JPH0417152U - - Google Patents
Info
- Publication number
- JPH0417152U JPH0417152U JP5801890U JP5801890U JPH0417152U JP H0417152 U JPH0417152 U JP H0417152U JP 5801890 U JP5801890 U JP 5801890U JP 5801890 U JP5801890 U JP 5801890U JP H0417152 U JPH0417152 U JP H0417152U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- negative pressure
- opens
- throttle valve
- closes
- 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 2
- 238000011144 upstream manufacturing Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Means For Warming Up And Starting Carburetors (AREA)
Description
図面は本考案の一実施例を示し、第１図はエン
ジンの要部断面図、第２図は冷態時のスロツトル
開度と空燃比との関係を示すθ−Ａ／Ｆ線図であ
る。
３……吸気通路、５……チヨークバルブ、７…
…スロツトルバルブ、８……負圧ポート、９……
大気通路、１１……サーモバルブ、１４……負圧
応動バルブ、１６……圧力動作室、１８……圧力
ポート。
The drawings show one embodiment of the present invention, and Fig. 1 is a sectional view of the main parts of the engine, and Fig. 2 is a θ-A/F diagram showing the relationship between throttle opening and air-fuel ratio in a cold state. . 3...Intake passage, 5...Chiyoke valve, 7...
...Throttle valve, 8...Negative pressure port, 9...
Atmospheric passage, 11...Thermo valve, 14...Negative pressure responsive valve, 16...Pressure operation chamber, 18...Pressure port.
Claims (1)
とを介装するエンジンにおいて、 上記吸気通路のスロツトルバルブ下流に開口す
る負圧ポートを大気に連通する大気通路に連通し
、 上記大気通路に、設定冷態上限温度以上で閉弁
し設定冷態上限温度以下で開弁するサーモバルブ
を介装し、 上記サーモバルブと負圧ポートとの間の上記大
気通路に、該大気通路を開閉する負圧応動バルブ
を設け、 上記負圧応動バルブの圧力動作室を、閉弁時の
スロツトルバルブの上流方向へ開弁自在な自由端
の直上流に開口する圧力ポートに連通した ことを特徴とするエンジンの空燃比補正装置。[Scope of Claim for Utility Model Registration] In an engine in which a choke valve and a throttle valve are interposed in the intake passage, a negative pressure port opening downstream of the throttle valve in the intake passage is connected to an atmospheric passage communicating with the atmosphere, The atmospheric passage is provided with a thermovalve that closes at a temperature higher than or equal to the set upper limit cold temperature and opens at or below the set upper limit cooled temperature; A negative pressure responsive valve that opens and closes is provided, and the pressure operating chamber of the negative pressure responsive valve is communicated with a pressure port that opens immediately upstream of a free end that can be freely opened in the upstream direction of the throttle valve when the valve is closed. An engine air-fuel ratio correction device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5801890U JPH0417152U (en) | 1990-06-01 | 1990-06-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5801890U JPH0417152U (en) | 1990-06-01 | 1990-06-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0417152U true JPH0417152U (en) | 1992-02-13 |
Family
ID=31583250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5801890U Pending JPH0417152U (en) | 1990-06-01 | 1990-06-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0417152U (en) |
-
1990
- 1990-06-01 JP JP5801890U patent/JPH0417152U/ja active Pending
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