WO2021187015A1 - Rampe d'injection directe d'essence - Google Patents

Rampe d'injection directe d'essence Download PDF

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Publication number
WO2021187015A1
WO2021187015A1 PCT/JP2021/006555 JP2021006555W WO2021187015A1 WO 2021187015 A1 WO2021187015 A1 WO 2021187015A1 JP 2021006555 W JP2021006555 W JP 2021006555W WO 2021187015 A1 WO2021187015 A1 WO 2021187015A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel rail
main body
injector cup
injector
rail main
Prior art date
Application number
PCT/JP2021/006555
Other languages
English (en)
Japanese (ja)
Inventor
洋行 西澤
Original Assignee
臼井国際産業株式会社
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 臼井国際産業株式会社 filed Critical 臼井国際産業株式会社
Priority to EP21770565.6A priority Critical patent/EP4102049A4/fr
Priority to CN202180021326.0A priority patent/CN115280011A/zh
Publication of WO2021187015A1 publication Critical patent/WO2021187015A1/fr

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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
    • 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
    • F02M55/02—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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/857—Mounting of fuel injection apparatus characterised by mounting fuel or common rail to engine

Definitions

  • the present invention relates to a gasoline direct injection rail provided with a fuel rail main body and an injector cup adapter.
  • Patent Document 1 it has already been known that an injector is connected to the main body of a fuel rail for a high-pressure injection internal combustion engine via a connecting component such as a bag nut.
  • a connecting component such as a bag nut.
  • the conventional fuel rail body as described above is lengthened to correspond to the distance from the fuel rail body (not shown) to the combustion chamber (32) as shown in FIG.
  • a method is conceivable in which a pipe connecting the injector cup and the rail body is connected and integrally formed, and an injector generally used conventionally is connected and fixed to the injector cup.
  • Japanese Unexamined Patent Publication No. 2010-7651 Japanese Unexamined Patent Publication No. 2010-7651
  • the length corresponds to the distance from the fuel rail body (not shown) provided at the upper part of the engine (31) to the combustion chamber (32) provided at the lower part of the engine (31).
  • the present invention is intended to solve the above-mentioned problems, and the fuel rail main body can be formed by hot forging, and the layout is highly flexible, from the fuel rail main body to the combustion chamber. Even if the distance is long, it is intended to obtain a fuel rail with a simple configuration and low cost.
  • the present invention solves the above-mentioned problems, and includes a fuel rail main body and an injector cup adapter formed separately from the fuel rail main body.
  • the fuel rail main body is made of hot forging.
  • the injector cup adapter is made by cutting, and the injector cup adapter and the fuel rail main body are connected and fixed in a state where the connection portion is sealed by an O ring.
  • the injector cup adapter and the fuel rail main body may be connected and fixed to the cylinder block of the engine by screwing with the connection portion sealed by an O-ring.
  • the fuel rail body and the injector cup adapter By forming the fuel rail body and the injector cup adapter separately as described above, only the fuel rail body can be manufactured by hot forging, so that it is possible to cope with a high fuel pressure of the engine. Even if the distance between the fuel rail body and the combustion chamber is long, the distance between the fuel rail body and the combustion chamber can be increased by making the length of the injector cup adapter long corresponding to the distance. It becomes possible to arrange the injector corresponding to. Therefore, it can be easily manufactured without incurring a high cost.
  • the fuel rail body may be arranged on the upper part of the engine.
  • the distance between the fuel rail main body and the combustion chamber becomes long.
  • the injector cup adapter having a length corresponding to the distance to the fuel rail body as in the present invention, the injector can be arranged at an appropriate position facing the combustion chamber.
  • the manufacturing cost of the entire fuel injection system can be kept low.
  • the fuel rail main body may be fixedly arranged on the upper part of the cylinder block of the engine, and the injector cup adapter may be arranged within the insertion interval formed in the cylinder block.
  • the fuel rail main body and the injector cup adapter by forming the fuel rail main body and the injector cup adapter separately, only the fuel rail main body can be manufactured by hot forging, so that the fuel rail can withstand high fuel pressure of the engine. Can be obtained. Even when the distance between the fuel rail body and the combustion chamber is long, by making the length of the injector cup adapter correspond to the distance, even when an injector that has been generally used in the past is used. Since the injector can be placed in an appropriate position, it is not necessary to use a particularly long injector, so the manufacturing cost of the entire fuel injection system can be kept low, and the fuel rail body can be manufactured. Can be made easy.
  • the rail body and the injector cup adapter are formed separately, so the position of the rail body can be finely adjusted according to the assembly error that occurs in the solid engine. Therefore, it is possible to contribute to the improvement of the assembling property and the relaxation of the dimensional accuracy at the time of finishing the fuel rail.
  • FIG. 5 is a cross-sectional view showing Example 1 of the present invention.
  • FIG. 6 is a conceptual diagram of the first embodiment in a state of being assembled to a cylinder block. The perspective view which shows the conventional example.
  • Example 1 of the present invention will be described below with reference to FIGS. 1 and 2.
  • (1) is a hot forged fuel rail main body, and the fuel rail main body (1) is formed in a long tubular shape having a fuel passage (2) inside. There is.
  • the strength of the fuel rail body (1) can be increased, so that the fuel pressure of the engine (11) will be increased in the future. You can get possible products.
  • the adapter insertion part (3) is integrally projected in the direction perpendicular to the above fuel passage (2).
  • the adapter insertion portion (3) is provided with a connection recess (4) for connecting the injector cup adapter (6) as shown in FIG. Further, the connection recess (4) and the fuel passage (2) communicate with each other via a communication passage (5).
  • the injector cup adapter (6) made by cutting is connected to this connection recess (4). That is, a connecting convex portion (7) for connecting to the fuel rail main body (1) is provided at one end of the injector cup adapter (6), and a connecting concave portion (7) for connecting one end of the injector (12) is provided at the other end. 8) is provided. Then, the connecting convex portion (7) of the injector cup adapter (6) is connected to the connecting concave portion (4) of the adapter insertion portion (3) via an O-ring (15).
  • connection portion (16) between the injector cup adapter (6) and the fuel rail body (1) is connected and fixed in a state of being sealed by the O-ring (15). Therefore, it is possible to prevent liquid leakage or the like at the connection portion (16) between the injector cup adapter (6) and the fuel rail main body (1).
  • a distribution interval for distributing fuel from the fuel passage (2) of the fuel rail main body (1) is provided between the connection convex portion (7) and the connection concave portion (4).
  • a screw fixing part (10) provided with a screw hole (not shown) is connected and arranged on the opposite side of the adapter insertion part (3) from the fuel rail body (1). Then, the case where the fuel rail body (1) and the injector cup adapter (6) formed as described above are assembled to the upper portion (17) of the engine (11) will be described.
  • the engine (11) Between the pair of cylinder blocks (13) constituting the above, an insertion interval (14) is provided so that the injector cup adapter (6) and the injector (12) can be inserted and arranged.
  • the fuel rail main body (1) is arranged above the cylinder block (13), and the injector cup adapter (6) assembled to the fuel rail main body (1) is inserted at the above insertion interval (14). ), And the base end of the injector (12) is inserted and placed in the connecting recess (8). Then, a screw (not shown) is inserted into the screw fixing portion (10) integrally provided on the fuel rail main body (1), and the fuel rail main body (1) is screw-fixed to the cylinder block (13).
  • the injector cup adapter (6) is formed to be long in correspondence with such a long distance from the fuel rail main body (1) to the combustion chamber.
  • the injector (33) is connected to the injector (12) having a general length that has been widely used in the past, and the injector cup adapter (6) is connected to the long injector cup adapter (6). It is possible to place the injector (12) in an appropriate position so that it faces the surface. Therefore, since it is not necessary to use a long injector (12) specially, the manufacturing cost of the entire fuel injection system can be kept low. Further, by forming the injector cup adapter (6) to be long as described above, the injector (12) is arranged at an appropriate position corresponding to the long distance from the fuel rail body (1) to the combustion chamber. Therefore, the production can be facilitated.
  • the injector cup adapter (6) is formed separately from the fuel rail main body (1) and the injector cup adapter (6) is formed by cutting, the injector is formed from the fuel rail main body (1). It is possible to easily adjust the dimensions with and from the distance to (12). In addition, the length of the injector cup adapter (6) can be adjusted appropriately according to the position of other parts assembled to the engine (11), so it is possible to increase the degree of freedom in layout. Become.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

La présente invention aborde le problème que représente la fourniture d'une rampe à carburant qui permet de former un corps principal de rampe à carburant par forgeage à chaud, lequel a un degré de liberté élevé en termes d'agencement, et qui est économe grâce à une configuration simple même en cas de distance accrue entre le corps principal de rampe à carburant et une chambre de combustion. Afin de résoudre le problème ci-dessus, la présente invention est pourvue d'un corps principal de rampe à carburant (1) et d'un adaptateur de coupelle d'injecteur (6) qui est formé séparément du corps principal de rampe à carburant (1), le corps principal de rampe à carburant (1) est produit par forgeage à chaud, l'adaptateur de coupelle d'injecteur (6) est produit par découpe, et l'adaptateur de coupelle d'injecteur (6) et le corps principal de rampe à carburant (1) sont accouplés et fixés à l'aide d'un joint (16) dont l'étanchéité est assurée par un joint torique (15).
PCT/JP2021/006555 2020-03-18 2021-02-22 Rampe d'injection directe d'essence WO2021187015A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21770565.6A EP4102049A4 (fr) 2020-03-18 2021-02-22 Rampe d'injection directe d'essence
CN202180021326.0A CN115280011A (zh) 2020-03-18 2021-02-22 汽油直喷轨

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020047812A JP2021148047A (ja) 2020-03-18 2020-03-18 ガソリン直噴レール
JP2020-047812 2020-03-18

Publications (1)

Publication Number Publication Date
WO2021187015A1 true WO2021187015A1 (fr) 2021-09-23

Family

ID=77771975

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2021/006555 WO2021187015A1 (fr) 2020-03-18 2021-02-22 Rampe d'injection directe d'essence

Country Status (4)

Country Link
EP (1) EP4102049A4 (fr)
JP (1) JP2021148047A (fr)
CN (1) CN115280011A (fr)
WO (1) WO2021187015A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09317606A (ja) * 1996-05-27 1997-12-09 Nissan Motor Co Ltd 直噴式内燃機関の燃料供給装置
JP2000249024A (ja) * 1999-02-26 2000-09-12 Keihin Corp エンジン用燃料噴射弁の取付け構造
JP2001355540A (ja) * 2000-04-26 2001-12-26 Ford Global Technol Inc 内燃機関の燃料噴射システム
JP2002070691A (ja) * 2000-08-31 2002-03-08 Otics Corp デリバリパイプ
JP2010007651A (ja) 2008-06-30 2010-01-14 Usui Kokusai Sangyo Kaisha Ltd 高圧直噴内燃機関用燃料レール及びその製造方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19853090A1 (de) * 1998-11-18 2000-05-25 Bosch Gmbh Robert Brennstoffeinspritzanlage
JP2001221127A (ja) * 2000-02-09 2001-08-17 Nissan Motor Co Ltd 内燃機関の燃料噴射装置
JP2003028031A (ja) * 2001-07-16 2003-01-29 Daihatsu Motor Co Ltd 多気筒内燃機関における燃料噴射弁の取付け装置
FR2852636B1 (fr) * 2003-03-19 2005-06-17 Peugeot Citroen Automobiles Sa Dispositif d'injection de carburant pour moteur a combustion interne, notamment d'un vehicule automobile.
JP2005069090A (ja) * 2003-08-25 2005-03-17 Mitsubishi Electric Corp 燃料噴射弁
JP4099668B2 (ja) * 2004-03-29 2008-06-11 株式会社デンソー 燃料噴射弁の取り付け構造およびそれに用いる固定部材
JP2010209738A (ja) * 2009-03-09 2010-09-24 Toyota Motor Corp 内燃機関の燃料噴射装置
JP5810726B2 (ja) * 2011-08-09 2015-11-11 マツダ株式会社 直噴式エンジン用フューエルレールアッシーの組付方法
EP2700805B1 (fr) * 2012-08-23 2016-06-29 Continental Automotive GmbH Pièce d'extension, soupape d'injection et ensemble de distribution de carburant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09317606A (ja) * 1996-05-27 1997-12-09 Nissan Motor Co Ltd 直噴式内燃機関の燃料供給装置
JP2000249024A (ja) * 1999-02-26 2000-09-12 Keihin Corp エンジン用燃料噴射弁の取付け構造
JP2001355540A (ja) * 2000-04-26 2001-12-26 Ford Global Technol Inc 内燃機関の燃料噴射システム
JP2002070691A (ja) * 2000-08-31 2002-03-08 Otics Corp デリバリパイプ
JP2010007651A (ja) 2008-06-30 2010-01-14 Usui Kokusai Sangyo Kaisha Ltd 高圧直噴内燃機関用燃料レール及びその製造方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4102049A4

Also Published As

Publication number Publication date
EP4102049A4 (fr) 2024-02-28
EP4102049A1 (fr) 2022-12-14
JP2021148047A (ja) 2021-09-27
CN115280011A (zh) 2022-11-01

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