WO2001066934A1 - High-pressure fuel accumulator - Google Patents
High-pressure fuel accumulator Download PDFInfo
- Publication number
- WO2001066934A1 WO2001066934A1 PCT/DE2001/000823 DE0100823W WO0166934A1 WO 2001066934 A1 WO2001066934 A1 WO 2001066934A1 DE 0100823 W DE0100823 W DE 0100823W WO 0166934 A1 WO0166934 A1 WO 0166934A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- base body
- pressure fuel
- fuel accumulator
- tubular base
- Prior art date
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
- F02M55/004—Joints; Sealings
- F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
-
- 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
- Internal combustion engine with a tubular base body, to which at least one socket for connecting a high-pressure line is welded.
- Such a high-pressure fuel accumulator is e.g. in the
- 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 object of the invention is to improve the quality and safety at the high-pressure connection points
- High-pressure fuel storage can be constructed simply and inexpensively manufactured.
- the collar serves to introduce the welding current required to weld the socket.
- the welding electrode is placed on the end of the socket facing away from the base body.
- Spatter can get inside the socket and damage a thread provided there.
- the geometry inside the socket can undesirably deform due to the temperatures that occur during welding.
- a special embodiment of the invention is characterized in that a bore extends from the interior of the tubular base body, which opens into a receiving funnel, which widens outwards and serves to receive one end of the high-pressure line, which is formed by a substantially hollow cylindrical Press screw is pressed against the receiving funnel in a high pressure-tight manner, and that the sealing point is surrounded by an essentially hollow cylindrical insulating ring.
- the insulating ring reliably prevents an electrical shunt when the socket is welded on.
- the insulating ring ensures that no welding spatter can get to the sealing point when the bushing is welded on.
- a further special embodiment of the invention is characterized in that the insulating ring is preassembled in the socket and that the inner lateral surface of the insulating ring rests on the outer lateral surface of a projection in which the receiving funnel is formed. This ensures that the bushing is centered relative to the protrusion during assembly before welding.
- a further special embodiment of the invention is characterized in that the end of the high pressure line is spherical and that the inside diameter of the compression screw is larger than the outside diameter of the high pressure line. This enables the high-pressure line to be released from the socket. This has the advantage that any installation tolerances in the engine compartment can be compensated for.
- a further special embodiment of the invention is characterized in that the end face of the socket facing the tubular base body is chamfered inwards.
- the beveling facilitates access to the connection point between the socket and the tubular base body.
- Figure 2 is a view of a cross section through a high-pressure fuel accumulator according to a second
- High-pressure fuel accumulator comprises a tubular base body 1.
- a longitudinal bore 2 is used to store the high-pressure fuel.
- the transverse bore 3 opens outward into a receiving funnel 4.
- the receiving funnel 4 is conical and forms a sealing surface for a spherical end 5 of a high-pressure line 6.
- the spherical end 5 of the high-pressure line 6 merges into an area 7 with an enlarged outer diameter , Following the region 7 with an enlarged outer diameter, a pressure shoulder 8 is formed on the outside of the high-pressure line 6.
- the press screw 10 Located on the pressure shoulder 8 of the high pressure line 6 a depression 9 in contact, which is formed on the inner circumference of the end of a press screw 10 facing the tubular base body 1.
- the press screw 10 essentially has the shape of a hollow circular cylinder through which the high-pressure line 6 passes.
- the compression screw 10 is equipped with an external thread 11 which interacts with an internal thread 12 which is formed in a hollow cylindrical bush 13.
- a collar 14 is provided on the socket 13 at the end facing the tubular base body 1.
- a bevel 15 is formed on the end face of the bushing 13 facing the tubular base body 1.
- the bevel 15 is arranged approximately perpendicular to a depression 19 which is formed on the inner circumference of the bush 13.
- the connection between the socket 13 and the tubular base body 1 is made by a weld seam 16.
- the projection 17 has the shape of a cylinder on the outside, which is surrounded by an insulating ring 18.
- the insulating ring has the shape of a hollow circular cylinder which is fitted into the socket 13.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50108618T DE50108618D1 (en) | 2000-03-06 | 2001-03-05 | FUEL HIGH PRESSURE MEMORY |
JP2001565525A JP2003526048A (en) | 2000-03-06 | 2001-03-05 | Fuel high pressure accumulator |
EP01916898A EP1179135B1 (en) | 2000-03-06 | 2001-03-05 | High-pressure fuel accumulator |
US10/009,290 US6736431B2 (en) | 2000-03-06 | 2001-05-03 | High-pressure fuel accumulator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000110944 DE10010944A1 (en) | 2000-03-06 | 2000-03-06 | High-pressure fuel accumulator for common rail fuel injection system; has tubular base body welded to sleeve connected to high-pressure line and having collar facing base body |
DE10010944.6 | 2000-03-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001066934A1 true WO2001066934A1 (en) | 2001-09-13 |
Family
ID=7633747
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2001/000823 WO2001066934A1 (en) | 2000-03-06 | 2001-03-05 | High-pressure fuel accumulator |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1179135B1 (en) |
JP (1) | JP2003526048A (en) |
CN (1) | CN1196856C (en) |
DE (2) | DE10010944A1 (en) |
WO (1) | WO2001066934A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015518110A (en) * | 2012-06-04 | 2015-06-25 | ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Device for metering fuel |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10126617B4 (en) * | 2001-05-31 | 2005-05-25 | Siemens Ag | fuel supply |
EP1426609A1 (en) * | 2002-12-06 | 2004-06-09 | Wärtsilä Schweiz AG | Pressure accumulator for a Common Rail system |
EP1426607A1 (en) * | 2002-12-06 | 2004-06-09 | Wärtsilä Schweiz AG | Pressure accumulator for a Common Rail system |
JP4075838B2 (en) * | 2003-06-27 | 2008-04-16 | 株式会社デンソー | Piping joint device |
JP4357362B2 (en) * | 2004-05-19 | 2009-11-04 | 臼井国際産業株式会社 | Joint structure of branch connection for common rail |
JP4069913B2 (en) * | 2004-09-10 | 2008-04-02 | 株式会社デンソー | Joining member joining method and attachment stay joining method used in an accumulator fuel injection system |
JP2008202591A (en) * | 2007-01-25 | 2008-09-04 | Denso Corp | Common rail |
DE102010001880A1 (en) * | 2010-02-12 | 2011-08-18 | Robert Bosch GmbH, 70469 | Cylinder head for a high-pressure fuel pump |
EP2963323B1 (en) * | 2014-07-02 | 2017-12-27 | SchmitterGroup AG | Use of a pipe connector for conveying hydrogen gas and pipe connector with hydrogen gas |
CN105351131A (en) * | 2015-11-30 | 2016-02-24 | 重庆小康工业集团股份有限公司 | Engine high-pressure fuel pipe structure |
JP6973271B2 (en) * | 2018-04-26 | 2021-11-24 | トヨタ自動車株式会社 | Protector and protector manufacturing method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0751336A1 (en) * | 1994-12-08 | 1997-01-02 | Usui Kokusai Sangyo Kaisha Ltd. | Connecting construction of branch connecting body in fuel rail of high pressure |
DE19607521C1 (en) * | 1996-02-28 | 1997-04-10 | Juergen Dipl Ing Guido | High-pressure fuel pipe, for diesel engine with common-rail system |
JPH10169527A (en) * | 1996-12-07 | 1998-06-23 | Usui Internatl Ind Co Ltd | Common rail |
EP0866221A1 (en) | 1997-03-18 | 1998-09-23 | Poppe & Potthoff GmbH & Co. | Fuel distributor for a diesel engine |
-
2000
- 2000-03-06 DE DE2000110944 patent/DE10010944A1/en not_active Withdrawn
-
2001
- 2001-03-05 CN CN 01800376 patent/CN1196856C/en not_active Expired - Fee Related
- 2001-03-05 EP EP01916898A patent/EP1179135B1/en not_active Expired - Lifetime
- 2001-03-05 JP JP2001565525A patent/JP2003526048A/en active Pending
- 2001-03-05 WO PCT/DE2001/000823 patent/WO2001066934A1/en active IP Right Grant
- 2001-03-05 DE DE50108618T patent/DE50108618D1/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0751336A1 (en) * | 1994-12-08 | 1997-01-02 | Usui Kokusai Sangyo Kaisha Ltd. | Connecting construction of branch connecting body in fuel rail of high pressure |
DE19607521C1 (en) * | 1996-02-28 | 1997-04-10 | Juergen Dipl Ing Guido | High-pressure fuel pipe, for diesel engine with common-rail system |
JPH10169527A (en) * | 1996-12-07 | 1998-06-23 | Usui Internatl Ind Co Ltd | Common rail |
EP0866221A1 (en) | 1997-03-18 | 1998-09-23 | Poppe & Potthoff GmbH & Co. | Fuel distributor for a diesel engine |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 11 30 September 1998 (1998-09-30) * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015518110A (en) * | 2012-06-04 | 2015-06-25 | ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Device for metering fuel |
Also Published As
Publication number | Publication date |
---|---|
DE10010944A1 (en) | 2001-09-20 |
CN1196856C (en) | 2005-04-13 |
EP1179135A1 (en) | 2002-02-13 |
EP1179135B1 (en) | 2006-01-04 |
JP2003526048A (en) | 2003-09-02 |
CN1363015A (en) | 2002-08-07 |
DE50108618D1 (en) | 2006-03-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2001009506A1 (en) | High pressure fuel accumulator | |
EP1179135B1 (en) | High-pressure fuel accumulator | |
EP2010779B1 (en) | Device for securing high-pressure lines to a high pressure accumulator | |
EP2809941B1 (en) | Fuel distributor bar | |
DE19927145A1 (en) | High pressure connection for a fuel injection system for internal combustion engines | |
WO2001025616A1 (en) | Method for machining a high pressure fuel accumulator, high pressure fuel accumulator and connector branches for using said method | |
US6736431B2 (en) | High-pressure fuel accumulator | |
EP1114252B1 (en) | High pressure fuel accumulator with prestressed welded connecting socket for a fuel injection system of internal combustion engines | |
EP1442211B1 (en) | Method for producing a fuel accumulator line comprising a prestressed connection piece | |
EP1373711B1 (en) | Fuel injection valve | |
EP1114273A1 (en) | Connection and housing, especially a high-pressure fuel accumulator, with a connection that is welded on in a prestressed manner, for a fuel injection system for internal combustion engines | |
EP1434940B1 (en) | Injector | |
EP1117923A1 (en) | High-pressure fuel accumulator | |
WO2022048967A1 (en) | Device and method for welding a pot-shaped housing lid onto a housing body of a high-pressure fuel pump | |
DE10002365B4 (en) | Injection system for fuel injection systems | |
WO2022152624A1 (en) | Hydraulic accumulator | |
EP1126161B1 (en) | Injection device | |
DE10020506B4 (en) | Device for supplying fuel to injection valves of an internal combustion engine | |
WO2007033738A2 (en) | Fuel distributor | |
WO2004063557A1 (en) | Connector piece for high pressure screwed unions | |
WO2013000695A1 (en) | Fuel injector | |
DE20320869U1 (en) | Fuel injection valve has clamp nut opening internal diameter corresponding essentially to external diameter of second cylindrical section of valve body with peripheral groove in transition from second cylindrical section to contact surface | |
DE102014220645B4 (en) | Arrangement for a fuel delivery system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 01800376.1 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN JP US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2001916898 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2001 565525 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 2001916898 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10009290 Country of ref document: US |
|
WWG | Wipo information: grant in national office |
Ref document number: 2001916898 Country of ref document: EP |