DE102009056797A1 - Hydraulically and/or pneumatically operated actuator for controlling gas exchange lifting valve in internal combustion engine, has valve spring moving hydraulic medium toward control area in control-conditioned manner by control piston - Google Patents
Hydraulically and/or pneumatically operated actuator for controlling gas exchange lifting valve in internal combustion engine, has valve spring moving hydraulic medium toward control area in control-conditioned manner by control piston Download PDFInfo
- Publication number
- DE102009056797A1 DE102009056797A1 DE102009056797A DE102009056797A DE102009056797A1 DE 102009056797 A1 DE102009056797 A1 DE 102009056797A1 DE 102009056797 A DE102009056797 A DE 102009056797A DE 102009056797 A DE102009056797 A DE 102009056797A DE 102009056797 A1 DE102009056797 A1 DE 102009056797A1
- Authority
- DE
- Germany
- Prior art keywords
- control
- valve
- hydraulic medium
- gas exchange
- actuator
- 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.)
- Withdrawn
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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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
- F01L9/16—Pneumatic means
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- 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
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Die Erfindung bezieht sich nach dem Oberbegriff des Patentanspruches 1 auf einen hydraulischen Aktuator, insbesondere zur Steuerung von Gaswechselventilen bei Brennkraftmaschinen, wobei die beiden Steuerkammern des Aktuators, die durch den Steuerkolben getrennt werden, über eine permanent und richtungsgleich hochtourig drehende Hochdruckpumpe in Strömungsverbindung stehen und über die jeweils zugehörigen Leitungen in ein Hydrauliksystem mit Magnetventilsteuerungen eingebunden sind, wobei die Ventilfeder eine systemische Rückstellfunktion des Steuerkolbens übernimmt. Bei systemischem Überdruck bildet die Hochdruckpumpe mit einem Überdruckventil einen Bypass, um jederzeit wieder Hydrauliköl zur schnellen Aktuatorsteuerung in ausreichendem Maße zur Verfügung stellen zu können.The invention relates according to the preamble of claim 1 to a hydraulic actuator, in particular for controlling gas exchange valves in internal combustion engines, wherein the two control chambers of the actuator, which are separated by the control piston, via a permanently and directionally high-speed rotating high-pressure pump in flow communication and about the respective associated lines are integrated into a hydraulic system with solenoid valve controls, wherein the valve spring takes over a systemic reset function of the control piston. At systemic overpressure, the high-pressure pump forms a bypass with a pressure relief valve in order to be able to provide sufficient hydraulic oil for rapid actuator control again at any time.
Stand der TechnikState of the art
Der Steuerung von Ladungswechselventilen kommt für die Bestimmung des Wirkungsgrades von Brennkraftmaschinen große Bedeutung zu.The control of charge exchange valves is of great importance for the determination of the efficiency of internal combustion engines.
Neben Nockenwellensteuerungen werden auch elektrohydraulische Ventilsteuerungen eingesetzt. Elektrohydraulische Ventilsteuerungen bieten die Möglichkeit einer teilvariablen bzw. vollvariablen Ventilsteuerung, so dass eine Optimierung des Gaswechsels und somit eine Steigerung des motorischen Wirkungsgrades bei unterschiedlichen motorischen Anforderungen einer Brennkraftmaschine möglich ist.In addition to camshaft controls and electro-hydraulic valve controls are used. Electrohydraulic valve controls offer the possibility of a partially variable or fully variable valve control, so that an optimization of the gas exchange and thus an increase of the engine efficiency with different engine requirements of an internal combustion engine is possible.
Die elektrohydraulische Ventilsteuerung umfasst einen hydraulisch zu betätigenden Aktuator. Über diverse Drucksteuerungen des Hydraulikmediums lässt sich der Aktuator betätigen. Die Drucksteuerung erfolgt hierbei über die in den Hydraulikkreislauf eingebundenen Magnetventile. Um optimale Gaswechsel zu erreichen, sind hohe Schaltgeschwindigkeiten mit großen Druckmediendurchsätzen des Aktuators notwendig. Auch ein möglichst weiches Aufsitzen des Ventiltellers auf den Ventilsitzring und daraus resultierende längere Standzeiten bei gleichzeitig geringerer Geräuschentwicklung sind nach wie vor Entwicklungsziele. Weitere Entwicklungsziele sind hohe Standzeiten, ein grundsätzlich geringer Durchsatz von Hydrauliköl bei möglichst viskositätsunabhängigen Steuerungsmöglichkeiten, ein geringer Bauteileaufwand und günstige wirtschaftliche Gesamtkosten.The electro-hydraulic valve control comprises a hydraulically actuated actuator. The actuator can be actuated via various pressure controls of the hydraulic medium. The pressure control takes place here via the integrated in the hydraulic circuit solenoid valves. In order to achieve optimum gas exchange, high switching speeds with high pressure medium throughputs of the actuator are necessary. Even the softest possible seating of the valve disk on the valve seat ring and the resulting longer service life with simultaneously lower noise development are still development goals. Further development goals are long service life, a basically low throughput of hydraulic oil with control options that are as independent of viscosity as possible, low component expenditure and favorable overall economic costs.
Der Erfindung liegt die Aufgabe zugrunde eine Ventilsteuerung vorzuschlagen, die den Stand der zuvor genannten Entwicklungsziele weiter führt und entsprechende Verbesserungen beinhaltet.The invention has for its object to propose a valve control, which continues the state of the aforementioned development goals and includes corresponding improvements.
Dazu ist erfindungsgemäß vorgesehen, dass aus Gründen der vollvariablen Steuerungsmöglichkeit die Steuerkammer (
Die Erfindung ist anhand eines in der Zeichnung schematisch dargestellten Ausführungsbeispiels beschrieben. Es zeigt:The invention is described with reference to an embodiment schematically illustrated in the drawing. It shows:
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Aktuatoractuator
- 22
- Hochdruckpumpehigh pressure pump
- 33
- Förderrichtungconveying direction
- 44
- Steuerkammercontrol chamber
- 55
- Steuerraumcontrol room
- 66
- Steuerkolbenspool
- 77
- Leitungmanagement
- 88th
- Hydraulikmediumhydraulic medium
- 99
- Steuerraumcontrol room
- 1010
- Magnetventilmagnetic valve
- 1111
- Widerlagerabutment
- 1212
- Ventilfedervalve spring
- 1313
- Schaftshaft
- 1414
- Hubventilglobe valve
- 1515
- Ventilsitzvalve seat
- 1616
- Magnetventilmagnetic valve
- 1717
- Leitungmanagement
- 1818
- ÜberdruckventilPressure relief valve
- 1919
- Leitungmanagement
- 2020
- Leitungmanagement
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009056797A DE102009056797A1 (en) | 2009-12-03 | 2009-12-03 | Hydraulically and/or pneumatically operated actuator for controlling gas exchange lifting valve in internal combustion engine, has valve spring moving hydraulic medium toward control area in control-conditioned manner by control piston |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009056797A DE102009056797A1 (en) | 2009-12-03 | 2009-12-03 | Hydraulically and/or pneumatically operated actuator for controlling gas exchange lifting valve in internal combustion engine, has valve spring moving hydraulic medium toward control area in control-conditioned manner by control piston |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009056797A1 true DE102009056797A1 (en) | 2011-06-09 |
Family
ID=43972222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009056797A Withdrawn DE102009056797A1 (en) | 2009-12-03 | 2009-12-03 | Hydraulically and/or pneumatically operated actuator for controlling gas exchange lifting valve in internal combustion engine, has valve spring moving hydraulic medium toward control area in control-conditioned manner by control piston |
Country Status (1)
Country | Link |
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DE (1) | DE102009056797A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016533451A (en) * | 2013-10-16 | 2016-10-27 | フリーバルブ・アクチボラグ | Combustion engine and gas handling system for pneumatic operation of valve actuators |
CN111502793A (en) * | 2020-05-11 | 2020-08-07 | 江苏科技大学 | Electromagnetic direct-drive pump control exhaust valve system of marine low-speed diesel engine |
-
2009
- 2009-12-03 DE DE102009056797A patent/DE102009056797A1/en not_active Withdrawn
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016533451A (en) * | 2013-10-16 | 2016-10-27 | フリーバルブ・アクチボラグ | Combustion engine and gas handling system for pneumatic operation of valve actuators |
EP3058235A4 (en) * | 2013-10-16 | 2017-05-31 | Freevalve AB | Combustion engine and gas handling system for pneumatic operation of a valve actuator |
CN107178399A (en) * | 2013-10-16 | 2017-09-19 | 弗瑞瓦勒夫股份公司 | Internal combustion engine and the pneumatically-operated gas handling system for valve actuator |
US10077689B2 (en) | 2013-10-16 | 2018-09-18 | Freevalve Ab | Combustion engine and gas handling system for pneumatic operation of a valve actuator |
CN107178399B (en) * | 2013-10-16 | 2019-10-01 | 弗瑞瓦勒夫股份公司 | Internal combustion engine and pneumatically-operated gas handling system for valve actuator |
CN111502793A (en) * | 2020-05-11 | 2020-08-07 | 江苏科技大学 | Electromagnetic direct-drive pump control exhaust valve system of marine low-speed diesel engine |
CN111502793B (en) * | 2020-05-11 | 2021-04-23 | 江苏科技大学 | Electromagnetic direct-drive pump control exhaust valve system of marine low-speed diesel engine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20120703 |