EP1131553B1 - High-pressure fuel accumulator for fuel injection systems in internal combustion engines - Google Patents

High-pressure fuel accumulator for fuel injection systems in internal combustion engines Download PDF

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Publication number
EP1131553B1
EP1131553B1 EP00960353A EP00960353A EP1131553B1 EP 1131553 B1 EP1131553 B1 EP 1131553B1 EP 00960353 A EP00960353 A EP 00960353A EP 00960353 A EP00960353 A EP 00960353A EP 1131553 B1 EP1131553 B1 EP 1131553B1
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EP
European Patent Office
Prior art keywords
pressure fuel
fuel accumulator
storage space
accumulator
pressure
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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EP00960353A
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German (de)
French (fr)
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EP1131553A1 (en
Inventor
Kurt Frank
Helmut Knoedl
Henning Kreschel
Friedrich Boecking
Steffen Jung
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP1131553A1 publication Critical patent/EP1131553A1/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
    • 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
    • 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

Definitions

  • the invention is based on a high-pressure fuel accumulator for a fuel injection system for internal combustion engines with a storage space and at least one connecting piece.
  • a cylindrical high-pressure fuel storage is known from DE-OS 196 40 480 Al, in which the longitudinal axis of the bore, the storage space and connecting piece connects, is a secant of the circular storage space cross-section. This results in a reduction of the stresses in the region of the intersection of the inner wall of the reservoir and the bore, so that the load capacity and service life of the high-pressure fuel accumulator are increased.
  • a high-pressure fuel accumulator in which the high-pressure fuel lines are pressed into a sealing surface produced directly in the storage wall. Between this sealing surface and the interior of the high-pressure fuel storage multiple connection holes are provided.
  • the invention has for its object to provide a high-pressure fuel storage with increased pressure resistance, especially at swelling compressive stress.
  • a high-pressure fuel storage with the characterizing features of claim 1.
  • This has the advantage that, with the same hydraulic diameter, the stress peaks caused by the smaller connection bores are less than with a single large diameter bore. This increases the compressive strength and service life of the high-pressure fuel accumulator.
  • the high-pressure fuel storage can be adapted to different operating conditions while optimizing the Fier eins slaughter by the number and diameter of the connecting holes are changed. In principle, a large number of small diameter connecting bores lead to high pressure resistance of the high-pressure fuel accumulator.
  • connection holes open tangentially into the storage space
  • the storage space is cylindrical, so that it can be easily and inexpensively manufactured.
  • Another variant sees a spherical storage space before, so that, apart from the Verschneidungs Schemeen with the connecting holes, a uniform state of tension in the memory prevails.
  • the connecting holes open into a collecting bore of the connecting piece, so that the connecting piece can be connected in a known manner with a high-pressure line.
  • the connecting bores opening tangentially into the storage space have a larger diameter than the connecting bores which do not open tangentially into the storage space, so that the tension peaks caused by the connecting bores are approximately the same and thus the strength of the material is utilized in the best possible way.
  • the high-pressure fuel storage is produced by forging, so that the material properties are improved.
  • Another alternative provides that at least one fastening tab is arranged on the high-pressure fuel accumulator, so that the memory can be easily and securely fastened in the vehicle interior.
  • the high-pressure fuel storage is constructed of a tube with welded-on connection piece, so that the production is simplified.
  • a high-pressure fuel storage 1 according to the prior art is shown in partial longitudinal section.
  • the high-pressure fuel storage 1 has one or more connecting pieces 2, of which in Fig. 1, only one is shown. In addition, a fastening tab 3 is visible.
  • the connecting piece 2 has a bore 4, which connects the connecting piece 2 with the storage space 5 hydraulically.
  • the area 6 of the intersection between bore 4 and storage space 5 is the most vulnerable to fracture, because with increasing diameter of the bore 4, the stresses in the intersection region 6 increase. However, so that the throttle effect of the bore 4 remains low, the diameter of the bore 4 should be as large as possible.
  • FIG. 2 shows a cross section of a high-pressure fuel accumulator 1 according to the invention.
  • the connecting piece 2 has in its upper part a collecting hole 7, which is divided into two connecting holes 8. This has the advantage that the diameter of the connecting bores 8 relative to the diameter of the storage space 5 is relatively small. As a result, the voltages in the Verschneidungs Schemeen 9 are relatively low.
  • the connecting holes 8 open tangentially into the storage space 5. This has the additional advantage that at tangential junction of the connecting holes 8 in the storage space 5 the Only superimpose individual loads vectorially, resulting in a further reduction of the loads.
  • Fig. 3a is a plan view of a high-pressure fuel storage 1 according to the invention with connecting piece 2 is shown. It can be clearly seen that, starting from the collecting bore 7, two connecting bores 8 open into the storage space 5, shown only in dashed lines.
  • Fig. 3 b is a plan view of an embodiment of the invention with four connecting holes 8 is shown. It goes without saying that the number and the arrangement of the connecting holes 8 can be selected depending on the required hydraulic diameter, working pressure of the memory and the strength of the storage material.
  • FIG. 4 a shows a plan view of a further embodiment of a high-pressure fuel accumulator 1 according to the invention.
  • the connecting piece 2 is offset from the center with respect to the longitudinal axis of the high-pressure fuel accumulator. This offset causes the connecting holes 8 open tangentially into the storage space 5.
  • FIG. 4b shows a longitudinal section along the line AA of a high-pressure fuel accumulator 1 according to the invention.
  • the Intersections 9 of connecting holes 8 and memory space 5 to recognize well.
  • the tangential opening of the connecting bores 8 in the storage space 5 causes a reduction of the stresses in the Verschneidungs Schemeen 9th

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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)

Abstract

A high-pressure fuel reservoir is proposed in which the hydraulic connection between the connection fitting and the reservoir chamber is produced by a number of connecting bores. This reduces the stress peaks in the vicinity of the intersections of the connecting bore and reservoir chamber so that the compression capacity of the high-pressure fuel reservoir increases.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Kraftstoffhochdruckspeicher für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen mit einem Speicherraum und mindestens einem Anschlussstutzen.The invention is based on a high-pressure fuel accumulator for a fuel injection system for internal combustion engines with a storage space and at least one connecting piece.

Bei solchen Kraftstoffhochdruckspeichern kommt es im Bereich der Verschneidung der Speicherrauminnenwand und der Bohrung, die Speicherraum und Anschlussstutzen verbindet, zu Spannungsspitzen. Daraus resultiert die Gefahr, dass der Kraftstoffhochdruckspeicher in diesem Bereich bricht, insbesondere, weil der Speicherraum schwellenden Druckbeanspruchungen ausgesetzt ist. Um diese Bruchgefährdung zu verringern, wurden verschiedene Anstrengungen unternommen.In such high-pressure fuel accumulators, voltage spikes occur in the area of the intersection of the storage space inner wall and the bore, which connects the storage space and the connecting piece. This results in the risk that the high-pressure fuel storage breaks in this area, in particular because the storage space is exposed to swelling compressive stresses. To reduce this risk of breakage, various efforts have been made.

Eine naheliegende Möglichkeit besteht darin, die Wandstärke des Kraftstoffhochdruckspeichers zu erhöhen. Allerdings sind der Wandstärke des Kraftstoffhochdruckspeichers Grenzen gesetzt, da dickwandige Körper bei hohen schwellenden Druckbelastungen zur Rissbildung, vor allem im Bereich von Wanddurchbrüchen und scharfkantigen Querschnittsänderungen, neigen.An obvious possibility is to increase the wall thickness of the high-pressure fuel accumulator. However, the wall thickness of the fuel high-pressure accumulator limits, since thick-walled body at high swelling pressure loads tend to cracking, especially in the range of wall breakthroughs and sharp-edged cross-sectional changes.

Bekannt ist ein zylindrischer Kraftstoffhochdruckspeicher aus der DE-OS 196 40 480 Al, bei dem die Längsachse der Bohrung, die Speicherraum und Anschlussstutzen verbindet, eine Sekante des kreisförmigen Speicherraumquerschnitts ist. Dadurch ergibt sich eine Reduktion der Spannungen im Bereich der Verschneidung von Speicherinnenwand und Bohrung, so dass Belastbarkeit und Lebensdauer des Kraftstoffhochdruckspeichers gesteigert werden.A cylindrical high-pressure fuel storage is known from DE-OS 196 40 480 Al, in which the longitudinal axis of the bore, the storage space and connecting piece connects, is a secant of the circular storage space cross-section. This results in a reduction of the stresses in the region of the intersection of the inner wall of the reservoir and the bore, so that the load capacity and service life of the high-pressure fuel accumulator are increased.

Aus den Patents Abstracts of Japan Publ. No. 10288124 A ist ein Kraftstoffhochdruckspeicher bekannt bei dem die Kraftstoffhochdruckleitungen in eine direkt in der Speicherwandung ausgearbeitete Dichtfläche gepresst werden. Zwischen dieser Dichtfläche und dem Innenraum des Kraftstoffhochdruckspeichers sind mehrere Verbindungsbohrungen vorgesehen.From the Patents Abstracts of Japan Publ. No. 10288124 A, a high-pressure fuel accumulator is known in which the high-pressure fuel lines are pressed into a sealing surface produced directly in the storage wall. Between this sealing surface and the interior of the high-pressure fuel storage multiple connection holes are provided.

Der Erfindung liegt die Aufgabe zugrunde, einen Kraftstoffhochdruckspeicher mit erhöhter Druckfestigkeit, insbesondere bei schwellender Druckbeanspruchung bereitzustellen.The invention has for its object to provide a high-pressure fuel storage with increased pressure resistance, especially at swelling compressive stress.

Diese Aufgabe wird erfindungsgemäß durch einen Kraftstoffhochdruckspeicher mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Dies hat den Vorteil, dass bei gleichem hydraulischen Durchmesser die durch die kleineren Verbindungsbohrungen verursachten Spannungspitzen geringer als bei einer einzigen Bohrung großen Durchmessers sind. Damit erhöhen sich Druckfestigkeit und Lebensdauer des Kraftstoffhochdruckspeichers. Außerdem kann der Kraftstoffhochdruckspeicher an verschiedene Einsatzbedingungen bei gleichzeitiger Optimierung der Fierstellungskosten angepasst werden, indem Zahl und Durchmesser der Verbindungsbohrungen verändert werden. Grundsätzlich gilt, dass eine große Zahl von Verbindungsbohrungen kleinen Durchmessers zu einer hohen Druckfestigkeit des Kraftstoffhochdruckspeichers führen.This object is achieved by a high-pressure fuel storage with the characterizing features of claim 1. This has the advantage that, with the same hydraulic diameter, the stress peaks caused by the smaller connection bores are less than with a single large diameter bore. This increases the compressive strength and service life of the high-pressure fuel accumulator. In addition, the high-pressure fuel storage can be adapted to different operating conditions while optimizing the Fierstellungskosten by the number and diameter of the connecting holes are changed. In principle, a large number of small diameter connecting bores lead to high pressure resistance of the high-pressure fuel accumulator.

Dadurch, dass eine oder mehrere Verbindungsbohrungen tangential in den Speicherraum münden, werden die durch die Verbindungsbohrungen hervorgerufenen Spannungsspitzen weiter reduziert.The fact that one or more connecting holes open tangentially into the storage space, the voltage peaks caused by the connection holes are further reduced.

Bei einer Ausgestaltung der Erfindung ist der Speicherraum zylindrisch, so dass er einfach und kostengünstig hergestellt werden kann.In one embodiment of the invention, the storage space is cylindrical, so that it can be easily and inexpensively manufactured.

Eine andere Variante sieht einen kugelförmigen Speicherraum vor, so dass, abgesehen von den Verschneidungsbereichen mit den Verbindungsbohrungen, ein gleichmäßiger Spannungszustand im Speicher herrscht.Another variant sees a spherical storage space before, so that, apart from the Verschneidungsbereichen with the connecting holes, a uniform state of tension in the memory prevails.

Bei einer weiteren Ausgestaltung der Erfindung münden die Verbindungsbohrungen in eine Sammelbohrung des Anschlussstutzens, so dass der Anschlussstutzen in bekannter weise mit einer Hochdruck-Leitung verbunden werden kann.In a further embodiment of the invention, the connecting holes open into a collecting bore of the connecting piece, so that the connecting piece can be connected in a known manner with a high-pressure line.

Bei einer weiteren Ausgestaltung der Erfindung haben die tangential in den Speicherraum mündenden Verbindungsbohrungen einen größeren Durchmesser als die nicht tangential in den Speicherraum mündenden Verbindungsbohrungen, so dass die durch die Verbindungsbohrungen hervorgerufenen Spannungsspitzen annähernd gleich sind und somit die Festigkeit des Werkstoffs bestmöglich ausgenutzt wird.In a further embodiment of the invention, the connecting bores opening tangentially into the storage space have a larger diameter than the connecting bores which do not open tangentially into the storage space, so that the tension peaks caused by the connecting bores are approximately the same and thus the strength of the material is utilized in the best possible way.

Bei einer weiteren Ausführungsform der Erfindung ist der Kraftstoffhochdruckspeicher durch Schmieden hergestellt, so dass die Werkstoffeigenschaften verbessert werden.In a further embodiment of the invention, the high-pressure fuel storage is produced by forging, so that the material properties are improved.

Eine andere Alternative sieht vor, dass an dem Kraftstoffhochdruckspeicher mindestens eine Befestigungslasche angeordnet ist, so dass der Speicher einfach und sicher im Fahrzeuginnenraum befestigt werden kann.Another alternative provides that at least one fastening tab is arranged on the high-pressure fuel accumulator, so that the memory can be easily and securely fastened in the vehicle interior.

In weiterer Ausgestaltung der Erfindung ist der Kraftstoffhochdruckspeicher aus einem Rohr mit angeschweisstem Anschlussstutzen aufgebaut, so dass die Herstellung vereinfacht wird.In a further embodiment of the invention, the high-pressure fuel storage is constructed of a tube with welded-on connection piece, so that the production is simplified.

Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung sind der Zeichnung und ihrer Beschreibung sowie den Ansprüchen entnehmbar.Further advantages and advantageous embodiments of the invention, the drawing and its description and the claims can be removed.

Ein Ausführungsbeispiel des Gegenstands der Erfindung ist in der Zeichnung dargestellt und im Folgenden näher beschrieben. Es zeigen:

Fig. 1:
einen zylindrischen Kraftstoffhochdruckspeicher nach dem Stand der Technik im Teillängsschnitt;
Fig. 2:
einen Querschnitt durch einen erfindungsgemäßen Kraftstoffhochdruckspeicher;
Fig. 3:
eine Draufsicht auf zwei Ausführungsformen eines erfindungsgemäßen Kraftstoffhochdruckspeichers, sowie
Fig. 4:
eine Draufsicht und einen Längsschnitt einer weiteren Ausführungsformen eines erfindungsgemäßen Kraftstoffhochdruckspeichers.
An embodiment of the object of the invention is illustrated in the drawing and described in more detail below. Show it:
Fig. 1:
a cylindrical fuel high-pressure accumulator according to the prior art in partial longitudinal section;
Fig. 2:
a cross section through a high-pressure fuel storage according to the invention;
3:
a plan view of two embodiments of a high-pressure fuel storage according to the invention, as well as
4:
a plan view and a longitudinal section of another embodiment of a inventive high-pressure fuel storage.

In Fig. 1 ist ein Kraftstoffhochdruckspeicher 1 nach dem Stand der Technik im Teillängsschnitt dargestellt. Der Kraftstoffhochdruckspeicher 1 hat einen oder mehrere Anschlussstutzen 2, von denen in Fig. 1 nur einer dargestellt ist. Außerdem ist eine Befestigungslasche 3 sichtbar. Der Anschlussstutzen 2 weist eine Bohrung 4 auf, die den Anschlussstutzen 2 mit dem Speicherraum 5 hydraulisch verbindet. Der Bereich 6 der Verschneidung zwischen Bohrung 4 und Speicherraum 5 ist am stärksten bruchgefährdet, weil mit zunehmendem Durchmesser der Bohrung 4 die Spannungen im Verschneidungsbereich 6 zunehmen. Allerdings muss, damit die Drosselwirkung der Bohrung 4 gering bleibt, der Durchmesser der Bohrung 4 möglichst groß gewählt werden.In Fig. 1, a high-pressure fuel storage 1 according to the prior art is shown in partial longitudinal section. The high-pressure fuel storage 1 has one or more connecting pieces 2, of which in Fig. 1, only one is shown. In addition, a fastening tab 3 is visible. The connecting piece 2 has a bore 4, which connects the connecting piece 2 with the storage space 5 hydraulically. The area 6 of the intersection between bore 4 and storage space 5 is the most vulnerable to fracture, because with increasing diameter of the bore 4, the stresses in the intersection region 6 increase. However, so that the throttle effect of the bore 4 remains low, the diameter of the bore 4 should be as large as possible.

In Fig. 2 ist ein Querschnitt eines erfindungsgemäßen Kraftstoffhochdruckspeichers 1 dargestellt. Der Anschlussstutzen 2 weist in seinem oberen Teil eine Sammelbohrung 7 auf, die sich in zwei Verbindungsbohrungen 8 aufteilt. Dies hat den Vorteil, dass der Durchmesser der Verbindungsbohrungen 8 bezogen auf den Durchmesser des Speicherraums 5 relativ klein ist. Dadurch sind die Spannungen in den Verschneidungsbereichen 9 relativ gering.FIG. 2 shows a cross section of a high-pressure fuel accumulator 1 according to the invention. The connecting piece 2 has in its upper part a collecting hole 7, which is divided into two connecting holes 8. This has the advantage that the diameter of the connecting bores 8 relative to the diameter of the storage space 5 is relatively small. As a result, the voltages in the Verschneidungsbereichen 9 are relatively low.

Im gezeigten Beispiel münden die Verbindungsbohrungen 8 tangential in den Speicherraum 5. Dies hat den zusätzlichen Vorteil, dass sich bei tangentialer Einmündung der Verbindungsbohrungen 8 in den Speicherraum 5 die Einzelbelastungen nur noch vektoriell überlagern, so dass sich eine weitere Reduktion der Belastungen ergibt.In the example shown, the connecting holes 8 open tangentially into the storage space 5. This has the additional advantage that at tangential junction of the connecting holes 8 in the storage space 5 the Only superimpose individual loads vectorially, resulting in a further reduction of the loads.

In Fig. 3 a ist eine Draufsicht auf einen erfindungsgemäßen Kraftstoffhochdruckspeicher 1 mit Anschlussstutzen 2 dargestellt. Es ist deutlich zu erkennen, dass ausgehend von der Sammelbohrung 7 zwei Verbindungsbohrungen 8 in den nur gestrichelt dargestellten Speicherraum 5 münden.In Fig. 3a is a plan view of a high-pressure fuel storage 1 according to the invention with connecting piece 2 is shown. It can be clearly seen that, starting from the collecting bore 7, two connecting bores 8 open into the storage space 5, shown only in dashed lines.

In der Fig. 3 b ist eine Draufsicht auf eine Ausführungsform der Erfindung mit vier Verbindungsbohrungen 8 dargestellt. Es versteht sich von selbst, dass die Zahl und die Anordnung der Verbindungsbohrungen 8 je nach erforderlichem hydraulischem Durchmesser, Arbeitsdruck des Speichers und der Festigkeit des Speicherwerkstoffs gewählt werden können.In Fig. 3 b is a plan view of an embodiment of the invention with four connecting holes 8 is shown. It goes without saying that the number and the arrangement of the connecting holes 8 can be selected depending on the required hydraulic diameter, working pressure of the memory and the strength of the storage material.

In Fig. 4a ist eine Draufsicht auf eine weitere Ausführungsformen eines erfindungsgemäßen Kraftstoffhochdruckspeichers 1 dargestellt. Bei dieser Ausführungsform ist der Anschlussstutzen 2 bezüglich der Längsachse des Kraftstoffhochdruckspeichers aus der Mitte versetzt. Dieser Versatz bewirkt, dass die Verbindungsbohrungen 8 tangential in den Speicherraum 5 münden.FIG. 4 a shows a plan view of a further embodiment of a high-pressure fuel accumulator 1 according to the invention. In this embodiment, the connecting piece 2 is offset from the center with respect to the longitudinal axis of the high-pressure fuel accumulator. This offset causes the connecting holes 8 open tangentially into the storage space 5.

In Fig. 4b ist ein Längsschnitt entlang der Linie A-A eines erfindungsgemäßen Kraftstoffhochdruckspeichers 1 dargestellt. In dieser Darstellung sind die Verschneidungsbereiche 9 von Verbindungsbohrungen 8 und Speicherraum 5 gut zu erkennen. Das tangentiale Einmünden der Verbindungsbohrungen 8 in den Speicherraum 5 bewirkt eine Reduktion der Spannungen in den Verschneidungsbereichen 9.FIG. 4b shows a longitudinal section along the line AA of a high-pressure fuel accumulator 1 according to the invention. In this illustration, the Intersections 9 of connecting holes 8 and memory space 5 to recognize well. The tangential opening of the connecting bores 8 in the storage space 5 causes a reduction of the stresses in the Verschneidungsbereichen 9th

Claims (8)

  1. High-pressure fuel accumulator (1) for a fuel injection system for internal combustion engines having a storage space (5) and at least one connector (2), characterized in that a plurality of connecting bores (8) are provided between the storage space (5) and connector (2), and in that one or more connecting bores (8) open into the storage space (5) tangentially.
  2. High-pressure fuel accumulator (1) according to Claim 1, characterized in that the storage space (5) is cylindrical.
  3. High-pressure fuel accumulator (1) according to Claim 1, characterized in that the storage space is spherical.
  4. High-pressure fuel accumulator (1) according to one of the preceding claims, characterized in that the connecting bores (8) open into a collecting bore (7) of the connector (2).
  5. High-pressure fuel accumulator (1) according to one of the preceding claims, characterized in that the connecting bores (8) which open into the storage space (5) tangentially have a larger diameter than the connecting bores (8) which open into the storage space (5) in a non-tangential fashion.
  6. High-pressure fuel accumulator (1) according to one of the preceding claims, characterized in that the high-pressure fuel accumulator (1) is manufactured by forging.
  7. High-pressure fuel accumulator (1) according to one of the preceding claims, characterized in that at least one attachment clip (3) is arranged on the high-pressure fuel accumulator (1).
  8. High-pressure fuel accumulator (1) according to one of the preceding claims, characterized in that the high-pressure fuel accumulator (1) is constructed from a pipe with a welded-on connector (2).
EP00960353A 1999-08-11 2000-08-11 High-pressure fuel accumulator for fuel injection systems in internal combustion engines Expired - Lifetime EP1131553B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19937946A DE19937946C1 (en) 1999-08-11 1999-08-11 High-pressure fuel accumulator for a fuel injection system for internal combustion engines
DE19937946 1999-08-11
PCT/DE2000/002750 WO2001012980A1 (en) 1999-08-11 2000-08-11 High-pressure fuel accumulator for fuel injection systems in internal combustion engines

Publications (2)

Publication Number Publication Date
EP1131553A1 EP1131553A1 (en) 2001-09-12
EP1131553B1 true EP1131553B1 (en) 2006-04-05

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EP00960353A Expired - Lifetime EP1131553B1 (en) 1999-08-11 2000-08-11 High-pressure fuel accumulator for fuel injection systems in internal combustion engines

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Country Link
US (1) US6470855B1 (en)
EP (1) EP1131553B1 (en)
JP (1) JP2003507621A (en)
KR (1) KR100708222B1 (en)
AT (1) ATE322617T1 (en)
CZ (1) CZ296999B6 (en)
DE (2) DE19937946C1 (en)
WO (1) WO2001012980A1 (en)

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FR2765919B1 (en) * 1997-07-09 1999-10-01 Cideb FUEL DISTRIBUTION DEVICE FOR SUPPLYING THE CYLINDERS OF AN INTERNAL COMBUSTION ENGINE
US6463909B2 (en) * 2000-01-25 2002-10-15 Usui Kokusai Sangyo Kaisha Limited Common rail
US7869673B2 (en) * 2008-08-29 2011-01-11 Xtera Communications, Inc. Remote larger effective area optical fiber

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KR20010080081A (en) 2001-08-22
EP1131553A1 (en) 2001-09-12
CZ20011253A3 (en) 2002-02-13
CZ296999B6 (en) 2006-08-16
WO2001012980A1 (en) 2001-02-22
US6470855B1 (en) 2002-10-29
ATE322617T1 (en) 2006-04-15
JP2003507621A (en) 2003-02-25
KR100708222B1 (en) 2007-04-17
DE50012527D1 (en) 2006-05-18
DE19937946C1 (en) 2001-04-19

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