DE19952774B4 - Device for draining fluid from a system - Google Patents
Device for draining fluid from a system Download PDFInfo
- Publication number
- DE19952774B4 DE19952774B4 DE1999152774 DE19952774A DE19952774B4 DE 19952774 B4 DE19952774 B4 DE 19952774B4 DE 1999152774 DE1999152774 DE 1999152774 DE 19952774 A DE19952774 A DE 19952774A DE 19952774 B4 DE19952774 B4 DE 19952774B4
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- rail
- valve device
- outlet opening
- valve
- 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 - Fee Related
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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0014—Valves characterised by the valve actuating means
- F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
- F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
- F02M63/023—Means for varying pressure in common rails
- F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
- F02M63/025—Means for varying pressure in common rails by bleeding fuel pressure from the common rail
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/24—Fuel-injection apparatus with sensors
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Vorrichtung zum Ablassen von Kraftstoff aus einer Rail eines Common-Rail-Motors, wobei das System wenigstens eine Auslaßöffnung aufweist, und wobei die wenigstens eine Auslaßöffnung von einer Ventileinrichtung verschließbar ist, dadurch gekennzeichnet, dass die Ventileinrichtung (1) wenigstens ein Piezoelement (8) aufweist, durch welches die Ventileinrichtung (1) betätigbar ist, wobei die Auslaßöffnung (6) durch ein über das Piezoelement (8) bewegbaresVerschlußelement (5) entgegen der durch den Druck in dem System (2) auf das Verschlußelement (5) wirkenden Kräfte verschließbar ist.Device for discharging fuel from a rail of a common rail engine, wherein the system has at least one outlet opening, and wherein the at least one outlet opening is closable by a valve device, characterized in that the valve device (1) at least one piezoelectric element (8) by which the valve device (1) can be actuated, the outlet opening (6) being closable against the forces acting on the closure element (5) by the pressure in the system (2) by a closure element (5) movable over the piezo element (8) is.
Description
Die Erfindung betrifft eine Vorrichtung zum Ablassen von Kraftstoff aus einer Rail eines Common-Rail-Motors, nach der in den Oberbegriffen von Anspruch 1 und 6 näher definierten Art.The invention relates to a device for discharging fuel from a rail of a common rail engine, after the in the preambles of claim 1 and 6 defined in more detail.
Üblicherweise wird das Ablassen von Flüssigkeit aus einem unter hohem Druck stehenden System, insbesondere der Rail eines Common-Rail-Motors, zur Regelung des in dem System bzw. der Rail vorliegenden Drucks eingesetzt. Bei solchen Druckregelventilen ist es dabei allgemein üblich und bekannt, elektromagnetisch betätigte Ventile einzusetzen.Usually will be draining liquid from a system under high pressure, in particular the rail a common rail engine, for controlling the in the system or the Rail present pressure used. In such pressure control valves It is common practice and known to use electromagnetically actuated valves.
Da bei der Anwendung in Kraftfahrzeugen aus Sicherheitsgründen überwiegend Ventile eingesetzt werden, bei welchen durch den aktiven Einsatz, also der aktiven Bestromung des elektromagnetischen Betätigungselements, die Ventileinrichtung bzw. ein Verschlußelement der Ventileinrichtung gegen den in dem System vorliegenden Druck eine Auslaßöffnung verschließt, ist es erforderlich, die elektromagnetische Betätigungseinrichtung über den wenigstens annähernd gesamten Zeitraum zu bestromen, um die Auslaßöffnung geschlossen zu halten. Durch diese über einen sehr großen Zeitraum erfolgende Bestromung entstehen hohe thermische Verluste in der elektromagnetischen Betätigungseinrichtung, welche neben dem hohen Energiebedarf zu einer starken thermischen Belastung der genannten Elemente führen.Because when applied in motor vehicles For safety reasons predominantly Valves are used, in which by the active use, ie the active energization of the electromagnetic actuator, the valve device or a closure element of the valve device is closing an outlet opening against the pressure present in the system is it is necessary, the electromagnetic actuator over the at least nearly whole period to keep the outlet closed. Through this over a very big one During a period of time, high thermal losses occur in the electromagnetic actuator, which in addition to the high energy demand to a strong thermal Burden the said elements.
Ein derartiges Magnetventil, welches
eine Kugel als Sperr- bzw. Verschlußelement aufweist, zeigt beispielsweise
die
Außerdem kennt der Stand der
Technik aus dem Bereich von Kraftstoffeinspritzventilen bzw. Einspritzdüsen die
Betätigung
von Ventilen mittels des piezoelektrischen Effekts. Solche Einspritzdüsen, welche über Piezoaktuatoren
bzw. Piezostacks betätigt
werden, sind beispielsweise in der
Außerdem ist durch die
In der
Die
Es ist Aufgabe der Erfindung, eine Vorrichtung zum Ablassen von Flüssigkeit aus einem unter hohem Druck stehenden System als Druckregeleinrichtung bzw. Druckregelventil zu schaffen, welche eine schnelle und wenigstens annähernd verlustfreie Betätigung des Ventilelements ermöglicht.It is an object of the invention to provide a Device for draining liquid from a system under high pressure as a pressure control device or pressure regulating valve to provide which a fast and at least nearly lossless operation of the valve element allows.
Erfindungsgemäß wird diese Aufgabe durch die in den kennzeichnenden Teilen der Ansprüche 1 und 6 genannten Merkmale gelöst.According to the invention this object is achieved by the in the characterizing parts of claims 1 and 6 mentioned features solved.
Durch den Einsatz eines Piezoaktuators bzw. eines Piezoelements zur Betätigung der Ventileinrichtung ergibt sich der Vorteil, daß es durch eine Bestromung des Piezoelements, also durch ein Halten der Ventileinrichtung in einer bestimmten Stellung, zu keinen elektrischen Verlusten und damit zu keiner thermischen Belastung durch die damit verbundene Temperaturerhöhung kommt.By the use of a Piezoaktuators or a piezoelectric element for actuation the valve device has the advantage that it passes through an energization of the piezoelectric element, ie by holding the valve device in a certain position, to no electrical losses and so that no thermal stress from the associated temperature increase comes.
Aufgrund der sehr schnellen Schaltgeschwindigkeit des Piezoelements ergibt sich außerdem der Vorteil einer extrem schnellen Druckregelung, da das Öffnen bzw. Schließen der Ventileinrichtung durch das Piezoelement auch bei hohem anstehenden Gegendruck extrem schnell ablaufen kann.Due to the very fast switching speed The piezoelectric element also gives the advantage of an extreme fast pressure control, since the opening or Close the valve device by the piezo element even at high pending Counterpressure can run extremely fast.
Ein weiterer Vorteil liegt darin begründet, daß das Piezoelement in hohem Maße druck- und temperaturkompensiert arbeitet und so keinerlei negative Einflüsse durch eine Erhöhung oder Erniedrigung von Druck und Temperatur auf die Druckregelung und deren Betätigungsgeschwindigkeit erfolgt.Another advantage is in it justified that this Piezo element to a great extent Pressure- and temperature-compensated work and so no negative influences an increase or lowering of pressure and temperature to the pressure control and their operating speed he follows.
Außerdem ergibt sich die besonders vorteilhafte Möglichkeit der Speicherung des Drucks in dem System über einen längeren Zeitraum, da es sehr einfach und verlustfrei möglich ist, die Piezoladung und damit die Stellung der über das Piezoelement betätigten Ventileinrichtung zu speichern bzw. ähnlich einem Kondensator annähernd verlustfrei aufrecht zu erhalten. Insbesondere bei einem Common-Rail-Motor bedeutet dies, daß ein extrem schneller Systemstart ermöglicht wird, da durch die Systemdruckspeicherung die ansonsten erforderliche Druckaufbauphase in der Rail eines Common-Rail-Motors komplett vermieden oder zumindest zeitlich stark reduziert wird.In addition, the results especially advantageous possibility storing the pressure in the system for a longer period of time as it is very simple and lossless possible is, the piezoelectric charge and thus the position of the actuated via the piezoelectric element valve device to store or similar approximating a capacitor to maintain lossless. Especially with a common rail engine this means that a extremely fast system startup possible is because of the system pressure storage the otherwise required Pressure build-up phase in the rail of a common-rail engine completely avoided or at least greatly reduced in time.
In einer besonders vorteilhaften Ausgestaltung der Erfindung wird das Piezoelement so eingesetzt, daß die über ein Verschlußelement und einen Ventilschaft direkt oder indirekt auf das Piezoelement wirkenden Kräfte, welche aufgrund des Drucks in dem System entstehen, durch eine Spannungsmessung an dem Piezoelement erfaßbar sind.In a particularly advantageous Embodiment of the invention, the piezoelectric element is used in such a way that's over one closure element and a valve stem acting directly or indirectly on the piezoelectric element forces which arise due to the pressure in the system, by a voltage measurement detectable on the piezoelectric element are.
Dadurch ergibt sich der Vorteil, daß auf den Einsatz von Drucksensoren in dem unter hohem Druck stehenden System verzichtet werden kann, weil das Druckregelventil bzw. die Ventileinrichtung zum Ablassen von Flüssigkeit durch ihren Aufbau mit dem Piezoelement selbst als Drucksensor eingesetzt werden kann. Insbesondere beim Einsatz in der Rail eines Common-Rail-Motors ergibt sich hier die Möglichkeit, den ansonsten benötig ten Drucksensor einzusparen, was wiederum Vorteile bezüglich der Kosten und des für die Rail und deren Anbauelemente erforderlichen Bauraums ermöglicht.This has the advantage that can be dispensed with the use of pressure sensors in the system under high pressure, because the pressure control valve or the valve means for discharging liquid can be used by their construction with the piezoelectric element itself as a pressure sensor. In particular, when used in the rail of a common rail engine results here the possibility probability to save the otherwise needed pressure sensor, which in turn allows advantages in terms of cost and space required for the rail and its attachments.
Weitere vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und den anhand der Zeichnungen nachfolgend dargestellten Ausführungsbeispielen.Further advantageous embodiments and further developments of the invention will become apparent from the dependent claims and the embodiments illustrated below with reference to the drawings.
Es zeigt:It shows:
In
Die Ventileinrichtung
Über
die Regel- bzw. Steuereinrichtung
Die Regelung des im Inneren der Rail
Aufgrund des extrem schnellen Ansprechens des
Piezostacks
Die Ventileinrichtung
Auch beim Einsatz von geregelten
Hochdruckpumpen zur Erzeugung des hohen annähernd konstanten Drucks im
Inneren der Rail
Lediglich die Messung des in der
Rail
Für
beide oben beschriebenen Ausführungsbeispiele
ist es prinzipiell denkbar, daß anstatt
der dargestellten, direkten Betätigung
des Ventilschafts
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999152774 DE19952774B4 (en) | 1999-11-03 | 1999-11-03 | Device for draining fluid from a system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1999152774 DE19952774B4 (en) | 1999-11-03 | 1999-11-03 | Device for draining fluid from a system |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19952774A1 DE19952774A1 (en) | 2001-05-23 |
DE19952774B4 true DE19952774B4 (en) | 2004-03-11 |
Family
ID=7927696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1999152774 Expired - Fee Related DE19952774B4 (en) | 1999-11-03 | 1999-11-03 | Device for draining fluid from a system |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19952774B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012204251A1 (en) * | 2012-03-19 | 2013-09-19 | Continental Automotive Gmbh | Method for operating a fuel injection system and fuel injection system with injectors with piezo direct drive |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10138756A1 (en) * | 2001-08-07 | 2003-02-20 | Bosch Gmbh Robert | High-pressure fuel storage |
JP2003097749A (en) * | 2001-09-26 | 2003-04-03 | Denso Corp | Electromagnetic fluid control device |
DE10222895A1 (en) * | 2002-05-23 | 2003-12-11 | Bosch Gmbh Robert | High pressure accumulator for fuel injection systems with integrated pressure control valve |
DE102004002964A1 (en) * | 2004-01-21 | 2005-08-11 | Robert Bosch Gmbh | Pressure control valve for a high-pressure accumulator of an internal combustion engine |
JP2008045486A (en) * | 2006-08-16 | 2008-02-28 | Yanmar Co Ltd | Accumulator fuel injection device |
DE102014206060A1 (en) * | 2014-03-31 | 2015-10-01 | Robert Bosch Gmbh | Pressure control valve for a high-pressure accumulator |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3103061A1 (en) * | 1981-01-30 | 1982-08-05 | Daimler-Benz Ag, 7000 Stuttgart | Piezoelectric actuator |
DE3037078C2 (en) * | 1980-10-01 | 1982-08-12 | Daimler-Benz Ag, 7000 Stuttgart | Electrically controlled actuator |
DE3784627T2 (en) * | 1986-11-07 | 1993-06-24 | Elasis Sistema Ricerca Fiat | PRESSURE REGULATING SOLENOID VALVE, ESPECIALLY FOR HIGH PRESSURE SYSTEMS OF INJECTION SYSTEMS FOR COMBUSTION ENGINES. |
DE19540155A1 (en) * | 1995-10-27 | 1997-04-30 | Huber Motorenbau Inst | Servo valve for an injection nozzle |
DE19701288A1 (en) * | 1997-01-16 | 1998-07-23 | Daimler Benz Ag | Motor vehicle internal combustion engine fuel injection valve |
DE19827287A1 (en) * | 1998-06-19 | 1999-12-23 | Bosch Gmbh Robert | Fuel injection valve-pressure sensor combination for fuel injection system |
-
1999
- 1999-11-03 DE DE1999152774 patent/DE19952774B4/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3037078C2 (en) * | 1980-10-01 | 1982-08-12 | Daimler-Benz Ag, 7000 Stuttgart | Electrically controlled actuator |
DE3103061A1 (en) * | 1981-01-30 | 1982-08-05 | Daimler-Benz Ag, 7000 Stuttgart | Piezoelectric actuator |
DE3784627T2 (en) * | 1986-11-07 | 1993-06-24 | Elasis Sistema Ricerca Fiat | PRESSURE REGULATING SOLENOID VALVE, ESPECIALLY FOR HIGH PRESSURE SYSTEMS OF INJECTION SYSTEMS FOR COMBUSTION ENGINES. |
DE19540155A1 (en) * | 1995-10-27 | 1997-04-30 | Huber Motorenbau Inst | Servo valve for an injection nozzle |
DE19701288A1 (en) * | 1997-01-16 | 1998-07-23 | Daimler Benz Ag | Motor vehicle internal combustion engine fuel injection valve |
DE19827287A1 (en) * | 1998-06-19 | 1999-12-23 | Bosch Gmbh Robert | Fuel injection valve-pressure sensor combination for fuel injection system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012204251A1 (en) * | 2012-03-19 | 2013-09-19 | Continental Automotive Gmbh | Method for operating a fuel injection system and fuel injection system with injectors with piezo direct drive |
DE102012204251B4 (en) * | 2012-03-19 | 2013-12-12 | Continental Automotive Gmbh | Method for operating a fuel injection system and fuel injection system with injectors with piezo direct drive |
US9556839B2 (en) | 2012-03-19 | 2017-01-31 | Continental Automotive Gmbh | Method for operating a fuel injection system and fuel injection system comprising fuel injection valves with a piezo direct-drive |
Also Published As
Publication number | Publication date |
---|---|
DE19952774A1 (en) | 2001-05-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: DAIMLER AG, 70327 STUTTGART, DE |
|
8320 | Willingness to grant licenses declared (paragraph 23) | ||
8339 | Ceased/non-payment of the annual fee |