DE10324093A1 - Discharge flow controllable lubricating oil pump for pressure oil supply of an internal combustion engine, comprises accumulator which is in hydraulic connection with spring chamber of discharge flow controller - Google Patents
Discharge flow controllable lubricating oil pump for pressure oil supply of an internal combustion engine, comprises accumulator which is in hydraulic connection with spring chamber of discharge flow controller Download PDFInfo
- Publication number
- DE10324093A1 DE10324093A1 DE2003124093 DE10324093A DE10324093A1 DE 10324093 A1 DE10324093 A1 DE 10324093A1 DE 2003124093 DE2003124093 DE 2003124093 DE 10324093 A DE10324093 A DE 10324093A DE 10324093 A1 DE10324093 A1 DE 10324093A1
- Authority
- DE
- Germany
- Prior art keywords
- oil pump
- pressure
- spring
- lubricating oil
- delivery
- 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- Withdrawn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
- 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
- F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
-
- 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
- F04C2/18—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 with similar tooth forms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N13/00—Lubricating-pumps
- F16N13/20—Rotary pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N2270/00—Controlling
- F16N2270/20—Amount of lubricant
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
Description
Die Erfindung betrifft fördermengenregelbare Schierölpumpen von Verbrennungsmotoren mit hydraulischer Fördermengenregelung durch einen Regelkolben.The Invention relates to controllable oil pumps of internal combustion engines with hydraulic flow control by a Control piston.
Eine derartige Schmierölpumpe ist als Außenzahnrad-Regelölpumpe aus der deutschen Anmeldung mit dem Aktenzeichen AZ10237801.0 (17.08.2002) bekannt. Sie weist als Fördermengenregler eine Verschiebeeinheit mit axial veränderlichem Zahneingriff der Förderzahnräder auf, die einerseits vom Förderdruck und gegenüberliegend andererseits von der Kraft einer als Verschiebefeder bezeichneten Rückstellfeder sowie durch einen Regelkolben mit Steuerdruck beaufschlagt wird. Die Auslegungskraft der Verschiebefeder bestimmt für den Förderdruck das unterste Druckregelniveau der Regelölpumpe, über die Höhe des in der Federkammer wirkenden Steuerdruckes wird der Förderdruck im Druckregelbereich der Regelölpumpe variiert.A such oil pump is off as an external gear control oil pump the German application with the file number AZ10237801.0 (08/17/2002) known. It shows as a flow regulator a displacement unit with axially variable tooth engagement Conveyor gears on, the one hand from the delivery pressure and opposite on the other hand by the force of one called a displacement spring Return spring as well as by a control piston with control pressure. The design force of the displacement spring determines the delivery pressure the lowest pressure control level of the control oil pump, above the level of the one acting in the spring chamber Control pressure becomes the delivery pressure in the pressure control range of the control oil pump varied.
Während durch eine schwach ausgelegte Verschiebefeder verbrauchsvorteilhaft ein relativ niedriger Förderdruck, beispielsweise 1,5 bar im unteren Drehzahlbereich des Verbrennungsmotors, durch den Regelkolben einstellbar ist, bewirkt die geringe Kraft der Verschiebefeder jedoch nachteilig eine relativ langsame Ölpumpenverstellung bei einer Fördermengenerhöhung. Hierdurch kann bei schnellen Drehzahlabsenkungen des Verbrennungsmotors mit dann erforderlichem Nachregelbedarf der Regelölpumpe durch eine zu geringe Verstellgeschwindigkeit kurzzeitig das betriebssichere Öldruckniveau unterschritten werden.While through a weakly designed displacement spring is advantageous in terms of consumption relatively low delivery pressure, for example 1.5 bar in the lower speed range of the internal combustion engine the control piston is adjustable, causes the low force of the displacement spring however, disadvantageous is a relatively slow oil pump adjustment when the delivery rate is increased. hereby can with fast speed reductions of the internal combustion engine with then the need for readjustment of the control oil pump due to too little Adjustment speed briefly the reliable oil pressure level be undercut.
Dieser Nachteil kann durch eine stärkere Verschiebefeder mit für den Förderdruck erhöhtem Druckregelniveau, dann jedoch mit geringeren Verbrauchsvorteilen, kompensiert werden.This Disadvantage can be due to a stronger displacement spring with for the delivery pressure increased pressure control level, then, however, with lower consumption advantages.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine fördermengenregelbare Schmierölpumpe mit einem Druckregelbereich bis hin zu niedrigen Förderdrücken durch die Verwendung einer relativ schwachen Rückstellfeder des Fördermengenreglers auszuführen, ohne dass nachteilig eine geringere Verstellgeschwindigkeit bei erforderlichen Fördermengenverstellungen in Kauf genommen werden muss.The The present invention has for its object a controllable delivery rate Lubricating oil pump with a pressure control range down to low delivery pressures the use of a relatively weak return spring of the flow regulator perform, without adversely affecting a lower adjustment speed necessary flow rate adjustments must be accepted.
Diese Aufgabe wird erfindungsgemäß durch die Verwendung eines Druckspeichers gemäß Anspruch 1 gelöst.This The object is achieved by the Use of a pressure accumulator according to claim 1 solved.
Weitere Merkmale, Vorteile und Ausgestaltungen der Erfindung ergeben sich aus den abhängigen Ansprüchen, sowie aus der nachstehenden Beschreibung von bevorzugten Ausführungsbeispielen mit beigefügten Zeichnungen. Diese zeigen inFurther Features, advantages and refinements of the invention result from the dependent claims, as well as from the following description of preferred exemplary embodiments attached Drawings. These show in
Die
Durch
die erfindungsgemäße Verwendung eines
mit der Federkammer
Bei
einem betriebsbedingt kurzzeitigen Abfall des Förderdruckes unter den Soll-Förderdruck, beispielsweise
durch eine schnelle Drehzahlabsenkung des die Ölpumpe antreibenden Ver brennungsmotors
mit dann resultierender Abnahme der Ölpumpenfördermenge, kann der Regelkolben
Bei
einem betriebsbedingt schnellen Anstieg des Förderdruckes über den
Soll-Förderdruck,
beispielsweise durch eine plötzliche
Drehzahlerhöhung, erlaubt
der Federdruckspeicher
Der
Regelkolben
In
einem weiteren Ausführungsbeispiel
zeigt
Die
- a) Position des Speicherkolbens
17 am Anschlag21 entsprechend2 : In dieser Position, die durch in der Federkammer9 niedrig eingeregelte Steuerdrücke von beispielsweise max. 2 bar bei niedrigen Motordrehzahlen auftritt, ist der Federdruckspeicher22 unwirksam. - b) Position des Speicherkolbens
17 zwischen dem Anschlag21 und dem Endanschlag19 entsprechend3 : Bei mittleren Motordrehzahlen mit zur Förderdrucksteigerung angehobenen Steuerdrücken in Federkammer9 , beispielsweise zwischen 2 und 3 bar, bewegt sich der Speicherkolben17 gegen die Kraft der Speicherfeder20 in eine vom Steuerdruck abhängige Position zwischen Anschlag21 und Endanschlag19 . Je nach Position des Speicherkolbens17 ist abhängig von der nun teilgespannten Speicherfeder20 eine teilwirksame Federdruckspeicherfunktion gegeben. - c) Position des Speicherkolbens
17 am Stufenanschlag19 : Bei höheren Motordrehzahlen mit Steuerdrücken von beispielsweise über 3 bar ist der Speicherkolben17 gegen seinen Endanschlag19 gedrückt. Die nun maximal vorgespannte Speicherfeder20 gewährleistet eine maximale Funktion des Federdruckspeichers22 .
- a) Position of the accumulator piston
17 at the stop21 corresponding2 : In this position, the through in the spring chamber9 low regulated control pressures of, for example, max. 2 bar occurs at low engine speeds, the spring pressure accumulator22 ineffective. - b) Position of the accumulator piston
17 between the stop21 and the end stop19 corresponding3 : At medium engine speeds with control pressures raised in the spring chamber to increase the delivery pressure9 , for example between 2 and 3 bar, the storage piston moves17 against the force of the spring20 in a position dependent on the control pressure between the stop21 and end stop19 , Depending on the position of the accumulator piston17 depends on the now partially tensioned spring20 given a partially effective spring pressure accumulator function. - c) Position of the accumulator piston
17 at the step stop19 : At higher engine speeds with control pressures of more than 3 bar, for example, the accumulator piston is17 against its end stop19 pressed. The maximum preloaded spring20 ensures maximum function of the spring pressure accumulator22 ,
Im
Betriebsbereich b mit einer nur teilweise gespannten Speicherfeder
Die
Betriebsfunktion des Federdruckspeichers
Die
Hierbei
ist die Speicherfeder
In
Der
Druckspeicher in
Bei
längerem
Motorstillstand sorgen die Ablaufleckagen der leerlaufenden und
damit dann unwirksamen Dichtnut
Die
Betriebsfunktion des Gasdruckspeichers
Durch die erfindungsgemäße Anordnung von Druckspeichern an Regelölpumpen können diese auch bei einem verbrauchsvorteilhaft niedrigen Druckregelniveau betrieben werden, ohne das die Betriebssicherheit hinsichtlich einer bedarfsgerechten Schmierölversorgung des Verbrennungsmotors durch eine zu langsame Fördermengenverstellung gefährdet ist.By the inventive arrangement of Pressure accumulators on control oil pumps can this even with a fuel consumption level that is advantageously low be operated without the operational safety with regard to a Lubricating oil supply as required of the internal combustion engine is endangered by a too slow delivery rate adjustment.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003124093 DE10324093A1 (en) | 2003-05-27 | 2003-05-27 | Discharge flow controllable lubricating oil pump for pressure oil supply of an internal combustion engine, comprises accumulator which is in hydraulic connection with spring chamber of discharge flow controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003124093 DE10324093A1 (en) | 2003-05-27 | 2003-05-27 | Discharge flow controllable lubricating oil pump for pressure oil supply of an internal combustion engine, comprises accumulator which is in hydraulic connection with spring chamber of discharge flow controller |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10324093A1 true DE10324093A1 (en) | 2004-12-16 |
Family
ID=33441377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2003124093 Withdrawn DE10324093A1 (en) | 2003-05-27 | 2003-05-27 | Discharge flow controllable lubricating oil pump for pressure oil supply of an internal combustion engine, comprises accumulator which is in hydraulic connection with spring chamber of discharge flow controller |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10324093A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004043954A1 (en) * | 2004-07-01 | 2006-01-19 | Voigt, Dieter, Dipl.-Ing. | Oil pump controlling method for motor vehicle, involves loading output adjusting unit of oil pump with pressure of accumulator through pressure connection to quickly switch oil pump from low pressure stage to high pressure stage |
EP1741936A1 (en) | 2005-07-08 | 2007-01-10 | THOMAS MAGNETE GmbH | Feed controlling valve for fluids |
CN113236556A (en) * | 2020-08-22 | 2021-08-10 | 苏州讯如电子科技有限公司 | Gear type pressure regulating oil pump with harmonic molded lines |
-
2003
- 2003-05-27 DE DE2003124093 patent/DE10324093A1/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004043954A1 (en) * | 2004-07-01 | 2006-01-19 | Voigt, Dieter, Dipl.-Ing. | Oil pump controlling method for motor vehicle, involves loading output adjusting unit of oil pump with pressure of accumulator through pressure connection to quickly switch oil pump from low pressure stage to high pressure stage |
EP1741936A1 (en) | 2005-07-08 | 2007-01-10 | THOMAS MAGNETE GmbH | Feed controlling valve for fluids |
CN113236556A (en) * | 2020-08-22 | 2021-08-10 | 苏州讯如电子科技有限公司 | Gear type pressure regulating oil pump with harmonic molded lines |
CN113236556B (en) * | 2020-08-22 | 2022-04-19 | 江苏锡安达防爆股份有限公司 | Gear type pressure regulating oil pump with harmonic molded lines |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8122 | Nonbinding interest in granting licenses declared | ||
8139 | Disposal/non-payment of the annual fee |