JPH0176535U - - Google Patents
Info
- Publication number
- JPH0176535U JPH0176535U JP1987171984U JP17198487U JPH0176535U JP H0176535 U JPH0176535 U JP H0176535U JP 1987171984 U JP1987171984 U JP 1987171984U JP 17198487 U JP17198487 U JP 17198487U JP H0176535 U JPH0176535 U JP H0176535U
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- air
- fuel injection
- injection timing
- injector
- 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 19
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図はこの考案の構成を示す図。第２図は実
施例の全体概略構成図。第３図は燃焼室の横断面
図。第４図は燃焼室の縦断面図。第５図及び第６
図は制御回路の作動を説明するフローチヤート。
第７図は制御回路の作動を説明するタイミング図
。第８図は空燃比とＮＯｘ排出量との関係を示す
グラフ。第９図は第２実施例の燃料噴射ルーチン
を示すフローチヤート。第１０図は第２実施例の
作動を説明するタイミング図。
１６……燃焼室、２２ａ，２２ｂ……吸気ポー
ト、２４ａ，２４ｂ……排気ポート、２６ａ，２
６ｂ……吸気弁、２８ａ，２８ｂ……排気弁、３
０……点火栓、３４……インジエクタ、４４……
吸気制御弁、５０……制御回路、５２……クラン
ク角センサ、５７……リーンセンサ。
FIG. 1 is a diagram showing the configuration of this invention. FIG. 2 is an overall schematic configuration diagram of the embodiment. Figure 3 is a cross-sectional view of the combustion chamber. Figure 4 is a longitudinal sectional view of the combustion chamber. Figures 5 and 6
The figure is a flowchart explaining the operation of the control circuit.
FIG. 7 is a timing diagram illustrating the operation of the control circuit. FIG. 8 is a graph showing the relationship between air-fuel ratio and NOx emissions. FIG. 9 is a flowchart showing the fuel injection routine of the second embodiment. FIG. 10 is a timing diagram illustrating the operation of the second embodiment. 16... Combustion chamber, 22a, 22b... Intake port, 24a, 24b... Exhaust port, 26a, 2
6b...Intake valve, 28a, 28b...Exhaust valve, 3
0...Spark plug, 34...Injector, 44...
Intake control valve, 50...control circuit, 52...crank angle sensor, 57...lean sensor.
Claims (1)
気の成層のため衝突目標物に向けて柱状の噴霧を
形成するインジエクタと、空燃比検出手段と、内
燃機関の運転状態に応じて燃料噴射時期を算出す
る燃料噴射時期算出手段と、該燃料噴射時期算出
手段により算出される燃料噴射時期にインジエク
タが燃料噴射を行うようにインジエクタを駆動す
るインジエクタ駆動手段とから構成され、燃料噴
射時期算出手段が算出する燃料噴射時期は、混合
気が所定空燃比よりリツチな状態では吸気行程の
例えば後半時に噴射されるが、混合気が所定空燃
比よりリーンな状態となると、吸気行程での噴射
を停止し、吸気行程以外の行程で燃料噴射を実行
することを特徴とする内燃機関の燃料噴射制御装
置。 In a fuel-injected internal combustion engine, there is an injector that forms a columnar spray toward a collision target to stratify the air-fuel mixture in the combustion chamber, an air-fuel ratio detection means, and a fuel injection timing that calculates fuel injection timing according to the operating state of the internal combustion engine. and an injector drive means that drives the injector so that the injector injects fuel at the fuel injection timing calculated by the fuel injection timing calculation means. Regarding the fuel injection timing, when the air-fuel mixture is richer than a predetermined air-fuel ratio, fuel is injected, for example, in the latter half of the intake stroke, but when the air-fuel mixture becomes leaner than the predetermined air-fuel ratio, injection during the intake stroke is stopped and the fuel is injected during the intake stroke. A fuel injection control device for an internal combustion engine, characterized in that fuel injection is performed in a stroke other than a stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171984U JPH0176535U (en) | 1987-11-12 | 1987-11-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987171984U JPH0176535U (en) | 1987-11-12 | 1987-11-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0176535U true JPH0176535U (en) | 1989-05-24 |
Family
ID=31463981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987171984U Pending JPH0176535U (en) | 1987-11-12 | 1987-11-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0176535U (en) |
-
1987
- 1987-11-12 JP JP1987171984U patent/JPH0176535U/ja active Pending
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