JP2007170257A - Fuel supply structure in multiple throttle body - Google Patents

Fuel supply structure in multiple throttle body Download PDF

Info

Publication number
JP2007170257A
JP2007170257A JP2005368171A JP2005368171A JP2007170257A JP 2007170257 A JP2007170257 A JP 2007170257A JP 2005368171 A JP2005368171 A JP 2005368171A JP 2005368171 A JP2005368171 A JP 2005368171A JP 2007170257 A JP2007170257 A JP 2007170257A
Authority
JP
Japan
Prior art keywords
fuel
fuel distribution
distribution pipe
positioning
groove
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.)
Pending
Application number
JP2005368171A
Other languages
Japanese (ja)
Inventor
Hiroshi Kikuchi
博 菊池
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.)
Keihin Corp
Original Assignee
Keihin Corp
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 Keihin Corp filed Critical Keihin Corp
Priority to JP2005368171A priority Critical patent/JP2007170257A/en
Publication of JP2007170257A publication Critical patent/JP2007170257A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Fuel-Injection Apparatus (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide fuel supply structure, in which the sizes of a fuel distribution pipe and a T-type fuel joint are reduced, and an opening position of a fuel introducing passage of the T-type fuel joint is formed at a fixed position. <P>SOLUTION: One end side of a cylinder part 2 of the T-type fuel joint 1 is provided with a first insertion/connection part 5 having a first seal ring groove 9, the other end side thereof is provided with a second insertion/connection part 6 having a second seal ring groove 10, and outer circumferences of the one end side and the other end side of the cylinder part 2 are respectively provided with a first positioning projection part 7 and a second positioning projection part 8 which are symmetrical and different in shape. A first insertion hole 13 is opened to an opposed face 11a of the first fuel distribution pipe 11, a first positioning recess groove 14 and a second positioning recess groove 15 are formed in the opposed face 11a. A second insertion hole 22 is opened to an opposed face 20a of the second fuel distribution pipe 20, and a first positioning recess groove 23 and a second positioning recess groove 24 are formed in the opposed face 20a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、燃料ポンプによって昇圧された燃料をスロットルボデーに固着された燃料分配管へ供給し、燃料分配管に取着された燃料噴射弁よりスロットルボデーの吸気通路内へ制御された燃料が噴射供給される燃料噴射装置に関し、そのうち特にスロットルボデーが側方に複数配置され、隣設されたスロットルボデーにそれぞれ取着される燃料分配管の対向面の間にＴ型燃料ジョイントが挿入配置され、Ｔ型燃料ジョイントの燃料導入路より内部の燃料供給路に向けて供給された燃料を、それぞれの燃料分配管へ供給する多連スロットルボデーにおける燃料供給構造に関する。   In the present invention, fuel boosted by a fuel pump is supplied to a fuel distribution pipe fixed to a throttle body, and controlled fuel is injected into an intake passage of the throttle body from a fuel injection valve attached to the fuel distribution pipe. Regarding the fuel injection device to be supplied, among them, in particular, a plurality of throttle bodies are arranged on the side, and T-type fuel joints are inserted and arranged between the opposing surfaces of the fuel distribution pipes attached to the adjacent throttle bodies, The present invention relates to a fuel supply structure in a multiple throttle body that supplies fuel supplied from a fuel introduction path of a T-type fuel joint toward an internal fuel supply path to each fuel distribution pipe.

従来の多連スロットルボデーにおける燃料供給構造は図９に示される。
図により説明すると、Ｔ１は内部に吸気通路５０が貫通して穿設された一方のスロットルボデーであり、吸気通路５０は、一方のスロットルボデーＴ１に回転自在に支持された第１絞り弁軸５１に螺着された第１絞り弁５２によって開閉される。
Ｊは、一方のスロットルボデーＴ１と、第１のスロットルボデーＴ１に固着された第１燃料分配管５３とによって挟持された燃料噴射弁であり、燃料噴射弁Ｊの先端部Ｊａは一方のスロットルボデーＴ１に穿設され、吸気通路５０に向かって開口する先端ガイド孔５４に挿入され、後端部Ｊｂは、第１燃料分配管５３に穿設され、燃料分配路５７に連結された後端ガイド孔５５に挿入され、クッション部材５６を介して挟持される。
Ｔ２は内部に吸気通路５０が貫通して穿設された他方のスロットルボデーであり、吸気通路５０は、他方のスロットルボデーＴ２に回転自在に支持された第２絞り弁軸６０に螺着された第２絞り弁６１によって開閉される。
Ｊは、他方のスロットルボデーＴ２と、他方のスロットルボデーＴ２に固着された第２燃料分配管６２とによって挟持された燃料噴射弁であり、燃料噴射弁Ｊの先端部Ｊａは他方のスロットルボデーＴ２に穿設され、吸気通路５０に向かって開口する先端ガイド孔６３に挿入され、後端部Ｊｂは、第２燃料分配管６２に穿設され、燃料分配路６４に連結された後端ガイド孔６５に挿入され、クッション部材６６を介して挟持される。
７０はＴ型燃料ジョイントであり、以下によって構成される。
図１０、図１１を用いて説明する。図１０はＴ型燃料ジョイントの正面図、図１１は図１０の右側面図、である。
７１は断面が正六角形状をなし、側方にのびる六角筒部であり、一端７１ａから一方（図において左方）に向けて円筒状をなし、六角筒部７１より小径なる第１挿入接続管部７２が連設され、他端７１ｂから他方（図において右方）に向けて円筒状をなし、六角筒部７１より小径をなす第２挿入接続管部７３が連設され、第１挿入接続管部７２には第１シールリング溝７４が穿設され、第２挿入接続管部７３には第２シールリング溝７５が穿設される。
又、第１挿入接続管部７２の一端７２ａから第２挿入接続管部７３の他端７３ａに向けて燃料供給路７６が貫通して穿設され、更に六角筒部７１には燃料供給路７６に連なる燃料導入路７７が立設される。
次に、前述した第１燃料分配管５３について図１２、図１３により説明する。
図１２は第１燃料分配管５３の対向面５３ａ近傍の要部縦断面図。図１３は図１２の右側面図である。
５８は第１燃料分配管５３の対向面５３ａから燃料分配路５７側の内方（図１２において左方）に向かって凹設された断面正六角形をなす位置決め凹溝であり、Ｔ型燃料ジョイント７０の六角筒部７１が挿入され、且つ六角筒部７１の回転が阻止されるよう六角筒部７１よりわずかに大形状をなす。
又、位置決め凹溝５８の底部５８ａから燃料分配路５７に向けて、Ｔ型燃料ジョイント７０の第１接続挿入管部７２が挿入される第１挿入孔５９が連設されるもので、この第１挿入孔５９の径は、第１接続挿入管部７２の外径よりわずかに大径をなす。
又、位置決め凹溝５８の外周部には、大径鍔部５３ｂが形成されるもので、この大径鍔部５３ｂの径は、第１燃料分配管５３の径より大径に形成される。
尚、第２燃料分配管６２の対向面６２ａから燃料分配路６４側の内方に向かって断面正六角形をなす位置決め凹溝８０が凹設され、又位置決め凹溝８０の底部８０ａから燃料分配路６４に向けて第２挿入接続管部７３を挿入する第２挿入孔８１が連設され、更に位置決め凹溝８０の外周部には第２燃料分配管６２の径より大径をなす大径鍔部６２ｂが形成される。（かかる第２燃料分配管６２は図９に示される。） A fuel supply structure in a conventional multiple throttle body is shown in FIG.
Referring to the drawing, T1 is one throttle body having an intake passage 50 formed therethrough, and the intake passage 50 is a first throttle valve shaft 51 rotatably supported by one throttle body T1. It is opened and closed by a first throttle valve 52 that is screwed onto the first throttle valve 52.
J is a fuel injection valve sandwiched between one throttle body T1 and a first fuel distribution pipe 53 fixed to the first throttle body T1, and the tip portion Ja of the fuel injection valve J is one throttle body. A rear end guide drilled in T1 and inserted into a front end guide hole 54 opening toward the intake passage 50, and a rear end portion Jb formed in the first fuel distribution pipe 53 and connected to the fuel distribution path 57. It is inserted into the hole 55 and clamped via the cushion member 56.
T2 is the other throttle body in which the intake passage 50 penetrates, and the intake passage 50 is screwed to the second throttle valve shaft 60 rotatably supported by the other throttle body T2. The second throttle valve 61 is opened and closed.
J is a fuel injection valve sandwiched between the other throttle body T2 and the second fuel distribution pipe 62 fixed to the other throttle body T2. The tip portion Ja of the fuel injection valve J is the other throttle body T2. The rear end portion Jb is formed in the second fuel distribution pipe 62 and is connected to the fuel distribution path 64. The rear end guide hole 63 is inserted into the front end guide hole 63 opened toward the intake passage 50. It is inserted into 65 and clamped via a cushion member 66.
Reference numeral 70 denotes a T-type fuel joint, which is configured as follows.
This will be described with reference to FIGS. FIG. 10 is a front view of the T-type fuel joint, and FIG. 11 is a right side view of FIG.
Reference numeral 71 denotes a hexagonal cylindrical portion having a regular hexagonal cross section, extending sideways, having a cylindrical shape from one end 71a toward one side (left side in the figure), and having a smaller diameter than the hexagonal cylindrical portion 71. The second insertion connecting pipe portion 73 having a diameter smaller than that of the hexagonal cylindrical portion 71 is continuously provided, and the first insertion connection is formed. A first seal ring groove 74 is formed in the tube portion 72, and a second seal ring groove 75 is formed in the second insertion connection tube portion 73.
In addition, a fuel supply path 76 penetrates from one end 72 a of the first insertion connection pipe portion 72 to the other end 73 a of the second insertion connection pipe section 73, and further, a fuel supply path 76 passes through the hexagonal cylinder portion 71. A fuel introduction path 77 is established in a row.
Next, the first fuel distribution pipe 53 will be described with reference to FIGS.
FIG. 12 is a longitudinal sectional view of a main part in the vicinity of the facing surface 53 a of the first fuel distribution pipe 53. FIG. 13 is a right side view of FIG.
58 is a positioning concave groove having a regular hexagonal cross section that is recessed from the facing surface 53a of the first fuel distribution pipe 53 toward the inside (left side in FIG. 12) on the fuel distribution path 57 side. 70 hexagonal cylinder part 71 is inserted, and it is slightly larger than hexagonal cylinder part 71 so that rotation of hexagonal cylinder part 71 is prevented.
In addition, a first insertion hole 59 into which the first connection insertion pipe portion 72 of the T-type fuel joint 70 is inserted is continuously provided from the bottom 58a of the positioning groove 58 toward the fuel distribution path 57. The diameter of the first insertion hole 59 is slightly larger than the outer diameter of the first connection insertion pipe portion 72.
A large diameter flange 53 b is formed on the outer peripheral portion of the positioning groove 58, and the diameter of the large diameter flange 53 b is larger than the diameter of the first fuel distribution pipe 53.
A positioning groove 80 having a regular hexagonal cross section is formed from the opposing surface 62a of the second fuel distribution pipe 62 toward the inside of the fuel distribution path 64, and the fuel distribution path is formed from the bottom 80a of the positioning groove 80. A second insertion hole 81 for inserting the second insertion connecting pipe 73 toward 64 is continuously provided, and a large-diameter rod having a diameter larger than the diameter of the second fuel distribution pipe 62 is formed on the outer periphery of the positioning groove 80. A portion 62b is formed. (The second fuel distribution pipe 62 is shown in FIG. 9).

そして、前記一方のスロットルボデーＴ１と他方のスロットルボデーＴ２とは側方に隣設配置され、取付けステー８３によって相互に固定されて多連スロットルボデー（本実施例にあっては２連）が形成される。
又、一方のスロットルボデーＴ１の上方には、前記第１燃料分配管５３が図示されぬネジによって螺着固定されるもので、このとき燃料噴射弁Ｊの先端部Ｊａが一方のスロットルボデーＴ１の先端ガイド孔５４に挿入されるとともに後端部Ｊｂが第１燃料分配管５３の後端ガイド孔５５に挿入され、かかる状態において燃料噴射弁Ｊは、一方のスロットルボデーＴ１と第１燃料分配管５３との間にクッション部材５６を介して挟持される。
又、他方のスロットルボデーＴ２の上方には、前記第２燃料分配管６２が図示されぬネジによって羅着固定されるもので、このとき燃料噴射弁Ｊの先端部Ｊａが他方のスロットルボデーＴ２の先端ガイド孔６３に挿入されるとともに後端部Ｊｂが第２燃料分配管６２の後端ガイド孔６５に挿入され、かかる状態において燃料噴射弁Ｊは、他方のスロットルボデーＴ２と第２燃料分配管６２との間にクッション部材６６を介して挟持される。
以上によって一方のスロットルボデーＴ１に第１燃料分配管５３が固着配置されるとともに他方のスロットルボデーＴ２に第２燃料分配管６２が固着配置されたもので、このとき第１燃料分配管５３の対向面５３ａは、第２燃料分配管６２の対向面６２ａに対向して配置され、更に第１燃料分配管５３の対向面５３ａに、第１挿入孔５９を含む位置決め凹溝５８が開口し、第２燃料分配管６２の対向面６２ａに、第２挿入孔８１を含む位置決め凹溝８０が開口する。 The one throttle body T1 and the other throttle body T2 are arranged adjacent to each other and fixed to each other by a mounting stay 83 to form a multiple throttle body (in this embodiment, two stations). Is done.
The first fuel distribution pipe 53 is screwed and fixed above one throttle body T1 with a screw (not shown). At this time, the tip portion Ja of the fuel injection valve J is connected to one throttle body T1. The rear end Jb is inserted into the front guide hole 54 and the rear end guide hole 55 is inserted into the first fuel distribution pipe 53. In this state, the fuel injection valve J is connected to one throttle body T1 and the first fuel distribution pipe. 53 and a cushion member 56.
In addition, the second fuel distribution pipe 62 is fixed by a screw (not shown) above the other throttle body T2, and at this time, the tip portion Ja of the fuel injection valve J is connected to the other throttle body T2. While being inserted into the front end guide hole 63, the rear end portion Jb is inserted into the rear end guide hole 65 of the second fuel distribution pipe 62, and in this state, the fuel injection valve J is connected to the other throttle body T2 and the second fuel distribution pipe. 62 is sandwiched through a cushion member 66.
As described above, the first fuel distribution pipe 53 is fixedly disposed on one throttle body T1, and the second fuel distribution pipe 62 is fixedly disposed on the other throttle body T2. At this time, the first fuel distribution pipe 53 is opposed to the first fuel distribution pipe 53. The surface 53a is disposed so as to face the facing surface 62a of the second fuel distribution pipe 62, and a positioning groove 58 including a first insertion hole 59 is opened on the facing surface 53a of the first fuel distribution pipe 53. A positioning groove 80 including the second insertion hole 81 opens in the facing surface 62 a of the two fuel distribution pipe 62.

ここで、対向して配置される第１燃料分配管５３の対向面５３ａと第２燃料分配管６２の対向面６２ａとの間に、Ｔ型燃料ジョイント７０が配置される。
具体的には、Ｔ型燃料ジョイント７０の第１挿入接続管部７２が第１燃料分配管５３の第１挿入孔５９内に挿入されるとともに六角筒部７１の一端７１ａが位置決め凹溝５８内に挿入され、又第２挿入接続管部７３が第２燃料分配管６２の第２挿入孔８１内に挿入されるとともに六角筒部７１の他端７１ｂが位置決め凹溝８０内に挿入される。尚Ｒは第１シールリング溝７４、第２シールリング溝７５に配置されるＯリング、角リング等よりなるシールリングである。
以上によると、Ｔ型燃料ジョイント７０の第１挿入接続管部７２が、一方のスロットルボデーＴ１に固着された第１燃料分配管５３の第１挿入孔５９内に挿入配置されるとともに第２挿入接続管部７３が、他方のスロットルボデーＴ２に固着された第２燃料分配管６２の第２挿入孔８１内に挿入配置されたので、Ｔ型燃料ジョイント７０の側方への脱出が抑止され、更に第１シールリング溝７４に配置されたシールリングＲによって第１挿入孔５９と第１挿入接続管部７２との間の気密が保持され、第２シールリング溝７５に配置されたシールリングＲによって第２挿入孔８１と第２挿入接続管部７３との間の気密が保持される。
更に、Ｔ型燃料ジョイント７０の六角筒部７１の一端７１ａが第１燃料分配管５３の位置決め凹溝５８に挿入され、六角筒部７１の他端７１ｂが、第２燃料分配管６２の位置決め凹溝８０に挿入されたことによって、Ｔ型燃料ジョイント７０の回転を抑止することができ、燃料導入路７７を一定方向に向けて開口保持できる。 Here, the T-type fuel joint 70 is disposed between the facing surface 53 a of the first fuel distribution pipe 53 and the facing surface 62 a of the second fuel distribution pipe 62 that are disposed to face each other.
Specifically, the first insertion connecting pipe portion 72 of the T-type fuel joint 70 is inserted into the first insertion hole 59 of the first fuel distribution pipe 53, and the one end 71 a of the hexagonal cylinder portion 71 is inserted into the positioning groove 58. The second insertion connecting pipe portion 73 is inserted into the second insertion hole 81 of the second fuel distribution pipe 62 and the other end 71 b of the hexagonal cylinder portion 71 is inserted into the positioning groove 80. Note that R is a seal ring made of an O-ring, a square ring, or the like disposed in the first seal ring groove 74 and the second seal ring groove 75.
According to the above, the first insertion connecting pipe portion 72 of the T-type fuel joint 70 is inserted and disposed in the first insertion hole 59 of the first fuel distribution pipe 53 fixed to one throttle body T1, and the second insertion. Since the connecting pipe portion 73 is inserted and arranged in the second insertion hole 81 of the second fuel distribution pipe 62 fixed to the other throttle body T2, escape to the side of the T-type fuel joint 70 is suppressed, Further, the seal ring R disposed in the first seal ring groove 74 maintains the airtightness between the first insertion hole 59 and the first insertion connecting pipe portion 72, and the seal ring R disposed in the second seal ring groove 75. Thus, airtightness between the second insertion hole 81 and the second insertion connecting pipe portion 73 is maintained.
Further, one end 71 a of the hexagonal cylinder part 71 of the T-type fuel joint 70 is inserted into the positioning groove 58 of the first fuel distribution pipe 53, and the other end 71 b of the hexagonal cylinder part 71 is inserted into the positioning recess of the second fuel distribution pipe 62. By being inserted into the groove 80, the rotation of the T-type fuel joint 70 can be suppressed, and the fuel introduction path 77 can be held open in a certain direction.

尚、８４は、第１絞り弁軸５１と第２絞り弁軸６０とを同期的に回転させるとともに第１絞り弁５２と第２絞り弁６１の開度を同一開度に調整する為の連結同調機構であり、８５は第２絞り弁軸６０の端部に取着され、運転者によって操作されるスロットルドラムであり、スロットルドラム８５の回転に応じて第１、第２絞り弁５２、６１が各吸気通路５０を同期的に開閉制御する。   Reference numeral 84 denotes a connection for synchronously rotating the first throttle valve shaft 51 and the second throttle valve shaft 60 and adjusting the opening of the first throttle valve 52 and the second throttle valve 61 to the same opening. A tuning mechanism 85 is a throttle drum that is attached to the end of the second throttle valve shaft 60 and is operated by the driver. The first and second throttle valves 52 and 61 are operated according to the rotation of the throttle drum 85. Controls the opening and closing of each intake passage 50 synchronously.

而して、図示せぬ燃料ポンプにより昇圧された燃料が、燃料導入路７７を介してＴ型燃料ジョイント７０に供給されると、燃料供給路７６を介して第１燃料分配管５３の燃料分配路５７に供給され、この燃料が燃料噴射弁Ｊによって制御されて一方のスロットルボデーＴ１の吸気通路５０内へと噴射供給される。
一方、燃料供給路７６内の燃料は、第２燃料分配管６２の燃料分配路６４に供給され、この燃料が燃料噴射弁Ｊによって制御されて他方のスロットルボデーＴ２の吸気通路５０内へと噴射供給される。 Thus, when fuel boosted by a fuel pump (not shown) is supplied to the T-type fuel joint 70 via the fuel introduction path 77, the fuel distribution in the first fuel distribution pipe 53 via the fuel supply path 76. The fuel is supplied to the passage 57, and this fuel is controlled by the fuel injection valve J and injected into the intake passage 50 of one throttle body T1.
On the other hand, the fuel in the fuel supply passage 76 is supplied to the fuel distribution passage 64 of the second fuel distribution pipe 62, and this fuel is controlled by the fuel injection valve J and injected into the intake passage 50 of the other throttle body T2. Supplied.

かかる従来の多連スロットルボデーの燃料供給構造によると、以下の不具合を有する。第１には、第１燃料分配管５３の対向面５３ａに大径鍔部５３ｂが形成され、第２燃料分配管６２の対向面６２ａに大径鍔部６２ｂが形成されるもので、各燃料分配管５３，６２の対向面の外形状を小型化できない。
これは、図１４に示されるように第１燃料分配管５３の六角形状をなす位置決め凹溝５８内にＴ型燃料ジョイント７０の六角筒部７１が挿入配置されるもので、六角筒部７１の回転は、位置決め凹溝５８にて阻止される。
具体的には六角筒部７１を形成する１個の頂角７１ａの回転は、六角孔よりなる位置決め凹溝５８の一辺５８ａによって阻止される。いいかえると、頂角７１ａの回転は、位置決め凹溝５８の６０度の範囲に形成される一辺５８ａにて阻止する必要がある。
以上によると、位置決め凹溝５８の一辺５８ａの剛性を高める為に、大径鍔部５３ｂの直径ｄは位置決め凹溝５８より充分に大径に形成される必要があり、仮に大径鍔部５３ｂの直径ｄが小径に形成されると、六角筒部７１に回転力が付与された際、大径鍔部５３ｂが外方へ拡大変形して六角筒部７１の回転を阻止することができない。
このことは、燃料分配管を合成樹脂材料によって形成した際、顕著に表われる。
又、前述の如くＴ型燃料ジョイント７０に六角筒部７１が形成されることにより、Ｔ型燃料ジョイント自体を小型化できない。
第２には、Ｔ型燃料ジョイント７０の燃料導入路７７の開口位置を一定方向に容易に配置することが困難である。
これは、六角孔よりなる位置決め凹溝５８内に六角筒部７１が６０度間隔でいづれの方向にも挿入配置することができるからである。 Such a conventional multiple throttle body fuel supply structure has the following problems. First, a large diameter flange 53b is formed on the facing surface 53a of the first fuel distribution pipe 53, and a large diameter flange 62b is formed on the facing surface 62a of the second fuel distribution pipe 62. The outer shape of the opposing surfaces of the distribution pipes 53 and 62 cannot be reduced in size.
As shown in FIG. 14, the hexagonal cylinder part 71 of the T-type fuel joint 70 is inserted into the hexagonal positioning groove 58 of the first fuel distribution pipe 53. The rotation is blocked by the positioning groove 58.
Specifically, the rotation of one apex angle 71a forming the hexagonal cylinder portion 71 is blocked by one side 58a of the positioning groove 58 made of a hexagonal hole. In other words, it is necessary to prevent rotation of the apex angle 71a at one side 58a formed in the range of 60 degrees of the positioning groove 58.
According to the above, in order to increase the rigidity of one side 58a of the positioning groove 58, the diameter d of the large diameter flange 53b needs to be formed sufficiently larger than the positioning groove 58. If the diameter d is formed to be small, when the rotational force is applied to the hexagonal cylinder part 71, the large-diameter flange part 53b expands and deforms outward and cannot prevent the hexagonal cylinder part 71 from rotating.
This is noticeable when the fuel distribution pipe is formed of a synthetic resin material.
Further, since the hexagonal cylinder portion 71 is formed in the T-type fuel joint 70 as described above, the T-type fuel joint itself cannot be reduced in size.
Second, it is difficult to easily arrange the opening position of the fuel introduction passage 77 of the T-type fuel joint 70 in a certain direction.
This is because the hexagonal cylinder portion 71 can be inserted and arranged in any direction at intervals of 60 degrees in the positioning groove 58 formed of a hexagonal hole.

本発明になる多連スロットルボデーにおける燃料供給構造は、前記課題に鑑み成されたもので、各燃料分配管の特に対向面における形状を小型化するとともにＴ型燃料ジョイントの形状を小型化することのできる前記構造を提供するとともにＴ型燃料ジョイントの燃料導入路の開口位置を極めて容易に且つ短時間で一定位置に開口することのできる前記燃料供給構造を提供することを目的とする。   The fuel supply structure in the multiple throttle body according to the present invention is made in view of the above-mentioned problems, and the size of each fuel distribution pipe, particularly on the opposed surface, is reduced and the shape of the T-type fuel joint is reduced. It is an object of the present invention to provide a fuel supply structure capable of opening the fuel introduction path of the T-type fuel joint to a certain position very easily and in a short time.

本発明になる多連スロットルボデーにおける燃料供給管構造は、前記目的達成の為に、隣設される一方のスロットルボデーに固着され、燃料噴射弁の後端部が挿入支持され、内部に燃料分配路が穿設された第１燃料分配管と、
隣設される他方のスロットルボデーに固着され、燃料噴射弁の後端部が挿入支持され、内部に燃料分配路が穿設された第２燃料分配管と、
側方にのびる燃料供給路と、燃料供給路に連なる燃料導入路と、を備え、
燃料供給路の一端外周に第１挿入接続管部が形成され、燃料供給路の他端外周に第２挿入接続管部が形成されるＴ型燃料ジョイントと、
を備え、
前記Ｔ型燃料ジョイントの第１挿入接続管部が第１燃料分配管の対向面に開口する燃料分配路に挿入接続されるとともに第２挿入接続管部が第２燃料分配管の対向面に開口する燃料分配路に挿入接続され、Ｔ型燃料ジョイントが第１燃料分配管と第２燃料分配管によって挟持される多連スロットルボデーにおける燃料供給構造において、
Ｔ型燃料ジョイントは、側方にのびる円筒部の一端から他端に向けて燃料供給路３が貫通して穿設され、円筒部の一端の近傍に、第１シールリング溝が穿設された第１挿入接続管部が形成されるとともに円筒部の他端の近傍に、第２シールリング溝が穿設された第２挿入接続管部が形成され、
更に、第１シールリング溝より他端側の円筒部の外周及び第２シールリング溝より一端側の円筒部の外周に、対称にして且つ異形状をなす第１位置決め突部と第２位置決め突部とをそれぞれ突出して設け、
一方、第１燃料分配管の対向面には、燃料分配路に連なる第１挿入孔が開口して穿設されるとともに対向面から第１挿入孔に向けて、前記第１位置決め突部、第２位置決め突部を挿入しうる、異形状をなす第１位置決め凹溝と第２位置決め凹溝が凹設され、第２燃料分配管の対向面には、燃料分配路に連なる第２挿入孔が開口して穿設されるとともに対向面から第２挿入孔に向けて、前記第１位置決め突部、第２位置決め突部を挿入しうる、異形状をなす第１位置決め凹溝と第２位置決め凹溝が凹設され、
前記Ｔ型燃料ジョイントの第１挿入接続管部を第１燃料分配管の第１挿入孔内に挿入し、第１位置決め突部を第１位置決め凹溝に挿入するとともに第２位置決め突部を第２位置決め凹溝に挿入し、更に第２挿入接続管部を第２燃料分配管の第２挿入孔内に挿入し、第１位置決め突部を第１位置決め凹溝に挿入するとともに第２位置決め突部を第２位置決め凹溝に挿入したことを第１の特徴とする。 In order to achieve the above object, the fuel supply pipe structure in the multiple throttle body according to the present invention is fixed to one of the adjacent throttle bodies, the rear end portion of the fuel injection valve is inserted and supported, and the fuel is distributed inside. A first fuel distribution pipe having a passage formed therein;
A second fuel distribution pipe fixed to the other throttle body provided adjacently, the rear end portion of the fuel injection valve being inserted and supported, and a fuel distribution path formed therein;
A fuel supply passage extending sideways, and a fuel introduction passage connected to the fuel supply passage,
A T-type fuel joint in which a first insertion connecting pipe is formed on the outer periphery of one end of the fuel supply path, and a second insertion connecting pipe is formed on the outer periphery of the other end of the fuel supply path;
With
The first insertion connecting pipe portion of the T-type fuel joint is inserted and connected to a fuel distribution passage that opens to the opposite surface of the first fuel distribution pipe, and the second insertion connection pipe portion opens to the opposite surface of the second fuel distribution pipe. A fuel supply structure in a multiple throttle body that is inserted and connected to a fuel distribution path, and a T-type fuel joint is sandwiched between a first fuel distribution pipe and a second fuel distribution pipe,
The T-type fuel joint has a fuel supply passage 3 extending through one side of the cylindrical portion extending from the side toward the other end, and a first seal ring groove is formed in the vicinity of one end of the cylindrical portion. A second insertion connecting pipe part having a second seal ring groove formed in the vicinity of the other end of the cylindrical part is formed while the first insertion connecting pipe part is formed,
Further, a first positioning protrusion and a second positioning protrusion that are symmetrical and have different shapes on the outer periphery of the cylindrical portion on the other end side of the first seal ring groove and on the outer periphery of the cylindrical portion on the one end side of the second seal ring groove. And projecting each part,
On the other hand, a first insertion hole connected to the fuel distribution path is opened and formed in the opposing surface of the first fuel distribution pipe, and the first positioning protrusion and the first insertion hole are formed from the opposing surface toward the first insertion hole. 2 A first positioning groove and a second positioning groove having different shapes into which the positioning protrusions can be inserted are provided, and a second insertion hole connected to the fuel distribution passage is formed on the opposing surface of the second fuel distribution pipe. A first positioning groove and a second positioning groove having different shapes that can be inserted into the first positioning protrusion and the second positioning protrusion from the facing surface toward the second insertion hole. The groove is recessed,
The first insertion connecting pipe portion of the T-type fuel joint is inserted into the first insertion hole of the first fuel distribution pipe, the first positioning protrusion is inserted into the first positioning groove, and the second positioning protrusion is 2 Insert into the positioning groove, further insert the second insertion connecting pipe portion into the second insertion hole of the second fuel distribution pipe, insert the first positioning protrusion into the first positioning groove and the second positioning protrusion. The first feature is that the portion is inserted into the second positioning groove.

又、本発明は、前期第１の特徴に加え、前記、第１位置決め凹溝、第２位置決め凹溝を、第１挿入孔から第１燃料分配管の外周に向かうスリット溝及び第２挿入孔から第２燃料分配管の外周に向かうスリット溝、としたことを第２の特徴とする。   In addition to the first feature of the first aspect of the present invention, the first positioning groove and the second positioning groove are provided with a slit groove and a second insertion hole from the first insertion hole toward the outer periphery of the first fuel distribution pipe. The second feature is that the slit groove is directed toward the outer periphery of the second fuel distribution pipe.

本発明の第１の特徴によると、第１燃料分配管は一方のスロットルボデーに固着され、Ｔ型燃料ジョイントの第１挿入接続管部が第１挿入孔内に挿入配置されるとともに第１位置決め突部が第１位置決め凹溝内に挿入配置され、第２位置決め突部が第２位置決め凹溝内に挿入配置される。
一方、第２燃料分配管は他方のスロットルボデーに固着され、Ｔ型燃料ジョイントの第２挿入接続管部が第２挿入孔内に挿入配置されるとともに第１位置決め突部が第１位置決め凹溝内に挿入配置され、第２位置決め突部が第２位置決め凹溝内に挿入配置される。
以上によると、Ｔ型燃料ジョイントは第１、第２燃料分配管の間に挟持されて側方への脱出が阻止され、位置決め突部と位置決め凹溝とによってその回転が阻止される。
そして燃料分配管には、Ｔ型燃料ジョイントの円筒部の外周に、対称に突出して形成した第１、第２位置決め突部を挿入しうる第１、第２位置決め凹溝を形成すればよいので、燃料分配管の対向面における形状を小型化できる。
又、Ｔ型燃料ジョイントにあっては、第１、第２挿入接続管部を含む円筒部が形成されるので、Ｔ型燃料ジョイントの形状を小型化できる。
更に、円筒部の外周に突出して形成される第１、第２位置決め突部を、対称にして且つ異形状に一対形成したので、極めて容易にＴ型燃料ジョイントの燃料導入路の開口位置を一定方向に開口できる。 According to the first feature of the present invention, the first fuel distribution pipe is fixed to one throttle body, the first insertion connecting pipe portion of the T-type fuel joint is inserted and disposed in the first insertion hole, and the first positioning is performed. The protrusion is inserted and disposed in the first positioning groove, and the second positioning protrusion is inserted and disposed in the second positioning groove.
On the other hand, the second fuel distribution pipe is fixed to the other throttle body, the second insertion connecting pipe portion of the T-type fuel joint is inserted into the second insertion hole, and the first positioning projection is the first positioning groove. The second positioning protrusion is inserted and arranged in the second positioning groove.
According to the above, the T-type fuel joint is sandwiched between the first and second fuel distribution pipes to prevent sideward escape, and the rotation is prevented by the positioning protrusion and the positioning groove.
Since the first and second positioning grooves into which the first and second positioning protrusions formed so as to protrude symmetrically can be inserted into the outer periphery of the cylindrical portion of the T-type fuel joint, the fuel distribution pipe may be formed. The shape on the opposing surface of the fuel distribution pipe can be reduced in size.
Further, in the T-type fuel joint, since the cylindrical portion including the first and second insertion connecting pipe portions is formed, the shape of the T-type fuel joint can be reduced in size.
Furthermore, since the first and second positioning projections formed to protrude from the outer periphery of the cylindrical portion are formed symmetrically and in pairs with different shapes, the opening position of the fuel introduction path of the T-type fuel joint can be fixed easily. Open in the direction.

又、本発明の第２の特徴によると、燃料分配管に形成される位置決め凹溝を、挿入孔から燃料分配管の外周に向かうスリット溝としたので、より一層燃料分配管の対向面における形状を小型化できる。   According to the second feature of the present invention, since the positioning groove formed in the fuel distribution pipe is a slit groove extending from the insertion hole to the outer periphery of the fuel distribution pipe, the shape on the opposite surface of the fuel distribution pipe is further increased. Can be miniaturized.

以下、本発明になる多連スロットルボデーにおける燃料供給構造の一実施例について図により説明する。
図１は、本発明の多連スロットルボデーにおける燃料供給構造の要部縦断面図。
図２は、図１に用いられるＴ型燃料ジョイントの正面図。図３は図２の右側面図。
図４は、図１に用いられる第１燃料分配管１１の要部縦断面図。図５は図４の右側面図である。
尚、図１と同一構造部分については同一符号を使用して説明を省略する。
Ｔ型燃料ジョイント１は以下によって形成される。
２は側方に向かって円筒形状に形成された円筒部であり、円筒部２の一端２ａから他端２ｂに向けて燃料供給路３が貫通して穿設され、更に円筒部２より上方に向けて燃料供給路３に連なる燃料導入路４が形成される。
又、円筒部２の一端２ａ側には第１挿入接続管部５が形成されるとともに円筒部２の他端２ｂ側には第２挿入接続管部６が形成されるもので、本実施例にあっては、第１、第２挿入接続管部５、６及び円筒部２の外径は同径にして且つ同芯に形成された。
又、第１挿入接続管部５、第２挿入接続管部６より内方に位置する円筒部２の外周には、第１位置決め突部７、第２位置決め突部８が突出して形成される。
かかる、第１位置決め突部７、第２位置決め突部８は図３に示されるように燃料供給路３をはさんで対称位置に形成されるとともにその形状が異形状に形成される。
異形状に形成されるとは、突出寸法ａが互いに異なること、あるいは幅ｂが互いに異なること、断面形状が互いに異なることを意味する。
又、第１挿入接続管部５には第１シールリング溝９が穿設され、第２挿入接続管部６には第２シールリング溝１０が穿設される。
上記によれば、一方の第１、第２位置決め突部７、８は第１シールリング溝９より他端２ｂ側の円筒部２の外周に突出して形成され、他方の第１、第２位置決め突部７、８は、第２シールリング溝１０より一端２ａ側の円筒部２の外周に突出して形成されることになる。 Hereinafter, an embodiment of a fuel supply structure in a multiple throttle body according to the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view of an essential part of a fuel supply structure in a multiple throttle body according to the present invention.
FIG. 2 is a front view of a T-type fuel joint used in FIG. FIG. 3 is a right side view of FIG.
FIG. 4 is a longitudinal sectional view of an essential part of the first fuel distribution pipe 11 used in FIG. FIG. 5 is a right side view of FIG.
In addition, about the same structure part as FIG. 1, the description is abbreviate | omitted using the same code | symbol.
The T-type fuel joint 1 is formed by the following.
Reference numeral 2 denotes a cylindrical portion formed in a cylindrical shape toward the side. A fuel supply passage 3 is formed by penetrating from one end 2a of the cylindrical portion 2 to the other end 2b, and further above the cylindrical portion 2. A fuel introduction path 4 that continues to the fuel supply path 3 is formed.
Further, the first insertion connecting pipe portion 5 is formed on the one end 2a side of the cylindrical portion 2, and the second insertion connecting pipe portion 6 is formed on the other end 2b side of the cylindrical portion 2, and this embodiment In this case, the outer diameters of the first and second insertion connecting pipe portions 5 and 6 and the cylindrical portion 2 were made the same diameter and formed concentrically.
Further, a first positioning projection 7 and a second positioning projection 8 are formed on the outer periphery of the cylindrical portion 2 located inward from the first insertion connecting pipe portion 5 and the second insertion connecting tube portion 6. .
As shown in FIG. 3, the first positioning protrusion 7 and the second positioning protrusion 8 are formed at symmetrical positions with the fuel supply path 3 interposed therebetween, and the shapes thereof are formed differently.
Forming in a different shape means that the projecting dimensions a are different from each other, the width b is different from each other, and the cross-sectional shapes are different from each other.
The first insertion connecting pipe portion 5 is provided with a first seal ring groove 9, and the second insertion connecting pipe portion 6 is provided with a second seal ring groove 10.
According to the above, one of the first and second positioning protrusions 7 and 8 is formed so as to protrude from the first seal ring groove 9 to the outer periphery of the cylindrical portion 2 on the other end 2b side, and the other first and second positioning protrusions are formed. The protrusions 7 and 8 are formed to protrude from the second seal ring groove 10 to the outer periphery of the cylindrical portion 2 on the one end 2a side.

図１、図４、図５を用いて第１燃料分配管１１について説明する。
第１燃料分配管１１の右方の対向面１１ａには、燃料分配路１２に連なる第１挿入孔１３が開口するもので、更に対向面１１ａから第１挿入孔１３に向けて、第１位置決め突部７を挿入する第１位置決め凹溝１４と、第２位置決め突部８を挿入する第２位置決め凹溝１５とが穿設される。かかる第１、第２位置決め凹溝１４、１５は図５に明示されるもので、対称位置に形成される。
又、第２燃料分配管２０は以下によって形成される。
第２燃料分配管２０の左方の対向面２０ａには、燃料分配路２１に連なる第２挿入孔２２が開口するもので、更に対向面２０ａから第２挿入孔２２に向けて、第１位置決め突部７を挿入する第１位置決め凹溝２３と、第２位置決め突部８を挿入する第２位置決め凹溝２４とが穿設される。かかる第１、第２位置決め凹溝は前記と同様に対称位置に形成される。 The first fuel distribution pipe 11 will be described with reference to FIGS. 1, 4, and 5.
A first insertion hole 13 connected to the fuel distribution path 12 is opened on the right facing surface 11 a of the first fuel distribution pipe 11, and the first positioning is further performed from the facing surface 11 a toward the first insertion hole 13. A first positioning groove 14 for inserting the protrusion 7 and a second positioning groove 15 for inserting the second positioning protrusion 8 are formed. The first and second positioning grooves 14 and 15 are clearly shown in FIG. 5 and are formed at symmetrical positions.
The second fuel distribution pipe 20 is formed by the following.
A second insertion hole 22 connected to the fuel distribution path 21 is opened on the left facing surface 20a of the second fuel distribution pipe 20, and the first positioning is further performed from the facing surface 20a toward the second insertion hole 22. A first positioning groove 23 into which the protrusion 7 is inserted and a second positioning groove 24 into which the second positioning protrusion 8 is inserted are formed. The first and second positioning grooves are formed at symmetrical positions as described above.

そして、第１燃料分配管１１が図示されぬビスによって一方のスロットルボデーＴ１に螺着固定され、第２燃料分配管２０は他方のスロットルボデーＴ２に螺着固定され、このとき前記と同様に一方の燃料噴射弁Ｊは、第１燃料分配管１１と一方のスロットルボデーＴ１によって挟持され、他方の燃料噴射弁Ｊは、第２燃料分配管２０と他方のスロットルボデーＴ２とによって挟持される。
そして、かかる状態において、Ｔ型燃料ジョイント１の第１挿入接続管部５が第１燃料分配管１１の第１挿入孔１３内に挿入されるとともに第１位置決め突部７が第１位置決め凹溝１４に挿入され、第２位置決め突部８が第２位置決め凹溝１５に挿入配置される。
尚、第１シールリング溝９と第１挿入孔１３との間にはゴム材料によって形成されたシールリングＲが縮設配置される。
又、Ｔ型燃料ジョイント１の第２挿入接続管部６が第２燃料分配管２０の第２挿入孔２２内に挿入されるとともに第１位置決め突部７が第１位置決め凹溝２３に挿入され、第２位置決め突部８が第２位置決め凹溝２４に挿入配置される。
尚、第２シールリング溝１０と第２挿入孔２２との間にはシールリングＲが縮設配置される。
ここで、図示せぬ燃料ポンプより昇圧された燃料が、Ｔ型燃料ジョイント１の燃料導入路４に供給されると、この燃料は、燃料供給路３、第１燃料分配管１１の燃料分配路１２、を介して一方の燃料噴射弁Ｊへと供給され、この燃料噴射弁Ｊより一方のスロットルボデーＴ１の吸気通路５０内へ燃料が噴射供給される。
一方、燃料供給路３内の燃料は、第２燃料分配管２０の燃料分配路２１を介して他方の燃料噴射弁Ｊへと供給され、この燃料噴射弁Ｊより他方のスロットルボデーＴ２の吸気通路５０内へ燃料が噴射供給される。
尚、第１シールリング溝９と第１挿入孔１３との間、及び第２シールリング溝１０と第２挿入孔２２との間にシールリングＲが縮設配置されるので、燃料分配路１２、２１に供給される燃料が外部に洩れることがない。
ここで、本発明にあっては、Ｔ型燃料ジョイント１の円筒部２の外周に、燃料供給路３の長手軸心線に対称位置であって且つ互いに異形状をなす第１位置決め突部７、第２位置決め突部８を突出して形成し、かかる第１位置決め突部７を、それぞれの第１位置決め凹溝１４、２３内に挿入配置するとともに第２位置決め突部８を、それぞれの第２位置決めの凹溝１５、２４内に挿入配置したので、第１にはＴ型燃料ジョイント１の回転を抑止できる。第２には、Ｔ型燃料ジョイント１の燃料導入路４の開口位置を容易にして且つ確実に所望の一定位置に向かって配置できる。
第３には燃料分配管１１、２０の外形状を小型化できる。
これは図６に示される如く、位置決め突部７、８の回転に対し、第１燃料分配管１１は略１８０度の範囲の筒部１１ｂ、１１ｃ（図６においてＸ及びＹで示される筒分の斜線範囲）により高い剛性をもって回転を阻止することができるので、第１燃料分配管１１の直径ｚを小径にできる。
更にＴ型燃料ジョイント１の外形状を小型化できる。これはＴ型燃料ジョイントが円筒部２をもって形成され、六角筒部を有しないからである。 Then, the first fuel distribution pipe 11 is screwed and fixed to one throttle body T1 with a screw (not shown), and the second fuel distribution pipe 20 is screwed and fixed to the other throttle body T2. The fuel injection valve J is sandwiched between the first fuel distribution pipe 11 and one throttle body T1, and the other fuel injection valve J is sandwiched between the second fuel distribution pipe 20 and the other throttle body T2.
In this state, the first insertion connecting pipe portion 5 of the T-type fuel joint 1 is inserted into the first insertion hole 13 of the first fuel distribution pipe 11 and the first positioning projection 7 is the first positioning groove. 14 and the second positioning projection 8 is inserted into the second positioning groove 15.
A seal ring R formed of a rubber material is disposed between the first seal ring groove 9 and the first insertion hole 13 in a contracted manner.
The second insertion connecting pipe portion 6 of the T-type fuel joint 1 is inserted into the second insertion hole 22 of the second fuel distribution pipe 20 and the first positioning projection 7 is inserted into the first positioning groove 23. The second positioning protrusion 8 is inserted into the second positioning groove 24.
Note that a seal ring R is disposed in a contracted manner between the second seal ring groove 10 and the second insertion hole 22.
Here, when fuel boosted by a fuel pump (not shown) is supplied to the fuel introduction path 4 of the T-type fuel joint 1, the fuel is supplied to the fuel supply path 3 and the fuel distribution path of the first fuel distribution pipe 11. 12, fuel is supplied to one fuel injection valve J, and fuel is injected and supplied from the fuel injection valve J into the intake passage 50 of one throttle body T1.
On the other hand, the fuel in the fuel supply passage 3 is supplied to the other fuel injection valve J via the fuel distribution passage 21 of the second fuel distribution pipe 20, and the intake passage of the other throttle body T2 from the fuel injection valve J. Fuel is injected into 50.
In addition, since the seal ring R is disposed in a contracted manner between the first seal ring groove 9 and the first insertion hole 13 and between the second seal ring groove 10 and the second insertion hole 22, the fuel distribution path 12. , 21 does not leak to the outside.
Here, in the present invention, the first positioning projections 7 which are symmetrical with respect to the longitudinal axis of the fuel supply passage 3 and have different shapes are formed on the outer periphery of the cylindrical portion 2 of the T-type fuel joint 1. The second positioning projection 8 is formed so as to protrude, and the first positioning projection 7 is inserted into the first positioning grooves 14 and 23 and the second positioning projection 8 is arranged in the second First, the rotation of the T-type fuel joint 1 can be suppressed because it is inserted into the positioning grooves 15 and 24. Secondly, the opening position of the fuel introduction path 4 of the T-type fuel joint 1 can be easily and surely arranged toward a desired fixed position.
Thirdly, the outer shape of the fuel distribution pipes 11 and 20 can be reduced in size.
This is because, as shown in FIG. 6, the first fuel distribution pipe 11 has cylinder portions 11b and 11c (indicated by X and Y in FIG. 6) in the range of approximately 180 degrees with respect to the rotation of the positioning projections 7 and 8. ), The rotation can be prevented with high rigidity, so that the diameter z of the first fuel distribution pipe 11 can be made small.
Furthermore, the outer shape of the T-type fuel joint 1 can be reduced in size. This is because the T-type fuel joint is formed with the cylindrical portion 2 and does not have a hexagonal cylindrical portion.

図７、図８には燃料分配管１１、２０に形成される第１、第２位置決め凹溝１４、１５の他の実施例が示される。
図７は第１燃料分配管１１の要部縦断面図。図８は図７の右側面図。である。
本実施例による第１、第２位置決め凹溝１４、１５は、対向面１１ａから第１挿入孔１３に向けてスリット溝として形成されるもので、スリット溝は第１挿入孔１３から燃料分配管１１の外周に向けて切欠き形成される。
かかるスリット溝を用いたことによると、燃料分配管１１の直径ｚは、第１、第２位置決め突部７，８の外径部７ａ、８ａに近接してその直径を減少させることができ、もって燃料分配管１１を更に小型化することができたものである。 FIGS. 7 and 8 show another embodiment of the first and second positioning grooves 14 and 15 formed in the fuel distribution pipes 11 and 20.
FIG. 7 is a longitudinal sectional view of a main part of the first fuel distribution pipe 11. 8 is a right side view of FIG. It is.
The first and second positioning grooves 14 and 15 according to the present embodiment are formed as slit grooves from the facing surface 11 a toward the first insertion hole 13, and the slit groove extends from the first insertion hole 13 to the fuel distribution pipe. A notch is formed toward the outer periphery of 11.
By using such a slit groove, the diameter z of the fuel distribution pipe 11 can be reduced in the vicinity of the outer diameter portions 7a, 8a of the first and second positioning projections 7, 8. Thus, the fuel distribution pipe 11 can be further reduced in size.

本発明になる多連スロットルボデーにおける燃料供給構造の一実施例を示す要部縦断面図。The principal part longitudinal cross-sectional view which shows one Example of the fuel supply structure in the multiple throttle body which becomes this invention. 図１に用いられるＴ型燃料ジョイントの一実施例を示す正面図。The front view which shows one Example of the T-type fuel joint used for FIG. 図２の右側面図。The right view of FIG. 図１に用いられる第１燃料分配管の要部縦断面図。The principal part longitudinal cross-sectional view of the 1st fuel distribution pipe used for FIG. 図４の右側面図。The right view of FIG. 図１における第１燃料分配管の第１、第２位置決め凹溝とＴ型燃料ジョイントの第１、第２位置決め突部の挿入状態を要す要部横断面図。The principal part cross-sectional view which requires the insertion state of the 1st, 2nd positioning groove of the 1st fuel distribution pipe in FIG. 1, and the 1st, 2nd positioning protrusion of a T-type fuel joint. 第１、第２位置決め凹溝の他の実施例を示す要部縦断面図。The principal part longitudinal cross-sectional view which shows the other Example of the 1st, 2nd positioning ditch | groove. 図７の右側面図。The right view of FIG. 従来の多連スロットルボデーにおける燃料供給構造を示す要部縦断面図。The principal part longitudinal cross-sectional view which shows the fuel supply structure in the conventional multiple throttle body. 図９において用いられるＴ型燃料ジョイントの正面図。FIG. 10 is a front view of a T-type fuel joint used in FIG. 9. 図１０の右側面図。The right view of FIG. 図９において用いられる第１燃料分配管の要部縦断面図。The principal part longitudinal cross-sectional view of the 1st fuel distribution pipe used in FIG. 図１２の右側面図。The right view of FIG. 図９における六角筒部と位置決め凹溝との挿入状態を示す概略図。Schematic which shows the insertion state of the hexagonal cylinder part and positioning concave groove in FIG.

符号の説明Explanation of symbols

１ Ｔ型燃料ジョイント
２ 円筒部
２ａ 一端
２ｂ 他端
３ 燃料供給路
５ 第１挿入接続管部
６ 第２挿入接続管部
７ 第１位置決め突部
８ 第２位置決め突部
１１ 第１燃料分配管
１１ａ 対向面
１２ 燃料分配路
１３ 第１挿入孔
１４ 第１位置決め凹溝
１５ 第２位置決め凹溝
２０ 第２燃料分配管
２１ 燃料分配路
２２ 第２挿入孔
２３ 第１位置決め凹溝
２４ 第２位置決め凹溝
DESCRIPTION OF SYMBOLS 1 T type fuel joint 2 Cylindrical part 2a One end 2b Other end 3 Fuel supply path 5 1st insertion connection pipe part 6 2nd insertion connection pipe part 7 1st positioning protrusion 8 2nd positioning protrusion 11 1st fuel distribution pipe 11a Opposing surface 12 Fuel distribution path 13 First insertion hole 14 First positioning groove 15 Second positioning groove 20 Second fuel distribution pipe 21 Fuel distribution path 22 Second insertion hole 23 First positioning groove 24 Second positioning groove

Claims (2)

隣設される一方のスロットルボデーに固着され、燃料噴射弁の後端部が挿入支持され、内部に燃料分配路が穿設された第１燃料分配管と、
隣設される他方のスロットルボデーに固着され、燃料噴射弁の後端部が挿入支持され、内部に燃料分配路が穿設された第２燃料分配管と、
側方にのびる燃料供給路と、燃料供給路に連なる燃料導入路と、を備え、
燃料供給路の一端外周に第１挿入接続管部が形成され、燃料供給路の他端外周に第２挿入接続管部が形成されるＴ型燃料ジョイントと、
を備え、
前記Ｔ型燃料ジョイントの第１挿入接続管部が第１燃料分配管の対向面に開口する燃料分配路に挿入接続されるとともに第２挿入接続管部が第２燃料分配管の対向面に開口する燃料分配路に挿入接続され、Ｔ型燃料ジョイントが第１燃料分配管と第２燃料分配管によって挟持される多連スロットルボデーにおける燃料供給構造において、
Ｔ型燃料ジョイント１は、側方にのびる円筒部２の一端２ａから他端２ｂに向けて燃料供給路３が貫通して穿設され、円筒部２の一端２ａの近傍に、第１シールリング溝９が穿設された第１挿入接続管部５が形成されるとともに円筒部２の他端２ｂの近傍に、第２シールリング溝１０が穿設された第２挿入接続管部６が形成され、
更に、第１シールリング溝９より他端２ｂ側の円筒部２の外周及び第２シールリング溝１０より一端２ａ側の円筒部２の外周に、対称にして且つ異形状をなす第１位置決め突部７と第２位置決め突部８とをそれぞれ突出して設け、
一方、第１燃料分配管１１の対向面１１ａには、燃料分配路１２に連なる第１挿入孔１３が開口して穿設されるとともに対向面１１ａから第１挿入孔１３に向けて、前記第１位置決め突部７、第２位置決め突部８を挿入しうる、異形状をなす第１位置決め凹溝１４と第２位置決め凹溝１５が凹設され、第２燃料分配管２０の対向面２０ａには、燃料分配路２１に連なる第２挿入孔２２が開口して穿設されるとともに対向面２０ａから第２挿入孔２２に向けて、前記第１位置決め突部７、第２位置決め突部８を挿入しうる、異形状をなす第１位置決め凹溝２３と第２位置決め凹溝２４が凹設され、
前記Ｔ型燃料ジョイントの第１挿入接続管部５を第１燃料分配管１１の第１挿入孔１３内に挿入し、第１位置決め突部７を第１位置決め凹溝１４に挿入するとともに第２位置決め突部８を第２位置決め凹溝１５に挿入し、更に第２挿入接続管部６を第２燃料分配管２０の第２挿入孔２２内に挿入し、第１位置決め突部７を第１位置決め凹溝２３に挿入するとともに第２位置決め突部８を第２位置決め凹溝２４に挿入したことを特徴とする多連スロットルボデーにおける燃料供給構造。 A first fuel distribution pipe fixed to one of the adjacent throttle bodies, a rear end portion of the fuel injection valve inserted and supported, and a fuel distribution path formed therein;
A second fuel distribution pipe fixed to the other throttle body provided adjacently, the rear end portion of the fuel injection valve being inserted and supported, and a fuel distribution path formed therein;
A fuel supply passage extending sideways, and a fuel introduction passage connected to the fuel supply passage,
A T-type fuel joint in which a first insertion connecting pipe is formed on the outer periphery of one end of the fuel supply path, and a second insertion connecting pipe is formed on the outer periphery of the other end of the fuel supply path;
With
The first insertion connecting pipe portion of the T-type fuel joint is inserted and connected to a fuel distribution passage that opens to the opposite surface of the first fuel distribution pipe, and the second insertion connection pipe portion opens to the opposite surface of the second fuel distribution pipe. A fuel supply structure in a multiple throttle body that is inserted and connected to a fuel distribution path, and a T-type fuel joint is sandwiched between a first fuel distribution pipe and a second fuel distribution pipe,
The T-type fuel joint 1 has a fuel supply passage 3 penetrating from one end 2a of the cylindrical portion 2 extending sideways toward the other end 2b, and a first seal ring is formed in the vicinity of the one end 2a of the cylindrical portion 2. A first insertion connecting pipe portion 5 with a groove 9 is formed, and a second insertion connecting pipe portion 6 with a second seal ring groove 10 is formed in the vicinity of the other end 2 b of the cylindrical portion 2. And
Further, a first positioning protrusion that is symmetrical and has an irregular shape on the outer periphery of the cylindrical portion 2 on the other end 2b side from the first seal ring groove 9 and on the outer periphery of the cylindrical portion 2 on the one end 2a side from the second seal ring groove 10. Projecting portions 7 and second positioning projections 8 respectively,
On the other hand, a first insertion hole 13 connected to the fuel distribution path 12 is opened and formed in the facing surface 11a of the first fuel distribution pipe 11, and the first insertion hole 13 is directed from the facing surface 11a toward the first insertion hole 13. A first positioning groove 14 and a second positioning groove 15 having different shapes into which the first positioning protrusion 7 and the second positioning protrusion 8 can be inserted are provided in the opposing surface 20 a of the second fuel distribution pipe 20. The second insertion hole 22 connected to the fuel distribution path 21 is opened and drilled, and the first positioning protrusion 7 and the second positioning protrusion 8 are moved from the facing surface 20a toward the second insertion hole 22. A first positioning groove 23 and a second positioning groove 24 having different shapes that can be inserted are recessed,
The first insertion connecting pipe portion 5 of the T-type fuel joint is inserted into the first insertion hole 13 of the first fuel distribution pipe 11, and the first positioning projection 7 is inserted into the first positioning groove 14 and the second. The positioning protrusion 8 is inserted into the second positioning groove 15, the second insertion connecting pipe portion 6 is further inserted into the second insertion hole 22 of the second fuel distribution pipe 20, and the first positioning protrusion 7 is inserted into the first positioning protrusion 7. 2. A fuel supply structure in a multiple throttle body, wherein the fuel is inserted into the positioning groove 23 and the second positioning protrusion 8 is inserted into the second positioning groove 24. 前記、第１位置決め凹溝１４、第２位置決め凹溝１５を、第１挿入孔１３から第１燃料分配管１１の外周に向かうスリット溝及び第２挿入孔２２から第２燃料分配管２０の外周に向かうスリット溝、としたことを特徴とする請求項１記載の多連スロットルボデーにおける燃料供給構造。
The first positioning groove 14 and the second positioning groove 15 are formed from the first insertion hole 13 toward the outer periphery of the first fuel distribution pipe 11 and from the second insertion hole 22 to the outer periphery of the second fuel distribution pipe 20. The fuel supply structure in the multiple throttle body according to claim 1, wherein the fuel supply structure is a slit groove toward the front.
JP2005368171A 2005-12-21 2005-12-21 Fuel supply structure in multiple throttle body Pending JP2007170257A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005368171A JP2007170257A (en) 2005-12-21 2005-12-21 Fuel supply structure in multiple throttle body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005368171A JP2007170257A (en) 2005-12-21 2005-12-21 Fuel supply structure in multiple throttle body

Publications (1)

Publication Number Publication Date
JP2007170257A true JP2007170257A (en) 2007-07-05

Family

ID=38297133

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005368171A Pending JP2007170257A (en) 2005-12-21 2005-12-21 Fuel supply structure in multiple throttle body

Country Status (1)

Country Link
JP (1) JP2007170257A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009236099A (en) * 2008-03-28 2009-10-15 Honda Motor Co Ltd Fuel distribution apparatus for v-type engine
CN103306874A (en) * 2012-03-14 2013-09-18 本田技研工业株式会社 Fuel feeding device for engine
JP2016142227A (en) * 2015-02-04 2016-08-08 株式会社デンソー Delivery pipe

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009236099A (en) * 2008-03-28 2009-10-15 Honda Motor Co Ltd Fuel distribution apparatus for v-type engine
CN103306874A (en) * 2012-03-14 2013-09-18 本田技研工业株式会社 Fuel feeding device for engine
JP2016142227A (en) * 2015-02-04 2016-08-08 株式会社デンソー Delivery pipe
WO2016125440A1 (en) * 2015-02-04 2016-08-11 株式会社デンソー Delivery pipe
CN107110091A (en) * 2015-02-04 2017-08-29 株式会社电装 Delivery pipe
CN107110091B (en) * 2015-02-04 2019-08-16 株式会社电装 Delivery pipe

Similar Documents

Publication Publication Date Title
US7757711B2 (en) Flow controller
JP5561496B2 (en) Flow control valve and its assembly method
AU2005248347A1 (en) Banjo fitting
CN106287041A (en) Screw element on throttle body adapter
JP2007170257A (en) Fuel supply structure in multiple throttle body
WO2006051742A1 (en) Valve holding member
JP5324224B2 (en) Fuel injector nozzle with tip alignment device
US20090107564A1 (en) Relief valve
KR101324957B1 (en) Flow rate control valve
US20040178382A1 (en) Ball valve
JP2006233806A (en) Fuel delivery pipe
JP4694891B2 (en) Variable position valve mechanism
JP2005076477A (en) Delivery pipe
JP3747272B2 (en) Mounting device for fuel injection valve in fuel injection device for V-type engine
KR101107551B1 (en) Butterfly valve enableing to maintain sealing pressrue
KR20090103454A (en) Improvement ball valve for boiler
JP2008151323A (en) Resin tube embedded type valve and connection construction of valve and resin tube
JP7343959B2 (en) Drain pipe fittings and how to connect drain pipes
JP3909482B2 (en) Fuel distribution pipes in fuel injectors
JP7366644B2 (en) valve device
JP4794493B2 (en) Throttle body in fuel injector
JP6502197B2 (en) Valve structure
JP4909117B2 (en) Eccentric tube and hot water mixing faucet equipped with the same
JP2002340223A (en) Valve
JPWO2004092625A1 (en) Butterfly valve