JPS63143749U - - Google Patents
Info
- Publication number
- JPS63143749U JPS63143749U JP3682187U JP3682187U JPS63143749U JP S63143749 U JPS63143749 U JP S63143749U JP 3682187 U JP3682187 U JP 3682187U JP 3682187 U JP3682187 U JP 3682187U JP S63143749 U JPS63143749 U JP S63143749U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- fuel
- passage
- air
- negative pressure
- 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
- 239000000446 fuel Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 1
- 241000234435 Lilium Species 0.000 description 2
Landscapes
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
Description
第１図は本考案の混合気供給装置の一実施例に
よる全体の構造を示す断面図、第２図は本案装置
におけるマニホールド負圧とスタートバルブ印加
負圧との関係を示すグラフ、第３図は従来装置の
構造を示す断面図である。
１……吸気通路、２……主ベンチユリ部、３…
…エアバルブ、４……負圧アクチユエータ、６…
…スロツトルバルブ、７……スロー系ベンチユリ
部、９……燃料室、１０，１７，２０……レベル
センサ、１６，１９……負圧通路、２５，２５′
……バイパス通路、２６……スタートバルブ、２
９……アイドルスピード制御バルブ、３０……ス
タートエアバルブ、３１……コントロールバルブ
。
FIG. 1 is a sectional view showing the overall structure of an embodiment of the air-fuel mixture supply device of the present invention, FIG. 2 is a graph showing the relationship between the manifold negative pressure and the negative pressure applied to the start valve in the device of the present invention, and FIG. 3 1 is a sectional view showing the structure of a conventional device. 1...Intake passage, 2...Main bench lily, 3...
...Air valve, 4...Negative pressure actuator, 6...
... Throttle valve, 7 ... Slow system bench lily section, 9 ... Fuel chamber, 10, 17, 20 ... Level sensor, 16, 19 ... Negative pressure passage, 25, 25'
...Bypass passage, 26...Start valve, 2
9...Idle speed control valve, 30...Start air valve, 31...Control valve.
Claims (1)
一定に保つように燃料流量を制御することにより
空燃比を適正に保持し得るようにスロー系及びメ
イン系を構成し、燃料通路を共通化してその途中
に配設されたソレノイドバルブによつて両系の燃
料流量を制御すると共に、スロー域において上記
吸気通路を閉塞し得るエアバルブとその下流側の
上記吸気通路内にスロツトルバルブを設け、閉塞
位置にある上記スロツトルバルブの上下流間をバ
イパスする通路へ、クランキング負圧によつて燃
料を供給し得るように構成されたスタートバルブ
を備えた混合気供給装置において、上記スロツト
ルバルブの上流側及び下流側に夫々開口する負圧
取入れ口に通ずる第一及び第二の負圧通路を介し
て上記スタートバルブを作動せしめると共に、上
記第一及び第二の負圧通路に設けた絞りの内径を
相互に整合させることにより、上記スタートバル
ブを、クランキング時に開き、エンジン始動後に
閉じるように制御するようにしたことを特徴とす
る混合気供給装置。 The slow system and main system are configured to maintain an appropriate air-fuel ratio by controlling the fuel flow rate to maintain a constant liquid level in the negative pressure passage that communicates with the fuel passage, and the fuel passage is shared. The fuel flow rate of both systems is controlled by a solenoid valve disposed in the middle of the air valve, and a throttle valve is provided in the intake passage on the downstream side thereof, and an air valve capable of closing the intake passage in the slow range. In the air-fuel mixture supply device including a start valve configured to be able to supply fuel by cranking negative pressure to a passage bypassing between the upstream and downstream sides of the throttle valve in a closed position, the throttle valve The start valve is actuated through first and second negative pressure passages leading to negative pressure intake ports opening on the upstream and downstream sides of the An air-fuel mixture supply device characterized in that the start valve is controlled to open during cranking and close after starting the engine by matching the inner diameters of the start valves with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3682187U JPS63143749U (en) | 1987-03-13 | 1987-03-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3682187U JPS63143749U (en) | 1987-03-13 | 1987-03-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63143749U true JPS63143749U (en) | 1988-09-21 |
Family
ID=30847584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3682187U Pending JPS63143749U (en) | 1987-03-13 | 1987-03-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63143749U (en) |
-
1987
- 1987-03-13 JP JP3682187U patent/JPS63143749U/ja active Pending