DE102020206927A1 - Valve for a high pressure fuel pump - Google Patents
Valve for a high pressure fuel pump Download PDFInfo
- Publication number
- DE102020206927A1 DE102020206927A1 DE102020206927.1A DE102020206927A DE102020206927A1 DE 102020206927 A1 DE102020206927 A1 DE 102020206927A1 DE 102020206927 A DE102020206927 A DE 102020206927A DE 102020206927 A1 DE102020206927 A1 DE 102020206927A1
- Authority
- DE
- Germany
- Prior art keywords
- valve
- valve element
- stop
- fuel pump
- pressure fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 230000005661 hydrophobic surface Effects 0.000 claims abstract description 10
- 239000000839 emulsion Substances 0.000 claims abstract description 5
- 230000002209 hydrophobic effect Effects 0.000 claims description 15
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 4
- 229910000077 silane Inorganic materials 0.000 claims description 4
- 229910000760 Hardened steel Inorganic materials 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 14
- 239000012528 membrane Substances 0.000 description 11
- 239000002344 surface layer Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- 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
- 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
-
- 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
- F02M25/022—Adding fuel and water emulsion, water or steam
- F02M25/0228—Adding fuel and water emulsion
-
- 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
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
- F02M43/02—Pumps peculiar thereto
-
- 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
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- 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
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
- F02M63/0035—Poppet valves, i.e. having a mushroom-shaped valve member that moves perpendicularly to the plane of the valve seat
-
- 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
- F04B53/102—Disc valves
- F04B53/1022—Disc valves having means for guiding the closure member axially
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
-
- 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
- F02M2200/02—Fuel-injection apparatus having means for reducing wear
-
- 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
- F02M2200/04—Fuel-injection apparatus having means for avoiding effect of cavitation, e.g. erosion
-
- 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
- F02M2200/90—Selection of particular materials
- F02M2200/9038—Coatings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Die Erfindung schlägt ein Ventil und eine Kraftstoff-Hochdruckpumpe (22) mit einem derartigen Ventil vor. Das Ventil weist u.a. ein Ventilelement (51) und einen Ventilanschlag (94), der die Bewegung des Ventilelements (51) in Öffnungsrichtung begrenzt, auf. Um ein hydraulisches Kleben des Ventilelements (51) an dem Ventilanschlag (94) bei der Verdichtung einer Benzin-Wasser-Emulsion zu verhindern, ist eine hydrophobe Oberfläche am Ventilelement (51) und/oder an dem Ventilanschlag (94) vorgesehen.The invention proposes a valve and a high-pressure fuel pump (22) with such a valve. The valve has, inter alia, a valve element (51) and a valve stop (94) which limits the movement of the valve element (51) in the opening direction. In order to prevent the valve element (51) from sticking hydraulically to the valve stop (94) when a gasoline-water emulsion is compressed, a hydrophobic surface is provided on the valve element (51) and / or on the valve stop (94).
Description
Stand der TechnikState of the art
Aus dem Stand der Technik, der Offenlegungsschrift
Vorteile der ErfindungAdvantages of the invention
Die vorliegende Erfindung basiert auf der Erkenntnis der Erfinder, dass es bei der Verdichtung einer Benzin-Wasser-Emulsion mittels einer Kraftstoff-Hochdruckpumpe zur Anhaftung von Wassertropfen an Oberflächen der Kraftstoff-Hochdruckpumpe kommen kann. Insbesondere können im Bereich von Ventilen der Kraftstoff-Hochdruckpumpe derartige Wassertropfen zu Hafteffekten bzw. Klebeffekten führen, die das Schließen der Ventile verlangsamen oder sogar verhindern. Insbesondere der Fall ist das im Bereich eines Spaltes zwischen einem beweglichen Ventilelement und einem Ventilanschlag, der die Bewegung des Ventilelements in Öffnungsrichtung begrenzt. Die Funktion der Pumpe kann hierdurch beeinträchtigt werden.The present invention is based on the inventors' knowledge that when a gasoline-water emulsion is compressed by means of a high-pressure fuel pump, water droplets can adhere to surfaces of the high-pressure fuel pump. In particular, in the area of the valves of the high-pressure fuel pump, such water droplets can lead to adhesive effects or sticking effects, which slow down or even prevent the closing of the valves. This is particularly the case in the area of a gap between a movable valve element and a valve stop which limits the movement of the valve element in the opening direction. This can impair the function of the pump.
Durch die Merkmale des Anspruchs 1 wird erreicht, dass die Oberfläche des Ventilelements und/oder des Ventilanschlags in diesem Bereich wasserabweisend ist. Es können folglich keine Wassertropfen anhaften und das Schließen des Ventils kann unbeeinträchtigt im Vergleich zu einem Betrieb der Hochdruckpumpe erfolgen, in welchem die Hochdruckpumpe lediglich einen Kraftstoff wie Benzin verdichtet.The features of claim 1 ensure that the surface of the valve element and / or of the valve stop is water-repellent in this area. Consequently, no water droplets can adhere and the closing of the valve can take place unimpaired in comparison to operation of the high-pressure pump in which the high-pressure pump only compresses a fuel such as gasoline.
Unter einer hydrophoben Oberfläche ist insbesondere eine Oberfläche zu verstehen, an der Wassertropfen nicht anhaften sondern abperlen, also gleichsam schweben. Insbesondere werden Oberflächen mit einem Kontaktwinkel von mehr als 90° gegenüber Wasser als hydrophob bezeichnet. Hydrophobe Oberflächen bestehen insbesondere aus hydrophoben Substanzen oder sind von diesen bedeckt.A hydrophobic surface is to be understood as meaning, in particular, a surface to which water droplets do not adhere but rather roll off, that is to say float, as it were. In particular, surfaces with a contact angle of more than 90 ° with respect to water are referred to as hydrophobic. Hydrophobic surfaces consist in particular of hydrophobic substances or are covered by them.
Da es sich bei den Komponenten des Ventils um mechanisch hoch belastete Bauteile handelt, ist es bevorzugt, dass der Ventilanschlag und/oder das Ventilelement aus einem gehärteten Stahl besteht, insbesondere aus einem gehärteten martensitischen Stahl. Bei der Härtung des Stahls entsteht gewöhnlich eine oxydische Randschicht, die bekanntermaßen hydrophile Eigenschaften aufweist. Um die hiermit verbundenen, oben bereits beschriebenen Beeinträchtigungen zu vermeiden, ist insbesondere vorgesehen, dass zumindest in dem dem Ventilelement zugewandten Bereich des Ventilanschlags auf der oxydischen Randschicht eine hydrophobe Schicht angeordnet ist und/oder zumindest in dem dem Ventilanschlag zugewandten Bereich des Ventilelements auf der oxydischen Randschicht eine hydrophobe Schicht angeordnet ist.Since the components of the valve are mechanically highly stressed parts, it is preferred that the valve stop and / or the valve element consists of a hardened steel, in particular a hardened martensitic steel. When the steel is hardened, an oxidic surface layer is usually formed, which is known to have hydrophilic properties. In order to avoid the associated impairments already described above, it is provided in particular that a hydrophobic layer is arranged on the oxidic edge layer at least in the area of the valve stop facing the valve element and / or at least in the area of the valve element facing the valve stop on the oxidic layer Edge layer a hydrophobic layer is arranged.
Bei der hydrophoben Schicht kann es sich um eine an sich bekannte Silanschicht handeln, die - wiederum beispielsweise - in einem Waschprozess aufbringbar ist. Das hat den Vorteil, dass die Aufbringung der Schicht im Rahmen der bestehenden Fertigungsprozesse kaum zusätzliche Kosten entstehen.The hydrophobic layer can be a known silane layer which - again, for example - can be applied in a washing process. This has the advantage that the application of the layer in the context of the existing manufacturing processes hardly incurs additional costs.
Alternativ zum Aufbringen einer hydrophoben Schicht auf die oxydische Randschicht kann im Rahmen der Erfindung die oxydische Randschicht abgetragen werden, sofern sich unter ihr ein hydrophobes Grundmaterial befindet. Das Abtragen der oxydischen Randschicht ist sehr selektiv möglich, allerdings in der Regel recht aufwändig.As an alternative to applying a hydrophobic layer to the oxide surface layer, the oxide surface layer can be removed within the scope of the invention, provided there is a hydrophobic base material underneath it. The removal of the oxidic surface layer is possible in a very selective manner, but it is usually quite time-consuming.
Es kann vorgesehen sein, dass das Ventilelement nicht vollflächig mit seiner dem Ventilanschlag zugewandten Seite an dem Ventilanschlag zur Anlage kommt, sondern dass der Ventilanschlag vorstehende Bereiche aufweist, die in Richtung zu dem Ventilelement vorstehen und an denen das Ventilelement zur Anlage kommen kann, um seine Bewegung in Öffnungsrichtung zu begrenzen; und/oder dass das Ventilelement vorstehende Bereiche aufweist, die in Richtung zu dem Ventilanschlag vorstehen und mit denen das Ventilelement an dem Ventilanschlag zur Anlage kommen kann.It can be provided that the valve element does not come into contact with the valve stop over its full surface with its side facing the valve stop, but that the valve stop has protruding areas that protrude in the direction of the valve element and on which the valve element can come into contact with its Limit movement in opening direction; and / or that the valve element has protruding areas which protrude in the direction of the valve stop and with which the valve element can come into contact with the valve stop.
In Weiterbildung hierzu kann vorgesehen sein, dass der zugewandte Bereich (des Ventilanschlags oder des Ventilelements), in dem eine hydrophobe Oberfläche vorgesehen ist, zumindest zwei vorstehende Bereiche umfasst, an denen das gegenüberliegende Bauteil (also Ventilelement oder Ventilanschlag) zur Anlage kommen kann, und zusätzlich zumindest einen weiteren Bereich umfasst, der zwischen den zumindest zwei vorstehenden Bereichen angeordnet ist. Das hat den Vorteil, dass selbst dann, wenn die hydrophobe Oberfläche im vorstehenden Bereich durch den Verschleiß, der aus der Wechselwirkung mit dem gegenüberliegenden Bauteil resultiert, ihre hydrophobe Eigenschaft einbüßt, bzw. selbst dann, wenn die hydrophobe Schicht im vorstehenden Bereich durch den Verschleiß abgetragen wird, gleichwohl die hydrophoben Eigenschaften bzw. die hydrophobe Schicht noch zwischen den vorstehenden Bereichen existiert und von dort aus weiterhin die Wirkung entfaltet, dass Wassertropfen nicht zwischen dem Ventilelement und dem Ventilanschlag haften.In a further development of this, it can be provided that the facing area (of the valve stop or the valve element), in which a hydrophobic surface is provided, comprises at least two protruding areas on which the opposite component (i.e. valve element or valve stop) can come to rest, and additionally comprises at least one further area which is arranged between the at least two protruding areas. This has the advantage that even if the hydrophobic surface in the protruding area loses its hydrophobic property due to wear resulting from the interaction with the opposite component, or even if the hydrophobic layer in the protruding area is due to wear is removed, although the hydrophobic properties or the hydrophobic layer still exists between the above areas and from there continues to develop the effect that water droplets do not adhere between the valve element and the valve stop.
Der Vorteil dieser Weiterbildung besteht also darin, dass die hydrophobe Oberfläche bzw. die hydrophobe Schicht nicht notwendigerweise die gleiche Beständigkeit gegen Verschleiß (beispielsweise nicht notwendigerweise die gleiche Härte) aufweisen muss, wie das darunterliegende Grundmaterial des Bauteils.The advantage of this development is that the hydrophobic surface or the hydrophobic layer does not necessarily have to have the same resistance to wear (for example not necessarily the same hardness) as the underlying base material of the component.
Sind die Kontaktflächen zwischen Ventilelement und Anschlagelement klein im Vergleich zu den Gesamtflächen der einander zugewandten Seiten des Ventilelements und Anschlagelements, zum Beispiel jeweils kleiner als 1/10 oder sogar kleiner als 1/50, so resultiert der oben genannte Vorteil im besonderen Maße.If the contact areas between the valve element and stop element are small compared to the total areas of the mutually facing sides of the valve element and stop element, for example each smaller than 1/10 or even smaller than 1/50, the above-mentioned advantage results to a particular degree.
Bei dem Ventil handelt es sich bevorzugt um ein Einlassventil der Kraftstoff-Hochdruckpumpe. Zusätzlich oder alternativ kann es sich auch um ein Auslassventil und/oder um ein Druckbegrenzungsventil und/oder um ein anderes Ventil der Kraftstoff-Hochdruckpumpe handeln.The valve is preferably an inlet valve of the high-pressure fuel pump. Additionally or alternatively, it can also be an outlet valve and / or a pressure limiting valve and / or another valve of the high-pressure fuel pump.
FigurenlisteFigure list
-
1 zeigt eine vereinfachte schematisierte Darstellung eines Kraftstoffsystems für eine Brennkraftmaschine.1 shows a simplified schematic representation of a fuel system for an internal combustion engine. -
2 zeigt eine an sich bekannte Kraftstoff-Hochdruckpumpe in einer Schnittdarstellung.2 shows a known high-pressure fuel pump in a sectional view. -
3 zeigt beispielhaft ein erfindungsgemäßes Ventil in einer Schnittdarstellung.3 shows an example of a valve according to the invention in a sectional view. -
4 zeigt eine Aufsicht auf die dem Ventilelement gegenüberliegende Seite des Ventilanschlags des Ventils aus3 .4th shows a plan view of the side of the valve stop of the valve opposite the valve element3 .
Beschreibung der AusführungsbeispieleDescription of the exemplary embodiments
Ein Kolben
Über ein Druckbegrenzungsventil
Die Kraftstoff-Hochdruckpumpe
In der Darstellung von
Das Pumpengehäuse
Der Membrandämpfer
Im Betrieb der Kraftstoff-Hochdruckpumpe
Das Einlassventil
Die dem Ventilanschlag
Die Bereiche des Ventilanschlags
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDED 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 was 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 PatentliteraturPatent literature cited
- DE 102018209155 A1 [0001]DE 102018209155 A1 [0001]
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020206927.1A DE102020206927A1 (en) | 2020-06-03 | 2020-06-03 | Valve for a high pressure fuel pump |
CN202110618442.2A CN113757015A (en) | 2020-06-03 | 2021-06-03 | Valve for high-pressure fuel pump |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020206927.1A DE102020206927A1 (en) | 2020-06-03 | 2020-06-03 | Valve for a high pressure fuel pump |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102020206927A1 true DE102020206927A1 (en) | 2021-12-09 |
Family
ID=78605038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102020206927.1A Withdrawn DE102020206927A1 (en) | 2020-06-03 | 2020-06-03 | Valve for a high pressure fuel pump |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN113757015A (en) |
DE (1) | DE102020206927A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018209155A1 (en) | 2018-06-08 | 2019-12-12 | Robert Bosch Gmbh | Fuel pump for compressing a fuel water emulsion |
-
2020
- 2020-06-03 DE DE102020206927.1A patent/DE102020206927A1/en not_active Withdrawn
-
2021
- 2021-06-03 CN CN202110618442.2A patent/CN113757015A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018209155A1 (en) | 2018-06-08 | 2019-12-12 | Robert Bosch Gmbh | Fuel pump for compressing a fuel water emulsion |
Also Published As
Publication number | Publication date |
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CN113757015A (en) | 2021-12-07 |
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