EP1138883A2 - Gaswechselventilsteuerung für Brennkraftmaschinen mit einem mit Gasfedern ausgerüsteten elektromagnetischen Aktuator - Google Patents
Gaswechselventilsteuerung für Brennkraftmaschinen mit einem mit Gasfedern ausgerüsteten elektromagnetischen Aktuator Download PDFInfo
- Publication number
- EP1138883A2 EP1138883A2 EP00710039A EP00710039A EP1138883A2 EP 1138883 A2 EP1138883 A2 EP 1138883A2 EP 00710039 A EP00710039 A EP 00710039A EP 00710039 A EP00710039 A EP 00710039A EP 1138883 A2 EP1138883 A2 EP 1138883A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- gas
- switching
- gas springs
- yoke
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 10
- 230000005291 magnetic effect Effects 0.000 claims abstract description 22
- 238000006073 displacement reaction Methods 0.000 claims abstract description 9
- 238000013016 damping Methods 0.000 claims description 7
- 230000001133 acceleration Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000003302 ferromagnetic material Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 150000002736 metal compounds Chemical class 0.000 claims 1
- 238000010276 construction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
- F01L1/462—Valve return spring arrangements
- F01L1/465—Pneumatic arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2301/00—Using particular materials
Definitions
- the invention relates to a preamble of claim 1
- Gas exchange valve control for internal combustion engines with one with gas springs equipped electromagnetic actuator, one with the gas exchange valve Armature in drive connection between stroke-spaced switching magnets is arranged oscillating against restoring forces of the gas springs, the means of of the armature, which serves as a separating piston, separate gas springs depending on Gas metering valves controlled by load areas of the internal combustion engine and gas release valves are used to adjust adapted spring characteristics and also a damped stop of the separating piston or the armature on the respective Switching magnet.
- Such an actuator is the subject of the German patent application P 100 03 116 with the objective of simple construction depending on load ranges to achieve spring characteristics that are variably adapted to the internal combustion engine, and furthermore a controlled one independently of the respective spring characteristic To achieve cushioning.
- the invention has for its object the generic actuator both in its mechanical structure as well as its electromagnetic training to improve in such a way that the energy consumption is reduced and the anchor is increased Magnetic force is attracted.
- each switching magnet a coil in a relative to a guide shaft of the armature or the Gas exchange valve has a core symmetrically laminated core, and each core with a circumferential groove provided adjacent to the end face on the anchor side arranged coil is flush with the outside for flat support one enclosing the switching magnets including the armature displacement Yokes that are essentially centered between the switching magnets on the armature the respective stopping position causing an increased acceleration force wearing.
- each switching magnet advantageously achieves a shortened magnetic circuit, wherein the shortened magnetic circuit at least in the initial phase of acceleration the anchor from the holding position on one of the switching magnets the magnetic Resistance in the magnetic circuit due to only one air gap is essential is reduced. This means that this can be achieved regardless of the gas pressure at the armature accelerated higher, which is advantageous in particular to achieve high engine speeds is advantageous.
- the Shortened magnetic circuit according to the invention of each switching magnet it is special advantageous to execute their cores in a centrally symmetrical manner to lower the Scattering losses or to reduce eddy current losses, such as this is described and shown in DE 35 00 530 A1.
- a gas exchange valve control 1, not shown, for not shown Internal combustion engines comprises an actuator 2 with gas springs 3 and 4, one with the gas exchange valve 5 in armature connection 6 between stroke-spaced Switching magnets 7 and 8 against restoring forces of the gas springs 3 and 4 is arranged oscillating. Furthermore, those formed by means of the separating piston serve Armature 6 separate gas springs 3 and 4 depending on load ranges the internal combustion engine controlled gas metering valves 9 and 9 'and Gas release valves 10, 10 'for determining adapted spring characteristics and further a damped stop of the separating piston or armature 6 on the respective Shift solenoids 7, 8.
- the armature 6 free of the gas springs 3, 4 is designed to be separating and in the respective holding position on a switching magnet 7, 8 by means of an interposed rubber-elastic element 11 limited a damping chamber 12.
- each switching magnet 7, 8 has one Coil 13 in a relative to a guide shaft 14 of the armature 6 or the gas exchange valve 5 core 7 ', 8' with a central symmetry, each core 7 ', 8 'with a circumferential groove provided adjacent to the end face 15 on the anchor side 16 arranged coil 13 is formed flush on the outside flat support of the solenoids 7 and 8 including an armature displacement 17 enclosing yokes 18, which is substantially centered between the Switching magnets 7, 8 an increased on armature 6 in the respective holding position Accelerating force device 19 carries.
- the device 19 is inward with free access to the anchor 6 directed projection 20 on a cylindrical switching magnet 7, 8 enclosing Yoke 18 made of magnetizable, low hysteresis material, the Projection 20 with its free inner peripheral surface 21 and with flush, non-magnetizable cover rings 22 to both switching magnets 7, 8 den the gas springs 3, 4 encompassing armature displacement 17, the inner circumferential surface being limited 21 of the projection 20 as an entry / exit surface extending close to the anchor Serves magnetic lines.
- the projection 20 arranged according to the invention for each of the switching magnets 7 and 8, a shortened magnetic circuit is achieved in the The initial phase of the anchor acceleration near the anchor is only through an air gap trending magnetic lines.
- the wall thickness "s" of the yoke 18 designed as a cylindrical housing as a section of a magnetic circuit corresponding to the magnetic line density in the cores 7 'and 8', which are laminated in the center symmetry, the projection 20 a thickness "d" corresponding to the yoke wall thickness "s” or the inner peripheral surface 21 of the projection 20 has a height corresponding to the wall thickness "s".
- This configuration ensures that for those in the yoke 18 and Projection 20 extending magnetic lines given by changes in cross section magnetic resistances are avoided.
- the yoke 18 is preferably out a ferromagnetic material. They are further on both sides of the lead 20 arranged cover rings 22 made of a non-magnetizable Light metal connection made to those emerging from the inner peripheral surface 21 or bundled into these entering magnetic lines in the magnetic circuit to have blurred.
- each switching magnet 7, 8 has one on the coil side assigned in the housing-like yoke 18 gas-tight end plate 23, which in an anchor-side groove 24 carries the rubber-elastic element 11 and with a concentric Recess 25 forms a section of the damping chamber 12.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
Description
- Figur 1
- einen erfindungsgemäßen Aktuator im Querschnitt, und
- Figur 2
- eine Draufsicht eines Schaltmagneten mit zentralsymetrisch geblechtem Kern gemäß der Linie II-II in Figur 1.
Claims (5)
- Gaswechselventil-Steuerung für Brennkraftmaschinen mit einem mit Gasfedern ausgerüsteten elektromagnetischen Aktuator,dadurch gekennzeichnet,bei dem ein mit dem Gaswechselventil (5) in Antriebsverbindung stehender Anker (6) zwischen hubbeabstandeten Schaltmagneten (7, 8) gegen Rückstellkräfte der Gasfedern (3, 4) oszillierend angeordnet ist, wobeidie mittels des als Trennkolben dienenden Ankers (6) getrennten Gasfedern (3, 4) über in Abhängigkeit von Lastbereichen der Brennkraftmaschine gesteuerte Gaszumess-Ventile (9, 9') und Gasablass-Ventile (10, 10') der Einstellung angepasster Federkennlinien dienen und fernereines gedämpften Anschlages des Trennkolbens bzw. des Ankers (6) am jeweiligen Schaltmagneten (7, 8),dass der Anker (6) gleitdichtungsfrei die Gasfedern (3, 4) trennend ausgebildet ist, undin der jeweiligen Halteposition an einem Schaltmagneten (7, 8) mittels eines zwischengeschalteten gummielastischen Elementes (11) eine Dämpfungskammer (12) begrenzt, wobei fernerjeder Schaltmagnet (7, 8) eine Spule (13) in einem relativ zu einem Führungsschaft (14) des Ankers (6) oder des Gaswechselventils (5) zentralsymetrisch geblechten Kern (7', 8') aufweist, undjeder Kern (7', 8') mit einer in einer der ankerseitigen Stirnseite (15) benachbart vorgesehenen Umfangsnut (16) angeordneten Spule (13) außenumfänglich bündig ausgebildet ist zur flächigen Auflage eines die Schaltmagnete (7, 8) einschließlich eines Anker-Hubraumes (17) umschließenden Joches (18), dasim wesentlichen mittig zwischen den Schaltmagneten (7, 8) eine am Anker (6) in der jeweiligen Halteposition eine erhöhte Beschleunigungskraft bewirkende Einrichtung (19) trägt.
- Aktuator nach Anspruch 1, dadurch gekennzeichnet,dass die Einrichtung (19) ein mit Freigang zum Anker (6) einwärts gerichteter Vorsprung (20) an einem zylindrische Schaltmagnete (7, 8) umschließenden Joch (18) aus magnetisierbarem, hysteresearmen Material ist, wobeider Vorsprung (20) mit seiner freien Innenumfangsfläche (21) und mit bündig anschließenden, nicht magnetisierbaren Abdeckringen (22) zu beiden Schaltmagneten (7, 8) den die Gasfedern (3, 4) umfassenden Anker-Hubraum (17) begrenzt, unddie Innenumfangsfläche (21) als Ein-/Austrittsfläche ankernah verlaufender Magnetlinien dient.
- Aktuator nach Anspruch 2, dadurch gekennzeichnet,dass die Wandstärke (s) des als zylindrisches Gehäuse gestalteten Joches (18) als Abschnitt eines magnetischen Kreises entsprechend der Magnetliniendichte in den zentralsymetrisch geblechten Kernen (7', 8') gewählt ist unddass der Vorsprung (20) eine der Joch-Wandstärke (s) entsprechende Dicke (d) aufweist.
- Aktuator nach Anspruch 2 und 3, dadurch gekennzeichnet,dass das Joch (18) aus einem ferromagnetischen Material gebildet ist, unddass die Abdeckringe (22) beiderseits des Vorsprunges (20) aus einer nicht magnetisierbaren Leichtmetall-Verbindung sind.
- Aktuator nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet,dass jedem Schaltmagneten (7, 8) spulenseitig eine im gehäuseartigen Joch (18) gasdicht angeordnete Stirnplatte (23) zugeordnet ist, diein einer ankerseitigen Nut (24) das gummielastische Element (11) trägt und mit einer konzentrischen Vertiefung (25) einen Abschnitt der Dämpfungskammer bildet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10008991 | 2000-02-25 | ||
| DE10008991A DE10008991A1 (de) | 2000-02-25 | 2000-02-25 | Gaswechselventil-Steuerung für Brennkraftmaschinen mit einem mit Gasfedern ausgerüsteten elektromagnetischen Aktuator |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1138883A2 true EP1138883A2 (de) | 2001-10-04 |
| EP1138883A3 EP1138883A3 (de) | 2001-12-05 |
| EP1138883B1 EP1138883B1 (de) | 2005-03-09 |
Family
ID=7632458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00710039A Expired - Lifetime EP1138883B1 (de) | 2000-02-25 | 2000-12-13 | Gaswechselventilsteuerung für Brennkraftmaschinen mit einem mit Gasfedern ausgerüsteten elektromagnetischen Aktuator |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6415751B2 (de) |
| EP (1) | EP1138883B1 (de) |
| DE (2) | DE10008991A1 (de) |
| ES (1) | ES2234553T3 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2382378B (en) * | 2001-11-22 | 2003-12-24 | Keith Gordon Hall | Electromagnetic valve actuator |
| JP2003214126A (ja) * | 2002-01-23 | 2003-07-30 | Toyota Motor Corp | 電磁駆動弁の制御装置 |
| WO2004044390A1 (en) * | 2002-11-12 | 2004-05-27 | Duckdive Pty. Limited | High speed solenoid valve |
| DE102022112933A1 (de) | 2022-05-23 | 2023-11-23 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verbrennungsmotor-Gaswechsel-Ventilanordnung |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3311250C2 (de) * | 1983-03-28 | 1985-08-01 | FEV Forschungsgesellschaft für Energietechnik und Verbrennungsmotoren mbH, 5100 Aachen | Vorrichtung zur elektromagnetischen Betätigung eines Gaswechselventils für Verdrängungsmaschinen |
| US4779582A (en) * | 1987-08-12 | 1988-10-25 | General Motors Corporation | Bistable electromechanical valve actuator |
| US4883025A (en) * | 1988-02-08 | 1989-11-28 | Magnavox Government And Industrial Electronics Company | Potential-magnetic energy driven valve mechanism |
| JP3106890B2 (ja) * | 1995-01-11 | 2000-11-06 | トヨタ自動車株式会社 | 内燃機関の弁駆動装置 |
| DE19651846B4 (de) * | 1996-12-13 | 2005-02-17 | Fev Motorentechnik Gmbh | Verfahren zur elektromagnetischen Betätigung eines Gaswechselventils ohne Polflächenberührung |
| DE19707810C1 (de) * | 1997-02-27 | 1998-05-07 | Daimler Benz Ag | Vorrichtung für eine elektromagnetische Ventilsteuerung |
| EP0870906B1 (de) * | 1997-04-08 | 2002-06-12 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Elektromagnetischer Aktuator zur Steuerung eines Gaswechsel-Hubventils einer Brennkraftmaschine |
| DE19725218C2 (de) * | 1997-06-15 | 2000-11-02 | Daimler Chrysler Ag | Vorrichtung zur Betätigung eines Gaswechselventiles für eine Brennkraftmaschine |
| DE19733186A1 (de) * | 1997-07-31 | 1999-02-04 | Fev Motorentech Gmbh & Co Kg | Elektromagnetisch betätigbares Gaswechselventil für eine Kolbenbrennkraftmaschine |
| JPH11311112A (ja) * | 1998-03-14 | 1999-11-09 | Fev Motorentechnik Gmbh & Co Kg | 空気戻しバネを備えたピストン内燃機関用の電磁操作可能なガス交換弁 |
| DE19829858A1 (de) * | 1998-07-05 | 2000-01-13 | Bayerische Motoren Werke Ag | Kombinierter elektromagnetischer/pneumatischer Aktuator zur Steuerung eines Hubventils, insbesondere Gaswechselventil einer Brennkraftmaschine |
| JP2000034912A (ja) * | 1998-07-17 | 2000-02-02 | Nissan Motor Co Ltd | 内燃機関用動弁装置及びその制御方法 |
| DE19838118A1 (de) * | 1998-08-21 | 2000-02-24 | Bayerische Motoren Werke Ag | Elektromagnetischer Aktuator für ein Brennkraftmaschinen-Hubventil |
-
2000
- 2000-02-25 DE DE10008991A patent/DE10008991A1/de not_active Withdrawn
- 2000-12-13 EP EP00710039A patent/EP1138883B1/de not_active Expired - Lifetime
- 2000-12-13 ES ES00710039T patent/ES2234553T3/es not_active Expired - Lifetime
- 2000-12-13 DE DE50009722T patent/DE50009722D1/de not_active Expired - Fee Related
-
2001
- 2001-02-08 US US09/778,795 patent/US6415751B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE10008991A1 (de) | 2001-08-30 |
| ES2234553T3 (es) | 2005-07-01 |
| US20010017113A1 (en) | 2001-08-30 |
| EP1138883B1 (de) | 2005-03-09 |
| DE50009722D1 (de) | 2005-04-14 |
| US6415751B2 (en) | 2002-07-09 |
| EP1138883A3 (de) | 2001-12-05 |
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