JPH0219851U - - Google Patents
Info
- Publication number
- JPH0219851U JPH0219851U JP9774488U JP9774488U JPH0219851U JP H0219851 U JPH0219851 U JP H0219851U JP 9774488 U JP9774488 U JP 9774488U JP 9774488 U JP9774488 U JP 9774488U JP H0219851 U JPH0219851 U JP H0219851U
- Authority
- JP
- Japan
- Prior art keywords
- fuel ratio
- air
- engine
- water temperature
- detection means
- 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 14
- 238000001514 detection method Methods 0.000 claims 4
- 239000000498 cooling water Substances 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は、本考案のクレーム対応図、第２図は
本考案の実施例に係るエンジンの空燃比制御装置
の制御システム図、第３図および第４図は、同実
施例装置の制御動作を示す各フローチヤート、第
５図は、上記第４図のフローチヤートにおけるデ
イレイタイム設定動作を示すタイムチヤート、第
６図、第７図は、上記本考案の実施例に於けるエ
ンジン水温に応じた各デイレイタイムＴＬＲ・Ｔ
ＲＬのマツプ特性を示すグラフ、第８図は同デイ
レイタイムＴＬＲ、ＴＲＬを変更するとエンジン
空燃比が変化する理由を示す作用説明図である。
１……エンジン本体、２……エアフロメータ、
３……スロツトルチヤンバ、５……フユーエルイ
ンジエクタ、６……スロツトル弁、９……エンジ
ンコントロールユニツト、１０……排気管、１１
……３元触媒コンバータ、１０……Ｏ２センサ。
Fig. 1 is a complaint response diagram of the present invention, Fig. 2 is a control system diagram of an engine air-fuel ratio control device according to an embodiment of the present invention, and Figs. 3 and 4 are control operations of the same embodiment device. FIG. 5 is a time chart showing the daytime setting operation in the flowchart of FIG. Each day delay time TLR・T
FIG. 8, a graph showing the map characteristics of RL, is an action explanatory diagram showing the reason why the engine air-fuel ratio changes when the delay times TLR and TRL are changed. 1...Engine body, 2...Air flow meter,
3... Throttle chamber, 5... Fuel injector, 6... Throttle valve, 9... Engine control unit, 10... Exhaust pipe, 11
...Three-way catalytic converter, 10... O2 sensor.
Claims (1)
と、該空燃比検出手段の検出値を基に当該エンジ
ンの実空燃比が予め設定された所定の目標空燃比
になるように空燃比のフイードバツク制御を行な
う空燃比フイードバツク制御手段とを備えてなる
エンジンの空燃比制御装置において、エンジンの
冷却水温度を検出するエンジン水温検出手段と、
該エンジン水温検出手段によつて検出されたエン
ジンの冷却水温度が所定値以下の時には上記空燃
比フイードバツク制御手段のフイードバツク制御
値を通常の空燃比値よりもリーン側に可変制御す
るリーン化制御手段とを設けたことを特徴とする
エンジンの空燃比制御装置。 air-fuel ratio detection means for detecting the actual air-fuel ratio of the engine; and feedback control of the air-fuel ratio so that the actual air-fuel ratio of the engine becomes a predetermined target air-fuel ratio based on the detected value of the air-fuel ratio detection means. An engine air-fuel ratio control device comprising an air-fuel ratio feedback control means for performing the following: an engine water temperature detection means for detecting the engine cooling water temperature;
lean control means for variably controlling a feedback control value of the air-fuel ratio feedback control means to a leaner side than a normal air-fuel ratio value when the engine cooling water temperature detected by the engine water temperature detection means is below a predetermined value; An air-fuel ratio control device for an engine, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9774488U JPH0219851U (en) | 1988-07-22 | 1988-07-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9774488U JPH0219851U (en) | 1988-07-22 | 1988-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0219851U true JPH0219851U (en) | 1990-02-09 |
Family
ID=31323419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9774488U Pending JPH0219851U (en) | 1988-07-22 | 1988-07-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0219851U (en) |
-
1988
- 1988-07-22 JP JP9774488U patent/JPH0219851U/ja active Pending