WO2020108995A1 - Soupape d'injection pour un système d'injection d'eau d'un moteur à combustion interne, ainsi que système d'injection d'eau comprenant une soupape d'injection de ce type - Google Patents

Soupape d'injection pour un système d'injection d'eau d'un moteur à combustion interne, ainsi que système d'injection d'eau comprenant une soupape d'injection de ce type Download PDF

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Publication number
WO2020108995A1
WO2020108995A1 PCT/EP2019/081157 EP2019081157W WO2020108995A1 WO 2020108995 A1 WO2020108995 A1 WO 2020108995A1 EP 2019081157 W EP2019081157 W EP 2019081157W WO 2020108995 A1 WO2020108995 A1 WO 2020108995A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
injection valve
inlet
injection system
valve
Prior art date
Application number
PCT/EP2019/081157
Other languages
German (de)
English (en)
Inventor
Petr Novak
Michael Schaefer
Markus Deissler
Ingmar Burak
Tilo STARKERT
Radek Malec
Original Assignee
Robert Bosch Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Priority to CN201980078726.8A priority Critical patent/CN113167194A/zh
Publication of WO2020108995A1 publication Critical patent/WO2020108995A1/fr

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
    • 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
    • F02M25/0221—Details of the water supply system, e.g. pumps or 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
    • 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
    • F02M25/025—Adding water
    • 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
    • F02M25/025—Adding water
    • F02M25/028—Adding water into the charge intakes
    • 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
    • F02M25/025—Adding water
    • F02M25/03—Adding water into the cylinder or the pre-combustion 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings
    • 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
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F16L41/088—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe fixed using an elastic grommet between the extremity of the tube and the wall
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/02—Energy absorbers; Noise absorbers
    • F16L55/027—Throttle passages
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0017—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor related to fuel pipes or their connections, e.g. joints or sealings
    • 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
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • Injection valve for a water injection system of an internal combustion engine and water injection system with such an injection valve
  • the invention relates to an injection valve for a water injection system of a combustion engine with the features of the preamble of claim 1.
  • the combustion engine can in particular be a gasoline engine.
  • the invention relates to a water injection system for an internal combustion engine with an injection valve according to the invention.
  • DE 10 2015 208 472 A1 shows an example of an internal combustion engine with a water injection device which comprises a water tank for storing water, a pump for conveying the water and a water injection valve for injecting water.
  • the pump is connected on the inlet side to the water tank via a first line and on the outlet side to the water injection valve via a second line.
  • the pump can be operated in the opposite direction of delivery.
  • a water injection device for an internal combustion engine which comprises at least two injection valves or water injectors which are emptied one after the other by reversing the conveying direction of a delivery unit.
  • the injectors or water injectors therefore do not have to be designed to withstand ice pressure.
  • the invention has for its object to provide an injection valve for a Wasserein injection system of an internal combustion engine, which is particularly easy and / or quick to empty in a suckback operation of the water injection system to prevent icing of the injection valve and thus damage to the injection valve.
  • an injection valve comprises an annular solenoid for acting on a stroke are anchors connected to a valve member.
  • the injection valve further comprises a hollow cylindrical core which is at least partially surrounded by the magnetic coil and forms an inlet connection or is connected to an inlet connection, via which the injection valve can be supplied with water from a distribution line.
  • a body is inserted into the inlet connection piece, which is penetrated in the axial direction by a flow channel which defines an inlet opening for supplying the injection valve with water from the distributor line.
  • the inlet opening is formed not by the inlet connector, but by the body inserted into the inlet connector.
  • the body thus reduces the free flow cross-section available for the water supply to the injection valve.
  • a dead volume present in the inlet port is minimized, which must be emptied to avoid icing of the injection valve. This means that less water has to be sucked back out of the injection valve.
  • the body is therefore preferably inserted into the inlet port in such a way that no cavity remains between the body and the inlet port, which is directly or indirectly in fluid communication with the flow channel formed in the body. To ensure this, for example, the body can be pressed into the inlet connector.
  • the injection valve is therefore supplied with water exclusively via the flow channel formed in the body. This extends in the axial direction, preferably coaxially with a longitudinal axis of the injection valve.
  • the reduced free flow cross-section of the flow channel formed in the body also increases the flow rate when water is sucked back, so that the emptying of the injection valve is accelerated at the same time.
  • the reduced flow cross-section counteracts turbulence.
  • significantly more water can be sucked back out of the injection valve at the same return suction power of a delivery unit used for sucking back in the same time. This means that the risk of icing and damage to the injector due to ice pressure is significantly reduced at low outside temperatures.
  • the flow channel formed in the body preferably has a cylindrical shape.
  • the diameter of the flow channel is furthermore preferably chosen to be as small as possible in order to achieve the highest possible flow velocity when sucking back and to generate a water column that does not tear off.
  • the diameter is to be dimensioned in such a way that adequate water supply to the injection valve is ensured.
  • the diameter of the flow channel is preferably chosen to be smaller than the diameter of the distributor line.
  • the diameter of the flow channel can be, for example, 2 to 4 mm.
  • the body forming the flow channel preferably has a minimum wall thickness which corresponds to or lies above the radius of the flow channel.
  • the body inserted into the inlet connector can be made in particular of rubber or plastic.
  • the body can have a slight radial oversize compared to the axial bore, so that after the insertion, it rests under radial prestress on the inlet connector.
  • the body inserted into the inlet nozzle projects beyond the inlet nozzle in the axial direction.
  • the body can also be used to reduce a dead volume, which usually remains in a cup-shaped connecting element of the distributor line, which is used to connect the injection valve to the distributor line. The amount of water to be sucked back when the system is emptied can thus be further reduced.
  • a rail serving to supply at least one injector with water is also called a rail.
  • a rail has at least one tassenför shaped connecting element for connecting an injection valve.
  • This connection element is also called a rail cup.
  • the rail cup grips around the inlet end of the injection valve. The dead volume of the rail cup therefore depends on the specific design of the rail cup and the design of the end of the injection valve on the inlet side.
  • the trim inserted body not only protrudes in the axial direction, but also in the radial direction.
  • the body can have an annular collar that projects beyond the inlet connector in the axial and radial directions.
  • the ring collar can also be used to support the injection valve on a cup-shaped connecting element of the distributor line.
  • the injection valve can be supported axially and / or radially on the cup-shaped connecting element via the annular collar. If the support is circumferential, that is to say via an annular end face and / or an outer circumferential surface of the body, a sealing of the inlet region of the injection valve is achieved at the same time.
  • the support / seal in the axial direction preferably has the body inserted into the inlet neck on an annular end face which is supported on a shoulder or a bottom of the cup-shaped connecting element.
  • a sealing element in particular a sealing ring, can be inserted between the annular end face of the body and the cup-shaped connecting element in order to increase the sealing effect.
  • the annular end face is preferably formed by an annular collar of the body, so that the sealing surface or the bearing surface increases for the sealing ring.
  • a first part can have an outer contour, in particular an outer diameter, for insertion into the inlet socket, which is adapted to the inner contour or the inner diameter of the inlet socket.
  • Another part that serves to reduce the dead volume of the cup-shaped connecting element can have an outer contour, in particular an outer diameter, which is adapted to the inner contour or the inner diameter of the cup-shaped connecting element. If the body has an annular collar, the further part preferably forms the annular collar.
  • any injection valve for example a fuel injection valve
  • any injection valve can be upgraded to an injection valve according to the invention for water injection.
  • the water injection system for an internal combustion engine which is also proposed for solving the task mentioned at the outset, comprises a distributor line or a rail and at least one injection valve according to the invention. Due to the reduced dead volume in the injection valve and possibly in the cup-shaped connecting element, this can be emptied more easily and quickly when sucking back, so that the risk of icing and thus damage due to ice pressure decreases significantly. The robustness of the water injection system increases accordingly.
  • the diameter of the distribution line can also be reduced. The lower the dead volume, the easier and faster the area of the injection valve / distributor line can be emptied and thus protected against icing.
  • the distributor line has at least one cup-shaped connection element, via which the injection valve is connected to the distributor line.
  • the connection can be, for example, a plug, press, clamp, snap and / or screw connection. In this way, the connection of the injection valve to the distributor line can be simplified.
  • the cup-shaped connecting element preferably engages around the inlet connector of the injection valve and / or the body inserted into the inlet connector, at least in sections.
  • An axial and / or radial gap remaining between the cup-shaped connecting element and the inlet or the body remaining can be used for receiving a sealing element, in particular a sealing ring, so that the inlet area of the injection valve is sealed off from the outside.
  • a sealing ring be arranged between the cup-shaped connecting element and the body inserted into the inlet connector.
  • the sealing ring can be arranged on the outer circumference of the body or can surround the body in sections so that it seals radially.
  • the sealing ring can be axially supported on an annular end face of the body, so that it seals axially.
  • the arrangement of the sealing ring in an axial gap between the cup-shaped connection element and the body has the advantage that the dead volume in the cup-shaped connecting element is further reduced, since the sealing ring is arranged on a smaller diameter.
  • the proposed water injection system preferably further comprises a water tank for storing water and a delivery unit for delivering water.
  • the delivery unit preferably enables a reversal of the delivery direction, so that the delivery unit can also be set for sucking back water from the injection valve.
  • the pumping unit can be, for example, an electromotively driven pump, the direction of delivery of which is reversible, in order to allow water to be sucked back into the water tank.
  • FIG. 1 is a schematic longitudinal section through an injection valve according to the invention according to a first preferred embodiment
  • FIG. 2 shows a schematic longitudinal section through an injection valve according to the invention in accordance with a second preferred embodiment
  • FIG. 3 shows a schematic longitudinal section through an injection valve according to the invention in accordance with a third preferred embodiment
  • FIG. 4 shows a schematic longitudinal section through an injection valve according to the invention in accordance with a fourth preferred embodiment
  • Fig. 5 is a schematic representation of a water injection system according to the invention.
  • Fig. 6 is a schematic representation of the injection valve of the water injection system of FIG. 5 on an intake tract of an internal combustion engine. Detailed description of the drawings
  • FIG. 1 shows an injection valve 1 for a water injection system of an internal combustion engine, which comprises an annular magnetic coil 1 for acting on a lifting armature 3 which is connected to a valve member 4.
  • the Ven valve member 4 is in the present case designed as a hollow needle and is connected at its end facing away from the armature 3 with a spherical valve closing element 29 for releasing and closing at least one injection opening 30.
  • a magnetic field is formed, the magnetic force of which moves the armature 3, including the valve member 4 and the valve closing element 29, in the direction of a core 5 in order to close a working air gap 31 formed between the core 5 and the armature 3.
  • the spherical valve closing element 29 opens the injection opening 30.
  • the core 5 is hollow cylindrical and connected via a hollow cylindrical connec tion part 33 with an inlet port 6, through which the injector 1 can be supplied with water from a distributor line 7.
  • the inlet connection 6 is encompassed by a cup-shaped connection element 12 of the distributor line 7, a sealing ring 13 being arranged between the cup-shaped connection element 12 and the inlet connection 6. The inlet area is thus sealed off from the outside.
  • the cup-shaped connection element 12 has a shoulder 27, so that the cup-shaped connection element 12 merges into the distribution line 7 over a section with a reduced inside diameter. In this way, a dead volume present in the cup-shaped connecting element 12 is reduced.
  • a body 8 is inserted into the inlet nozzle 6 of the injection valve 1, through which a flow channel 9 passes, which defines an inlet opening 10.
  • the injection valve 1 is therefore supplied with water from the distributor line 7 exclusively via the flow channel 9.
  • the outer contour of the body 8 is also connected to the inner contour of the inlet nozzle 6 adapted so that the body 8 reduces the dead volume in the inlet region of the injection valve 1.
  • the measures proposed to reduce the dead volume contribute to the fact that the injection valve 1 and the cup-shaped connecting element 12 can be quickly emptied by sucking back, so that damage from freezing water when the internal combustion engine is switched off and low outside temperatures are not to be feared.
  • Further measures for reducing the dead volume can include reducing the diameter of the distributor line 7.
  • FIG. 2 shows a further injection valve 1, which differs from that of FIG. 1 only by the specific configuration of the body 8 used in the inlet connector 6.
  • the body 8 projects beyond the inlet connection 6 in the axial direction and has an annular collar 11 which is axially supported on the shoulder 27 of the cup-shaped connecting element 12. The body 8 thus simultaneously reduces the dead volume of the cup-shaped connection element 12. In addition, an additional seal is achieved by the body 8 supported on the shoulder 27.
  • a white tere hollow cylindrical portion 28 is attached in the embodiment of FIG. 2, which leads to the distributor line 7 ge.
  • the dead volume of the cup-shaped connecting element 12 is further minimized in this way.
  • FIG. 3 shows a modification of the embodiment in FIG. 2. Because here the body 8 is in several parts, namely in two parts. The several parts simplify the manufacture and assembly of the body 8.
  • the sealing ring 13 is arranged in an axial gap between the cup-shaped connecting element 12 and the annular collar 11 of the body 8 and has a smaller diameter than each of the sealing rings 13 of the previous embodiments.
  • the location and dimensions of the In the exemplary embodiment in FIG. 4, sealing rings 13 also contribute to a reduction in the dead volume in the cup-shaped connecting element 12.
  • the sealing ring 13 is supported on an end face 14 of the body 8, which is formed by the annular collar 11.
  • the body 8 thus has an enlarged support surface for the sealing ring 13.
  • FIG. 5 shows a water injection system according to the invention with at least one injection valve 1 according to the invention.
  • the system shown includes four such injection valves 1 as an example.
  • the injection valves 1 are connected to a distributor line 7 or to a rail, which is supplied with water from a water tank 15.
  • the water is supplied to the distribution line 7 with the aid of a delivery unit 16 via a water line 17.
  • the delivery unit 16 is designed as an electric motor-driven pump arranged outside the water tank 15.
  • Other versions of the conveyor unit 16 are also possible.
  • the delivery unit 16 can be arranged in the water tank 15 or integrated into the tank bottom.
  • the delivery unit 16 should be designed in such a way that the direction of delivery can be reversed in order to be able to empty the ice-pressure-sensitive lines and / or components of the system, in particular the injection valves 1, by sucking back.
  • a shut-off element 18, in particular a shut-off valve, can be arranged in the water line 17 upstream of the delivery unit 16.
  • a filter 19 is arranged upstream of the shut-off element 18, which is intended to prevent the entry of harmful particles into the delivery unit 16 and the injection valves 1.
  • a return line 22 branches off from the water line 17 downstream of the delivery unit 16 and ends in the water tank 15.
  • An excess flow rate of the delivery unit 16 can be returned to the water tank 15 via the return line 22, for example in order to regulate the pressure in the distribution line 7.
  • a pressure sensor 23 can be provided in the distributor line 7 or in the water line 17. So that no water from the water tank 15 via the return line 22 during the suction process is sucked in, a check valve 20 is provided in the return line 22.
  • the check valve 20 is also preceded by a throttle 21, with which a dynamic pressure can be built up to implement the pressure control.
  • the injection valves 1 are arranged on an intake manifold 24 via which a combustion chamber 25 of the internal combustion engine is supplied with combustion air. The water is thus injected outside the combustion chamber 25. The water is fed to the combustion chamber 25 together with the combustion air. The fuel is injected directly into the combustion chamber 25 by means of a fuel injector 26.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne une soupape d'injection (1) pour un système d'injection d'eau d'un moteur à combustion interne, comprenant une bobine magnétique (2) annulaire servant à agir sur un induit (3) pouvant effectuer un mouvement de levage, qui est relié à un organe (4) de soupape, comprenant en outre un noyau (5) en forme de cylindre creux, qui est entouré au moins par endroits par la bobine magnétique (2) et réalise une tubulure d'admission (6) ou est relié à une tubulure d'admission (6), par l'intermédiaire de laquelle la soupape d'injection (1) peut être alimentée en eau provenant d'un conduit de distribution (7). Selon l'invention, un corps (8) est inséré dans la tubulure d'admission (6), lequel est traversé dans une direction axiale par un canal d'écoulement (9), qui définit une ouverture d'admission (10) servant à alimenter la soupape d'injection (1) en eau provenant du conduit de distribution (7). L'invention concerne en outre un système d'injection d'eau pour un moteur à combustion interne comprenant une soupape d'injection (1) selon l'invention.
PCT/EP2019/081157 2018-11-28 2019-11-13 Soupape d'injection pour un système d'injection d'eau d'un moteur à combustion interne, ainsi que système d'injection d'eau comprenant une soupape d'injection de ce type WO2020108995A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201980078726.8A CN113167194A (zh) 2018-11-28 2019-11-13 用于内燃机的水喷射系统的喷射阀和具有这种喷射阀的水喷射系统

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018220385.7A DE102018220385A1 (de) 2018-11-28 2018-11-28 Einspritzventil für ein Wassereinspritzsystem eines Verbrennungsmotors sowie Wassereinspritzsystem mit einem solchen Einspritzventil
DE102018220385.7 2018-11-28

Publications (1)

Publication Number Publication Date
WO2020108995A1 true WO2020108995A1 (fr) 2020-06-04

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PCT/EP2019/081157 WO2020108995A1 (fr) 2018-11-28 2019-11-13 Soupape d'injection pour un système d'injection d'eau d'un moteur à combustion interne, ainsi que système d'injection d'eau comprenant une soupape d'injection de ce type

Country Status (3)

Country Link
CN (1) CN113167194A (fr)
DE (1) DE102018220385A1 (fr)
WO (1) WO2020108995A1 (fr)

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DE102019210142A1 (de) * 2019-07-10 2021-01-14 Robert Bosch Gmbh Einspritzventil für ein Wassereinspritzsystem eines Verbrennungsmotors sowie Wassereinspritzsystem mit einem solchen Einspritzventil
DE102020205582A1 (de) 2020-05-04 2021-11-04 Robert Bosch Gesellschaft mit beschränkter Haftung Einspritzventil für ein Wassereinspritzsystem eines Verbrennungsmotors sowie Wassereinspritzsystem mit einem solchen Einspritzventil
DE102020207594A1 (de) * 2020-06-19 2021-12-23 Robert Bosch Gesellschaft mit beschränkter Haftung Einspritzventil für ein Wassereinspritzsystem eines Verbrennungsmotors sowie Wassereinspritzsystem mit einem solchen Einspritzventil
DE102020212241A1 (de) 2020-09-29 2022-03-31 Robert Bosch Gesellschaft mit beschränkter Haftung Einspritzventil für ein Wassereinspritzsystem eines Verbrennungsmotors sowie Wassereinspritzsystem mit einem solchen Einspritzventil
DE102020213842A1 (de) 2020-11-04 2022-05-05 Robert Bosch Gesellschaft mit beschränkter Haftung Einspritzventil für ein Wassereinspritzsystem eines Verbrennungsmotors sowie Wassereinspritzsystem mit einem solchen Einspritzventil

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