pot 25 facing away from the magnet armature 29 is a cross-sectionally T-shaped end piece 30 with its cross member 301.
- the end piece 30 carries on its central part 302 an external thread 31 and a coaxial threaded bore 32.
- a clamping sleeve 33 is screwed onto the external thread 31 and braces the inner edge of an annular membrane 34 on the cross part 301 of the end piece 30.
- the outer edge of the membrane 34 is fixed between an annular seal 35 resting on the base of the recess 13 and the end face of a screw ring 36 which is screwed into an internal thread 37 in the recess 13.
- the metal membrane 34 is biased against the magnetic force of the electromagnet 25. It therefore fulfills two functions, namely on the one hand the sealing of the electromagnet 25 with respect to the liquid-carrying area in the valve block 11 and on the other hand the resetting of the magnet armature 29 when the electromagnet 25 is not energized.
- an expansion rod 38 is screwed in, which coaxially passes through the valve needle 21 and with its other end passes through a bore 39 in the valve needle 21.
- the crossbar 40 carries a head 41 which is supported on the outside of the crossbar 40.
- the head 41 is provided with an Allen key 42 for inserting a turning tool.
- the head 41 is covered by the cover 19, so that the Allen key 42 is only exposed after the cover 19 has been removed for the insertion of the turning tool.
- the expansion rod 38 forms an elastic coupling between the valve needle 21 and the magnet armature 29 of the electromagnet 25, which is set by appropriate pretensioning of the expansion rod 38 so that after the valve member 22 impacts the valve seat 23 on the valve seat 23, the magnet armature 29 and the valve needle 21 swing against each other in phase.
- the bias of the expansion rod 38 can be more or less deep
- Screwing the threaded end of the expansion rod 38 into the threaded bore 32 in the end piece 30 can be set.
- valve needle 21 and armature 29 each show a diagram of the time course of the stroke of valve needle 21 (curve a) and armature 29 (curve b) when the electromagnet 25 is excited.
- 2 shows the correct setting of the pretension of the expansion rod 38.
- Valve needle 21 and magnet armature 29 oscillate in phase opposition, the bounce amplitude P A is very small.
- valve needle 21 and armature 29 vibrate in phase.
- the bounce amplitude P A is a multiple of the bounce amplitude in FIG. 2.
- the pretensioning of the expansion rod 38 must be adjusted by means of a turning tool, which is inserted into the socket 42 of the head 41 after the cover 19 has been removed.
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)
- Magnetically Actuated Valves (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3928613 | 1989-08-30 | ||
DE3928613A DE3928613A1 (de) | 1989-08-30 | 1989-08-30 | Elektromagnetisches schaltventil |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0440758A1 true EP0440758A1 (de) | 1991-08-14 |
EP0440758B1 EP0440758B1 (de) | 1992-12-30 |
Family
ID=6388144
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90910556A Expired - Lifetime EP0440758B1 (de) | 1989-08-30 | 1990-07-26 | Elektromagnetisches schaltventil |
Country Status (6)
Country | Link |
---|---|
US (1) | US5123626A (de) |
EP (1) | EP0440758B1 (de) |
JP (1) | JP2825649B2 (de) |
KR (1) | KR0167111B1 (de) |
DE (2) | DE3928613A1 (de) |
WO (1) | WO1991003641A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4020951A1 (de) * | 1990-06-30 | 1992-01-02 | Bosch Gmbh Robert | Magnetventil |
US5236173A (en) * | 1992-03-11 | 1993-08-17 | Siemens Automotive L.P. | Armature bounce damper |
IT227711Y1 (it) * | 1992-12-29 | 1997-12-15 | Elasis Sistema Ricerca Fiat | Valvola di dosaggio a comando elettromagnetico per un iniettore di combustibile |
DE4315646A1 (de) * | 1993-05-11 | 1994-11-17 | Bosch Gmbh Robert | Kraftstoffeinspritzpumpe für Brennkraftmaschinen |
DE4322546A1 (de) * | 1993-07-07 | 1995-01-12 | Bosch Gmbh Robert | Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen |
DE19716220B4 (de) * | 1997-04-18 | 2007-08-23 | Robert Bosch Gmbh | Kraftstoffeinspritzeinheit für Brennkraftmaschinen |
DE19839522C1 (de) * | 1998-08-29 | 1999-12-30 | Daimler Chrysler Ag | Für eine Brennkraftmaschine vorgesehene Steckpumpe mit integriertem Magnetventil |
DE19923422C2 (de) * | 1999-05-21 | 2003-05-08 | Bosch Gmbh Robert | Elektronisches Einspritzsystem |
US6612541B2 (en) * | 2002-01-03 | 2003-09-02 | I-Con Systems, Inc. | Control valve retrofit for pneumatic plumbing fixture |
DE102013220877A1 (de) * | 2013-10-15 | 2015-04-16 | Continental Automotive Gmbh | Ventil |
CN112901584B (zh) * | 2021-03-10 | 2023-01-06 | 潍柴动力股份有限公司 | 一种电磁比例阀、流量阀及液压系统 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2697581A (en) * | 1949-02-14 | 1954-12-21 | Gen Controls Co | Electromagnetically operated valve with adjustable opening |
DE3427421A1 (de) * | 1984-07-25 | 1986-01-30 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Steuerventil fuer eine kraftstoffeinspritzvorrichtung |
US4766405A (en) * | 1987-04-14 | 1988-08-23 | Allied Corporation | Dynamic energy absorber |
GB8729087D0 (en) * | 1987-12-12 | 1988-01-27 | Lucas Ind Plc | Control valve |
-
1989
- 1989-08-30 DE DE3928613A patent/DE3928613A1/de not_active Withdrawn
-
1990
- 1990-07-26 US US07/663,925 patent/US5123626A/en not_active Expired - Lifetime
- 1990-07-26 WO PCT/DE1990/000574 patent/WO1991003641A1/de active IP Right Grant
- 1990-07-26 EP EP90910556A patent/EP0440758B1/de not_active Expired - Lifetime
- 1990-07-26 JP JP2510261A patent/JP2825649B2/ja not_active Expired - Lifetime
- 1990-07-26 DE DE9090910556T patent/DE59000698D1/de not_active Expired - Fee Related
- 1990-07-26 KR KR1019910700428A patent/KR0167111B1/ko not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9103641A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1991003641A1 (de) | 1991-03-21 |
DE3928613A1 (de) | 1991-03-07 |
US5123626A (en) | 1992-06-23 |
JP2825649B2 (ja) | 1998-11-18 |
DE59000698D1 (de) | 1993-02-11 |
KR0167111B1 (ko) | 1998-12-15 |
JPH04501593A (ja) | 1992-03-19 |
EP0440758B1 (de) | 1992-12-30 |
KR920701658A (ko) | 1992-08-12 |
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