JPH0378958U - - Google Patents
Info
- Publication number
- JPH0378958U JPH0378958U JP13991489U JP13991489U JPH0378958U JP H0378958 U JPH0378958 U JP H0378958U JP 13991489 U JP13991489 U JP 13991489U JP 13991489 U JP13991489 U JP 13991489U JP H0378958 U JPH0378958 U JP H0378958U
- Authority
- JP
- Japan
- Prior art keywords
- internal combustion
- combustion engine
- large amount
- stroke internal
- fuel vapor
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000010926 purge Methods 0.000 description 4
- 239000003610 charcoal Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は、空燃比制御装置及び蒸発燃料放出装
置を有する２サイクル内燃機関の模式図、第２図
は第１図の内燃機関のバルブタイミング線図、第
３図は第１実施例によるパージ制御ルーチン１の
フローチヤート、第４図は負荷−回転速度線図上
のパージ禁止領域を示すマツプ、第５図は第２実
施例によるパージ制御ルーチン２のフローチヤー
トを示す。
１……２サイクル内燃機関、４……燃料噴射弁
、１２……Ｏ２センサ、２０……チヤコールキヤ
ニスタ、２９……パージコントロールバルブ、４
０……電子制御ユニツト（ＥＣＵ）。
Fig. 1 is a schematic diagram of a two-stroke internal combustion engine having an air-fuel ratio control device and an evaporative fuel release device, Fig. 2 is a valve timing diagram of the internal combustion engine of Fig. 1, and Fig. 3 is a purge diagram according to the first embodiment. FIG. 4 is a flowchart of control routine 1; FIG. 4 is a map showing the purge prohibited area on the load-rotational speed diagram; and FIG. 5 is a flowchart of purge control routine 2 according to the second embodiment. 1... Two-cycle internal combustion engine, 4... Fuel injection valve, 12... O2 sensor, 20... Charcoal canister, 29... Purge control valve, 4
0...Electronic control unit (ECU).
Claims (1)
する２サイクル内燃機関において、 燃焼室から排気系への空気の吹き抜けが多いか
否かを判断する手段と、空気の吹き抜けが多いと
判断された時には、蒸発燃料の放出を禁止する手
段を有することを特徴とする２サイクル内燃機関
の蒸発燃料放出装置。[Scope of Claim for Utility Model Registration] In a two-stroke internal combustion engine having a means for discharging evaporated fuel into the engine intake passage, a means for determining whether or not there is a large amount of air blowing through from the combustion chamber to the exhaust system; A fuel vapor release device for a two-stroke internal combustion engine, comprising means for prohibiting release of fuel vapor when it is determined that there is a large amount of blow-through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13991489U JPH0741883Y2 (en) | 1989-12-04 | 1989-12-04 | Evaporative fuel discharge device for two-cycle internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13991489U JPH0741883Y2 (en) | 1989-12-04 | 1989-12-04 | Evaporative fuel discharge device for two-cycle internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0378958U true JPH0378958U (en) | 1991-08-12 |
| JPH0741883Y2 JPH0741883Y2 (en) | 1995-09-27 |
Family
ID=31686930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13991489U Expired - Lifetime JPH0741883Y2 (en) | 1989-12-04 | 1989-12-04 | Evaporative fuel discharge device for two-cycle internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0741883Y2 (en) |
-
1989
- 1989-12-04 JP JP13991489U patent/JPH0741883Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0741883Y2 (en) | 1995-09-27 |
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