EP0460381A1 - Injecteur à plusieurs jets d'injection avec commande de coupe en travers - Google Patents

Injecteur à plusieurs jets d'injection avec commande de coupe en travers Download PDF

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Publication number
EP0460381A1
EP0460381A1 EP91105673A EP91105673A EP0460381A1 EP 0460381 A1 EP0460381 A1 EP 0460381A1 EP 91105673 A EP91105673 A EP 91105673A EP 91105673 A EP91105673 A EP 91105673A EP 0460381 A1 EP0460381 A1 EP 0460381A1
Authority
EP
European Patent Office
Prior art keywords
needle
injection
nozzle
control
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.)
Granted
Application number
EP91105673A
Other languages
German (de)
English (en)
Other versions
EP0460381B1 (fr
Inventor
Alfred Ing. Neitz
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.)
MAN Truck and Bus SE
Original Assignee
MAN Nutzfahrzeuge AG
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 MAN Nutzfahrzeuge AG filed Critical MAN Nutzfahrzeuge AG
Publication of EP0460381A1 publication Critical patent/EP0460381A1/fr
Application granted granted Critical
Publication of EP0460381B1 publication Critical patent/EP0460381B1/fr
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
    • F02M61/02—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 of valveless type
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • F02M45/08—Injectors peculiar thereto
    • F02M45/083—Having two or more closing springs acting on injection-valve
    • 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
    • F02M61/08—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 the valves opening in direction of fuel flow
    • 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
    • F02M61/161—Means for adjusting injection-valve lift
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86718—Dividing into parallel flow paths with recombining
    • Y10T137/86759—Reciprocating
    • Y10T137/86791—Piston

Definitions

  • the invention relates to a cross-section-controlled multi-jet injection nozzle according to the preamble of the claim.
  • the hollow needle can be supplied with fuel pressure from a pressure chamber via a pressure shoulder. From a predetermined fuel pressure, the hollow needle opens against the force of a first compression spring and opens the path of the fuel to the nozzle needle and a first injection hole. The nozzle needle opens when there is a higher load on the engine and one resulting higher fuel pressure from an injection pump then against the force of a second compression spring and the injection of fuel into the combustion chamber takes place through second injection bores until the nozzle needle closes and the injection ends due to a decrease in the fuel pressure.
  • Such an injection nozzle achieves a gradation of the amount of fuel injected according to the direction and manner of the fuel jet.
  • a disadvantage is the still lack of consistency of a high fuel pressure in front of the injection bores across the map area.
  • Another disadvantage is the use of multiple spray holes. If only one hole is flowed through in the partial load range, the unused second hole, which is reserved for the full load range, cokes.
  • the invention has for its object to split the amount of fuel injected into several jets with a favorable ratio of spray cross-section to the extent of the cross-section flowed through and at the same time to keep the injection pressure upstream of the injection channels approximately constant over the entire map area.
  • the opening cross-sections of the control needle can be varied, so that in all operating states of the internal combustion engine there is always a sufficiently high fuel pressure in front of the injection channels, which ensures that, with air-distributed injection, a high atomization fineness for optimal mixture formation to achieve.
  • the maximum injection pressure in the lower speed and load range will be as high as in the upper speed and load range.
  • control device is characterized by the features of claim 2.
  • Self-regulation of the fuel pressure can be carried out in a simple manner with the aid of appropriately coordinated springs, which release a larger outlet cross section as the pressure increases and vice versa.
  • the second compression spring is provided to compensate for the effective pressure area added when the nozzle is opened.
  • the first compression spring releases an outlet cross section for engine idling or for the lower speed and load range, while by overcoming the second compression spring connected in parallel, the outlet cross section adapts to the increasing speed and load.
  • the limit stop of the spray cross-section at full load and nominal speed is achieved by the fixed stop.
  • control of the stroke of the control needle is accomplished by control by means of map-controlled electronics.
  • a wedge piece can be used as a suitable mechanical actuator for limiting the control needle stroke, which is controlled directly or indirectly by the electronics and thus limits the stroke of the same in an infinitely variable manner.
  • the hollow needle ensures an additional seal for the spline, so that dripping of fuel is avoided if the spline should not be absolutely tight.
  • Figure 1 shows a schematic representation of a longitudinal section through an injection nozzle.
  • This essentially consists of a nozzle holder 1, a nozzle body 2 and a control needle 3 which is axially movably guided in the nozzle body 2.
  • the control needle 3 has a conical sealing surface 4 at its combustion chamber end, which is designed according to the invention as a spline 5.
  • the control needle 3 is held in its closed position at its end facing away from the combustion chamber by a prestressed first compression spring 6.
  • the first compression spring 6 is supported on the one hand against the nozzle holder 1 and on the other hand against a stop 7 connected to the control needle 3.
  • a ring stop 8 is provided which cooperates with the stop 7.
  • This stop 8 is held in the starting position by means of a second prestressed compression spring 9, the ring stop 8 being supported against the nozzle holder 1. Between the stop 7 and the ring stop 8 is provided with a gap with the thickness h1.
  • the second compression spring 9 is arranged coaxially with the control needle 3 and the first compression spring 6 surrounding it.
  • Fuel is supplied to a pressure chamber 9a of the injection nozzle via an inlet bore 10 by an injection pump. Under the pressure of the fuel, the control needle 3 opens in the direction of a combustion chamber by overcoming the force of the prestressed first compression spring 6. The fuel is then sprayed into the combustion chamber via several jets in accordance with the design of the spline 5 described in more detail in FIGS. 2 and 3.
  • the spray cross section can be graduated by the stroke of the control needle 3.
  • the stroke of the control needle 3 is initially limited by the ring stop 8 when the stroke has exhausted the path h1.
  • the stroke of the control needle 3 is already increased by overcoming the force of the second pressure spring 9, which is connected in parallel with the first compression spring 6, until the maximum stroke of the control needle 3 at full load after exhausting a stroke h2 by a fixed stop 11 is limited, against which the ring stop 8 starts.
  • the spring constant of the second compression spring 9 is to be selected much smaller than that of the first compression spring 6.
  • the fixed stop 11 is designed as an annular surface in the nozzle holder 1.
  • a bore 10a is provided to discharge leakage.
  • FIG. 2 A detailed view of the injection nozzle in longitudinal section at the end on the combustion chamber side is shown in FIG. 2.
  • the left half represents the injection nozzle in the closed state, while the right half shows it in the open state.
  • the control needle 3 has the axially and radially directed spline 5, which is divided into a conical sealing surface 4 and groove flanks 13.
  • the injection of fuel is initiated - as shown in the right half - in that the control needle 3 opens in the direction of the combustion chamber as a result of the effect of the fuel pressure on the cross-sectional difference between the larger first surface 14 and the smaller second surface 15, as does the right half the figure 2 represents.
  • the fuel is supplied to the spline 5 via a groove 17 and an annular space 18.
  • One of the injection cross sections 16, as it results when the control needle 3 is opened, is shown drawn out.
  • a section III-III of Figure 2 is shown in Figure 3.
  • the fuel first passes through the groove 17 of the control needle 3 in front of the sealing surface 4 shown in FIG. 2, which is conical in accordance with the example shown.
  • the fuel is sprayed off via the injection cross sections 16.
  • the injection cross section 16 is delimited by the conical sealing surface 4 (FIG. 2) and the groove flanks 13.
  • the injection cross sections 16 can have different sizes.
  • a sector 19 is shown in FIG. 3, ie not in section.
  • FIG. 4 An alternative solution to the control of the control needle 3 can be seen in FIG. 4.
  • the stroke of the control needle 3 is limited by a wedge piece 20, which corresponds to an end stop 21 in the movement indicated by the arrow, so that the stroke movement of the control needle 3 can be infinitely limited in accordance with a game h.
  • the wedge piece 20 is actuated by an actuator 22, which can be acted upon by map-controlled electronics.
  • FIG. 5 A variation of the injection nozzle as shown in FIG. 1 is shown in FIG. 5.
  • the control needle 3 is connected in parallel with a hollow needle 23 which is coaxially movable with respect to this.
  • the hollow needle 23 is held in the initial position by a prestressed third compression spring 24 and additionally seals the spline 5 against the pressure chamber 9a by means of an upstream conical surface 25.
  • the hollow needle 23 first opens against the force of the third compression spring 24.
  • the difference between the areas of a pressure shoulder 26 and that of the liquid pressure in the closed position does not function as the effective pressure area exposed conical surface 25.
  • the fuel passes into the annular space 18 via grooves 17 and then opens - as described under FIG. 1 - the control needle 3.
  • the advantage of such a design is that the spline 5 of the sole sealing function is relieved.
  • Figure 6 shows in detail the combustion chamber end of the injection nozzle in the version according to Figure 5.
  • the control needle 3 is surrounded by the hollow needle 23, which additionally seals the spline 5 against the pressure chamber 9a ( Figure 5) by the conical surface 25, as in the left half of the figure is shown.
  • the hollow needle 23 By increasing the fuel pressure, the hollow needle 23 first lifts off the conical surface 25, as shown in the right half of the figure. The fuel under pressure then flows via the grooves 17 into the annular space 18 in front of the spline 5. Contrary to the force of the compression springs 6 and 9, the control needle 3 opens as described in FIG. 1.
  • the hollow needle 23 first opens according to FIGS. 5 and 6, or the control needle 3 opens immediately according to FIGS. 1 and 2 and releases the required injection cross section 16.
  • the control of the spray cross-section can be done with the help of the fuel pressure and corresponding effective areas in a known manner in connection with stepped compression springs 6, 9, 24 or by means of a map-dependent, preferably electronically controlled, stroke limiting device (FIG. 4). Injection pressure and injection duration can thus be optimally coordinated.
  • the spray channels are closed by moving the control needle 3 back.
  • the fuel still present in the spray channels is pressed out under pressure and droplet formation at the end of the injection is avoided.
  • the fuel volume already downstream of the hollow needle cannot flow into the combustion chamber in an uncontrolled manner.
  • the continuous axial movement of the control needle 3 with changing lifting heights depending on the engine operation ensures that, despite the tendency to coke the teeth exposed to fire, the proposed cross-sectional spray control is retained.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP91105673A 1990-05-30 1991-04-10 Injecteur à plusieurs jets d'injection avec commande de coupe en travers Expired - Lifetime EP0460381B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4017391A DE4017391C2 (de) 1990-05-30 1990-05-30 Spritzquerschnittgesteuerte Einspritzdüse für eine luftverteilte Kraftstoffeinspritzung bei einer luftverdichtenden Brennkraftmaschine
DE4017391 1990-05-30

Publications (2)

Publication Number Publication Date
EP0460381A1 true EP0460381A1 (fr) 1991-12-11
EP0460381B1 EP0460381B1 (fr) 1993-05-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91105673A Expired - Lifetime EP0460381B1 (fr) 1990-05-30 1991-04-10 Injecteur à plusieurs jets d'injection avec commande de coupe en travers

Country Status (5)

Country Link
US (1) US5282577A (fr)
EP (1) EP0460381B1 (fr)
JP (1) JPH04231675A (fr)
DE (2) DE4017391C2 (fr)
RU (1) RU2027062C1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2668545A1 (fr) * 1990-10-27 1992-04-30 Mtu Friedrichshafen Gmbh Injecteur de carburant pour moteurs a combustion interne.
WO1993025814A1 (fr) * 1992-06-10 1993-12-23 Robert Bosch Gmbh Injecteur de carburant pour moteurs a combustion interne
GB2282183A (en) * 1993-09-22 1995-03-29 Bosch Gmbh Robert I.c.engine fuel injector
EP0697518A1 (fr) * 1994-08-19 1996-02-21 Lucas Industries Public Limited Company Buse d'injection de carburant
FR2726863A1 (fr) * 1994-11-11 1996-05-15 Bosch Gmbh Robert Injecteur de carburant de moteur a combustion interne a construction dite ouverte vers l'exterieur
EP3404235A1 (fr) * 2017-05-19 2018-11-21 Winterthur Gas & Diesel AG Gros moteur diesel et procédé de fonctionnement d'un gros moteur diesel
CN110193285A (zh) * 2019-07-12 2019-09-03 中电华创(苏州)电力技术研究有限公司 一种scr脱硝系统的氨喷射混流装置

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228360A1 (de) * 1992-06-10 1993-12-16 Bosch Gmbh Robert Kraftstoff-Einspritzdüse für Brennkraftmaschinen
DE4235948C2 (de) * 1992-10-23 1995-08-31 Mtu Friedrichshafen Gmbh Kraftstoffeinspritzdüse für Brennkraftmaschinen
US5435884A (en) * 1993-09-30 1995-07-25 Parker-Hannifin Corporation Spray nozzle and method of manufacturing same
DE4340305C2 (de) * 1993-11-26 1998-02-19 Daimler Benz Ag Kraftstoffeinspritzdüse für eine Brennkraftmaschine
DE4437847A1 (de) * 1994-10-22 1996-04-25 Bosch Gmbh Robert Einspritzdüse
DE19620521A1 (de) * 1996-05-22 1997-11-27 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
US5713327A (en) * 1997-01-03 1998-02-03 Tilton; Charles L. Liquid fuel injection device with pressure-swirl atomizers
DE19849956A1 (de) * 1998-09-28 2000-04-20 Case Germany Gmbh Einspritzdüse
US6109540A (en) * 1998-10-29 2000-08-29 Caterpillar Inc. Outwardly opening nozzle valve for a fuel injector
DE10031579A1 (de) * 2000-06-29 2002-01-17 Bosch Gmbh Robert Druckgesteuerter Injektor mit Vario-Register-Einspritzdüse
US6454189B1 (en) 2000-07-03 2002-09-24 Caterpillar Inc. Reverse acting nozzle valve and fuel injector using same
US6626381B2 (en) * 2001-11-08 2003-09-30 Bombardier Motor Corporation Of America Multi-port fuel injection nozzle and system and method incorporating same
US20040083466A1 (en) * 2002-10-29 2004-04-29 Dapp Michael C. Hardware parser accelerator
DE10259799A1 (de) * 2002-12-19 2004-07-29 Robert Bosch Gmbh Brennstoffeinspritzventil
EP1731481B1 (fr) * 2004-02-06 2013-09-04 Mayekawa Mfg. Co., Ltd. Procede et appareil de fabrication d azote pateux
CA2473639C (fr) * 2004-07-09 2006-11-14 Westport Research Inc. Injecteur de carburant
DE102007036196A1 (de) * 2007-08-02 2009-02-05 Cosma Engineering Europe Ag Vorrichtung für die Zufuhr eines Fluids für Explosionsumformen
EP2857670B1 (fr) 2013-10-04 2018-12-12 Continental Automotive GmbH Injecteur à carburant
DE102014200756A1 (de) * 2014-01-17 2015-07-23 Robert Bosch Gmbh Gasinjektor zum Direkteinblasen von gasförmigem Kraftstoff in einen Brennraum
RU2613009C1 (ru) * 2015-12-04 2017-03-14 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский автомобильно-дорожный государственный технический университет (МАДИ)" Электрогидравлическая форсунка для дизеля
US10208700B2 (en) * 2016-05-31 2019-02-19 Ford Global Technologies, Llc Method to control fuel spray duration for internal combustion engines
US10570865B2 (en) * 2016-11-08 2020-02-25 Ford Global Technologies, Llc Fuel injector with variable flow direction

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949596A1 (de) * 1979-12-10 1981-06-11 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Luftverdichtende, direkteinspritzende brennkraftmaschine
GB2111124A (en) * 1981-12-10 1983-06-29 Bosch Gmbh Robert A fuel injection nozzle for combustion engines
DE3410476A1 (de) * 1983-08-13 1985-02-21 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoff-einspritzduese fuer brennkraftmaschinen

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE435334C (de) * 1925-03-07 1926-10-11 Neumann Werner Einspritzventil mit zylindrischem Nadelfortsatz fuer luftlose Einspritzung
US2035203A (en) * 1934-02-21 1936-03-24 John W Smith Method of and apparatus for feeding fuel
DE830591C (de) * 1939-06-13 1952-02-07 Daimler Benz Ag Einspritzduese, insbesondere fuer Brennkraftmaschinen
CH329505A (de) * 1955-02-23 1958-04-30 Saurer Ag Adolph Verfahren zum Steuern des Durchflussquerschnittes von Einspritzdüsen für Brennkraftmaschinen und Einspritzdüse zur Durchführung des Verfahrens
US2914257A (en) * 1959-01-02 1959-11-24 Wiant Hugh Combination burner nozzle
DE2710138A1 (de) * 1977-03-09 1978-09-14 Maschf Augsburg Nuernberg Ag Mehrloch-einspritzduese
DE2711389A1 (de) * 1977-03-16 1978-09-21 Bosch Gmbh Robert Verfahren zur oeffnungshubeinstellung bei einer kraftstoffeinspritzduese sowie kraftstoffeinspritzduese zur durchfuehrung desselben
CH622588A5 (fr) * 1977-09-01 1981-04-15 Sulzer Ag
DE3105686A1 (de) * 1981-02-17 1982-09-02 Robert Bosch Gmbh, 7000 Stuttgart "kraftstoffeinspritzduese"
US4513916A (en) * 1982-10-14 1985-04-30 Lucas Industries Fuel injection nozzle
DE3311138A1 (de) * 1983-03-26 1984-10-04 L'Orange GmbH, 7000 Stuttgart Kraftstoffeinspritzanlage fuer eine brennkraftmaschine
US4817873A (en) * 1985-11-13 1989-04-04 Orbital Engine Company Proprietary Limited Nozzles for in-cylinder fuel injection systems
GB2193252B (en) * 1986-08-01 1991-02-06 Orbital Eng Pty Improvements relating to the injection of fuel to an engine
DE3719459A1 (de) * 1987-06-11 1988-12-29 Bosch Gmbh Robert Kraftstoff-einspritzduese fuer brennkraftmaschinen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949596A1 (de) * 1979-12-10 1981-06-11 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Luftverdichtende, direkteinspritzende brennkraftmaschine
GB2111124A (en) * 1981-12-10 1983-06-29 Bosch Gmbh Robert A fuel injection nozzle for combustion engines
DE3410476A1 (de) * 1983-08-13 1985-02-21 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoff-einspritzduese fuer brennkraftmaschinen

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2668545A1 (fr) * 1990-10-27 1992-04-30 Mtu Friedrichshafen Gmbh Injecteur de carburant pour moteurs a combustion interne.
WO1993025814A1 (fr) * 1992-06-10 1993-12-23 Robert Bosch Gmbh Injecteur de carburant pour moteurs a combustion interne
GB2282183A (en) * 1993-09-22 1995-03-29 Bosch Gmbh Robert I.c.engine fuel injector
US5518184A (en) * 1993-09-22 1996-05-21 Robert Bosch Gmbh Fuel injection nozzle for internal combustion engines
GB2282183B (en) * 1993-09-22 1997-04-09 Bosch Gmbh Robert Fuel injection nozzle for internal combustion engines
EP0697518A1 (fr) * 1994-08-19 1996-02-21 Lucas Industries Public Limited Company Buse d'injection de carburant
FR2726863A1 (fr) * 1994-11-11 1996-05-15 Bosch Gmbh Robert Injecteur de carburant de moteur a combustion interne a construction dite ouverte vers l'exterieur
US5758829A (en) * 1994-11-11 1998-06-02 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
EP3404235A1 (fr) * 2017-05-19 2018-11-21 Winterthur Gas & Diesel AG Gros moteur diesel et procédé de fonctionnement d'un gros moteur diesel
CN110193285A (zh) * 2019-07-12 2019-09-03 中电华创(苏州)电力技术研究有限公司 一种scr脱硝系统的氨喷射混流装置

Also Published As

Publication number Publication date
RU2027062C1 (ru) 1995-01-20
EP0460381B1 (fr) 1993-05-12
DE4017391C2 (de) 1993-10-07
US5282577A (en) 1994-02-01
DE4017391A1 (de) 1991-12-12
JPH04231675A (ja) 1992-08-20
DE59100106D1 (de) 1993-06-17

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