WO2019058707A1 - 高圧直噴用のレール - Google Patents
高圧直噴用のレール Download PDFInfo
- Publication number
- WO2019058707A1 WO2019058707A1 PCT/JP2018/025304 JP2018025304W WO2019058707A1 WO 2019058707 A1 WO2019058707 A1 WO 2019058707A1 JP 2018025304 W JP2018025304 W JP 2018025304W WO 2019058707 A1 WO2019058707 A1 WO 2019058707A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rail
- joint member
- main body
- direct injection
- fuel
- 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.)
- Ceased
Links
Images
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
-
- 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
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/851—Mounting of fuel injection apparatus provisions for adjusting the angular, rotational or axial position of 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/856—Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa
Definitions
- the present invention addresses high pressure gasoline direct injection rails and relates to a high pressure direct injection rail manufactured by forging used at a high pressure such that the fuel pressure exceeds 50 MPa.
- the fuel pressure of a system for gasoline direct injection that is generally known conventionally is 20 MPa or less, and an injector holder, mounting boss, etc. are connected by brazing to a rail body provided with a fuel passage inside. It is common to use. And in this region of fuel pressure, it is possible to secure a sufficient pressure resistance by making the thickness of the rail body thick, so O-ring seal is sufficient for connection between the injector holder and the injector. It is possible. Therefore, it is not necessary to use particularly high strength materials.
- the bracket is also manufactured integrally with the rail main body, the arrangement angle between the bracket and the joint portion also has less freedom. Furthermore, when the rail body and the joint portion are integrally manufactured, in the case of forging, since the meat is moved from the straight base material to form the joint portion, the meat to be moved is insufficient when the distance is narrow. This makes it difficult to narrow the distance between the joint portions. Therefore, with the conventional rail as shown in Patent Document 1, it has been difficult to improve the layout property.
- the present invention is intended to solve the problems as described above, and even in the case of a forged rail for high pressure direct injection, the degree of freedom in the mounting angle and mounting interval of the joint member connected to the joint member such as an injector. In order to improve the layout property and to keep the strength of the joint portion high, it is possible to reduce the manufacturing cost.
- the present invention solves the problems as described above, and has a through-hole for connecting an axially extending fuel passage to the outside and is opened on a wall surface, and a rail main body manufactured by forging, and the rail main body A tubular joint member is manufactured separately and is fixed to the rail body at the position of the through hole, and enables the fuel to flow from the fuel passage through the through hole.
- the degree of freedom of the attachment interval and the attachment angle of the joint member to the rail body is increased, and thus the layout property can be improved.
- the material of the rail body as a general strength material and using the expensive high strength material only for the joint member, the strength at the joint portion can be maintained high, so the expensive high strength material can be obtained. It is not necessary to use the entire rail, and the manufacturing cost can be reduced.
- a tubular joint member may be fixedly arranged, which is manufactured separately from the rail main body and allows fuel to flow from the fuel passage through one end of the rail main body.
- the joint member may have a mechanical strength higher than that of the joint member connected to the joint member.
- the present invention manufactures the joint member separately from the forged rail body as described above, the degree of freedom of the mounting interval and the mounting angle of the joint member to the rail body is increased, and the layout property is improved. .
- a large cutting machine is required in the case of subjecting the joint portion to threading or the like. By making it into a body, it is not necessary to use a large cutting machine for processing into a joint member, so the processing operation can be made easy.
- FIG. 2 is a partial enlarged cross-sectional view taken along line AA of FIG.
- FIG. 2 is a perspective view of the first embodiment in a direction different from FIG. 1.
- FIG. 4 is a partial enlarged cross-sectional view of line BB in FIG. 3;
- FIG. 7 is a perspective view of a second embodiment.
- Example 1 of the present invention will be described below with reference to FIGS.
- (1) is a rail main body and is manufactured by forging.
- the pressure resistance of the rail body (1) itself can be enhanced, so that the fuel can be used in a high-pressure direct fuel injection system or the like.
- the rail body (1) is provided with a fuel passage (2) in the axial direction thereof, and through holes (4) are formed in a plurality of places in a wall surface (3).
- through holes (4) are formed in a plurality of places in a wall surface (3).
- an annular connection recess (7) having a diameter larger than the outer diameter of the joint member (6) described below is formed on the outer periphery of the through hole (4) formed as described above. There is. Further, on the periphery of the through hole (4) located at the center of the connection recess (7), a planar circular engagement recess (13) is provided.
- connection recess (7) a joint member (6) for manufacturing a separate body from the rail main body (1) and for connecting a joint member such as an injector is fixedly disposed.
- the mechanical strength of the joint member (6) is higher than that of the joint member.
- the joint member (6) is cylindrical, and the inside thereof is a fuel communication passage (11). Then, the proximal end portion (12) of the joint member (6) is reduced in diameter, and the proximal end portion (12) is inserted into the engaging recess (13) of the rail body (1) and fixed by brazing. Thus, the rail body (1) and the joint member (6) are connected and fixed. Further, as described above, by fixing the joint member (6) to the rail main body (1), as shown in FIGS. 2 and 4, the communication passage between the through hole (4) of the rail main body (1) and the joint member (6) (11) is in communication with each other.
- a joint member (14) for connecting a pipe (not shown) from the high pressure pump is provided separately from the rail main body (1) there is.
- the joint member (14) is cylindrical and has a communication passage (20) inside. Further, an annular projection (15) is provided in the circumferential direction so as to protrude on the outer periphery of the central portion in the longitudinal direction.
- the base end of the joint member (14) 16) Insert and place on the inner circumference of one end (17) of this rail body (1) until the annular projection (15) comes in contact with the open end face (18) of the rail body (1) It is fixed.
- the rail body (1) and the joint members (6) and (14) separately, it is possible to use high strength materials only for the joint members (6) and (14). In particular, the strength of the joint portion can be maintained high among the entire rails. Therefore, it is possible to cope with the high pressure of fuel, and it is possible to keep the cost low since it is not necessary to use the expensive high strength material for the entire rail.
- the joint member (6) manufactured separately from the rail main body (1) can be appropriately connected to the desired position of the rail main body (1), the joint member (6) to the rail main body (1) The degree of freedom of mounting intervals and mounting angles is increased, and the layout can be improved. Furthermore, in the case of a conventional forged rail in which a joint portion is integrally formed on the rail main body, a large cutting machine is required when threading processing etc. is applied to the joint portion.
- the joint members (6) and (14) can be assembled to the rail main body (1) after separately screwing the joint members (6) and (14) by separately manufacturing (14) Therefore, it is not necessary to use a large-sized cutting machine for processing to a joint member (6) (14), and processing operation can be made easy.
- a joint member (14) for connecting a high pressure pump is provided at one end of the rail main body (1) in the axial direction of the rail main body (1). As shown, in the direction perpendicular to the rail body (1), a joint member (14) for connecting a high pressure pump is provided.
- the fourth embodiment differs in that four components are provided in this embodiment. Except for the point and the portion of the joint member (14), the configuration of this embodiment is the same as that of the first embodiment.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
2 燃料通路
3 壁面
4 貫通孔
6、14 継手部材
17 一端
Claims (3)
- 軸方向に伸びる燃料通路と外部とを連通させる貫通孔を壁面に開口するとともに鍛造にて製作されたレール本体と、このレール本体とは別体に製作するとともに、上記貫通孔の位置にてレール本体に固定され上記燃料通路から貫通孔を通じて燃料を流通可能とする筒状の継手部材とを備えたことを特徴とする高圧直噴用のレール。
- レール本体の一端には、このレール本体とは別体に製作するとともに、燃料通路からレール本体の一端を通じて燃料が流通可能とする筒状の継手部材を固定配置したことを特徴とする請求項1の高圧直噴用のレール。
- 継手部材は、この継手部材に接続する被継手部材よりも機械的強度が高いことを特徴とする請求項1、または2の高圧直噴用のレール。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16/645,791 US11585304B2 (en) | 2017-09-19 | 2018-07-04 | Rail for high-pressure direct injection |
| EP18858783.6A EP3647583A4 (en) | 2017-09-19 | 2018-07-04 | HIGH PRESSURE DIRECT INJECTION RAMP |
| KR1020207007655A KR20200039772A (ko) | 2017-09-19 | 2018-07-04 | 고압 직분사용의 레일 |
| CN201880059321.5A CN111094738B (zh) | 2017-09-19 | 2018-07-04 | 高压直喷用轨 |
| KR1020227003900A KR102533575B1 (ko) | 2017-09-19 | 2018-07-04 | 고압 직분사용의 레일 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017178657A JP2019052616A (ja) | 2017-09-19 | 2017-09-19 | 高圧直噴用のレール |
| JP2017-178657 | 2017-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019058707A1 true WO2019058707A1 (ja) | 2019-03-28 |
Family
ID=65810224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2018/025304 Ceased WO2019058707A1 (ja) | 2017-09-19 | 2018-07-04 | 高圧直噴用のレール |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US11585304B2 (ja) |
| EP (1) | EP3647583A4 (ja) |
| JP (1) | JP2019052616A (ja) |
| KR (2) | KR102533575B1 (ja) |
| CN (1) | CN111094738B (ja) |
| WO (1) | WO2019058707A1 (ja) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022012701A (ja) * | 2020-07-02 | 2022-01-17 | 臼井国際産業株式会社 | ガソリン直噴燃料レール |
| DE102020213168A1 (de) | 2020-10-19 | 2022-04-21 | Robert Bosch Gesellschaft mit beschränkter Haftung | Fluidverteiler für eine Einspritzanlage und Einspritzanlage für gemischverdichtende, fremdgezündete Brennkraftmaschinen |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006233964A (ja) * | 2005-01-28 | 2006-09-07 | Usui Kokusai Sangyo Kaisha Ltd | ディーゼルエンジン用コモンレール |
| JP2009524761A (ja) * | 2006-01-26 | 2009-07-02 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 分配装置ブロックを組み込まれた高圧アキュムレータ装置 |
| JP2010216431A (ja) * | 2009-03-18 | 2010-09-30 | Denso Corp | コモンレール |
| WO2016042897A1 (ja) | 2014-09-17 | 2016-03-24 | 日立オートモティブシステムズ株式会社 | 燃料レール |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08193554A (ja) * | 1995-01-17 | 1996-07-30 | Keihin Seiki Mfg Co Ltd | 内燃機関における燃料供給装置 |
| DE19607521C1 (de) * | 1996-02-28 | 1997-04-10 | Juergen Dipl Ing Guido | Kraftstoff-Verteilerrohr |
| JPH09280459A (ja) * | 1996-04-17 | 1997-10-31 | Usui Internatl Ind Co Ltd | コモンレールにおける分岐接続体接続用分岐継手の固定構造およびその成形方法 |
| DE19640480B4 (de) * | 1996-09-30 | 2004-04-22 | Robert Bosch Gmbh | Kraftstoffhochdruckspeicher |
| DE19933256A1 (de) * | 1999-07-15 | 2001-01-25 | Bosch Gmbh Robert | Anschlussstutzen und Gehäuse, insbesondere Kraftstoffhochdruckspeicher, mit vorgespannt angeschweißtem Anschlussstutzen für ein Kraftstoffeinspritzsystem für Brennkraftmaschinen |
| JP2004027916A (ja) * | 2002-06-24 | 2004-01-29 | Usui Kokusai Sangyo Kaisha Ltd | 高圧燃料レールにおける分岐接続体の接続構造 |
| JP4438450B2 (ja) * | 2003-04-07 | 2010-03-24 | 株式会社デンソー | 配管継手装置およびその組付方法 |
| JP2005264883A (ja) * | 2004-03-19 | 2005-09-29 | Usui Kokusai Sangyo Kaisha Ltd | 高圧燃料蓄圧容器の継手構造 |
| CN101275525B (zh) * | 2007-03-31 | 2012-06-27 | 奇瑞汽车股份有限公司 | 一种汽油机高压油轨 |
| JP5510992B2 (ja) * | 2008-06-30 | 2014-06-04 | 臼井国際産業株式会社 | 高圧直噴内燃機関用燃料レール及びその製造方法 |
| DE102010018615A1 (de) * | 2010-04-28 | 2011-11-03 | Audi Ag | Kraftstoffzufuhrvorrichtung sowie Verfahren zum Herstellen einer solchen Kraftstoffzufuhrvorrichtung |
| EP3211207A4 (en) * | 2014-10-23 | 2018-05-16 | Hitachi Automotive Systems, Ltd. | Fuel rail |
| JP6649677B2 (ja) * | 2014-11-10 | 2020-02-19 | 臼井国際産業株式会社 | ガソリン直噴エンジン用燃料レール |
| US10208723B2 (en) * | 2016-05-25 | 2019-02-19 | Hi-Vol Products | Threaded fuel rails |
-
2017
- 2017-09-19 JP JP2017178657A patent/JP2019052616A/ja active Pending
-
2018
- 2018-07-04 KR KR1020227003900A patent/KR102533575B1/ko active Active
- 2018-07-04 KR KR1020207007655A patent/KR20200039772A/ko not_active Ceased
- 2018-07-04 US US16/645,791 patent/US11585304B2/en active Active
- 2018-07-04 EP EP18858783.6A patent/EP3647583A4/en not_active Withdrawn
- 2018-07-04 WO PCT/JP2018/025304 patent/WO2019058707A1/ja not_active Ceased
- 2018-07-04 CN CN201880059321.5A patent/CN111094738B/zh not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006233964A (ja) * | 2005-01-28 | 2006-09-07 | Usui Kokusai Sangyo Kaisha Ltd | ディーゼルエンジン用コモンレール |
| JP2009524761A (ja) * | 2006-01-26 | 2009-07-02 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 分配装置ブロックを組み込まれた高圧アキュムレータ装置 |
| JP2010216431A (ja) * | 2009-03-18 | 2010-09-30 | Denso Corp | コモンレール |
| WO2016042897A1 (ja) | 2014-09-17 | 2016-03-24 | 日立オートモティブシステムズ株式会社 | 燃料レール |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3647583A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20220019854A (ko) | 2022-02-17 |
| US20200271079A1 (en) | 2020-08-27 |
| EP3647583A1 (en) | 2020-05-06 |
| US11585304B2 (en) | 2023-02-21 |
| KR102533575B1 (ko) | 2023-05-18 |
| CN111094738A (zh) | 2020-05-01 |
| KR20200039772A (ko) | 2020-04-16 |
| EP3647583A4 (en) | 2021-03-03 |
| CN111094738B (zh) | 2022-03-25 |
| JP2019052616A (ja) | 2019-04-04 |
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