JPS6421236U - - Google Patents
Info
- Publication number
- JPS6421236U JPS6421236U JP11653087U JP11653087U JPS6421236U JP S6421236 U JPS6421236 U JP S6421236U JP 11653087 U JP11653087 U JP 11653087U JP 11653087 U JP11653087 U JP 11653087U JP S6421236 U JPS6421236 U JP S6421236U
- Authority
- JP
- Japan
- Prior art keywords
- air
- fuel ratio
- throttle valve
- state
- internal combustion
- 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 10
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１〜９図は本考案の一実施例としての内燃機
関の空燃比制御装置を示すもので、第１図はその
燃料噴射制御系を示すブロツク図、第２図はその
エンジンシステムを示す全体構成図、第３図はそ
の制御ブロツク図、第４，５図はいずれもその作
用を説明するためのフローチヤート、第６，７図
はいずれもその作用を説明するためのグラフ、第
８，９図はいずれもその変形例の作用を説明する
ためのグラフであり、第１０図は従来の内燃機関
の空燃比制御装置の作用を説明するためのグラフ
である。
１……燃焼室、２……吸気通路、３……排気通
路、４……吸気弁、５……排気弁、６……エアク
リーナ、７……スロツトル弁、８……電磁弁（イ
ンジエクタ）、９……触媒コンバータ、１０……
ＩＳＣモータ、１１……エアフローセンサ、１２
……吸気温センサ、１３……大気圧センサ、１４
……スロツトルセンサ、１５……アイドルスイツ
チ、１６……モータポジシヨンセンサ、１７……
酸素濃度センサとしてのＯ２センサ、１８……点
火プラグ、１９……水温センサ、２０……スター
タスイツチ、２１……クランク角センサ（エンジ
ン回転数センサ）、２２……ＴＤＣセンサ、２３
……電子制御ユニツト（ＥＣＵ）、２４……バツ
テリ、２５……バツテリセンサ、２６……イグニ
ツシヨンスイツチ（キースイツチ）、２７……Ｃ
ＰＵ、２８，２９……入力インタフエイス、３０
……Ａ／Ｄコンバータ、３１……ＲＯＭ、３２…
…ＲＡＭ、３３……バツテリバツクアツプＲＡＭ
（ＢＵＲＡＭ）、３４……インジエクタドライバ
、３５……基本駆動時間決定手段、３６……空燃
比補正手段、３７……Ｏ２センサフイードバツク
補正手段、３８，３９……スイツチング手段、４
０……冷却水温補正手段、４１……吸気温補正手
段、４２……大気圧補正手段、４３……加速増量
補正手段、４４……デツドタイム補正手段、４５
……ＷＯＴ運転開始時補正手段、４６……判定手
段、４７……制御手段、４８……スロツトル開度
変化検出手段、５０……デイストリビユータ、５
１……点火コイル、５２……点火時期制御用パワ
ートランジスタ、５３……点火ドライバ、Ｅ……
エンジン。
Figures 1 to 9 show an air-fuel ratio control device for an internal combustion engine as an embodiment of the present invention. Figure 1 is a block diagram showing its fuel injection control system, and Figure 2 is an overall diagram showing its engine system. FIG. 3 is a control block diagram, FIGS. 4 and 5 are flowcharts for explaining the operation, FIGS. 6 and 7 are graphs for explaining the operation, and FIGS. FIG. 9 is a graph for explaining the operation of the modified example, and FIG. 10 is a graph for explaining the operation of the conventional air-fuel ratio control device for an internal combustion engine. 1... Combustion chamber, 2... Intake passage, 3... Exhaust passage, 4... Intake valve, 5... Exhaust valve, 6... Air cleaner, 7... Throttle valve, 8... Solenoid valve (injector), 9...Catalytic converter, 10...
ISC motor, 11... Air flow sensor, 12
... Intake temperature sensor, 13 ... Atmospheric pressure sensor, 14
...Throttle sensor, 15...Idle switch, 16...Motor position sensor, 17...
O 2 sensor as an oxygen concentration sensor, 18... Spark plug, 19... Water temperature sensor, 20... Starter switch, 21... Crank angle sensor (engine speed sensor), 22... TDC sensor, 23
...Electronic control unit (ECU), 24...Battery, 25...Battery sensor, 26...Ignition switch (key switch), 27...C
PU, 28, 29...Input interface, 30
...A/D converter, 31...ROM, 32...
...RAM, 33...Battery backup RAM
(BURAM), 34... Injector driver, 35... Basic drive time determining means, 36... Air-fuel ratio correction means, 37... O2 sensor feedback correction means, 38, 39... Switching means, 4
0...Cooling water temperature correction means, 41...Intake temperature correction means, 42...Atmospheric pressure correction means, 43...Acceleration increase correction means, 44...Dead time correction means, 45
...WOT operation start correction means, 46...determination means, 47...control means, 48...throttle opening change detection means, 50...distributor, 5
1... Ignition coil, 52... Power transistor for ignition timing control, 53... Ignition driver, E...
engine.
Claims (1)
内燃機関の空燃比制御装置において、上記内燃機
関の吸気通路に介装されたスロツトル弁の開度を
検出するスロツトル開度検出手段と、同スロツト
ル開度検出手段の出力からスロツトル弁が全開付
近の状態になつたかどうかを判定する判定手段と
をそなえ、同判定手段により上記スロツトル弁が
全開付近の状態になつたことが判定されると、所
要時間かけて上記スロツトル弁の全開付近の状態
に適した空燃比よりもリーンな状態から徐々にリ
ツチ化して上記スロツトル弁の全開付近の状態に
適した空燃比にしてゆく制御手段が設けられたこ
とを特徴とする、内燃機関の空燃比制御装置。 An air-fuel ratio control device for an internal combustion engine that controls an air-fuel ratio according to the operating state of the internal combustion engine, comprising: a throttle opening detection means for detecting the opening of a throttle valve installed in an intake passage of the internal combustion engine; and a determining means for determining whether the throttle valve has reached a state near full open based on the output of the opening detection means, and when the determining means determines that the throttle valve has reached a state near full open, the required A control means is provided that gradually enriches the air-fuel ratio over time from a state leaner than the air-fuel ratio suitable for the state near the fully open state of the throttle valve to reach the air-fuel ratio suitable for the state near the fully open state of the throttle valve. An air-fuel ratio control device for an internal combustion engine, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11653087U JPS6421236U (en) | 1987-07-29 | 1987-07-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11653087U JPS6421236U (en) | 1987-07-29 | 1987-07-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6421236U true JPS6421236U (en) | 1989-02-02 |
Family
ID=31359147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11653087U Pending JPS6421236U (en) | 1987-07-29 | 1987-07-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6421236U (en) |
-
1987
- 1987-07-29 JP JP11653087U patent/JPS6421236U/ja active Pending
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