JPS643068U - - Google Patents
Info
- Publication number
- JPS643068U JPS643068U JP9534387U JP9534387U JPS643068U JP S643068 U JPS643068 U JP S643068U JP 9534387 U JP9534387 U JP 9534387U JP 9534387 U JP9534387 U JP 9534387U JP S643068 U JPS643068 U JP S643068U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- canister
- intake pipe
- idling
- purge
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 238000010926 purge Methods 0.000 claims description 5
- 230000002265 prevention Effects 0.000 claims description 3
- 230000001133 acceleration Effects 0.000 claims description 2
- 239000002828 fuel tank Substances 0.000 claims description 2
- 239000002737 fuel gas Substances 0.000 claims 4
- 239000007789 gas Substances 0.000 claims 4
- 238000010586 diagram Methods 0.000 description 2
Description
図面はこの考案の一実施例を示すもので、第１
図は燃料蒸発ガス漏出防止装置の要部の概略構成
図、第２図は加速時のパージ燃料のデユーテイー
制御状態を示す特性図である。
１…燃料タンク、２…エンジン本体、３…吸気
管、４…燃料蒸発ガス通路、７…キヤニスタ、１
４…活性炭、１６…デユーテイー制御弁、２１…
制御部。
The drawing shows one embodiment of this invention.
The figure is a schematic configuration diagram of the main parts of the fuel evaporative gas leakage prevention device, and FIG. 2 is a characteristic diagram showing the duty control state of purge fuel during acceleration. 1... Fuel tank, 2... Engine body, 3... Intake pipe, 4... Fuel evaporative gas passage, 7... Canister, 1
4...Activated carbon, 16...Duty control valve, 21...
control section.
Claims (1)
連結する燃料蒸発ガス通路が設けられるとともに
、蒸発燃料ガスを吸着させるキヤニスタがこの燃
料蒸発ガス通路内に介設され、エンジン本体の運
転停止時およびアイドリング運転時には前記キヤ
ニスタ内の活性炭によつて蒸発燃料ガスが吸着さ
れ、かつエンジン本体のアイドリング運転時以外
の加速運転時には前記キヤニスタ内の活性炭に吸
着されている蒸発燃料ガスがパージされ、このパ
ージ蒸発燃料ガスが前記吸気管内に供給される燃
料蒸発ガス漏出防止装置において、前記キヤニス
タと吸気管との間のパージ燃料供給通路内にこの
パージ燃料供給通路を開閉操作するデユーテイー
制御弁を介設するとともに、エンジン本体の運転
停止時およびアイドリング運転時にはこのデユー
テイー制御弁を閉塞状態で保持し、エンジン本体
のアイドリング運転時以外の加速運転時には前記
デユーテイー制御弁の開動作時間を基準時間より
も短縮させて車両の加速時に前記キヤニスタから
前記吸気管側に導かれるパージ燃料の流量増加を
遅らせるデユーテイー制御を行なう制御部を設け
たことを特徴とする燃料蒸発ガス漏出防止装置。 A fuel evaporative gas passage is provided that connects the fuel tank and the intake pipe side of the engine body, and a canister that adsorbs evaporative fuel gas is interposed in this fuel evaporative gas passage. During idling operation, evaporated fuel gas is adsorbed by the activated carbon in the canister, and when the engine is accelerating other than when the engine is idling, the evaporated fuel gas adsorbed by the activated carbon in the canister is purged, and this purge evaporates. In the fuel evaporative gas leak prevention device in which fuel gas is supplied into the intake pipe, a duty control valve for opening and closing the purge fuel supply passage is interposed in the purge fuel supply passage between the canister and the intake pipe; When the engine body is stopped or idling, this duty control valve is kept closed, and when the engine body is accelerating other than when the engine body is idling, the opening operation time of the duty control valve is shortened from the reference time to control the vehicle. 1. A fuel evaporative gas leakage prevention device comprising: a control unit that performs duty control to delay an increase in the flow rate of purge fuel guided from the canister to the intake pipe side during acceleration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9534387U JPS643068U (en) | 1987-06-23 | 1987-06-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9534387U JPS643068U (en) | 1987-06-23 | 1987-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS643068U true JPS643068U (en) | 1989-01-10 |
Family
ID=31320006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9534387U Pending JPS643068U (en) | 1987-06-23 | 1987-06-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS643068U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01195961A (en) * | 1988-01-30 | 1989-08-07 | Mazda Motor Corp | Device for treating vapor fuel for engine |
-
1987
- 1987-06-23 JP JP9534387U patent/JPS643068U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01195961A (en) * | 1988-01-30 | 1989-08-07 | Mazda Motor Corp | Device for treating vapor fuel for engine |
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