DE3313666A1 - Pressure control valve - Google Patents
Pressure control valveInfo
- Publication number
- DE3313666A1 DE3313666A1 DE19833313666 DE3313666A DE3313666A1 DE 3313666 A1 DE3313666 A1 DE 3313666A1 DE 19833313666 DE19833313666 DE 19833313666 DE 3313666 A DE3313666 A DE 3313666A DE 3313666 A1 DE3313666 A1 DE 3313666A1
- Authority
- DE
- Germany
- Prior art keywords
- spring
- valve
- pressure control
- control valve
- bimetal
- 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- Withdrawn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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
- F02M69/54—Arrangement of fuel pressure regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/30—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines
- F02M69/36—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines having an enrichment mechanism modifying fuel flow to injectors, e.g. by acting on the fuel metering device or on the valves throttling fuel passages to injection nozzles or overflow passages
- F02M69/38—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines having an enrichment mechanism modifying fuel flow to injectors, e.g. by acting on the fuel metering device or on the valves throttling fuel passages to injection nozzles or overflow passages using fuel pressure, e.g. by varying fuel pressure in the control chambers of the fuel metering device
- F02M69/386—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines having an enrichment mechanism modifying fuel flow to injectors, e.g. by acting on the fuel metering device or on the valves throttling fuel passages to injection nozzles or overflow passages using fuel pressure, e.g. by varying fuel pressure in the control chambers of the fuel metering device variably controlling the pressure of the fuel by-passing the metering valves, e.g. by valves responsive to signals of temperature or oxygen sensors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Temperature-Responsive Valves (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
DrucreelventilPressure relief valve
Stand der Technik Die Erfindung geht aus von einem Druckregelventil nach der Gattung des Hauptanspruchs. Es ist schon ein Druckregelventil bekannt, bei dem das freie Ende einer Bimetallfeder unterhalb bestimmter Temperaturen an dem Federteller einer Ventilfeder anliegt und damit die Kraft der Ventilfeder in Schließrichtung des Druckregelventiles verringert. Dabei besteht die Gefahr, daß die Ventilfeder und damit der Federteller aus Fertigungsgründen leicht gegenüber der Auflagef'äche der Bimetallfeder geneigt ist, so daß die Bimetallfeder einseitig bei Erreichen einer vorbestimmten Temperatur von dem Federteller abhebt. Hierdurch wird bei einer Aufheizung der Bimetallfeder durch ein elektrisches Heizelement in unerwünschter Weise die Zeitdauer verlängert, In der die 3imetallfeder der Ventilfeder entgegenwirkt.PRIOR ART The invention is based on a pressure control valve according to the genre of the main claim. A pressure control valve is already known in which the free end of a bimetal spring below certain temperatures the spring plate of a valve spring rests and thus the force of the valve spring in Closing direction of the pressure control valve reduced. There is a risk that the valve spring and thus the spring plate slightly opposite for manufacturing reasons the support surface of the bimetallic spring is inclined so that the bimetallic spring is unilateral lifts off from the spring plate when a predetermined temperature is reached. Through this is activated when the bimetal spring is heated by an electrical heating element in undesirably prolongs the period of time in which the 3imetallfeder of the valve spring counteracts.
Bei einer Anwendung des Druckregelventiles in einer Kraftstoffeinspritzanlage führt ein derartiges Ausregelverhalten in unerwünschter Weise zu einem zu fetten Kraftstoff-Luft-Gemisch, das zu einem erhöhten Kraftstoffverbrauch und höheren Anteilen giftiger Abgasbestandteile führt.When using the pressure control valve in a fuel injection system Such a control behavior undesirably leads to a too rich Fuel-air mixture, which leads to increased fuel consumption and higher proportions toxic exhaust gas components.
Vorteile der Erfindung Das erfindungsgemäße Druckregelventil mit den kennzeichnenden Merkmalen des Patentanspruchs hat demgegenüber den Vorteil, daß eine schiefstehende Ventilfeder auf das Regelverhalten des Druckregelventiles keinen Einfluß hat.Advantages of the Invention The pressure control valve according to the invention with the Characteristic features of the claim has the advantage that a tilted valve spring does not affect the control behavior of the pressure control valve Has influence.
Zeichnung Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert.Drawing An embodiment of the invention is shown in the drawing shown in simplified form and explained in more detail in the following description.
Beschreibung des Ausführungsbeispieles In der Zeichnung ist ein Druckregelventil 1 mit einem aus zwei Einzelteilen bestehenden Gehäuse 2 dargestellt, das zur Regelung eines Flüssigkeitsdruckes dient, beispielsweise in bekannter Weise zur Regelung eines Steuerdruckes des Kraftstoffes in einer Kraftstoffeinspritzanlage einer gemischverdichtenden fremdgezündeten Brennkraftmaschine.Description of the exemplary embodiment In the drawing is a pressure control valve 1 shown with a housing 2 consisting of two parts, the control a liquid pressure is used, for example in a known manner for regulation a control pressure of the fuel in a fuel injection system of a mixture-compressing externally ignited internal combustion engine.
n dem Gehäuse 2 ist ein Einsatz 3 befestigt, der eine -luidzuströmöffnung 4 aufweist, die mit einem Ringraum 5 in 'Jerbindung steht. In den Ringraum 5 ragt ein fester Ventilsitz 6, von dem eine Strömungsleitung 7 zu einer ?luidabströmöffnung 8 führt. Als bewegliches Ventilteil des Druckregelventlles 1 dient eine Membran 1-0, die den Ringraum 5 einerseits begrenzend mit dem entilsit 6 zusammenwirkt und an einer Stirnfläche des Einsatzes 3 mitteis eines Spannkörpers 11 und Schrauben 12 festgespannt ist. Ventilsitz 6 und Membran 10 bilden ein Flachsitzventil. Dem Ventilsitz 6 abgewandt greift gleichachsig zum Yentisitz ausgerichtet an der Membran 10 ein AuS-lager 13 an, das durch eine Öffnung 114 des Spannkörpers 11 ragt und auf den ein Ubertragungsstift 16 mit balligen Enden wirkt, der sich andererseits an einem ersten Federteller 17 abstützt, an dem das eine Ende einer Ventilfeder 18 anliegt. Das andere Ende der Ventilfeder 18 ist am Gehäuse 2 gelagert. Die Ventilfeder 18 beaufschlagt über den ersten Federteller 17, den Ubertragungsstift 16 und das Auflager 13 die Membran 10 in Richtung zum Ventilsitz 6 hin, also in Schließrichtung des Druckregelventiles 1 und bestimmt mit ihrer Kraft den durch das Druckregelventil geregelten Fluiddruck.An insert 3, which has a fluid inflow opening, is fastened in the housing 2 4 which is connected to an annular space 5. In the annular space 5 protrudes a fixed valve seat 6, from which a flow line 7 leads to an fluid outflow opening 8 leads. A membrane is used as the movable valve part of the pressure control valve 1 1-0, which on the one hand interacts with the entilsit 6 and delimits the annular space 5 on one end face of the insert 3 in the middle of a clamping body 11 and screws 12 is clamped. Valve seat 6 and membrane 10 form a flat seat valve. To the Valve seat 6 facing away from it engages coaxially with the Yenti seat aligned on the membrane 10 an outsourced warehouse 13 through an opening 114 of the clamping body 11 protrudes and acts on a transmission pin 16 with spherical ends, which is on the other hand supported on a first spring plate 17, on which one end of a Valve spring 18 is applied. The other end of the valve spring 18 is mounted on the housing 2. The valve spring 18 acts on the first spring plate 17, the transmission pin 16 and the support 13, the membrane 10 in the direction of the valve seat 6, so in Closing direction of the pressure control valve 1 and determined by its force the pressure regulating valve regulated fluid pressure.
In das -=ehäuse 2 ist ebenfalls ein Bolzen 25 eingepreßt, an dem mittels einer Mutter 26 das feste Ende einer Bimetallfeder 27 fest eingespannt ist, während das freie Ende 28 unterhalb einer bestimmten Temperatur an einem tragen 29 eines zweiten Federtellers 32 angreift. Auf die Bimetallfeder 27 ist ein elektrisches Heizelement 30 aufgesetzt, das über einen elektrischen Stecker 31 mit Strom versorgt werden kann. Durch das elektrische Heizelement 30 und die Bimetallfeder 27, die unterhalb einer bestimmten Temperatur der Bimetallfeder 27 am Kragen 29 des zweiten Federtellers 32 angreift und die Kraft der Ventilfeder 18 auf die Membran 10 verringert, wodurch ein geringerer Fluiddruck durch das Druckregelventil 1 geregelt wird, ist er durch das Druckregelventil 1 geregelte Druck temperatur- und zeitabhängig regelbar. Oberhalb einer vorbestimmten Tetaperatur ler Bimetallfeder 27, die etwa der otorbetriebstemperatur von ca. 80°C entsprioht, hebt das freie Ende 28 von dem Kragen 29 des zweiten Federtellers 32 ab, so das der fluiddruck nur noch durch die Kraft der- Ventileder 3 bestimmt wird. Bei der Verwendung des Druckregelventiles 1 in einer Kraftstoffeinspritzanlage ist das elektrische Heizelement 30 etwa so ausgelegt, daß es nei einem Start der Brennkraftmaschine unterhalb der Motorbetriebstemperatur von ca. 800C die Bimetallfeder 2 etwa die Motorerwärmung simulierend auf die Motorbetrieostemperatur erwärmt, so daß diese nach einer Zeit von dem Kragen 29 des zweiten Federtellers 32 abhebt, in der die Erwärmung der Motorzylinder erfolgt ist.In the - = ehäus 2 a bolt 25 is also pressed, on which means a nut 26, the fixed end of a bimetal spring 27 is firmly clamped while the free end 28 below a certain temperature on a wear 29 a second spring plate 32 engages. On the bimetal spring 27 is an electrical Placed on heating element 30, which is supplied with power via an electrical connector 31 can be. By the electrical heating element 30 and the bimetal spring 27, the below a certain temperature of the bimetal spring 27 on the collar 29 of the second Engages the spring plate 32 and reduces the force of the valve spring 18 on the diaphragm 10, whereby a lower fluid pressure is regulated by the pressure regulating valve 1 he pressure regulated by the pressure regulating valve 1 can be regulated as a function of temperature and time. Above a predetermined Tetaperatur ler bimetallic spring 27, which is approximately the otor operating temperature of about 80 ° C, the free end 28 lifts from the collar 29 of the second spring plate 32 from, so that the fluid pressure is only determined by the force of the valve 3 will. When using the pressure control valve 1 in a fuel injection system is this electrical heating element 30 designed approximately so that it nei a start of the internal combustion engine below the engine operating temperature of approx. 800C the bimetallic spring 2 simulates the engine heating to the engine operating temperature heated, so that this after a time from the collar 29 of the second spring plate 32 takes off, in which the heating of the engine cylinders has taken place.
Der zweite Federteller 32 weist neben dem Kragen 29 einen kegelförmigen Hals 33 mit einem inneren Führungskonus 34 auf, in den der Übertragungsstift 16 ragt und an dessen gewölbtem Grund 35 anliegt, diesen an das Auflage 13 gepreßt haltend. Der Hals 33 des zweiten Federtellers 32 durchragt eine Öffnung 36 der Bimetallfeder 27, so da! die Bimetallfeder 27 auf der dem ersten Federteller 17 abgewandten Seite des Kragens 29 in der oben beschriebenen Art und Weise temperatur- und zeitabhängig an dem Kragen 29 mehr oder weniger zur Beeinflussung der Schlieikraft auf die Membran 10 angreifen kann, ohne eine Beeinträchtigung des Regelverhaltens durch eine schiefstehende Ver.-tilfeder 18.In addition to the collar 29, the second spring plate 32 has a conical shape Neck 33 with an inner guide cone 34 into which the transmission pin 16 protrudes and rests against the arched base 35, this pressed against the support 13 holding. The neck 33 of the second spring plate 32 protrudes through an opening 36 of the bimetal spring 27, so there! the bimetallic spring 27 on the side facing away from the first spring plate 17 of the collar 29 as a function of temperature and time in the manner described above on the collar 29 more or less to influence the closing force on the membrane 10 can attack without impairing the control behavior by a crooked Ver.-tilfeder 18.
- Leerseite -- blank page -
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833313666 DE3313666A1 (en) | 1983-04-15 | 1983-04-15 | Pressure control valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19833313666 DE3313666A1 (en) | 1983-04-15 | 1983-04-15 | Pressure control valve |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3313666A1 true DE3313666A1 (en) | 1984-10-18 |
Family
ID=6196468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19833313666 Withdrawn DE3313666A1 (en) | 1983-04-15 | 1983-04-15 | Pressure control valve |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3313666A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4009641A1 (en) * | 1990-03-26 | 1991-10-02 | Daimler Benz Ag | DEVICE FOR HYDRAULIC CURRENT CONTROL OR -REGULATION |
US5277028A (en) * | 1990-03-26 | 1994-01-11 | Mercedes-Benz Ag | Hydraulic flow control with temperature sensitive spring biased bypass valve |
WO2002097273A2 (en) * | 2001-05-31 | 2002-12-05 | Luk Automobilitechnik Gmbh & Co. Kg | Pump having a temperature-dependent delivery volume |
-
1983
- 1983-04-15 DE DE19833313666 patent/DE3313666A1/en not_active Withdrawn
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4009641A1 (en) * | 1990-03-26 | 1991-10-02 | Daimler Benz Ag | DEVICE FOR HYDRAULIC CURRENT CONTROL OR -REGULATION |
US5277028A (en) * | 1990-03-26 | 1994-01-11 | Mercedes-Benz Ag | Hydraulic flow control with temperature sensitive spring biased bypass valve |
WO2002097273A2 (en) * | 2001-05-31 | 2002-12-05 | Luk Automobilitechnik Gmbh & Co. Kg | Pump having a temperature-dependent delivery volume |
FR2825419A1 (en) * | 2001-05-31 | 2002-12-06 | Luk Automobiltech Gmbh & Co Kg | PUMP IN PARTICULAR FOR LUBRICATING OIL OF INTERNAL COMBUSTION ENGINES WHOSE TRANSPORTED VOLUME IS ADJUSTABLE ACCORDING TO TEMPERATURE |
WO2002097273A3 (en) * | 2001-05-31 | 2003-04-03 | Luk Automobilitechnik Gmbh & C | Pump having a temperature-dependent delivery volume |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |