DE102018204160A1 - High-pressure pump and fuel delivery system for cryogenic fuels - Google Patents
High-pressure pump and fuel delivery system for cryogenic fuels Download PDFInfo
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- DE102018204160A1 DE102018204160A1 DE102018204160.1A DE102018204160A DE102018204160A1 DE 102018204160 A1 DE102018204160 A1 DE 102018204160A1 DE 102018204160 A DE102018204160 A DE 102018204160A DE 102018204160 A1 DE102018204160 A1 DE 102018204160A1
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- pump
- pressure
- pump piston
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- fuel
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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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive
-
- 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
-
- 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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0245—High pressure fuel supply systems; Rails; Pumps; Arrangement of valves
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/442—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston means preventing fuel leakage around pump plunger, e.g. fluid barriers
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/464—Inlet valves of the check valve type
-
- 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
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
- F04B15/08—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure the liquids having low boiling points
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
-
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
-
- 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
- F02M2200/26—Fuel-injection apparatus with elastically deformable elements other than coil springs
-
- 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
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
- F04B15/08—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure the liquids having low boiling points
- F04B2015/081—Liquefied gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
Hochdruckförderpumpe (1) für kryogene Kraftstoffe mit einem Pumpengehäuse (2), in dem eine stufenförmige Längsbohrung (17) ausgebildet ist. In der Längsbohrung (17) ist ein Ansaugraum (50) ausgebildet, der mittels mindestens eines Verbindungskanals (26) mit einem Hochdruckraum (12) verbindbar ist. Zum Öffnen und Schließen des mindestens einen Verbindungskanals (26) ist in dem Hochdruckraum (12) ein Saugventilelement (140) angeordnet. Weiterhin ist in der Längsbohrung (17) ein hubbeweglicher Pumpenkolben (4) geführt und ein Endbereich (46) des Pumpenkolbens (4) begrenzt den Hochdruckraum (12). Darüber hinaus weist der Pumpenkolben (4) im Endbereich (46) eine Ausnehmung (20) auf, in dem das Saugventilelement (140) zumindest teilweise aufgenommen ist. Außerdem ist ein Dichtspalt (22) bezüglich einer Längsachse (8) des Pumpengehäuses (2) zwischen der Längsbohrung (17) und dem Pumpenkolben (4) ausgebildet und zumindest ein Teil einer Wandung (21) der Ausnehmung (20) ist auf Höhe dieses Dichtspalts (22) angeordnet.High-pressure pump (1) for cryogenic fuels with a pump housing (2), in which a stepped longitudinal bore (17) is formed. In the longitudinal bore (17), a suction chamber (50) is formed, which is connectable by means of at least one connecting channel (26) with a high-pressure chamber (12). For opening and closing the at least one connecting channel (26), a suction valve element (140) is arranged in the high-pressure chamber (12). Furthermore, a liftable pump piston (4) is guided in the longitudinal bore (17) and an end region (46) of the pump piston (4) delimits the high-pressure chamber (12). In addition, the pump piston (4) in the end region (46) has a recess (20) in which the suction valve element (140) is at least partially accommodated. In addition, a sealing gap (22) with respect to a longitudinal axis (8) of the pump housing (2) between the longitudinal bore (17) and the pump piston (4) is formed and at least part of a wall (21) of the recess (20) is at the level of this sealing gap (22) arranged.
Description
Die Erfindung betrifft eine Hochdruckförderpumpe und eine Kraftstofffördereinrichtung für kryogene Kraftstoffe nach dem Oberbegriff des Anspruchs 1. Diese finden beispielsweise Anwendung bei Brennkraftmaschinen von Kraftfahrzeugen mit einem kryogenen Kraftstoff-Antrieb, insbesondere mit Erdgas.The invention relates to a high-pressure feed pump and a fuel delivery device for cryogenic fuels according to the preamble of
Stand der TechnikState of the art
In der nichtvorveröffentlichten Schrift
Durch die Hubbewegung des Kolbens wird der kryogene Kraftstoff in dem Zylinder komprimiert. Dadurch entsteht jedoch eine Leckage über einen Spalt zwischen dem Zylinder und dem Kolben, was den Wirkungsgrad des Kolbenverdichters verschlechtert. Daher ist in diesem Spalt in der
Die Leckageminimierungshülse muss dabei jedoch so vom Druck beaufschlagt werden, dass diese sich auch auf die Weise zusammenziehst, so dass der Spalt verringert wird. Daher liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine Hochdruckförderpumpe bereitzustellen, bei der auch ohne Einsatz einer Leckageminimierungshülse Leckage im Spalt minimiert wird.However, the leakage minimizing sleeve must be pressurized so that they also contract in the way, so that the gap is reduced. Therefore, the object of the present invention is to provide a high-pressure delivery pump in which leakage in the gap is minimized even without the use of a leakage minimization sleeve.
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße Hochdruckförderpumpe mit den kennzeichnenden Merkmalen des Anspruchs 1 weist demgegenüber Vorteil auf, dass ohne zusätzliches Bauteil eine Minimierung der Leckage zwischen dem Zylinder und dem Pumpenkolben erzielt wird und so der Wirkungsgrad der Hochdruckförderpumpe optimiert wird.The high-pressure pump according to the invention with the characterizing features of
Dazu weist die Hochdruckförderpumpe für kryogene Kraftstoffe ein Pumpengehäuse auf, in dem eine stufenförmige Längsbohrung ausgebildet ist. Darin ist wiederum ein Ansaugraum ausgebildet, der mittels mindestens einem Verbindungskanal mit einem Hochdruckraum verbindbar ist. Zum Öffnen und Schließen des mindestens einen Verbindungskanals ist weiterhin in dem Hochdruckraum ein Saugventilelement angeordnet. In der Längsbohrung ist ein hubbeweglicher Pumpenkolben geführt und ein Endbereich des Pumpenkolbens begrenzt dabei den Hochdruckraum. Darüber hinaus weist der Pumpenkolben im Endbereich eine Ausnehmung auf, in dem das Saugventilelement zumindest teilweise aufgenommen ist, wobei zumindest ein Teil einer Wandung der Ausnehmung auf Höhe eines Dichtspalts bezüglich einer Längsachse des Pumpengehäuses zwischen der Längsbohrung und dem Pumpenkolben angeordnet ist. Vorteilhafterweise ist die Wandung des Pumpenkolbens durch den Druck des kryogenen Kraftstoffs elastisch verformbar, um den Dichtspalt durch den Innendruck der Wandung zu verkleinern.For this purpose, the high-pressure pump for cryogenic fuels on a pump housing, in which a stepped longitudinal bore is formed. Therein, in turn, a suction space is formed, which is connectable by means of at least one connecting channel with a high-pressure chamber. For opening and closing the at least one connecting channel, a suction valve element is furthermore arranged in the high-pressure chamber. In the longitudinal bore a liftable pump piston is guided and an end portion of the pump piston limits the high-pressure chamber. In addition, the pump piston has a recess in the end region, in which the suction valve element is at least partially received, wherein at least a portion of a wall of the recess is arranged at the level of a sealing gap with respect to a longitudinal axis of the pump housing between the longitudinal bore and the pump piston. Advantageously, the wall of the pump piston is elastically deformable by the pressure of the cryogenic fuel in order to reduce the sealing gap by the internal pressure of the wall.
So kann der Dichtspalt durch die Verformung der Wandung den Dichtspalt verkleinern oder sogar abdichten, um die Leckage zwischen der Längsbohrung und dem Pumpenkolben zu minimieren und so eine gute Funktionsweise der Hochdruckförderpumpe zu erzielen.Thus, the sealing gap can reduce or even seal the sealing gap by the deformation of the wall to minimize the leakage between the longitudinal bore and the pump piston and thus to achieve a good operation of the high pressure pump.
In erster vorteilhafter Weiterbildung ist die Ausnehmung des Pumpenkolbens konisch ausgebildet. So kann diese an die Form des Ansaugventilelements angepasst werden, so dass eine optimale Aufnahme des Ansaugventilelements erfolgt und damit ein optimales Zusammenspiel der Funktionsweise von Ansaugventilelement und Pumpenkolben.In a first advantageous embodiment, the recess of the pump piston is conical. So this can be adapted to the shape of the intake valve element, so that an optimal intake of the intake valve takes place and thus an optimal interaction of the operation of intake valve and pump piston.
In vorteilhafter Weiterbildung ist es vorgesehen, dass die Ausnehmung als Sacklochbohrung von einer Stirnseite des Pumpenkolbens ausgeht. Die Stirnseite weist dabei in Richtung des Saugventilelements.In an advantageous embodiment, it is provided that the recess starts as a blind hole from an end face of the pump piston. The front side points in the direction of the suction valve element.
In weiterer Ausgestaltung der Erfindung ist es vorteilhaft vorgesehen, dass die Ausnehmung des Pumpenkolbens zylindrisch ausgebildet ist. So kann die Wandung durch den Innendruck in einfacher und optimierter Weise den Dichtspalt verkleinern und so die Leckage reduzieren.In a further embodiment of the invention, it is advantageously provided that the recess of the pump piston is cylindrical. Thus, the wall can reduce the sealing gap by the internal pressure in a simple and optimized manner, thus reducing the leakage.
In vorteilhafter Weiterbildung ist es vorgesehen, dass das Saugventilelement mit einem Dichtsitz ein Saugventil ausbildet. Vorteilhafterweise ist der Dichtsitz konisch ausgebildet. So wird eine verbesserte Funktion des Saugventils in der Hochdruckförderpumpe und damit eine Optimierung der Dichtheit am Dichtsitz erzielt.In an advantageous embodiment, it is provided that the suction valve element forms a suction valve with a sealing seat. Advantageously, the sealing seat is conical. Thus, an improved function of the suction valve in the high pressure pump and thus an optimization of the tightness of the sealing seat is achieved.
In weiterer Ausgestaltung der Erfindung ist es vorteilhaft vorgesehen, dass das Saugventilelement mittels einer Feder mit einer Kraft in Richtung des Dichtsitzes beaufschlagt ist. So ist der mindestens eine Verbindungskanal schließbar und damit die Verbindung zwischen dem Ansaugraum und dem Hochdruckraum.In a further embodiment of the invention, it is advantageously provided that the suction valve element is acted upon by a spring with a force in the direction of the sealing seat. Thus, the at least one connecting channel can be closed and thus the Connection between the suction chamber and the high-pressure chamber.
In vorteilhafter Weiterbildung ist es vorgesehen, dass der Pumpenkolben mittels einer Feder mit einer Kraft entgegen der Richtung des Ansaugraums beaufschlagt ist. So kann der Pumpenkolben durch Längsbewegungen den kryogenen Kraftstoff komprimieren und dieser durch die Hochdruckförderpumpe gefördert werden.In an advantageous embodiment, it is provided that the pump piston is acted upon by a spring with a force against the direction of the suction. Thus, the pump piston can compress the cryogenic fuel by longitudinal movements and this be promoted by the high-pressure pump.
Erfindungsgemäß weist die Kraftstofffördereinrichtung für kryogene Kraftstoffe einen Tank, die erfindungsgemäße Hochdruckförderpumpe und eine Zulaufleitung auf, über welche Zulaufleitung der Hochdruckförderpumpe kryogener Kraftstoff aus dem Tank in den Ansaugraum zuführbar ist.According to the invention, the fuel delivery device for cryogenic fuels has a tank, the high-pressure feed pump according to the invention and a feed line, via which feed line of the high-pressure feed pump cryogenic fuel can be supplied from the tank into the intake space.
In vorteilhafter Weiterbildung ist es vorgesehen, dass in dem Tank eine weitere Förderpumpe angeordnet ist, welche Kraftstoff aus dem Tank über die Zulaufleitung in den Ansaugraum der Hochdruckförderpumpe fördert. Dies ermöglicht eine variable Anordnung der Hochdruckförderpumpe, so dass diese beispielsweise relativ nahe zum Tankbehälter, oder aber relativ nahe zur Brennkraftmaschine angeordnet werden kann.In an advantageous embodiment, it is provided that in the tank, a further feed pump is arranged, which promotes fuel from the tank via the supply line into the suction of the high pressure pump. This allows a variable arrangement of the high-pressure feed pump, so that it can be arranged, for example, relatively close to the tank container, or relatively close to the internal combustion engine.
Figurenlistelist of figures
In der Zeichnung sind Ausführungsbeispiele einer erfindungsgemäßen Hochdruckförderpumpe und einer Kraftstofffördereinrichtung dargestellt. Es zeigt
-
1 ein Ausführungsbeispiel einer erfindungsgemäßen Kraftstofffördereinrichtung mit einer erfindungsgemäßen Hochdruckförderpumpe im Längsschnitt, -
2 ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Hochdruckförderpumpe im Bereich der Ausnehmung des Pumpenkolbens im Längsschnitt.
-
1 An embodiment of a fuel conveyor according to the invention with a high-pressure pump according to the invention in longitudinal section, -
2 a further embodiment of a high-pressure pump according to the invention in the region of the recess of the pump piston in longitudinal section.
Beschreibung der AusführungsbeispieleDescription of the embodiments
In der
Der Tank
Der Tank
Die Hochdruckförderpumpe
Weiterhin ist in der Längsbohrung
Weiterhin weist der Pumpenkolben
Mit seinem dem Ansaugraum
Funktionsweise der KraftstofffördereinrichtungOperation of the fuel conveyor
Bei Betrieb der Kraftstofffördereinrichtung
Während der Längsbewegung des Pumpenkolbens
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 102017219341 A1 [0002, 0003]DE 102017219341 A1 [0002, 0003]
Claims (11)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018204160.1A DE102018204160A1 (en) | 2018-03-19 | 2018-03-19 | High-pressure pump and fuel delivery system for cryogenic fuels |
PCT/EP2019/051641 WO2019179674A1 (en) | 2018-03-19 | 2019-01-23 | High-pressure delivery pump and fuel delivery device for cryogenic fuels |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102018204160.1A DE102018204160A1 (en) | 2018-03-19 | 2018-03-19 | High-pressure pump and fuel delivery system for cryogenic fuels |
Publications (1)
Publication Number | Publication Date |
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DE102018204160A1 true DE102018204160A1 (en) | 2019-09-19 |
Family
ID=65228551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102018204160.1A Withdrawn DE102018204160A1 (en) | 2018-03-19 | 2018-03-19 | High-pressure pump and fuel delivery system for cryogenic fuels |
Country Status (2)
Country | Link |
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DE (1) | DE102018204160A1 (en) |
WO (1) | WO2019179674A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017219341A1 (en) | 2017-10-27 | 2019-05-02 | Robert Bosch Gmbh | piston compressor |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3220202A (en) * | 1964-05-15 | 1965-11-30 | Union Carbide Corp | Apparatus for storing and pumping a volatile liquid |
DE19848035A1 (en) * | 1998-10-17 | 2000-04-20 | Bosch Gmbh Robert | Radial piston pump for high fuel pressure in IC engines with common-rail injection system has suction valve closure spring supported on pump piston and contained in long piston bore |
JP4304887B2 (en) * | 2001-06-19 | 2009-07-29 | 株式会社デンソー | Fuel supply system for alternative fuels |
DE102008043839A1 (en) * | 2008-11-19 | 2010-05-20 | Robert Bosch Gmbh | High pressure pump, particularly fuel pump for fuel injection units of air compression, self igniting internal combustion engines, comprises pump assembly which has pump piston and pump working chamber that is limited by pump piston |
JP2010229898A (en) * | 2009-03-27 | 2010-10-14 | Bosch Corp | Fuel supply pump |
DE102016210731A1 (en) * | 2016-06-16 | 2017-12-21 | Robert Bosch Gmbh | Feed pump for cryogenic fuels |
-
2018
- 2018-03-19 DE DE102018204160.1A patent/DE102018204160A1/en not_active Withdrawn
-
2019
- 2019-01-23 WO PCT/EP2019/051641 patent/WO2019179674A1/en active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017219341A1 (en) | 2017-10-27 | 2019-05-02 | Robert Bosch Gmbh | piston compressor |
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WO2019179674A1 (en) | 2019-09-26 |
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