EP4288653A1 - GASVENTIL MIT NACH AUßEN ÖFFNENDEM VENTILSCHLIEßELEMENT - Google Patents
GASVENTIL MIT NACH AUßEN ÖFFNENDEM VENTILSCHLIEßELEMENTInfo
- Publication number
- EP4288653A1 EP4288653A1 EP22702725.7A EP22702725A EP4288653A1 EP 4288653 A1 EP4288653 A1 EP 4288653A1 EP 22702725 A EP22702725 A EP 22702725A EP 4288653 A1 EP4288653 A1 EP 4288653A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- gas
- closing element
- sealing seat
- section
- 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- Withdrawn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
Classifications
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/12—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with streamlined valve member around which the fluid flows when the valve is opened
-
- 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
- F02M21/0206—Non-hydrocarbon fuels, e.g. hydrogen, ammonia or carbon monoxide
-
- 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
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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
- 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
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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
- 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
- F02M21/0275—Injectors for in-cylinder direct injection, e.g. injector combined with spark plug
-
- 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
- F02M2200/28—Details of throttles in fuel-injection apparatus
Definitions
- the invention relates to a gas valve with an outwardly opening valve closing element.
- natural gas can be blown into a combustion chamber of an internal combustion engine or into an intake tract upstream of the combustion chamber.
- hydrogen can be metered into an anode circuit of a fuel cell system with the aid of the gas valve.
- the gas to be blown in or metered in can accordingly in particular be a fuel.
- injection valves for liquid and/or gaseous fuels are described in a wide variety of embodiments, including those that have a valve closing element that opens to the outside.
- an electrically controllable actuator for example a piezoelectric or magnetic actuator, presses the valve closing element out of its sealing seat.
- the actuator force can act directly or indirectly, in particular hydraulically translated, on the valve closing element.
- a servo principle can also be used for indirect control. Designs are also known in which the valve closing element is opened purely hydraulically via an increase in pressure of the medium to be introduced, so-called pressure-controlled systems.
- the challenge is, on the one hand, to adjust the mass flow precisely and, on the other hand, to control the injection direction of the gas jet or gas jets in a targeted manner.
- the gas flow reacts particularly sensitively to the back pressure present at the valve outlet. This is This is particularly the case when the pressure ratio at the valve outlet is subcritical.
- the cross section of the outlet opening can therefore be chosen so small that, due to the limited mass flow, a supercritical pressure ratio is set at the valve outlet. The consequence of this, however, is that the possibilities for beam shaping or beam guidance are limited. This conflict of objectives needs to be resolved.
- the published application DE 10 2014 224 344 A1 describes, for example, a gas injector for blowing a gaseous fuel directly into a combustion chamber of an internal combustion engine with a valve closing element that opens outwards and a jet guiding element that is set up to form a gas jet to be blown into the combustion chamber.
- the beam guiding element is located downstream of a sealing seat for the valve closing element.
- the mass flow is set via the opening cross section between the sealing seat and the valve closing element. Since this can vary over time due to wear, precise adjustment of the mass flow over time is difficult.
- the mass flow which is discharged via the gas valve, can be adjusted via the throttle point downstream of the sealing seat. Since this point, unlike the sealing seat, is subject to little or no wear, precise adjustment of the mass flow can also be guaranteed over time.
- the mass flow can be adjusted very precisely via the surfaces delimiting the annular gap.
- the prerequisite for setting the mass flow via the throttling point is that the gas valve is open so far that the sealing seat is unthrottled. Otherwise, the gas valve forms another throttle point that limits the mass flow.
- the gas valve is preferably designed such that at maximum stroke of the valve closing element the flow cross section of the annular gap forming the throttle point is smaller than the flow cross section between the valve body and the valve closing element in the region of the sealing seat. This ensures that the mass flow is defined solely via the annular gap.
- the sealing seat is therefore relieved of this function, or the function normally assigned to the sealing seat is shifted to the area of the throttle point in the proposed gas valve.
- the flow cross section of the annular gap be the same over the entire stroke of the valve closing element. That means that the Flow cross section and thus the mass flow does not change through the throttle point over the entire stroke of the valve closing element.
- the sleeve has a constant inside diameter in the area of the valve closing element.
- the sleeve form at least one injection opening at the end for forming a gas jet, the flow cross section of which is larger than that of the annular gap.
- the at least one blow-in opening therefore has no dosing function, but is used exclusively for beam formation and beam guidance. Due to the decoupling of the functions, the at least one injection opening can be designed freely. For example, several injection openings can be provided. Furthermore, the size and/or the shape can be varied. The opening can be conical in shape, for example.
- the injection opening is delimited by at least one flow guide surface, which is oriented at an angle to a longitudinal axis A of the gas valve.
- the angularly arranged flow guide surface not only allows the gas jet to be shaped, but also guided.
- the injection opening can also be designed in such a way that the opening cross section releases a very large angular range, for example an angular range of >90° for the gas jet.
- the sealing seat is conical and opens towards the plate-shaped end section of the valve closing element.
- the poet seat enables self-centering of the valve closing element when closing.
- the plate-shaped end section of the valve closing element preferably forms a sealing surface which interacts with the sealing seat and is preferably rounded.
- the sealing surface only comes into contact with the sealing seat via a circumferential contact line, which promotes self-centering of the valve closing element in relation to the sealing seat.
- a bolt-shaped or needle-shaped section, over which the valve-closing element is guided preferably adjoins the plate-shaped end section of the valve-closing element.
- the guide ensures that the annular gap between the sleeve and the valve closing element is the same all the way around and also remains the same when the valve closing element is lifted. Because in the present case the mass flow is set via the annular gap.
- FIG. 1 shows a schematic longitudinal section through a gas valve according to the invention in the area of a sealing seat for an outwardly opening valve closing element.
- the flow cross section of the annular gap 8 is smaller than the flow cross section between the valve body 2 and the valve closing element 5 in the area of the sealing seat 3 when the gas valve 1 is fully open is, so that the annular gap 8 forms a throttle point in the gas flow path 4 . This limits the Mass flow through the gas valve 1, so that the mass flow can be precisely adjusted via the annular gap 8 or the surfaces delimiting the annular gap 8.
- valve closing element 5 is also “guided” in that the sealing seat 3 is conical and a sealing surface 12 of the valve closing element 5 formed on the plate-shaped end section 6 is rounded. Because in this way a self-centering of the valve closing element 5 in relation to the sealing seat 3 is achieved.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Lift Valve (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021201085.7A DE102021201085A1 (de) | 2021-02-05 | 2021-02-05 | Gasventil mit nach außen öffnendem Ventilschließelement |
| PCT/EP2022/052172 WO2022167355A1 (de) | 2021-02-05 | 2022-01-31 | GASVENTIL MIT NACH AUßEN ÖFFNENDEM VENTILSCHLIEßELEMENT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4288653A1 true EP4288653A1 (de) | 2023-12-13 |
Family
ID=80218558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22702725.7A Withdrawn EP4288653A1 (de) | 2021-02-05 | 2022-01-31 | GASVENTIL MIT NACH AUßEN ÖFFNENDEM VENTILSCHLIEßELEMENT |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240044410A1 (de) |
| EP (1) | EP4288653A1 (de) |
| CN (1) | CN117136276A (de) |
| DE (1) | DE102021201085A1 (de) |
| WO (1) | WO2022167355A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022213080A1 (de) | 2022-12-05 | 2024-06-06 | Robert Bosch Gesellschaft mit beschränkter Haftung | Gasventil |
| DE102023000663B3 (de) | 2023-02-24 | 2024-06-20 | Joachim Böhme | Kraftstoffzuführungssystem für eine fremdgezündete gasbetriebene Brennkraftmaschine und eine damit ausgerüstete Brennkraftmaschine |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT255212B (de) | 1963-05-17 | 1967-06-26 | Hans Dipl Ing Dr Techn List | Gas-Ottomotor |
| US4574754A (en) * | 1982-08-16 | 1986-03-11 | Rhoades Jr Warren A | Stratified charge combustion system and method for gaseous fuel internal combustion engines |
| DE3734737A1 (de) * | 1986-10-14 | 1988-04-21 | Orbital Eng Pty | Brennstoffeinspritzsystem und mit diesem ausgeruestete verbrennungsmaschine |
| US5752481A (en) * | 1993-10-18 | 1998-05-19 | Valve Maintenance Corporation | Injection valve assembly for an internal combustion engine |
| US6708905B2 (en) * | 1999-12-03 | 2004-03-23 | Emissions Control Technology, Llc | Supersonic injector for gaseous fuel engine |
| US7451942B2 (en) * | 2003-10-20 | 2008-11-18 | Digicon, Inc. | Direct fuel injector assembly for a compressible natural gas engine |
| DE102014212339A1 (de) * | 2014-06-26 | 2015-12-31 | Robert Bosch Gmbh | Injektor, insbesondere Einblasinjektor für gasförmige Kraftstoffe |
| DE102014224341A1 (de) * | 2014-11-28 | 2016-06-02 | Robert Bosch Gmbh | Gasinjektor mit Elastomerdichtung |
| DE102014224344A1 (de) | 2014-11-28 | 2016-06-02 | Robert Bosch Gmbh | Gasinjektor mit nach außen öffnendem Ventilschließelement |
| DE102014224339A1 (de) * | 2014-11-28 | 2016-06-02 | Robert Bosch Gmbh | Direkteinblasender Gasinjektor mit verbesserter Kühlung |
| DE102015225216A1 (de) | 2015-12-15 | 2017-06-22 | Robert Bosch Gmbh | Injektoranordnung mit Gasinjektor |
-
2021
- 2021-02-05 DE DE102021201085.7A patent/DE102021201085A1/de active Pending
-
2022
- 2022-01-31 CN CN202280026540.XA patent/CN117136276A/zh active Pending
- 2022-01-31 EP EP22702725.7A patent/EP4288653A1/de not_active Withdrawn
- 2022-01-31 WO PCT/EP2022/052172 patent/WO2022167355A1/de not_active Ceased
- 2022-01-31 US US18/264,479 patent/US20240044410A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102021201085A1 (de) | 2022-08-11 |
| US20240044410A1 (en) | 2024-02-08 |
| CN117136276A (zh) | 2023-11-28 |
| WO2022167355A1 (de) | 2022-08-11 |
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Legal Events
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| 17P | Request for examination filed |
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| AK | Designated contracting states |
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| DAX | Request for extension of the european patent (deleted) | ||
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| 18D | Application deemed to be withdrawn |
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