JP2000104636A - Fuel supplying device for internal combustion engine - Google Patents

Fuel supplying device for internal combustion engine

Info

Publication number
JP2000104636A
JP2000104636A JP10271125A JP27112598A JP2000104636A JP 2000104636 A JP2000104636 A JP 2000104636A JP 10271125 A JP10271125 A JP 10271125A JP 27112598 A JP27112598 A JP 27112598A JP 2000104636 A JP2000104636 A JP 2000104636A
Authority
JP
Japan
Prior art keywords
fuel
delivery pipe
pulsation damper
combustion engine
internal combustion
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
JP10271125A
Other languages
Japanese (ja)
Inventor
Shinichi Nanba
伸一 難波
Daisuke Uotani
大輔 魚谷
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.)
Daihatsu Motor Co Ltd
Original Assignee
Daihatsu Motor 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 Daihatsu Motor Co Ltd filed Critical Daihatsu Motor Co Ltd
Priority to JP10271125A priority Critical patent/JP2000104636A/en
Publication of JP2000104636A publication Critical patent/JP2000104636A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04Devices damping pulsations or vibrations in fluids

Abstract

PROBLEM TO BE SOLVED: To simplify the structure, and lower the fuel leakage by fitting a pulsation damper while providing a fitting part in a fuel delivery pipe connected to each air-cylinder of an internal combustion engine, and fixing a socket for connecting a fuel supply hose to the delivery pipe to the pulsation damper. SOLUTION: A fitting part 7 provided with a flange 7a is integrally provided with one end of a fuel delivery pipe 4, and a connecting flange 6e of a pulsation damper 6 is fastened to the flange 7a, and the separation damper 6 is fitted to the fitting part 7 freely to be disconnected so that the inside of a fuel chamber 6a is communicated with the inside of the fuel delivery pipe 4. On the other hand, a socket tube 9 is fixed to the fuel chamber 6a of the separation damper 6, and a fuel supply hose 5 is inserted into the socket tube 9 for connection from a fuel pump. Since the pulse inside the fuel delivery pipe is transmitted to the pulsation damper 6, this pulse can be surely lowered by the pulsation damper 6.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、燃料噴射型の内燃
機関において、その各気筒ごとの燃料噴射弁に燃料を分
配するための燃料デリバリパイプに対する燃料供給装置
に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel supply device for a fuel delivery pipe for distributing fuel to a fuel injection valve for each cylinder in a fuel injection type internal combustion engine.

【0002】[0002]

【従来の技術】燃料噴射型の内燃機関において、燃料を
各気筒ごとの燃料噴射弁に分配するための燃料デリバリ
パイプ内における燃料圧力には、前記各燃料噴射弁の開
閉作動による脈動が存在することにより、空燃比の変動
等の不具合が発生する。そこで、前記燃料デリバリパイ
プには、例えば、実開昭60−110676号公報等に
記載されているように、ダイヤフラムを使用したパルセ
ーションダンパを設けることによって、その内部におけ
る燃料圧力の脈動を低減するように構成している。
2. Description of the Related Art In a fuel injection type internal combustion engine, there is a pulsation in the fuel pressure in a fuel delivery pipe for distributing fuel to fuel injection valves for each cylinder due to the opening and closing operations of the fuel injection valves. As a result, a problem such as a change in the air-fuel ratio occurs. Therefore, the fuel delivery pipe is provided with a pulsation damper using a diaphragm as described in, for example, Japanese Utility Model Application Laid-Open No. S60-110676, so that the pulsation of the fuel pressure inside the fuel delivery pipe is reduced. It is configured as follows.

【0003】[0003]

【発明が解決しようとする課題】しかし、従来の装置で
は、燃料デリバリパイプに、二つの取付け部を設け、こ
の両取付け部のうち一方の取付け部に対して燃料供給ホ
ースの接続用ソケット管をフランジ接合により着脱自在
に取付け、他方のフランジ型取付け部に対してパルセー
ションダンパをフランジ接合により着脱自在に取付ける
と言う構成にしている。
However, in the conventional apparatus, two attachment portions are provided on the fuel delivery pipe, and a socket tube for connecting a fuel supply hose is provided to one of the two attachment portions. The structure is such that the pulsation damper is detachably attached to the other flange-type attachment portion by flange connection.

【0004】このために、前記燃料デリバリパイプに
は、燃料供給ホースの接続用ソケット管に対する取付け
部と、パルセーションダンパに対する取付け部との二つ
の取付け部を設けると言う構成にしなければならないか
ら、燃料デリバリパイプの構造の複雑化及び大型化を招
来するばかりか、部品点数が多くなり、しかも、燃料の
漏れが発生する箇所が多くなると言う問題があった。
[0004] For this purpose, the fuel delivery pipe must be provided with two attachment parts, an attachment part to the connection socket tube of the fuel supply hose and an attachment part to the pulsation damper. Not only does the structure and size of the fuel delivery pipe become complicated, but also the number of parts increases, and the number of locations where fuel leakage occurs increases.

【0005】本発明は、これらの問題を解消した燃料供
給装置を提供することを技術的課題とするものである。
[0005] It is an object of the present invention to provide a fuel supply apparatus which solves these problems.

【0006】[0006]

【課題を解決するための手段】この技術的課題を達成す
るため本発明は、「内燃機関における各気筒ごとへの燃
料噴射弁に燃料を分配する燃料デリバリパイプに、一つ
の取付け部を設けて、この取付け部に、パルセーション
ダンパを取付け、このパルセーションダンパに、前記燃
料デリバリパイプへの燃料供給ホースの接続用ソケット
管を固着する。」と言う構成にした。
According to the present invention, there is provided a fuel delivery pipe for distributing fuel to a fuel injection valve for each cylinder in an internal combustion engine. A pulsation damper is attached to the attachment portion, and a socket pipe for connecting a fuel supply hose to the fuel delivery pipe is fixed to the pulsation damper. "

【0007】[0007]

【発明の作用・効果】このように構成にすると、燃料供
給ホースからの燃料は、パルセーションダンパを介して
燃料デリバリパイプ内に供給されるが、この燃料デリバ
リパイプ内における脈動は、パルセーションダンパにも
伝わるので、この脈動を、パルセーションダンパにて確
実に低減することができる。
With this configuration, the fuel from the fuel supply hose is supplied into the fuel delivery pipe via the pulsation damper, and the pulsation in the fuel delivery pipe is reduced by the pulsation damper. This pulsation can be reliably reduced by the pulsation damper.

【0008】そして、前記燃料デリバリパイプには、一
つの取付け部を設けるだけで良いから、燃料デリバリパ
イプの構造を簡単化できると共に、軽量化でき、しか
も、部品点数を少なくでき、その上、燃料の漏れが発生
する箇所も少なくできるのである。
The fuel delivery pipe need only be provided with one mounting portion, so that the structure of the fuel delivery pipe can be simplified, lightened, and the number of parts can be reduced. This can reduce the number of places where leakage occurs.

【0009】[0009]

【発明の実施の形態】以下、本発明の実施の形態を、図
1及び図2の図面について説明する。この図において、
符号1は内燃機関を示し、この内燃機関1には、各気筒
2ごとに燃料噴射弁3が設けられている。また、符号4
は、図示しない燃料ポンプから燃料供給ホース5を介し
て送られてくる燃料を前記各燃料噴射弁3に分配するた
めの燃料デリバリパイプを示す。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In this figure,
Reference numeral 1 denotes an internal combustion engine, in which a fuel injection valve 3 is provided for each cylinder 2. Also, reference numeral 4
3 shows a fuel delivery pipe for distributing fuel sent from a fuel pump (not shown) via a fuel supply hose 5 to each of the fuel injection valves 3.

【0010】更にまた、符号6は、ダイヤフラム式のパ
ルセーションダンパを示し、このパルセーションダンパ
6は、燃料室6aと大気に連通の空気室6bとに区画す
るダイヤフラム6cを備え、このダイヤフラム6cを、
前記空気室6b内に装着したばね6dにて支持し、且
つ、前記燃料室6aの外側に接続用フランジ6eを一体
的に固着したものに構成されている。
Further, reference numeral 6 denotes a diaphragm type pulsation damper. The pulsation damper 6 includes a diaphragm 6c for partitioning a fuel chamber 6a and an air chamber 6b communicating with the atmosphere. ,
The fuel chamber 6a is supported by a spring 6d mounted in the air chamber 6b, and a connecting flange 6e is integrally fixed to the outside of the fuel chamber 6a.

【0011】そして、前記燃料デリバリパイプ4の一端
に、フランジ7aを備えた取付け部7を一体的に設け
て、この取付け部7におけるフランジ7aに、前記パル
セーションダンパ6における接続用フランジ6eをボル
ト8にて締結することにより、前記燃料デリバリパイプ
4に設けた取付け部7に、前記パルセーションダンパ6
を、その燃料室6a内が燃料デリバリパイプ4内に連通
するように着脱自在に取付ける一方、前記パルセーショ
ンダンパ6における燃料室6aにソケット管9を固着し
て、このソケット管9に、前記燃料ポンプから燃料供給
ホース5を差し込み接続すると言う構成にする。
At one end of the fuel delivery pipe 4, a mounting portion 7 having a flange 7a is integrally provided, and the flange 7a of the mounting portion 7 is bolted to a connection flange 6e of the pulsation damper 6. 8, the pulsation damper 6 is attached to the mounting portion 7 provided on the fuel delivery pipe 4.
Is detachably mounted such that the fuel chamber 6a communicates with the fuel delivery pipe 4 while a socket tube 9 is fixed to the fuel chamber 6a of the pulsation damper 6, and the fuel tube is fixed to the socket tube 9. The fuel supply hose 5 is inserted and connected from the pump.

【0012】この構成において、燃料供給ホース5から
の燃料は、パルセーションダンパ6における燃料室6a
を介して燃料デリバリパイプ4内に供給されるが、この
燃料デリバリパイプ内における脈動は、パルセーション
ダンパ6における燃料室6aにも伝わるので、この脈動
を、パルセーションダンパ6におけるダイヤフラム6c
のばね6dに抗しての振動よって確実に低減することが
できる。
In this configuration, the fuel from the fuel supply hose 5 is supplied to the fuel chamber 6a of the pulsation damper 6.
The pulsation in the fuel delivery pipe is also transmitted to the fuel chamber 6a in the pulsation damper 6, so that the pulsation is transmitted to the diaphragm 6c in the pulsation damper 6.
Can be reliably reduced by the vibration against the spring 6d.

【0013】また、前記したように、燃料デリバリパイ
プ4に設けた取付け部7に、パルセーションダンパ6を
取付け、このパルセーションダンパ6に、燃料供給ホー
ス5の接続用ソケット管9を固着したことにより、前記
燃料デリバリパイプ4には、前記パルセーションダンパ
6に対する取付け部7とは別に、接続用ソケット管9に
対する取付け部を設けることを必要せず、一つの取付け
部を設けるだけで良いのである。
Further, as described above, the pulsation damper 6 is attached to the attachment portion 7 provided on the fuel delivery pipe 4, and the connection pipe 9 of the fuel supply hose 5 is fixed to the pulsation damper 6. Accordingly, it is not necessary to provide the fuel delivery pipe 4 with a mounting portion for the connection socket tube 9 separately from the mounting portion 7 for the pulsation damper 6, and it is sufficient to provide only one mounting portion. .

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施の形態を示す概略平面図である。FIG. 1 is a schematic plan view showing an embodiment of the present invention.

【図2】図1の要部拡大断面図である。FIG. 2 is an enlarged sectional view of a main part of FIG.

【符号の説明】[Explanation of symbols]

1 内燃機関 2 気筒 3 燃料噴射弁 4 燃料デリバリパイプ 5 燃料供給ホース 6 パルセーションダン
パ 6a パルセーションダン
パの燃料室 7 取付け部 9 ソケット管
DESCRIPTION OF SYMBOLS 1 Internal combustion engine 2 Cylinder 3 Fuel injection valve 4 Fuel delivery pipe 5 Fuel supply hose 6 Pulsation damper 6a Pulsation damper fuel chamber 7 Mounting part 9 Socket pipe

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) F16L 55/04 F16L 55/04 Fターム(参考) 3G066 AA01 AB02 AD10 BA12 BA35 BA61 BA63 CB01 CB03 CB12 CB18 CD04 3H025 CA02 CB26 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) F16L 55/04 F16L 55/04 F-term (Reference) 3G066 AA01 AB02 AD10 BA12 BA35 BA61 BA63 CB01 CB03 CB12 CB18 CD04 3H025 CA02 CB26

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】内燃機関における各気筒ごとへの燃料噴射
弁に燃料を分配する燃料デリバリパイプに、一つの取付
け部を設けて、この取付け部に、パルセーションダンパ
を取付け、このパルセーションダンパに、前記燃料デリ
バリパイプへの燃料供給ホースの接続用ソケット管を固
着したことを特徴とする内燃機関における燃料供給装
置。
A fuel delivery pipe for distributing fuel to a fuel injection valve for each cylinder in an internal combustion engine is provided with one mounting portion, and a pulsation damper is mounted on the mounting portion, and the pulsation damper is mounted on the mounting portion. A fuel supply device for an internal combustion engine, wherein a socket tube for connecting a fuel supply hose to the fuel delivery pipe is fixed.
JP10271125A 1998-09-25 1998-09-25 Fuel supplying device for internal combustion engine Pending JP2000104636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10271125A JP2000104636A (en) 1998-09-25 1998-09-25 Fuel supplying device for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10271125A JP2000104636A (en) 1998-09-25 1998-09-25 Fuel supplying device for internal combustion engine

Publications (1)

Publication Number Publication Date
JP2000104636A true JP2000104636A (en) 2000-04-11

Family

ID=17495688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10271125A Pending JP2000104636A (en) 1998-09-25 1998-09-25 Fuel supplying device for internal combustion engine

Country Status (1)

Country Link
JP (1) JP2000104636A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008126842A1 (en) * 2007-04-10 2008-10-23 Toyota Jidosha Kabushiki Kaisha Fuel supply device for internal combustion engine
WO2022209629A1 (en) * 2021-03-29 2022-10-06 住友理工株式会社 Connector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008126842A1 (en) * 2007-04-10 2008-10-23 Toyota Jidosha Kabushiki Kaisha Fuel supply device for internal combustion engine
US7980225B2 (en) 2007-04-10 2011-07-19 Toyota Jidosha Kabushiki Kaisha Fuel supply device for internal combustion engine
WO2022209629A1 (en) * 2021-03-29 2022-10-06 住友理工株式会社 Connector

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Effective date: 20040106