JPS6131162Y2 - - Google Patents
Info
- Publication number
- JPS6131162Y2 JPS6131162Y2 JP13034281U JP13034281U JPS6131162Y2 JP S6131162 Y2 JPS6131162 Y2 JP S6131162Y2 JP 13034281 U JP13034281 U JP 13034281U JP 13034281 U JP13034281 U JP 13034281U JP S6131162 Y2 JPS6131162 Y2 JP S6131162Y2
- Authority
- JP
- Japan
- Prior art keywords
- passage
- air
- engine
- control valve
- mixture
- 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 31
- 239000000446 fuel Substances 0.000 claims description 19
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Landscapes
- Means For Warming Up And Starting Carburetors (AREA)
Description
【考案の詳細な説明】
本考案は主として車両用のエンジンにおける始
動用混合気の供給装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a starting air-fuel mixture supply device for a vehicle engine.
従来この種装置として、エンジンの吸気通路に
始動用混合気を導く混合気通路にエンジン温度の
上昇によれば開度を減少される感温制御弁を介入
させると共に、該混合気通路の上流側に外気を導
く空気通路に、該エンジン温度の上昇によれば開
く感温弁とこれに連るデイレイバルブとを介して
該エンジンの吸気負圧を作用されて開く負圧応動
型の制御弁を介入させて、かくて該エンジンの低
温始動時は該混合気通路を介して始動用混合気が
導かれると共にその供給量は該エンジンの温度上
昇に伴い漸次減少されるようにし、更に暖機運転
時は該空気通路が開いてこれを介して外気が導か
れて該混合気が希薄化されるようにした式のもの
は知られるが、この場合その作動特性を更に向上
すべき要求が存する。 Conventionally, this type of device includes a temperature-sensitive control valve whose opening degree is reduced as the engine temperature rises in the air-fuel mixture passage that guides the starting air-fuel mixture into the intake passage of the engine, and a temperature-sensitive control valve that reduces the opening degree as the engine temperature rises. A negative pressure-responsive control valve that opens when negative air intake pressure of the engine is applied is installed in the air passageway that introduces outside air to the engine through a temperature-sensitive valve that opens when the engine temperature rises and a delay valve connected to the temperature-sensitive valve. Thus, when the engine is started at a low temperature, the starting air-fuel mixture is introduced through the air-fuel mixture passage, and its supply amount is gradually reduced as the temperature of the engine rises, and further during warm-up operation. At times, a type in which the air passage is opened and outside air is introduced through it to dilute the air-fuel mixture is known, but in this case there is a need to further improve its operating characteristics.
本考案はかゝる要求に適合する装置を得ること
をその目的としたもので、エンジンの吸気通路１
に始動用混合気を導く混合気通路２にエンジン温
度の上昇に伴い開度を減少される感温制御弁３を
介入させると共に、該混合気通路２の上流側に外
気を導く空気通路４に該エンジン温度の上昇によ
れば開く感温弁５と、デイレイバルブ６とを介し
て該エンジンの吸気負圧を作用されて開く負圧応
動型の制御弁７を介入させる始動用混合気装置に
おいて、該混合気通路２に該制御弁３の上流側と
下流側とを連通する側路８を形成させ、これに前
記制御弁７の開弁時は閉じる制御弁９を介入させ
て成る。 The purpose of the present invention is to obtain a device that meets such requirements, and the purpose of this invention is to
A temperature-sensitive control valve 3 whose opening degree is reduced as the engine temperature rises is inserted into the air-fuel mixture passage 2 that guides the starting air-fuel mixture into the air-fuel mixture passage 2, and an air passage 4 that leads outside air to the upstream side of the air-fuel mixture passage 2 is inserted. In a starting air-fuel mixture system that includes a temperature-sensitive valve 5 that opens when the engine temperature rises, and a negative pressure responsive control valve 7 that opens when negative pressure is applied to the intake air of the engine through a delay valve 6. A side passage 8 is formed in the mixture passage 2 to communicate the upstream side and the downstream side of the control valve 3, and a control valve 9 that is closed when the control valve 7 is opened is intervened in the side passage 8.
図面で１０は気化器、１１は該気化器１０内の
始動用混合気供給ノズルを示し、該ノズル１１は
その下側にエアブリードチユーブ１２と、燃料ジ
エツト１３と、ブリードエアジエツト１４とを備
えると共にエアクリーナ１５に連る空気導入口１
６を備え、かくてこれに始動用混合気が得られる
ようにした。更に前記した２個の制御弁７，９は
共通１個のダイヤフラム１７からのびるものでそ
の背側の負圧室１８内を前記したデイレイバルブ
６と感温弁５とを有する負圧通路１９を介して吸
気通路１の負圧源に連通する型式とする。 In the drawing, 10 indicates a carburetor, and 11 indicates a starting mixture supply nozzle in the carburetor 10. The nozzle 11 has an air bleed tube 12, a fuel jet 13, and a bleed air jet 14 on its lower side. Air inlet 1 connected to air cleaner 15
6, so that a starting mixture can be obtained. Further, the two control valves 7 and 9 mentioned above extend from a common diaphragm 17, and a negative pressure passage 19 having the above-mentioned delay valve 6 and temperature-sensitive valve 5 is formed in the negative pressure chamber 18 on the back side thereof. It is of a type that communicates with the negative pressure source of the intake passage 1 through the intake passage 1.
その作動を説明するに、エンジンの低温始動に
際しては、感温制御弁３が開いて混合気通路２が
作動に用意されると共に制御弁７が閉じて空気通
路４は不作動に存し、かくて始動用混合気が該混
合気通路２を介してエンジンの吸気通路１に導か
れて該エンジンに良好な始動を得られるが、次で
暖気運転によれば感温制御弁３が漸次閉じると共
に制御弁７が次で開いて空気通路４が作動となり
かくて混合気はその供給量を減少されると共にこ
れに空気通路４を介して空気が導入されて濃度が
低下する。 To explain its operation, when starting the engine at a low temperature, the temperature-sensitive control valve 3 opens and the mixture passage 2 is prepared for operation, and the control valve 7 closes and the air passage 4 remains inactive. The starting mixture is introduced into the intake passage 1 of the engine through the mixture passage 2 to obtain a good start of the engine. The control valve 7 then opens and the air passage 4 is about to operate, reducing the supply amount of the air-fuel mixture and introducing air into it through the air passage 4 to reduce its concentration.
以上は従来のものと特に異らないが、本考案に
よれば側路８がこれに協動するもので、即ち前記
した低温始動に際し、制御弁９は開いて側路８も
作動に用意され、かくて始動用混合気は該側路８
を介しても導かれて該混合気の供給を良好にする
と共に、次で暖機運転によれば該制御弁９は閉じ
て該側路８が不作動となり、これを介して混合気
の供給が停止となる。更に暖機後の再始動を考え
るに、この際制御弁９は当初は開いて側路８を作
動状態とするもので、かくて始動用混合気は該側
路８を介して導かれて再始動を良好にすると共
に、該制御弁９は次で遅延して吸気負圧を作用さ
れて閉じて該側路８を不作動としこれを介しての
混合気の供給は停止となる。 Although the above is not particularly different from the conventional one, according to the present invention, the side passage 8 cooperates with this, that is, at the time of the above-mentioned cold start, the control valve 9 is opened and the side passage 8 is also prepared for operation. , thus the starting mixture flows through the side passage 8.
In addition, during warm-up operation, the control valve 9 is closed and the side passage 8 becomes inactive, and the air-fuel mixture is supplied through this. will be stopped. Furthermore, considering restart after warm-up, the control valve 9 is initially opened to put the side passage 8 into operation, so that the starting air-fuel mixture is guided through the side passage 8 and restarted. As well as providing a good start, the control valve 9 is then delayed and closed by the intake vacuum, rendering the bypass 8 inactive and the supply of air-fuel mixture via it being stopped.
このように本考案によるときは混合気通路２に
側路８を形成してこれに常時は開く負圧応動型の
制御弁９を介入させるもので、低温始動に際し該
側路８は始動用混合気を導くべく作用すると共に
更に暖機後の再始動に際してもこれを介して始動
用混合気を導くべく作用し、かくてエンジンの始
動特性を向上させ得られる効果を有する。 In this way, according to the present invention, a side passage 8 is formed in the air-fuel mixture passage 2, and a negative pressure responsive control valve 9 that is normally open is intervened in the side passage 8. When starting at a low temperature, the side passage 8 is used to control the starting mixture. In addition to acting to guide air, it also acts to guide starting air-fuel mixture through this when restarting after warming up, and thus has the effect of improving the starting characteristics of the engine.
図面は本案装置の１例の説明線図である。
１……吸気通路、２……混合気通路、３……感
温制御弁、４……空気通路、５……感温弁、６…
…デイレイバルブ、７……制御弁、８……側路、
９……制御弁。
The drawing is an explanatory diagram of an example of the present device. 1...Intake passage, 2...Mixture passage, 3...Temperature-sensitive control valve, 4...Air passage, 5...Temperature-sensing valve, 6...
...Delay valve, 7...Control valve, 8...Sideway,
9...Control valve.
Claims (1)
合気通路２にエンジン温度の上昇に伴い開度を減
少される感温制御弁３を介入させると共に、該混
合気通路２の上流側に外気を導く空気通路４に該
エンジン温度の上昇によれば開く感温弁５と、デ
イレイバルブ６とを介して該エンジンの吸気負圧
を作用されて開く負圧応動型の制御弁７を介入さ
せる始動用混合気装置において、該混合気通路２
に該制御弁３の上流側と下流側とを連通する通路
８を形成させ、これに前記制御弁７の開弁時は閉
じる制御弁９を介入させて成るエンジンにおける
始動用混合気装置。 A temperature-sensitive control valve 3 whose opening degree is reduced as the engine temperature rises is inserted into the mixture passage 2 that introduces the starting mixture into the air supply passage 1 of the engine. A temperature-sensitive valve 5 that opens when the engine temperature rises, and a negative pressure-responsive control valve 7 that opens when negative air intake pressure of the engine is applied through a delay valve 6 are intervened in the air passage 4 that guides the engine. In the starting mixture device, the mixture passage 2
This air-fuel mixture system for starting an engine comprises a passage 8 communicating between the upstream side and the downstream side of the control valve 3, and a control valve 9 that is closed when the control valve 7 is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13034281U JPS5835652U (en) | 1981-09-03 | 1981-09-03 | Starting mixture system in engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13034281U JPS5835652U (en) | 1981-09-03 | 1981-09-03 | Starting mixture system in engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5835652U JPS5835652U (en) | 1983-03-08 |
| JPS6131162Y2 true JPS6131162Y2 (en) | 1986-09-10 |
Family
ID=29923973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13034281U Granted JPS5835652U (en) | 1981-09-03 | 1981-09-03 | Starting mixture system in engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5835652U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63307292A (en) * | 1987-06-09 | 1988-12-14 | Fujikura Ltd | Mother sheet for producing high purity copper starting sheet |
-
1981
- 1981-09-03 JP JP13034281U patent/JPS5835652U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5835652U (en) | 1983-03-08 |
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