EP1152146B1 - Engine assembly method and injection system - Google Patents

Engine assembly method and injection system Download PDF

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Publication number
EP1152146B1
EP1152146B1 EP01109829A EP01109829A EP1152146B1 EP 1152146 B1 EP1152146 B1 EP 1152146B1 EP 01109829 A EP01109829 A EP 01109829A EP 01109829 A EP01109829 A EP 01109829A EP 1152146 B1 EP1152146 B1 EP 1152146B1
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EP
European Patent Office
Prior art keywords
injection
pump
assembly
injection pump
engine block
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EP01109829A
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German (de)
French (fr)
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EP1152146A3 (en
EP1152146A2 (en
Inventor
Richard Edward Winsor
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Deere and Co
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Deere and Co
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Publication of EP1152146A3 publication Critical patent/EP1152146A3/en
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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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/242—Arrangement of spark plugs or injectors
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/48—Assembling; Disassembling; Replacing
    • 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 relates to a method for assembling a motor, wherein a cylinder head with at least one injection nozzle recess for receiving an injection nozzle on a Engine block with at least one injection pump recess for Recording of an injection pump is attached, and the Injector recess and the single point pump recess when the cylinder head has been attached to the engine block, at least are aligned substantially parallel, and then a Injection assembly with at least one injector, a Injection pump and an injection line for connecting the Injector with the injection pump to the cylinder block and the engine block is mounted, the injection nozzle and the Injection pump each having a longitudinal axis, which are arranged at least substantially parallel to each other.
  • EP-A-0 543 301 shows an internal combustion engine with a Injection pump element which is stiff to the Overall stiffness of the injector to increase.
  • the present invention overcomes the mentioned disadvantages, by at least the injection pump, the Connecting pipe and injector together as one integrated injection assembly before the actual installation of these assemblies in the engine block or cylinder head be pre-assembled.
  • This uniform injector assembly can be calibrated internally to a proper one Show injection behavior, and on fuel output and Leakages are tested. All injection assemblies that Have leaks or fuel output outside of a given range can be disassembled and corrected.
  • the injection assembly then becomes attached to the engine or the injection internal combustion engine, by the injector and the injection pump at the same time or at least substantially simultaneously in the cylinder head or the engine block are used.
  • the entire injection assembly without subsequent adjustments or changes are incorporated. This reduces the Installation costs, deviation in output values of the internal combustion engine as well as the probability of leaks.
  • One Another advantage is that the manufacturer of Injection pumps and nozzles within a shortened time Feedback on occurring production deviations or receives errors. This is possible because the manufacturer has the entire Injection assembly before shipping to one Engine manufacturers can test, rather than until the assembly of the individual components in an internal combustion engine or a motor to wait until then to make a statement about mistakes made to the Injection pumps or nozzles to get, if the entire Internal combustion engine has been tested.
  • a further simplification results, albeit one Cam follower, with the cam of a camshaft of the engine can interact, integrated into the injection assembly is provided. This can be with a camshaft of the engine and be connected to the injection pump such that the Injection pump as a function of the position of the camshaft is pressed.
  • each cylinder of the internal combustion engine or the engine associated with an injection pump it is also conceivable that several cylinders a common injection pump exhibit.
  • an injection assembly according to present invention and generally designated 10.
  • the injection assembly includes an injection pump 12, a Cam follower 14, an injection line 16 and an injection nozzle 18 on.
  • the nozzle axis and the pump axis are to each other aligned parallel to the injection assembly 10 to allow in an injection internal combustion engine or a Engine as described below, to be installed.
  • the injection pump 12 is a conventional pump, which has a fuel inlet 20 having.
  • the inner piston of the pump is with a radial Control arm 22 is connected, which has a pin 24 which connected to a control rod.
  • the control rod will moved by a drive controller to the pump piston turn to the amount of fuel per stroke of the Pump piston is supplied, to vary.
  • the cam follower 14 has a roller 30 which on a cam 32 at the Camshaft 34, as shown in Fig. 2, attacks. Of the Cam 32 causes an upward stroke of the Pump piston.
  • the pump outlet is connected to the injection line 16 via a Threaded coupling 36 connected.
  • the opposite end of the Injection line 16 is integral with a housing 38 of FIG Injector 18 connected.
  • the injection line 16 with the injection nozzle 18 via another Thread coupling be connected.
  • the injection nozzle 18 ends in a tip 40, the fuel into a combustion chamber supplies.
  • the injection assembly 10 is, as shown in Fig. 1, before installing the components in the engine block 52 or Cylinder head 52 assembled to a subassembly.
  • the injection assembly 10 is opened Leakages and checked for its fuel output and internally calibrated to get a correct injection control. All injection assemblies 10 with leaks or Leaks or one outside the specified range lying fuel output are disassembled and corrected.
  • the injection assembly 10 is then in a Engine mounted after the cylinder head 50 on the engine block 52 by a plurality of screws 54 in the usual way and Way was fastened.
  • the cylinder head 50 is with a Injector bore or recess 56 equipped, the Injector 18 of the injection assembly 10 receives.
  • the engine block 52 has a Injection pump bore or recess 58 on which the Injection pump 12 receives.
  • the injection pump recess 58 and the injector recess 56 are parallel to each other aligned.
  • the injection assembly 10 is in the engine or the Injection engine by a simultaneous insertion the injection pump 12 in the injection pump recess 58 and the injection nozzle 18 in the injection nozzle recess 56th assembled.
  • the injection pump 12 passes through a recess 60 in the cylinder head 50 and in the pump bore 58 of the Engine block 52.
  • a fork-shaped nozzle holder or a first Fastener 62 secures the injector 18 to the Cylinder head 50.
  • a threaded bolt 64 is in one with a Threaded recess 65 in the cylinder head 50th used.
  • a fork-shaped pump holder or a second attachment means 66 in the engine block 52 held by a threaded bolt 68 in an opening 70 to to secure the injection pump 12 to the engine block 52.
  • the second attachment means 66 engages an upper one horizontal surface 74 of the injection pump 12 at.
  • the camshaft 34 Before installing the injection assembly 10 is the Camshaft 34 in the engine block 52 via an opening 76 at an end of the engine block 52 introduced.
  • the camshaft 34 is disposed below the injection pump 12, so that the Cam follower 14 can attack her.
  • the camshaft 34 has a hump for each injection assembly of each cylinder or cam on.
  • a use of an injection assembly 10 according to the The present invention is made possible by the fact that the Injector recess 56 and the injection pump recess 58 are arranged parallel to each other, so that the one another connected injection pump 12 and the injection nozzle 18th at the same time, as an assembly, in the cylinder head 50 and the engine block 52 can be used.
  • the Injection assembly and the manufacturing or assembly process make it possible to increase the installation time and costs to reduce.
  • the injection assembly reduces Differences in fuel output and the likelihood leaks / leaks.

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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)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

A method for assembling a fuel injection IC engine has each cylinder fitted with an injector fed by an individual fuel pump. The pump, injector and connecting pipe are pre-assembled and fitted as a module, after leak checking. The fuel pump (12) is fitted with a cam follower (14) and is secured into a recess (58) in the engine block by a fastener (68). The injector (18) is secured into a recess (56) in the cylinder block by a second fastener (62). The recesses have parallel bores for a simple assembly process.

Description

Die Erfindung betrifft ein Verfahren zur Montage eines Motors, wobei ein Zylinderkopf mit wenigstens einer Einspritzdüsenaussparung zur Aufnahme einer Einspritzdüse an einem Motorblock mit wenigstens einer Einspritzpumpenaussparung zur Aufnahme einer Einspritzpumpe angebracht wird, und die Einspritzdüsenaussparung und die Einspitzpumpenaussparung, wenn der Zylinderkopf an dem Motorblock angebracht wurde, zumindest im wesentlichen parallel ausgerichtet sind, und im Anschluß ein Einspritzzusammenbau mit wenigstens einer Einspritzdüse, einer Einspritzpumpe und einer Einspritzleitung zur Verbindung der Einspritzdüse mit der Einspritzpumpe an dem Zylinderblock und dem Motorblock angebaut wird, wobei die Einspritzdüse und die Einspritzpumpe jeweils eine Längsachse aufweisen, welche zumindest im wesentlichen parallel zueinander angeordnet sind.The invention relates to a method for assembling a motor, wherein a cylinder head with at least one injection nozzle recess for receiving an injection nozzle on a Engine block with at least one injection pump recess for Recording of an injection pump is attached, and the Injector recess and the single point pump recess when the cylinder head has been attached to the engine block, at least are aligned substantially parallel, and then a Injection assembly with at least one injector, a Injection pump and an injection line for connecting the Injector with the injection pump to the cylinder block and the engine block is mounted, the injection nozzle and the Injection pump each having a longitudinal axis, which are arranged at least substantially parallel to each other.

Bekannte Antriebe bzw. Motoren weisen häufig Einspritzpumpen, Einspritzleitungen sowie Einspritzdüsen auf, welche als einzelne Bauteile an dem Motor angebaut werden. Eine solche Anordnung kann beispielsweise dem Dokument "SAE Technical Paper Series 881285 - The New B/FL 1011 A Diesel Engine Family from DEUTZ with Integrated Cooling System" entnommen werden. Toleranzunterschiede der Bauteile können zu wesentlichen Unterschieden in der Kraftstoffausgabe führen. Der Einspritzzeitpunkt wird dadurch bestimmt, daß der Motorblock vermessen wird und die Pumpenanbringung durch das Einfügen von Unterlegscheiben kalibriert wird. Wenn die Anschlüsse der Einspritzleitung fehlerhaft oder nicht ausreichend fest angezogen sind, können Kraftstoffleckagen auftreten.Known drives or engines often have injection pumps, Injection lines and injectors, which as individual components are attached to the engine. Such For example, the arrangement can be found in the document "SAE Technical Paper Series 881285 - The New B / FL 1011 Diesel Engine Family from DEUTZ with Integrated Cooling System ". Tolerance differences of the components can be substantial Lead to differences in the fuel output. Of the Injection timing is determined by the fact that the engine block is measured and the pump attachment by inserting Washers is calibrated. When the connections of the Injection line faulty or not sufficiently strong are attracted, fuel leaks may occur.

Die EP-A-0 543 301 zeigt eine Brennkraftmaschine mit einem Einspritzpumpenelement, das steif ausgebildet ist, um die Steifigkeit der Einspritzvorrichtung insgesamt zu erhöhen.EP-A-0 543 301 shows an internal combustion engine with a Injection pump element which is stiff to the Overall stiffness of the injector to increase.

Das der Erfindung zugrunde liegende Problem wird darin gesehen, daß eine Überprüfung auf Leckagen sowie eine Kalibrierung der durch die Einspritzpumpe und die Einspritzdüse gelieferten Kraftstoffmenge erst nach dem Einbau aller Bauteile in dem Motor möglich ist. Wenn Leckagen auftreten oder die Kraftstoffausgabe sich nicht innerhalb eines gewünschten Bereichs befindet, ist im wesentlichen ein Auseinanderbauen des Motors notwendig, um zur Korrektur an die Einspritzpumpe oder die Einspritzdüse heranzukommen. The problem underlying the invention is seen therein that a check for leaks and a calibration of the supplied by the injection pump and the injection nozzle Fuel quantity only after installation of all components in the Engine is possible. If leaks occur or the Fuel dispensing is not within a desired range Is essentially a disassembly of the Motors necessary to correct for the injection pump or to get the injector.

Dieses Problem wird erfindungsgemäß durch die Lehre der Patentansprüche 1 bzw. 8 gelöst, wobei in den weiteren Patentansprüchen die Lösung in vorteilhafter Weise weiterentwickelnde Merkmale aufgeführt sind.This problem is inventively achieved by the teaching of the claims 1 or 8 solved, wherein in the other claims developing the solution in an advantageous manner Characteristics are listed.

Auf diese Weise überwindet die vorliegende Erfindung die genannten Nachteile, indem wenigstens die Einspritzpumpe, die Verbindungsleitung und die Einspritzdüse zusammen als ein integrierter Einspritzzusammenbau vor dem eigentlichen Einbau dieser Baugruppen in den Motorblock bzw. Zylinderkopf vormontiert werden. Dieser einheitliche Einspritzdüsenzusammenbau kann intern kalibriert werden, um ein richtiges Einspritzverhalten zu zeigen, und auf Kraftstoffausgabe und Leckagen getestet werden. Alle Einspritzzusammenbauten, die Leckagen oder eine Kraftstoffausgabe aufweisen, die außerhalb eines vorgegebenen Bereichs liegen, können auseinandergebaut und korrigiert werden. Der Einspritzzusammenbau wird dann an dem Motor bzw. der Einspritzbrennkraftmaschine angebracht, indem die Einspritzdüse und die Einspritzpumpe gleichzeitig bzw. zumindest im wesentlichen gleichzeitig in den Zylinderkopf bzw. den Motorblock eingesetzt werden.In this way, the present invention overcomes the mentioned disadvantages, by at least the injection pump, the Connecting pipe and injector together as one integrated injection assembly before the actual installation of these assemblies in the engine block or cylinder head be pre-assembled. This uniform injector assembly can be calibrated internally to a proper one Show injection behavior, and on fuel output and Leakages are tested. All injection assemblies that Have leaks or fuel output outside of a given range can be disassembled and corrected. The injection assembly then becomes attached to the engine or the injection internal combustion engine, by the injector and the injection pump at the same time or at least substantially simultaneously in the cylinder head or the engine block are used.

Die gleichzeitige Installation der Einspritzdüse und der Einspritzpumpe als eine Einheit wird begünstigt, wenn die Aussparungen zur Aufnahme der Einspritzpumpe und der Einspritzdüse zumindest im wesentlichen parallel zueinander angeordnet sind. Auf diese Weise wird einem Verhaken bzw. Verklemmen der einzelnen Baugruppen, insbesondere bei einer zumindest im wesentlichen starren Verbindung der Einspritzpumpe mit der Einspritzdüse entgegengewirkt.Simultaneous installation of the injector and the Injection pump as a unit is favored when the Recesses for receiving the injection pump and the Injection nozzle at least substantially parallel to each other are arranged. In this way, a snag or Jamming of the individual modules, especially in one at least substantially rigid connection of the injection pump Counteracted with the injection nozzle.

Durch das Bereitstellen einer vormontierten Einheit kann der gesamte Einspritzzusammenbau ohne nachfolgende Einstellungen bzw. Veränderungen eingebaut werden. Dies reduziert die Montagekosten, Abweichung in Ausgabewerten der Brennkraftmaschine sowie die Wahrscheinlichkeit von Leckagen. Ein weiterer Vorteil besteht darin, daß der Hersteller der Einspritzpumpen und -düsen innerhalb einer verkürzten Zeit eine Rückmeldung über auftretende Herstellungsabweichungen bzw. - fehler erhält. Dies ist möglich, da der Hersteller den gesamten Einspritzzusammenbau vor dem Versenden an einen Motorenhersteller testen kann, anstatt bis zur Montage der einzelnen Bauteile in eine Brennkraftmaschine bzw. einen Motor zu warten, um erst dann eine Aussage über Fehler an den Einspritzpumpen bzw. -düsen zu erhalten, wenn die gesamte Brennkraftmaschine getestet worden ist.By providing a preassembled unit, the entire injection assembly without subsequent adjustments or changes are incorporated. This reduces the Installation costs, deviation in output values of the internal combustion engine as well as the probability of leaks. One Another advantage is that the manufacturer of Injection pumps and nozzles within a shortened time Feedback on occurring production deviations or receives errors. This is possible because the manufacturer has the entire Injection assembly before shipping to one Engine manufacturers can test, rather than until the assembly of the individual components in an internal combustion engine or a motor to wait until then to make a statement about mistakes made to the Injection pumps or nozzles to get, if the entire Internal combustion engine has been tested.

Eine weitere Vereinfachung ergibt sich, wenn auch ein Nockenfolger, der mit dem Nocken einer Nockenwelle des Motors zusammenwirken kann, in den Einspritzzusammenbau integriert vorgesehen ist. Dieser kann mit einer Nockenwelle des Motors sowie mit der Einspritzpumpe derart verbunden sein, daß die Einspritzpumpe in Abhängigkeit von der Stellung der Nockenwelle betätigt wird.A further simplification results, albeit one Cam follower, with the cam of a camshaft of the engine can interact, integrated into the injection assembly is provided. This can be with a camshaft of the engine and be connected to the injection pump such that the Injection pump as a function of the position of the camshaft is pressed.

Üblicherweise ist jedem Zylinder der Brennkraftmaschine bzw. des Motors eine Einspritzpumpe zugeordnet; es ist aber auch denkbar, daß mehrere Zylinder eine gemeinsame Einspritzpumpe aufweisen.Usually, each cylinder of the internal combustion engine or the engine associated with an injection pump; It is also conceivable that several cylinders a common injection pump exhibit.

In der Zeichnung ist ein nachfolgend näher beschriebenes Ausführungsbeispiel der Erfindung dargestellt. Es zeigt:

Fig. 1
eine Seitenansicht eines Einspritzzusammenbaus und
Fig. 2
eine Explosionsdarstellung eines Motorblocks, eines Zylinderkopfs und eines Einspritzzusammenbaus.
In the drawing, an embodiment of the invention described in more detail below is shown. It shows:
Fig. 1
a side view of an injection assembly and
Fig. 2
an exploded view of an engine block, a cylinder head and an injection assembly.

In Fig. 1 wird ein Einspritzzusammenbau entsprechend der vorliegenden Erfindung gezeigt und allgemein mit 10 bezeichnet. Der Einspritzzusammenbau weist eine Einspritzpumpe 12, einen Nockenfolger 14, eine Einspritzleitung 16 und eine Einspritzdüse 18 auf. Die Düsenachse und die Pumpenachse sind zueinander parallel ausgerichtet, um es dem Einspritzzusammenbau 10 zu ermöglichen, in einer Einspritzbrennkraftmaschine bzw. einem Motor wie unten beschrieben, eingebaut zu werden.In Fig. 1, an injection assembly according to present invention and generally designated 10. The injection assembly includes an injection pump 12, a Cam follower 14, an injection line 16 and an injection nozzle 18 on. The nozzle axis and the pump axis are to each other aligned parallel to the injection assembly 10 to allow in an injection internal combustion engine or a Engine as described below, to be installed.

Bei der Einspritzpumpe 12 handelt es sich um eine konventionelle Pumpe, welche einen Kraftstoffeinlaß 20 aufweist. Der innere Kolben der Pumpe ist mit einem radialen Steuerarm 22 verbunden, welcher einen Stift 24 aufweist, der mit einer Steuerstange verbunden ist. Die Steuerstange wird durch einen Antriebsregler bewegt, um den Pumpenkolben zu drehen, um die Menge an Kraftstoff, die pro Hub des Pumpenkolbens geliefert wird, zu variieren. Der Nockenfolger 14 weist eine Rolle 30 auf, die an einem Nocken 32 an der Nockenwelle 34, wie sie in Fig. 2 gezeigt wird, angreift. Der Nocken 32 bewirkt einen nach oben gerichteten Hub des Pumpenkolbens.In the injection pump 12 is a conventional pump, which has a fuel inlet 20 having. The inner piston of the pump is with a radial Control arm 22 is connected, which has a pin 24 which connected to a control rod. The control rod will moved by a drive controller to the pump piston turn to the amount of fuel per stroke of the Pump piston is supplied, to vary. The cam follower 14 has a roller 30 which on a cam 32 at the Camshaft 34, as shown in Fig. 2, attacks. Of the Cam 32 causes an upward stroke of the Pump piston.

Der Pumpenausgang ist mit der Einspritzleitung 16 über eine Gewindekupplung 36 verbunden. Das gegenüberliegende Ende der Einspritzleitung 16 ist integral mit einem Gehäuse 38 der Einspritzdüse 18 verbunden. Alternativ kann die Einspritzleitung 16 mit der Einspritzdüse 18 über eine weitere Gewindekupplung verbunden sein. Die Einspritzdüse 18 endet in einer Spitze 40, die Kraftstoff in eine Verbrennungskammer liefert.The pump outlet is connected to the injection line 16 via a Threaded coupling 36 connected. The opposite end of the Injection line 16 is integral with a housing 38 of FIG Injector 18 connected. Alternatively, the injection line 16 with the injection nozzle 18 via another Thread coupling be connected. The injection nozzle 18 ends in a tip 40, the fuel into a combustion chamber supplies.

Der Einspritzzusammenbau 10 wird, wie in Fig. 1 dargestellt, vor dem Einbauen der Bauteile in den Motorblock 52 oder Zylinderkopf 52 zu einem Unterzusammenbau zusammenmontiert. The injection assembly 10 is, as shown in Fig. 1, before installing the components in the engine block 52 or Cylinder head 52 assembled to a subassembly.

Einmal zusammengebaut, wird der Einspritzzusammenbau 10 auf Leckagen und auf seine Kraftstoffausgabe geprüft und intern kalibriert, um eine korrekte Einspritzsteuerung zu erhalten. Alle Einspritzzusammenbauten 10 mit Leckagen bzw. Undichtigkeiten oder einer außerhalb des vorgegebenen Bereichs liegenden Kraftstoffausgabe werden auseinandergebaut und korrigiert. Der Einspritzzusammenbau 10 wird danach in einen Motor montiert, nachdem der Zylinderkopf 50 auf dem Motorblock 52 durch eine Mehrzahl von Schrauben 54 in üblicher Art und Weise befestigt wurde. Der Zylinderkopf 50 ist mit einer Einspritzdüsenbohrung bzw. -aussparung 56 ausgestattet, die die Einspritzdüse 18 des Einspritzzusammenbaus 10 aufnimmt. In ähnlicher Weise weist der Motorblock 52 eine Einspritzpumpenbohrung bzw. -aussparung 58 auf, welche die Einspritzpumpe 12 aufnimmt. Die Einspritzpumpenaussparung 58 und die Einspritzdüsenaussparung 56 sind parallel zueinander ausgerichtet.Once assembled, the injection assembly 10 is opened Leakages and checked for its fuel output and internally calibrated to get a correct injection control. All injection assemblies 10 with leaks or Leaks or one outside the specified range lying fuel output are disassembled and corrected. The injection assembly 10 is then in a Engine mounted after the cylinder head 50 on the engine block 52 by a plurality of screws 54 in the usual way and Way was fastened. The cylinder head 50 is with a Injector bore or recess 56 equipped, the Injector 18 of the injection assembly 10 receives. In Similarly, the engine block 52 has a Injection pump bore or recess 58 on which the Injection pump 12 receives. The injection pump recess 58 and the injector recess 56 are parallel to each other aligned.

Der Einspritzzusammenbau 10 wird in dem Motor bzw. der Einspritzbrennkraftmaschine durch ein gleichzeitiges Einsetzen der Einspritzpumpe 12 in die Einspritzpumpenaussparung 58 und der Einspritzdüse 18 in die Einspritzdüsenaussparung 56 montiert. Die Einspritzpumpe 12 gelangt durch eine Aussparung 60 in den Zylinderkopf 50 und in die Pumpenbohrung 58 des Motorblocks 52.The injection assembly 10 is in the engine or the Injection engine by a simultaneous insertion the injection pump 12 in the injection pump recess 58 and the injection nozzle 18 in the injection nozzle recess 56th assembled. The injection pump 12 passes through a recess 60 in the cylinder head 50 and in the pump bore 58 of the Engine block 52.

Ein gabelförmiger Düsenhalter bzw. ein erstes Befestigungsmittel 62 sichert die Einspritzdüse 18 an dem Zylinderkopf 50. Ein Gewindebolzen 64 ist in eine mit einem Gewinde versehene Aussparung 65 in dem Zylinderkopf 50 eingesetzt. Entsprechend wird ein gabelförmiger Pumpenhalter bzw. ein zweites Befestigungsmittel 66 in dem Motorblock 52 durch einen Gewindebolzen 68 in einer Öffnung 70 gehalten, um die Einspritzpumpe 12 an dem Motorblock 52 zu sichern. Das zweite Befestigungsmittel 66 greift an einer oberen horizontalen Oberfläche 74 der Einspritzpumpe 12 an.A fork-shaped nozzle holder or a first Fastener 62 secures the injector 18 to the Cylinder head 50. A threaded bolt 64 is in one with a Threaded recess 65 in the cylinder head 50th used. Accordingly, a fork-shaped pump holder or a second attachment means 66 in the engine block 52 held by a threaded bolt 68 in an opening 70 to to secure the injection pump 12 to the engine block 52. The second attachment means 66 engages an upper one horizontal surface 74 of the injection pump 12 at.

Vor dem Einbau des Einspritzzusammenbaus 10 wird die Nockenwelle 34 in den Motorblock 52 über eine Öffnung 76 an einem Ende des Motorblocks 52 eingebracht. Die Nockenwelle 34 ist unterhalb der Einspritzpumpe 12 angeordnet, damit der Nockenfolger 14 an ihr angreifen kann. Die Nockenwelle 34 weist für jeden Einspritzzusammenbau jedes Zylinders einen Höcker bzw. Nocken auf.Before installing the injection assembly 10 is the Camshaft 34 in the engine block 52 via an opening 76 at an end of the engine block 52 introduced. The camshaft 34 is disposed below the injection pump 12, so that the Cam follower 14 can attack her. The camshaft 34 has a hump for each injection assembly of each cylinder or cam on.

Eine Verwendung eines Einspritzzusammenbaus 10 entsprechend der vorliegenden Erfindung wird dadurch möglich, daß die Einspritzdüsenaussparung 56 und die Einspritzpumpenaussparung 58 zueinander parallel angeordnet sind, so daß die miteinander verbundene Einspritzpumpe 12 und die Einspritzdüse 18 gleichzeitig, als ein Zusammenbau, in den Zylinderkopf 50 und den Motorblock 52 eingesetzt werden können. Der Einspritzzusammenbau und das Herstellungs- bzw. Montageverfahren machen es möglich, die Montagedauer und -kosten zu reduzieren. Darüber hinaus reduziert der Einspritzzusammenbau Unterschiede in der Kraftstoffausgabe und die Wahrscheinlichkeit von Leckagen/Undichtigkeiten.A use of an injection assembly 10 according to the The present invention is made possible by the fact that the Injector recess 56 and the injection pump recess 58 are arranged parallel to each other, so that the one another connected injection pump 12 and the injection nozzle 18th at the same time, as an assembly, in the cylinder head 50 and the engine block 52 can be used. Of the Injection assembly and the manufacturing or assembly process make it possible to increase the installation time and costs to reduce. In addition, the injection assembly reduces Differences in fuel output and the likelihood leaks / leaks.

Die Erfindung soll nicht durch die vorstehende Ausführungsform, sondern nur durch die folgenden Ansprüche begrenzt werden.The invention should not be limited by the above embodiment, but only be limited by the following claims.

Claims (8)

  1. A method of assembling an engine, wherein a cylinder head (50) with at least one injection nozzle opening (56) for reception of an injection nozzle (18) is fitted on an engine block (52) with at least one injection pump opening (58) for reception of an injection pump (12), and wherein the injection nozzle opening (56) and the injection pump opening (58) are at least substantially parallel when the cylinder head (50) has been fitted on the engine block (52), and subsequently an injection assembly (10) with at least one injection nozzle (18), an injection pump (12) and a injection line (16) for connecting the injection nozzle (18) to the injection pump (12) is fitted on the cylinder block (50) and the engine block (52), wherein the injection nozzle (18) and the injection pump (12) have respective longitudinal axes which are arranged at least substantially parallel to one another, characterized in that at least the injection pump (12), the injection line (16) and the injection nozzle (18) are fitted together as a pre-assembled injection assembly (10) at least substantially simultaneously in the corresponding openings (56, 58).
  2. A method according to claim 1, wherein the injection assembly (10) comprises a cam follower (14).
  3. A method according to claim 1 or 2, wherein the injection nozzle (18) is fixed on the cylinder head (50) by means of a first fixing means (62) and/or the injection pump (12) is fixed on the engine block (52) by means of a second fixing means (66).
  4. A method according to claim 3, characterized in that the first and second fixing means (62, 66) are retained by threaded bolts (64, 68) in openings (65, 70) which are disposed in the cylinder head (50) and the engine block (52) respectively parallel to the injection nozzle opening (56) and the injection pump opening (58).
  5. A method according to one or more of the preceding claims, characterized in that the injection assembly (10) is tested for leaks before fitting.
  6. A method according to one or more of the preceding claims, characterized in that the injection assembly (10) is calibrated before fitting, especially to attain a desired fuel delivery.
  7. A method according to one or more of the preceding claims, characterized in that a camshaft (34) is fitted in the engine block (52) before fitting the injection assembly (10).
  8. An injection assembly (10) with an injection pump (12), an injection nozzle (18) and at least one injection line (16), especially adapted for use in a method according to one or more of the preceding claims, wherein the injection nozzle (18) and the injection pump (12) have respective longitudinal axes which are arranged at least substantially parallel.
EP01109829A 2000-05-03 2001-04-21 Engine assembly method and injection system Expired - Lifetime EP1152146B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US563691 2000-05-03
US09/563,691 US6321724B1 (en) 2000-05-03 2000-05-03 Engine with integrated unit pump injector and method of making the same

Publications (3)

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EP1152146A2 EP1152146A2 (en) 2001-11-07
EP1152146A3 EP1152146A3 (en) 2004-01-28
EP1152146B1 true EP1152146B1 (en) 2005-08-31

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US (1) US6321724B1 (en)
EP (1) EP1152146B1 (en)
JP (1) JP2001355532A (en)
AT (1) ATE303510T1 (en)
AU (1) AU775218B2 (en)
BR (1) BR0101666A (en)
CA (1) CA2342821C (en)
DE (1) DE50107247D1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007040265A (en) * 2005-08-05 2007-02-15 Denso Corp Fuel injection device manufacturing method
US20080230036A1 (en) * 2007-03-23 2008-09-25 Bauman William D Roller actuator for a mechanical fuel pump
US7568461B1 (en) * 2008-06-20 2009-08-04 Gm Global Technology Operations, Inc. Tappet roller end shape for improved lubrication and combination with fuel pump and engine
GB2534397A (en) * 2015-01-22 2016-07-27 Gm Global Tech Operations Unit pump for use in a combustion engine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1991586A (en) * 1933-12-21 1935-02-19 Continental Motors Corp Engine
DE4138290A1 (en) * 1991-11-21 1993-05-27 Kloeckner Humboldt Deutz Ag INTERNAL COMBUSTION ENGINE
DE4212255C2 (en) * 1992-04-11 1996-12-19 Daimler Benz Ag Arrangement of a fuel injection device on the housing of an internal combustion engine
US6745465B1 (en) * 1994-05-11 2004-06-08 Caterpillar Inc Method for assembling an apparatus, such as a fuel injector, using select fit of dimensional control features
DE19600565C1 (en) * 1996-01-09 1997-08-21 Daimler Benz Ag Fuel guidance in the cylinder housing of an internal combustion engine
US6026786A (en) * 1997-07-18 2000-02-22 Caterpillar Inc. Method and apparatus for controlling a fuel injector assembly of an internal combustion engine
US6439204B1 (en) * 1999-08-19 2002-08-27 Stanadyne Corporation Timing advance piston for unit pump or unit injector and method thereof

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EP1152146A3 (en) 2004-01-28
EP1152146A2 (en) 2001-11-07
US6321724B1 (en) 2001-11-27
AU3897401A (en) 2001-11-08
JP2001355532A (en) 2001-12-26
DE50107247D1 (en) 2005-10-06
CA2342821A1 (en) 2001-11-03
AU775218B2 (en) 2004-07-22
ATE303510T1 (en) 2005-09-15
BR0101666A (en) 2001-12-26
CA2342821C (en) 2004-10-12

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