JPS58113565A - Air-fuel ratio regulator for carburetor - Google Patents

Air-fuel ratio regulator for carburetor

Info

Publication number
JPS58113565A
JPS58113565A JP21542981A JP21542981A JPS58113565A JP S58113565 A JPS58113565 A JP S58113565A JP 21542981 A JP21542981 A JP 21542981A JP 21542981 A JP21542981 A JP 21542981A JP S58113565 A JPS58113565 A JP S58113565A
Authority
JP
Japan
Prior art keywords
air
engine
fuel ratio
carburetor
path
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
JP21542981A
Other languages
Japanese (ja)
Inventor
Hidetaka Eto
衛藤 秀高
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 JP21542981A priority Critical patent/JPS58113565A/en
Publication of JPS58113565A publication Critical patent/JPS58113565A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M7/00Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/23Fuel aerating devices
    • F02M7/24Controlling flow of aerating air
    • F02M7/28Controlling flow of aerating air dependent on temperature or pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)

Abstract

PURPOSE:To control the air-fuel ratio properly by utilizing the cooling water for an engine to regulate the air in the pilot system of a carburetor. CONSTITUTION:A pilot air path 6 is provided at one side of main air path 1 while a retreatable throttle valve 8 is projected at the intermediate section of said path 6. Upon warming of an engine, the cooling water pressure will increase to push a plunger 15 thus to push down said valve 8 against a spring 11 thereby said path 6 will open to increase the air flow. Consequently the fuel to be fed through a pilot path 5 can be diluted. In such a manner the air-fuel ratio can be corrected in the proper direction in accordance to the engine temperature and the engine rotation.

Description

【発明の詳細な説明】 この発明は、内燃機関用の気化器の空燃比−節装置に関
する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air-fuel ratio control device for a carburetor for an internal combustion engine.

オートバイ尋の小臘のエンジンに使用する気化器は、小
皺に作られていて、空気通路も主通路しかなく、プライ
マリ−と七カングリ−の二つの空気通W&【持つtのに
比較して、空燃比の回転数による調節ができない。それ
で、低速で燃料が薄くなったり、高速で濃くなるような
ことがあって、セツチングがむつかしい。又、エンシン
が冷えている場合には調節ができないので、暖機して復
調するまでに時間がかかる等の不都合がある。
The carburetor used in the small engine of a motorcycle is made with a small wrinkle, and the air passage is only the main passage. Air-fuel ratio cannot be adjusted by rotation speed. Therefore, the fuel may become thin at low speeds or thicken at high speeds, making it difficult to set up. Further, since the engine cannot be adjusted when it is cold, it takes time to warm up and demodulate.

この発明は、かかる点に#1み、エンジンの冷却をする
冷却水を利用して、気化器の・譬イ【スット系の空気を
調整して、空燃比を適正4C14節するようにしたもの
で、以下本発明を図面に示す実施例について説明する。
This invention takes #1 consideration to this point, and uses the cooling water that cools the engine to adjust the air in the carburetor's soot system to maintain an appropriate air-fuel ratio of 4C14. Embodiments of the present invention shown in the drawings will be described below.

気化器は、主空気通路1をピストン型で上下に摺動スる
スロットルバルブ2で開閉するものである。主空気通路
lへは、主燃料通路3から燃料が流れるようにできてい
て、スロットルバルブ2の上下摺動に伴って、スロット
ルバルブ2の下方に突設し九針弁4で燃料の流れを調節
する。一方、主空気通路1の一側に、・母イロット通路
5が開口しており、ノ臂イロット通路5には、ノ母イロ
ットエアー通路6と・ぐイロット燃料通路7からの燃料
圧空気を混入したものが流れるようになっている。
The carburetor opens and closes a main air passage 1 with a piston-type throttle valve 2 that slides up and down. The main air passage 1 is designed to allow fuel to flow from the main fuel passage 3, and as the throttle valve 2 slides up and down, a nine-needle valve 4 protruding below the throttle valve 2 controls the flow of fuel. Adjust. On the other hand, a main pilot passage 5 is opened on one side of the main air passage 1, and fuel pressure air from the main pilot air passage 6 and the pilot fuel passage 7 is mixed into the main pilot passage 5. What you do now flows.

しかして本発明は、・母イロットエアー通路6の途中に
、進退する収り調節弁8を突設する。絞り鍔節弁8の基
端は、プランジャー室9のプランジャー 10 K連結
する。11はスプリングである。一方、エンジンの冷却
水をラジェターとエンジンの関を循環させるエンジンに
連動する冷却水ポン7’12の吐出管13の冷却水ポン
!に近い位置に、一端を吐出管13に開口するプランジ
ャー室14′に−設け、プランシャー室14内にフリー
プランジャー15を摺動自在に挿入する。そして、プラ
ンジャー室9とプランジャー室14とを・譬イア’16
で連通させるっノ母イロノトエアー通路6に流れる空気
の全量は、入口のノ々イロットエアースクリエ−17で
調節できる。
Therefore, in the present invention, a storage adjustment valve 8 that moves forward and backward is provided in a protruding manner in the middle of the main air passage 6. The base end of the throttle flange valve 8 is connected to a plunger 10K of a plunger chamber 9. 11 is a spring. On the other hand, the cooling water pump of the discharge pipe 13 of the cooling water pump 7'12, which is linked to the engine and circulates the engine cooling water between the radiator and the engine! A plunger chamber 14' having one end open to the discharge pipe 13 is provided at a position close to the plunger chamber 14, and a free plunger 15 is slidably inserted into the plunger chamber 14. Then, the plunger chamber 9 and the plunger chamber 14 were
The total amount of air flowing into the main air passage 6 communicated with can be adjusted by an air crease 17 at the inlet.

次にその作用について説明する。Next, its effect will be explained.

冷却水の吐出管13内は、エンジンの回転と共に回転す
る冷却水ポア7’12の回転が上昇するにつれて1通路
抵抗が増して圧力が上昇する。又、冷却水は、エンジン
とラジェターの一定容積内に封入しているので、冷えた
状態から、エンジンが暖機するにつれて、*張して圧力
が上昇する。圧力が上昇すると、プランジャー15を押
し、絞り調節弁8會スプリング11に抗して押し下げ、
・9イロツト工アー通路6を開いて、空気の流れを多く
する。
Inside the coolant discharge pipe 13, as the rotation of the coolant pore 7'12, which rotates with the rotation of the engine, increases, the one-path resistance increases and the pressure rises. Also, since the cooling water is sealed within a certain volume of the engine and radiator, as the engine warms up from a cold state, the pressure increases. When the pressure increases, the plunger 15 is pushed down against the throttle control valve 8 and the spring 11.
・Open the air passage 6 of the 9th pilot to increase the air flow.

従って、・母イロット通路5から出る燃料を少く薄くで
きる。こうして、機関温度及び機関回転数に応じて、空
燃比を適正な方向に補正できる。尚。
Therefore, it is possible to reduce the amount of fuel coming out of the main pilot passage 5. In this way, the air-fuel ratio can be corrected in an appropriate direction depending on the engine temperature and engine speed. still.

エンジンのセツチングによっては、プランジャー室9の
向きを反対にして1回転が上昇するにつれて、絞り調節
弁が突出するようKもできる。
Depending on the setting of the engine, it is also possible to reverse the direction of the plunger chamber 9 so that the throttle control valve protrudes as one revolution increases.

以上説明したように、この発明は、気化器の・母イロッ
トエアー通路に進退する絞り調節弁金膜け、該絞#)I
i1節弁をエンジンに連動する冷却水ポンプの吐出管内
の圧力に応じて進退させるようにしたので、回転数及び
機関温度による吐出管の圧力変化で絞り調節弁を進退さ
せ、・譬イロノトエアーの量を可変することによって空
燃比を適正な方向に補正できる。これによって、気化器
のセツチングが容易になり、燃料消費も少くできる等の
利点が得られる。
As explained above, the present invention provides a throttle control valve gold plate that moves forward and backward into the main air passage of a carburetor, and
Since the i1 control valve is moved forward and backward according to the pressure in the discharge pipe of the cooling water pump linked to the engine, the throttle control valve is moved forward and backward depending on the pressure change in the discharge pipe depending on the rotation speed and engine temperature, and the amount of air is adjusted. By varying the air-fuel ratio, the air-fuel ratio can be corrected in an appropriate direction. This provides advantages such as easier setting of the carburetor and lower fuel consumption.

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

図は本発明の一実施例を示L2、第1図は縦断面図、第
2図は絞り調節弁部分の拡大横断面図である。 6・・・ノイロットエアー通路、8・・・絞り調節弁。 12・・・冷却水ポンプ、13・・・吐出管。 出願人代理人  旙  股  清 I/f51 1 躬 2−囚
The drawings show an embodiment of the present invention L2, FIG. 1 is a longitudinal cross-sectional view, and FIG. 2 is an enlarged cross-sectional view of the throttle control valve portion. 6... Neulot air passage, 8... Throttle control valve. 12...Cooling water pump, 13...Discharge pipe. Applicant's representative Aki Mata I/f51 1. 2-Prisoner

Claims (1)

【特許請求の範囲】 気化器の・臂イロットエアー通路に進退する絞り調節弁
【設け、該絞シ調節弁tエンジンに連動する冷却水ポン
ダの吐出管内の圧力に応じて進退させるよう圧したこと
t−特徴とする気化器の空燃比腕節装置。
[Claims] A throttle control valve that moves forward and backward in the air passageway of the carburetor, and is pressurized to move forward and backward in accordance with the pressure within the discharge pipe of a cooling water ponder that is linked to the engine. t-Characteristic air-fuel ratio adjustment device for a carburetor.
JP21542981A 1981-12-25 1981-12-25 Air-fuel ratio regulator for carburetor Pending JPS58113565A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21542981A JPS58113565A (en) 1981-12-25 1981-12-25 Air-fuel ratio regulator for carburetor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21542981A JPS58113565A (en) 1981-12-25 1981-12-25 Air-fuel ratio regulator for carburetor

Publications (1)

Publication Number Publication Date
JPS58113565A true JPS58113565A (en) 1983-07-06

Family

ID=16672185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21542981A Pending JPS58113565A (en) 1981-12-25 1981-12-25 Air-fuel ratio regulator for carburetor

Country Status (1)

Country Link
JP (1) JPS58113565A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6143259A (en) * 1984-08-07 1986-03-01 Toyota Motor Corp Variable venturi type carburetor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6143259A (en) * 1984-08-07 1986-03-01 Toyota Motor Corp Variable venturi type carburetor

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