WO2022258246A1 - Gasinjektor mit dämpfungseinrichtung, insbesondere für kurze hübe - Google Patents
Gasinjektor mit dämpfungseinrichtung, insbesondere für kurze hübe Download PDFInfo
- Publication number
- WO2022258246A1 WO2022258246A1 PCT/EP2022/059901 EP2022059901W WO2022258246A1 WO 2022258246 A1 WO2022258246 A1 WO 2022258246A1 EP 2022059901 W EP2022059901 W EP 2022059901W WO 2022258246 A1 WO2022258246 A1 WO 2022258246A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lubricant
- gas injector
- brake
- bolt
- chamber
- Prior art date
Links
- 238000013016 damping Methods 0.000 title claims abstract description 53
- 239000000314 lubricant Substances 0.000 claims abstract description 91
- 239000012530 fluid Substances 0.000 claims abstract description 34
- 239000000446 fuel Substances 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000005461 lubrication Methods 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 44
- 238000004891 communication Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 77
- 238000002485 combustion reaction Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000007788 liquid Substances 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229920013639 polyalphaolefin Polymers 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000010696 ester oil Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- -1 petrol or diesel Substances 0.000 description 1
- 239000010695 polyglycol Substances 0.000 description 1
- 229920000151 polyglycol Polymers 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
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
- 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
- F02M21/0248—Injectors
- F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
- F02M21/026—Lift valves, i.e. stem operated valves
- F02M21/0269—Outwardly opening valves, e.g. poppet 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
- 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
- F02M21/0248—Injectors
- F02M21/0251—Details of actuators therefor
- F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
-
- 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
Definitions
- the present invention relates to a gas injector for blowing in a gaseous fuel, in particular hydrogen or natural gas or the like, with reduced wear and improved damping behavior, in particular for internal combustion engines.
- the gas injector is designed in particular for direct injection into a combustion chamber of an internal combustion engine and can dampen short opening strokes in particular very well.
- Gas injectors are known from the prior art in different configurations.
- a problem with gas injectors is inherent in the fact that due to the gaseous medium to be blown in, no lubrication by the medium is possible, as is possible, for example, with fuel injectors that inject gasoline or diesel. This results in excessive wear during operation compared to fuel injectors for liquid fuels. In this context, it would be desirable to have a gas injector with improved wear behavior.
- the gas injector according to the invention for blowing in a gaseous fuel with the features of claim 1 has the advantage that wear on the gas injector can be significantly reduced. This can be ensured with both long and short opening strokes of the gas injector. As a result, the service life of the gas injector is lengthened and essentially corresponds to the service life of a fuel injector for liquid fuels. In particular, when closing the Gas injector perform a closing element a much better cushioned closing process, so that wear on the sealing seat and on other components of the closing element is reduced or prevented.
- the gas injector has a lubricant which is located in a closed lubricant space and in which movable parts of the gas injector are arranged.
- the gas injector includes a magnetic actuator with an armature, an inner pole and a coil.
- the armature which is in operative connection with a closing element which opens and closes a gas path at a sealing seat, is provided in order to enable a movement for opening and/or closing the gas injector.
- the armature located in the lubricant space which is pulled against the inner pole of the magnetic actuator due to electromagnetic forces when the coil is energized, is therefore located inside the lubricant space and is constantly supplied and lubricated with lubricant.
- wear on the armature is significantly reduced in comparison with the gas injectors previously known from the prior art.
- the lubricant space is preferably completely filled with lubricant.
- the gas injector comprises a braking device which is arranged in the lubricant chamber and is set up to brake and dampen the closing element during a resetting process of the gas injector from the open to the closed state.
- the braking device comprises a braking bolt, a damping chamber which is in fluid communication with the lubricant chamber via a first fluid path, and an elastic braking element, in particular a spring.
- the braking device comprises an anchor bolt, on which the anchor is arranged and which is in operative connection with the closing element, and a guide disk, in which the anchor bolt is guided.
- a brake bolt valve of the braking device is included for releasing and/or closing a second fluid path for additional filling of the damping chamber of the braking device Lubricant provided. The filling of the damping chamber via the second fluid path takes place in the open state of the gas injector.
- the brake pin valve is arranged on a brake valve seat between the armature pin and the brake pin for releasing and/or closing the second fluid path.
- the braking bolt and the elastic braking element are in operative connection with the closing element and/or the armature, with the braking bolt also being set up during the reset process to displace lubricant from the damping chamber in order to dampen a return of the brake bolt and thus a return of the closing element. Since part of the braking process is also provided by hydraulic sticking between the brake bolt and a stop component on which the brake bolt rests when the gas injector is open, the provision of the damping chamber can prevent the formation of vapor bubbles in the liquid lubricant when the hydraulic sticking is overcome. so that in particular wear due to cavitation can be prevented.
- the brake bolt valve includes a through hole in the brake bolt, which a first end face of the brake bolt with the Damping chamber connects and is part of the second fluid path.
- the anchor bolt has a second end face facing the damping bolt, with the first end face of the braking bolt bearing against the second end face of the anchor bolt in the closed state of the gas injector in such a way that the second fluid path is closed. This means that no lubricant can flow into the damping chamber via the through-hole in the brake bolt when it is closed.
- the second fluid path is only open when the gas injector is open, so that sufficient lubricant can get into the damping chamber via the open brake pin valve and the through hole in the brake pin.
- the braking device includes a throttle, which is arranged in the first fluid path between the damping chamber and the lubricant chamber.
- the restrictor is preferably a stepped bore and ensures that there is fluid communication between the damping chamber and the lubricant chamber in any operating condition of the gas injector, i.e. whether open or closed.
- the damping behavior of the braking device can be adjusted by selecting geometric dimensions of the bore, for example diameter and/or length of the bore.
- the throttle is preferably arranged in a guide body and designed as a through hole in the guide body, the guide body being set up to guide the brake bolt.
- the first fluid path is formed between the brake bolt and the guide body and is preferably formed as a groove in the casing of the brake bolt and/or as a groove in the guide cylinder in the guide body for the brake bolt.
- one or more channels are preferably formed in a side of the guide disk which is directed towards the brake bolt.
- one or more channels are formed in the first end face of the brake bolt.
- the additional channels ensure that sufficient lubricant can flow from the lubricant space into the damping space via the second fluid path in the open state.
- a further flow improvement is achieved if preferably the channels through a circumferential recess are fluidly connected to each other.
- the recess for connecting the channels is preferably formed in the guide disk.
- the brake valve seat between the brake bolt and the anchor bolt is preferably designed as a flat sealing seat.
- the brake valve seat is a cone-ball seat or a cone-cone seat.
- the elastic braking element of the braking device is arranged in the damping space.
- the elastic braking element is preferably a compression spring, in particular a cylinder spring.
- the gas injector comprises a guide body which is arranged in the lubricant chamber and has a guide area for guiding the brake bolt.
- the guide body preferably has a recess, in particular at an end of the guide body directed toward the sealing seat, in which the brake bolt is guided.
- a flexible sealing element e.g. a bellows, is preferably provided, which seals the lubricant space in a partial area.
- the flexible sealing element of the lubricant space preferably comprises a first and a second flexible sealing element.
- the two sealing elements are particularly preferably bellows.
- the lubricant chamber is thus sealed by two flexible sealing elements, which means that if the lubricant is displaced in the lubricant chamber, it can be prevented that an unfavorable overpressure or negative pressure develops, which can exert an unwanted force on the closing element of the gas injector, for example via components of the lubricant reservoir.
- An accumulator spring exerts a predetermined force on the lubricant in the closed lubricant space, preferably from the outside.
- An overpressure of between 0.5 and 10.times.10.sup.5 Pa is preferably exerted here, particularly preferably 1 to 5.times.10.sup.5 Pa.
- the lubricant in the lubricant chamber can thus be brought under a predetermined pretension, as a result of which undesired deformations which could have an impact on a stroke of the closing element can be reliably prevented.
- the second bellows is more preferably connected to the accumulator spring via a spring plate.
- a simple and cost-effective structure can be implemented.
- a certain pretension can be exerted directly on the second bellows by means of the accumulator spring, as a result of which the rigidity of the second bellows is slightly increased compared to the first bellows.
- An oil in particular mineral oil, is preferably used as the lubricant.
- a liquid fuel in particular diesel or petrol, is used.
- a grease or a PAO oil (poly alpha olefins) or an ester oil or a polyglycol oil is used as the lubricant.
- the gas injector is preferably an outwardly opening injector. More preferably, the gas injector is pressure force balanced. As a result, the force required to open the gas injector by the magnetic actuator is independent of the gas pressure. The time it takes to open and close the injector after the start and end of current application is therefore also independent of the gas pressure. This in turn allows operation at different gas pressures. The gas pressure can be reduced if a small injection quantity is desired, and the gas pressure can be increased if a large injection quantity is desired.
- the injector is pressure-force-balanced when the mean diameter of the bellows is equal to the diameter of the seat contact line between the closing element and the valve body. However, the mean bellows diameter can also be smaller or larger than the seat diameter.
- the total closing force on the valve needle is reduced with a higher gas pressure and the injector opens faster when energized and closes more slowly after energizing. This results in an increased gas injection volume.
- the second case increases at a higher Gas pressure the closing force on the valve needle. This in turn can compensate for an increase in the amount of seat leakage due to the higher gas pressure.
- a return preferably takes place by means of a return spring.
- a return spring In the case of a pressure-balanced injector, there is in particular no pressure force on the valve needle from the gaseous fuel when the gas injector is in the closed state, so that a load on the closing element can be significantly reduced.
- Figure 1 shows a schematic sectional view of a gas injector according to a first preferred embodiment of the invention
- Figure 2 is a schematic enlarged partial sectional view of
- Figure 3 is a schematic, enlarged partial sectional view of
- FIG. 4 shows a schematic, enlarged partial sectional view of a
- a gas injector 1 according to a first preferred exemplary embodiment of the invention is described in detail below with reference to FIGS.
- the gas injector 1 for introducing a gaseous fuel comprises a magnet actuator 2, softer a closing element 3, in this exemplary embodiment an outwardly opening valve needle closed state moves to an open state.
- FIG. 1 shows the closed state of the gas injector.
- the magnetic actuator 2 includes an armature 20 which rests against the closing element 3 by means of an armature bolt 24 . Furthermore, the magnetic actuator 2 includes an inner pole 21, a coil 22 and a magnet housing 23, which ensures a magnetic yoke of the magnetic actuator.
- the gas injector 1 comprises a main body 7 with a connection pipe 70 through which the gaseous fuel is supplied.
- a valve housing 8 in which the magnetic actuator 2 is arranged is fixed to the main body 7 .
- the valve housing 8 is followed by a housing sleeve 19 and a valve tube 90, at the free end of which a sealing seat 11 is provided, on which the closing element 3 releases and closes a passage for the gaseous fuel.
- FIG. 1 shows an electrical connection 13, which is routed through the main body 7 to the magnetic actuator 2.
- the reference numeral 10 designates a resetting element for the closing element 3 in order to reset it back into the closed state shown in FIG. 1 after an opening process.
- FIG. 1 also shows a gas flow as a gas path 14 through the gas injector 1 .
- the gas flow begins at the connection pipe 70 and is then diverted into an annular space 80 between the valve housing 8 and the main body 7.
- the gas flow 14 continues past an outer area of the magnetic actuator 2 through a filter 15 to in front of the sealing seat 11 Breakthroughs are provided in the respective components, which are not all shown in FIG.
- a first guide area 31 and a second guide area 32 are provided for guidance between the closing element 3 and a valve body 9, as can be seen in detail from FIG.
- the first guide area 31 is formed close to the sealing seat 11 directly between the closing element 3 and the valve body 9 .
- the second guide area 32 is formed between a spring plate 16 and the valve body 9 .
- the spring plate 16 is firmly connected to the closing element 3 , with the restoring element 10 being supported between the valve body 9 and the spring plate 16 .
- the gas injector 1 comprises a closed lubricant space 4.
- the closed lubricant space 4 is completely or partially filled with a liquid lubricant, e.g. oil.
- the lubricant chamber 4 is defined by a first flexible sealing element 51, the inner pole 21, the magnet housing 23, a guide body 18 and a second flexible sealing element 52.
- the first and second flexible sealing element 51, 52 is each designed as a bellows.
- the first and second flexible sealing element 51, 52 is of the same design.
- the flexible sealing elements 51, 52 can also be, for example, a membrane or a hose or the like instead of a bellows.
- the second flexible sealing element 52 is fixed to an accumulator spring plate 41, for example by means of a welded connection.
- the gas injector 1 includes an accumulator compression spring 40 which is supported on the main body 7 and pretensions the second flexible sealing element 52 via the accumulator spring plate 41 .
- Connecting bores 18a are provided in the guide body 18 so that the lubricant located in the lubricant space 4 is also located in the area within the second flexible sealing element 52 .
- the first flexible sealing element 51 is fixed directly to the closing element 3 and connected to the valve body 9 at the other end.
- transverse bores 91 are provided in the valve body 9, so that a fluid connection between the Interior of the first flexible sealing element 51 and the interior of the valve body 9 is present.
- the lubricant chamber 4 has two flexible sealing elements 51, 52 and the accumulator pressure spring 40.
- the accumulator pressure spring 40 exerts a certain preload, for example 1 ⁇ 10 5 Pa, on the lubricant located in the lubricant space 4 . If, during an opening process, the lubricant is displaced by the stroke of the closing element 3 or by thermal expansion or cooling of the lubricant, any overpressure/negative pressure that may arise inside the lubricant chamber 4 can be caused by deflection at the second flexible sealing element 52 in conjunction with a contraction of the Storage pressure spring 40 are compensated.
- the flexible sealing element 51 can thus be avoided by an unwanted force acting on the closing element 3 via the active surface of the bellows.
- the anchor bolt 24 with the anchor 20 fixed thereto is arranged in the closed lubricant space 4 . Since the lubricant chamber 4 is filled with a lubricant, for example a liquid fuel such as petrol or diesel, or a grease or the like, the armature 20 is continuously lubricated. In this way, the problem that occurs in the prior art with gaseous fuels, namely that the moving parts are not lubricated, can be compensated for.
- a lubricant for example a liquid fuel such as petrol or diesel, or a grease or the like
- a filling channel 17a is provided for filling the closed lubricant space 4 .
- the filling channel 17a is sealed in a fluid-tight manner by means of a sealing ball 17 .
- a braking device 6 is also arranged in the closed lubricant space 4 .
- the braking device 6 comprises a braking bolt 60, a damping chamber 62 filled with lubricant and an elastic braking element 61 designed as a braking spring.
- the damping chamber 62 is in fluid communication with the lubricant chamber 4.
- the braking device 6 includes a guide disk 25, in which the anchor bolt 24 is guided.
- the guide disk 25 has a plurality of openings 25a running in the axial direction.
- the braking device also includes a brake pin valve 66. When the brake bolt valve 66 is in the open state, the armature bolt 24 is moved in the direction of the arrow B together with the closing element 3 , so that the armature bolt is no longer in contact with the brake bolt 60 .
- a first end face 60a of the brake bolt 60 which is directed in the direction of the armature bolt 24, is in contact with a second end face 24a of the armature bolt 24.
- a through hole 67 which is the first Face 60a connects to the damping space 62.
- FIG. 2 shows the closed state of the gas injector.
- the damping chamber 62 there is a constant connection between the damping chamber 62 and the lubricant chamber 4 via a throttle 63 .
- This permanent connection between the damping chamber 62 and the lubricant chamber 4 forms a first fluid path 101, via which lubricant can flow from the lubricant chamber 4 into the damping chamber 62 and vice versa.
- the first fluid path 101 runs through the guide body 18 in which the throttle 63 is formed.
- the throttle 63 opens into the connecting bores 18a in the guide body 18.
- the throttle 63 can be designed as a stepped straight bore and is located in the central axis of the gas injector.
- the second end face 24a at the end of the anchor bolt 24 is lifted off the first end face 60a by the anchor travel C. Since a plurality of radially running channels 26 are provided in the guide disk 25, which are formed from the openings in the guide disk 25 to an annular recess 27 on a radial inner side of the guide surface for the anchor bolt 24, the result when the gas injector is open is the second fluid path 102, which is indicated by dashed lines in FIG. As a result, lubricant can flow via the channels 26 and the recess 27 into the through hole 67 and from there into the damping space 62 .
- the damping bolt 60 is pressed against the guide disk 25 in the axial direction XX by the elastic braking element 61 .
- two fluid paths 101, 102 are provided in order to supply the damping chamber 62 with sufficient lubricant. This is particularly important because when the gas injector opens for only a very short time, the closing element and thus also the armature 20 and the armature bolt 24 are reset quickly, which must be adequately dampened. Such short injection times are given, for example, when the internal combustion engine is idling or when there are multiple injections.
- the flow then also occurs via the first fluid path 101 through the throttle 63, which is always open.
- a flat sealing seat is formed between the first end face 60a of the brake bolt 60 and the second end face 24a of the anchor bolt 24 .
- a cone-ball seal seat or a cone-cone seal seat it is also possible here for a cone-ball seal seat or a cone-cone seal seat to be provided.
- the damping process when the gas injector is closed is further supported by the brake spring 61 and hydraulic adhesion of the brake bolt 60 to the guide disk 25 .
- the damping chamber 62 can prevent cavitation during the closing process of the gas injector in this area between the guide disk 25 and the first end face 60a of the brake bolt 60 .
- the gas injector 1 shown in FIG. 1 is pressure force balanced.
- This means that the closing element 3 is connected to the valve body 9 via the first flexible sealing element 51, with the first flexible sealing element 51 designed as a metal bellows having an average diameter which is equal to a diameter on the sealing seat 11, on which the closing element 3 on the sealing seat 11 seals.
- the first flexible sealing element 51 designed as a metal bellows having an average diameter which is equal to a diameter on the sealing seat 11, on which the closing element 3 on the sealing seat 11 seals.
- the gas injector 1 can thus provide reduced wear on the moving parts, in particular on the sealing seat 11, armature 20 and in the armature bolt 24, and can ensure adequate damping even with smaller strokes thanks to the damping chamber 62 that is always sufficiently filled via the two fluid paths 101, 102. Furthermore, heat dissipation from the magnetic actuator 2 can be significantly improved by the sealed lubricant chamber 4 with a liquid lubricant. Furthermore, the two flexible sealing elements 51 , 52 can prevent unwanted forces from acting on the closing element 3 .
- FIG. 4 shows an enlarged partial sectional view of a braking device of a gas injector according to a second preferred exemplary embodiment of the invention. Identical or functionally identical parts are denoted by the same reference symbols as in the first exemplary embodiment.
- FIG. 4 shows the closed state of the gas injector.
- a first fluid path 101 is not designed as a throttle in the guide body 18, rather the fluid connection between the damping chamber 62 and the lubricant chamber 4 is designed between the brake bolt 62 and the cylindrical receiving space in the guide body 18 for the brake bolt 62.
- one or more grooves 60a are formed in the brake bolt 60 on the casing area of the brake bolt 60.
- the first fluid path 101 through the play between the brake bolt 60 and the cylindrical portion of the guide body 18 in which the
- Brake bolt 60 is added to be adjusted.
- one or more grooves can also be provided in the cylindrical area of the guide body 18 . There is thus a throttling in the first fluid path in the area between the brake bolt 60 and the cylindrical partial area of the guide body 18. Otherwise this corresponds
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020247000135A KR20240017900A (ko) | 2021-06-07 | 2022-04-13 | 특히 짧은 스트로크용 댐핑 장치를 구비한 가스 인젝터 |
JP2023574795A JP2024520729A (ja) | 2021-06-07 | 2022-04-13 | 特に短いストローク用の減衰デバイスを備えるガスインジェクタ |
CN202280055347.9A CN117795186A (zh) | 2021-06-07 | 2022-04-13 | 具有阻尼装置的、尤其用于短行程的气体喷射器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021205694.6A DE102021205694A1 (de) | 2021-06-07 | 2021-06-07 | Gasinjektor mit Dämpfungseinrichtung, insbesondere für kurze Hübe |
DE102021205694.6 | 2021-06-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022258246A1 true WO2022258246A1 (de) | 2022-12-15 |
Family
ID=81603487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/059901 WO2022258246A1 (de) | 2021-06-07 | 2022-04-13 | Gasinjektor mit dämpfungseinrichtung, insbesondere für kurze hübe |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP2024520729A (de) |
KR (1) | KR20240017900A (de) |
CN (1) | CN117795186A (de) |
DE (1) | DE102021205694A1 (de) |
WO (1) | WO2022258246A1 (de) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008041544A1 (de) * | 2008-08-26 | 2010-03-04 | Robert Bosch Gmbh | Ventil zur Zumessung eines flüssigen oder gasförmigen Mediums |
WO2017167558A1 (de) * | 2016-03-31 | 2017-10-05 | Robert Bosch Gmbh | Injektor zum einblasen eines gasförmigen brennstoffs in einen brennraum |
-
2021
- 2021-06-07 DE DE102021205694.6A patent/DE102021205694A1/de active Pending
-
2022
- 2022-04-13 JP JP2023574795A patent/JP2024520729A/ja active Pending
- 2022-04-13 CN CN202280055347.9A patent/CN117795186A/zh active Pending
- 2022-04-13 KR KR1020247000135A patent/KR20240017900A/ko unknown
- 2022-04-13 WO PCT/EP2022/059901 patent/WO2022258246A1/de active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008041544A1 (de) * | 2008-08-26 | 2010-03-04 | Robert Bosch Gmbh | Ventil zur Zumessung eines flüssigen oder gasförmigen Mediums |
WO2017167558A1 (de) * | 2016-03-31 | 2017-10-05 | Robert Bosch Gmbh | Injektor zum einblasen eines gasförmigen brennstoffs in einen brennraum |
Also Published As
Publication number | Publication date |
---|---|
DE102021205694A1 (de) | 2022-12-08 |
CN117795186A (zh) | 2024-03-29 |
JP2024520729A (ja) | 2024-05-24 |
KR20240017900A (ko) | 2024-02-08 |
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