EP0690221A1 - Fuel injection device for internal combustion engines - Google Patents

Fuel injection device for internal combustion engines Download PDF

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Publication number
EP0690221A1
EP0690221A1 EP95108103A EP95108103A EP0690221A1 EP 0690221 A1 EP0690221 A1 EP 0690221A1 EP 95108103 A EP95108103 A EP 95108103A EP 95108103 A EP95108103 A EP 95108103A EP 0690221 A1 EP0690221 A1 EP 0690221A1
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EP
European Patent Office
Prior art keywords
pressure
fuel injection
injection device
cylinder head
head cover
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
EP95108103A
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German (de)
French (fr)
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EP0690221B1 (en
Inventor
Bernhard Dipl.-Ing. Bronkal
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/006—Camshaft or pushrod housings
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
    • 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
    • F02M2200/18—Fuel-injection apparatus having means for maintaining safety not otherwise provided for
    • F02M2200/185—Fuel-injection apparatus having means for maintaining safety not otherwise provided for means for improving crash safety

Definitions

  • the invention is based on a fuel injection device for internal combustion engines according to the preamble of claim 1.
  • a high-pressure fuel pump which is usually designed as a piston pump, delivers fuel from a low-pressure space formed by the storage tank into a high-pressure collecting space, which is connected via high-pressure lines to the individual injection valves projecting into the combustion chamber of the internal combustion engine to be supplied, this common Pressure storage system (common rail) is held at a certain pressure by a pressure control device, so that the desired injection pressure can be determined over the entire operating map of the internal combustion engine at the individual injection valves.
  • the known fuel injection devices have the disadvantage that the high-pressure plenum in the form of a tube or a distributor strip is designed there as a separate component, which is external by means of additional Holding devices on the cylinder head, the cover or the engine block is attached.
  • the separately attached manifolds are more susceptible to vibration, which can have a negative impact on the metering accuracy of the entire fuel injection system, so that the known fuel injection devices do not meet today's requirements in terms of cost-effective production and high metering accuracy.
  • the fuel injection device according to the invention with the characterizing features of claim 1 has the advantage that the direct integration of the manifold forming the high-pressure manifold into the wall of the cylinder head cover, the vibration accelerations on the manifold can be reduced, which is particularly due to the metering accuracy arranged on the manifold Control and measuring elements and affects the high pressure lines.
  • the individual component loads are reduced so that they can be carried out more cost-effectively and lastingly.
  • a further cost advantage is achieved since separate fastening elements for the distributor strip can now be dispensed with.
  • the arrangement of the distributor strip of the fuel injection device according to the invention requires very little engine space, is more visually appealing and considerably reduces the costs of an additional surface treatment (for example painting).
  • Another advantage is the great protection of the integrated distributor strip against destruction in the event of a motor vehicle accident and the now possible emergency operation in the event of mechanical damage to the distributor strip (for example cracks).
  • the high-pressure lines to the injection valves can be made shorter or, if the cylinder head cover is designed accordingly, can be integrated into it and fastened there.
  • the manufacturing cost of the fuel injection device is reduced by the possibility of preassembly of the common rail module, the cylinder head cover being used as a module carrier. This also simplifies the possibility of assembly errors, since all specifically different parts (manifold, high pressure lines, injection valves, etc.) are already pre-assembled in one module.
  • a further advantage is achieved in particular when using an aluminum cylinder head cover, in which the heat dissipation of the fuel flowing through the distributor strip is now carried out over a larger area to the ambient air, so that the fuel in the distributor strip can be cooled better and a maximum permissible fuel temperature is not exceeded.
  • a further advantage is achieved by inserting the distributor strip into a receiving opening previously machined in the cylinder head cover during manufacture, since this makes it possible to use different distributor strips which are adapted to the engine type. These distribution strips have different internal volumes, each with the same outside diameter, which can be used to implement different operating conditions in the high-pressure plenum of the common rail system.
  • FIG. 1 shows a first exemplary embodiment in a simplified illustration of the fuel injection device, in which the distributor strip is integrated on one side in the wall of the cylinder head cover and
  • FIG. 2 shows a second exemplary embodiment in which the distributor strip is completely enclosed by the wall of the cylinder head cover.
  • a high-pressure fuel pump 1 is connected on the suction side via a fuel supply line 3 to a fuel-filled low-pressure chamber 5 and on the pressure side via a delivery line 7 to a high-pressure manifold formed by a distributor bar 9.
  • High-pressure lines 11 lead from the distributor bar 9 to the individual injection valves 13 projecting into the combustion chamber of the internal combustion engine to be supplied, the individual high-pressure lines 11 thus being connected to one another via the distributor bar 9 (common rail).
  • the distributor strip 9 is integrated into the wall of a cylinder head cover 23 (valve cover cover) which closes a cylinder head 21 of the internal combustion engine in such a way that it is arranged with a part completely inside the wall and with a remaining circumferential area from it Wall of the cylinder head cover 23 protrudes. It is possible to protrude outwards, as shown in FIG. 1, or to protrude into the interior of the cylinder head cover 23, depending on the space available.
  • the distributor strip 9 is completely surrounded by the wall of the cylinder head cover 23, the connections 25 of the high-pressure lines 11 also being integrated into the wall of the cylinder head cover 23 there.
  • the distributor strip 9 can have a rectangular cross section, as in the exemplary embodiments shown, but alternatively a tubular distributor strip is also possible.
  • the distributor strip 9, which is made of a high-pressure-resistant material, preferably steel, can be injected into the wall of plastic cylinder head covers 23 and cast into the wall of aluminum cylinder head covers 23.

Abstract

The system comprises a high-pressure pump (1) delivering from a low-pressure chamber (5) into a high-pressure collecting chamber. This chamber is connected by pipes (11) to injectors (13) protruding into the combustion chambers. The collecting chamber is formed by a distributor bar (9) resistant to high pressure, integral with the wall of the cylinder-head cover (23). It can be made esp. of steel, and entirely accommodated inside the cover wall, or protruding from it at one side. It can be injection-moulded inside a plastics cover, or cast in an aluminium one. The bar can be tubular, or of rectangular cross-section. <IMAGE>

Description

Stand der TechnikState of the art

Die Erfindung geht von einer Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen nach der Gattung des Patentanspruchs 1 aus. Bei derartigen bekannten Kraftstoffeinspritzeinrichtungen, fördert eine Kraftstoffhochdruckpumpe, die meist als Kolbenpumpe ausgeführt ist, Kraftstoff aus einem durch den Vorratstank gebildeten Niederdruckraum in einen Hochdrucksammelraum, der über Hochdruckleitungen mit den einzelnen, in den Brennraum der zu versorgenden Brennkraftmaschine ragenden Einspritzventilen verbunden ist, wobei dieses gemeinsame Druckspeichersystem (Common Rail) durch eine Drucksteuereinrichtung auf einem bestimmten Druck gehalten wird, so daß an den einzelnen Einspritzventilen der gewünschte Einspritzdruck über das gesamte Betriebskennfeld der Brennkraftmaschine festgelegt werden kann. Dabei weisen die bekannten Kraftstoffeinspritzeinrichtungen jedoch den Nachteil auf, daß der Hochdrucksammelraum in Form eines Rohres oder einer Verteilerleiste dort als separates Bauteil ausgeführt ist, das extern mittels zusätzlicher Haltevorrichtungen am Zylinderkopf, dessen Deckel oder dem Motorblock befestigt ist.
Dies führt jedoch neben einer Vergrößerung des benötigten Bauraumes zu einem erhöhten Fertigungs- und Montageaufwand. Zudem sind die separat angebrachten Verteilerleisten verstärkt schwingungsanfällig, was sich negativ auf die Zumeßgenauigkeit des gesamten Kraftstoffeinspritzsystems auswirken kann, so daß die bekannten Kraftstoffeinspritzeinrichtungen den heutigen Anforderungen hinsichtlich einer kostengünstigen Fertigung und einer hohen Zumeßgenauigkeit nicht entsprechen.The invention is based on a fuel injection device for internal combustion engines according to the preamble of claim 1. In such known fuel injection devices, a high-pressure fuel pump, which is usually designed as a piston pump, delivers fuel from a low-pressure space formed by the storage tank into a high-pressure collecting space, which is connected via high-pressure lines to the individual injection valves projecting into the combustion chamber of the internal combustion engine to be supplied, this common Pressure storage system (common rail) is held at a certain pressure by a pressure control device, so that the desired injection pressure can be determined over the entire operating map of the internal combustion engine at the individual injection valves. However, the known fuel injection devices have the disadvantage that the high-pressure plenum in the form of a tube or a distributor strip is designed there as a separate component, which is external by means of additional Holding devices on the cylinder head, the cover or the engine block is attached.
However, in addition to increasing the installation space required, this leads to increased production and assembly costs. In addition, the separately attached manifolds are more susceptible to vibration, which can have a negative impact on the metering accuracy of the entire fuel injection system, so that the known fuel injection devices do not meet today's requirements in terms of cost-effective production and high metering accuracy.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Kraftstoffeinspritzeinrichtung mit den kennzeichnenden Merkmalen des Patentanspruchs 1 hat demgegenüber den Vorteil, daß durch die direkte Integration der den Hochdrucksammelraum bildenden Verteilerleiste in die Wand des Zylinderkopfdeckels die Schwingungsbeschleunigungen auf die Verteilerleiste reduziert werden können, was sich insbesondere auf die Zumeßgenauigkeit der an der Verteilerleiste angeordneten Steuer- und Meßelemente sowie auf die Hochdruckleitungen auswirkt. Zudem werden dabei die einzelnen Bauteilbelastungen vermindert, so daß diese kostengünstiger und dauerhaltbarer ausgeführt werden können.
Ein weiterer Kostenvorteil wird erreicht, da nunmehr auf separate Befestigungselemente für die Verteilerleiste verzichtet werden kann. Zudem benötigt die Anordnung der Verteilerleiste der erfindungsgemäßen Kraftstoffeinspritzeinrichtung sehr wenig Motorbauraum, ist optisch ansprechender und reduziert die Kosten einer zusätzlichen Oberflächenbehandlung (z.B. Lackieren) erheblich.The fuel injection device according to the invention with the characterizing features of claim 1 has the advantage that the direct integration of the manifold forming the high-pressure manifold into the wall of the cylinder head cover, the vibration accelerations on the manifold can be reduced, which is particularly due to the metering accuracy arranged on the manifold Control and measuring elements and affects the high pressure lines. In addition, the individual component loads are reduced so that they can be carried out more cost-effectively and lastingly.
A further cost advantage is achieved since separate fastening elements for the distributor strip can now be dispensed with. In addition, the arrangement of the distributor strip of the fuel injection device according to the invention requires very little engine space, is more visually appealing and considerably reduces the costs of an additional surface treatment (for example painting).

Ein weiterer Vorteil ist der große Schutz der integrierten Verteilerleiste gegenüber einer Zerstörung bei einem Unfall des Kraftfahrzeuges und der nunmehr mögliche Notfahrbetrieb bei einem mechanischen Schaden an der Verteilerleiste (z.B. Risse). Desweiteren können die Hochdruckleitungen zu den Einspritzventilen kürzer ausgeführt bzw. bei entsprechender Gestaltung des Zylinderkopfdeckels in diesen integriert und dort befestigt werden.
Der Fertigungsaufwand der Kraftstoffeinspritzeinrichtung ist dabei durch die Möglichkeit einer Vormontage des Common Rail Moduls reduziert, wobei dabei der Zylinderkopfdeckel als Modulträger genutzt wird. Dies vereinfacht zudem die Möglichkeit von Montagefehlern, da alle spezifisch unterschiedlichen Teile (Verteilerleiste, Hochdruckleitungen, Einspritzventile usw.) bereits in einem Modul vormontiert sind.
Ein weiterer Vorteil wird insbesondere bei der Verwendung eines Aluminiumzylinderkopfdeckels erreicht, bei dem die Wärmeableitung des die Verteilerleiste durchströmenden Kraftstoffes nun über eine größere Fläche zur Umgebungsluft erfolgt, so daß der Kraftstoff in der Verteilerleiste besser gekühlt werden kann und eine maximal zulässige Kraftstofftemperatur nicht überschritten wird.
Ein weiterer Vorteil wird durch das Einschieben der Verteilerleiste in eine vorher bei der Herstellung des Zylinderkopfdeckels in diesen eingearbeitete Aufnahmeöffnung erreicht, da damit die Verwendung verschiedener, je nach Motortyp angepaßter Verteilerleisten möglich wird. Diese Verteilerleisten weisen dabei bei jeweils gleichem Außendurchmesser verschieden große Innenvolumina auf, über die sich verschiedene Betriebsbedingungen im Hochdrucksammelraum des Common Rail Systems realisieren lassen.Another advantage is the great protection of the integrated distributor strip against destruction in the event of a motor vehicle accident and the now possible emergency operation in the event of mechanical damage to the distributor strip (for example cracks). Furthermore, the high-pressure lines to the injection valves can be made shorter or, if the cylinder head cover is designed accordingly, can be integrated into it and fastened there.
The manufacturing cost of the fuel injection device is reduced by the possibility of preassembly of the common rail module, the cylinder head cover being used as a module carrier. This also simplifies the possibility of assembly errors, since all specifically different parts (manifold, high pressure lines, injection valves, etc.) are already pre-assembled in one module.
A further advantage is achieved in particular when using an aluminum cylinder head cover, in which the heat dissipation of the fuel flowing through the distributor strip is now carried out over a larger area to the ambient air, so that the fuel in the distributor strip can be cooled better and a maximum permissible fuel temperature is not exceeded.
A further advantage is achieved by inserting the distributor strip into a receiving opening previously machined in the cylinder head cover during manufacture, since this makes it possible to use different distributor strips which are adapted to the engine type. These distribution strips have different internal volumes, each with the same outside diameter, which can be used to implement different operating conditions in the high-pressure plenum of the common rail system.

Weitere Vorteile und vorteilhafte Ausgestaltungen des Gegenstandes der Erfindung sind der Beschreibung, der Zeichnung und den Ansprüchen entnehmbar.Further advantages and advantageous configurations of the subject matter of the invention can be found in the description, the drawing and the claims.

Zeichnungdrawing

Zwei Ausführungsbeispiele der erfindungsgemäßen Kraftstoffeinspritzeinrichtung sind in der Zeichnung dargestellt und werden in der nachfolgenden Beschreibung näher erläutert. Es zeigen die Figur 1 ein erstes Ausführungsbeispiel in einer vereinfachte Darstellung der Kraftstoffeinspritzeinrichtung, bei dem die Verteilerleiste einseitig vorstehend in die Wand des Zylinderkopfdeckels integriert ist und die Figur 2 ein zweites Ausführungsbeispiel, bei dem die Verteilerleiste vollständig von der Wand des Zylinderkopfdeckels umschlossen ist.Two embodiments of the fuel injection device according to the invention are shown in the drawing and are explained in more detail in the following description. FIG. 1 shows a first exemplary embodiment in a simplified illustration of the fuel injection device, in which the distributor strip is integrated on one side in the wall of the cylinder head cover and FIG. 2 shows a second exemplary embodiment in which the distributor strip is completely enclosed by the wall of the cylinder head cover.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Bei der in der Figur 1 nur mit ihren erfindungswesentlichen Bauteilen genauer dargestellten Kraftstoffeinspritzeinrichtung ist eine Kraftstoffhochdruckpumpe 1 saugseitig über eine Kraftstoffzuführungsleitung 3 mit einem kraftstoffgefüllten Niederdruckraum 5 und druckseitig über eine Förderleitung 7 mit einem durch eine Verteilerleiste 9 gebildeten Hochdrucksammelraum verbunden. Von der Verteilerleiste 9 führen Hochdruckleitungen 11 zu den einzelnen, in den Brennraum der zu versorgenden Brennkraftmaschine ragenden Einspritzventilen 13 ab, wobei die einzelnen Hochdruckleitungen 11 somit über die Verteilerleiste 9 miteinander verbunden sind (Common Rail). Zur Drucksteuerung in der Verteilerleiste 9 führt von dieser eine ein Drucksteuerventil 15 enthaltene, in den Niederdruckraum 5 mündende Rücklaufleitung 17 ab, wobei zur genauen Ermittlung des Drucks in der Verteilerleiste zudem ein Hochdrucksensor 19 in die Verteilerleiste 9 eingesetzt ist.
Dabei ist die Verteilerleiste 9 beim in der Figur 1 gezeigten ersten Ausführungsbeispiel derart in die Wand eines, einen Zylinderkopf 21 der Brennkraftmaschine verschließenden Zylinderkopfdeckels 23 (Ventildeckelhaube) integriert, daß sie mit einem Teil vollständig innerhallb der Wand angeordnet ist und mit einem verbleibenden Umfangsbereich von der Wand des Zylinderkopfdeckels 23 absteht. Dabei ist ein Abstehen nach außen, wie in der Figur 1 gezeigt, oder ein Abstehen in das Innere des Zylinderkopfdeckels 23 je nach Platzverhältnissen möglich.
Bei dem in der Figur 2 gezeigten zweiten Ausführungsbeispiel, das in seinem Aufbau dem ersten entspricht, ist die Verteilerleiste 9 vollständig von der Wand des Zylinderkopfdeckels 23 umfaßt, wobei dort auch die Anschlüsse 25 der Hochdruckleitungen 11 in die Wand des Zylinderkopfdeckels 23 integriert sind.
Die Verteilerleiste 9 kann dabei wie in den dargestellten Ausführungsbeispielen einen rechteckigen Querschnitt aufweisen, es ist aber alternativ auch eine rohrförmige Verteilerleiste möglich.
Die aus einem hochdruckbeständigen Material, vorzugsweise Stahl gefertigte Verteilerleiste 9 kann dabei bei Zylinderkopfdeckeln 23 aus Kunststoff in deren Wand eingespritzt und bei Zylinderkopfdeckeln 23 aus Aluminium in deren Wand eingegossen werden.
Es ist jedoch auch möglich, bei der Fertigung der Zylinderkopfdeckel 23 eine der Form der Verteilerleiste 9 entsprechende Aufnahmeöffnung in deren Wand vorzusehen, in die die Verteilerleiste 9 später eingeschoben werden kann.
Es ist somit durch die erfindungsgemäße Integration der Verteilerleiste in die Wand des Zylinderkopfdeckels bei einer vereinfachten Fertigung und Montage des Common Rail Systems möglich, Schwingungen insbesondere der den Hochdrucksammelraum aufnehmenden Verteilerleiste zu reduzieren.In the fuel injection device shown in more detail in FIG. 1 only with its components essential to the invention, a high-pressure fuel pump 1 is connected on the suction side via a fuel supply line 3 to a fuel-filled low-pressure chamber 5 and on the pressure side via a delivery line 7 to a high-pressure manifold formed by a distributor bar 9. High-pressure lines 11 lead from the distributor bar 9 to the individual injection valves 13 projecting into the combustion chamber of the internal combustion engine to be supplied, the individual high-pressure lines 11 thus being connected to one another via the distributor bar 9 (common rail). For pressure control in the distributor bar 9, a pressure control valve 15, which contains it, leads into the low-pressure chamber 5 outflowing return line 17, a high pressure sensor 19 is also inserted into the distribution bar 9 for accurate determination of the pressure in the manifold.
In the first exemplary embodiment shown in FIG. 1, the distributor strip 9 is integrated into the wall of a cylinder head cover 23 (valve cover cover) which closes a cylinder head 21 of the internal combustion engine in such a way that it is arranged with a part completely inside the wall and with a remaining circumferential area from it Wall of the cylinder head cover 23 protrudes. It is possible to protrude outwards, as shown in FIG. 1, or to protrude into the interior of the cylinder head cover 23, depending on the space available.
In the second exemplary embodiment shown in FIG. 2, which corresponds in structure to the first one, the distributor strip 9 is completely surrounded by the wall of the cylinder head cover 23, the connections 25 of the high-pressure lines 11 also being integrated into the wall of the cylinder head cover 23 there.
The distributor strip 9 can have a rectangular cross section, as in the exemplary embodiments shown, but alternatively a tubular distributor strip is also possible.
The distributor strip 9, which is made of a high-pressure-resistant material, preferably steel, can be injected into the wall of plastic cylinder head covers 23 and cast into the wall of aluminum cylinder head covers 23.
However, it is also possible to use one of the shape of the distributor strip 9 when manufacturing the cylinder head cover 23 provide corresponding receiving opening in the wall into which the distributor bar 9 can be inserted later.
It is thus possible through the integration of the distributor strip in accordance with the invention into the wall of the cylinder head cover with simplified manufacture and assembly of the common rail system to reduce vibrations, in particular of the distributor strip that accommodates the high-pressure plenum.

Claims (8)

Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen mit einer Kraftstoffhochdruckpumpe (1), die Kraftstoff aus einem Niederdruckraum (5) in einen Hochdrucksammelraum fördert, der über Hochdruckleitungen (11) mit in den Brennraum der zu versorgenden Brennkraftmaschine ragenden Einspritzventilen (13) verbunden ist, dadurch gekennzeichnet, daß der Hochdrucksammelraum durch eine hochdruckfeste Verteilerleiste (9) gebildet ist, die in die Wand eines an der Brennkraftmaschine angeordneten Zylinderkopfdeckels (23) integriert ist.Fuel injection device for internal combustion engines with a high-pressure fuel pump (1) which conveys fuel from a low-pressure chamber (5) to a high-pressure collection chamber, which is connected via high-pressure lines (11) to injection valves (13) projecting into the combustion chamber of the internal combustion engine to be supplied, characterized in that High-pressure plenum is formed by a high-pressure-resistant distributor bar (9) which is integrated in the wall of a cylinder head cover (23) arranged on the internal combustion engine. Kraftstoffeinspritzeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die aus einem hochdruckbeständigen Material, vorzugsweise Stahl gefertigte Verteilerleiste (9) vollständig inerhalb der Wand des Zylinderkopfdeckels (23) angeordnet ist.Fuel injection device according to Claim 1, characterized in that the distributor strip (9) made of a high-pressure-resistant material, preferably steel, is arranged entirely within the wall of the cylinder head cover (23). Kraftstoffeinspritzeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die aus einem hochdruckbeständigen Material, vorzugsweise Stahl gefertigte Verteilerleiste (9) einseitig von der Wand des Zylinderkopfdeckels (23) vorstehend in diese eingebracht ist.Fuel injection device according to Claim 1, characterized in that the distributor strip (9), which is made of a high-pressure-resistant material, preferably steel, is inserted into the cylinder head cover (23) from above on one side of the wall of the cylinder head cover. Kraftstoffeinspritzeinrichtung, nach Anspruch 2 und 3, dadurch gekennzeichnet, daß die Verteilerleiste (9) in die Wand eines aus Kunststoff bestehenden Zylinderkopfdeckels (23) eingespritzt ist.Fuel injection device according to claim 2 and 3, characterized in that the distributor strip (9) is injected into the wall of a cylinder head cover (23) made of plastic. Kraftstoffeinspritzeinrichtung, nach Anspruch 2 und 3, dadurch gekennzeichnet, daß die Verteilerleiste (9) in die Wand eines aus Aluminium bestehenden Zylinderkopfdeckels (23) eingegossen ist.Fuel injection device according to claims 2 and 3, characterized in that the distributor strip (9) is cast into the wall of an aluminum cylinder head cover (23). Kraftstoffeinspritzeinrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Verteilerleiste (9) in eine in der Wand des Zylinderkopfdeckels (23) vorgesehene Aufnahmeöffnung eingeschoben ist.Fuel injection device according to Claim 2, characterized in that the distributor strip (9) is pushed into a receiving opening provided in the wall of the cylinder head cover (23). Kraftstoffeinspritzeinrichtung, nach Anspruch 1, dadurch gekennzeichnet, daß die Verteilerleiste (9) rohrförmig ausgebildet ist.Fuel injection device according to claim 1, characterized in that the distributor strip (9) is tubular. Kraftstoffeinspritzeinrichtung, nach Anspruch 1, dadurch gekennzeichnet, daß die Verteilerleiste (9) ein rechteckiges Profil aufweist.Fuel injection device according to claim 1, characterized in that the distributor strip (9) has a rectangular profile.
EP95108103A 1994-06-27 1995-05-27 Fuel injection device for internal combustion engines Expired - Lifetime EP0690221B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9410232U 1994-06-27
DE9410232U DE9410232U1 (en) 1994-06-27 1994-06-27 Fuel injection device for internal combustion engines

Publications (2)

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EP0690221A1 true EP0690221A1 (en) 1996-01-03
EP0690221B1 EP0690221B1 (en) 1999-03-24

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US (1) US5533485A (en)
EP (1) EP0690221B1 (en)
JP (1) JPH0821340A (en)
KR (1) KR100377497B1 (en)
DE (2) DE9410232U1 (en)

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Cited By (11)

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Publication number Priority date Publication date Assignee Title
WO1998048165A1 (en) 1997-04-19 1998-10-29 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh Fuel injection system for an internal combustion engine with a common rail
DE19716513A1 (en) * 1997-04-19 1998-11-05 Mtu Friedrichshafen Gmbh Fuel injection system for an internal combustion engine with a common rail
DE19716513C2 (en) * 1997-04-19 1999-02-11 Mtu Friedrichshafen Gmbh Fuel injection system for an internal combustion engine with a common rail
US6237569B1 (en) 1997-04-19 2001-05-29 Mtu Motoren-Und Turbinen-Union Friedrichshafen Gmbh Fuel injection system for an internal combustion engine with a common rail
DE19750298A1 (en) * 1997-11-13 1999-05-20 Man Nutzfahrzeuge Ag Internal combustion motor fuel injection for diesel motors in common rail system
DE19754132A1 (en) * 1997-12-05 1999-06-10 Man Nutzfahrzeuge Ag Common rail injection system for internal combustion engines
DE19754132B4 (en) * 1997-12-05 2005-06-23 Man Nutzfahrzeuge Ag Common Rail injection system for internal combustion engines
EP1172551A2 (en) * 2000-07-11 2002-01-16 Hino Motors, Ltd. Fuel supply system of diesel engine
EP1172551A3 (en) * 2000-07-11 2004-07-14 Hino Motors, Ltd. Fuel supply system of diesel engine
EP1674711A1 (en) 2004-12-03 2006-06-28 MAN Nutzfahrzeuge Aktiengesellschaft Supercharged diesel engine with Common-Rail injection
DE102015210417A1 (en) 2015-06-08 2016-12-22 Robert Bosch Gmbh Internal combustion engine with a high-pressure fuel accumulator and method for producing an engine block for an internal combustion engine with a high-pressure fuel storage

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KR960001470A (en) 1996-01-25
KR100377497B1 (en) 2003-05-23
US5533485A (en) 1996-07-09
JPH0821340A (en) 1996-01-23
DE59505415D1 (en) 1999-04-29
DE9410232U1 (en) 1995-11-02
EP0690221B1 (en) 1999-03-24

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