EP0562276B1 - Fuel injection nozzle for an internal combustion engine - Google Patents

Fuel injection nozzle for an internal combustion engine Download PDF

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Publication number
EP0562276B1
EP0562276B1 EP93102581A EP93102581A EP0562276B1 EP 0562276 B1 EP0562276 B1 EP 0562276B1 EP 93102581 A EP93102581 A EP 93102581A EP 93102581 A EP93102581 A EP 93102581A EP 0562276 B1 EP0562276 B1 EP 0562276B1
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EP
European Patent Office
Prior art keywords
wave
nozzle body
fuel injection
injection nozzle
nozzle
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
EP93102581A
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German (de)
French (fr)
Other versions
EP0562276A1 (en
Inventor
Karl Hofmann
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0562276A1 publication Critical patent/EP0562276A1/en
Application granted granted Critical
Publication of EP0562276B1 publication Critical patent/EP0562276B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/04—Injectors with heating, cooling, or thermally-insulating means
    • 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors

Definitions

  • the invention is based on a fuel injector for internal combustion engines according to the preamble of claim 1.
  • the heat shield has the shape of an annular groove or an annular shaft with two wave crests and a wave trough and with edges protruding radially inwards and outwards. This heat shield covers most of the combustion chamber end face of the nozzle body against combustion gases and radiant heat, if it is installed in the design position, namely so that its wave crests lie on the end face of the nozzle body and their troughs rest on the underlying flange.
  • the heat shield tilts when inserted into the clamping nut or its sleeve-shaped attachment, so that the wave crests on the flange and the wave trough come to rest on the face of the nozzle body despite the positionally accurate supply. Since in this "wrong" installation position the uncovered inner circular surface of the face of the nozzle body, which is now determined by the larger diameter of the wave trough that shows up as a wave crest, the heat transfer to the nozzle body is greater than in the "correct" installation position.
  • the nozzle body heats up strongly in highly loaded internal combustion engines, so that the nozzle needle guided in the nozzle body may become jammed and / or the service life of the injection nozzle may be shortened.
  • a collar is arranged in an injection nozzle according to DE-A-38 36 413 in the inner region of the heat shield, which sits in the through opening of the flange of the clamping nut and extends axially from the through opening to the end face of the nozzle body. Due to this design, only a single installation position is possible with this type of heat shield and this must always be observed under assembly during assembly.
  • the fuel injector according to the invention with the features specified in claim 1 has the advantage that even when the heat shield is installed in the wrong position, that is, if the wave crests are valleys and the wave trough is a mountain, the heat shield covers the nozzle body over a large area, so that excessive heat transfer occurs the nozzle body is avoided. A check, especially visual inspection after assembly, for correct installation position of the heat shield can therefore be omitted.
  • the heat shield according to the invention has the advantage that, compared to the heat shield known from DE-A-30 00 061, no larger axial tension forces are required.
  • the heat shield is centered very precisely in the sleeve-shaped extension of the clamping nut.
  • FIG. 1 and 2 show the part of a fuel injection nozzle on the combustion chamber side in enlarged cross section and FIG. 3 shows part of the heat shield of the fuel injection nozzle according to FIG. 1 in greatly enlarged cross section.
  • the injection nozzle has a nozzle body 10, which is fastened together with an intermediate disk 12 by means of a clamping nut 14 to a nozzle holder, not shown in the drawing.
  • the clamping nut 14 is provided with an inner annular shoulder 16 which engages on an outer annular shoulder 18 of the nozzle body 10.
  • the clamping nut 14 also has in the area of the annular shoulder 16 an external thread 20 which engages in a nut thread in an installation bore 22 in the cylinder head 24 of the internal combustion engine.
  • a support shoulder 28 is formed on the outside on a cylindrical extension 26 of the clamping nut 14 which surrounds the nozzle body 10 below the annular shoulder 18 and which, when the injection nozzle is installed, is pressed against a support shoulder 32 in the mounting bore 22 via a sealing ring 30.
  • the injection nozzle shown is a so-called pin nozzle, in which the valve needle opening inwards is provided with a pin 34 which plunges into a nozzle bore which opens out on the combustion chamber side and narrows it down to a narrow annular gap.
  • the nozzle base 36 of the nozzle body 10 must be cooled particularly well in order to keep the coking of the spray annular gap within limits.
  • the clamping nut 14 is in the gap between the end face of the nozzle base 36 and an inwardly directed flange 38 of the extension 26 Heat shield 40 axially clamped under resilient deformation.
  • the heat shield 40 protects an annular portion of the nozzle base 36 from heat radiation and convection by hot combustion gases and dissipates heat to the clamping nut 14, from where the heat passes over a short distance into the cylinder head 24.
  • the heat shield 40 which is shown in FIG. 1 in an ideal installation position and in FIG. 2 in a possible installation position, is punched out of a sheet metal part and has the shape of an annular wave with two wave crests 42, 44 with an intermediate wave trough 46, with two the wave crests 42, 44 with flanks 50, 52 connecting the wave trough 46 and with a radially projecting outer edge region 54.
  • This outer edge region 54 which adjoins the radially outer wave crest 44, is composed of an inclined flank 56 starting from the wave crest 44 and of a flank 56 attached thereto Middle plane of the heat shield 40 adjoining ring 58 together.
  • the outer edge 54 can also fall from the crest 44 slightly inclined into the central plane.
  • the circumference 60 of the heat shield 40 is dimensioned such that the heat shield 40 fits with positioning play in the bore of the extension 26 of the clamping nut 14 near the end of the nozzle body 10 on the combustion chamber side, that is to say is aligned exactly in the center.
  • the inner width 62 of the heat shield 40 is adapted to the opening 64 of the flange 38.
  • the inner wave crest 42 extends toward the opening 64 as a narrow ring 66.
  • the design of the annular shaft of the heat shield 40 is also designed so that the inclination of the radially inner flank 50 has an angle ⁇ to the central axis of less than 40 degrees, preferably 25 degrees.
  • the radially outer flank 52 is flatter, it has an inclination b of 45 degrees to 60 degrees, preferably 50 degrees, so that the angle a + b formed by the two flanks 50, 52 is in the range of 60 degrees to 100 degrees.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Kraftstoffeinspritzdüse für Brennkraftmaschinen nach dem Oberbegriff des Anspruchs 1. Bei einer beispielsweise aus der DE-A-30 00 061 bekannt gewordenen Kraftstoffeinspritzdüse dieser Art hat die Wärmeschutzscheibe die Form einer Ringrinne oder einer Ringwelle mit zwei Wellenbergen und einem Wellental und mit radial nach innen und nach außen abstehenden Rändern. Diese Wärmeschutzscheibe deckt den größten Teil der brennraumseitigen Stirnseite des Düsenkörpers gegen Verbrennungsgase und Strahlungswärme ab, wenn sie in der konstruktiv vorgesehenen Lage eingebaut ist, nämlich so, daß ihre Wellenberge an der Stirnseite des Düsenkörpers und ihr Wellental an dem untergreifenden Flansch anliegen. Bei der Montage kann es trotz positionsgenauer Zuführung vorkommen, daß die Wärmeschutzscheibe beim Einlegen in die Spannmutter bzw. deren hülsenförmigen Ansatz kippt, so daß die Wellenberge am Flansch und das Wellental als Wellenberg an der Stirnseite des Düsenkörpers zur Anlage kommen. Da in dieser "falschen" Einbaulage die nicht abgedeckte innere Kreisfläche der Stirnseite des Düsenkörpers, die nun durch den größeren Durchmesser des als Wellenberg sich zeigenden Wellentales bestimmt wird, ist die Wärmeübertragung auf den Düsenkörper größer als bei "richtiger" Einbaulage.The invention is based on a fuel injector for internal combustion engines according to the preamble of claim 1. In a fuel injector of this type, which has become known, for example, from DE-A-30 00 061, the heat shield has the shape of an annular groove or an annular shaft with two wave crests and a wave trough and with edges protruding radially inwards and outwards. This heat shield covers most of the combustion chamber end face of the nozzle body against combustion gases and radiant heat, if it is installed in the design position, namely so that its wave crests lie on the end face of the nozzle body and their troughs rest on the underlying flange. During assembly, it can happen that the heat shield tilts when inserted into the clamping nut or its sleeve-shaped attachment, so that the wave crests on the flange and the wave trough come to rest on the face of the nozzle body despite the positionally accurate supply. Since in this "wrong" installation position the uncovered inner circular surface of the face of the nozzle body, which is now determined by the larger diameter of the wave trough that shows up as a wave crest, the heat transfer to the nozzle body is greater than in the "correct" installation position.

Dies hat zur Folge, daß sich bei hochbelasteten Brennkraftmaschinen der Düsenkörper stark erhitzt, so daß es zum Klemmen der im Düsenkörper geführten Düsennadel und/oder zu einer Verkürzung der Lebensdauer der Einspritzdüse kommen kann.As a result, the nozzle body heats up strongly in highly loaded internal combustion engines, so that the nozzle needle guided in the nozzle body may become jammed and / or the service life of the injection nozzle may be shortened.

Um diesen Nachteil zu beheben ist bei einer Einspritzdüse nach der DE-A-38 36 413 im inneren Bereich der Wärmeschutzscheibe ein Kragen angeordnet, der in der Durchgangsöffnung des Flansches der Spannmutter sitzt und sich axial von der Durchgangsöffnung bis zur Stirnseite des Düsenkörpers erstreckt. Durch diese Gestaltung ist bei dieser Art Wärmeschutzscheibe nur eine einzige Einbaulage möglich und diese ist bei der Montage stets unter genauer Kontrolle einzuhalten.To remedy this disadvantage, a collar is arranged in an injection nozzle according to DE-A-38 36 413 in the inner region of the heat shield, which sits in the through opening of the flange of the clamping nut and extends axially from the through opening to the end face of the nozzle body. Due to this design, only a single installation position is possible with this type of heat shield and this must always be observed under assembly during assembly.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Kraftstoffeinspritzdüse mit den im Anspruch 1 angegebenen Merkmalen hat den Vorteil, daß selbst bei verkehrter Einbaulage der Wärmeschutzscheibe, das ist, wenn sich die Wellenberge als Täler und das Wellental als Berg zeigen, die Wärmeschutzscheibe den Düsenkörper großflächig abdeckt, so daß übermäßige Wärmeübertragung auf den Düsenkörper vermieden wird. Eine Kontrolle, insbesondere Sichtkontrolle nach der Montage, auf richtige Einbaulage der Wärmeschutzscheibe kann daher unterbleiben. Ferner hat die erfindungsgemäße Wärmeschutzscheibe den Vorteil, daß gegenüber der aus der DE-A-30 00 061 bekannten Wärmeschutzscheibe keine größeren axialen Spannungskräfte erforderlich sind. Außerdem zentriert sich die Wärmeschutzscheibe in dem hülsenförmigen Ansatz der Spannmutter sehr genau.The fuel injector according to the invention with the features specified in claim 1 has the advantage that even when the heat shield is installed in the wrong position, that is, if the wave crests are valleys and the wave trough is a mountain, the heat shield covers the nozzle body over a large area, so that excessive heat transfer occurs the nozzle body is avoided. A check, especially visual inspection after assembly, for correct installation position of the heat shield can therefore be omitted. Furthermore, the heat shield according to the invention has the advantage that, compared to the heat shield known from DE-A-30 00 061, no larger axial tension forces are required. In addition, the heat shield is centered very precisely in the sleeve-shaped extension of the clamping nut.

Durch die in den Unteransprüchen aufgeführten Merkmale sind vorteilhafte Weiterbildungen der Erfindung möglich.Advantageous developments of the invention are possible through the features listed in the subclaims.

Zeichnungdrawing

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher erläutert. Es zeigen Figur 1 und 2 den brennraumseitigen Teil einer Kraftstoffeinspritzdüse vergrößert im Längsschnitt und Figur 3 einen Teil der Wärmeschutzscheibe der Kraftstoffeinspritzdüse nach Figur 1 stark vergrößert im Querschnitt.An embodiment of the invention is shown in the drawing and is explained in more detail below. 1 and 2 show the part of a fuel injection nozzle on the combustion chamber side in enlarged cross section and FIG. 3 shows part of the heat shield of the fuel injection nozzle according to FIG. 1 in greatly enlarged cross section.

Beschreibung des Ausführungsbeispiels.Description of the embodiment.

Die Einspritzdüse hat einen Düsenkörper 10, der zusammen mit einer Zwischenscheibe 12 mittels einer Spannmutter 14 an einem in der Zeichnung nicht dargestellten Düsenhalter befestigt ist. Zu diesem Zweck ist die Spannmutter 14 mit einer inneren Ringschulter 16 versehen, die an einer äußeren Ringschulter 18 des Düsenkörpers 10 angreift. Die Spannmutter 14 hat ferner im Bereich der Ringschulter 16 ein Außengewinde 20, welches in ein Muttergewinde in einer Einbaubohrung 22 im Zylinderkopf 24 der Brennkraftmaschine eingreift. An einem den Düsenkörper 10 unterhalb der Ringschulter 18 umgreifenden zylindrischen Ansatz 26 der Spannmutter 14 ist außen eine Stützschulter 28 gebildet, die bei eingebauter Einspritzdüse über einen Dichtring 30 gegen eine Stützschulter 32 in der Einbaubohrung 22 gepreßt ist. Die dargestellte Einspritzdüse ist eine sogenannte Zapfendüse, bei welcher die nach innen öffnende Ventilnadel mit einem Zapfen 34 versehen ist, der in eine brennraumseitig ausmündende Düsenbohrung taucht und diese bis auf einen schmalen Ringspalt verengt. Bei derartigen Einspritzdüsen muß der Düsenboden 36 des Düsenkörpers 10 besonders gut gekühlt werden, um die Verkokung des Spritz-Ringspalts in Grenzen zu halten. Zu diesem Zweck ist in den Spalt zwischen der Stirnseite des Düsenbodens 36 und einem nach innen gekehrten Flansch 38 des Ansatzes 26 der Spannmutter 14 eine Wärmeschutzscheibe 40 unter federnder Verformung axial eingespannt. Die Wärmeschutzscheibe 40 schützt einen ringförmigen Teilbereich des Düsenbodens 36 vor Wärmestrahlung und Konvektion durch heiße Verbrennungsgase und leitet Wärme auf die Spannmutter 14 ab, von wo die Wärme auf kurzem Wege in den Zylinderkopf 24 übergeht.The injection nozzle has a nozzle body 10, which is fastened together with an intermediate disk 12 by means of a clamping nut 14 to a nozzle holder, not shown in the drawing. For this purpose, the clamping nut 14 is provided with an inner annular shoulder 16 which engages on an outer annular shoulder 18 of the nozzle body 10. The clamping nut 14 also has in the area of the annular shoulder 16 an external thread 20 which engages in a nut thread in an installation bore 22 in the cylinder head 24 of the internal combustion engine. A support shoulder 28 is formed on the outside on a cylindrical extension 26 of the clamping nut 14 which surrounds the nozzle body 10 below the annular shoulder 18 and which, when the injection nozzle is installed, is pressed against a support shoulder 32 in the mounting bore 22 via a sealing ring 30. The injection nozzle shown is a so-called pin nozzle, in which the valve needle opening inwards is provided with a pin 34 which plunges into a nozzle bore which opens out on the combustion chamber side and narrows it down to a narrow annular gap. In the case of such injection nozzles, the nozzle base 36 of the nozzle body 10 must be cooled particularly well in order to keep the coking of the spray annular gap within limits. For this purpose, the clamping nut 14 is in the gap between the end face of the nozzle base 36 and an inwardly directed flange 38 of the extension 26 Heat shield 40 axially clamped under resilient deformation. The heat shield 40 protects an annular portion of the nozzle base 36 from heat radiation and convection by hot combustion gases and dissipates heat to the clamping nut 14, from where the heat passes over a short distance into the cylinder head 24.

Die Wärmeschutzscheibe 40, die in Figur 1 in einer idealen Einbaulage und in Figur 2 in einer möglichen Einbaulage dargestellt ist, ist aus einem Blechteil gestanzt und hat die Form einer Ringwelle mit zwei Wellenbergen 42, 44 mit einem dazwischenliegenden Wellental 46, mit zwei die Wellenberge 42, 44 mit dem Wellental 46 verbindenden Flanken 50, 52 und mit einem radial abstehenden Außenrandbereich 54. Dieser an den radial äußeren Wellenberg 44 sich anschließende Außenrandbereich 54 setzt sich aus einer geneigten, vom Wellenberg 44 ausgehenden Flanke 56 und aus einem sich daran in der Mittelebene der Wärmeschutzscheibe 40 anschließenden Ring 58 zusammen. Der Außenrand 54 kann auch vom Wellenberg 44 leicht geneigt in die Mittelebene abfallen. Der Umfang 60 der Wärmeschutzscheibe 40 ist so bemessen, daß die Wärmeschutzscheibe 40 mit Positionierspiel in die Bohrung des Ansatzes 26 der Spannmutter 14 nahe dem brennraumseitigen Ende des Düsenkörpers 10 paßt, also zentrisch genau ausgerichtet ist. Die innere Weite 62 der Wärmeschutzscheibe 40 ist der Öffnung 64 des Flansches 38 angepaßt. Zur Öffnung 64 hin erstreckt sich der innere Wellenberg 42 als schmaler Ring 66.The heat shield 40, which is shown in FIG. 1 in an ideal installation position and in FIG. 2 in a possible installation position, is punched out of a sheet metal part and has the shape of an annular wave with two wave crests 42, 44 with an intermediate wave trough 46, with two the wave crests 42, 44 with flanks 50, 52 connecting the wave trough 46 and with a radially projecting outer edge region 54. This outer edge region 54, which adjoins the radially outer wave crest 44, is composed of an inclined flank 56 starting from the wave crest 44 and of a flank 56 attached thereto Middle plane of the heat shield 40 adjoining ring 58 together. The outer edge 54 can also fall from the crest 44 slightly inclined into the central plane. The circumference 60 of the heat shield 40 is dimensioned such that the heat shield 40 fits with positioning play in the bore of the extension 26 of the clamping nut 14 near the end of the nozzle body 10 on the combustion chamber side, that is to say is aligned exactly in the center. The inner width 62 of the heat shield 40 is adapted to the opening 64 of the flange 38. The inner wave crest 42 extends toward the opening 64 as a narrow ring 66.

Die Gestaltung der Ringwelle der Wärmeschutzscheibe 40 ist ferner so ausgelegt, daß die Neigung der radial inneren Flanke 50 einen Winkel a zur Mittelachse von weniger als 40 Grad, vorzugsweise 25 Grad hat. Die radial äußere Flanke 52 ist demgegenüber flacher, sie hat eine Neigung b von 45 Grad bis 60 Grad, vorzugsweise 50 Grad, so daß der von den beiden Flanken 50, 52 gebildete Winkel a + b im Bereich von 60 Grad bis 100 Grad liegt.The design of the annular shaft of the heat shield 40 is also designed so that the inclination of the radially inner flank 50 has an angle α to the central axis of less than 40 degrees, preferably 25 degrees. In contrast, the radially outer flank 52 is flatter, it has an inclination b of 45 degrees to 60 degrees, preferably 50 degrees, so that the angle a + b formed by the two flanks 50, 52 is in the range of 60 degrees to 100 degrees.

Ergänzend wird bemerkt, daß die Ausdrücke Wellenberg und Wellental vorhergehend auf die in Figur 1 dargestellte ideale Einbaulage der Wärmeschutzscheibe 40 bezogen sind. Obwohl diese Bezeichnungen vom Betrachter her auf die Einbaulage nach Figur 2 nicht mehr zutreffen, sind sie für diese Einbaulage dennoch beibehalten.In addition, it is noted that the terms Wellenberg and Wellental previously relate to the ideal installation position of the heat shield 40 shown in FIG. Although these designations no longer apply to the installation position according to FIG. 2 from the viewer, they are nevertheless retained for this installation position.

Claims (4)

  1. Fuel injection nozzle for internal combustion engines with a clamping nut (14) which clamps a nozzle body (10) against a nozzle holder and has a sleeve-shaped shoulder (26) which surrounds the nozzle body (10) and has a flange (38) which reaches under the end of the nozzle body (10), leaving a gap, and with an annular heat insulation washer (40) which is clamped into the gap between the nozzle body (10) and the flange (38) and has the shape of an annular wave consisting of material of uniform thickness with two wave crests (42, 44) and a wave trough (46) between them, by means of which the heat insulation washer (40) rests under axial stress against the end of the nozzle body (10) and of the axially opposite side of the flange (38) of the shoulder (26), the wave crests (42, 44) being connected to the wave trough (46) by flanks (50, 52), characterized in that the steepness of the radially inner flank (50) is less than 40° relative to the centre line, and in that an outer edge region (54) adjoining the radially outer wave crest (44) falls away to the centre plain and its boundary edge (60) is matched to the inside diameter of the shoulder (26) of the clamping nut (14) with a positioning play.
  2. Fuel injection nozzle according to Claim 1, characterized in that the steepness of the radially inner flank (50) is 25° relative to the centre line.
  3. Fuel injection nozzle according to Claim 1 or 2, characterized in that the flanks (50, 52) forming the wave trough (46) enclose an angle (a + b) in the range of from 60° to 100°, preferably 75°.
  4. Fuel injection nozzle according to one of Claims 1 to 3, characterized in that the outer edge region (54) adjoining the radially outer wave crest (44) is formed from an inclined flank (56) adjoining the wave crest (44) and a radially extending ring (58).
EP93102581A 1992-03-26 1993-02-19 Fuel injection nozzle for an internal combustion engine Expired - Lifetime EP0562276B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4209837A DE4209837A1 (en) 1992-03-26 1992-03-26 Fuel injection nozzle for internal combustion engines
DE4209837 1992-03-26

Publications (2)

Publication Number Publication Date
EP0562276A1 EP0562276A1 (en) 1993-09-29
EP0562276B1 true EP0562276B1 (en) 1997-05-07

Family

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Application Number Title Priority Date Filing Date
EP93102581A Expired - Lifetime EP0562276B1 (en) 1992-03-26 1993-02-19 Fuel injection nozzle for an internal combustion engine

Country Status (4)

Country Link
EP (1) EP0562276B1 (en)
JP (1) JP3381958B2 (en)
DE (2) DE4209837A1 (en)
ES (1) ES2100381T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3329998B2 (en) * 1995-10-17 2002-09-30 三菱電機株式会社 In-cylinder fuel injection valve
DE102015223605A1 (en) * 2015-11-27 2017-06-01 Robert Bosch Gmbh Injector arrangement with thermal protection sleeve
DE102015225175A1 (en) * 2015-12-15 2017-06-22 Robert Bosch Gmbh Injector with improved thermal behavior
GB2552384A (en) * 2016-07-22 2018-01-24 Delphi Int Operations Luxembourg Sarl Nozzle for a fuel injector
JP2022001750A (en) * 2020-06-22 2022-01-06 株式会社クボタ Sub chamber type diesel engine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3836413A1 (en) * 1988-10-26 1990-05-03 Bosch Gmbh Robert FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES

Also Published As

Publication number Publication date
JP3381958B2 (en) 2003-03-04
DE59306363D1 (en) 1997-06-12
ES2100381T3 (en) 1997-06-16
EP0562276A1 (en) 1993-09-29
JPH0626421A (en) 1994-02-01
DE4209837A1 (en) 1993-09-30

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