JPS59105946A - Choke mechanism for carburetor - Google Patents
Choke mechanism for carburetorInfo
- Publication number
- JPS59105946A JPS59105946A JP21466982A JP21466982A JPS59105946A JP S59105946 A JPS59105946 A JP S59105946A JP 21466982 A JP21466982 A JP 21466982A JP 21466982 A JP21466982 A JP 21466982A JP S59105946 A JPS59105946 A JP S59105946A
- Authority
- JP
- Japan
- Prior art keywords
- choke
- lever
- force
- shaft
- action
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
- F02M1/08—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically
- F02M1/10—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically dependent on engine temperature, e.g. having thermostat
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Means For Warming Up And Starting Carburetors (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は内燃機関用の気化器のチョーク機構に係り、特
に低温時における作動を円滑にするように改良したチョ
ーク機構に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a choke mechanism for a carburetor for an internal combustion engine, and particularly to a choke mechanism that is improved so as to operate smoothly at low temperatures.
第1図は2段完爆ピストン手段を備えたチョーク機構を
有する気化器の垂直断面図で、1は気化器給気胴、2は
チョークバルブ、3は上記のチョークパルプを固着しか
つ回動自在に支承されたチョーク軸である。上記チョー
ク軸3にはチョークレバー4がJ収伺けられていて、こ
のチョークレバー4を介してチョークバルブ2の開閉作
動が行なわれる。Fig. 1 is a vertical sectional view of a carburetor having a choke mechanism equipped with a two-stage complete explosion piston means, in which 1 is a carburetor supply air cylinder, 2 is a choke valve, and 3 is a structure in which the above-mentioned choke pulp is fixed and rotated. It is a freely supported choke shaft. A choke lever 4 is mounted on the choke shaft 3, and the choke valve 2 is opened and closed via the choke lever 4.
この型式のチョーク機構は、低温時にチョークバルブ閉
となり高温時にチョークパルプ開となる感温作動機構、
並びに、吸気管の負圧に応じて自動開閉する感圧作動機
構を備えていて、気温の低い時に自動的にチョークパル
プを開閉制御して容易に完爆ぜしめ得る機能を有してい
る。This type of choke mechanism has a temperature-sensitive operating mechanism that closes the choke valve when the temperature is low and opens the choke valve when the temperature is high.
In addition, it is equipped with a pressure-sensitive operating mechanism that automatically opens and closes in response to the negative pressure in the intake pipe, and has the function of automatically controlling the opening and closing of the choke pulp when the temperature is low to easily achieve complete explosion.
図に示すA部は上記の感温作動機構、B部は上11已の
感圧11三動機4M9である。Section A shown in the figure is the above-mentioned temperature-sensitive operating mechanism, and section B is the pressure-sensitive 11-tri-motor 4M9 located on the upper 11 sides.
1)II記のチョークいバー4には、感圧作動機構Aか
らの力を受けるためのアーム4bと、感圧作動機構Bか
らの力を受けるためのアーム4aとが11・1ζ的に形
成されている。1) In the choke bar 4 described in II, an arm 4b for receiving force from the pressure-sensitive actuation mechanism A and an arm 4a for receiving force from the pressure-sensitive actuation mechanism B are formed in an 11.1ζ shape. has been done.
上記のアーム4bは、バイメタルなどの感温部材13に
係着されていて、低温の時に矢印Cのごとくチョークパ
ルプ閉弁方向のカを受ける。The above-mentioned arm 4b is attached to a temperature-sensitive member 13 such as a bimetal, and receives a force in the choke pulp valve closing direction as shown by arrow C when the temperature is low.
完爆レバー5は、連結棒12.連結L!!III 1
o 、 第2ピストンバネ11.バネ筒状の第2ピスト
ン9を介してダイヤフラム8に連結されていて、吸気管
内負圧14により矢印り方向のカを受け、伝動用のアー
ム5aを介して前記のアーム4aを押動し、チョークパ
ルプ2に矢印Eのごとく開弁方向の力を与える。6は冗
爆ピストン、7は吸気負圧14と釣合うためのバネであ
る。The complete explosion lever 5 is connected to the connecting rod 12. Connect L! ! III 1
o, second piston spring 11. It is connected to the diaphragm 8 via a spring cylindrical second piston 9, receives a force in the direction of the arrow by the negative pressure 14 in the intake pipe, and pushes the arm 4a via the transmission arm 5a, A force is applied to the choke pulp 2 in the direction of valve opening as shown by arrow E. 6 is a redundant piston, and 7 is a spring for balancing the intake negative pressure 14.
前記の完爆レバー5は、チョーク軸3にょシ回動自在に
枢支されると共に、伝動用アーム5aと被動用アーム5
bとを一体形成されている。そして上記の被動用アーム
5bは連結棒12に軸着され、伝動用アーム5aはチョ
ークレバー4のアーム4aに対向している。The complete explosion lever 5 is rotatably supported on the choke shaft 3, and is connected to a transmission arm 5a and a driven arm 5.
b are integrally formed. The driven arm 5b is pivoted to the connecting rod 12, and the transmission arm 5a faces the arm 4a of the choke lever 4.
上記のような完爆ピストン手段を備えたチョーク機構の
作動を第2図について次に述べる。The operation of the choke mechanism provided with the complete explosion piston means as described above will now be described with reference to FIG.
縦軸はチョークパルプの開度を示す。θ1は低温時に機
関を始動せしめ、かつ暖機運転を開始するに適したチョ
ークパルプ開度である。θ3は暖機運転を完了してチョ
ークパルプが全開されたときの開度である。The vertical axis indicates the degree of opening of the chalk pulp. θ1 is a choke pulp opening degree suitable for starting the engine at low temperatures and starting warm-up operation. θ3 is the opening degree when the choke pulp is fully opened after the warm-up operation is completed.
いま、感圧作動機構Bが作用しない状態において、始動
時は感温作動機構Aの作用上チョークバルブ開度がθI
Kなっているので容易に始動でき、暖機運転に移行し得
る。そして暖機の進行に伴ってチョークパルプが次第に
03まで開いて負荷運転が可能な状態となる。Now, in a state where pressure-sensitive actuation mechanism B does not act, at the time of starting, the choke valve opening degree is θI due to the action of temperature-sensitive actuation mechanism A.
Since the engine is at K, it can be started easily and the engine can be warmed up. As the warm-up progresses, the choke pulp gradually opens to 03, allowing load operation.
しかし、暖機未完了のうちに吸気管負圧が大きくなって
感圧作動機構Aが作動する場合もある。However, there are cases where the intake pipe negative pressure becomes large and the pressure-sensitive actuation mechanism A is activated while the warm-up is not completed.
例えば暖機を促進するためにアクセルペダルを踏みこん
で吸気管内の負圧が大きくなった場合にどである。For example, this may occur if the accelerator pedal is depressed to promote warm-up and the negative pressure in the intake pipe increases.
第2図において実線のカーブa −t) −Cは正常な
始動・暖機運転の1例を示す。In FIG. 2, the solid curve a-t)-C shows an example of normal startup and warm-up operation.
T1は始動時における感儒部材算囲気に冨度である。こ
のT1温度からT3温度まではチョークパルプ回層がθ
1に保たれる。T1 is the richness of the sensitive material at the time of starting. From this T1 temperature to T3 temperature, the choke pulp circuit layer is θ
It is kept at 1.
θ2は、1蟲王作動機構Bの作動力によシ、渦巻ハネ状
の感r品部材13が擢まされてチョークパルプ2が開か
れたときのパルプ開1wである。θ2 is the pulp opening 1w when the spiral spring-shaped sensitive material member 13 is pushed open by the operating force of the one-magnet operating mechanism B and the chalk pulp 2 is opened.
a点(+a度T I )で始動し、b点(温度T3 )
までアクセルを踏みこまずに暖機すると、その後温度T
1から′■゛4までの間で感温部材13が冷状態から熱
状態に変化し、感温作動機構Aの作動力が減少してチョ
ークパルプがθ2まて開いて0点になる。その後、正常
作動温度T5においてチョークパルプは全開θ3となっ
て定格運転状態dになる。Starts at point a (+a degree T I ) and starts at point b (temperature T3)
If you warm up without depressing the accelerator until the temperature reaches T
Between 1 and 4, the temperature sensing member 13 changes from a cold state to a hot state, the operating force of the temperature sensing actuation mechanism A decreases, and the choke pulp opens by θ2 to reach the 0 point. Thereafter, at the normal operating temperature T5, the choke pulp becomes fully open θ3 and becomes the rated operating state d.
しかし、a点で始動後、禍度T3までの緩徐な暖機を待
たずに、温度T2の点eでアクセルを踏みこむと、感圧
作動機構Bが作用して破線で示したようにチョークパル
プ開度θ2の点fを経て前述の場合よシも速やかに点C
に至る。However, after starting at point a, if you step on the accelerator at point e at temperature T2 without waiting for the slow warm-up to the severity level T3, the pressure-sensitive actuation mechanism B acts and chokes as shown by the broken line. As in the above case, the pulp opening degree θ2 immediately passes through point f and reaches point C.
leading to.
しかし、上記の点C(温度T4 )にならないうちに
、例えば点g付近でアクセルを放した場合は、仮想線の
矢印で示したようにチョークパルプ開度θ1まで閉じ方
向に戻シ、前述の実線カーブに一致してその時の昌1.
rtに適した運転状態にならねばならない。However, if the accelerator is released, for example near point g, before the above point C (temperature T4) is reached, the choke pulp opening degree θ1 will be returned to the closing direction as shown by the virtual line arrow, and the above-mentioned Matching the solid line curve, the change at that time is 1.
The operating condition must be suitable for rt.
ところが、上記の仮想線矢印のごとくチョークパルプが
閉弁作動をすべき場合に、チョーク機構の構成部材のい
ずれかが引つ懸って閉弁作動を妨げると、アクセルペダ
ルを放した後もチョークパルプがθ2に開き放しの状態
になシ、暖機が完了していないためガソリンの吸入霧化
が不調となってエンストを招く。こうした不具合は、第
2図に示した斜線部分において発生の可能性がある。However, when the choke pulp is supposed to close the valve as shown by the imaginary arrow above, if any of the components of the choke mechanism is pulled and prevents the valve from closing, the choke continues even after the accelerator pedal is released. Since the pulp is left open at θ2 and warm-up is not completed, the intake atomization of gasoline becomes unsatisfactory, leading to engine stall. Such a problem may occur in the shaded area shown in FIG.
従来のチョーク機構においては、暖機運転途中でアクセ
ルを踏みこんで放した場合などに、上に述べたチョーク
パルプの引つ懸りによるエンストを発生することが少な
くない。In conventional choke mechanisms, when the accelerator is depressed and released during warm-up, the engine often stalls due to the above-mentioned tension of the choke pulp.
上述のチョークパルプの閉弁作動の引っ懸りを生しる原
因を第3図及び第4図について次に述べる。The cause of the above-mentioned sluggish valve closing operation of the choke pulp will be described below with reference to FIGS. 3 and 4.
第3図は第1図に示したチョーク軸3付近を該τ抽を含
む面で断面したところを描いである。第4図は第1図に
示した完爆レバー5およびその関連部材を抽出して描い
た一部断面図である。FIG. 3 is a cross-sectional view of the vicinity of the choke shaft 3 shown in FIG. 1 taken along a plane including the τ extraction. FIG. 4 is a partial sectional view of the complete explosion lever 5 shown in FIG. 1 and its related members.
第3図に示すごとく、チョークレバー4はチョーク軸3
に固着されている。このチョークレバー4には2個のア
ーム4a、4bが一体成形されている。上記のアーム4
bは感温部材13を係着され、アーム4aは完爆レバー
5の伝動用アーム5aに対向している。As shown in FIG. 3, the choke lever 4 is connected to the choke shaft 3.
is fixed to. This choke lever 4 has two arms 4a and 4b integrally molded therein. Arm 4 above
The temperature sensing member 13 is attached to the arm 4a, and the arm 4a faces the transmission arm 5a of the complete explosion lever 5.
上記の完爆レバー5は軸受部5cを介してチョーク軸3
により回動自在に支承されているっこの完爆レバー5は
チョーク軸3と垂直な平面内で回動するが、との完爆レ
バー5に対して上記の回動面外の力が作用すると、同図
に示すように完爆レバー5の軸受部5Cをチョーク軸3
に対して傾ける力が動き、図示のとと(r、sの2箇所
で局部的に強く当たって自在な回動を妨げる。The above-mentioned complete explosion lever 5 is connected to the choke shaft 3 via the bearing portion 5c.
This complete explosion lever 5, which is rotatably supported by , rotates in a plane perpendicular to the choke shaft 3, but if the above-mentioned force outside the rotation plane acts on the complete explosion lever 5, , as shown in the figure, the bearing part 5C of the complete explosion lever 5 is connected to the choke shaft 3.
The tilting force moves against the object, and strongly hits locally at the two points (r and s) shown in the figure, preventing free rotation.
上述のように軸受部5cをチョーク軸3に対して頌ける
力を発生する理由は、完爆レバー5の本体部に対して伝
動用アーム5aを曲げであるため、該アーム5aとチョ
ーク軸4のアーム4aとの当接点Fが完爆レバー5の回
動面外に位置することによる。As mentioned above, the reason why the force that makes the bearing part 5c move against the choke shaft 3 is generated is because the transmission arm 5a is bent with respect to the main body of the complete explosion lever 5. This is because the contact point F with the arm 4a is located outside the rotation plane of the complete explosion lever 5.
その上、第4図に示すように完爆レバー5に対して天秤
形に力が掛かるため完爆レバー5とチョーク軸3との間
に大きい当接力が働く。即ち、本図の矢印PRは完爆レ
バー5の被動用アーム5bが連結棒12から受けるカ、
矢印Ptは完爆レバー5の伝動用アーム5aがチョーク
レバー4のアーム4a(アーム部のみ図示す)から受け
る反力である。回転方向の力の釣合に関しては矢印Ps
O力による右回シモーメントと矢印PTのカにょる左回
シモーメントとがチョーク軸3を支点として釣合の関係
にある。そして平行移動方向のカの釣合について見ると
、チョーク軸3が支点とじて支承する力はP s 十P
丁となシ、非常に大きい力である。このため、支点付近
の摩擦力が大きくなって自在な回動が妨げられる。Moreover, as shown in FIG. 4, a force is applied to the complete explosion lever 5 in the form of a balance, so that a large contact force is exerted between the complete explosion lever 5 and the choke shaft 3. That is, the arrow PR in this figure indicates the force that the driven arm 5b of the complete explosion lever 5 receives from the connecting rod 12;
Arrow Pt is a reaction force that the transmission arm 5a of the complete explosion lever 5 receives from the arm 4a of the choke lever 4 (only the arm portion is shown). Regarding the balance of forces in the rotation direction, arrow Ps
The clockwise moment caused by the O force and the counterclockwise moment caused by the arrow PT are in a balanced relationship with the choke shaft 3 as the fulcrum. Looking at the balance of forces in the parallel movement direction, the force supported by the choke shaft 3 as a fulcrum is P s 1 P
Ding and Nasi are extremely powerful. For this reason, the frictional force near the fulcrum increases and free rotation is hindered.
本発明は上述の7;11悄に鑑みて為され、チョークパ
ルプの回動を妨げる力を格段に減少せしめ、該チョーク
パルプが引つ懸りを生じないで円滑に作動するチョーク
機構を提供することを目的とする。The present invention has been made in view of the above-mentioned problems 7 and 11, and an object of the present invention is to provide a choke mechanism that significantly reduces the force that hinders the rotation of the choke pulp and that operates smoothly without causing any tension on the choke pulp. With the goal.
〔発明の概要〕
上記の目的を達成するため、本発明は内燃機関の気化器
のチョーク機構において、チョーク軸により回動自在に
支承されたチョークレバーに対して感温部材から伝達さ
れる開閉作動力の作用線と、ダイヤフラムを介して吸気
管負圧によって加えられる開閉作動力の作用線とを、チ
ョーク軸に関して同じ側に配設したことを特徴とする。[Summary of the Invention] In order to achieve the above object, the present invention provides a choke mechanism for a carburetor of an internal combustion engine, in which an opening/closing operation is transmitted from a temperature-sensitive member to a choke lever rotatably supported by a choke shaft. It is characterized in that the line of action of the power and the line of action of the opening/closing force applied by the negative pressure in the intake pipe via the diaphragm are arranged on the same side with respect to the choke shaft.
次に、本発明の一実施例を第5図及び第6図について説
明する。第5図は従来装置における第4図に対応する図
であって、従来装置と同一の図面参照番号を附したチョ
ーク軸3.連結棒12.および感温部材13は従来装置
におけると同様の構成部材である。Next, an embodiment of the present invention will be described with reference to FIGS. 5 and 6. FIG. 5 is a diagram corresponding to FIG. 4 of the conventional device, and the choke shaft 3. Connecting rod 12. The temperature sensing member 13 is the same component as in the conventional device.
4′は本実施例におけるチョークレ、< −15/は本
実施例における完爆レバーである。第6図は上記チョー
クレバー4′および完爆し・(−5′をチョークJll
l13の軸心を含む面で切断した断面図である。4' is a choke lever in this embodiment, and <-15/ is a complete explosion lever in this embodiment. Figure 6 shows the choke lever 4' and the choke lever (-5')
FIG. 3 is a cross-sectional view taken along a plane including the axis of l13.
本実施例′7゛′尼爆レバー5′は、連結杆12を接続
する被動用アーム5b′を一体形成し1.この被動用ア
ーム5b’を伝動用ア−j・にも兼用する。The '7' explosive lever 5' of this embodiment has a driven arm 5b' that connects the connecting rod 12 integrally formed with the following features:1. This driven arm 5b' is also used as a transmission arm.
即ち、チョークレバー4′から被動用アーム4Cを突出
させて上記の被動・伝動兼用アームs b /に対向す
しめる。That is, the driven arm 4C is made to protrude from the choke lever 4' and is opposed to the above-mentioned driven/transmission arm s b /.
これにより、第5図に示すごとく、完爆アーム5′が連
結棒12から受ける力Pgの作用線と、チョークレバー
4′から受ける反力PTの作用線とは、支点であるチョ
ーク軸3に関して同じ側に位置する。本実施例は以上の
ようにして、チョークレバー4′に対して感温部材から
伝達される力の作用線矢印1” Tと、ダイヤフラムを
介して吸気管負圧によって加えられる力の作用線矢印P
8とをチョーク1lQtl 3に関して同じ側に配設し
である。As a result, as shown in FIG. 5, the line of action of the force Pg that the complete explosion arm 5' receives from the connecting rod 12 and the line of action of the reaction force PT that the explosion arm 5' receives from the choke lever 4' are different with respect to the choke shaft 3, which is the fulcrum. located on the same side. In this embodiment, as described above, the line of action of the force transmitted from the temperature sensing member to the choke lever 4' (arrow 1"T) and the line of action of the force applied by the negative pressure in the intake pipe via the diaphragm (arrow) P
8 and are arranged on the same side with respect to the choke 1lQtl3.
以上のように(14成しであるので、本例における平行
移動力向の力の釣合についてチョーク軸3は双方の作動
力PsとPTとの差に相当する力を支承する。従って、
チョーク軸3と完爆レバー5′との接触面に働く圧力は
従来装置(第4図)の場合に比して格段に小さい。この
ため自在な回動を妨げる帝擦力は非常に小さくなり、チ
ョークバルブ2を支承するチョーク軸3、およびその関
連部材の作動が著しく円滑に在る。As described above, the choke shaft 3 supports a force corresponding to the difference between the two operating forces Ps and PT in terms of force balance in the parallel force direction in this example.
The pressure acting on the contact surface between the choke shaft 3 and the complete explosion lever 5' is much smaller than that in the conventional device (FIG. 4). Therefore, the force that prevents free rotation is extremely small, and the choke shaft 3 that supports the choke valve 2 and its related members operate extremely smoothly.
その上、本シシ施例においては第6図に示すようにチョ
ークレバー4′と完爆レバー5′との当接点F′は完ル
バー5′の回動面」二に位置しているので、完爆レバー
5′に対してその姿勢を偏らせる方向の力が働かない。Moreover, in this embodiment, as shown in FIG. 6, the contact point F' between the choke lever 4' and the complete explosion lever 5' is located at the rotational surface of the complete explosion lever 5'. No force acts on the complete explosion lever 5' to bias its attitude.
このため、完爆レバー5′の軸受部5Cがチョーク軸3
に対して同心を保ち、引つ怒りを生じる虞れが無い。本
例のようにチョークレバー4′に対し7て吸気管負圧に
ヨル作動力を伝達するレバ一部材(本例における完・曝
レバー5′)とチョークレバー4′との当接点F′を、
上記完爆レバー5′の回動向上に設定すると同完爆ンバ
ー5′の回動が円滑になるという効果がある。Therefore, the bearing part 5C of the complete explosion lever 5' is connected to the choke shaft 3.
There is no risk of anger arising from anger. As in this example, the contact point F' between the choke lever 4' and the lever member (complete exposure lever 5' in this example) that transmits the rotational operating force to the intake pipe negative pressure with respect to the choke lever 4' is ,
When the rotation of the complete explosion lever 5' is set to be improved, the rotation of the complete explosion lever 5' becomes smoother.
また、本例のごとく、双方の作動力PsとPTとの作用
線を、チョーク軸3に垂直な面内に配設すると、チョー
クレバー4′および完爆レバー5′をチョーク軸3に対
して傾ける方向の力が作用せず(詳しくはチョーク軸3
に対する垂直姿勢を偏らせる力が作用せず)チョーク機
構の作動が円滑に行なわれる。更に双方の作動力の作用
線Ps。Furthermore, as in this example, if the lines of action of both operating forces Ps and PT are arranged in a plane perpendicular to the choke shaft 3, the choke lever 4' and the complete explosion lever 5' can be moved relative to the choke shaft 3. No force in the tilting direction is applied (For details, refer to choke shaft 3.
The choke mechanism operates smoothly without any force acting to bias its vertical position. Furthermore, the line of action Ps of both operating forces.
Ptが互いに接近しているほど、チョーク軸3に掛かる
力が小さくなシ、作動が円滑になるという効果がある。The closer the Pts are to each other, the smaller the force applied to the choke shaft 3 and the smoother the operation.
以上詳述したように、本発明は、内燃機関の気化器のチ
ョーク機構において、チョーク軸に上り回動自在に支承
されたチョークレバーに対して感温部材から伝達される
開閉作動力の作用線と、ダイヤフラムを介して吸気管負
圧によって加えられる開閉作動力の作用線とを、チョー
ク軸に関して同じ側に配設することにより、チョークノ
(ルプの回IIjII′ff:妨げる力を格段に減少せ
しめて該チョークバルブが引つ懸りを生じないで円滑に
作動する気化器のチョーク機構を構成することができる
。As described above in detail, the present invention provides a choke mechanism for a carburetor of an internal combustion engine, in which the line of action of an opening/closing operating force transmitted from a temperature-sensitive member to a choke lever rotatably supported on a choke shaft is provided. By arranging the line of action of the opening/closing force applied by the negative pressure in the intake pipe via the diaphragm on the same side with respect to the choke shaft, the force that obstructs the choke can be significantly reduced. Accordingly, it is possible to construct a choke mechanism for a carburetor that operates smoothly without causing the choke valve to be pulled.
第1図は完爆ピストン手段を備えたチョーク機構を有す
る従来の気化器の垂直断面図、第2図は上記のチョーク
機構の作動を表わした図表、第3図は上記のチョーク作
動機構の断面図、第4図は上記のチョーク機構の完爆し
・く−および雪の関連部材を抽出して描いた一部断面図
である。第5図及び第6図は本発明の気化器のチョーク
機構の一実施例を示し、第5図は従来装置における第4
図に対応する一部断面図、第6図は従来装置における第
3図に対応する断面図である。
3・・・チョーク軸、4.4′・・・チョークレノく−
、4a、411・・・アーム、4C・・・被動用アーム
、5゜5′・・・完爆レバー、5a・・・伝動用アーム
、5b・・・被動用アーム、s b /・・・伝動兼被
動用アーノ1.5C・・・軸受部、8・・・ダイヤフラ
ム、9・・・第2ピストン
12・・・連結棒、13・・・感温部材、A・・・感温
作動様溝、B・・・感圧作動機構。
代理人 弁理士 秋本正実
第3図
病5図
4′
第tJ−図
第6図Fig. 1 is a vertical sectional view of a conventional carburetor having a choke mechanism equipped with a complete detonation piston means, Fig. 2 is a diagram showing the operation of the above choke mechanism, and Fig. 3 is a cross section of the above choke operating mechanism. FIG. 4 is a partial cross-sectional view of the choke mechanism and snow-related components of the choke mechanism. 5 and 6 show an embodiment of the choke mechanism of the carburetor of the present invention, and FIG.
FIG. 6 is a sectional view corresponding to FIG. 3 of the conventional device. 3...Choke shaft, 4.4'...Choke renoku-
, 4a, 411... Arm, 4C... Driven arm, 5゜5'... Complete explosion lever, 5a... Transmission arm, 5b... Driven arm, s b /... Transmission and driven Arno 1.5C...Bearing part, 8...Diaphragm, 9...Second piston 12...Connecting rod, 13...Temperature sensing member, A...Temperature sensing operation Groove, B...pressure-sensitive actuation mechanism. Agent Patent Attorney Masami Akimoto Figure 3 Illness Figure 5 Figure 4' Figure tJ-Figure 6
Claims (1)
ク軸により回動自在に支承された升ヨークレバーに対し
て感?晶部材から伝達される開閉作動力の作用線と、ダ
イヤフラムを介して吸気管負圧によって加えられる開閉
作動力の作用線とを、チョーク軸に関して同じ側に配設
したことを特徴とする気化器のチョーク機構。 2、前記双方の開閉作動力の作用線をそれぞれチョーク
軸と垂直な面内に配設し、かつ双方の力の作用線を互い
に近接せしめて配設したことを特徴とする特許請求の範
囲第1項記載の気化器チョーク機構。 3、前記のチョークレバーに対して吸気管負圧による作
動力を伝達するVバ一部材と、上記チョークレバーとの
当接点を、該作動力伝達用のレバ一部拐の回動面上に設
定したことを特徴とする特許請求の範囲第1項又は同第
2項に記載の気化器のチョーク機構。[Claims] 1. In the choke mechanism of the carburetor of an internal combustion engine, what is the sensitivity to the square yoke lever rotatably supported by the choke shaft? A carburetor characterized in that the line of action of the opening/closing force transmitted from the crystal member and the line of action of the opening/closing force applied by negative pressure in the intake pipe via the diaphragm are arranged on the same side with respect to the choke shaft. choke mechanism. 2. The lines of action of both of the opening/closing forces are arranged in a plane perpendicular to the choke axis, and the lines of action of both forces are arranged close to each other. The carburetor choke mechanism according to item 1. 3. Place the point of contact between the choke lever and the V-bar member that transmits the operating force due to the negative pressure in the intake pipe to the choke lever on the rotating surface of a portion of the lever for transmitting the operating force. A choke mechanism for a carburetor according to claim 1 or 2, characterized in that:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21466982A JPS59105946A (en) | 1982-12-09 | 1982-12-09 | Choke mechanism for carburetor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21466982A JPS59105946A (en) | 1982-12-09 | 1982-12-09 | Choke mechanism for carburetor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59105946A true JPS59105946A (en) | 1984-06-19 |
Family
ID=16659603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21466982A Pending JPS59105946A (en) | 1982-12-09 | 1982-12-09 | Choke mechanism for carburetor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59105946A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0269048U (en) * | 1988-11-15 | 1990-05-25 |
-
1982
- 1982-12-09 JP JP21466982A patent/JPS59105946A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0269048U (en) * | 1988-11-15 | 1990-05-25 |
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