JPH0746764Y2 - Fuel cutoff device for carburetor for internal combustion engine - Google Patents

Fuel cutoff device for carburetor for internal combustion engine

Info

Publication number
JPH0746764Y2
JPH0746764Y2 JP14863389U JP14863389U JPH0746764Y2 JP H0746764 Y2 JPH0746764 Y2 JP H0746764Y2 JP 14863389 U JP14863389 U JP 14863389U JP 14863389 U JP14863389 U JP 14863389U JP H0746764 Y2 JPH0746764 Y2 JP H0746764Y2
Authority
JP
Japan
Prior art keywords
fuel
float
float chamber
carburetor
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.)
Expired - Lifetime
Application number
JP14863389U
Other languages
Japanese (ja)
Other versions
JPH0387957U (en
Inventor
克徳 久間
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.)
Suzuki Motor Corp
Original Assignee
Suzuki Motor 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 Suzuki Motor Corp filed Critical Suzuki Motor Corp
Priority to JP14863389U priority Critical patent/JPH0746764Y2/en
Publication of JPH0387957U publication Critical patent/JPH0387957U/ja
Application granted granted Critical
Publication of JPH0746764Y2 publication Critical patent/JPH0746764Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)

Description

【考案の詳細な説明】 (産業上の利用分野) この考案は、気化器の燃料コックとアウターファイヤー
時の燃料遮断を兼ねた内燃機関用気化器の燃料遮断装置
に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a fuel cutoff device for a carburetor for an internal combustion engine, which also serves as a fuel cock for the carburetor and a fuel cutoff at the time of outer fire.

(従来の技術) 汎用エンジンなど各種の内燃機関に用いる気化器は、フ
ロート室内にフロートを浮かせて、フロートで燃料流入
口を開閉し、フロート室内を一定油面の燃料に保ち、メ
インジェットを通じて、吸気に燃料を吸入させて霧化混
入して吸気ガスにして、機関に供給するようにしてい
る。そして、機関停止中は、フロート室に燃料が流入し
ないように、手動のコックを設けたり、フロート室の燃
料流入口のニードル弁を閉じるようにしている。例え
ば、実開昭63−186956号公報参照。又、アフターファイ
ヤーが起きたときに、機関停止と共にメインジェットを
閉じて、フロート室の燃料が吸気通路に流れないように
している。例えば、実開昭62−93150号公報参照。
(Prior Art) A carburetor used in various internal combustion engines such as a general-purpose engine floats a float in a float chamber, opens and closes a fuel inlet with the float, keeps the fuel in the float chamber at a constant oil level, and inhales air through a main jet. The fuel is sucked into and atomized and mixed into the intake gas to be supplied to the engine. While the engine is stopped, a manual cock is provided and a needle valve at the fuel inlet of the float chamber is closed so that fuel does not flow into the float chamber. See, for example, Japanese Utility Model Publication No. 63-186956. Further, when an afterfire occurs, the main jet is closed when the engine is stopped and the fuel in the float chamber is prevented from flowing into the intake passage. See, for example, Japanese Utility Model Publication No. 62-93150.

(考案が解決しようとする課題) フロート室に流入する燃料を遮断するコックと、アフタ
ーファイヤー時に燃料カットする二つのものを装着する
のは、構造が複雑で製造コストが高くつく。
(Problems to be solved by the invention) Mounting a cock for shutting off the fuel flowing into the float chamber and two for cutting the fuel during after-fire makes the structure complicated and the manufacturing cost high.

この考案は、かかる点に鑑み、フロート室の燃料流入口
と、アフターファイヤー時のメインジェットの入口を同
時に開閉できて、構造を簡単にできて安価にできる内燃
機関用気化器の燃料遮断装置を得ることを目的とする。
In view of this point, the present invention provides a fuel cutoff device for a carburetor for an internal combustion engine, which can simultaneously open and close the fuel inlet of the float chamber and the inlet of the main jet at the time of afterfire, which can be simplified in structure and inexpensive. The purpose is to

(課題を解決するための手段) 上記目的を達成するために、この考案の内燃機関用気化
器の燃料遮断装置は、フロート室の燃料流入口のニード
ル弁をフロートで開閉するもので、フロート室下部のメ
インジエットの入口通路に、電磁ソレノイドで開くテー
パー弁を設け、該テーパー弁にプッシュロッドを突設
し、テーパー弁で入口通路を閉じたとき同時にプッシュ
ロッドでフロートを突上げてニードル弁を閉じるように
し、電磁ソレノイドをエンジンスイッチに連動させるよ
うにしたことにある。
(Means for Solving the Problems) In order to achieve the above object, a fuel cutoff device for a carburetor for an internal combustion engine according to the present invention opens and closes a needle valve at a fuel inlet of a float chamber with a float chamber. A taper valve that opens with an electromagnetic solenoid is provided in the inlet passage of the lower main jet, and a push rod is provided so as to protrude from the taper valve.When the inlet passage is closed by the taper valve, the push rod also pushes up the float to raise the needle valve. It is closed and the electromagnetic solenoid is linked to the engine switch.

(作用) エンジンスイッチを接続して運転できる状態にすると、
電磁ソレノイドに通電して、押しバネに抗してテーパー
弁を下げ、入口通路を開いてメインジェットにフロート
室の燃料が流れるようにする。一方、プッシュロッドも
下って、フロートを自由にするので、フロートが燃料油
面に浮き、油面が下るとニードル弁を開いて、燃料流入
口からフロート室内に燃料が流入し、一定油面に保つ。
アフターファイヤーが起ったときや運転を停止するとき
に、エンジンスイットを切ると、電磁ソレノイドへの通
電が断たれ、テーパー弁が押しバネで押上げられて入口
通路を閉じ、メインエンジンに燃料が流れないようにす
る。一方、同時にプッシュロッドが押上げられて、フロ
ートを押上げるので、燃料流入口のニードル弁が閉じた
状態に保たれ、フロート室内にも燃料が流入できなくな
る。
(Action) When the engine switch is connected and the vehicle is ready for operation,
Energize the electromagnetic solenoid to lower the taper valve against the push spring and open the inlet passage to allow fuel in the float chamber to flow to the main jet. On the other hand, since the push rod also descends to free the float, the float floats on the fuel oil level, and when the oil level falls, the needle valve is opened, and the fuel flows from the fuel inlet into the float chamber and reaches the constant oil level. keep.
When the engine switch is turned off when after-fire occurs or when operation is stopped, the electromagnetic solenoid is de-energized, the taper valve is pushed up by the push spring and the inlet passage is closed, and fuel is fed to the main engine. Prevent it from flowing. On the other hand, at the same time, the push rod is pushed up and the float is pushed up, so that the needle valve at the fuel inlet is kept closed and fuel cannot flow into the float chamber.

(実施例) 以下、本考案の実施例を図面によって説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.

気化器は、上部に吸気通路1が設けてあり、メインジェ
ット2に通じたノズル3の先端を開口させてあって、吸
気通路1を流れる吸気で、メインジェット2で計量され
た燃料が、ノズル3から吸出され、吸気に燃料が霧化混
入するようになっている。気化器の下部には、フロート
室4が設けてある。フロート室4には、一端を軸着した
フロート5が、燃料油面に浮くように設けてある。そし
て、燃料流入口6を開閉するニードル弁7をフロート5
に乗せてあり、フロート室4内の燃料油面に浮くフロー
ト5でニードル弁7を開閉し、油面が下るとニードル弁
7が開いて燃料が流入し、フロート室4内の燃料油面を
一定に保つ。フロート室4の下部は、入口通路8でメイ
ンジェット2に通じさせてある。入口通路8には、テー
パー弁9を設けてある。テーパー弁9は、押しバネ10に
押上げられて入口通路8を通じるようになっており、電
磁ソレノイド11に通電すると、テーパー弁9が押しバネ
10に抗して下げられて開くようにしてある。テーパー弁
9には、プッシュロッド12を上方に突出させて設けてあ
る。テーパー弁9を閉じるとプッシュロッド12がフロー
ト5を押し上げ、フロート室4内の燃料油面の高さに関
係なく、ニードル弁7を閉じた状態に保って、燃料流入
口6からフロート室4内に燃料が流入できないようにす
る。電磁ソレノイド11は、エンジンスイッチによって操
作する。
The carburetor is provided with an intake passage 1 in the upper part, and the tip of a nozzle 3 communicating with the main jet 2 is opened, so that the fuel that is measured by the main jet 2 from the nozzle 3 is the intake air flowing through the intake passage 1. It is sucked out, and fuel is atomized and mixed into the intake air. A float chamber 4 is provided below the vaporizer. In the float chamber 4, a float 5 having one end axially attached is provided so as to float on the fuel oil surface. Then, the needle valve 7 for opening and closing the fuel inlet 6 is connected to the float 5
The needle valve 7 is opened / closed by the float 5 floating on the fuel oil level in the float chamber 4, and when the oil level drops, the needle valve 7 opens and the fuel flows in, so that the fuel oil level in the float chamber 4 changes. Keep constant. The lower portion of the float chamber 4 communicates with the main jet 2 through an inlet passage 8. A taper valve 9 is provided in the inlet passage 8. The taper valve 9 is pushed up by a push spring 10 to pass through the inlet passage 8. When the electromagnetic solenoid 11 is energized, the taper valve 9 is pushed by the push spring 10.
It is lowered against 10 and opened. A push rod 12 is provided on the taper valve 9 so as to project upward. When the taper valve 9 is closed, the push rod 12 pushes up the float 5 and keeps the needle valve 7 closed regardless of the height of the fuel oil level in the float chamber 4, so that the inside of the float chamber 4 is opened from the fuel inlet 6. Prevent fuel from flowing into. The electromagnetic solenoid 11 is operated by an engine switch.

(考案の効果) 以上説明したように、この考案は、上述のように構成し
たので、エンジンスイッチに連動する電磁ソレノイドに
よって、メインジェットの入口通路を開閉するテーパー
弁と、フロート室の燃料流入口のニードル弁が同時に開
閉できる。これによって、フロート室入口に設けるコッ
クとアフターファイヤー時の燃料遮断が一つの電磁ソレ
ノイドで操作でき、構造が簡単になって、安価に製作で
きる。又、小型にすることもできる。
(Effects of the Invention) As described above, since the present invention is configured as described above, the electromagnetic solenoid linked to the engine switch opens and closes the inlet passage of the main jet, and the fuel inlet of the float chamber. Needle valves can be opened and closed at the same time. Thus, the cock provided at the inlet of the float chamber and the fuel cutoff at the time of afterfire can be operated by one electromagnetic solenoid, the structure is simplified, and the manufacturing can be performed at low cost. It can also be made compact.

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

図は本考案の一実施例を示す縦断面図である。 2……メインジェット、4……フロート室、5……フロ
ート、6……燃料流入口、7……ニードル弁、8……入
口通路、9……テーパー弁、11……電磁ソレノイド、12
……プッシュロッド。
FIG. 1 is a vertical sectional view showing an embodiment of the present invention. 2 ... main jet, 4 ... float chamber, 5 ... float, 6 ... fuel inlet, 7 ... needle valve, 8 ... inlet passage, 9 ... taper valve, 11 ... electromagnetic solenoid, 12
...... Push rod.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】フロート室の燃料流入口のニードル弁をフ
ロートで開閉するもので、フロート室下部のメインジエ
ットの入口通路に、電磁ソレノイドで開くテーパー弁を
設け、該テーパー弁にプッシュロッドを突設し、テーパ
ー弁で入口通路を閉じたとき同時にプッシュロッドでフ
ロートを突上げてニードル弁を閉じるようにし、電磁ソ
レノイドをエンジンスイッチに連動させるようにしたこ
とを特徴とする内燃機関用気化器の燃料遮断装置。
1. A needle valve at a fuel inlet of a float chamber is opened and closed by a float. A taper valve opened by an electromagnetic solenoid is provided in an inlet passage of a main jet at a lower part of the float chamber, and a push rod is projected to the taper valve. The carburetor for internal combustion engine is characterized in that when the inlet passage is closed by the taper valve, the float is pushed up by the push rod at the same time to close the needle valve, and the electromagnetic solenoid is interlocked with the engine switch. Fuel cutoff device.
JP14863389U 1989-12-26 1989-12-26 Fuel cutoff device for carburetor for internal combustion engine Expired - Lifetime JPH0746764Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14863389U JPH0746764Y2 (en) 1989-12-26 1989-12-26 Fuel cutoff device for carburetor for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14863389U JPH0746764Y2 (en) 1989-12-26 1989-12-26 Fuel cutoff device for carburetor for internal combustion engine

Publications (2)

Publication Number Publication Date
JPH0387957U JPH0387957U (en) 1991-09-09
JPH0746764Y2 true JPH0746764Y2 (en) 1995-10-25

Family

ID=31695077

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14863389U Expired - Lifetime JPH0746764Y2 (en) 1989-12-26 1989-12-26 Fuel cutoff device for carburetor for internal combustion engine

Country Status (1)

Country Link
JP (1) JPH0746764Y2 (en)

Also Published As

Publication number Publication date
JPH0387957U (en) 1991-09-09

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