JPH0411238U - - Google Patents
Info
- Publication number
- JPH0411238U JPH0411238U JP5174590U JP5174590U JPH0411238U JP H0411238 U JPH0411238 U JP H0411238U JP 5174590 U JP5174590 U JP 5174590U JP 5174590 U JP5174590 U JP 5174590U JP H0411238 U JPH0411238 U JP H0411238U
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- air
- fuel ratio
- gas recirculation
- engine
- 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.)
- Granted
Links
- 239000000446 fuel Substances 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
第１図は発明の構成図、第２図は火花点火式２
サイクル内燃機関の全体図、第３図はＥＧＲガス
供給領域を示す線図、第４図及び第５図は冷却さ
れたＥＧＲガスが再循環している場合におけるＥ
ＧＲ導管内のガス温の夫々下限値及び上限値を示
す線図、第６図はＥＧＲ装置の故障発生時におけ
る空燃比制御のフローチヤート、第７図は基本燃
料噴射時間のマツプ、第８図は燃料噴射時間の補
正係数のマツプ、第９図は本考案の別の実施例を
示す火花点火式２サイクル内燃機関の全体図、第
１０図は別の実施例におけるＥＧＲ装置の故障発
生時における空燃比制御のフローチヤートである
。
Ａ……給気通路、Ｂ……排気通路、Ｃ……排気
ガス再循環通路、Ｄ……排気ガス再循環制御弁。
Figure 1 is a configuration diagram of the invention, Figure 2 is a spark ignition type 2
An overall diagram of a cycle internal combustion engine, Figure 3 is a diagram showing the EGR gas supply area, Figures 4 and 5 are E when cooled EGR gas is recirculated.
A diagram showing the lower limit and upper limit of the gas temperature in the GR conduit, Figure 6 is a flowchart of air-fuel ratio control when a failure occurs in the EGR system, Figure 7 is a map of basic fuel injection time, Figure 8 9 is a map of the fuel injection time correction coefficient, FIG. 9 is an overall view of a spark ignition two-stroke internal combustion engine showing another embodiment of the present invention, and FIG. 10 is a diagram of another embodiment when a failure occurs in the EGR system. This is a flowchart of air-fuel ratio control. A...Air supply passage, B...Exhaust passage, C...Exhaust gas recirculation passage, D...Exhaust gas recirculation control valve.
Claims (1)
ガス再循環通路内に排気ガス再循環制御弁を設け
、予め定められた機関運転状態のときに排気ガス
を給気通路内に再循環させるようにした火花点火
式内燃機関において、上記予め定められた機関運
転状態のときに冷却された排気ガスが上記排気ガ
ス再循環通路内を流通しているか否かを検出する
検出手段と、上記予め定められた機関運転状態の
ときに冷却された排気ガスが上記排気ガス再循環
通路内を流通していないことが上記検出手段によ
り検出されたときに、空燃比が理論空燃比よりも
リツチ側のときには空燃比を更にリツチ側にし、
一方空燃比が理論空燃比よりもリーン側のときに
は空燃比を更にリーン側にするように制御する制
御手段とを具備する火花点火式内燃機関の排気ガ
ス再循環装置。 An exhaust gas recirculation control valve is provided in an exhaust gas recirculation passage that connects an engine air supply passage and an engine exhaust passage, so that exhaust gas is recirculated into the air supply passage during predetermined engine operating conditions. In the spark ignition internal combustion engine according to the present invention, a detecting means for detecting whether or not cooled exhaust gas is flowing in the exhaust gas recirculation passage during the predetermined engine operating state; When the detection means detects that the cooled exhaust gas is not flowing through the exhaust gas recirculation passage when the engine is in the stoichiometric operating state, the air-fuel ratio is richer than the stoichiometric air-fuel ratio. Make the air-fuel ratio even richer,
1. An exhaust gas recirculation device for a spark ignition internal combustion engine, comprising: control means for controlling the air-fuel ratio to be further leaner when the air-fuel ratio is leaner than the stoichiometric air-fuel ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5174590U JP2508632Y2 (en) | 1990-05-19 | 1990-05-19 | Exhaust gas recirculation system for spark ignition type internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5174590U JP2508632Y2 (en) | 1990-05-19 | 1990-05-19 | Exhaust gas recirculation system for spark ignition type internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0411238U true JPH0411238U (en) | 1992-01-30 |
| JP2508632Y2 JP2508632Y2 (en) | 1996-08-28 |
Family
ID=31571446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5174590U Expired - Lifetime JP2508632Y2 (en) | 1990-05-19 | 1990-05-19 | Exhaust gas recirculation system for spark ignition type internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2508632Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007100524A (en) * | 2005-09-30 | 2007-04-19 | Honda Motor Co Ltd | Control device for internal combustion engine |
-
1990
- 1990-05-19 JP JP5174590U patent/JP2508632Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007100524A (en) * | 2005-09-30 | 2007-04-19 | Honda Motor Co Ltd | Control device for internal combustion engine |
| JP4505398B2 (en) * | 2005-09-30 | 2010-07-21 | 本田技研工業株式会社 | Control device for internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2508632Y2 (en) | 1996-08-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |