WO2020158076A1 - Rampe d'injection directe d'essence - Google Patents

Rampe d'injection directe d'essence Download PDF

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Publication number
WO2020158076A1
WO2020158076A1 PCT/JP2019/041854 JP2019041854W WO2020158076A1 WO 2020158076 A1 WO2020158076 A1 WO 2020158076A1 JP 2019041854 W JP2019041854 W JP 2019041854W WO 2020158076 A1 WO2020158076 A1 WO 2020158076A1
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WO
WIPO (PCT)
Prior art keywords
rail
rail body
outer peripheral
peripheral surface
hole
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
Application number
PCT/JP2019/041854
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English (en)
Japanese (ja)
Inventor
洋行 西澤
秀司 鈴木
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.)
Usui Co Ltd
Original Assignee
Usui Co Ltd
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 Usui Co Ltd filed Critical Usui Co Ltd
Publication of WO2020158076A1 publication Critical patent/WO2020158076A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • 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

Definitions

  • the present invention relates to a gasoline direct injection rail equipped with a rail body and a connecting member.
  • Patent Document 1 a plurality of through holes (32) for communicating the inside and the outside of the rail body (31) are formed in the wall surface (35) of the cylindrical rail body (31).
  • a gasoline direct injection rail with a through-hole formed at a point is already known.
  • a connecting member (33) such as an injector holder is brazed and fixed, and the inside of the rail body (31) and the connecting member (33) are penetrated through the through hole (32). They are in communication with each other.
  • the conventional rail body (31) has a tubular shape as shown in Patent Document 1 and FIGS. 5 and 6, the rail body (of the connecting member (33) to be assembled to the rail body (31) (
  • the connection surface with 31) must be a curved surface (34) which is concavely curved so as to make surface contact with the rail body (31) as shown in the cited document 1 and FIG. 7.
  • a tubular portion for inserting the curved surface (34) into the through hole (32) a tubular portion is formed in the connection member (33), and the tubular portion is formed. It was difficult to insert the through-hole (32) so as to prevent stress concentration on the through-hole (32).
  • the present invention is intended to solve the above-mentioned problems, and the shape of the rail main body and the connecting member is changed to a through hole as a shape in which the tubular portion of the connecting member can be inserted into the through hole of the rail main body. This is intended to prevent the stress concentration of and to improve the pressure resistance.
  • the present invention has solved the above-mentioned problems, and has a rail having a quadrangular outer peripheral sectional shape and a circular inner peripheral sectional shape, and through holes penetrating the outer peripheral surface and the inner peripheral surface formed at a plurality of positions.
  • a main body and a flat surface capable of making surface contact with the outer peripheral surface of the rail main body; and a connecting member having a cylindrical portion projectingly inserted into the through hole of the rail main body on the flat surface.
  • the flat rail surface is brought into surface contact with the outer circumferential surface of the rail body, the tubular portion is passed through the through hole of the rail body, and the tip of the tubular portion is projected from the inner circumferential surface of the rail body.
  • a connecting member are assembled together.
  • the connecting member can be assembled to the rail body by arranging the tubular portion of the connecting member in the through hole of the rail body, it is possible to prevent concentration of stress due to the high-voltage system in the through hole. It is possible to prevent damage to the main body.
  • the rail body is formed by drawing after drawing, or without drawing, and further cut on the inner peripheral surface. Alternatively, it may be formed only by drawing.
  • the rail body may have the outer peripheral surface subjected to surface cutting processing.
  • the outer peripheral shape of the rail main body cross section can be easily formed into a quadrangle.
  • the contact surface of the connecting member assembled to the rail main body with the rail main body can be a flat surface. Therefore, it is possible to form a flat surface on the connecting member and to project the cylindrical portion on the flat surface. Therefore, by disposing the tubular portion of the connecting member through the through hole of the rail body, it is possible to prevent the stress from being concentrated in the through hole by the high-voltage system.
  • the outer peripheral cross-sectional shape of the rail main body square and the inner peripheral cross-sectional shape circular, it is possible to improve structural strength as compared with the conventional rail main body having a circular outer peripheral and inner peripheral sectional shape. .. Therefore, it is possible to prevent the wall surface of the rail body from being deformed when the internal pressure is applied to the rail body. Therefore, it is not necessary to excessively increase the rigidity of the bracket for preventing the deformation of the rail body, and the bracket can be simplified, so that the manufacturing cost can be kept low.
  • Sectional drawing which shows Example 1 of this invention.
  • 3 is a cross-sectional view of the rail body shown in Embodiment 1.
  • FIG. 3 is a perspective view of a connection member shown in Embodiment 1.
  • FIG. The partial expanded sectional view of FIG. Sectional drawing which shows a prior art example.
  • the partial expanded sectional view of FIG. The perspective view which shows the connection member of a prior art example.
  • (1) is a rail main body, which is formed in a long tubular shape, and has an outer peripheral sectional shape of a quadrangle and an inner peripheral sectional shape of a circular shape as shown in FIG.
  • the structural strength is improved as compared with the conventional case where the outer peripheral and inner peripheral cross-sectional shapes are circular. Therefore, the effect of suppressing the deformation of the rail body (1) that occurs when the internal pressure is applied can be further enhanced.
  • the wall surface (4) of the rail body (1) has through holes (5) for communicating the inner peripheral surface (3) and the outer peripheral surface (2) of the rail body (1). ) Are provided in three places. Further, end caps (6) are provided at both ends of the rail body (1).
  • this rail body (1) is formed by full cutting, and the inner peripheral surface (3) and outer peripheral surface (2) are also cut.
  • the rail main body (1) is formed by full cutting in this embodiment, the present invention is not limited to this in other different embodiments.
  • the cutting process may be applied only to the peripheral surface as the final step, or the drawing may be performed only by the drawing process.
  • the connecting member (8) as shown in FIG. 3 is assembled to the through hole (5) formed as described above.
  • the connecting member (8) has a substantially cylindrical shape with a flat surface (10) formed at one end, and a cylindrical portion (11) is provided so as to project from the central portion of the flat surface (10).
  • the tubular portion (11) of the connecting member (8) formed as described above is inserted into the through hole (5) of the rail body (1) and is connected to the rail body (1). Both are assembled by brazing the member (8).
  • the outer peripheral cross-sectional shape of the rail main body (1) is a quadrangle as described above, the upper surface of the connecting member (8) to be assembled in surface contact with the rail main body (1) is made flat, On the flat surface (10), the tubular portion (11) that can penetrate the through hole (5) provided in the rail body (1) can be easily formed in a protruding manner.
  • the tip of the tubular portion (11) is The height is set to project from the inner peripheral surface of the rail body (1). Therefore, when the connecting member (8) is assembled to the rail body (1), the tubular portion (11) projects inward from the inner peripheral surface (3) of the rail body (1) as shown in FIG. It will be placed in the state of being.
  • the gasoline direct injection rail of the present embodiment formed as described above and the rail main body (31) having the same inner diameter as the rail main body (1) of the present embodiment, the conventional gasoline shown in FIGS.
  • CAE analysis is performed on the stress generation situation when internal pressure is applied, and in the vicinity of the through holes (5) (32) of each rail body (1) (31) when internal pressure is applied. Simulation analysis was performed on the generated stress.

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

L'invention concerne un corps de rampe et un élément de raccordement présentant une forme qui permet à une partie cylindrique de l'élément de raccordement d'être insérée dans un trou de pénétration du corps de rampe pour empêcher la concentration des contraintes dans le trou de pénétration et améliorer la résistance à la pression. La solution selon l'invention porte sur une rampe d'injection directe d'essence qui est pourvue : d'un corps de rampe 1 présentant une section transversale périphérique externe en forme de quadrilatère et une section transversale périphérique interne en forme de cercle, et qui comporte un trou de pénétration 5 pénétrant dans une surface périphérique externe 2 et une surface périphérique interne 3 au niveau d'une pluralité d'emplacements de celui-ci ; et d'un élément de raccordement 8 présentant une surface plate 10 pouvant être mise en contact de surface avec la surface périphérique externe 2 du corps de rampe 1 et comportant une partie cylindrique 11 faisant saillie sur la surface plate 10 de façon à être insérée dans le trou de pénétration 5 du corps de rampe 1. En amenant la surface plate 10 de l'élément de raccordement 8 en contact de surface avec la surface périphérique externe 2 du corps de rampe 1 et la partie cylindrique 11 à pénétrer dans le trou de pénétration 5 du corps de rampe 1, le corps de rampe 1 et l'élément de raccordement 8 sont assemblés avec la pointe de la partie cylindrique 11 faisant saillie hors de la surface périphérique interne 3 du corps de rampe 1.
PCT/JP2019/041854 2019-01-31 2019-10-25 Rampe d'injection directe d'essence Ceased WO2020158076A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-015072 2019-01-31
JP2019015072A JP7465628B2 (ja) 2019-01-31 2019-01-31 ガソリン直噴レール

Publications (1)

Publication Number Publication Date
WO2020158076A1 true WO2020158076A1 (fr) 2020-08-06

Family

ID=71840554

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/041854 Ceased WO2020158076A1 (fr) 2019-01-31 2019-10-25 Rampe d'injection directe d'essence

Country Status (2)

Country Link
JP (1) JP7465628B2 (fr)
WO (1) WO2020158076A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0378969U (fr) * 1989-12-02 1991-08-12
JP2005147075A (ja) * 2003-11-19 2005-06-09 Usui Kokusai Sangyo Kaisha Ltd フューエルデリバリパイプ
JP2007021508A (ja) * 2005-07-12 2007-02-01 Usui Kokusai Sangyo Kaisha Ltd 燃料インジェクター用ホルダー及びその製造方法
JP2011220262A (ja) * 2010-04-12 2011-11-04 Otics Corp フューエルデリバリパイプ
JP2012251462A (ja) * 2011-06-01 2012-12-20 Otics Corp フューエルデリバリパイプ及びその製造方法。
JP2013245561A (ja) * 2012-05-23 2013-12-09 Otics Corp 燃料分配管の製造方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003120466A (ja) 2002-10-22 2003-04-23 Sanoh Industrial Co Ltd 燃料噴射ノズル用コネクター及びその製造方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0378969U (fr) * 1989-12-02 1991-08-12
JP2005147075A (ja) * 2003-11-19 2005-06-09 Usui Kokusai Sangyo Kaisha Ltd フューエルデリバリパイプ
JP2007021508A (ja) * 2005-07-12 2007-02-01 Usui Kokusai Sangyo Kaisha Ltd 燃料インジェクター用ホルダー及びその製造方法
JP2011220262A (ja) * 2010-04-12 2011-11-04 Otics Corp フューエルデリバリパイプ
JP2012251462A (ja) * 2011-06-01 2012-12-20 Otics Corp フューエルデリバリパイプ及びその製造方法。
JP2013245561A (ja) * 2012-05-23 2013-12-09 Otics Corp 燃料分配管の製造方法

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Publication number Publication date
JP2020122438A (ja) 2020-08-13
JP7465628B2 (ja) 2024-04-11

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