JPS6143539B2 - - Google Patents

Info

Publication number
JPS6143539B2
JPS6143539B2 JP56127329A JP12732981A JPS6143539B2 JP S6143539 B2 JPS6143539 B2 JP S6143539B2 JP 56127329 A JP56127329 A JP 56127329A JP 12732981 A JP12732981 A JP 12732981A JP S6143539 B2 JPS6143539 B2 JP S6143539B2
Authority
JP
Japan
Prior art keywords
shaft
limiter
throttle valve
rotation
valve
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
Application number
JP56127329A
Other languages
Japanese (ja)
Other versions
JPS5765840A (en
Inventor
Toshimasa Shishido
Minoru Atsumi
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.)
Honda Motor Co Ltd
Original Assignee
Honda 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of JPS5765840A publication Critical patent/JPS5765840A/en
Publication of JPS6143539B2 publication Critical patent/JPS6143539B2/ja
Granted legal-status Critical Current

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
    • F02M13/00—Arrangements of two or more separate carburettors; Carburettors using more than one fuel
    • F02M13/02—Separate carburettors
    • F02M13/04—Separate carburettors structurally united
    • F02M13/046—Separate carburettors structurally united arranged in parallel, e.g. initial and main carburettor
    • 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
    • F02M1/02—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling being chokes for enriching fuel-air mixture
    • 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)
  • Architecture (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Details Of Garments (AREA)

Description

【発明の詳細な説明】 先づアブストラクトを述べれば、気化器組立体
はエンジンの主燃焼室に稀薄混合気を供給すべく
一次通路を有し、更に該エンジンの副燃焼室に濃
厚混合気を供給すべく副通路を有する。各通路内
の絞り弁は軸を備え、連結子は対応運動のために
該２個の軸を連結する。一次通路内のチヨーク弁
は一次絞り弁に連結され、従つて一次絞り弁及び
副絞り弁の位置決めはチヨーク弁が作動に存する
とき影響される。チヨーク弁の開放運動をエンジ
ンの始動時の周囲の温度に依存して異る程度に制
限すべき構造が備えられる。DETAILED DESCRIPTION OF THE INVENTION First, to give an abstract, the carburetor assembly has a primary passage for supplying a lean mixture to the main combustion chamber of the engine, and further supplies a rich mixture to the sub-combustion chamber of the engine. It has an auxiliary passage for feeding. The throttle valve in each passage includes a shaft, and a connector connects the two shafts for corresponding movement. The throttle valve in the primary passage is connected to the primary throttle valve, so the positioning of the primary throttle valve and the secondary throttle valve are affected when the throttle valve is in operation. A structure is provided to limit the opening movement of the choke valve to a different extent depending on the ambient temperature at the time of starting the engine.

次で本発明の詳細を説明するに、本発明は各シ
リンダが主燃焼室と副燃焼室とを備備えると共に
これらの室がトーチノズルにより連結される内燃
ピストンエンジンに関する。この型式のエンジン
は1973年４月23日提出の米国特許出願第353786号
「内燃エンジンの排気ガス中のNOx・HC及びCO
の減少」に開示されている。更に詳細には、本発
明は主燃焼室に稀薄混合気を供給するための一次
通路と、副燃焼室に濃厚混合気を供給するための
副通路とを有する気化器組立体のためのチヨーク
に関する。稀薄混合気と濃厚混合気との空燃比は
エンジンの始動条件を含めて総ての作動条件に適
合するように保たれる事が重要である。これはエ
ンジンの排気ガス中の好ましくない汚染物の生成
をさけるために必要である。 More specifically, the invention relates to an internal combustion piston engine in which each cylinder has a main combustion chamber and a auxiliary combustion chamber, the chambers being connected by a torch nozzle. This type of engine is described in U.S. Patent Application No. 353,786 filed on April 23, 1973, titled ``NOx, HC, and CO in Exhaust Gases of Internal Combustion Engines''.
Disclosed in ``Decrease of ``. More particularly, the present invention relates to a choke for a carburetor assembly having a primary passage for supplying a lean mixture to the main combustion chamber and a secondary passage for supplying a rich mixture to the auxiliary combustion chamber. . It is important that the air-fuel ratio between the lean and rich mixtures be maintained to suit all operating conditions, including engine starting conditions. This is necessary to avoid the formation of undesirable pollutants in the engine exhaust gas.

チヨーク弁がエンジン始動作動中に使用される
とき、空燃混合気の濃度の増大が一次通路内に生
じそして流速の変化が一次及び副通路の両方に生
じ、流速はチヨーク弁を含まない副通路において
実質的に増大する。濃度及び流速の所要の変化の
度合は周囲の温度に依存する。周囲温度が低けれ
ば低いほど濃度及び流速の変化の度合は大きい。 When the choke valve is used during an engine starting operation, an increase in the concentration of the air/fuel mixture occurs in the primary passage and a change in flow rate occurs in both the primary and secondary passages, with the flow rate increasing in the secondary passage without the choke valve. increases substantially in The degree of change in concentration and flow rate required depends on the ambient temperature. The lower the ambient temperature, the greater the change in concentration and flow rate.

本発明によれば、チヨーク弁の開度の程度を周
囲温度に従つて制限する構造が備えられる。かく
て、周囲温度が通常のとき、装置はチヨーク弁の
開放を全開と全閉との間の中間位置に許容する。
然し乍ら周囲温度が冷いとき、例えば60度Ｆ以下
のとき、装置はチヨーク弁の最大開放を更に制限
し、それは単に小範囲に開く。 According to the present invention, a structure is provided that limits the degree of opening of the cheese valve according to the ambient temperature. Thus, when ambient temperatures are normal, the system allows the opening of the choke valve to an intermediate position between fully open and fully closed.
However, when the ambient temperature is cold, such as below 60 degrees F., the system further limits the maximum opening of the choke valve, which only opens to a small extent.

チヨーク弁機構は手動でも自動的にも作動され
得る。 The choke valve mechanism can be operated manually or automatically.

本発明の他の重要な特性はチヨーク弁機構によ
り副絞り弁の開度を制御させることである。エン
ジン始動作動の間エンジンに与えられる空気の多
量が副通路内にチヨーク弁が存しない事の故に副
通路を介して通過する。その結果、チヨーク弁機
構の作動に応じて副絞り弁の開放の程度を制御す
る事が重要であり、この制御は始動条件中エンジ
ンの排気ガス中に不要の汚染物の生成をさけるべ
く合理的に精密且正確であらねばならない。他の
そしてより詳細な目的及び利点は以下に明かであ
ろう。 Another important characteristic of the present invention is that the opening degree of the sub-throttle valve is controlled by the choke valve mechanism. During the engine start operation, a large amount of the air provided to the engine passes through the secondary passageway due to the absence of a check valve within the secondary passageway. As a result, it is important to control the degree of opening of the secondary throttle valve in response to the operation of the choke valve mechanism, and this control should be done rationally to avoid the formation of unnecessary contaminants in the engine exhaust gas during starting conditions. Must be precise and accurate. Other and more detailed objects and advantages will appear below.

図面において、全体として１で示される気化器
組立体は内燃エンジンの主燃焼室に稀薄空燃混合
気を供給するための一次通路２を有する。該気化
器組立体は更に該エンジンの副燃焼室に濃厚空燃
混合気を供給するための副通路３を有する。通路
２はベンチユリスロート４を有すると共に絞り軸
６及び作動子７に連る絞り弁５を備える。略同様
に、副通路３はベンチユリスロート８を有すると
共に絞り軸１０及び作動子１１に連る絞り弁９を
備える。該２個の絞り軸６，１０は腕１２，１３
及びリンク１４により対応する運動のために連結
される。 A carburetor assembly, indicated generally at 1 in the drawings, has a primary passage 2 for supplying a lean air-fuel mixture to a main combustion chamber of an internal combustion engine. The carburetor assembly further has a sub-passage 3 for supplying a rich air/fuel mixture to the sub-combustion chamber of the engine. The passage 2 has a bench lily throat 4 and is equipped with a throttle valve 5 connected to a throttle shaft 6 and an actuator 7. In substantially the same way, the auxiliary passage 3 has a vent lily throat 8 and is equipped with a throttle valve 9 connected to a throttle shaft 10 and an actuator 11 . The two aperture shafts 6, 10 are the arms 12, 13.
and are connected for corresponding movement by links 14.

チヨーク弁１６はベンチユリスロート４の上流
に通路２内に取付けられそして気化器本体１８上
に廻動すべく取付けられた軸１７上に取付けられ
る。固定スリーブ１９が気化器本体から突出して
チヨーク軸１７の一部を囲繞する。チヨーク作動
子部材２０は固定スリーブ１９上に廻動すべく取
付けられたハブ部２１を有すると共に制御ケーブ
ル２３の端部上に設けた端子金具２２を受入れる
ためのソケツト２１ａを備える。部材２０上に設
けた弓形溝２４は制御ケーブル２３を受入れる。
捩りばね２５は気化器本体１８と一体に形成され
た中空ハブ２６を囲繞すする。該ハブ２６と固定
スリーブ１９とは単一の一体のユニツトとして機
能する。捩りばね２５の一端は固定ストツプピン
２７に固定され、その他端は作動子部材２０に設
けたストツプ指２８に係合する。 The choke valve 16 is mounted in the passageway 2 upstream of the bench lily throat 4 and mounted on a shaft 17 mounted for rotation on the carburetor body 18. A fixing sleeve 19 projects from the carburetor body and surrounds a portion of the shaft 17. The yoke actuator member 20 has a hub portion 21 mounted for rotation on the stationary sleeve 19 and includes a socket 21a for receiving a terminal fitting 22 on the end of the control cable 23. An arcuate groove 24 on member 20 receives control cable 23.
The torsion spring 25 surrounds a hollow hub 26 formed integrally with the carburetor body 18. The hub 26 and fixed sleeve 19 function as a single integral unit. One end of the torsion spring 25 is fixed to a fixed stop pin 27, and the other end engages with a stop finger 28 provided on the actuator member 20.

制御ケーブル２３は収容チユーブ３０内に摺動
しそして一端に固定の手動ノブ３２を有する摺動
ロツド３１に固着される。摺動ロツド３１は固定
壁３３内の開口を介して突出しそして部品３４，
３５は固定チユーブ３０をこの壁３３に挾着すべ
く作用する。この記述から、ノブ３２が手動で握
持されそして第１図で左方に動かされたときケー
ブル２３は作動子部材２０を捩りばね２５の力に
抗して時計方向に動かす事が理解されるであろ
う。 The control cable 23 slides into the receiving tube 30 and is secured to a slide rod 31 having a fixed manual knob 32 at one end. Sliding rod 31 projects through an opening in fixed wall 33 and parts 34,
35 serves to clamp the fixed tube 30 to this wall 33. From this description it will be understood that when knob 32 is manually grasped and moved to the left in FIG. 1, cable 23 moves actuator member 20 clockwise against the force of torsion spring 25. Will.

固定スリーブ１９上に廻動すべく嵌合されて、
ロツド４０にピボツト３９で軸着連結された腕３
８を有するクランク部材３７が存する。該部材３
７は更にチヨーク軸１７に固定の要素４３上の戻
し耳片４２に係合する腕４１を有する。第２の捩
りばね４４が作動子部材２０のハブ部を囲繞し、
それは要素４３に係合する一端と作動子部材２０
に係合する他端とを有する。該捩りばね４４の作
用は第１図示のように要素４３とチヨーク軸１７
とを作動子部材２０に対し時計方向に動かすこと
である。 rotatably fitted onto the fixed sleeve 19;
Arm 3 connected to rod 40 by pivot 39
There is a crank member 37 with 8. The member 3
7 further has an arm 41 which engages a return lug 42 on an element 43 fixed to the yoke shaft 17. A second torsion spring 44 surrounds the hub portion of the actuator member 20;
It has one end that engages element 43 and actuator member 20.
and the other end that engages with the other end. The action of the torsion spring 44 is such that the element 43 and the chain yoke shaft 17 act as shown in the first figure.
and clockwise relative to the actuator member 20.

カム面４９が作動子部材２０上に形成され、こ
のカム面４９は２個の別個の従動子要素と協動す
る。第３図及び第４図示のように、従動子要素５
１は固定ピン５３上に廻動すべく嵌合された運動
制限子部材５２上に固定される。該制限子部材５
２は更にストツプ要素５４を保持し、それは部材
３７上の突起５５の反時計方向の運動を制限すべ
く協動する。捩りばね５６は制限子部材５２に係
合する一端と固定ピン５７ａに係合する他端とを
有し、従つて該ばね５６は従動子要素５１をカム
面４９と接触に保持すべく部材５２を時計方向に
動かすように作用する。 A camming surface 49 is formed on the actuator member 20, which camming surface 49 cooperates with two separate follower elements. As shown in FIGS. 3 and 4, the follower element 5
1 is fixed on a movement limiter member 52 fitted for rotation on a fixing pin 53. The limiter member 5
2 further carries a stop element 54, which cooperates to limit the counterclockwise movement of the projection 55 on the member 37. The torsion spring 56 has one end that engages the limiter member 52 and the other end that engages the fixed pin 57a, such that the spring 56 is attached to the member 52 to hold the follower element 51 in contact with the cam surface 49. acts to move clockwise.

第２従動子要素５７はカム面４９と係合しそし
てこの要素５７はレバ５８上に取付けられ、該レ
バ５８は５９で軸支されると共に絞り弁作動子７
上に固定の指６１と係合自在の丸味を付した端部
６０を有する。捩りばね６２は従動子要素５７を
カム面４９に接触に保つべく作用する。この記述
から作動子部材２０の第３図示の位置への廻動に
よればレバ５８は捩りばね６２の作用に抗した反
時計方向の運動を生じ、それによる作動子７は絞
り弁５を閉じ位置から時計方向に動かすべくされ
ることが理解されるであろう。ロツド４０は部材
３７上のピボツト３９を全体として６４で示され
る真空ブレーカ組立体の運動部６３に連結する。
可撓ダイヤフラム６５は膨脹自在の室６７を作る
べく壁６６と協動する。この室６７はマニホルド
真空圧の局部に導かれる吸入通路６９，７０にポ
ート６８を介して連る。エンジンが動くとき、吸
入マニホルド内の真空圧は通路６９を介して膨脹
自在の室６７に反映される。圧縮ばね７２はダイ
ヤフラム６５の中心部６３に室６７の容積を増大
する方向に作用する。 A second follower element 57 engages the cam surface 49 and is mounted on a lever 58 which is pivoted at 59 and which is mounted on the throttle valve actuator 7.
It has a rounded end 60 that can be freely engaged with a fixed finger 61 on the top. Torsion spring 62 acts to keep follower element 57 in contact with cam surface 49. From this description, rotation of the actuator member 20 to the position shown in the third figure causes the lever 58 to move counterclockwise against the action of the torsion spring 62, which causes the actuator 7 to close the throttle valve 5. It will be appreciated that it is to be moved clockwise from position. Rod 40 connects pivot 39 on member 37 to a motion section 63 of the vacuum breaker assembly, indicated generally at 64.
A flexible diaphragm 65 cooperates with walls 66 to create an inflatable chamber 67. This chamber 67 communicates via a port 68 with suction passages 69, 70 which are led locally to the manifold vacuum pressure. When the engine is running, the vacuum pressure in the intake manifold is reflected through passageway 69 into inflatable chamber 67. The compression spring 72 acts on the central portion 63 of the diaphragm 65 in a direction to increase the volume of the chamber 67.

真空ブレーカ６４の目的はエンジンが初期のク
ランキングからそれ自身の力の下に移るや否やチ
ヨーク弁１６を開き方向に動かすものである。 The purpose of the vacuum breaker 64 is to move the choke valve 16 in the opening direction as soon as the engine is under its own power from initial cranking.

かくてエンジンが休止し大気圧が室６７内に存
するとき、圧縮ばね７２はダイヤフラム６５を伸
長してロツド４０を第１図示の位置から左方に動
かす。エンジンがそれ自身の力に移ると、室６７
内の真空圧は可撓ダイヤフラム６５を第１図示の
位置に動かし、ばね７２を圧縮し、チヨーク弁１
６を周囲の温度に依存させるべくストツプ要素５
４により制御されるある程度に動かす。一次絞り
弁作動子７上の指６１は調節自在のストツプねじ
１５上に休止する。 Thus, when the engine is at rest and atmospheric pressure exists in chamber 67, compression spring 72 stretches diaphragm 65 to move rod 40 to the left from the first illustrated position. When the engine moves to its own power, chamber 67
The vacuum pressure inside moves the flexible diaphragm 65 to the first shown position and compresses the spring 72, causing the valve 1
Stop element 5 to make 6 dependent on the ambient temperature
4 to a degree controlled by 4. A finger 61 on the primary throttle valve actuator 7 rests on an adjustable stop screw 15.

周囲温度が冷たくなく、例えば60度Ｆ以上であ
りそしてエンジンが不使用の期間の後に先づ始動
さるべきとき、乗物の操作者はノブ３２をつかん
でそれをばね負荷ボール７３がロツド３１内の切
欠７４に入る迄第１図で左方に引く。これによれ
ば作動子部材２０及び制限子５２、そしてレバ５
８及び絞り弁５は第３図示の位置にもたらされ
る。エンジンがそれ自身の力に移るべく始動する
や否や、室６７の真空圧は可撓ダイヤフラム６５
をばね７２の作用に抗して第３図示の位置に動か
す。この運動によれだロツド４０は部材３７を第
３図示の位置に揺動する。チヨーク弁１６は次で
中間位置に保たれる。エンジンが暖機されるや否
や乗物の操作者はノブ３２を第１図示の位置に戻
し、チヨーク弁１６はそれの全開位置に戻る。 When the ambient temperature is not cold, e.g., above 60 degrees F., and the engine is to be started after a period of non-use, the vehicle operator grasps the knob 32 and causes the spring-loaded ball 73 to close in the rod 31. Pull it to the left in Fig. 1 until it enters the notch 74. According to this, the actuator member 20, the limiter 52, and the lever 5
8 and the throttle valve 5 are brought into the position shown in the third figure. As soon as the engine starts to transfer to its own power, the vacuum pressure in chamber 67 is transferred to flexible diaphragm 65.
is moved against the action of spring 72 to the position shown in the third figure. This movement causes the welter rod 40 to swing the member 37 to the position shown in the third figure. The check valve 16 is then held in an intermediate position. Once the engine is warmed up, the vehicle operator returns knob 32 to the first illustrated position and valve 16 returns to its fully open position.

若し周囲温度が冷たく例えば約60度Ｆ以下であ
ると、乗物の操作者はチヨークノブ３２を引きそ
れを最大範囲迄動かし、そのとき作動子２０上の
２８は固定ピン２７に係合する。作動子２０、制
限子、５２、レバ５８及び絞り弁作動子７は次で
第４図示の位置に存する。初期のクランキングの
後そしてエンジンがそれ自身の力に移るとき部材
３７は真空ブレーカ及びそれのロツド４０により
突起５５が制限子５２上のストツプ要素５４に接
する迄動かされる。チヨーク弁１６は次で第４図
示の位置である。エンジンが暖機された後操作者
はノブ３２を第１図示の位置に戻し、そのときチ
ヨーク弁１６は全開位置に戻る。 If the ambient temperature is cold, for example below about 60 degrees F., the vehicle operator pulls on the tire yoke knob 32 and moves it to its maximum range, at which time 28 on the actuator 20 engages the locking pin 27. The actuator 20, limiter 52, lever 58 and throttle valve actuator 7 are then in the position shown in FIG. After initial cranking and when the engine is transferred to its own power, member 37 is moved by the vacuum breaker and its rod 40 until projection 55 abuts stop element 54 on limiter 52. The choke valve 16 is then in the position shown in Figure 4. After the engine has warmed up, the operator returns knob 32 to the first illustrated position, at which time valve 16 returns to its fully open position.

チヨーク弁１６の各位置において一次絞り弁５
及び副絞り弁９は共に排気ガス中の不要の汚染物
を最小化するに合致したエンジンの最良の作動特
性を確保すべき位置に動かされることを知るであ
ろう。 The primary throttle valve 5 at each position of the choke valve 16
It will be appreciated that both the and secondary throttle valves 9 are moved to a position that should ensure the best operating characteristics of the engine consistent with minimizing unwanted contaminants in the exhaust gas.

第９図示の本発明の変形例において、真空ブレ
ーカ６４はダンパ装置７５を補充される。この装
置は壁７８とダイヤフラム７６との間の可変容量
の液体室７７を作るべく可動部材６３に固定され
た中心部を有する可撓性のダイヤフラム７６を含
む。絞り通路７９が室７７を貯室８０に連通す
る。ロツド４０及び部品６３の運動はオリフイス
７９を通過する流体のダツシユポツト作用により
減衰される。減衰作用は液体が冷たいときに最大
であり、液体が暖まつてそれの粘度が変化したと
き減少する。調節自在のストツプ８１がロツド４
０及び運動部品６３の第９図で右方への運動を制
限すべく設けられ得る。第６，７及び８図示の本
発明の変形例において、チヨーク組立体は手動の
代りに自動的に作動される。一次通路８７内のチ
ヨーク弁は軸３８上に設けられる。該軸８８は気
化器本体９０から突出する固定中空ハブ８９を介
して突出する。 In the variant of the invention shown in FIG. 9, the vacuum breaker 64 is supplemented with a damper device 75. The device includes a flexible diaphragm 76 having a central portion fixed to a movable member 63 to create a variable volume liquid chamber 77 between a wall 78 and the diaphragm 76. A throttle passage 79 communicates chamber 77 with storage chamber 80 . Movement of rod 40 and component 63 is damped by the dumppot action of fluid passing through orifice 79. The damping effect is greatest when the liquid is cold and decreases as the liquid warms up and its viscosity changes. Adjustable stop 81 is rod 4
0 and movement part 63 may be provided to limit movement to the right in FIG. In the variations of the invention shown in figures 6, 7 and 8, the yoke assembly is actuated automatically instead of manually. A choke valve in the primary passage 87 is provided on the shaft 38. The shaft 88 projects through a fixed hollow hub 89 that projects from the carburetor body 90.

螺旋バイメタル要素９２を内部に有する通常の
バイメタル組立体９１が気化器本体上に取付けら
れる。螺旋バイメタル要素９２はチヨーク軸８８
の突出端に固定の連結子部材９４の腕９３上にそ
の一端で連結される。通常の電気的ヒータ９５が
組立体９１内に含まれる。温度変化によれば該装
置９１のバイメタル要素９２は部材９４の腕９３
に力を与えてチヨーク弁８６を通路８７内で廻動
すべく傾向する。 A conventional bimetallic assembly 91 having a helical bimetallic element 92 therein is mounted on the carburetor body. The helical bimetallic element 92 is attached to the chiyoke shaft 88
One end thereof is connected onto an arm 93 of a connector member 94 fixed to the protruding end of the connector member 94 . A conventional electrical heater 95 is included within assembly 91. Due to temperature changes, the bimetallic element 92 of the device 91 will cause the arm 93 of the member 94 to
forces to tend the valve 86 to rotate within the passageway 87.

バイメタル組立体９１は明瞭化のために第６図
から削除されバイメタル要素９２の一端部のみが
示される。 Bimetal assembly 91 has been removed from FIG. 6 for clarity and only one end of bimetal element 92 is shown.

中空固定ハブ８９上に廻動すべく嵌合された部
材９６はロツド９７ａに軸支連結される第１腕９
７を有し、該ロツド９７ａは第１乃至第３図或は
第９図示の何れかの型に類似の真空ブレーカ組立
体（図示しない）に導かれる。部材９６は更にカ
ム部材１０２上の複数個の段９９，１００，１０
１の何れかに接続すべく位置される突起９８ａを
有する。このカム部材１０２は気化器本体９０上
に設けた固定ピン１０３上に廻動すべく嵌合され
る。バイメタル要素１０４はその一端においてカ
ム部材１０２と他端において固定ピン１０５とに
取付けられる。 A member 96 rotatably fitted onto the hollow fixed hub 89 is connected to the first arm 9 which is pivotally connected to the rod 97a.
7, and the rod 97a is guided into a vacuum breaker assembly (not shown) similar to any of the types shown in FIGS. 1-3 or 9. Member 96 further includes a plurality of steps 99, 100, 10 on cam member 102.
1. It has a protrusion 98a positioned to be connected to either one of the two. This cam member 102 is rotatably fitted onto a fixing pin 103 provided on the carburetor body 90. Bimetal element 104 is attached to cam member 102 at one end and to fixation pin 105 at the other end.

カム部材１０７は中空ハブ８９上に廻動すべく
嵌合されそして該部材の一部は弓状の段１０８，
１０９を有する。揺動子部材１１２上の突起１１
０はこれら弓形段１０８，１０９の何れかに係合
すべく位置される戻りばね１１１は部材１０７に
固定の一端を有すると共にその他端は部材９４に
固定される。 A cam member 107 is rotatably fitted onto the hollow hub 89 and a portion of the member includes an arcuate step 108,
It has 109. Protrusion 11 on rocker member 112
A return spring 111, which is positioned to engage either of these arcuate steps 108, 109, has one end fixed to member 107 and the other end fixed to member 94.

該揺動子部材は１１３において廻動自在に取付
けられそしてリンク１１５の一端に軸支連結され
た腕１１４を備える。リンク１１５の他端は作動
子１１７上に設けたクランク腕１１６に軸支連結
される。この作動子１１７は一次通路８７内のベ
ンチユリスロード１２０の下側の一次絞り弁１１
９のための軸１１８に固定される。副通路及び副
絞り弁は第６，７及び８図から削除されるが、こ
れらは本発明のこの例において存在すること及び
先に述べたと類似のリンケージ装置が一次絞り弁
と副絞り弁との廻動運動を対応させるべく使用さ
せる事は理解さるべきである。第６，７及び８図
示の本発明のこの実施例の作動において、通常の
バイメタル組立体９１及びそれの通常の電気的ヒ
ータ９５は腕９３とチヨーク弁８６とを螺旋バイ
メタル要素９２の温度に応じて位置させるべく作
用する。 The rocker member includes an arm 114 rotatably mounted at 113 and pivotally connected to one end of a link 115. The other end of the link 115 is pivotally connected to a crank arm 116 provided on an actuator 117. This actuator 117 is connected to the primary throttle valve 11 below the bench Ulys road 120 in the primary passage 87.
9 is fixed to the shaft 118. Although the secondary passages and secondary throttle valves have been removed from Figures 6, 7, and 8, they are present in this example of the invention and a linkage arrangement similar to that previously described connects the primary and secondary throttle valves. It should be understood that a rotational motion can be used to correspond. In operation of this embodiment of the invention shown in FIGS. 6, 7, and 8, a conventional bimetallic assembly 91 and its conventional electric heater 95 control the arm 93 and the valve 86 in response to the temperature of the helical bimetallic element 92. act to position it.

エンジンが始動さるべきときそして周囲温度が
冷たく例えば60度Ｆ以下のちとき、チヨーク弁８
６は閉じ位置に存しそして他の部品は図示のよう
に位置される。エンジンの初期のクランキングの
間、一次通路８７を介して下方に引かれる空気は
チヨーク弁８６の支持軸８８に対する偏心取付け
の故に開き位置側に該チヨーク弁８６を動かすべ
く作用する。チヨーク弁８６及び軸８８の第６図
で反時計方向のこの廻動運動はバイメタル条片９
２の弾性ばね作用に抗して及び戻りばね１１１の
力に抗して行われる。エンジンが始動するとき、
真空ブレーカロツド９７ａは右に引かれ部材９６
及びその腕９７を反時計方向に動かす。突起９８
ａはチヨーク弁８６の開放運動の程度を制限すべ
く部材１０２上の段面９９と接触する。エンジン
が暖機するとバイメタル条片１０４は部材１０２
を反時計方向に廻動し従つて突起９８ａは下方に
段１００にそして次で段１０１に動く。 When the engine is to be started and the ambient temperature is cold, e.g. below 60 degrees F, the check valve 8
6 is in the closed position and the other parts are positioned as shown. During initial cranking of the engine, air drawn downwardly through the primary passage 87 acts to move the choke valve 86 toward the open position due to its eccentric mounting relative to the support shaft 88. This rotational movement of the valve 86 and shaft 88 in the counterclockwise direction in FIG.
2 and against the force of the return spring 111. When the engine starts
The vacuum breaker rod 97a is pulled to the right and the member 96
and move its arm 97 counterclockwise. Protrusion 98
a contacts a stepped surface 99 on member 102 to limit the extent of opening movement of valve 86. When the engine warms up, the bimetallic strip 104 is removed from the member 102.
counterclockwise, so that projection 98a moves downward to step 100 and then to step 101.

揺動子部材１１２上の突起１１０は段面１０８
にまさつ的に係合し、バイメタル組立体が部材１
０７の反時計方向の廻動を許容すべく暖められた
とき突起１１０は段１０８から段１０９にそして
更に追加の段を介して下方にチヨーク弁８６が全
開位置となる迄動く。突起１１０及び部材１１２
のこの運動はリンク１１５を介して一次絞り弁作
動子１１７の腕１１６に伝達される。部材９４上
の腕１２１及び部材１１２上の腕１２２はエンジ
ンが始動期間中オーバ回転となつたとき荷解除機
構として作用すべく協動する。この機構は空燃混
合気の濃度を減少すべく増大した空気流を許容す
るように閉じたチヨーク弁８６を部分的に開く。
これは絞り弁を広く開くべく加速ペダルを押圧す
ることにより達成される。これがなされたとき、
腕１２２は腕１２１と接触するに至つてチヨーク
弁８６を一部開放位置に強制する。追加の空気は
エンジンの始動を許容すべく充分に燃料混合気を
稀薄化する。 The protrusion 110 on the rocker member 112 has a stepped surface 108
The bimetallic assembly engages member 1
When warmed to permit counterclockwise rotation of the valve 86, the protrusion 110 moves from stage 108 to stage 109 and then downwardly through additional stages until the valve 86 is in the fully open position. Protrusion 110 and member 112
This movement is transmitted via link 115 to arm 116 of primary throttle valve actuator 117. Arm 121 on member 94 and arm 122 on member 112 cooperate to act as an unloading mechanism when the engine is over-revved during startup. This mechanism partially opens the closed choke valve 86 to allow increased air flow to reduce the concentration of the air/fuel mixture.
This is accomplished by pressing the accelerator pedal to open the throttle valve wide. When this is done,
When arm 122 comes into contact with arm 121, it forces valve 86 into a partially open position. The additional air dilutes the fuel mixture sufficiently to allow the engine to start.

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

第１図は本発明の好ましい実施例を示す一部截
除及び一部截断の側面図でチヨーク弁は全開に示
される。第２図は第１図と同じ位置の部品を示す
一部截除の平面図、第３図は第１図に類似するが
部品のあるものは中間位置に有する側面図、第４
図はチヨーク弁の一部閉じ位置に対応する位置の
該部品を示す第１図に類似の側面図、第５図は第
１図の５―５線截断の詳細断面図、第６図は一部
を除去した変形例を示す側面図、第７図は第６図
の７―７線截断の断面図、第８図は第６図の８―
８線截断の詳断面図、第９図はダンパを備えた真
空ブレーカの変形例である。 １……気化器組立体、２……一次通路、３……
副通路、５，９……絞り弁、６，１０……軸、１
４……リンク、１６……チヨーク弁、１７……
軸、２０……作動子部材、４９……カム面、５８
……レバ。 FIG. 1 is a partially cut-away and partially cut-away side view of a preferred embodiment of the invention, with the choke valve shown fully open. Fig. 2 is a partially cutaway plan view showing parts in the same position as Fig. 1; Fig. 3 is a side view similar to Fig. 1 but with some parts in intermediate positions;
The drawing is a side view similar to Fig. 1 showing the parts in a position corresponding to the partially closed position of the check valve, Fig. 5 is a detailed sectional view taken along line 5--5 in Fig. 7 is a sectional view taken along line 7-7 in FIG. 6, and FIG. 8 is a sectional view taken along line 8-7 in FIG. 6.
FIG. 9, a detailed sectional view taken along line 8, is a modification of the vacuum breaker equipped with a damper. 1... Carburetor assembly, 2... Primary passage, 3...
Sub-passage, 5, 9... Throttle valve, 6, 10... Shaft, 1
4...Link, 16...Chiyok valve, 17...
Shaft, 20... Actuator member, 49... Cam surface, 58
...Reba.

Claims (1)

【特許請求の範囲】 １ 気化器組立体において、内燃エンジンに空燃
混合気を供給すべく適合される通路を形成する装
置と、該通路内に廻動すべく取付けられた絞り弁
と、該通路内の絞り弁の上流に廻動すべく軸上に
取付けられたチヨーク弁と、チヨーク軸の軸線の
廻りに廻動すべく取付けられて手動にて作動され
るチヨーク作動部材とから成り、該部材はカム面
を有し、更にチヨーク軸から隔離する軸線の廻り
に廻動すべく取付けられた制限子と、該カム面に
係合する該制限子の従動子と、チヨーク軸の軸線
の廻りに廻動すべく取付けられた廻動部材とから
なり、該廻動部材はチヨーク弁の開放運動の範囲
を制限すべく該制限子に係合自在の要素を有し、
更に該廻動部材を作動すべく連結された真空ブレ
ーカと、該チヨーク作動部材の運動に応じて絞り
弁を動かすべくカム面に係合される従動子を含む
装置とから成る気化器チヨーク。 ２ 気化器組立体において、内燃エンジンに空燃
混合気を供給すべく適合される通路を形成する装
置と、該通路内に廻動すべく取付けられた絞り弁
と、該通路内の絞り弁の上流において廻動すべく
軸上に取付けられたチヨーク弁と、該チヨーク軸
の軸線の廻りに廻動すべく取付けられた回動部材
と、該チヨーク軸と絞り弁との運動を対応させる
カム部材、揺動子部材及びリンクからなる装置
と、チヨーク軸を廻動すべく連結された温度応答
部材と、チヨーク軸から隔離した軸線の廻りに廻
動すべく取付けられた制限子と、該制限子を廻動
するための温度応答装置とからなり、該廻動部材
はチヨーク弁の開放運動の範囲を制限すべく該制
限子に係合自在の要素を有し、更に該廻動部材を
作動すべく連結された真空ブレーカとから成る気
化器チヨーク。 ３ 前記揺動子部材は、該部材に設けた突起を、
前記カム部材に設けた弓形の段に係合させた特許
請求の範囲第２項記載の気化器チヨーク。Claims: 1. A carburetor assembly comprising: a device defining a passageway adapted to supply an air-fuel mixture to an internal combustion engine; a throttle valve mounted for rotation within the passageway; It consists of a choke valve mounted on a shaft to rotate upstream of the throttle valve in the passage, and a manually actuated choke valve actuating member mounted to rotate around the axis of the choke shaft. The member has a cam surface and further includes a limiter mounted for rotation about an axis spaced from the yoke shaft, a follower of the limiter that engages the cam surface, and a limiter mounted for rotation about the axis of the yoke shaft. a rotatable member mounted for rotation, the rotatable member having an element engageable with the limiter to limit the range of opening movement of the choke valve;
A carburetor wheel further comprising a vacuum breaker coupled to actuate the rotary member, and a device including a follower engaged with a cam surface to move a throttle valve in response to movement of the rotary actuating member. 2. In a carburetor assembly, a device forming a passage adapted to supply an air-fuel mixture to an internal combustion engine, a throttle valve mounted for rotation within the passage, and a throttle valve within the passage; A yoke valve mounted on a shaft to rotate upstream, a rotating member mounted to rotate around the axis of the yoke shaft, and a cam member that makes the motions of the yoke shaft and the throttle valve correspond. , an apparatus comprising an oscillator member and a link, a temperature-responsive member coupled for rotation about a chiyoke shaft, a limiter mounted for rotation about an axis spaced from the chiyoke shaft, and the limiter. a temperature-responsive device for rotating the rotating member, the rotating member having an element engageable with the limiter to limit the range of opening movement of the choke valve; A vaporizer chain consisting of a vacuum breaker and a vacuum breaker connected to each other. 3. The rocker member has a protrusion provided on the member,
3. A carburetor yoke according to claim 2, wherein said cam member is engaged with an arcuate step provided on said cam member.
JP56127329A 1973-07-30 1981-08-15 Carburetter choke Granted JPS5765840A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00383785A US3837322A (en) 1973-07-30 1973-07-30 Carburetor choke

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP11227273A Division JPS5713747B2 (en) 1973-07-30 1973-10-08

Publications (2)

Publication Number Publication Date
JPS5765840A JPS5765840A (en) 1982-04-21
JPS6143539B2 true JPS6143539B2 (en) 1986-09-27

Family

ID=23514717

Family Applications (3)

Application Number Title Priority Date Filing Date
JP11227273A Expired JPS5713747B2 (en) 1973-07-30 1973-10-08
JP12233977A Pending JPS54123A (en) 1973-07-30 1977-10-14 Carbureter choke
JP56127329A Granted JPS5765840A (en) 1973-07-30 1981-08-15 Carburetter choke

Family Applications Before (2)

Application Number Title Priority Date Filing Date
JP11227273A Expired JPS5713747B2 (en) 1973-07-30 1973-10-08
JP12233977A Pending JPS54123A (en) 1973-07-30 1977-10-14 Carbureter choke

Country Status (17)

Country Link
US (1) US3837322A (en)
JP (3) JPS5713747B2 (en)
AR (1) AR222284A1 (en)
BE (1) BE808697A (en)
BR (1) BR7402253A (en)
CA (1) CA985585A (en)
CH (1) CH581785A5 (en)
CS (1) CS204978B2 (en)
DD (1) DD113075A5 (en)
DE (1) DE2362286C2 (en)
ES (1) ES421492A1 (en)
FR (1) FR2239598B1 (en)
GB (1) GB1458518A (en)
IT (1) IT1000488B (en)
NL (1) NL7317161A (en)
SE (1) SE409490B (en)
SU (1) SU820668A3 (en)

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Also Published As

Publication number Publication date
FR2239598B1 (en) 1979-10-19
BR7402253A (en) 1975-12-02
JPS54123A (en) 1979-01-05
CH581785A5 (en) 1976-11-15
FR2239598A1 (en) 1975-02-28
JPS5035536A (en) 1975-04-04
DD113075A5 (en) 1975-05-12
IT1000488B (en) 1976-03-30
CS204978B2 (en) 1981-04-30
DE2362286C2 (en) 1984-02-16
DE2362286A1 (en) 1975-02-20
US3837322A (en) 1974-09-24
NL7317161A (en) 1975-02-03
AU6224873A (en) 1975-05-08
SE409490B (en) 1979-08-20
CA985585A (en) 1976-03-16
SE7316969L (en) 1975-01-31
AR222284A1 (en) 1981-05-15
GB1458518A (en) 1976-12-15
JPS5713747B2 (en) 1982-03-18
JPS5765840A (en) 1982-04-21
ES421492A1 (en) 1976-07-16
SU820668A3 (en) 1981-04-07
BE808697A (en) 1974-06-14

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