JPS6173038U - - Google Patents
Info
- Publication number
- JPS6173038U JPS6173038U JP15826584U JP15826584U JPS6173038U JP S6173038 U JPS6173038 U JP S6173038U JP 15826584 U JP15826584 U JP 15826584U JP 15826584 U JP15826584 U JP 15826584U JP S6173038 U JPS6173038 U JP S6173038U
- Authority
- JP
- Japan
- Prior art keywords
- opening
- exhaust recirculation
- control valve
- throttle valve
- intake throttle
- 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
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
図面は本考案の実施例を示すもので、第１図は
デイーゼルエンジンの排気還流装置の全体構成図
、第２図はコントロールユニツトの処理の流れを
示す流れ図、第３図はアクセル開度の変化に伴う
吸気絞弁の開閉状態を示す図である。
１……吸気通路、４……第１排気還流通路、５
……第２排気還流通路、４ａ，５ａ……吸気側開
口部、６……第１排気還流制御弁、７……第２排
気還流制御弁、８……吸気絞弁、１５……燃料噴
射ポンプ、１６……ポジシヨンセンサ、１７……
回転数センサ、１８……コントロールユニツト。
The drawings show an embodiment of the present invention; Fig. 1 is an overall configuration diagram of an exhaust gas recirculation system for a diesel engine, Fig. 2 is a flow chart showing the processing flow of the control unit, and Fig. 3 is a diagram showing changes in accelerator opening. FIG. 3 is a diagram illustrating the opening and closing states of the intake throttle valve. 1... Intake passage, 4... First exhaust recirculation passage, 5
...Second exhaust recirculation passage, 4a, 5a...Intake side opening, 6...First exhaust recirculation control valve, 7...Second exhaust recirculation control valve, 8...Intake throttle valve, 15...Fuel injection Pump, 16...Position sensor, 17...
Rotation speed sensor, 18...control unit.
Claims (1)
開口部上流の吸気通路に吸気絞弁を設け、少なく
ともアクセルペダル開度に関連する信号に基づい
て前記排気還流制御弁及び吸気絞弁を開閉制御し
て、排気還流を行うデイーゼルエンジンの排気還
流装置において、アクセルペダル開度に関連する
信号を検出するアクセル開度センサと、該アクセ
ル開度センサの出力信号に基づき、アクセルペダ
ル開度がアイドル開度を含む所定開度以下の極低
負荷域で排気還流制御弁を開、吸気絞弁を開とし
、前記所定開度を越える低負荷域で排気還流制御
弁を開、吸気絞弁を閉とし、中負荷域で排気還流
制御弁を開、吸気絞弁を開とし、さらに高負荷域
で排気還流制御弁を閉、吸気絞弁を開とする排気
還流制御手段とを具備することを特徴とするデイ
ーゼルエンジンの排気還流装置。 An intake throttle valve is provided in the intake passage upstream of the intake side opening of the exhaust recirculation passage provided with the exhaust recirculation control valve, and the opening/closing of the exhaust recirculation control valve and the intake throttle valve is controlled based on at least a signal related to the accelerator pedal opening. In the exhaust gas recirculation system of a diesel engine that performs exhaust gas recirculation, an accelerator opening sensor detects a signal related to the accelerator pedal opening, and the accelerator pedal opening is determined based on the output signal of the accelerator opening sensor. The exhaust recirculation control valve is opened and the intake throttle valve is opened in an extremely low load range below a predetermined opening including the degree of opening, and the exhaust recirculation control valve is opened and the intake throttle valve is closed in a low load range exceeding the predetermined opening. The exhaust recirculation control means opens the exhaust recirculation control valve and opens the intake throttle valve in a medium load range, and further closes the exhaust recirculation control valve and opens the intake throttle valve in a high load range. Diesel engine exhaust recirculation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984158265U JPH0338449Y2 (en) | 1984-10-18 | 1984-10-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984158265U JPH0338449Y2 (en) | 1984-10-18 | 1984-10-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6173038U true JPS6173038U (en) | 1986-05-17 |
| JPH0338449Y2 JPH0338449Y2 (en) | 1991-08-14 |
Family
ID=30716247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984158265U Expired JPH0338449Y2 (en) | 1984-10-18 | 1984-10-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0338449Y2 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS562453A (en) * | 1979-06-19 | 1981-01-12 | Diesel Kiki Co Ltd | Exhaust return controller for diesel engine |
| JPS5726252A (en) * | 1980-07-23 | 1982-02-12 | Nissan Motor Co Ltd | Exhaust gas recycling controller of diesel engine |
| JPS5744748A (en) * | 1980-08-29 | 1982-03-13 | Toyota Motor Corp | Controlling device of air-fuel ratio |
| JPS5823261A (en) * | 1981-08-04 | 1983-02-10 | Nissan Motor Co Ltd | Control device of exhaust gas recirculation in internal combustion engine |
| JPS5925108A (en) * | 1982-07-31 | 1984-02-09 | 昭和電線電纜株式会社 | Watertight wire |
-
1984
- 1984-10-18 JP JP1984158265U patent/JPH0338449Y2/ja not_active Expired
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS562453A (en) * | 1979-06-19 | 1981-01-12 | Diesel Kiki Co Ltd | Exhaust return controller for diesel engine |
| JPS5726252A (en) * | 1980-07-23 | 1982-02-12 | Nissan Motor Co Ltd | Exhaust gas recycling controller of diesel engine |
| JPS5744748A (en) * | 1980-08-29 | 1982-03-13 | Toyota Motor Corp | Controlling device of air-fuel ratio |
| JPS5823261A (en) * | 1981-08-04 | 1983-02-10 | Nissan Motor Co Ltd | Control device of exhaust gas recirculation in internal combustion engine |
| JPS5925108A (en) * | 1982-07-31 | 1984-02-09 | 昭和電線電纜株式会社 | Watertight wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0338449Y2 (en) | 1991-08-14 |
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