JPS6215477Y2 - - Google Patents
Info
- Publication number
- JPS6215477Y2 JPS6215477Y2 JP15365081U JP15365081U JPS6215477Y2 JP S6215477 Y2 JPS6215477 Y2 JP S6215477Y2 JP 15365081 U JP15365081 U JP 15365081U JP 15365081 U JP15365081 U JP 15365081U JP S6215477 Y2 JPS6215477 Y2 JP S6215477Y2
- Authority
- JP
- Japan
- Prior art keywords
- control valve
- valve
- air
- auxiliary
- passage
- 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
- 239000000203 mixture Substances 0.000 claims description 20
- 239000000446 fuel Substances 0.000 claims description 18
- 230000007423 decrease Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Landscapes
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Description
【考案の詳細な説明】
本案は主としてアイドリング時にエンジンの動
力を使用する機器類が作動するときのエンジンの
回転速度低下防止を目的とする気化器の補助混合
気供給装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an auxiliary air-fuel mixture supply device for a carburetor whose purpose is to prevent the rotational speed of the engine from decreasing when equipment that uses engine power is operated during idling.
自動車においてアイドリング時に前照灯、暖房
機器、クーラ等を使用するとエンジンの回転速度
が低下し所要のアイドリングを維持できないこと
がある。そこで本案の出願人は、従来の低速系統
と同様の構造の補助通路を設けて絞り弁の下流側
において吸気路へ開口させ、エンジンの動力を使
用する機器類の動作に応動して開き且つ機器類の
負荷の大小に応じて混合気供給量を増減するよう
に構成された電磁駆動の制御弁を補助通路の空気
ブリードジエツトよりも下流に設けた補助混合気
供給通路を提案した（実願昭55−120228号、特願
昭56−131242号）。この装置によると、暖房機
器、クーラ等を動作させたとき、従来の低速燃料
と同程度の空燃比の混合気を前記機器類の負荷に
応じ増量してエンジンに供給できるのでエンジン
の回転速度を低下させないという利点を有してい
る。 If a headlight, heating device, cooler, etc. are used while a car is idling, the rotational speed of the engine may decrease and the required idling may not be maintained. Therefore, the applicant of the present application provided an auxiliary passage with a structure similar to that of a conventional low-speed system, opened it to the intake passage downstream of the throttle valve, and opened it in response to the operation of equipment that uses engine power. We proposed an auxiliary mixture supply passage in which an electromagnetically driven control valve configured to increase or decrease the amount of mixture supplied according to the magnitude of the load is installed downstream of the air bleed jet in the auxiliary passage. (Sho 55-120228, Patent Application No. Sho 56-131242). According to this device, when heating equipment, coolers, etc. are operated, a mixture with an air-fuel ratio similar to that of conventional low-speed fuel can be supplied to the engine in an increased amount according to the load of the equipment, thereby reducing the engine rotation speed. It has the advantage of not causing any deterioration.
本案は前述の補助通路に、更に手動の調節弁を
設けて通路の有効断面積を調整できるようにした
ことにより、エンジンの動力を使用する機器類の
負荷の大きさ、エンジンの排気量、更にこれらの
ばらつきに応じて補助混合気の量を調整しアイド
リングの回転速度を正確に設定値に維持できるよ
うにしたものである。 In this case, a manual control valve is further installed in the auxiliary passage mentioned above to enable adjustment of the effective cross-sectional area of the passage. The amount of auxiliary air-fuel mixture is adjusted according to these variations, so that the idling rotational speed can be accurately maintained at the set value.
以下本案の実施例を図面に就いて説明すると、
第１図、第２図、第３図において、１は気化器本
体、２は吸気路、３は絞り弁、４は恒油面室、５
は恒油面室４から吸気路２の絞り弁３よりも下流
へ至る補助通路、６は燃料計量用のジエツト、７
および８は空気ブリードジエツト、９は電磁駆動
の制御弁、１０は手動の調節弁を示している。 An example of the present invention will be explained below with reference to the drawings.
In Figures 1, 2, and 3, 1 is the carburetor body, 2 is the intake passage, 3 is the throttle valve, 4 is the constant oil level chamber, and 5
is an auxiliary passage leading from the constant oil level chamber 4 to the downstream side of the throttle valve 3 of the intake passage 2; 6 is a fuel metering jet; 7
8 is an air bleed jet, 9 is an electromagnetically driven control valve, and 10 is a manual control valve.
第１図の実施例は従来の低速系統１１の低速ジ
エツト、第一空気ブリードジエツトを本案のジエ
ツト６、第一の空気ブリードジエツト７と兼用さ
せ、且つ制御弁９は二個の電磁弁９１，９２で構
成したものであつて、第一の電磁弁９１と第二の
電磁弁９２とは第二の空気ブリードジエツト８の
下流側に並列に設けられている。第一の電磁弁９
１の弁体１２１は前照灯、暖房機器のように比較
的小負荷の機器類を動作させる第一のスイツチS1
に応動してソレノイド１４１へ電流が供給された
とき吸引されて第一の弁口１３１を開き、また第
二の電磁弁９２の弁体１２２はクーラのように比
較的大負荷の機器類を動作させる第二のスイツチ
S2に応動してソレノイド１４２へ電流が供給され
たとき吸引されて第二の弁口１３２を開くもの
で、第二の弁口１３２は第一の弁口１３１よりも
大径に形成されている。 In the embodiment shown in FIG. 1, the low speed jet and first air bleed jet of the conventional low speed system 11 are used as the jet 6 and the first air bleed jet 7 of the present invention, and the control valve 9 is composed of two solenoid valves. The first solenoid valve 91 and the second solenoid valve 92 are provided in parallel on the downstream side of the second air bleed jet 8 . First solenoid valve 9
1 valve body 12 1 is the first switch S 1 that operates relatively small load devices such as headlights and heating equipment.
When current is supplied to the solenoid 14 1 in response to this, it is attracted and opens the first valve port 13 1 , and the valve body 12 2 of the second solenoid valve 9 2 is operated when the solenoid 14 1 receives a relatively large load such as a cooler. The second switch that operates the equipment
When current is supplied to the solenoid 142 in response to S2 , it is attracted and opens the second valve port 132 , and the second valve port 132 has a larger diameter than the first valve port 131. is formed.
第２図の実施例は補助通路５を独立して設ける
と共に制御弁９を構成する二つの電磁弁９１，９
２を並列に設けたものであつて、比較的小負荷の
機器類と連動する第一の電磁弁９１の弁体１２１
が第一の弁口１３１を開いたとき補助ジエツト１
５で計量された燃料−空気の混合物に第二の空気
ブリードジエツト８からの空気が加えられた補助
混合気が吸気路２へ供給される。従つて比較的大
負荷の機器類と連動する第二の電磁弁９２のみが
開いたとき前記よりも若干高濃度の補助混合気が
吸気路２へ供給される。 In the embodiment shown in FIG. 2, an auxiliary passage 5 is provided independently and two electromagnetic valves 9 1 , 9 forming a control valve 9 are provided.
2 are provided in parallel, and the valve body 12 1 of the first solenoid valve 9 1 is connected to equipment with a relatively small load.
When the first valve port 131 is opened, the auxiliary jet 1
An auxiliary mixture consisting of the fuel-air mixture metered at 5 plus air from a second air bleed jet 8 is supplied to the intake passage 2. Therefore, when only the second electromagnetic valve 92 , which operates in conjunction with relatively heavily loaded equipment, opens, auxiliary air-fuel mixture with a slightly higher concentration than the above is supplied to the intake passage 2.
これら二つの実施例において、アイドル回転速
度は第一の電磁弁９１が開いたとき100〜200r.p.
m程度上昇し、第一と第二の電磁弁９１，９２が
ともに開いたときまたは第二の電磁弁９２が開い
たとき400〜600r.p.m程度上昇するように設計さ
れており、負荷の大小に応じて混合気供給量が増
減する。 In these two embodiments, the idle rotation speed is 100-200 r.p. when the first solenoid valve 91 is opened.
m, and when both the first and second solenoid valves 9 1 and 9 2 are opened, or when the second solenoid valve 9 2 is opened, it is designed to rise by about 400 to 600 r.pm. The amount of air-fuel mixture supplied increases or decreases depending on the load.
第３図の実施例は補助通路５を独立して設ける
と共に一個の電磁駆動の制御弁９を用いたもので
あつて、制御弁９のソレノイド１４は二組のコイ
ルを有しそれぞれ比較的小負荷の機器類を動作さ
せる第一のスイツチS1と比較的大負荷の機器類を
動作させる第二のスイツチS2に応動し、弁体１２
を三段階に作動して弁口１３の開度を変える。即
ち、弁口１３は第一のスイツチS1によつて少し開
き、第二のスイツチS2によつてこれよりも大きく
開き、二つのスイツチS1，S2がともにオンとなつ
たとき最大に開くもので、負荷の増大に応じて開
度を順次大きくし混合気供給量を増加して前記実
施例と同程度にアイドル回転速度を上昇させるの
である。 In the embodiment shown in FIG. 3, an auxiliary passage 5 is provided independently and a single electromagnetically driven control valve 9 is used.The solenoid 14 of the control valve 9 has two sets of coils, each of which is relatively small. In response to the first switch S 1 that operates equipment with a load and the second switch S 2 that operates equipment with a relatively large load, the valve body 12
is operated in three stages to change the opening degree of the valve port 13. That is, the valve port 13 is opened slightly by the first switch S1 , opened more widely by the second switch S2 , and is opened to the maximum when both switches S1 and S2 are turned on. The opening degree is gradually increased as the load increases, increasing the amount of air-fuel mixture supplied and increasing the idle rotation speed to the same extent as in the previous embodiment.
調節弁１０は弁口１６と針状の弁体１７とを有
し、弁体１７は気化器本体１にねじ込んだ調整ね
じ１８の先端に形成されて外部から手動で弁口１
６の有効断面積を変えるもので、制御弁９の下流
の適所に設けられている。 The control valve 10 has a valve port 16 and a needle-shaped valve body 17. The valve body 17 is formed at the tip of an adjustment screw 18 screwed into the carburetor main body 1, and the valve port 1 is manually adjusted from the outside.
It changes the effective cross-sectional area of the control valve 6 and is provided at an appropriate location downstream of the control valve 9.
尚、調節弁１０は二個用いて第１，２図の実施
例に示した二つの電磁弁９１，９２の下流に各別
に設置し、並列に分岐した補助通路５をそれらの
下流で合流し吸気路２へ開口させてもよい。更
に、調節弁１０の弁体１７に第４図に示したよう
な通孔１９を設け、誤つて全閉にしても一定量の
補助混合気が供給できるようにすることもある。 Note that two control valves 10 are installed separately downstream of the two solenoid valves 9 1 and 9 2 shown in the embodiment of FIGS. 1 and 2, and auxiliary passages 5 branched in parallel are installed downstream of them. They may merge and open into the intake passage 2. Furthermore, a through hole 19 as shown in FIG. 4 may be provided in the valve body 17 of the control valve 10 so that a certain amount of auxiliary air-fuel mixture can be supplied even if the valve is accidentally fully closed.
以上のように構成した本案によると、エンジン
の動力を使用する機器類がアイドリング時に動作
したとき、これに応動して電磁駆動の制御弁が機
器類の負荷の大小に応じて混合気供給量を増減す
るように開いて従来の低速系統と同様に構成され
ている補助通路から低速燃料と同程度の空燃比の
混合気を補給するのであつて、アイドリング時に
暖房機器、クーラ等を動作させても適正量の補助
混合気が自動的に供給されてエンジンの回転速度
の低下を防止し所要のアイドリングを維持するの
である。そして特に本案は補助通路に手動の調節
弁を設けたので、機器類の負荷の大きさ、エンジ
ンの排気量によつて要求される補助混合気の量を
調整し且つこれらのばらつきによる差異を微調節
によつて調整し、回転速度を正確に設定値に維持
できるものであり、且つ調節弁は制御弁の下流に
設けたので混合気の空燃比に影響を与えることな
く供給量のみを調整するように働き、従つてまた
制御弁と調節弁は排気の成分に悪影響を与えない
ものである。 According to the present invention configured as described above, when equipment that uses engine power operates during idling, the electromagnetically driven control valve responds to this by adjusting the amount of air-fuel mixture supplied in accordance with the magnitude of the load on the equipment. It replenishes the air-fuel mixture with the same air-fuel ratio as the low-speed fuel through an auxiliary passage that opens up and down in the same manner as a conventional low-speed system, so even if heating equipment, coolers, etc. are operated during idling. The correct amount of auxiliary air-fuel mixture is automatically supplied to prevent the engine speed from decreasing and maintain the required idling. In particular, this proposal has a manual control valve installed in the auxiliary passage, so it is possible to adjust the amount of auxiliary mixture required depending on the load of the equipment and engine displacement, and to fine-tune the differences caused by these variations. The rotational speed can be maintained accurately at the set value by adjustment, and since the adjustment valve is installed downstream of the control valve, only the supply amount can be adjusted without affecting the air-fuel ratio of the air-fuel mixture. Therefore, the control valve and regulating valve are such that they do not adversely affect the composition of the exhaust gas.
第１図、第２図、第３図は本案のそれぞれ異な
る実施例を示す縦断面図、第４図は調節弁の弁体
の縦断面図である。
２……吸気路、３……絞り弁、４……恒油面
室、５……補助通路、６……ジエツト、７，８…
…空気ブリードジエツト、９……制御弁、１０…
…調節弁、１２，１２１，１２２……弁体、１
４，１４１，１４２……ソレノイド、１６……弁
口、１７……弁体、１８……調整ねじ。
1, 2, and 3 are longitudinal sectional views showing different embodiments of the present invention, and FIG. 4 is a longitudinal sectional view of a valve body of a control valve. 2... Intake path, 3... Throttle valve, 4... Constant oil level chamber, 5... Auxiliary passage, 6... Jet, 7, 8...
...Air bleed jet, 9...Control valve, 10...
...Control valve, 12, 12 1 , 12 2 ... Valve body, 1
4, 14 1 , 14 2 ...Solenoid, 16...Valve port, 17...Valve body, 18...Adjustment screw.
Claims (1)
路が絞り弁の下流側において吸気路へ開口して設
けられ、この補助通路の前記空気ブリードジエツ
トよりも下流にエンジンの動力を使用する機器類
の動作に応動する電磁駆動の制御弁が設けられて
いると共に、前記制御弁よりも下流に手動の調節
弁が設けられており、且つ前記制御弁は前記機器
類の負荷の大小に応じて混合気供給量を増減する
ように構成されている気化器の補助混合気供給装
置。 An auxiliary air-fuel mixture passage having an air bleed jet is provided downstream of the throttle valve and opens into the intake passage, and the auxiliary passage is arranged downstream of the air bleed jet to operate equipment that uses engine power. An electromagnetically driven control valve that responds to the load is provided, and a manual control valve is provided downstream of the control valve, and the control valve controls the air-fuel mixture supply according to the magnitude of the load on the equipment. An auxiliary mixture supply device of the carburetor configured to increase or decrease the quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15365081U JPS5857544U (en) | 1981-10-16 | 1981-10-16 | Auxiliary mixture supply device for carburetor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15365081U JPS5857544U (en) | 1981-10-16 | 1981-10-16 | Auxiliary mixture supply device for carburetor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5857544U JPS5857544U (en) | 1983-04-19 |
| JPS6215477Y2 true JPS6215477Y2 (en) | 1987-04-20 |
Family
ID=29946262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15365081U Granted JPS5857544U (en) | 1981-10-16 | 1981-10-16 | Auxiliary mixture supply device for carburetor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5857544U (en) |
-
1981
- 1981-10-16 JP JP15365081U patent/JPS5857544U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5857544U (en) | 1983-04-19 |
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