DE102004007323A1 - Pressure regulator for automotive oil pump has first piston operating in conjunction with a second variable-pressure piston - Google Patents
Pressure regulator for automotive oil pump has first piston operating in conjunction with a second variable-pressure piston Download PDFInfo
- Publication number
- DE102004007323A1 DE102004007323A1 DE200410007323 DE102004007323A DE102004007323A1 DE 102004007323 A1 DE102004007323 A1 DE 102004007323A1 DE 200410007323 DE200410007323 DE 200410007323 DE 102004007323 A DE102004007323 A DE 102004007323A DE 102004007323 A1 DE102004007323 A1 DE 102004007323A1
- Authority
- DE
- Germany
- Prior art keywords
- piston
- control
- pressure
- speed
- spring
- 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- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
- F04C14/185—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by varying the useful pumping length of the cooperating members in the axial direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/05—Speed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Retarders (AREA)
Abstract
Description
Durch die Verwendung von Ölpumpen mit veränderlichen Fördermengen, sog. Regelölpumpen, für die Schmierölversorgung von Verbrennungsmotoren werden aufgrund reduzierter Ölpumpenantriebsleistungen Vorteile im Kraftstoffverbrauch erzielt. Diese Vorteile werden insbesondere durch eine drehzahlabhängige Druckregelung der Regelölpumpe entsprechend dem auch drehzahlabhängigen Öldruckbedarf eines Verbrennungsmotors erzielt, wobei der Öldruck durch eine entsprechend angepasste Fördermenge der Regelölpumpe eingeregelt wird.By the use of oil pumps with changeable Flow rates, so-called control oil pumps, for the lubricating oil supply Internal combustion engines are due to reduced oil pump drive performance Benefits in fuel consumption achieved. These benefits will be particular by a speed-dependent Pressure control of the control oil pump accordingly the speed-dependent oil pressure requirement achieved by an internal combustion engine, the oil pressure by a corresponding adapted flow rate the regular oil pump is adjusted.
Die deutsche Patentanmeldung AZ 10357619.3 beschreibt eine Regelölpumpe, deren Öldruck im Wesentlichen von der Betriebsdrehzahl bestimmt wird. Hierzu wird die drehzahlabhängig veränderliche Fliehkraft einer in einer Radialbohrung eines rotierenden Förderrades befindlichen Ölsäule genutzt, um mit dem daraus resultierenden Fliehdruck einen die Öldruckregelung vornehmenden Regelkolben zu beaufschlagen. Für die Erzeugung einer ausreichend hohen, fliehdruckabhängigen Regelkraft weist der Regelkolben einen relativ großflächigen Differenzdruckkolben auf, der fest mit dem Regelkolben verbunden ist.The German patent application AZ 10357619.3 describes a control oil pump, their oil pressure is essentially determined by the operating speed. For this purpose is the speed dependent variable Centrifugal force in a radial bore of a rotating conveyor wheel used oil column used with the resulting centrifugal pressure to the oil pressure control to act on adjusting control piston. For the generation of a sufficient high, centrifugal pressure dependent Regulating force, the control piston has a relatively large differential pressure piston on, which is firmly connected to the control piston.
Während einerseits durch den mit einem Differenzdruckkolben ausgebildeten Regelkolben auf vorteilhaft einfache Weise eine drehzahlabhängige Öldruckregelung ermöglicht wird, tritt jedoch andererseits aufgrund der erforderlichen Großflächigkeit des Differenzdruckkolbens bei Regelvorgängen mit entsprechender Hubbewegung des Regelkolbens eine nachteilige Bedämpfung der Hubbewegung auf. Hierdurch wird eine schnelle Öldruckregelung behindert, wodurch der Öldruck in auftretenden Druckschwankungen deutlich von seinem Sollwert abweichen kann.While on the one hand through the control piston formed with a differential pressure piston in a simple manner, a speed-dependent oil pressure control is possible, on the other hand, due to the required large area the differential pressure piston during control operations with corresponding stroke the control piston on an adverse damping of the lifting movement. As a result, a fast oil pressure control impeded, causing the oil pressure can deviate significantly from its nominal value in occurring pressure fluctuations.
Der Erfindung liegt die Aufgabe zugrunde, für eine Regelölpumpe mit einer fliehdruckbedingt drehzahlabhängigen Öldruckregelung zu schaffen, die ein stabiles Regelungsverhalten aufweist.Of the Invention is based on the object for a control oil pump to create a speed-dependent oil-pressure control dependent on centrifugal pressure, which has a stable control behavior.
Diese Aufgabe wird erfindungsgemäß in einfacher Weise dadurch gelöst, dass ein die Öldruckregelung vornehmender Regelkolben einen Differenzdruckkolben aufweist, der auf dem Regelkolben axial beweglich geführt ist, wobei die vom Fliehdruck am Differenzdruckkolben erzeugte Zusatzkraft über eine Feder auf den Regelkolben übertragen wird.These The object is achieved according to the invention in a simple Way solved by that one the oil pressure control distinguished control piston has a differential pressure piston, the is guided axially movable on the control piston, wherein the centrifugal pressure transmitted to the differential pressure piston generated additional force via a spring on the control piston becomes.
Durch diese elastische Verbindung zum Differenzdruckkolben kann der Regelkolben nahezu ungedämpft die Öldruckregelung vornehmen.By This elastic connection to the differential pressure piston can be the control piston almost undamped the oil pressure control make.
Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung von in Zeichnungen schematisch dargestellten Ausführungsbeispielen. Es zeigen:details The invention will become apparent from the following description of in drawings schematically illustrated embodiments. Show it:
Die
Ein
in einem Pumpengehäuse
Dem
mit steigender Drehzahl des Verbrennungsmotors zunehmenden Öldruckbedarf
wird durch eine auf den Regelkolben
Durch
die erfindungsgemäß elastische Übertragung
der Zusatzkraft des Differenzdruckkolbens
Ein
für den
Differenzdruckkolben
Durch
die drehzahlabhängige
Fliehdruckregelung ist der Öldruck
der Regelölpumpe
weitgehend dem Öldruckbedarf
eines zu versorgenden Verbrennungsmotors angepasst, so dass durch
die Öldruckminimierung
entsprechende Antriebsleistungsvorteile resultieren. Bei in Sonderfällen erhöhtem Öldruckbedarf
des Verbrennungsmotors, beispielsweise für eine schnelle Verstellung
hydraulischer Nockenwellenversteller, kann durch ein von einem Motorsteuergerät angesteuertes
Magnetventil
Alternativ
zu
Die
Verschiebeeinheit
Der
Regeldruck wird in bekannter Weise von einem in Laufbolzen
Das
Stützrohr
Im
Federkolben
Um
eine einwandfreie Funktion der Regelung zu erreichen, müssen die
Hohlräume
zwischen den im Laufbolzen
Die erfindungsgemäß elastische Ankoppelung eines fliehdruckbeaufschlagten Differenzdruckkolbens an den Regelkolben einer Regelölpumpe ermöglicht eine stabile, drehzahlabhängige Öldruckregelung.The according to the invention elastic Coupling of a centrifugally pressurized differential pressure piston to the control piston of a control oil pump allows a stable, speed-dependent oil pressure control.
Claims (7)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410007323 DE102004007323A1 (en) | 2004-02-14 | 2004-02-14 | Pressure regulator for automotive oil pump has first piston operating in conjunction with a second variable-pressure piston |
EP04799011A EP1730405A1 (en) | 2003-12-10 | 2004-11-29 | Engine speed-dependent pressure regulation of oil pumps |
US10/581,148 US20070111855A1 (en) | 2003-12-10 | 2004-11-29 | Engine speed-dependent pressure regulation of oil pumps |
PCT/IB2004/003910 WO2005057013A1 (en) | 2003-12-10 | 2004-11-29 | Engine speed-dependent pressure regulation of oil pumps |
JP2006543638A JP2007514097A (en) | 2003-12-10 | 2004-11-29 | Oil pump speed dependent pressure control |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410007323 DE102004007323A1 (en) | 2004-02-14 | 2004-02-14 | Pressure regulator for automotive oil pump has first piston operating in conjunction with a second variable-pressure piston |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004007323A1 true DE102004007323A1 (en) | 2005-08-04 |
Family
ID=34716740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410007323 Withdrawn DE102004007323A1 (en) | 2003-12-10 | 2004-02-14 | Pressure regulator for automotive oil pump has first piston operating in conjunction with a second variable-pressure piston |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102004007323A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1942277A2 (en) | 2007-01-03 | 2008-07-09 | Dieter Dipl.-Ing. Voigt | Dynamic pressure control for hydraulic pumps |
DE102008006861A1 (en) | 2008-01-31 | 2008-12-11 | Voigt, Dieter, Dipl.-Ing. | Pressure changeover switch, especially for regulating combustion engine lubrication system oil pump, has control pressure line with first choke, branch line to pressure sink with second choke and/or control device with adjustable throughput |
DE102007039589A1 (en) | 2007-08-22 | 2009-02-26 | Voigt, Dieter, Dipl.-Ing. | Regular oil pump with adjustment-dependent oil pressure control |
DE102011104049A1 (en) * | 2011-06-11 | 2012-12-27 | Volkswagen Aktiengesellschaft | pump |
CN105041407A (en) * | 2015-06-14 | 2015-11-11 | 张颖 | Executing mechanism with differential pressure force and spring force synchronous acting |
-
2004
- 2004-02-14 DE DE200410007323 patent/DE102004007323A1/en not_active Withdrawn
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1942277A2 (en) | 2007-01-03 | 2008-07-09 | Dieter Dipl.-Ing. Voigt | Dynamic pressure control for hydraulic pumps |
DE102007039589A1 (en) | 2007-08-22 | 2009-02-26 | Voigt, Dieter, Dipl.-Ing. | Regular oil pump with adjustment-dependent oil pressure control |
WO2009024109A2 (en) * | 2007-08-22 | 2009-02-26 | Dieter Voigt | Control oil pump having travel-dependent oil pressure control |
WO2009024109A3 (en) * | 2007-08-22 | 2009-04-23 | Dieter Voigt | Control oil pump having travel-dependent oil pressure control |
DE102008006861A1 (en) | 2008-01-31 | 2008-12-11 | Voigt, Dieter, Dipl.-Ing. | Pressure changeover switch, especially for regulating combustion engine lubrication system oil pump, has control pressure line with first choke, branch line to pressure sink with second choke and/or control device with adjustable throughput |
DE102011104049A1 (en) * | 2011-06-11 | 2012-12-27 | Volkswagen Aktiengesellschaft | pump |
CN105041407A (en) * | 2015-06-14 | 2015-11-11 | 张颖 | Executing mechanism with differential pressure force and spring force synchronous acting |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAV | Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1 | ||
8139 | Disposal/non-payment of the annual fee |