JPS5939749U - Fuel vapor evaporation prevention device for internal combustion engines - Google Patents
Fuel vapor evaporation prevention device for internal combustion enginesInfo
- Publication number
- JPS5939749U JPS5939749U JP13419182U JP13419182U JPS5939749U JP S5939749 U JPS5939749 U JP S5939749U JP 13419182 U JP13419182 U JP 13419182U JP 13419182 U JP13419182 U JP 13419182U JP S5939749 U JPS5939749 U JP S5939749U
- Authority
- JP
- Japan
- Prior art keywords
- fuel vapor
- internal combustion
- prevention device
- negative pressure
- evaporation prevention
- 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
Landscapes
- Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の内燃機関の燃料蒸気蒸散防止装置の構成
図、第２図は本考案装置の一実施例を示す構成図、第３
−は同上装置の要部の断面構成図、第４図は同上実施例
における機関吸入空気量とパージ流量との関係を示すグ
ラフである。
１・・・燃料タンク、４・・・キャニスタ、５・・・機
関、８・・・パージ制御弁、１２・・・パージ通路、１
３・・・吸気管、１４・・・サーマルバキュームバルブ
、１５・・・ＢＰＴバルブ、１７・・・負圧、希釈通路
、１８・・・排気管、２３・・・排気圧導入通路。FIG. 1 is a block diagram of a conventional fuel vapor evaporation prevention device for an internal combustion engine, FIG. 2 is a block diagram showing an embodiment of the device of the present invention, and FIG.
4 is a graph showing the relationship between the engine intake air amount and the purge flow rate in the above embodiment. DESCRIPTION OF SYMBOLS 1... Fuel tank, 4... Canister, 5... Engine, 8... Purge control valve, 12... Purge passage, 1
3... Intake pipe, 14... Thermal vacuum valve, 15... BPT valve, 17... Negative pressure, dilution passage, 18... Exhaust pipe, 23... Exhaust pressure introduction passage.
Claims (1)
填されたキャニスタに一時貯蔵し、機関運転時に前記キ
ャニスタから機関吸気系にパージ通路を介して前記燃料
蒸気を排出するようにした内燃機関の燃料蒸気蒸散防止
装置において、前記パージ通路に大気を導いてパージ通
路内の負圧を希釈する負圧希釈通路を設けるとともに、
機関又はこれに関連した温度が所定値以上であるときに
前記負圧希釈通路を閉成する制御手段と、排気圧−力が
所定値以上であるときに前記負圧希釈通路を閉成する制
御手段と、を設けて構成したことを特徴とする内燃機関
の燃料蒸気蒸散防止装置。An internal combustion engine in which fuel vapor generated in a fuel tank is temporarily stored in a canister filled with a fuel vapor adsorbent, and the fuel vapor is discharged from the canister to an engine intake system through a purge passage during engine operation. In the fuel vapor evaporation prevention device, a negative pressure dilution passage is provided for introducing atmospheric air into the purge passage to dilute the negative pressure in the purge passage, and
Control means for closing the negative pressure dilution passage when the temperature of the engine or related thereto is above a predetermined value, and control means for closing the negative pressure dilution passage when the exhaust pressure is above the predetermined value. A fuel vapor evaporation prevention device for an internal combustion engine, characterized in that it is configured by providing means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13419182U JPS5939749U (en) | 1982-09-06 | 1982-09-06 | Fuel vapor evaporation prevention device for internal combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13419182U JPS5939749U (en) | 1982-09-06 | 1982-09-06 | Fuel vapor evaporation prevention device for internal combustion engines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5939749U true JPS5939749U (en) | 1984-03-14 |
Family
ID=30302442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13419182U Pending JPS5939749U (en) | 1982-09-06 | 1982-09-06 | Fuel vapor evaporation prevention device for internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5939749U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5675257A (en) * | 1979-11-24 | 1981-06-22 | Toyota Motor Corp | Method of removing moisture in brake fluid |
-
1982
- 1982-09-06 JP JP13419182U patent/JPS5939749U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5675257A (en) * | 1979-11-24 | 1981-06-22 | Toyota Motor Corp | Method of removing moisture in brake fluid |
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