JPH02259321A - Ultrasonic injection valve - Google Patents

Ultrasonic injection valve

Info

Publication number
JPH02259321A
JPH02259321A JP8069189A JP8069189A JPH02259321A JP H02259321 A JPH02259321 A JP H02259321A JP 8069189 A JP8069189 A JP 8069189A JP 8069189 A JP8069189 A JP 8069189A JP H02259321 A JPH02259321 A JP H02259321A
Authority
JP
Japan
Prior art keywords
fuel supply
cylinder
circumference
injection valve
circumferential 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
JP8069189A
Other languages
Japanese (ja)
Inventor
Yasuji Kobayashi
泰次 小林
Daijiro Hosogai
細貝　大次郎
Jo Higashimoto
東本　上
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.)
Tonen General Sekiyu KK
Original Assignee
Tonen 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 Tonen Corp filed Critical Tonen Corp
Priority to JP8069189A priority Critical patent/JPH02259321A/en
Priority to US07/501,988 priority patent/US4986248A/en
Priority to DE9090303474T priority patent/DE69001084T2/en
Priority to EP90303474A priority patent/EP0390603B1/en
Publication of JPH02259321A publication Critical patent/JPH02259321A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fuel-Injection Apparatus (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)

Abstract

PURPOSE:To make a uniform atomization in an ultrasonic injection valve for a burner or the like by a method wherein a circumferential groove is formed at an outer circumference of a cylinder of the injecting valve with an optional angular range on the circumference being left, a fuel supply sleeve having a fuel supply hole is fitted and fixed to the cylinder and a nozzle part is formed at an entire circumference of the cylinder. CONSTITUTION:An outer circumference of a cylinder 1 forms a circumferential groove 4 with an optional angular range being left on the circumference, a fuel supply sleeve 2 having a fuel supply hole 5 formed therein is fitted and fixed so as to form a nozzle part 6 at an circumference of a vibrator element horn 3. At this time, a portion having no circumferential groove 4 formed therein is positioned at a side opposite to the fuel supply hole 5. With such a configuration as above, even if the liquid is not pressurized and supplied through a solenoid valve not shown, it is possible to prevent the liquid from being over- turned in a direction opposite to the supplying direction and then a uniform atomization can be attained over an entire circumference of the cylinder.

Description

【発明の詳細な説明】[Detailed description of the invention]

〔産業上の利用分野〕 本発明は、内燃機関、バーナ等に使用され液体燃料を微
粒化させるための超音波噴射弁に関する。 〔従来の技術〕 従来、液体燃料を微粒化させるための超音波噴射弁とし
て第４図に示す円環式超音波噴射弁が知られている。こ
れは、シリンダ１０１、燃料供給スリーブ１０２および
振動子ホーン１０３からなり、シリンダ１０１の外周に
は全周にわたって円周溝１０４を形成し、また、燃料供
給スリーブ１０２には、燃料供給孔１０５を形成し、燃
料供給スリーブ１０２をシリンダ１０１に嵌合固定する
ことにより、振動子ホーン１０３の全周にわたってノズ
ル部１０６を形成し、燃料を振動子ホーン１０３に供給
し燃料を微粒化するものである。 〔発明が解決しようとする課題〕 しかしながら、上記超音波噴射弁においては、燃料供給
孔１０５には、電磁弁で液を加圧供給するが、燃料供給
スリーブ１０２内に液が入ってから慣性力によって燃料
供給孔１０５とは反対方向に液が回り過ぎるため、ノズ
ル部１０６の全周に液体を均一に分配することが困難で
あり、従って、振動子ホーン１０３の全周に均一な液が
供給されず、噴霧が片寄り空気との均一な混合、安定し
た燃焼が得られないという問題を有している。 特に、１つの超音波噴射弁により生成した混合気を多気
筒のシリンダに分配する方式のガソリンエンジンにおい
ては、混合気の均一性が損なわれると、燃焼の悪化、排
気エミッシッンの増大を引き起こすため、均一な燃料の
霧化、混合が重要な１１１ｆｉとなる。 本発明の目的は、上記問題を解決するものであって、振
動子ホーンの全周にわたって均一に微粒化を行うことが
できる超音波噴射弁を提供することである。[Industrial Application Field] The present invention relates to an ultrasonic injection valve for atomizing liquid fuel used in internal combustion engines, burners, etc. [Prior Art] Conventionally, an annular ultrasonic injection valve shown in FIG. 4 has been known as an ultrasonic injection valve for atomizing liquid fuel. This consists of a cylinder 101, a fuel supply sleeve 102, and a vibrator horn 103. A circumferential groove 104 is formed on the outer circumference of the cylinder 101 over the entire circumference, and a fuel supply hole 105 is formed in the fuel supply sleeve 102. By fitting and fixing the fuel supply sleeve 102 to the cylinder 101, a nozzle portion 106 is formed over the entire circumference of the vibrator horn 103, and fuel is supplied to the vibrator horn 103 to atomize the fuel. [Problems to be Solved by the Invention] However, in the above-described ultrasonic injection valve, liquid is pressurized and supplied to the fuel supply hole 105 by the electromagnetic valve, but after the liquid enters the fuel supply sleeve 102, inertial force Because the liquid rotates too much in the opposite direction to the fuel supply hole 105, it is difficult to distribute the liquid uniformly around the entire circumference of the nozzle portion 106. Therefore, it is difficult to uniformly distribute the liquid around the entire circumference of the vibrator horn 103. The problem is that the spray is not mixed uniformly with the air and stable combustion cannot be achieved. In particular, in gasoline engines that distribute the air-fuel mixture generated by one ultrasonic injection valve to multiple cylinders, loss of air-fuel mixture uniformity causes deterioration in combustion and an increase in exhaust emissions. Uniform fuel atomization and mixing are important 111fi. SUMMARY OF THE INVENTION An object of the present invention is to provide an ultrasonic injection valve that solves the above problems and can uniformly atomize the entire circumference of a vibrator horn.

【課題を解決するための手段】[Means to solve the problem]

そのために本発明の超音波噴射弁は、シリンダ１、燃料
供給スリーブ２および振動子ホーン３からなり、前記シ
リンダｌの外周には円周溝４を、円周上任意の角度を残
して形成し、前記燃料供給スリーブ２には、燃料供給孔
５を形成し、燃料供給スリーブ２をシリンダ１に嵌合固
定することにより、振動子ホーン３の全周にわたってノ
ズル部６を形成することを特徴とする。 なお、上記構成に付加した番号は図面と対比させるため
のものであり、これにより本発明の構成が何ら限定され
るものではない。 〔作用〕 本発明においては、燃料供給孔５の反対側には、円周溝
４を設けないため、電磁弁により液を加圧供給した場合
でも、液供給側と反対方向に液が周り過ぎることがなく
、ノズル部６から振動子ホーン３に供給される液は、円
周上にわたり均一になる。また、円周溝４の加工する角
度を変えることにより、噴霧の均一化が図られ、また用
途によっては円周上での噴霧の濃淡を付けることができ
る。 〔実施例〕 以下、本発明の実施例を図面を参照しつつ説明する。第
１図は本発明の超音波噴射弁の１実施例を示す断面図、
第２図は第１図の■−■線に沿う断面図、第３図は本発
明の超音波噴射弁をエンジンに通用した断面図である。 超音波噴射弁は、シリンダ１、燃料供給スリーブ２およ
び振動子ホーン３からなり、シリンダ１の外周には円周
溝４を、第２図（ａ）〜（Ｃ）に示すように円周上任意
の角度を残して形成し、また、燃料供給スリーブ２には
、燃料供給孔５を形成し、燃料供給スリーブ２をシリン
ダ１に嵌合固定することにより、振動子ホーン３の全周
にわたってノズル部６を形成している。燃料は図示しな
い電磁弁により、燃料供給孔５、円周溝４、ノズル部６
を経て振動子ホーン３に供給され燃料を微粒化するもの
である。 本発明においては、燃料供給孔５の反対側には、円周溝
４を設けないため、電磁弁により液を加圧供給した場合
でも、液供給側と反対方向に液が周り過ぎることがなく
、ノズル部６から振動子ホーン３に供給される液は、円
周上にわたり均一になる。また、円周溝４の加工する角
度を変えることにより、噴霧の均一化が図られ、また用
途によっては円周上での噴霧の濃淡を付けることができ
る。 第３図は、本発明の超音波噴射弁をエンジンに適用した
例を示している０図中、１１はシリンダ、１２はピスト
ン、１３は吸気弁、１４は排気弁、１５は吸気管、１６
は排気管を示し、吸気管１５には、上記した超音波噴射
弁１７および燃料噴射弁１８が取付けられている。そし
て、振動子ホーン３を、吸気弁１６に向けて配置すると
共に、第１図および第２図に示したシリンダｌおよび燃
料供給スリーブ２の構造にすることにより、噴霧角度θ
を調節することができ、これによや吸気管１５への燃料
液滴の付着を防止することができる。 【発明の効果〕 以上のように本発明によれば、振動子ホーンの全周にわ
たって均一に微粒化を行うことができ、均一な全周状噴
霧を得ることができる。また、円周溝４の加工する角度
を変えることにより、噴霧の均一化が図られ、また、用
途によっては円周上での噴霧の濃淡を付けることができ
る。To this end, the ultrasonic injection valve of the present invention includes a cylinder 1, a fuel supply sleeve 2, and a vibrator horn 3, and a circumferential groove 4 is formed on the outer periphery of the cylinder 1, leaving an arbitrary angle on the circumference. , a fuel supply hole 5 is formed in the fuel supply sleeve 2, and by fitting and fixing the fuel supply sleeve 2 to the cylinder 1, a nozzle portion 6 is formed over the entire circumference of the vibrator horn 3. do. Note that the numbers added to the above configurations are for comparison with the drawings, and the configurations of the present invention are not limited thereby. [Function] In the present invention, since the circumferential groove 4 is not provided on the side opposite to the fuel supply hole 5, even when the liquid is supplied under pressure by the solenoid valve, the liquid does not circulate too much in the opposite direction to the liquid supply side. Therefore, the liquid supplied from the nozzle part 6 to the vibrator horn 3 becomes uniform over the circumference. Furthermore, by changing the angle at which the circumferential groove 4 is machined, it is possible to make the spray uniform, and depending on the application, it is possible to vary the density of the spray on the circumference. [Example] Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing one embodiment of the ultrasonic injection valve of the present invention,
FIG. 2 is a sectional view taken along the line ■--■ in FIG. 1, and FIG. 3 is a sectional view of the ultrasonic injection valve of the present invention applied to an engine. The ultrasonic injection valve consists of a cylinder 1, a fuel supply sleeve 2, and a vibrator horn 3. The cylinder 1 has a circumferential groove 4 on its outer circumference, as shown in FIGS. In addition, by forming a fuel supply hole 5 in the fuel supply sleeve 2 and fitting and fixing the fuel supply sleeve 2 to the cylinder 1, the nozzle is formed over the entire circumference of the vibrator horn 3. It forms part 6. Fuel is supplied to the fuel supply hole 5, the circumferential groove 4, and the nozzle part 6 by a solenoid valve (not shown).
The fuel is supplied to the vibrator horn 3 through the oscillator horn 3 to atomize the fuel. In the present invention, since the circumferential groove 4 is not provided on the opposite side of the fuel supply hole 5, even when the liquid is supplied under pressure by the solenoid valve, the liquid does not circulate too much in the opposite direction to the liquid supply side. The liquid supplied from the nozzle part 6 to the vibrator horn 3 becomes uniform over the circumference. Furthermore, by changing the angle at which the circumferential groove 4 is machined, it is possible to make the spray uniform, and depending on the application, it is possible to vary the density of the spray on the circumference. FIG. 3 shows an example in which the ultrasonic injection valve of the present invention is applied to an engine. In the figure, 11 is a cylinder, 12 is a piston, 13 is an intake valve, 14 is an exhaust valve, 15 is an intake pipe, 16
indicates an exhaust pipe, and the above-mentioned ultrasonic injection valve 17 and fuel injection valve 18 are attached to the intake pipe 15. By arranging the vibrator horn 3 toward the intake valve 16 and using the structure of the cylinder l and fuel supply sleeve 2 shown in FIGS. 1 and 2, the spray angle θ
This can prevent fuel droplets from adhering to the intake pipe 15. [Effects of the Invention] As described above, according to the present invention, atomization can be uniformly performed over the entire circumference of the vibrator horn, and uniform spray can be obtained over the entire circumference. Furthermore, by changing the angle at which the circumferential groove 4 is machined, the spray can be made uniform, and depending on the application, the spray can be made more dense on the circumference.

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

第１図は本発明の超音波噴射弁の１実施例を示す断面図
、第２図は第１図のｎ−ｎ５に沿う断面図、第３図は本
発明の超音波噴射弁をエンジンに適用した断面図、第４
図は従来の超音波噴射弁を示す断面図である。 ｌ・・・シリンダ、２・・・燃料供給スリーブ、３・・
・振動子ホーン、 ４・・・円周溝、 ５・・・燃料供給孔、 ６・・・ ノズル部。 出 願 人 東亜燃料工業株式会社Fig. 1 is a cross-sectional view showing one embodiment of the ultrasonic injection valve of the present invention, Fig. 2 is a cross-sectional view taken along line n-n5 in Fig. 1, and Fig. 3 is a cross-sectional view showing an embodiment of the ultrasonic injection valve of the present invention. Applied cross-sectional view, 4th
The figure is a sectional view showing a conventional ultrasonic injection valve. l...Cylinder, 2...Fuel supply sleeve, 3...
- Vibrator horn, 4... Circumferential groove, 5... Fuel supply hole, 6... Nozzle part. Applicant Toa Fuel Industries Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] （１）シリンダ、燃料供給スリーブおよび振動子ホーン
からなる超音波噴射弁において、前記シリンダの外周に
は円周溝を、円周上任意の角度を残して形成し、前記燃
料供給スリーブには、燃料供給孔を形成し、燃料供給ス
リーブをシリンダに嵌合固定することにより、振動子ホ
ーンの全周にわたってノズル部を形成することを特徴と
する超音波噴射弁。(1) In an ultrasonic injection valve consisting of a cylinder, a fuel supply sleeve, and a vibrator horn, a circumferential groove is formed on the outer periphery of the cylinder, leaving an arbitrary angle on the circumference, and the fuel supply sleeve has: An ultrasonic injection valve characterized in that a nozzle portion is formed over the entire circumference of a vibrator horn by forming a fuel supply hole and fitting and fixing a fuel supply sleeve to a cylinder.
JP8069189A 1989-03-30 1989-03-31 Ultrasonic injection valve Pending JPH02259321A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8069189A JPH02259321A (en) 1989-03-31 1989-03-31 Ultrasonic injection valve
US07/501,988 US4986248A (en) 1989-03-30 1990-03-29 Fuel supply system for internal combustion engine using an ultrasonic atomizer
DE9090303474T DE69001084T2 (en) 1989-03-30 1990-03-30 FUEL SUPPLY SYSTEM FOR AN INTERNAL COMBUSTION ENGINE WITH ULTRASONIC SPRAYING.
EP90303474A EP0390603B1 (en) 1989-03-30 1990-03-30 Fuel supply system for internal combustion engine using an ultrasonic atomizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8069189A JPH02259321A (en) 1989-03-31 1989-03-31 Ultrasonic injection valve

Publications (1)

Publication Number Publication Date
JPH02259321A true JPH02259321A (en) 1990-10-22

Family

ID=13725357

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8069189A Pending JPH02259321A (en) 1989-03-30 1989-03-31 Ultrasonic injection valve

Country Status (1)

Country Link
JP (1) JPH02259321A (en)

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