JPH03114551U - - Google Patents
Info
- Publication number
- JPH03114551U JPH03114551U JP2312690U JP2312690U JPH03114551U JP H03114551 U JPH03114551 U JP H03114551U JP 2312690 U JP2312690 U JP 2312690U JP 2312690 U JP2312690 U JP 2312690U JP H03114551 U JPH03114551 U JP H03114551U
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- internal combustion
- fuel injection
- controlled
- fuel 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 6
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は第１実施例の概略構成図。第２図はエ
アアシスト式の燃料インジエクタの噴口部分の概
略断面図。第３図、第４図、第５図は第１実施例
の作動を説明するフローチヤート。第６図は第２
実施例の概略構成図。第７図は第２実施例の燃料
噴射ルーチンのフローチヤート。第８図は第３実
施例の概略構成図。第９図は第３実施例における
アシストエアの導入源となる吸気ポート間の圧力
状態を説明する図。
１０……エンジン本体、１４……吸気マニホル
ド、１８……スロツトル弁、２０−１，２０−２
，２０−３，２０−４……インジエクタ、２２…
…触媒コンバータ、２６……三元触媒、２８……
酸化触媒、４０−１，４０−２，４０−３，４０
−４……吸気ポート、５２……アシストエア通路
、５４……エアポンプ、５５……開閉弁、７０…
…制御回路、７２……Ｏ２センサ。
FIG. 1 is a schematic configuration diagram of the first embodiment. FIG. 2 is a schematic cross-sectional view of the nozzle part of an air-assisted fuel injector. FIG. 3, FIG. 4, and FIG. 5 are flowcharts explaining the operation of the first embodiment. Figure 6 is the second
A schematic configuration diagram of an example. FIG. 7 is a flowchart of the fuel injection routine of the second embodiment. FIG. 8 is a schematic configuration diagram of the third embodiment. FIG. 9 is a diagram illustrating the pressure state between the intake ports that are the introduction sources of assist air in the third embodiment. 10...Engine body, 14...Intake manifold, 18...Throttle valve, 20-1, 20-2
, 20-3, 20-4...injector, 22...
...Catalytic converter, 26...Three-way catalyst, 28...
Oxidation catalyst, 40-1, 40-2, 40-3, 40
-4...Intake port, 52...Assist air passage, 54...Air pump, 55...Opening/closing valve, 70...
...Control circuit, 72... O2 sensor.
Claims (1)
を他の気筒よりリーンに制御したものにおいて、
リーンに制御される気筒の燃料インジエクタはエ
アアシスト型の燃料インジエクタであることを特
徴とする燃料噴射式多気筒内燃機関。 In multi-cylinder fuel injection internal combustion engines, some cylinders are controlled leaner than others.
A fuel injection multi-cylinder internal combustion engine characterized in that a lean-controlled fuel injector for a cylinder is an air-assisted fuel injector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2312690U JPH03114551U (en) | 1990-03-09 | 1990-03-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2312690U JPH03114551U (en) | 1990-03-09 | 1990-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03114551U true JPH03114551U (en) | 1991-11-25 |
Family
ID=31526123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2312690U Pending JPH03114551U (en) | 1990-03-09 | 1990-03-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03114551U (en) |
-
1990
- 1990-03-09 JP JP2312690U patent/JPH03114551U/ja active Pending