JPS63198458U - - Google Patents
Info
- Publication number
- JPS63198458U JPS63198458U JP8963087U JP8963087U JPS63198458U JP S63198458 U JPS63198458 U JP S63198458U JP 8963087 U JP8963087 U JP 8963087U JP 8963087 U JP8963087 U JP 8963087U JP S63198458 U JPS63198458 U JP S63198458U
- Authority
- JP
- Japan
- Prior art keywords
- passage
- exhaust
- control valve
- exhaust gas
- recirculation
- 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
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図は本考案の第１実施例を示す構成図、第
２図は本考案に係るＥＧＲ制御装置の制御原理の
説明図、第３図Ａ〜Ｃ及び第４図Ａ〜Ｃはそれぞ
れ本考案の第１実施例の動作説明図、第５図は同
上実施例のＥＧＲ特性図、第６図は本考案の第２
実施例の要部構成図、第７図は同上第２実施例の
圧力調整弁の動作説明図、第８図は同上第２実施
例においてＥＧＲ通路内圧力に応じたＥＧＲ特性
図である。
１……機関本体、２……排気通路、３……吸気
通路、４……ＥＧＲ通路、５……ＥＧＲ制御弁、
６……圧力調整弁、７……バキユームポンプ、８
……負圧通路、１０……コントロールバルブ、１
１……水温スイツチ、１２……コントロールレバ
ーセンサ、１３……回転数センサ、１４……コン
トロールユニツト。
FIG. 1 is a configuration diagram showing the first embodiment of the present invention, FIG. 2 is an explanatory diagram of the control principle of the EGR control device according to the present invention, and FIGS. An explanatory diagram of the operation of the first embodiment of the invention, FIG. 5 is an EGR characteristic diagram of the same embodiment, and FIG. 6 is an illustration of the second embodiment of the invention.
FIG. 7 is an explanatory diagram of the operation of the pressure regulating valve of the second embodiment, and FIG. 8 is an EGR characteristic diagram according to the EGR passage pressure in the second embodiment. 1... Engine body, 2... Exhaust passage, 3... Intake passage, 4... EGR passage, 5... EGR control valve,
6...Pressure regulating valve, 7...Vacuum pump, 8
... Negative pressure passage, 10 ... Control valve, 1
1... Water temperature switch, 12... Control lever sensor, 13... Rotation speed sensor, 14... Control unit.
Claims (1)
排気通路から分岐し前記機関本体に接続する吸気
通路に合流する排気還流通路と、該排気還流通路
に介装される排気還流制御弁と、該排気還流制御
弁と前記吸気通路合流部との間の排気還流通路内
の圧力を検知し当該圧力を所定値にすべく前記排
気還流制御弁の開度を制御する排気還流制御弁制
御手段と、前記排気還流通路合流部より上流側の
吸気通路に設けられ機関運転条件に応じて通路開
口面積を可変する通路開口面積制御手段とを備え
て構成したことを特徴とするデイーゼル機関の排
気還流制御装置。 In a diesel engine, an exhaust recirculation passage branches from an exhaust passage connected to an engine main body and joins an intake passage connected to the engine main body, an exhaust recirculation control valve interposed in the exhaust recirculation passage, and the exhaust recirculation control valve. and an exhaust recirculation control valve control means for detecting pressure in an exhaust gas recirculation passage between the exhaust gas recirculation passage and the intake passage merging portion and controlling an opening degree of the exhaust gas recirculation control valve to bring the pressure to a predetermined value; 1. An exhaust gas recirculation control device for a diesel engine, comprising passage opening area control means that is provided in an intake passage upstream of a merging part and changes the passage opening area according to engine operating conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8963087U JPS63198458U (en) | 1987-06-12 | 1987-06-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8963087U JPS63198458U (en) | 1987-06-12 | 1987-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63198458U true JPS63198458U (en) | 1988-12-21 |
Family
ID=30948783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8963087U Pending JPS63198458U (en) | 1987-06-12 | 1987-06-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63198458U (en) |
-
1987
- 1987-06-12 JP JP8963087U patent/JPS63198458U/ja active Pending