EP0369151B1 - Monobloc injection pump and nozzle and fastening device - Google Patents
Monobloc injection pump and nozzle and fastening device Download PDFInfo
- Publication number
- EP0369151B1 EP0369151B1 EP89118437A EP89118437A EP0369151B1 EP 0369151 B1 EP0369151 B1 EP 0369151B1 EP 89118437 A EP89118437 A EP 89118437A EP 89118437 A EP89118437 A EP 89118437A EP 0369151 B1 EP0369151 B1 EP 0369151B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- clamping
- housing
- cylinder head
- head
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- 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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Definitions
- the present invention relates to an arrangement for fastening a series of pump nozzles to the cylinder head of an internal combustion engine, in which each pump nozzle has a pump housing which is pressed into a stepped bore of a cylinder head by means of clamping screws, and a head housing containing actuators which is sealingly connected to the pump housing and has projections on two opposite sides.
- the invention relates to high-pressure injection nozzles with electrically or hydraulically actuated actuators for quantity and / or spray adjustment, which are enclosed in a pressure-tight manner by a head housing and their fastening.
- the position of the holes in the flange must be specified for each engine type according to the specific circumstances, whereby a variety of different designs of a pump nozzle must be kept in stock and many holes must be machined in the cylinder head, which weaken the structure.
- EP-A-0 057 674 discloses the attachment of a fuel injection pump to the cylinder head of an internal combustion engine, in which each pump nozzle has a pump housing which is pressed sealingly into a stepped bore of a cylinder head by means of tensioning screws, and a head housing containing actuators which is sealingly connected to the pump housing (in one piece in the present case) and has projections on two opposite sides.
- the solution according to the invention ensures indirect fastening of a whole series of pump nozzles, this type of fastening leaving sufficient scope to be able to use a single type of pump nozzle for a large number of motor types.
- This advantage which affects the installation and removal of the pump nozzles, is further supplemented by the fact that the connection between the pump nozzle and the cylinder head is so elastic that deformations and breaks are largely avoided.
- the end parts of the clamping bracket are preferably spherical and a spherical support for the attack of the clamping screw is arranged in the middle of the clamping bracket.
- FIG. 1 shows a longitudinal section through the cylinder head wall
- FIG. 2 shows a greatly simplified plan view of FIG. 1
- FIG. 3 shows an arrangement of the same components with a larger cylinder spacing.
- a pump nozzle (2) in section and a pump nozzle (3) are shown in view in a cylinder head wall (1). Both are driven by a camshaft, not shown, via thrust pieces (4) from the engine.
- the pump nozzles (2, 3) are surrounded by a pump housing (5) which is inserted in a stepped bore (6) in the cylinder head wall (1). Seals and fuel supply and discharge to and from the pump nozzle are not shown for the sake of simplicity.
- the pump housing (5) contains a pump piston liner (7) in which a piston (8) works.
- the pump housing (5) is sealed off at the top by a head housing (13) which contains an electromagnetic drive (14) for the actuator (15) which, for example, causes the pump piston (8) to rotate.
- the inside of the pump housing (5) and head housing (13) is completely filled with fuel.
- the working movement of the guide sleeve (9) prevails in the annular space (10) a pulsating pressure that can reach 25 bar. This propagates through the electromagnetic drive (14) into the head space (12). This creates a pulsating force there that tries to lift the head housing (13) from the pump housing (5).
- the head housing (13) has projections (20) on opposite sides with horizontal engagement surfaces (21) for the clamping bracket (22).
- the clamping bracket (22) have spherical end parts (23) which rest on the contact surfaces (21).
- a expansion screw (24) engages via a spherical washer (26), which ensures that the pump nozzle (2, 3) is clamped down on the cylinder head wall (1).
- Fig. 2 it can be seen that the clamping bracket (22) are inclined at an angle (25) with respect to the direction of the motor axis (27). Where the clamping brackets (22) engage on the attack surface (21) is not critical. This makes it possible to use identical pump nozzles (2, 3) and clamping brackets (22) according to FIG. 3 even with a larger cylinder spacing (28), a different angle (25) resulting which can also be 0 °. With even larger cylinder distances, longer clamping brackets (22) can of course also be used.
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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)
- Jet Pumps And Other Pumps (AREA)
- Nozzles (AREA)
- Fertilizing (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Anordnung zur Befestigung einer Reihe von Pumpedüsen am Zylinderkopf einer Brennkraftmaschine, bei welcher jede Pumpedüse ein Pumpengehäuse aufweist, das mittels Spannschrauben dichtend in eine Stufenbohrung eines Zylinderkopfes gedrückt wird, und ein Stellglieder enthaltendes Kopfgehäuse, das mit dem Pumpengehäuse dichtend verbunden ist und an zwei gegenüberliegenden Seiten Vorsprünge aufweist. Insbesondere handelt die Erfindung von Hochdruckeinspritzdüsen mit elektrisch oder hydraulisch betätigten Stellgliedern für Mengen- und/oder Spritzverstellung, die von einem Kopfgehäuse druckdicht umschlossen werden und deren Befestigung.The present invention relates to an arrangement for fastening a series of pump nozzles to the cylinder head of an internal combustion engine, in which each pump nozzle has a pump housing which is pressed into a stepped bore of a cylinder head by means of clamping screws, and a head housing containing actuators which is sealingly connected to the pump housing and has projections on two opposite sides. In particular, the invention relates to high-pressure injection nozzles with electrically or hydraulically actuated actuators for quantity and / or spray adjustment, which are enclosed in a pressure-tight manner by a head housing and their fastening.
Aus der AT-PS 372 502 ist es bekannt, das Gehäuse mit einem Flansch oder an gegenüberliegenden Seiten angebrachten Ohren zu versehen, die mittels Schrauben auf den Zylinderkopf niedergespannt werden.From AT-PS 372 502 it is known to provide the housing with a flange or ears attached on opposite sides, which are clamped onto the cylinder head by means of screws.
Diese Befestigungsart ist nachteilig, weil die in geringem Abstand von der Pumpedüsen-Längsachse am Pumpengehäuse angreifenden kurzen Zugschrauben eine starre Verbindung darstellen, die elastische Dehnungen nicht zuläßt. Dadurch, daß auf die Pumpedüse die pulsierenden Gaskräfte im Brennraum und die Erschütterungen des Motors wirken und daß beim geringsten Passungsfehler oder bei ungleichmäßigem Anziehen der Schrauben und durch das über die Ohren eingeleitete Biegemoment Spannungen entstehen, können am Pumpengehäuse Deformationen und Brüche auftreten. Diese Deformationen wirken sich auch negativ auf die sehr enge Passung zwischen Pumpenkolben und Pumpenkolbenbüchse aus.This type of fastening is disadvantageous because the short tension screws acting on the pump housing at a short distance from the longitudinal axis of the pump nozzle represent a rigid connection which does not permit elastic expansion. Due to the fact that the pulsating gas forces in the combustion chamber and the vibrations of the engine act on the pump nozzle and that tensions occur at the slightest misalignment or when the screws are tightened unevenly and due to the bending moment introduced through the ears, deformations and breaks can occur on the pump housing. These deformations also have a negative effect on the very tight fit between the pump piston and the pump piston liner.
Außerdem muß die Lage der Bohrungen im Flansch für jeden Motortyp entsprechend den spezifischen Gegebenenheiten besonders festgelegt werden, wodurch eine Vielzahl von verschiedenen Ausführungen einer Pumpedüse auf Lager gehalten und in den Zylinderkopf viele Bohrungen eingearbeitet werden müssen, die diesen strukturell schwächen.In addition, the position of the holes in the flange must be specified for each engine type according to the specific circumstances, whereby a variety of different designs of a pump nozzle must be kept in stock and many holes must be machined in the cylinder head, which weaken the structure.
Will man eine derartige Befestigung insbesondere bei Pumpedüsen mit einem dichtend aufgeschraubten Kopfgehäuse anwenden, in dessen Innerem sich Stellorgane und Flüssigkeit unter pulsierendem Druck (Druckspitzen bis 25 bar werden erreicht) befinden, ergibt sich eine weitere Schwierigkeit: Die Verformungen des Pumpengehäuses beim Niederspannen führen zur Undichtigkeit der Verbindung zwischen Pumpengehäuse und Kopfgehäuse, welches deshalb sehr stark ausgeführt werden muß, was die - immer kritischen - Einbaumaße der Pumpedüse vergrößert. Der pulsierende Druck im Inneren des Kopfgehäuses stellt eine weitere Belastung dar, der konstruktiv Rechnung zu tragen ist.If you want to use this type of attachment, in particular for pump nozzles with a sealingly screwed-on head housing, inside which there are actuators and liquid under pulsating pressure (pressure peaks of up to 25 bar are reached), another difficulty arises: The deformations of the pump housing during low-voltage lead to leakage the connection between the pump housing and the head housing, which must therefore be made very strong, which increases the - always critical - installation dimensions of the pump nozzle. The pulsating pressure inside the head housing represents a further burden that has to be taken into account in the design.
Aus der GB-A-2 072 744 ist eine Befestigung einer Reihe von Pumpedüsen am Zylinderkopf einer Brennkraftmaschine bekannt, bei der eine Spannschraube zentral für zwei benachbarte Einspritzdüsen vorgesehen ist, die einen Spannbügel auf die Pumpengehäuse niederspannt. Hierbei werden die jeweils zwei benachbarten Einspritzdüsen von jenem Spannbügel ganz umgriffen.From GB-A-2 072 744 a fastening of a number of pump nozzles to the cylinder head of an internal combustion engine is known, in which a clamping screw is provided centrally for two adjacent injection nozzles, which clamps a clamping bracket onto the pump housing. In this case, the two adjacent injection nozzles are completely gripped by that clamping bracket.
Der Nachteil dieser bekannten Befestigungsart liegt zum einen darin, daß sie eine ziemlich starre Verbindung zwischen dem Zylinderkopf der Brennkraftmaschine und den Pumpedüsen herstellt. Zum anderen besteht bei dieser Befestigungsart insbesondere die Gefahr des Verkantens der benachbarten Düsen nach innen aufeinander zu, da die dortigen Spannbügel die Tendenz haben, beim Spannen in Richtung auf ihre Seitenränder in zunehmendem Maße entgegen der Spannrichtung nach oben wegzubiegen, weshalb im Bereich der Seitenränder die Spannkraft der Spannschrauben nur in stark reduziertem Maße wirken wird.The disadvantage of this known type of fastening is on the one hand that it creates a rather rigid connection between the cylinder head of the internal combustion engine and the pump nozzles. On the other hand, with this type of fastening there is in particular the risk of the neighboring nozzles tilting towards one another, since the clamping brackets there tend to bend upwards in the direction of their side edges, increasingly against the clamping direction, which is why in the region of the side edges The clamping force of the clamping screws will only act to a greatly reduced extent.
Ferner offenbart die EP-A-0 057 674 die Befestigung einer Kraftstoffeinspritzpumpe am Zylinderkopf einer Brennkraftmaschine, bei welcher jede Pumpedüse ein Pumpengehäuse aufweist, das mittels Spannschrauben dichtend in eine Stufenbohrung eines Zylinderkopfes gedrückt wird, und ein Stellglieder enthaltendes Kopfgehäuse, das mit dem Pumpengehäuse (im vorliegenden Falle einstückig) dichtend verbunden ist und an zwei gegenüberliegenden Seiten Vorsprünge aufweist.Furthermore, EP-A-0 057 674 discloses the attachment of a fuel injection pump to the cylinder head of an internal combustion engine, in which each pump nozzle has a pump housing which is pressed sealingly into a stepped bore of a cylinder head by means of tensioning screws, and a head housing containing actuators which is sealingly connected to the pump housing (in one piece in the present case) and has projections on two opposite sides.
Die Nachteile dieser Befestigungsart liegen insbesondere darin, daß die Verbindung zwischen der Kraftstoffeinspritzpumpe und dem Zylinderkopf aufgrund des geringen Parallelabstandes der Spannschrauben von der Pumpen-Längsachse zu starr ist, so daß elastische Dehnungen von dieser Verbindung nicht zugelassen werden. Insoweit zeigt diese Befestigungsart die gleichen Nachteile auf, wie vorstehend bezüglich der aus der AT-PS 375 502 bekannten Befestigungsart ausgeführt.The disadvantages of this type of fastening are in particular that the connection between the fuel injection pump and the cylinder head is too rigid due to the small parallel spacing of the clamping screws from the longitudinal axis of the pump, so that elastic expansions of this connection are not permitted. In this respect, this type of fastening shows the same disadvantages as stated above with regard to the type of fastening known from AT-PS 375 502.
Ein weiterer wesentlicher Nachteil jener bekannten Befestigungsart besteht darin, daß die Lage der Bohrungen zur Befestigung der Pumpedüse bzw. der Kraftstoffeinspritzpumpe für jeden Motortyp entsprechend den spezifischen Gegebenheiten besonders festgelegt werden müssen. Deshalb muß eine Vielzahl von verschiedenen Ausführungen von Pumpedüsen auf Lager gehalten und andererseits in den Zylinderkopf viele Bohrungen eingearbeitet werden, wodurch beide Teile strukturell geschwächt werden.Another major disadvantage of that known type of fastening is that the position of the holes for fastening the pump nozzle or the fuel injection pump for each engine type must be specifically determined according to the specific circumstances. Therefore, a large number of different designs of pump nozzles must be kept in stock and, on the other hand, many holes must be machined in the cylinder head, as a result of which both parts are structurally weakened.
Schließlich ist es bei der aus der EP-A-0 057 674 bekannten Befestigungsart von großem Nachteil, daß es durch die direkte Befestigung der Pumpedüse nicht möglich ist, verschiedene Abstände der Pumpedüsen untereinander beim Einbau zu realisieren, da die Bohrungen in den Vorsprüngen der Pumpedüse einerseits und die Bohrungen am Zylinderkopf andererseits immer fluchten müssen, und somit keinerlei Spielraum beim Einbau gegeben ist.Finally, it is a great disadvantage of the type of fastening known from EP-A-0 057 674 that the direct fastening of the pump nozzle means that it is not possible to realize different distances between the pump nozzles during installation, since the bores in the projections of the pump nozzle on the one hand and the bores on the cylinder head on the other hand must always be aligned, so there is no scope for installation.
Als Aufgabe der vorliegenden Erfindung wurde es angesehen, eine Befestigung einer Reihe von Pumpedüsen der eingangs genannten Art anzugeben, mit der die vorstehend genannten Nachteile vermieden werden.It was considered an object of the present invention to provide a fastening of a number of pump nozzles of the type mentioned at the beginning, with which the disadvantages mentioned above are avoided.
Diese Aufgabe wird bei einer Anordnung zur Befestigung einer Reihe von Pumpedüsen am Zylinderkopf einer Brennkraftmaschine der eingangs genannten Art erfindungsgemäß dadurch gelöst, daß nur auf den einander zugewandten Vorsprüngen zweier benachbarter Pumpedüsen jeweils ein Endteil eines gemeinsamen Spannbügels aufliegt, der durch eine Spannschraube abwärts gezogen ist, und daß jeder Spannbügel mit der Richtung der Motorlängsachse einen Winkel einschließt.This object is achieved according to the invention in an arrangement for fastening a number of pump nozzles to the cylinder head of an internal combustion engine of the type mentioned at the outset in that only one end part of a common clamping bracket, which is pulled down by a clamping screw, rests on the mutually facing projections of two adjacent pump nozzles. and that each clamping bracket forms an angle with the direction of the motor longitudinal axis.
Die erfindungsgemäße Lösung gewährleistet eine indirekte Befestigung einer ganzen Reihe von Pumpedüsen, wobei diese Befestigungsart ausreichend Spielraum läßt, um einen einzigen Pumpedüsentyp für eine Vielzahl von Motortypen verwenden zu können. Dieser sich beim Ein- und Ausbau der Pumpedüsen auswirkende Vorteil wird ferner dadurch ergänzt, daß die Verbindung Pumpedüse-Zylinderkopf derart elastisch ist, daß Deformationen und Brüche weitestgehend vermieden werden.The solution according to the invention ensures indirect fastening of a whole series of pump nozzles, this type of fastening leaving sufficient scope to be able to use a single type of pump nozzle for a large number of motor types. This advantage, which affects the installation and removal of the pump nozzles, is further supplemented by the fact that the connection between the pump nozzle and the cylinder head is so elastic that deformations and breaks are largely avoided.
Durch die Länge der Spannschrauben, die Elastizität der Spannbügel und den Kraftangriff am Kopfgehäuse wird gleichzeitig die nötige Elastitzität der Niederspannung und die Aufnahme der pulsierenden Druckkräfte im Inneren des Kopfgehäuses erreicht. Dadurch, daß am Pumpengehäuse keine seitlichen Kräfte mehr angreifen, entstehen im Gehäuse keine Biegespannungen, wodurch dessen Standfestigkeit und Abdichtung gegenüber dem Zylinderkopf verbessert werden. Da die Endteile der Spannbügel einfach auf Vorsprüngen des Kopfgehäuses aufliegen, können - insbesondere durch Wahl des Winkels der Spannbügel zur Richtung der Zylinderachse - mit identischen Teilen verschiedene Zylinderabstände realisiert werden.Due to the length of the clamping screws, the elasticity of the clamping bracket and the force applied to the head housing, the necessary elasticity of the low voltage and the absorption of the pulsating pressure forces inside the head housing are achieved. The fact that no lateral forces act on the pump housing means that there are no bending stresses in the housing, which improves its stability and sealing against the cylinder head. Since the end parts of the clamping brackets simply rest on projections of the head housing, different cylinder spacings can be realized with identical parts, in particular by choosing the angle of the clamping brackets with respect to the direction of the cylinder axis.
Eine vorteilhafte Weiterbildung der Erfindung ist in Anspruch 2 angegeben. Danach sind die Endteile der Spannbügel vorzugsweise ballig ausgebildet und in der Mitte der Spannbügel ist eine sphärische Auflage für den Angriff der Spannschraube angeordnet. Mit dieser Weiterbildung der Erfindung können Höhenunterschiede zwischen den Vorspüngen der Pumpedüsen ausgeglichen werden.An advantageous development of the invention is specified in
Im folgenden wird die Erfindung anhand von Figuren beschrieben, wobei Fig. 1 einen Längsschnitt durch die Zylinderkopfwand darstellt, Fig. 2 eine stark vereinfachte Draufsicht auf Fig. 1 und Fig. 3 eine Anordnung derselben Bauteile bei größerem Zylinderabstand.The invention is described below with reference to figures, in which FIG. 1 shows a longitudinal section through the cylinder head wall, FIG. 2 shows a greatly simplified plan view of FIG. 1 and FIG. 3 shows an arrangement of the same components with a larger cylinder spacing.
In Fig. 1 sind in einer Zylinderkopfwand (1) eine Pumpedüse (2) im Schnitt und eine Pumpedüse (3) in Ansicht dargestellt. Beide werden von einer nicht dargestellten Nockenwelle über Druckstücke (4) vom Motor angetrieben. Die Pumpedüsen (2, 3) werden von einem Pumpengehäuse (5) umfaßt, das in einer Stufenbohrung (6) der Zylinderkopfwand (1) steckt. Dichtungen und Kraft-stoffzu - und -abfuhr zur und von der Pumpedüse sind der Einfachheit halber nicht dargestellt. Das Pumpengehäuse (5) enthält eine Pumpenkolbenbüchse (7), in der ein Kolben (8) arbeitet. Das Pumpengehäuse (5) ist oben durch ein Kopfgehäuse (13) dicht abgeschlossen, das einen elektromagnetischen Antrieb (14) für das Stellglied (15) enthält, das hier beispielsweise eine Verdrehung des Pumpenkolbens (8) bewirkt. Das Innere vom Pumpengehäuse (5) und Kopfgehäuse (13) ist ganz mit Kraftstoff gefüllt. Durch die Arbeitsbewegung der Führungshülse (9) herrscht im Ringraum (10) ein pulsierender Druck, der 25 bar erreichen kann. Dieser pflanzt sich durch den elektromagnetischen Antrieb (14) hindurch in den Kopfraum (12) fort. Dadurch entsteht dort eine pulsierende Kraft, die das Kopfgehäuse (13) vom Pumpengehäuse (5) abzuheben trachtet.In Fig. 1, a pump nozzle (2) in section and a pump nozzle (3) are shown in view in a cylinder head wall (1). Both are driven by a camshaft, not shown, via thrust pieces (4) from the engine. The pump nozzles (2, 3) are surrounded by a pump housing (5) which is inserted in a stepped bore (6) in the cylinder head wall (1). Seals and fuel supply and discharge to and from the pump nozzle are not shown for the sake of simplicity. The pump housing (5) contains a pump piston liner (7) in which a piston (8) works. The pump housing (5) is sealed off at the top by a head housing (13) which contains an electromagnetic drive (14) for the actuator (15) which, for example, causes the pump piston (8) to rotate. The inside of the pump housing (5) and head housing (13) is completely filled with fuel. The working movement of the guide sleeve (9) prevails in the annular space (10) a pulsating pressure that can reach 25 bar. This propagates through the electromagnetic drive (14) into the head space (12). This creates a pulsating force there that tries to lift the head housing (13) from the pump housing (5).
Das Kopfgehäuse (13) trägt an gegenüberliegenden Seiten Vorsprünge (20) mit horizontalen Angriffsflächen (21) für Spannbügel (22). Die Spannbügel (22) haben ballige Endteile (23), die auf den Angriffsflächen (21) aufliegen. In der Mitte der Spannbügel (22) greift über eine ballige Beilagscheibe (26) eine Dehnschraube (24) an, die für das Niederspannen der Pumpedüse (2, 3) auf die Zylinderkopfwand (1) sorgt.The head housing (13) has projections (20) on opposite sides with horizontal engagement surfaces (21) for the clamping bracket (22). The clamping bracket (22) have spherical end parts (23) which rest on the contact surfaces (21). In the middle of the clamping bracket (22), a expansion screw (24) engages via a spherical washer (26), which ensures that the pump nozzle (2, 3) is clamped down on the cylinder head wall (1).
In Fig. 2 ist zu erkennen, daß die Spannbügel (22) unter einem Winkel (25) gegenüber der Richtung der Motorachse (27) geneigt sind. Wo auf der Angriffsfläche (21) die Spannbügel (22) angreifen, ist nicht kritisch. Dadurch ist es möglich, identische Pumpedüsen (2, 3) und Spannbügel (22) gemäß Fig. 3 auch bei größerem Zylinderabstand (28) einzusetzen, wobei sich ein anderer Winkel (25) ergibt, der auch 0° betragen kann. Bei noch größeren Zylinderabständen können natürlich auch längere Spannbügel (22) verwendet werden.In Fig. 2 it can be seen that the clamping bracket (22) are inclined at an angle (25) with respect to the direction of the motor axis (27). Where the clamping brackets (22) engage on the attack surface (21) is not critical. This makes it possible to use identical pump nozzles (2, 3) and clamping brackets (22) according to FIG. 3 even with a larger cylinder spacing (28), a different angle (25) resulting which can also be 0 °. With even larger cylinder distances, longer clamping brackets (22) can of course also be used.
Claims (2)
- Arrangement for mounting a row of pump nozzles (2, 3) on the cylinder head of an internal combustion engine, in which each pump nozzle (2, 3) comprises a pump housing (5) which is pressed sealingly into a stepped bore (6) of a cylinder head by means of clamping bolts (24), and a head housing (13) which contains final control elements and which is connected sealingly to the pump housing (5) and comprises projections (20) on two opposed sides, characterised in that an end portion (23) of a common clamping bracket (22) which is pulled downwardly by a clamping bolt (24) rests in each case only on the projections (20) of two adjacent pump nozzles (2, 3) facing towards each other, and each clamping bracket (22) forms an angle (25) with the direction of the longitudinal axis (27) of the engine.
- Arrangement according to claim 1, characterised in that the end portions (23) of the clamping brackets (22) are cambered and in the middle of the clamping brackets (22) is arranged a spherical support (26) for engagement of the clamping bolt (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT89118437T ATE87995T1 (en) | 1988-11-14 | 1989-10-04 | PUMP NOZZLE AND FIXING DEVICE THEREOF. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8814249U | 1988-11-14 | ||
| DE8814249U DE8814249U1 (en) | 1988-11-14 | 1988-11-14 | Pump nozzle and fastening device for it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0369151A1 EP0369151A1 (en) | 1990-05-23 |
| EP0369151B1 true EP0369151B1 (en) | 1993-04-07 |
Family
ID=6829869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89118437A Expired - Lifetime EP0369151B1 (en) | 1988-11-14 | 1989-10-04 | Monobloc injection pump and nozzle and fastening device |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0369151B1 (en) |
| AT (1) | ATE87995T1 (en) |
| DE (2) | DE8814249U1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4222081C2 (en) * | 1992-07-04 | 2003-09-04 | Deutz Ag | Diesel engine |
| US5697345A (en) * | 1994-12-28 | 1997-12-16 | Cummins Engine Company, Inc. | Clamping load distributor for a fuel injector |
| US5706786A (en) * | 1994-12-28 | 1998-01-13 | Cummins Engine Company, Inc. | Distortion reducing load ring for a fuel injector |
| EP2466115B1 (en) * | 2010-12-15 | 2015-07-08 | FPT Industrial S.p.A. | System for fixing an injector to the engine head of a vehicle, method for fixing the injector, and manufacturing method of the system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4290394A (en) * | 1980-03-07 | 1981-09-22 | Brunswick Corporation | Two-cycle engine with fuel injection |
| AT372502B (en) * | 1981-02-02 | 1983-10-25 | Friedmann & Maier Ag | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES, ESPECIALLY DIESEL ENGINES |
-
1988
- 1988-11-14 DE DE8814249U patent/DE8814249U1/en not_active Expired
-
1989
- 1989-10-04 DE DE8989118437T patent/DE58904013D1/en not_active Expired - Fee Related
- 1989-10-04 AT AT89118437T patent/ATE87995T1/en not_active IP Right Cessation
- 1989-10-04 EP EP89118437A patent/EP0369151B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE8814249U1 (en) | 1989-01-19 |
| DE58904013D1 (en) | 1993-05-13 |
| ATE87995T1 (en) | 1993-04-15 |
| EP0369151A1 (en) | 1990-05-23 |
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