EP0585526B1 - Electromagnetically operated valve - Google Patents
Electromagnetically operated valve Download PDFInfo
- Publication number
- EP0585526B1 EP0585526B1 EP93107039A EP93107039A EP0585526B1 EP 0585526 B1 EP0585526 B1 EP 0585526B1 EP 93107039 A EP93107039 A EP 93107039A EP 93107039 A EP93107039 A EP 93107039A EP 0585526 B1 EP0585526 B1 EP 0585526B1
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- EP
- European Patent Office
- Prior art keywords
- closing member
- valve
- auxiliary
- main
- force
- 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.)
- Expired - Lifetime
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Classifications
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- 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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
Definitions
- the invention relates to an electromagnetically actuated valve for the timed feeding of volatile fuel components from the free space of a fuel tank into the intake pipe of an internal combustion engine, the valve being provided with at least one inlet opening and at least one outlet opening, a main valve seat and a between the inlet and outlet openings auxiliary valve seat connected in parallel with a corresponding main closing element and an auxiliary closing element are provided, the main closing element having a movable mass m I and the auxiliary closing element having a movable mass m II and the closing elements sealing the corresponding valve seats in the tension-free state by the force of at least one valve spring in each case touch and the main closing member upon actuation of a resulting force F resI and the auxiliary closing member of a resulting force F resII each in the open position are transferable.
- Such a valve is known from DE-PS 40 03 036.
- the auxiliary closing member is, based on the main closing member, of smaller size and mass, so that it can be brought into the open position more quickly and the main closing member can therefore be hydraulically relieved, so that the main closing member also has a higher opening speed. It should be noted, however, that cost-effective manufacture cannot be achieved simply by using a smaller mass of the auxiliary closing member. For an optimization of the valve with regard to its usage properties, the manufacturing effort and During assembly, a large number of parameters must be taken into account which, as a whole, lead to an inexpensive solution.
- the invention has for its object to further develop an electromagnetically actuated valve of the type mentioned in such a way that, with good performance properties, it is easier and more economical to manufacture and the components used have a favorable influence on one another and are optimally coordinated with one another.
- the valve is optimized in that the ratio of F resI / m I is smaller than the ratio of F resII / m II .
- the magnetic circuit of the auxiliary valve has a faster or comparable force build-up speed than the main valve and / or the spring preload of the valve spring of the auxiliary valve is lower than that of the main valve in relation to the force build-up speed.
- the valve cross section and thus the throughput can be greater than the valve cross section and thus the throughput of the auxiliary valve with the same pressure ratio of the main valve.
- the auxiliary valve has a smaller or, in the limit case, the same opening cross section as the main valve, but opens earlier.
- a lower armature mass, a lower armature stroke and a dynamic design of the magnetic circuit can be supported by low inductance and lower magnetic Resistors can be selected.
- the main valve has the same or larger opening cross section than the auxiliary valve. Due to a lower force build-up speed and / or a higher spring preload, it opens later than the auxiliary valve. This can be supported by a dynamic design of the magnetic circuit, a larger opening cross-section, a larger armature mass and a larger armature stroke.
- a simple and economically favorable valve can have an auxiliary closing member that has a lower inertial mass than the main closing member and / or the auxiliary valve seat can have a smaller opening cross section than the main valve seat. Interventions in the actuating mechanism of the valve are therefore unnecessary.
- the main closing element and the auxiliary closing element can then be actuated by magnet coils connected in parallel.
- the internal combustion engine 6 is connected to the air filter 18 through an intake pipe 5, which contains a throttle valve 17.
- the exhaust manifold 19 is also flanged to the internal combustion engine 6.
- a fuel supply device 20 is provided in the intake pipe 5 above the throttle valve 17, in which the fresh air volume supplied through the air filter 18 is mixed with fuel to the required extent.
- the signals required for this are provided by the control unit 21, for example on the basis of the exhaust gas temperature and composition, the operating speed of the internal combustion engine 6 and the ambient temperature.
- the corresponding input signals are detected using appropriate sensors and are indicated by the arrows 22, 23, 24, 25. If required, they can be supplemented to the desired extent.
- the fuel tank 4 is only partially filled with liquid fuel and has a free space 3 above the fuel level, which is filled with volatile fuel components 2.
- the closure 26 of the fuel tank 4 hermetically seals the same from the surroundings.
- the free space 3 of the fuel tank 4 is connected to the atmosphere 28 through the ventilation line 27.
- the vent line 27 contains the storage chamber 29, which is filled with granules of activated carbon. The dimensions of the storage chamber 29 are such that, under normal operating conditions, volatile fuel components cannot pass through the mouth of the vent line 27.
- the line 30 On the side of the storage chamber 29 opposite the mouth of the ventilation line 27, the line 30 is connected, which connects the storage chamber 29 to the intake pipe 5 of the internal combustion engine 6.
- the electromagnetically actuable valve 1 is arranged in the line 30, which valve is closed when the internal combustion engine 6 is shut down and can be actuated by the control unit 21, which is connected by an electrical connecting line 31 to the magnet coils 15, 16 of the main closing element 11 and auxiliary closing element 12.
- the main closing element 11 can be brought into engagement with the main valve seat 9 and, when the valve 1 is not actuated, is placed on the valve seat under spring force by the valve spring 13 when the valve 1 is not actuated.
- valve springs 13, 14 are each designed such that a sealing pressure of the valve closing members 11, 12 against the corresponding valve seats 9, 10 is just guaranteed.
- the auxiliary closing element 12 opens earlier.
- the mass of the volume flow implemented per unit of time can be changed as required by modifying the time period in which the main and auxiliary closing members 11, 12 are opened per activation.
- the duration of the control also influences the operating behavior of the valve 1. At very high frequencies, it includes the case that the signal causing the electrical control in the connecting line has already decayed before the main closing element 12 responds, so that only the auxiliary closing element 12 comes into the open position during a particularly short period of time.
- the volume of fuel vapors passed through is accordingly very particularly low, so that the volatile fuel constituents 2 can be disposed of from the storage chamber 29 into the internal combustion engine 6 even at low speeds, for example at idle speed, without the fuel / air mixture being over-greased and thus malfunctions Internal combustion engine 6 are to be feared.
- the permeability of the valve 1 according to the invention can be changed continuously without requiring a special electrical control effort. In addition to particularly good operating behavior, excellent exhaust gas values can be ensured in the different operating states of the internal combustion engine 6.
- the valve 1 according to the invention has good usage properties and is particularly economical in terms of economy and production technology.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Magnetically Actuated Valves (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Valve Device For Special Equipments (AREA)
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
- Means For Warming Up And Starting Carburetors (AREA)
Description
Die Erfindung betrifft ein elektromagnetisch betätigbares Ventil für die getaktete Einspeisung flüchtiger Kraftstoffbestandteile aus dem Freiraum eines Kraftstoffbehälters in das Ansaugrohr einer Verbrennungskraftmaschine, wobei das Ventil mit zumindest einer Einlaßöffnung und zumindest einer Auslaßöffnung versehen ist, wobei zwischen der Einlaß- und der Auslaßöffnung ein Hauptventilsitz und ein dazu parallel geschalteter Hilfsventilsitz mit einem entsprechenden Hauptschließglied und einem Hilfsschließglied vorgesehen sind, wobei das Hauptschließglied eine bewegbare Masse mI und das Hilfsschließglied eine bewegbare Masse mII aufweist und wobei die Schließglieder die entsprechenden Ventilsitze im spannungsfreien Zustand durch die Kraft von zumindest jeweils einer Ventilfeder dichtend berühren und wobei das Hauptschließglied bei Betätigung von einer resultierenden Kraft FresI und das Hilfsschließglied von einer resultierenden Kraft FresII jeweils in Offenstellung überführbar sind.The invention relates to an electromagnetically actuated valve for the timed feeding of volatile fuel components from the free space of a fuel tank into the intake pipe of an internal combustion engine, the valve being provided with at least one inlet opening and at least one outlet opening, a main valve seat and a between the inlet and outlet openings auxiliary valve seat connected in parallel with a corresponding main closing element and an auxiliary closing element are provided, the main closing element having a movable mass m I and the auxiliary closing element having a movable mass m II and the closing elements sealing the corresponding valve seats in the tension-free state by the force of at least one valve spring in each case touch and the main closing member upon actuation of a resulting force F resI and the auxiliary closing member of a resulting force F resII each in the open position are transferable.
Ein derartiges Ventil ist aus der DE-PS 40 03 036 bekannt. Das Hilfsschließglied ist, bezogen auf das Hauptschließglied von geringerer Größe und Masse, so daß es schneller in Offenstellung überführbar ist und das Hauptschließglied daher hydraulisch entlastet werden kann, so daß auch das Hauptschließglied eine größere Öffnungsgeschwindigkeit aufweist. Dabei ist allerdings zu beachten, daß alleine durch eine geringere Masse des Hilfsschließgliedes eine kostengünstige Herstellung nicht erzielt werden kann. Für eine Optimierung des Ventils bezüglich seiner Gebrauchseigenschaften, des Herstellungsaufwandes und der Montage müssen eine Vielzahl von Parametern berücksichtigt werden, die als Gesamteinheit zu einer günstigen Lösung führen.Such a valve is known from DE-PS 40 03 036. The auxiliary closing member is, based on the main closing member, of smaller size and mass, so that it can be brought into the open position more quickly and the main closing member can therefore be hydraulically relieved, so that the main closing member also has a higher opening speed. It should be noted, however, that cost-effective manufacture cannot be achieved simply by using a smaller mass of the auxiliary closing member. For an optimization of the valve with regard to its usage properties, the manufacturing effort and During assembly, a large number of parameters must be taken into account which, as a whole, lead to an inexpensive solution.
Der Erfindung liegt die Aufgabe zugrunde, ein elektromagnetisch betätigbares Ventil der eingangs genannten Art derart weiterzuentwickeln, daß sich bei guten Gebrauchseigenschaften eine vereinfachte und wirtschaftlichere Herstellbarkeit ergibt und die zur Anwendung gelangenden Bauteile einander günstig beeinflussen und in optimaler Weise aufeinander abgestimmt sind.The invention has for its object to further develop an electromagnetically actuated valve of the type mentioned in such a way that, with good performance properties, it is easier and more economical to manufacture and the components used have a favorable influence on one another and are optimally coordinated with one another.
Diese Aufgabe wird erfindungsgemäß mit den kennzeichnenden Merkmalen von Anspruch 1 gelöst. Auf vorteilhafte Ausgestaltungen nehmen die Unteransprüche Bezug.This object is achieved with the characterizing features of claim 1. The subclaims refer to advantageous refinements.
Eine Optimierung des Ventils erfolgt dadurch, daß das Verhältnis aus FresI/mI kleiner ist als das Verhältnis aus FresII/mII. Um diese Vorgaben zu erzielen hat der Magnetkreis des Hilfsventils eine schnellere oder vergleichbare Kraftaufbaugeschwindigkeit als das Hauptventil und/oder die Federvorspannung der Ventilfeder des Hilfsventils ist bezogen auf die Kraftaufbaugeschwindigkeit geringer als die des Hauptventils. Ferner kann der Ventilquerschnitt und damit der Durchsatz bei gleichem Druckverhältnis des Hauptventils größer sein als der Ventilquerschnitt und damit der Durchsatz des Hilfsventils. Das Hilfsventil weist einen geringeren oder im Grenzfall gleichen Öffnungsquerschnitt auf, wie das Hauptventil, öffnet aber früher. Unterstützend kann eine geringere Ankermasse, ein geringerer Ankerhub und eine dynamische Auslegung des Magnetkreises durch geringe Induktivität und geringerer magnetische Widerstände gewählt werden. Das Hauptventil weist einen gleichen oder größeren Öffnungsquerschnitt gegenüber dem Hilfsventil auf. Durch eine geringere Kraftaufbaugeschwindigkeit und/oder eine betragsmäßig höhere Federvorspannung öffnet es später als das Hilfsventil. Dies kann unterstützt werden durch eine dynamische Auslegung des Magnetkreises, einen größeren Öffnungsquerschnitt, eine größere Ankermasse und einen großeren Ankerhub.The valve is optimized in that the ratio of F resI / m I is smaller than the ratio of F resII / m II . In order to achieve these specifications, the magnetic circuit of the auxiliary valve has a faster or comparable force build-up speed than the main valve and / or the spring preload of the valve spring of the auxiliary valve is lower than that of the main valve in relation to the force build-up speed. Furthermore, the valve cross section and thus the throughput can be greater than the valve cross section and thus the throughput of the auxiliary valve with the same pressure ratio of the main valve. The auxiliary valve has a smaller or, in the limit case, the same opening cross section as the main valve, but opens earlier. A lower armature mass, a lower armature stroke and a dynamic design of the magnetic circuit can be supported by low inductance and lower magnetic Resistors can be selected. The main valve has the same or larger opening cross section than the auxiliary valve. Due to a lower force build-up speed and / or a higher spring preload, it opens later than the auxiliary valve. This can be supported by a dynamic design of the magnetic circuit, a larger opening cross-section, a larger armature mass and a larger armature stroke.
Mit einer Erhöhung der Ankermasse alleine ist eine kostengünstige Herstellung im Vergleich zu den oben angegebenen Maßnahmen nicht zu erzielen. Die oben genannten Maßnahmen bezüglich der Auslegung von Federvorspannung, Magnetkreisauslegung und Öffnungsquerschnitt führen insgesamt zu einer kostengünstigen Lösung.With an increase in the anchor mass alone, cost-effective production cannot be achieved in comparison to the measures specified above. The above-mentioned measures with regard to the design of spring preload, magnetic circuit design and opening cross-section lead overall to an inexpensive solution.
Die resultierenden Kräfte FresI, FresII, die auf die Schließglieder wirken, sind aus der Magnetkraft FMI, II, der Federkraft FFI, II und der Gewichtskraft FGI,II des entsprechenden Schließgliedes zusammengesetzt, die nach Betrag und Richtung addiert sind. Ein einfaches und wirtschaftlich günstiges Ventil kann gemäß einer vorteilhaften Ausgestaltung ein Hilfsschließglied aufweisen, das eine geringere Trägheitsmasse hat als das Hauptschließglied und/oder der Hilfsventilsitz kann einen geringeren Öffnungsquerschnitt aufweisen als der Hauptventilsitz. Eingriffe in den Betätigungsmechanismus des Ventils sind dadurch entbehrlich.The resulting forces F resI, F resII, which act on the closing elements, are composed of the magnetic force F MI , II , the spring force F FI , II and the weight force F GI , II of the corresponding closing element, which are added according to amount and direction. According to an advantageous embodiment, a simple and economically favorable valve can have an auxiliary closing member that has a lower inertial mass than the main closing member and / or the auxiliary valve seat can have a smaller opening cross section than the main valve seat. Interventions in the actuating mechanism of the valve are therefore unnecessary.
Das Hauptschließglied und das Hilfsschließglied können dann durch parallel geschaltete Magnetspulen betätigbar sein. Durch die Verwendung von ähnlichen oder gleichen Bauteilen kann durch einen modularen Aufbau eine erhebliche Kostenreduzierung erzielt werden.The main closing element and the auxiliary closing element can then be actuated by magnet coils connected in parallel. By using similar or the same components, a significant reduction in costs can be achieved through a modular structure.
Davon abweichend ist eine elektrisch getrennte Ansteuerung von Hauptschließglied und Hilfsschließglied ebenfalls möglich.Deviating from this, an electrically separate control of the main closing element and auxiliary closing element is also possible.
Der Gegenstand der vorliegenden Erfindung wird nachfolgend anhand der Zeichnung weiter verdeutlicht. Diese zeigt die zur Anwendung gelangenden Komponenten teilweise in schematischer Darstellung.The subject matter of the present invention is illustrated below with reference to the drawing. This shows the components used in part in a schematic representation.
Die Verbrennungskraftmaschine 6 ist durch ein Ansaugrohr 5, das eine Drosselklappe 17 enthält mit dem Luftfilter 18 verbunden. Der Auspuffkrümmer 19 ist ebenfalls an der Verbrennungskraftmaschine 6 angeflanscht.The
Im Ansaugrohr 5 ist oberhalb der Drosselklappe 17 eine Kraftstoffversorgungseinrichtung 20 vorgesehen, in der das durch den Luftfilter 18 zugeführte Frischluftvolumen im erforderlichen Maße mit Kraftstoff versetzt wird. Die dazu erforderlichen Signale werden durch das Steuergerät 21 bereitgestellt, beispielsweise auf der Grundlage der Abgastemperatur und Zusammensetzung, der Betriebsdrehzahl der Verbrennungskraftmaschine 6 und der Umgebungstemperatur. Die entsprechenden Eingangssignale werden unter Verwendung entsprechender Sensoren erfaßt und sind durch die Pfeile 22, 23, 24, 25 angedeutet. Sie können bei Bedarf in erwünschtem Maße ergänzt werden.A
Der Kraftstoffbehälter 4 ist nur teilweise mit flüssigem Kraftstoff gefüllt und weist oberhalb des Kraftstoffspiegels einen Freiraum 3 auf, der mit flüchtigen Kraftstoffbestandteilen 2 gefüllt ist. Der Verschluß 26 des Kraftstoffbehälters 4 schließt denselben gegenüber der Umgebung hermetisch ab. Der Freiraum 3 des Kraftstoffbehälters 4 ist durch die Entlüftungsleitung 27 mit der Atmosphäre 28 verbunden. Die Entlüftungsleitung 27 enthält die Speicherkammer 29, die mit einem Granulat aus Aktivkohle gefüllt ist. Die Dimensionierung der Speicherkammer 29 ist dabei so vorgenommen, daß unter normalen Betriebsbedingungen flüchtige Kraftstoffbestandteile die Mündung der Entlüftungsleitung 27 nicht passieren können.The fuel tank 4 is only partially filled with liquid fuel and has a
Auf der der Mündung der Entlüftungsleitung 27 gegenüberliegenden Seite der Speicherkammer 29 ist die Leitung 30 angeschlossen, die die Speicherkammer 29 mit dem Ansaugrohr 5 der Verbrennungskraftmaschine 6 verbindet. In der Leitung 30 ist das elektromagnetisch betätigbare Ventil 1 angeordnet, das bei Außerbetriebsetzung der Verbrennungskraftmaschine 6 geschlossen und durch das Steuergerät 21 betätigbar ist, welches durch eine elektrische Verbindungsleitung 31 an die Magnetspulen 15, 16 des Hauptschließglieds 11 und HilfsschließgliedS 12 angeschlossen ist. Das Hauptschließglied 11 ist mit dem Hauptventilsitz 9 in Eingriff bringbar und wird im spannungsfreien Zustand, bei nichtbetätigtem Ventil 1 durch die Ventilfeder 13 federkraftbeaufschlagt auf dem Ventilsitz aufgelegt. Entsprechendes gilt für das Hilfsschließglied 12 mit dem Hilfsventilsitz 10 und der entsprechenden Ventilfeder 14. Die Ventilfedern 13, 14 sind jeweils derart ausgelegt, daß eine dichtende Anpressung der Ventilschließglieder 11, 12 an die entsprechenden Ventilsitze 9, 10 gerade noch gewährleistet ist. Unter Zugrundelegung der Bedingung, daß die auf das jeweilige Schließglied wirkende resultierende Kraft bezogen auf die Masse des jeweiligen Schließgliedes bei dem Hilfsschließglied 12 größer ist als bei dem Hauptschließglied 11 ergibt sich bei einer gemeinsamen Ansteuerung beider Magnetspulen 15, 16 eine frühere Öffnung des Hilfsschließglieds 12.On the side of the
Die Masse des je Zeiteinheit durchgesetzten Volumenstroms läßt sich bei einer getakteten Ansteuerung durch eine Modifizierung der Zeitdauer, in der das Haupt- bzw. das Hilfsschließglied 11, 12 pro Ansteuerung geöffnet sind, bedarfsweise verändern. Die Zeitdauer der Ansteuerung nimmt ebenfalls Einfluß auf das Betriebsverhalten des Ventils 1. Sie schließt bei sehr hohen Frequenzen den Fall mit ein, daß das die elektrische Ansteuerung bewirkende Signal in der Verbindungsleitung bereits vor dem Ansprechen des Hauptschließglieds 12 abgeklungen ist, so daß nur das Hilfsschließglied 12 während einer besonders kurzen Zeitspanne in Offenstellung gelangt. Das Volumen der durchgesetzten Kraftstoffdämpfe ist dementsprechend ganz besonders gering, so daß eine Entsorgung der flüchtigen Kraftstoffbestandteile 2 aus der Speicherkammer 29 in die Verbrennungskraftmaschine 6 auch bei niedrigen Drehzahlen, beispielsweise im Leerlauf erfolgen kann, ohne daß eine Überfettung des Kraftstoff-Luftgemischs und damit Betriebsstörungen der Verbrennungskraftmaschine 6 zu befürchten sind.In the case of a clocked activation, the mass of the volume flow implemented per unit of time can be changed as required by modifying the time period in which the main and
Einer solchen Betriebssituation steht gegenüber, daß das Hauptschließglied 11 und das Hilfsschließglied 12 während einer besonders langen Zeitspanne überwiegend parallel zueinander in Offenstellung befindlich sind. In diesem Falle ist das Volumen der je Zeiteinheit durchgesetzten, flüchtigen Kraftstoffbestandteile 2 ganz besonders groß. Dies ist dann der Fall, wenn die Verbrennungskraftmaschine 6 im Teillastbetrieb oder im Vollastbetrieb gefahren wird.Such an operating situation is offset by the fact that the
Die Durchlässigkeit des erfindungsgemäßen Ventils 1 läßt sich stufenlos verändern, ohne daß es hierzu eines besonderen, elektrischen Steueraufwandes bedarf. Neben einem besonders guten Betriebsverhalten lassen sich dadurch in den unterschiedlichen Betriebszuständen der Verbrennungskraftmaschine 6 ausgezeichnete Abgaswerte gewährleisten. Das erfindungsgemäße Ventil 1 weist gute Gebrauchseigenschaften auf und ist in wirtschaftlicher und fertigungstechnischer Hinsicht besonders günstig.The permeability of the valve 1 according to the invention can be changed continuously without requiring a special electrical control effort. In addition to particularly good operating behavior, excellent exhaust gas values can be ensured in the different operating states of the
Claims (6)
- An electromagnetically actuable valve for the cyclical feeding of volatile fuel components from the free space in a fuel container into the intake pipe of an internal combustion engine, the valve being provided with at least one inlet opening and at least one outlet opening, a main valve seat and an auxiliary valve seat arranged in parallel with the main valve seat, together with a corresponding main closing member and an auxiliary closing member, being provided between the inlet opening and the outlet opening, the main closing member having a movable mass mI and the auxiliary closing member having a movable mass mII, and the closing members touching in a sealing manner the corresponding valve seats in the electrically de-energized state by virtue of the force of at least one valve spring in each case, and the main closing member being transferable into an open position, upon actuation, by a resultant force FresI and the auxiliary closing member by a resultant force FresII, characterized in that the ratio
- A valve according to claim 1, characterized in that the resultant forces FresI, FresII which act on the closing members (11, 12) are made up of the magnetic force FMI, FMII, the spring force FFI, FFII and the weight FGI, FGII of the corresponding closing member (11, 12), which are added in terms of both magnitude and direction.
- A valve according to either of claims 1 and 2, characterized in that the auxiliary member (12) has a lower inertial mass than the main closing member (11) and/or in that the auxiliary valve seat (10) has a smaller aperture cross-section than the main valve seat (9).
- A valve according to any of claims 1 to 3, characterized in that the main closing member (11) and the auxiliary closing member (12) are actuable by magnet coils (15, 16) connected in parallel.
- A valve according to any of claims 1 to 4, characterized in that the magnet coil (16) of the auxiliary closing member (12) has a higher force build-up rate dFMII/dt than the magnet coil (15) of the main closing member (11) dFMI/dt.
- A valve according to either of claims 2 and 5, characterized in that the ratio of the spring force to the force build-up rate of the auxiliary closing member (12) is smaller than the same ratio in relation to the main closing member (11).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4229105 | 1992-09-01 | ||
| DE4229105A DE4229105C1 (en) | 1992-09-01 | 1992-09-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0585526A1 EP0585526A1 (en) | 1994-03-09 |
| EP0585526B1 true EP0585526B1 (en) | 1995-08-02 |
Family
ID=6466939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93107039A Expired - Lifetime EP0585526B1 (en) | 1992-09-01 | 1993-04-30 | Electromagnetically operated valve |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5341787A (en) |
| EP (1) | EP0585526B1 (en) |
| JP (1) | JPH06159164A (en) |
| BR (1) | BR9303048A (en) |
| CA (1) | CA2105244C (en) |
| DE (2) | DE4229105C1 (en) |
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| JP2651782B2 (en) * | 1993-05-21 | 1997-09-10 | 京三電機株式会社 | Solenoid valve located between fuel tank and intake manifold |
| DE4400879C2 (en) * | 1994-01-14 | 2003-02-13 | Siemens Ag | throttle body |
| US6308690B1 (en) * | 1994-04-05 | 2001-10-30 | Sturman Industries, Inc. | Hydraulically controllable camless valve system adapted for an internal combustion engine |
| US5535725A (en) * | 1994-09-19 | 1996-07-16 | Hi-Stat Manufacturing Co., Inc. | Flow control solenoid means |
| FR2727185A1 (en) * | 1994-11-17 | 1996-05-24 | Sagem Allumage | SOLENOID VALVE AND INTERNAL COMBUSTION ENGINE FUEL VAPOR RECYCLING CIRCUIT |
| US6167869B1 (en) * | 1997-11-03 | 2001-01-02 | Caterpillar Inc. | Fuel injector utilizing a multiple current level solenoid |
| US5975053A (en) * | 1997-11-25 | 1999-11-02 | Caterpillar Inc. | Electronic fuel injection quiet operation |
| US6000379A (en) * | 1997-11-25 | 1999-12-14 | Caterpillar Inc. | Electronic fuel injection quiet operation |
| DE19937722A1 (en) * | 1999-08-10 | 2001-02-15 | Bosch Gmbh Robert | Valve for the metered introduction of volatilized fuel into an intake duct of an internal combustion engine |
| US6425365B1 (en) | 2000-10-20 | 2002-07-30 | Ford Global Technologies, Inc. | Internal combustion engine shutdown method and control system |
| US6866204B2 (en) * | 2001-04-10 | 2005-03-15 | Siemens Vdo Automotive Corporation | End of valve motion detection for a spool control valve |
| US10851736B1 (en) * | 2019-06-03 | 2020-12-01 | Denso International America, Inc. | Dual armature purge valve |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4944276A (en) * | 1987-10-06 | 1990-07-31 | Colt Industries Inc | Purge valve for on board fuel vapor recovery systems |
| DE3802664C1 (en) * | 1988-01-29 | 1988-10-13 | Fa. Carl Freudenberg, 6940 Weinheim, De | |
| DE3830722A1 (en) * | 1988-09-09 | 1990-03-15 | Freudenberg Carl Fa | DEVICE FOR FEEDING FUEL FUEL COMPONENTS INTO THE SUCTION PIPE OF AN INTERNAL COMBUSTION ENGINE |
| JPH0646017B2 (en) * | 1989-07-14 | 1994-06-15 | 株式会社日立製作所 | Control device for internal combustion engine |
| US5060621A (en) * | 1989-08-28 | 1991-10-29 | Ford Motor Company | Vapor purge control system |
| DE4003036C1 (en) * | 1990-02-02 | 1990-11-29 | Fa. Carl Freudenberg, 6940 Weinheim, De | Electromagnetic valve for IC engine - incorporates auxiliary valve element operated by separate spring |
| DE4008266A1 (en) * | 1990-03-15 | 1991-09-19 | Daimler Benz Ag | ELECTROMAGNETIC VALVE |
| JP3173661B2 (en) * | 1990-12-28 | 2001-06-04 | 本田技研工業株式会社 | Evaporative fuel control system for internal combustion engine |
-
1992
- 1992-09-01 DE DE4229105A patent/DE4229105C1/de not_active Expired - Lifetime
-
1993
- 1993-04-30 DE DE59300427T patent/DE59300427D1/en not_active Expired - Fee Related
- 1993-04-30 EP EP93107039A patent/EP0585526B1/en not_active Expired - Lifetime
- 1993-07-29 BR BR9303048A patent/BR9303048A/en not_active IP Right Cessation
- 1993-08-31 CA CA002105244A patent/CA2105244C/en not_active Expired - Fee Related
- 1993-08-31 JP JP5215799A patent/JPH06159164A/en active Pending
- 1993-09-01 US US08/115,384 patent/US5341787A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2105244C (en) | 1999-06-15 |
| DE4229105C1 (en) | 1993-09-09 |
| CA2105244A1 (en) | 1994-03-02 |
| US5341787A (en) | 1994-08-30 |
| DE59300427D1 (en) | 1995-09-07 |
| BR9303048A (en) | 1994-03-22 |
| JPH06159164A (en) | 1994-06-07 |
| EP0585526A1 (en) | 1994-03-09 |
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