DE102008006861A1 - 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 - Google Patents
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 Download PDFInfo
- Publication number
- DE102008006861A1 DE102008006861A1 DE200810006861 DE102008006861A DE102008006861A1 DE 102008006861 A1 DE102008006861 A1 DE 102008006861A1 DE 200810006861 DE200810006861 DE 200810006861 DE 102008006861 A DE102008006861 A DE 102008006861A DE 102008006861 A1 DE102008006861 A1 DE 102008006861A1
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- oil
- control
- line
- oil pump
- 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- Withdrawn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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M1/00—Pressure lubrication
- F01M1/16—Controlling lubricant pressure or quantity
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
Die Erfindung betrifft Ölpumpen mit verstellbaren Fördermengen, die als sog. Regelölpumpen insbesondere für die Schmierölversorgung von Verbrennungsmotoren verwendet werden. Durch die Regelung der Fördermenge und insbesondere auch des Förderdruckes werden für Verbrennungsmotoren Vorteile im Kraftstoffverbrauch bzw. auch in der CO2-Abgasemission erzielt.The invention relates to oil pumps with adjustable flow rates, which are used as so-called. Regular oil pumps in particular for the lubricating oil supply of internal combustion engines. By regulating the flow rate and in particular the delivery pressure benefits for fuel consumption and in the CO 2 emission are achieved for internal combustion engines.
Aus
der
Die
Die
Anhebung des Öldruckes nach der
Bei
konstanter Anhebung des Öldruckes nach der
Der Erfindung liegt die Aufgabe zugrunde, für Regelölpumpen eine einfache Möglichkeit zur Anhebung des Öldruckes zu schaffen, ohne die Funktion und die Vorteile von Regelölpumpen aufzugeben.Of the Invention is based on the object for control oil pumps a simple way to increase the oil pressure to create without the function and benefits of control oil pumps give up.
Diese Aufgabe wird erfindungsgemäß für Regelölpumpen entsprechend Anspruch 1 in einfacher Weise dadurch gelöst, dass bei erforderlicher Anhebung des Öldruckes in der Hauptölleitung der Öldruck nicht in voller Höhe, sondern im Druckniveau reduziert über eine Steuerdruckleitung zur Regelung an die Regelölpumpe zurückgeführt wird. Hierzu weist die Steuerdruckleitung eine erste Drossel und danach stromab zur Regelölpumpe eine Abzweigleitung mit einer zweiten Drossel zur drucklosen Umgebung auf, wobei die Wirkung der zweite Drossel verstellbar ist. Im einfachsten Fall ist in der Abzweigleitung vor oder hinter der zweite Drossel ein Magnetventil angeordnet, das den Leckageölstrom der Abzweigleitung entweder zu oder abschaltet. Bei geschlossenem Magnetventil wirkt der Öldruck der Hauptleitung über die Steuerdruckleitung effektiv ohne Druckverlust der ersten Drossel, die keinen nennenswerten Ölstrom aufweist, als Steuerdruck an der Regelölpumpe. Bei geöffnetem Magnetventil fließt jedoch über die Abzweigleitung ein bestimmter Leckageölstrom zur Umgebung, wobei sich zwischen den beiden Drosseln abhängig von der Drosselwirkung der einzelnen Drosseln ein bestimmter Druck, beispiels weise bei gleichgroßen Drosseln etwa der halbe Öldruck als Steuerdruck für die Regelung einstellt. Ein die Regelung der Regelölpumpe vornehmender Regelkolben arbeitet prinzipiell als Drucksensor und versucht immer den an ihm wirkenden Steuerdruck entsprechend seiner Auslegung auf den Soll-Steuerdruck einzuregeln. Er kompensiert also eine Abweichung des Steuerdruckes durch Fördermengenanpassung bis zum Erreichen des ursprünglichen Soll-Steuerdruckes, so dass der durch das geöffnete Magnetventil an der ersten Drossel erzeugte Druckabfall durch eine erfolgende Fördermengenerhöhung zu einem entsprechend um den Druckabfall höheren Öldruck in der Hauptölleitung führt.This object is achieved according to the invention for control oil pumps according to claim 1 in a simple manner that is reduced at the required increase in the oil pressure in the main oil line not the full oil pressure, but reduced in pressure level via a control pressure line for control to the control oil pump. For this purpose, the control pressure line to a first throttle and then downstream of the control oil pump on a branch line with a second throttle to the pressureless environment, wherein the effect of the second throttle is adjustable. In the simplest case, a solenoid valve is arranged in the branch line in front of or behind the second throttle, which either switches the leakage oil flow of the branch line on or off. When the solenoid valve is closed, the oil pressure of the main line via the control pressure line effectively acts as a control pressure on the control oil pump without pressure loss of the first throttle, which has no significant oil flow. When the solenoid valve is open, however, flows through the branch line a certain leakage oil flow to the environment, with a certain pressure between the two throttles depending on the throttling effect of the individual throttles, example, with equal size throttles about half the oil pressure as the control pressure for the control adjusts. A regulating piston regulating the regulating oil pump operates in principle as a pressure sensor and always attempts to regulate the control pressure acting on it according to its design to the desired control pressure. Thus, it compensates a deviation of the control pressure by adjusting the flow rate until reaching the original desired control pressure, so that the pressure drop generated by the open solenoid valve at the first throttle leads by a successful increase in delivery to a correspondingly higher by the pressure drop oil pressure in the main oil line.
Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung und aus den in Figuren schematisch dargestellten Ausführungsbeispielen. Es zeigen:details The invention will become apparent from the following description and from the embodiments schematically illustrated in the figures. Show it:
Die
Der
Verbund von Förderzahnrad
Die
Regelölpumpe kann über die axial variable Überdeckung
des Zahneingriffes der beiden Förderzahnräder
Schon
geringe Abweichungen vom Soll-Steuerdruck werden vom Regelkolben
Eine
in der Steuerdruckleitung
Ein
bei geöffnetem Magnetventil
Da
der Steuerdruck vom Regelkolben
In
Es
versteht sich von selbst, dass auch bei einem von einem Regelkolben
variabel einregelten Steuerdruck, beispielsweise entsprechend der
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 102004012726 A1 [0002, 0004, 0004, 0004, 0005, 0017] - DE 102004012726 A1 [0002, 0004, 0004, 0004, 0005, 0017]
- - DE 102004007323 A1 [0003, 0005, 0019] DE 102004007323 A1 [0003, 0005, 0019]
Claims (5)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810006861 DE102008006861A1 (en) | 2008-01-31 | 2008-01-31 | 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 |
PCT/DE2009/000145 WO2009095011A2 (en) | 2008-01-31 | 2009-01-30 | Pressure switching configuration for oil pumps |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810006861 DE102008006861A1 (en) | 2008-01-31 | 2008-01-31 | 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 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008006861A1 true DE102008006861A1 (en) | 2008-12-11 |
Family
ID=39942284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810006861 Withdrawn DE102008006861A1 (en) | 2008-01-31 | 2008-01-31 | 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 |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008006861A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009021636A1 (en) | 2009-05-16 | 2010-11-18 | Voigt, Dieter, Dipl.-Ing. | Engine lubrication pump with adjustable-pressure delivery, includes first and second throttles of differing sizes in casing of solenoid valve |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004007323A1 (en) | 2004-02-14 | 2005-08-04 | Voigt, Dieter, Dipl.-Ing. | Pressure regulator for automotive oil pump has first piston operating in conjunction with a second variable-pressure piston |
DE102004012726A1 (en) | 2004-03-16 | 2005-10-06 | Voigt, Dieter, Dipl.-Ing. | Pressure regulator for automotive oil pump has first piston operating in conjunction with a second variable-pressure piston |
-
2008
- 2008-01-31 DE DE200810006861 patent/DE102008006861A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004007323A1 (en) | 2004-02-14 | 2005-08-04 | Voigt, Dieter, Dipl.-Ing. | Pressure regulator for automotive oil pump has first piston operating in conjunction with a second variable-pressure piston |
DE102004012726A1 (en) | 2004-03-16 | 2005-10-06 | Voigt, Dieter, Dipl.-Ing. | Pressure regulator for automotive oil pump has first piston operating in conjunction with a second variable-pressure piston |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009021636A1 (en) | 2009-05-16 | 2010-11-18 | Voigt, Dieter, Dipl.-Ing. | Engine lubrication pump with adjustable-pressure delivery, includes first and second throttles of differing sizes in casing of solenoid valve |
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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 |