DE102010043314A1 - Dosing pump for conveying petrol to burner area of heating device of vehicle, has pump chamber volume area provided in cylinder for accommodating fluid by inlet opening during intake stroke of piston - Google Patents
Dosing pump for conveying petrol to burner area of heating device of vehicle, has pump chamber volume area provided in cylinder for accommodating fluid by inlet opening during intake stroke of piston Download PDFInfo
- Publication number
- DE102010043314A1 DE102010043314A1 DE102010043314A DE102010043314A DE102010043314A1 DE 102010043314 A1 DE102010043314 A1 DE 102010043314A1 DE 102010043314 A DE102010043314 A DE 102010043314A DE 102010043314 A DE102010043314 A DE 102010043314A DE 102010043314 A1 DE102010043314 A1 DE 102010043314A1
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- Germany
- Prior art keywords
- piston
- cylinder
- dosing pump
- inlet opening
- chamber volume
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B13/00—Pumps specially modified to deliver fixed or variable measured quantities
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
- F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow
- F04B17/044—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow using solenoids directly actuating the piston
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Dosierpumpe, beispielsweise zum Fördern von Kraftstoff zu einem Brennerbereich eines Fahrzeugheizgerätes, mit einem Zylinder und einem in dem Zylinder hin- und herbewegbaren Kolben, wobei in dem Zylinder ein Pumpkammervolumenbereich vorgesehen ist zur Aufnahme eines bei einem Ausstoßhub des Kolbens durch wenigstens eine Auslassöffnung hindurch zu fördernden Fluids durch wenigstens eine Einlassöffnung hindurch während eines Einlasshubs des Kolbens.The present invention relates to a metering pump, for example, for conveying fuel to a burner region of a vehicle heater, comprising a cylinder and a reciprocating in the cylinder piston, wherein in the cylinder a pumping chamber volume region is provided for receiving a at a discharge stroke of the piston by at least an outlet port through which fluids to be delivered pass through at least one inlet port during an intake stroke of the piston.
Eine derartige, z. B. aus der
Bei der in
Es ist die Aufgabe der vorliegenden Erfindung, eine Dosierpumpe vorzusehen insbesondere zum Fördern von Kraftstoff, bei welcher bei vereinfachtem Aufbau die Entstehung von Gasblasen in dem zu fördernden Fluid unterdrückt ist.It is the object of the present invention to provide a metering pump, in particular for conveying fuel, in which, with a simplified construction, the formation of gas bubbles in the fluid to be delivered is suppressed.
Erfindungsgemäß wird diese Aufgabe gelöst durch eine Dosierpumpe, insbesondere zum Fördern von Kraftstoff, mit einem Zylinder und einem in dem Zylinder hin- und herbewegbaren Kolben, wobei in dem Zylinder ein Pumpkammervolumenbereich vorgesehen ist zur Aufnahme eines bei einem Ausstoßhub des Kolbens durch wenigstens eine Auslassöffnung hindurch zu fördernden Fluids durch wenigstens eine Einlassöffnung hindurch während eines Einlasshubs des Kolbens.According to the invention, this object is achieved by a metering pump, in particular for conveying fuel, with a cylinder and a reciprocating piston in the cylinder, wherein in the cylinder a pumping chamber volume region is provided for receiving a at a discharge stroke of the piston through at least one outlet opening therethrough fluid to be delivered through at least one inlet opening during an intake stroke of the piston.
Dabei ist weiter vorgesehen, dass zumindest in einem Abschnitt einer Bewegungsphase, in welcher während eines Einlasshubs der nicht durch den Kolben belegte Bereich des Pumpkammervolumenbereichs zunimmt, die Einlassöffnung nicht vollständig durch den Kolben überdeckt ist.It is further provided that, at least in a portion of a movement phase in which increases during an intake stroke of not occupied by the piston portion of the pumping chamber volume range, the inlet opening is not completely covered by the piston.
Bei der vorliegenden Erfindung wird also zur Unterdrückung der Entstehung von Gasblasen in dem zu fördernden Fluid der im Verlauf eines Einlasshubs entstehende Unterdruck zumindest verringert, indem zumindest in einem Abschnitt der Phase, in welcher der nicht durch den Kolben belegte Bereich des Pumpkammervolumenbereichs zunimmt, die Einlassöffnung nicht vollständig überdeckt ist und somit der Unterdruck nicht entstehen oder weiter zunehmen muss.In the present invention, therefore, to suppress the formation of gas bubbles in the fluid to be conveyed, the negative pressure arising in the course of an intake stroke is at least reduced by increasing the inlet opening at least in a portion of the phase in which the region of the pumping chamber volume area not occupied by the piston increases is not completely covered and thus the negative pressure does not arise or must continue to increase.
Um einen möglichst kompakten Aufbau zu erreichen, kann vorgesehen sein, dass die wenigstens eine Einlassöffnung wenigstens bereichsweise zum Pumpkammervolumenbereich offen ist.In order to achieve as compact a construction as possible, it can be provided that the at least one inlet opening is open to the pump chamber volume area at least in regions.
Damit während des Auslasshubs das Ausströmen des zu fördernen Fluids über die Einlassöffnung verhindert wird, kann der Aufbau beispielsweise derart sein, dass der Einlassöffnung eine von zu förderndem Fluid nur in Einlassrichtung durchströmbare Einlasssperrventilanordnung zugeordnet ist.For example, in order to prevent the outflow of the fluid to be conveyed through the inlet port during the exhaust stroke, the structure may be such that the intake port is one of conveying fluid is associated with only in the inlet direction flow-through inlet check valve arrangement.
Ein möglichst geringer Unterdruck beim Ansaugen des zu fördernden Fluids kann dadurch erreicht werden, dass die Einlassöffnung in einer den Pumpkammervolumenbereich begrenzenden Bodenwand vorgesehen ist.The lowest possible negative pressure during the suction of the fluid to be delivered can be achieved by providing the inlet opening in a bottom wall delimiting the pump chamber volume area.
Um eine Anschlagsdämpfung des Kolbens bei Erreichen eines Förderhubendes zu erzielen, kann der Aufbau derart sein, dass in dem Zylinder ein durch den Kolben oder/und das Fluid verformbares Element vorgesehen ist, wobei bei einer besonders effektiv wirksamen Ausgestaltung vorgesehen sein kann, dass das verformbare Element kompressibel ist.In order to achieve a stop damping of the piston upon reaching a delivery stroke end, the structure may be such that in the cylinder a deformable by the piston and / or fluid element is provided, which may be provided in a particularly effective effective embodiment that the deformable Element is compressible.
Bei einer weiteren vorteilhaften Ausgestaltungsform kann weiter vorgesehen sein, dass das verformbare Element im Bereich der Bodenwand die Einlassöffnung umgebend angeordnet ist, wodurch sich eine Dichtwirkung zum Kolben hin ergeben kann.In a further advantageous embodiment, it can further be provided that the deformable element is arranged surrounding the inlet opening in the area of the bottom wall, as a result of which a sealing effect towards the piston can result.
Damit während des Einlasshubs kein bereits durch die Auslassöffnung hindurch gefördertes Fluid in den Pumpkammervolumenbereich zurückströmt, kann die Ausgestaltung der Dosierpumpe derart sein, dass der Auslassöffnung eine von zu förderndem Fluid nur in Auslassrichtung durchströmbare Auslasssperrventilanordnung zugeordnet ist.So that no fluid already conveyed through the outlet opening flows back into the pumping chamber volume area during the inlet stroke, the design of the dosing pump can be such that the outlet opening is assigned an outlet shut-off valve arrangement through which only fluid can be passed in the outlet direction.
In einer bevorzugten Ausgestaltungform kann weiter vorgesehen sein, dass die Auslassöffnung in einer Zylinderumfangswand vorgesehen ist, wodurch sich bei entsprechendem Abstand der Auslassöffnung von der Bodenwand durch in dem Zylinder verbleibendes Fluid eine Anschlagsdämpfung erzielen lassen kann.In a preferred embodiment, it can further be provided that the outlet opening is provided in a cylinder peripheral wall, whereby a stop attenuation can be achieved with a corresponding distance of the outlet opening from the bottom wall by fluid remaining in the cylinder.
Für ein besonders effektives Pumpen kann für den Auslasshub der Aufbau vorzugsweise derart sein, dass eine Vorspannvorrichtung zum Erzeugen einer den Kolben in Richtung Auslasshub beaufschlagenden Kraftwirkung vorgesehen ist. Darüberhinaus kann die Dosierpumpe für den Einlasshub derart ausgestaltet sein, dass eine Aktuatorvorrichtung zum Erzeugen einer den Kolben zur Durchführung eines Einlasshubs beaufschlagenden Kraftwirkung vorgesehen ist.For particularly effective pumping, the structure for the outlet stroke may preferably be such that a biasing device is provided for generating a force acting on the piston in the direction of the outlet stroke. In addition, the metering pump for the intake stroke can be designed such that an actuator device is provided for generating a force acting on the piston for performing an intake stroke.
Hierbei kann die Vorspannvorrichtung als eine Vorspannfeder und die Aktuatorvorrichtung als eine Magnetspule ausgestaltet sein. Dabei kann durch Erregung der Magnetspule der Kolben gegen den Widerstand der Vorspannfeder zum Vergößern des Pumpkammervolumenbereichs während eines Einlasshubs bewegt werden, während bei Beenden der Erregung die Vorspannfeder den Kolben zur Durchführung des Auslasshubs entsprechend bewegt.Here, the biasing device may be configured as a biasing spring and the actuator device as a magnetic coil. In this case, by energizing the magnetic coil, the piston can be moved against the resistance of the biasing spring for enlarging the pumping chamber volume range during an intake stroke, while at the end of the energization, the biasing spring moves the piston accordingly to perform the Auslasshubs.
Die vorliegende Erfindung wird nachfolgend mit Bezug auf die beiliegenden Figuren erläutert. Es zeigt:The present invention will be explained below with reference to the accompanying drawings. It shows:
Da der grundsätzliche Aufbau der in den
Die Dosierpumpen
In der in
Bei dieser Ausgestaltung ist der Kolben
Bei der in
Bei dieser Ausführungsform finden sowohl der Ein- als auch der Auslasshub zwischen den Linien G und H statt. Die Bewegungsphase, in welcher während eines Einlasshubs der nicht durch den Kolben
Eine Längsschnittdarstellung einer mit den vorangehend erläuterten Prinzipien wirksamen Dosierpumpe ist in
Der Kolben
In dieser Ausführungsform wird während des gesamten Einlasshubs über die Einlassöffnung
Bei Beendigung der Erregung der Elektromegnetspule
In
Bei einem größeren Abstand der Auslassöffnung
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102004062832 A1 [0002] DE 102004062832 A1 [0002]
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010043314A DE102010043314A1 (en) | 2010-11-03 | 2010-11-03 | Dosing pump for conveying petrol to burner area of heating device of vehicle, has pump chamber volume area provided in cylinder for accommodating fluid by inlet opening during intake stroke of piston |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010043314A DE102010043314A1 (en) | 2010-11-03 | 2010-11-03 | Dosing pump for conveying petrol to burner area of heating device of vehicle, has pump chamber volume area provided in cylinder for accommodating fluid by inlet opening during intake stroke of piston |
Publications (1)
Publication Number | Publication Date |
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DE102010043314A1 true DE102010043314A1 (en) | 2012-05-03 |
Family
ID=45935483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102010043314A Withdrawn DE102010043314A1 (en) | 2010-11-03 | 2010-11-03 | Dosing pump for conveying petrol to burner area of heating device of vehicle, has pump chamber volume area provided in cylinder for accommodating fluid by inlet opening during intake stroke of piston |
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DE (1) | DE102010043314A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL2028155B1 (en) * | 2021-05-05 | 2022-11-23 | Bravotech Holding B V | Fluid displacement device as well as a check valve |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19644915A1 (en) * | 1996-10-29 | 1998-04-30 | Bosch Gmbh Robert | high pressure pump |
EP1061254A2 (en) * | 1999-06-15 | 2000-12-20 | Isuzu Motors Limited | Common-rail fuel-injection system |
US6345608B1 (en) * | 1998-07-29 | 2002-02-12 | Robert Bosch Gmbh | Fuel supply system for an internal combustion engine |
DE4328621C2 (en) * | 1993-08-26 | 2002-11-28 | Thomas Magnete Gmbh | Electromagnetically operated pump, in particular metering pump |
EP1302664A1 (en) * | 2001-10-12 | 2003-04-16 | MAGNETI MARELLI POWERTRAIN S.p.A. | Variable-Flow High-Pressure Pump |
DE102004062832A1 (en) | 2004-12-27 | 2006-07-06 | J. Eberspächer GmbH & Co. KG | Fuel pumping device for motor vehicle heater, has pumping units which are operated parallely during supply operation, where part of pump units is formed with variable supply capacity for influencing volumetric flow of fluid to be supplied |
US7604462B2 (en) * | 2005-01-19 | 2009-10-20 | Denso Corporation | High pressure pump having plunger |
DE102008057365A1 (en) * | 2008-11-14 | 2010-05-20 | J. Eberspächer GmbH & Co. KG | Method for operating dosing pump, particularly for conveying fuel to vehicle heating device, involves rotating pump piston in clockwise and anticlockwise manner between two end positions defined by stop arrangements |
-
2010
- 2010-11-03 DE DE102010043314A patent/DE102010043314A1/en not_active Withdrawn
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4328621C2 (en) * | 1993-08-26 | 2002-11-28 | Thomas Magnete Gmbh | Electromagnetically operated pump, in particular metering pump |
DE19644915A1 (en) * | 1996-10-29 | 1998-04-30 | Bosch Gmbh Robert | high pressure pump |
US6345608B1 (en) * | 1998-07-29 | 2002-02-12 | Robert Bosch Gmbh | Fuel supply system for an internal combustion engine |
EP1061254A2 (en) * | 1999-06-15 | 2000-12-20 | Isuzu Motors Limited | Common-rail fuel-injection system |
EP1302664A1 (en) * | 2001-10-12 | 2003-04-16 | MAGNETI MARELLI POWERTRAIN S.p.A. | Variable-Flow High-Pressure Pump |
DE102004062832A1 (en) | 2004-12-27 | 2006-07-06 | J. Eberspächer GmbH & Co. KG | Fuel pumping device for motor vehicle heater, has pumping units which are operated parallely during supply operation, where part of pump units is formed with variable supply capacity for influencing volumetric flow of fluid to be supplied |
US7604462B2 (en) * | 2005-01-19 | 2009-10-20 | Denso Corporation | High pressure pump having plunger |
DE102008057365A1 (en) * | 2008-11-14 | 2010-05-20 | J. Eberspächer GmbH & Co. KG | Method for operating dosing pump, particularly for conveying fuel to vehicle heating device, involves rotating pump piston in clockwise and anticlockwise manner between two end positions defined by stop arrangements |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL2028155B1 (en) * | 2021-05-05 | 2022-11-23 | Bravotech Holding B V | Fluid displacement device as well as a check valve |
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R123 | Application deemed withdrawn due to non-payment of filing fee | ||
R409 | Internal rectification of the legal status completed | ||
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R012 | Request for examination validly filed | ||
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R081 | Change of applicant/patentee |
Owner name: EBERSPAECHER CLIMATE CONTROL SYSTEMS GMBH & CO, DE Free format text: FORMER OWNER: J. EBERSPAECHER GMBH & CO. KG, 73730 ESSLINGEN, DE Effective date: 20130131 |
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Representative=s name: WEICKMANN & WEICKMANN, DE Effective date: 20130131 Representative=s name: RUTTENSPERGER LACHNIT TROSSIN GOMOLL PATENT- U, DE Effective date: 20130131 Representative=s name: RUTTENSPERGER LACHNIT TROSSIN GOMOLL, PATENT- , DE Effective date: 20130131 |
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Representative=s name: RUTTENSPERGER LACHNIT TROSSIN GOMOLL PATENT- U, DE Representative=s name: RUTTENSPERGER LACHNIT TROSSIN GOMOLL, PATENT- , DE |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |