JPH0320509Y2 - - Google Patents
Info
- Publication number
- JPH0320509Y2 JPH0320509Y2 JP1982043579U JP4357982U JPH0320509Y2 JP H0320509 Y2 JPH0320509 Y2 JP H0320509Y2 JP 1982043579 U JP1982043579 U JP 1982043579U JP 4357982 U JP4357982 U JP 4357982U JP H0320509 Y2 JPH0320509 Y2 JP H0320509Y2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- throttle valve
- fuel
- engine
- intake
- 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.)
- Expired
Links
- 239000000446 fuel Substances 0.000 claims description 26
- 238000011144 upstream manufacturing Methods 0.000 claims description 11
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000000889 atomisation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1005—Details of the flap
- F02D9/101—Special flap shapes, ribs, bores or the like
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Description
【考案の詳細な説明】
本考案は、エンジンのスロツトルバルブ、特に
バタフライ型のスロツトルバルブに関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a throttle valve for an engine, particularly a butterfly type throttle valve.
従来、平板状のバタフライ型スロツトルバルブ
は、実開昭55−125952号公報にも開示されている
ように公知である。 Conventionally, flat butterfly type throttle valves are known as disclosed in Japanese Utility Model Application No. 125952/1983.
そして一般に、上記のようなスロツトルバルブ
においては、そのほぼ中央部がシヤフトに固着さ
れ、吸気通路内で回動することにより上記吸気通
路の面積を増減し、吸気量を制御するように構成
されている。 In general, the above-mentioned throttle valve is configured such that its substantially central portion is fixed to the shaft and rotates within the intake passage to increase or decrease the area of the intake passage, thereby controlling the intake air amount. ing.
ところが、上記のようなスロツトルバルブを吸
気通路の燃焼供給装置下流に配設して、エンジン
の燃料室に供給される混合気量を制御するように
構成した場合においては、種々の問題を招いてい
るものであつた。 However, when the throttle valve as described above is arranged downstream of the combustion supply device in the intake passage to control the amount of air-fuel mixture supplied to the fuel chamber of the engine, various problems arise. It was something I was wearing.
すなわち、上記スロツトルバルブの開度が比較
的小さい場合、エアクリーナを介して吸入される
空気と上記燃料供給装置から供給される燃料との
混合気のほとんどが、一度上記バルブの上流面に
当たり、スロツトルバルブ先端と吸気筒との間の
絞られた隙間を通つてエンジンの燃焼室に導かれ
る。 That is, when the opening degree of the throttle valve is relatively small, most of the mixture of air taken in through the air cleaner and fuel supplied from the fuel supply device once hits the upstream surface of the valve, and the throttle valve It is guided into the engine's combustion chamber through the narrow gap between the tip of the tutle valve and the intake cylinder.
そして上記過程において、スロツトルバルブの
上流面に当たつた混合気中の燃料は、上記バルブ
の上流面で液滴下し吸気流によつてあらゆる方向
に吹き飛ばされ、その一部は吸気通路内壁との間
隔が極小であるバルブ両端の回動中心部を介して
上記通路内壁に付着して、そのまま微粒化されず
に吸気流等によつて燃焼室に供給される。 In the above process, the fuel in the air-fuel mixture that hits the upstream face of the throttle valve drops into droplets on the upstream face of the valve and is blown off in all directions by the intake air flow, with some of it hitting the inner wall of the intake passage. The particles adhere to the inner wall of the passage through the center of rotation at both ends of the valve, where the distance between them is extremely small, and are supplied to the combustion chamber by the intake air flow or the like without being atomized.
その結果、燃料の微粒化が悪くなり未燃成分を
増大させたり、また再始動性を悪化させたりする
といつた問題を招いているものであつた。 As a result, the atomization of the fuel deteriorates, leading to problems such as an increase in unburned components and a worsening of restartability.
そこで本考案は、上記のような問題点に着目し
てなされたものであり、燃料供給装置下流に配置
されたバタフライ型スロツトルバルブの上流面に
複数の案内溝を設け、該複数の案内溝が各々スロ
ツトルバルブ開口時にバルブの最下方側に位置す
るバルブ周縁部からバルブ上方側に放射状に連続
的にバルブ周縁部まで指向形成することにより、
一旦案内溝に導いたすべての付着燃料を確実に、
吸気通路内壁から比較的離れ、吸気流速の最も速
い位置である最下方側のバルブ周縁部に導き、上
記燃料の気化、霧化の促進を図る案内溝を形成し
たスロツトルバルブを提供するものである。 Therefore, the present invention was devised by focusing on the above-mentioned problems, and a plurality of guide grooves are provided on the upstream surface of a butterfly-type throttle valve disposed downstream of the fuel supply device. are formed in a continuous radial direction upwardly from the valve periphery located at the lowermost side of the valve when the throttle valve is opened, to the valve periphery.
Once all the adhering fuel has been guided into the guide groove,
The present invention provides a throttle valve in which a guide groove is formed that is relatively distant from the inner wall of the intake passage and guides the fuel to the lowermost peripheral edge of the valve where the intake flow rate is highest, thereby promoting vaporization and atomization of the fuel. be.
以下、本考案の実施例を図面に基づいて説明す
る。 Hereinafter, embodiments of the present invention will be described based on the drawings.
第１図において、１は上流部をエアクリーナ
（図示せず）にそして下流部をエンジンの燃焼室
（図示せず）にそれぞれ連通し、内部に吸気通路
２が形成された吸気筒である。 In FIG. 1, reference numeral 1 denotes an intake cylinder having an upstream portion communicating with an air cleaner (not shown) and a downstream portion communicating with an engine combustion chamber (not shown), and having an intake passage 2 formed therein.
そして、３は吸気筒１の吸気通路２内に形成さ
れた大ベンチユリー、４は大ベンチユリー３内に
配置された小ベンチユリー、５は小ベンチユリー
４内に開口した主燃料ノズルであり、これら大ベ
ンチユリー３、小ベンチユリー４、および主燃料
ノズル５は燃料供給装置の一部を構成するもので
ある。 Reference numeral 3 indicates a large vent turret formed in the intake passage 2 of the intake cylinder 1, numeral 4 indicates a small vent turret located within the large vent turret 3, and numeral 5 indicates a main fuel nozzle opened in the small vent turret 4. 3, the small vent 4, and the main fuel nozzle 5 constitute a part of the fuel supply system.
また、６は吸気筒１の大ベンチユリー３下方に
回動自在に支承されたシヤフト、７はシヤフト６
に固着され、該シヤフト６とともに回動して吸気
通路２の通路面積を増減するバタフライ型のスロ
ツトルバルブである。 Further, 6 is a shaft rotatably supported below the large vent turret 3 of the intake cylinder 1, and 7 is a shaft 6.
This is a butterfly-type throttle valve which is fixed to the shaft 6 and rotates together with the shaft 6 to increase or decrease the passage area of the intake passage 2.
そして、上記バルブ７の上流面７ａには第２図
に詳しく示すように、案内溝７ｂ，７ｂ……がバ
ルブ周縁部で、かつ下方部７ｄから上方側に放射
状に形成されており、さらに上記案内溝７ｂ，７
ｂ，……の底部には、燃料吹出孔７ｆ，７ｆ，…
…が適宜間隔をあけてバルブ７を貫通して設けら
れている。 As shown in detail in FIG. 2, on the upstream surface 7a of the valve 7, guide grooves 7b, 7b, . Guide grooves 7b, 7
At the bottom of b,... are fuel blow-off holes 7f, 7f,...
... are provided passing through the valve 7 at appropriate intervals.
次に、以上のように構成した本考案における、
エンジンのスロツトルバルブの作用について説明
する。 Next, in the present invention configured as above,
The function of the engine throttle valve will be explained.
まず、第１図および第２図に示したスロツトル
バルブ７の作用について説明すると、該バルブ７
の開度が比較的小さい場合においては、大ベンチ
ユリー３および小ベンチユリー４によつて発生す
る負圧により、主燃料ノズル５から吸出する完全
に微粒化していない燃料のほとんどがバルブ７の
上流面７ａに当たり、その流量が制御される。 First, the operation of the throttle valve 7 shown in FIGS. 1 and 2 will be explained.
When the opening degree of the valve 7 is relatively small, most of the fuel that is not completely atomized and sucked out from the main fuel nozzle 5 is transferred to the upstream surface 7a of the valve 7 due to the negative pressure generated by the large ventilator 3 and the small ventilator 4. The flow rate is controlled.
その際、上記上流面７ａに燃料が付着そして液
滴下し、該燃料は吸気流によつて案内溝７ｂ，７
ｂ，……へと導かれる。 At that time, fuel adheres to the upstream surface 7a and drips, and the fuel is transferred to the guide grooves 7b and 7 by the intake air flow.
b, lead to...
そして、上記燃料の一部は燃料吹出孔７ｆ，７
ｆ，……から吹出されて微粒化し、さらに残りの
燃料は下方部７ｄに吸気流等によつて導かれる。
下方部７ｄはバルブ周縁部７ｃでは吸気通路２か
ら最も離れた位置であり、吸気流速の速い位置で
もある。よつて、液滴状燃料がバルブ周縁部７ｃ
で、かつ下方部７ｄから落下するとき比較的通路
内壁に付着しにくく、吸気流により微粒化され
る。 Then, a part of the fuel is supplied to the fuel outlet holes 7f, 7.
The remaining fuel is blown out from f, .
The lower part 7d is the farthest position from the intake passage 2 in the valve peripheral part 7c, and is also the position where the intake flow rate is high. Therefore, the droplet-shaped fuel forms on the valve peripheral portion 7c.
And when falling from the lower part 7d, it is relatively difficult to adhere to the inner wall of the passage, and is atomized by the intake air flow.
以上説明したように、本考案におけるエンジン
のスロツトルバルブによれば、特に該バルブの開
度が比較的小さい場合に、バルブ上流から供給さ
れ、そしてバルブに付着、成長した液滴状燃料の
気化、霧化の促進が簡単な構造でもつて図れその
効果は非常に大きいものである。 As explained above, according to the engine throttle valve of the present invention, especially when the opening degree of the valve is relatively small, droplet-shaped fuel that is supplied from upstream of the valve and that adheres to and grows on the valve is vaporized. , the atomization can be promoted even with a simple structure, and the effect is very large.
図面は本考案におけるエンジンのスロツトルバ
ルブの実施例を示し、第１図は上記バルブを吸気
通路に配設した状態を示す断面図、第２図は第１
図における斜視図である。
２……吸気通路、７……スロツトルバルブ、７
ａ……上流面、７ｂ……案内溝、７ｃ……バルブ
周縁部、７ｄ……下方部。
The drawings show an embodiment of the throttle valve for an engine according to the present invention, and FIG. 1 is a cross-sectional view showing the valve installed in the intake passage, and FIG.
It is a perspective view in a figure. 2...Intake passage, 7...Throttle valve, 7
a... Upstream surface, 7b... Guide groove, 7c... Valve peripheral portion, 7d... Lower portion.
Claims (1)
エンジンの燃焼室に供給される混合気量を制御す
るバタフライ型スロツトルバルブにおいて、 上記スロツトルバルブの上流面に複数の案内溝
が各々スロツトルバルブ開口時にバルブの最下方
側に位置するバルブ周縁部からバルブ上方側に放
射状に連続的にバルブ周縁部まで形成されている
ことを特徴とするエンジンのスロツトルバルブ。[Scope of claim for utility model registration] Disposed in the intake passage downstream of the fuel supply device,
In a butterfly-type throttle valve that controls the amount of air-fuel mixture supplied to the combustion chamber of an engine, a plurality of guide grooves are provided on the upstream surface of the throttle valve, each at the periphery of the valve located at the lowermost side of the valve when the throttle valve is opened. What is claimed is: 1. A throttle valve for an engine, characterized in that the throttle valve is formed continuously in a radial direction from the upper side of the valve to the peripheral edge of the valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4357982U JPS58146048U (en) | 1982-03-26 | 1982-03-26 | engine throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4357982U JPS58146048U (en) | 1982-03-26 | 1982-03-26 | engine throttle valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58146048U JPS58146048U (en) | 1983-10-01 |
| JPH0320509Y2 true JPH0320509Y2 (en) | 1991-05-02 |
Family
ID=30054660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4357982U Granted JPS58146048U (en) | 1982-03-26 | 1982-03-26 | engine throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58146048U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5988236B2 (en) * | 2011-08-30 | 2016-09-07 | 俊彦 山本 | Engine intake system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3298677A (en) * | 1964-04-20 | 1967-01-17 | Champion Spark Plug Co | Throttle valve for internal combustion engines |
| JPS52137535A (en) * | 1976-05-14 | 1977-11-17 | Fuji Heavy Ind Ltd | Carburetor |
| JPS5835263A (en) * | 1981-08-25 | 1983-03-01 | Mitsubishi Electric Corp | Fuel-air mixture supply system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5918114Y2 (en) * | 1978-10-07 | 1984-05-25 | 日産自動車株式会社 | Air-fuel ratio control device for internal combustion engines |
-
1982
- 1982-03-26 JP JP4357982U patent/JPS58146048U/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3298677A (en) * | 1964-04-20 | 1967-01-17 | Champion Spark Plug Co | Throttle valve for internal combustion engines |
| JPS52137535A (en) * | 1976-05-14 | 1977-11-17 | Fuji Heavy Ind Ltd | Carburetor |
| JPS5835263A (en) * | 1981-08-25 | 1983-03-01 | Mitsubishi Electric Corp | Fuel-air mixture supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58146048U (en) | 1983-10-01 |
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