EP0247447B1 - Vorrichtung zum dosierten Zuführen eines Brennstoffen, insbesondere in den Brennraum einer Brennkraftmaschine - Google Patents

Vorrichtung zum dosierten Zuführen eines Brennstoffen, insbesondere in den Brennraum einer Brennkraftmaschine Download PDF

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Publication number
EP0247447B1
EP0247447B1 EP87106999A EP87106999A EP0247447B1 EP 0247447 B1 EP0247447 B1 EP 0247447B1 EP 87106999 A EP87106999 A EP 87106999A EP 87106999 A EP87106999 A EP 87106999A EP 0247447 B1 EP0247447 B1 EP 0247447B1
Authority
EP
European Patent Office
Prior art keywords
fuel
shank
valve
valve body
connection
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.)
Expired - Lifetime
Application number
EP87106999A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0247447A1 (de
Inventor
Wolfgang Strobl
Walter Peschka
Gottfried Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Deutsches Zentrum fuer Luft und Raumfahrt eV
Original Assignee
Bayerische Motoren Werke AG
Deutsches Zentrum fuer Luft und Raumfahrt eV
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 Bayerische Motoren Werke AG, Deutsches Zentrum fuer Luft und Raumfahrt eV filed Critical Bayerische Motoren Werke AG
Publication of EP0247447A1 publication Critical patent/EP0247447A1/de
Application granted granted Critical
Publication of EP0247447B1 publication Critical patent/EP0247447B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/042—The valves being provided with fuel 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S239/00—Fluid sprinkling, spraying, and diffusing
    • Y10S239/19—Nozzle materials

Definitions

  • the invention is based on the preamble of the independent claim from DE-C 733 319.
  • This known device is an inlet valve for internal combustion engines provided with a fuel injection nozzle.
  • This known device is intended for dispensing liquid or powdered fuel, compressed air being additionally added to the respective fuel.
  • the fuel injector has a separate connection for each medium. Furthermore, since the fuel injection nozzle is arranged in an inlet valve which is relatively well cooled by the inflowing intake air, a fuel upstream of the outlet opening in the hollow shaft as a storage chamber remains relatively cool.
  • DE-A 3 432 663 discloses a fuel injector which can be arranged separately in the combustion chamber of a diesel engine and in which the injection jet has an intrinsic rotation about the jet axis for better mixture formation.
  • This intrinsic rotation or the swirl of the injection jet is brought about by channels arranged at an angle to the valve axis, via which the fuel is supplied to the outlet opening from a chamber formed in the valve body when the valve is open.
  • the channel is arranged helically on the outer circumference of a cylindrical collar adjacent to the valve cone, the channel being connected to an annular chamber which stores the fuel.
  • the annular chamber is delimited on the one hand by the stem of the valve and on the other hand by the bore in the valve body receiving the valve collar.
  • the chamber storing the fuel is designed as an annular chamber radially spaced from the valve in the valve body, from which the fuel is supplied to the outlet opening via the tangentially arranged channels when the valve is open.
  • a relatively unimpeded flow of heat to the fuel in the respective storage chamber of the device applies to both examples.
  • the invention is based on the object of designing the generic device as a fuel injection nozzle arranged separately in the combustion chamber in such a way that the essential part of the fuel stored in the device during operation, in particular cryogenic fuel, can absorb little heat.
  • the fuel is supplied via a single connection both to the storage chamber arranged in the hollow shaft and to the gap formed between the valve shaft and the valve body.
  • the fuel in this gap With the fuel in this gap, the flow of heat from the valve body to the fuel in the hollow stem of the valve is interrupted.
  • the fuel in this gap is in a fuel-carrying connection at the latest when the shaft is moved to control the outlet opening with the adjacent overflow chamber, there is a fuel flow in the bypass, especially when the valve is open.
  • This has the advantage that the fuel has only a short dwell time in the gap or in the bypass and thus on the one hand absorbs little heat and on the other hand additionally cools the hollow shaft of the valve from the outside.
  • the device according to the invention is preferably used when using a cryogenic, gaseous fuel, in particular hydrogen.
  • Claim 3 describes a further embodiment of the device, in which the valve is intermittently controlled via the stem by a separate stroke actuating device.
  • the shaft is made hollow up to the coupling with the lifting actuating device according to a partial feature of claim 6.
  • a cold cushion is thus implemented between the supply and the actuating device in the hollow shaft of the valve at approximately half the length of the shaft to the storage chamber.
  • a device 1 for the dosed supply of cryogenic, gaseous hydrogen into the combustion chamber of an internal combustion engine comprises, in a valve body 2, a valve 4 guided over a shaft 3 and which intermittently controls an outlet opening 5 arranged in the valve body 2.
  • the intermittent control of the valve 4 is effected by a separate stroke actuating device 6, which acts on the stem 3 of the valve 4.
  • the stem 3 is guided through a bushing 7 in an end region facing away from the valve 4.
  • this can be formed from teflon graphite or teflon bronze.
  • the shaft 3 between the valve 4 and the coupling point with the stroke actuating device 6 is hollow.
  • the hollow shaft 3 serves in the device 1 as a storage chamber 8 for the cryogenic hydrogen which is to be introduced into the combustion chamber of the internal combustion engine via the outlet opening 5.
  • the socket 7 is arranged adjacent to the valve side in the valve body 2, an inlet chamber 10 connected to a fuel connection 9.
  • the inlet chamber 10 is provided with openings 11 in the shaft 3 the storage chamber 8 in a fuel-carrying connection.
  • channels 12 are arranged close to the valve 4 in the shaft 3.
  • the channels 12 connect the storage chamber 8 with an overflow chamber 13 which is concentric in the valve body 2 with the stem 3.
  • the overflow chamber 13 connects directly to the outlet opening 5 or the valve seat 14.
  • the channels 12 are arranged obliquely and / or approximately tangentially in the circumferential direction of the shaft 3 in order to achieve an injection jet with swirl.
  • the inlet chamber 10 is connected to the overflow chamber 13 in a fuel-carrying connection via a gap 16 formed between the stem 3 and the valve body 2.
  • the stem 3 On the side facing away from the socket 7 from the valve 4, the stem 3 is extended beyond the valve body 2 for connection to the separate stroke actuating device 6. As can also be seen from the drawing, the stem 3 is approximately up to the coupling point with the stroke Actuator 6 designed hollow. Furthermore, a connecting flange 17 which is axially spaced apart from the valve body 2 is arranged fuel-tight on the shaft 3 in its end region facing the stroke actuating device 6. In order to achieve a fuel-tight arrangement, an axially flexible bellows 18 is arranged between the connecting flange 17 and the free end of the valve body 2 and is in a fuel-tight connection at both ends with the respective component.
  • the stroke actuating device 6 comprises a stroke drive 10 which moves the valve 4 via the shaft 3 in the opening direction and a closing spring 20.
  • the closing spring 20 is arranged in a housing 21 which is connected on the one hand to the valve body 2 and on the other hand carries the stroke drive 19 and at one end against the housing 21 supported.
  • the closing spring 20 is supported on a radially outwardly directed flange 22 of a hat-shaped bush 23 arranged on the shaft 3 via the connecting flange 17.
  • the stroke actuating device 6 forms a structural unit with the valve body 2 via the housing 21.
  • the cryogenic hydrogen supplied with pressure via the fuel connection 9 enters the storage space 8 formed in the hollow shaft 3 via openings 11.
  • the valve 4 opens, the hydrogen enters the overflow chamber 13 with swirl from the storage chamber 8 via the channels 12 and from there via the outlet opening 5 into the combustion chamber of the internal combustion engine.
  • the gap 16 between the stem 3 and the valve body 2 generally causes an interruption of the heat flow to the cryogenic fuel located in the hollow stem 3 or in the storage space 8.
  • the gap 16 causes fuel to be transported from the inlet chamber 10 to the overflow chamber 13 with the effect of cooling the shaft 3 over a large area on its outer surface.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
EP87106999A 1986-05-22 1987-05-14 Vorrichtung zum dosierten Zuführen eines Brennstoffen, insbesondere in den Brennraum einer Brennkraftmaschine Expired - Lifetime EP0247447B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863617255 DE3617255A1 (de) 1986-05-22 1986-05-22 Vorrichtung zum dosierten zufuehren eines brennstoffes, insbesondere in den brennraum einer brennkraftmaschine
DE3617255 1986-05-22

Publications (2)

Publication Number Publication Date
EP0247447A1 EP0247447A1 (de) 1987-12-02
EP0247447B1 true EP0247447B1 (de) 1990-01-17

Family

ID=6301398

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87106999A Expired - Lifetime EP0247447B1 (de) 1986-05-22 1987-05-14 Vorrichtung zum dosierten Zuführen eines Brennstoffen, insbesondere in den Brennraum einer Brennkraftmaschine

Country Status (5)

Country Link
US (1) US4953789A (enrdf_load_stackoverflow)
EP (1) EP0247447B1 (enrdf_load_stackoverflow)
JP (1) JPH0681941B2 (enrdf_load_stackoverflow)
DE (2) DE3617255A1 (enrdf_load_stackoverflow)
WO (1) WO1987007336A1 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5293856A (en) * 1993-03-01 1994-03-15 General Motors Corporation Fuel injection
DE19902282A1 (de) * 1999-01-21 2000-08-17 Siemens Ag Injektor für eine Einspritzanlage einer Brennkraftmaschine
US10119496B2 (en) 2014-04-15 2018-11-06 Cummins Inc. Cryogenic fuel injection and combustion

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191227756A (en) * 1912-12-02 1913-06-05 William Henry Green Improvements in Valves for Automatically Controlling the Admission of Liquid Hydrocarbon to the Working Cylinders of Internal Combustion Engines.

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2183674A (en) * 1935-09-12 1939-12-19 Erren Rudolf Arnold Internal combustion engine using hydrogen as fuel
FR844383A (fr) * 1937-10-09 1939-07-24 Perfectionnements apportés aux moteurs à huile lourde
DE733319C (de) * 1939-10-26 1943-03-24 Jakob Greis Mit einer Brennstoffeinspritzduese versehenes Einlassventil fuer Brennkraftmaschinen
AT212082B (de) * 1958-03-25 1960-11-25 Motorpal Jihlava Np Einspritzdüse zur Kraftstoffeinspritzung in Verbrennungsmotoren
CH380441A (de) * 1959-12-31 1964-07-31 Milleville Maurice Maria Josep Vorrichtung zum Einspritzen eines flüssigen oder gasförmigen Mittels unter Druck in ein Medium
CH446544A (de) * 1963-07-03 1967-11-15 Foerderung Forschung Gmbh Verfahren zum Schützen von elektrischen Kontakten
GB1161754A (en) * 1966-03-28 1969-08-20 Cav Ltd A Method of Forming a Tubular Part having a Passage Way formed in the Wall thereof
US3443755A (en) * 1966-04-15 1969-05-13 Bloom Eng Co Inc Jet structures for high-temperature environments
FR2131674A5 (enrdf_load_stackoverflow) * 1971-04-10 1972-11-10 Messer Griesheim Gmbh
US3737100A (en) * 1971-11-18 1973-06-05 Allis Chalmers Internally cooled unit injector
US4081141A (en) * 1976-09-27 1978-03-28 Almo Manifold And Tool Company Spray bars for metal rolling and flow control valves
ES471424A1 (es) * 1977-08-24 1979-01-16 Lucas Industries Ltd Tobera de inyeccion de combustible
DE2829057A1 (de) * 1978-07-01 1980-01-10 Bosch Gmbh Robert Kraftstoffeinspritzanlage
US4365756A (en) * 1980-08-11 1982-12-28 Fisher Timothy Z Fuel injection valve assembly for reciprocating gas engine
CA1148426A (en) * 1980-11-07 1983-06-21 Kenji Masaki Fuel injection valve for an automotive vehicle
DE3113475A1 (de) * 1981-04-03 1982-10-21 Robert Bosch Gmbh, 7000 Stuttgart "kraftstoffeinspritzduese"
US4471909A (en) * 1981-12-18 1984-09-18 Cummins Engine Company, Inc. Miniaturized unit fuel injector
US4564145A (en) * 1982-08-04 1986-01-14 Aisan Kogyo Kabushiki Kaisha Electromagnetic fuel injector
JPS6056165A (ja) * 1983-09-05 1985-04-01 Toyota Central Res & Dev Lab Inc 間欠式渦巻噴射弁
FR2553834B1 (fr) * 1983-10-20 1988-02-26 Sibe Soupape d'injection pour moteur a combustion interne
DE3342582C2 (de) * 1983-11-25 1986-02-13 Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt e.V., 5300 Bonn Verfahren und Vorrichtung zum Betreiben eines Wasserstoffmotors
DE3535124A1 (de) * 1985-10-02 1987-04-02 Bosch Gmbh Robert Elektromagnetisch betaetigbares kraftstoffeinspritzventil
US4726389A (en) * 1986-12-11 1988-02-23 Aisan Kogyo Kabushiki Kaisha Method of controlling injector valve

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191227756A (en) * 1912-12-02 1913-06-05 William Henry Green Improvements in Valves for Automatically Controlling the Admission of Liquid Hydrocarbon to the Working Cylinders of Internal Combustion Engines.

Also Published As

Publication number Publication date
DE3617255C2 (enrdf_load_stackoverflow) 1988-12-08
JPH0681941B2 (ja) 1994-10-19
EP0247447A1 (de) 1987-12-02
DE3617255A1 (de) 1987-11-26
US4953789A (en) 1990-09-04
DE3761450D1 (de) 1990-02-22
WO1987007336A1 (en) 1987-12-03
JPH01500767A (ja) 1989-03-16

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