EP1117924A1 - Accumulateur de carburant haute pression - Google Patents

Accumulateur de carburant haute pression

Info

Publication number
EP1117924A1
EP1117924A1 EP00956116A EP00956116A EP1117924A1 EP 1117924 A1 EP1117924 A1 EP 1117924A1 EP 00956116 A EP00956116 A EP 00956116A EP 00956116 A EP00956116 A EP 00956116A EP 1117924 A1 EP1117924 A1 EP 1117924A1
Authority
EP
European Patent Office
Prior art keywords
base body
tubular base
pressure fuel
fuel accumulator
connections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP00956116A
Other languages
German (de)
English (en)
Other versions
EP1117924B1 (fr
Inventor
Kurt Frank
Steffen Jung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1117924A1 publication Critical patent/EP1117924A1/fr
Application granted granted Critical
Publication of EP1117924B1 publication Critical patent/EP1117924B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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 relates to a high-pressure fuel accumulator for a common rail fuel injection system of an internal combustion engine, having a tubular base body which is equipped with a plurality of connections.
  • Such a high-pressure fuel accumulator is e.g. described in DE 196 40 480.
  • a high-pressure pump possibly with the aid of a prefeed pump, conveys the fuel to be injected from a tank into the central high-pressure fuel reservoir, which is referred to as the common rail.
  • Fuel lines lead from the rail to the individual injectors, which are assigned to the cylinders of the internal combustion engine.
  • the injectors are individually controlled by the engine electronics in order to inject fuel into the combustion chamber of the internal combustion engine. The pressure generation and the injection are decoupled from one another by the high-pressure fuel reservoir.
  • the rail known from DE 196 40 480 is made from a precisely fitting forged blank. Different engine variants are used Forging blanks needed.
  • the object of the invention is a
  • High-pressure fuel storage can be constructed simply and inexpensively manufactured.
  • the object is achieved in a high-pressure fuel accumulator for a common rail fuel injection system of an internal combustion engine, with a tubular base body which is equipped with a plurality of connections, in that a continuous connection strip is formed on the tubular base body.
  • the connections in the continuous terminal strip can be formed by a machining manufacturing process such as drilling.
  • the distance between the connections can be chosen arbitrarily. It is therefore possible to use a forging blank for the production of different rails for different engine variants. This considerably reduces the tool costs required for the production of the forged blank.
  • Fuel injection system of an internal combustion engine with a tubular base body which is equipped with a plurality of connections, also solved in that a plurality of connection pieces are formed on the tubular base body, the dimensions of which in the longitudinal direction of the tubular base body are larger than the space required for the connections.
  • the connecting pieces can be made so wide that the position of the connections, for example, produced by a machining manufacturing process is freely selectable within the specified width. This ensures that a forged blank can be used for the production of different rails for different engine variants. This considerably reduces the tool costs required for the production of the forged blank.
  • a high-pressure fuel accumulator for a common rail fuel injection system of an internal combustion engine with a tubular base body which is equipped with a plurality of connections, in that the connections are each provided in a connection part which engages around the tubular base body and is arranged in the region of an opening in the tubular base body.
  • the opening can e.g. can be attached at any point of the tubular base body by a machining manufacturing process, such as drilling.
  • the separate connecting part can therefore also be attached at any point on the tubular base body.
  • a special embodiment of the invention is characterized in that the connecting part is fastened to the tubular base body with the aid of a clamp connection.
  • the clamp connection can be done by a screw connection be made releasable.
  • the clamp connection can also be designed as a riveted, shrink or welded connection.
  • a further special embodiment of the invention is characterized in that at least one fastening flange encompassing the tubular base body is clamped on the tubular base body with a fastening tab.
  • the fastening tab is used to fasten the high-pressure fuel accumulator to the internal combustion engine.
  • a further special embodiment of the invention is characterized in that the connecting strip or the connecting pieces are forged on the tubular base body. This increases the high pressure resistance and the service life of the high-pressure fuel accumulator according to the invention.
  • Another special embodiment of the invention is characterized in that several fastening tabs are welded to the tubular base body.
  • the welding of the fastening straps provides the advantage that the position of the fastening straps or the attachments can be freely selected.
  • a further special embodiment of the invention is characterized in that the tubular base body has a blind hole running in the longitudinal direction, the open end of which is closed by a pressure sensor. This provides the advantage that no additional high pressure seal is required for the pressure sensor. A plug for the open end of the blind hole can be omitted.
  • Another special embodiment of the invention is characterized in that the pressure sensor is surrounded by a protective sleeve.
  • the protective sleeve serves to protect the pressure sensor from mechanical damage.
  • the protective sleeve can be formed in one piece or in two pieces.
  • Figure 1 shows a first embodiment of a high-pressure fuel reservoir according to the invention, partly in longitudinal section;
  • FIG. 2 shows a section of a second embodiment of a high-pressure fuel accumulator according to the invention with a connecting part;
  • Figure 3 shows the connector from Figure 2 in a separate
  • Figure 4 shows a mounting flange also in side view.
  • FIG. 1 a first embodiment of a high-pressure fuel reservoir according to the invention is shown in longitudinal section.
  • the high-pressure fuel reservoir shown comprises a tubular base body 1.
  • a blind hole 2 is provided in the longitudinal direction in the tubular base body 1.
  • the Blind hole 2 forms the storage volume of the high-pressure fuel reservoir.
  • the open end of the blind hole 2 is closed by a rail pressure sensor 3.
  • the rail pressure sensor 3 is surrounded by a protective sleeve 4, which has the shape of a hollow cylinder.
  • connection piece 5 On the outside of the tubular base body 1, four connecting pieces 5, 6, 7 and 8 are attached. A connection bore is formed in each of the connection pieces 5 to 8. A connection bore 9 is shown as an example in the connection piece 5. As can be seen in FIG. 1, the diameter of the connection hole 9 in the connection piece 5 is much smaller than the width b of the connection piece 5. This makes it possible to position the connection hole 9 at different points on the connection piece 5.
  • connection bores in the connection pieces 5 to 8 The distance between the individual connection bores in the connection pieces 5 to 8 is indicated by a.
  • the connection bores each have the same distance a from one another.
  • the distances of the center lines of the connection bores in the connection pieces 5 to 8 from the closed end of the tubular base body 1 are indicated in FIG. 1 with f x , f 2 , f 3 and f 4 .
  • the tubular base body 1 shown in FIG. 1 is a forged part.
  • the connecting pieces 5 to 8 are forged onto the tubular base body 1.
  • the forged connecting pieces 5 to 8 are so wide that the positions f 17 f 2 , f 3 and f 4 of the injector connections 5 to 8 produced by machining can be freely selected within the width b.
  • This means that the forging blank can be used universally for common cylinder spacings (e.g. with conventional four-cylinder engines).
  • the extreme case is a continuous forged bar instead of the individual connecting pieces 5 to 8.
  • Fastening tabs 10 and 11 welded on.
  • the distances between the fastening tabs 10 and 11 from the closed end of the tubular base body 1 are indicated by d x and d 2 .
  • the position of the welded mounting tabs 10 and 11 can be freely selected depending on the motor to be fitted.
  • FIG. 2 shows a second embodiment of a high-pressure fuel accumulator according to the invention.
  • a longitudinal bore 22 is arranged in a tubular base body 21, which is only shown in sections.
  • a separate connecting part 25 is clamped on a section of the tubular base body 21 with the aid of a screw connection 28.
  • the connection between the connecting part 25 and the tubular base body 21 can also be made by shrinking, riveting or welding.
  • the connecting part 25 can be manufactured as a forged, stamped or extruded part in large quantities as a supply part.
  • connection part 25 surrounds the tubular base body 21.
  • connection part 25 is formed with an internal thread for mounting injection lines or sensors or valves.
  • connection bore 26 communicates with the longitudinal bore 22 in the tubular base body 21.
  • Connecting part 25 a separating flange is provided for bracing on the tubular base body 21.
  • FIG. 3 shows the connection part 25 in a separate representation in a side view.
  • the clamping force required to fasten the connecting part 25 to the tubular base body 21 is generated by the screw connection 28.
  • FIG. 4 shows a fastening flange 30 which is similar to the connecting part 25.
  • a fastening tab 31 is formed on the fastening flange 30 and is used to fasten the high-pressure fuel reservoir according to the invention to the internal combustion engine.
  • the fastening flange 30 is clamped onto the tubular base body 21 in exactly the same way as the connecting part 25.
  • the clamping force required for clamping is provided by a screw connection 32.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP00956116A 1999-08-03 2000-08-01 Accumulateur de carburant haute pression Expired - Lifetime EP1117924B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19936534A DE19936534A1 (de) 1999-08-03 1999-08-03 Kraftstoffhochdruckspeicher
DE19936534 1999-08-03
PCT/DE2000/002563 WO2001009508A1 (fr) 1999-08-03 2000-08-01 Accumulateur de carburant haute pression

Publications (2)

Publication Number Publication Date
EP1117924A1 true EP1117924A1 (fr) 2001-07-25
EP1117924B1 EP1117924B1 (fr) 2005-04-27

Family

ID=7917044

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00956116A Expired - Lifetime EP1117924B1 (fr) 1999-08-03 2000-08-01 Accumulateur de carburant haute pression

Country Status (8)

Country Link
US (1) US6644279B1 (fr)
EP (1) EP1117924B1 (fr)
JP (1) JP2003506613A (fr)
KR (1) KR100691207B1 (fr)
AT (1) ATE294326T1 (fr)
CZ (1) CZ296995B6 (fr)
DE (2) DE19936534A1 (fr)
WO (1) WO2001009508A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE10128715B4 (de) * 2001-05-04 2005-09-22 Mtu Friedrichshafen Gmbh Kraftstoffhochdruckleitung
DE10249105B4 (de) * 2002-10-21 2007-12-13 Sls Micro Technology Gmbh Mikrofluides System und Verfahren zur Herstellung eines solchen
DE10249219B4 (de) * 2002-10-22 2007-04-05 Siemens Ag Kraftstoffhochdruckspeicher
DE10314029A1 (de) 2003-03-28 2004-10-07 Deutz Ag Brennkraftmaschine mit einem Speichereinspritzsystem
JP4069913B2 (ja) * 2004-09-10 2008-04-02 株式会社デンソー 蓄圧式燃料噴射システムに用いられる継手部材の接合方法および取付ステーの接合方法
DE102006017900A1 (de) * 2006-04-13 2007-10-25 Robert Bosch Gmbh Befestigungsvorrichtung für Hochdruckleitungen an einem Hochdruckspeicher
KR100765593B1 (ko) * 2006-09-20 2007-10-09 현대자동차주식회사 엔진의 연료파이프와 슬리이브 체결구조
FR2950396B1 (fr) * 2009-09-22 2012-04-27 Mark Iv Systemes Moteurs Sa Module fonctionnel integrant un repartiteur et une rampe d'injection et son procede de fabrication
JP2011144768A (ja) * 2010-01-15 2011-07-28 Maruyasu Industries Co Ltd 直噴エンジン用高圧燃料デリバリパイプ及びその製造方法
DE102012001926A1 (de) * 2012-02-02 2013-08-08 Benteler Automobiltechnik Gmbh Kraftstoffverteilerleiste
JP6230407B2 (ja) * 2013-12-19 2017-11-15 マルヤス工業株式会社 直噴エンジン用高圧燃料デリバリパイプアセンブリ
KR101715037B1 (ko) * 2015-04-08 2017-04-03 주식회사 세림티앤디 냉간단조에 의한 차량 엔진 연료레일용 보스 제조 방법 및 제조 장치
JP6794900B2 (ja) * 2017-03-30 2020-12-02 株式会社デンソー 流体通路装置の製造方法および流体通路装置
DE102017122301B3 (de) 2017-09-26 2018-10-31 Benteler Automobiltechnik Gmbh Kraftstoffverteiler
DE102019220377A1 (de) * 2019-12-20 2021-06-24 Robert Bosch Gmbh Fluidverteiler für eine Einspritzanlage, insbesondere Brennstoffverteilerleiste für eine Brennstoffeinspritzanlage für gemischverdichtende, fremdgezündete Brennkraftmaschinen

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DE3223556A1 (de) * 1982-06-24 1983-12-29 Robert Bosch Gmbh, 7000 Stuttgart Fluidleitung
US4570602A (en) * 1982-08-23 1986-02-18 General Motors Corporation Fuel rail
FR2547868B1 (fr) * 1983-06-21 1985-12-27 Gerard De Bruyn Procede de fabrication d'une rampe d'injection d'essence, et rampe obtenue par ce procede
JPS63125171U (fr) * 1987-02-09 1988-08-16
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CA1321806C (fr) * 1989-09-27 1993-08-31 Dominique Lesquir Connecteur pour systeme de collecte de seve
US5423303A (en) * 1993-05-28 1995-06-13 Bennett; David E. Fuel rail for internal combustion engine
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JP3757432B2 (ja) * 1994-04-13 2006-03-22 株式会社デンソー 燃料供給装置およびデリバリパイプ
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JP3384885B2 (ja) * 1994-09-22 2003-03-10 マルヤス工業株式会社 フューエルデリバリ装置
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Also Published As

Publication number Publication date
JP2003506613A (ja) 2003-02-18
EP1117924B1 (fr) 2005-04-27
US6644279B1 (en) 2003-11-11
DE50010159D1 (de) 2005-06-02
KR100691207B1 (ko) 2007-03-08
KR20010075485A (ko) 2001-08-09
DE19936534A1 (de) 2001-03-01
CZ20011139A3 (cs) 2002-01-16
ATE294326T1 (de) 2005-05-15
WO2001009508A1 (fr) 2001-02-08
CZ296995B6 (cs) 2006-08-16

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