JPS6257751U - - Google Patents
Info
- Publication number
- JPS6257751U JPS6257751U JP15074985U JP15074985U JPS6257751U JP S6257751 U JPS6257751 U JP S6257751U JP 15074985 U JP15074985 U JP 15074985U JP 15074985 U JP15074985 U JP 15074985U JP S6257751 U JPS6257751 U JP S6257751U
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel ratio
- fuel
- engine
- control device
- 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 18
- 241000234435 Lilium Species 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
Landscapes
- Control Of The Air-Fuel Ratio Of Carburetors (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は本考案の実施例を示す構成図、第２図
は第１図の装置中の制御回路の構成を示すブロツ
ク図である。
主要部分の符号の説明、２……エアクリーナ、
３……気化器、５……絞り弁、６……ベンチユリ
、７……チヨーク弁、１０……スロー燃料通路、
１１……メインノズル、１２……メイン燃料通路
、１５……補助燃料通路、１６……補助燃料制御
弁、１７……吸気マニホールド、１８，５５……
負圧供給路、２０，５７……大気圧供給路、２２
，４０，５６……電磁弁、３７，５４……吸気２
次空気制御弁、４１……負圧制御部、５９……一
定負圧制御弁、７１……酸素濃度センサ。
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing the structure of a control circuit in the apparatus shown in FIG. Explanation of symbols of main parts, 2... Air cleaner,
3... Carburetor, 5... Throttle valve, 6... Bench lily, 7... Chiyoke valve, 10... Slow fuel passage,
11... Main nozzle, 12... Main fuel passage, 15... Auxiliary fuel passage, 16... Auxiliary fuel control valve, 17... Intake manifold, 18, 55...
Negative pressure supply path, 20, 57...Atmospheric pressure supply path, 22
, 40, 56... Solenoid valve, 37, 54... Intake 2
Next air control valve, 41... Negative pressure control section, 59... Constant negative pressure control valve, 71... Oxygen concentration sensor.
Claims (1)
ク弁を吸気系に備えた内燃エンジンにおける排気
成分濃度を検出し該検出結果に基づいて供給混合
気の空燃比を目標空燃比にフイードバツト制御し
、エンジンの運転状態が前記空燃比フイードバツ
ク制御停止条件を充足したとき該充足時点から所
定時間経過後に空燃比を前記目標空燃比よりリツ
チ化する空燃比制御装置であつて、気化器ベンチ
ユリ部に開口した燃料ノズルを介してエンジンへ
補助燃料を供給する補助燃料供給手段を含み、前
記チヨーク弁が閉弁作動するエンジン低温時にエ
ンジン回転数が所定回転数以上であるときには前
記補助燃料供給手段の作動を停止せしめることを
特徴とする空燃比制御装置。 Detecting the concentration of exhaust components in an internal combustion engine equipped with a choke valve in the intake system that changes its opening as the engine warms up, and feedback controlling the air-fuel ratio of the supplied air-fuel mixture to a target air-fuel ratio based on the detection result; An air-fuel ratio control device that makes the air-fuel ratio richer than the target air-fuel ratio after a predetermined period of time has elapsed from the time when the air-fuel ratio feedback control stop condition is satisfied in the operating state of the engine, the air-fuel ratio control device having an opening in a carburetor vent lily portion. The fuel supply means includes an auxiliary fuel supply means for supplying auxiliary fuel to the engine through a fuel nozzle, and the operation of the auxiliary fuel supply means is stopped when the engine speed is equal to or higher than a predetermined number of revolutions when the engine is at a low temperature and the choke valve closes. An air-fuel ratio control device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15074985U JPS6257751U (en) | 1985-09-30 | 1985-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15074985U JPS6257751U (en) | 1985-09-30 | 1985-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6257751U true JPS6257751U (en) | 1987-04-10 |
Family
ID=31067171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15074985U Pending JPS6257751U (en) | 1985-09-30 | 1985-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6257751U (en) |
-
1985
- 1985-09-30 JP JP15074985U patent/JPS6257751U/ja active Pending
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