CN1196856C - High-pressurre fuel accumualtor - Google Patents
High-pressurre fuel accumualtor Download PDFInfo
- Publication number
- CN1196856C CN1196856C CN 01800376 CN01800376A CN1196856C CN 1196856 C CN1196856 C CN 1196856C CN 01800376 CN01800376 CN 01800376 CN 01800376 A CN01800376 A CN 01800376A CN 1196856 C CN1196856 C CN 1196856C
- Authority
- CN
- China
- Prior art keywords
- high pressure
- sleeve pipe
- funnel
- pipe line
- sleeve
- 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 - Fee Related
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 239000011159 matrix material Substances 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 description 9
- 230000007704 transition Effects 0.000 description 2
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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
Abstract
The invention relates to a high-pressure fuel accumulator for use in a common rail fuel injection system in an internal combustion engine, comprising a tubular base body (1) having at least one sleeve (13) welded thereto for connection to a high-pressure line (6). In order to improve the quality and reliability of the high- pressure connection points, a collar (14) is embodied on the end of the sleeve (13) facing the base body (1).
Description
Technical field
The present invention relates to a kind of high-pressurre fuel accumualtor that is used for internal-combustion engine pressure-accumulating tube injection system, it has a tubular matrix, has welded at least one on it and has been used to connect the sleeve pipe of a high pressure pipe line.
Background technique
This high-pressurre fuel accumualtor for example is being illustrated among EP 0 866 221A1.In the pressure-accumulating tube injection system, down fuel to be sprayed sucking-off from a fuel tank is transported in the central high-pressurre fuel accumualtor the auxiliary of a prime oil feed pump under high-pressure service pump, the possible situation, described high-pressurre fuel accumualtor is also referred to as shared pressure-accumulating tube.Fuel conduit leads to the sparger that each and cylinder of internal combustion engine match from pressure-accumulating tube.These spargers are controlled according to operating variable of IC engine individually by the internal-combustion engine electronic circuit, so that fuel is sprayed in the firing chamber of internal-combustion engine.
US5,887,910A discloses a kind of branch road connection structure connecting that is used for the internal-combustion engine pressure-accumulating tube, wherein, main oil pipe is provided with the upright opening that penetrates tube wall, and an end of a branch road connection short tube is connected on this upright opening, and the end of high pressure pipe line is connected this branch road by a nut and connects on the other end of short tube, thus, being connected the short tube transition by a branch road between the main oil pipe of pressure-accumulating tube and high pressure pipe line connects.
Summary of the invention
The objective of the invention is, improve the q﹠r of the high-pressurre fuel accumualtor mesohigh joint area of the described type of beginning.In addition, high-pressurre fuel accumualtor of the present invention should and can be made by the cost lowland by simple structure.
According to the present invention, a kind of high-pressurre fuel accumualtor that is used for internal-combustion engine pressure-accumulating tube injection system is proposed, it has a tubular matrix, weld at least one on it and be used to connect the sleeve pipe of a high pressure pipe line, on the end of matrix, constructed a shaft shoulder at this sleeve pipe, wherein, hole of inner chamber pass-out from tubular matrix, it leads to a funnel-like contained structure, the end that described funnel-like contained structure enlarges and is used to hold high pressure pipe line to the outside, described end by a housing screw sealed high pressure that is hollow cylinder be pressed onto on this funnel-like contained structure, and the sealing position is surrounded by a spaghetti that is hollow cylinder.
At the high-pressurre fuel accumualtor that is used for internal-combustion engine pressure-accumulating tube injection system, have a tubular matrix, weld at least one on it and be used to connect the sleeve pipe of a high pressure pipe line, on the end of matrix, constructed a shaft shoulder at sleeve pipe.
The described shaft shoulder is used to introduce the required welding current of soldering sleeve.In the sleeve pipe that does not have the shaft shoulder usually, welding electrode is placed on the end that deviates from matrix of sleeve pipe.At this, the spatter thing can arrive the inside of sleeve pipe, and damage is arranged on screw thread there.Undesirable distortion takes place in the temperature when in addition, the meeting of the geometrical shape size of inside pipe casing is owing to welding.This shortcoming is by providing as the shaft shoulder of the present invention of welding electrode point of action and avoided.Another advantage of the present invention is that the described shaft shoulder has constituted the acting surface of a power, and sleeve pipe is pressed towards matrix when making welding by this power.In fact, this power also can be applied with by welding electrode.
Form of implementation of the present invention is, from hole of tubular matrix inner chamber pass-out, it leads to a funnel-like contained structure, this funnel-like contained structure outwards enlarges and is used to hold an end of high pressure pipe line, described end by a housing screw high pressure sealing that is essentially hollow cylinder be pressed on the funnel-like contained structure, the sealing position is surrounded by an insulating sleeve that is essentially hollow cylinder.The electricity shunting takes place when having prevented reliably that by this insulating sleeve welding from going up sleeve pipe.In addition, this insulating sleeve has guaranteed not have during sleeve pipe the spatter thing and has arrived the sealing position in welding.
Special form of implementation of the present invention is, described insulating sleeve is pre-assembled in the sleeve pipe, and the internal surface of insulating sleeve rests on the shell surface of a lug boss, constructed described funnel-like contained structure in this lug boss.Realized thus the centering of the pre-installed timing sleeve pipe of welding with respect to this lug boss.
Another special form of implementation of the present invention is, the end of high pressure pipe line is constructed to spherical, and the internal diameter of housing screw is greater than the external diameter of high pressure pipe line.Thus, make high pressure pipe line freely to locate, can compensate the possible installation tolerance in the internal-combustion engine chamber like this with respect to sleeve pipe.
Another special form of implementation of the present invention is that the end face towards tubular matrix of sleeve pipe is inwardly cut sth. askew.It is easier of connection part between sleeve pipe and the tubular matrix to make by this structure of cutting sth. askew.
Other advantage of the present invention, feature and details are partly provided by following specification, wherein describe two embodiments of the present invention in detail with reference to accompanying drawing.At this, all be the invention flesh and blood in each feature described in protection domain and the specification itself and their combination in any.
Description of drawings
Shown in the drawings:
Fig. 1 is a viewgraph of cross-section of the high-pressurre fuel accumualtor of the present invention's first form of implementation;
Fig. 2 is a viewgraph of cross-section of the high-pressurre fuel accumualtor of the present invention's second form of implementation.
Embodiment
The matrix 1 that comprises a tubulose at the high-pressurre fuel accumualtor shown in the viewgraph of cross-section of Fig. 1.In the matrix 1 of this tubulose, a vertical hole 2 is used to store the fuel that is under the high pressure.From a plurality of transverse holes of these vertical hole 2 pass-outs, in Fig. 1, only can see one of them transverse holes 3.This transverse holes 3 is outwards led to a funnel-like contained structure 4.This funnel-like contained structure 4 is constructed to conical, and has constituted the sealing surface of the end 5 of the spherical structure that is used for a high pressure pipe line 6.The spherical structure end 5 of high pressure pipe line 6 carries out the transition to a section 7 that has the external diameter of expansion.Be connected a pressure shoulder 8 that is configured on high pressure pipe line 6 outsides with this section 7 that has the external diameter of expansion.
On the pressure of high pressure pipe line 6 shoulder 8 by being equipped with a spot-facing 9, it be configured in a housing screw 10 on the inner circumference of the end of tubular matrix 1.This housing screw 10 has the configuration of hollow cylinder basically, and high pressure pipe line 6 passes this housing screw.Housing screw 10 is provided with an outside thread 11, it and internal thread 12 mating reactions that are configured on the hollow cylinder bodily form sleeve pipe 13.
On sleeve pipe 13, on the end of tubular matrix 1, be provided with a shaft shoulder 14 at it.On the end face of tubular matrix 1, constructed an oblique cutting part 15 at sleeve pipe 13.This oblique cutting part 15 is set to the spot-facing face 19 on the inner circumference that is configured in sleeve pipe 13 that is approximately perpendicular to, on the intersection point between oblique cutting part 15 and the spot-facing face 19, obtain one around arris, it is rounded and be placed on one and scabble on the structure 20, and the described structure construction that scabbles is on tubular matrix 1.Realize connecting by weld seam 16 between tubular matrix 1 at sleeve pipe 13.
At the center of scabbling structure 20, lug boss 17 of protuberance on tubular matrix 1.Be provided with a funnel-like contained structure 4 at the center of this lug boss 17.The outside of this lug boss 17 has cylindrical shape, and it is surrounded by an insulating sleeve 18.Described insulating sleeve has the hollow cylinder shape, and it is engaged in the sleeve pipe 13.
Claims (4)
1. high-pressurre fuel accumualtor that is used for internal-combustion engine pressure-accumulating tube injection system, it has a tubular matrix (1), weld at least one on it and be used to connect the sleeve pipe (13) of a high pressure pipe line (6), on the end of matrix (1), constructed a shaft shoulder (14) at this sleeve pipe (13), it is characterized in that, inner chamber (a 2) hole of pass-out (3) from tubular matrix (1), it leads to a funnel-like contained structure (4), the end (5) that described funnel-like contained structure enlarges and is used to hold high pressure pipe line (6) to the outside, described end by housing screw (a 10) sealed high pressure that is hollow cylinder be pressed onto on this funnel-like contained structure (4), and the sealing position is surrounded by a spaghetti (18) that is hollow cylinder.
2. according to the described high-pressurre fuel accumualtor of claim 1, it is characterized in that, insulating sleeve (18) is pre-assembled in the sleeve pipe (13), and the internal surface of insulating sleeve (18) rests on the shell surface of a lug boss (17), has constructed described funnel-like contained structure (4) in this lug boss.
3. according to claim 1 or 2 described high-pressurre fuel accumualtors, it is characterized in that the end (5) of high pressure pipe line (6) is constructed to sphere, the internal diameter of housing screw (10) is greater than the external diameter of high pressure pipe line (6).
4. according to claim 1 or 2 described high-pressurre fuel accumualtors, it is characterized in that the end face towards tubular matrix (1) of sleeve pipe (13) is inwardly cut sth. askew.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10010944.6 | 2000-03-06 | ||
| 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1363015A CN1363015A (en) | 2002-08-07 |
| CN1196856C true CN1196856C (en) | 2005-04-13 |
Family
ID=7633747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01800376 Expired - Fee Related CN1196856C (en) | 2000-03-06 | 2001-03-05 | High-pressurre fuel accumualtor |
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) |
Families Citing this family (12)
| 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 |
| DE102012209421A1 (en) * | 2012-06-04 | 2013-12-05 | Robert Bosch Gmbh | Device for metering fuel |
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3708124B2 (en) * | 1994-12-08 | 2005-10-19 | 臼井国際産業株式会社 | Connection structure of branch connection in high-pressure fuel rail |
| DE19607521C1 (en) * | 1996-02-28 | 1997-04-10 | Juergen Dipl Ing Guido | High-pressure fuel pipe, for diesel engine with common-rail system |
| JP3841370B2 (en) * | 1996-12-07 | 2006-11-01 | 臼井国際産業株式会社 | Common rail |
| DE19744762A1 (en) * | 1997-03-18 | 1998-10-01 | Poppe & Potthoff Gmbh & Co | Injection device for a diesel engine |
-
2000
- 2000-03-06 DE DE2000110944 patent/DE10010944A1/en not_active Withdrawn
-
2001
- 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 CN CN 01800376 patent/CN1196856C/en not_active Expired - Fee Related
- 2001-03-05 DE DE50108618T patent/DE50108618D1/en not_active Expired - Lifetime
- 2001-03-05 WO PCT/DE2001/000823 patent/WO2001066934A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| DE50108618D1 (en) | 2006-03-30 |
| JP2003526048A (en) | 2003-09-02 |
| EP1179135B1 (en) | 2006-01-04 |
| WO2001066934A1 (en) | 2001-09-13 |
| DE10010944A1 (en) | 2001-09-20 |
| EP1179135A1 (en) | 2002-02-13 |
| CN1363015A (en) | 2002-08-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050413 Termination date: 20150305 |
|
| EXPY | Termination of patent right or utility model |