JPH0352368U - - Google Patents
Info
- Publication number
- JPH0352368U JPH0352368U JP11413189U JP11413189U JPH0352368U JP H0352368 U JPH0352368 U JP H0352368U JP 11413189 U JP11413189 U JP 11413189U JP 11413189 U JP11413189 U JP 11413189U JP H0352368 U JPH0352368 U JP H0352368U
- Authority
- JP
- Japan
- Prior art keywords
- passage
- switching valve
- air heater
- vehicle
- intake passage
- 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
- 238000001514 detection method Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 claims 1
- 239000000779 smoke Substances 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Description
第１図はこの考案の実施例を示す構成図、第２
図は同じくコントローラ内での制御動作を説明す
るフローチヤートである。
１……デイーゼルエンジン、２……吸気通路、
４……エアヒータ、５……ＥＧＲ通路、６……排
気通路、９……切換弁、１２……車速計、１３…
…アクセルペダルスイツチ、１４……コントロー
ラ。
Figure 1 is a configuration diagram showing an embodiment of this invention, Figure 2
The figure is also a flowchart illustrating control operations within the controller. 1... Diesel engine, 2... Intake passage,
4...Air heater, 5...EGR passage, 6...Exhaust passage, 9...Switching valve, 12...Vehicle speed meter, 13...
...Accelerator pedal switch, 14...controller.
Claims (1)
、吸気通路にエアヒータを介装すると共に、エア
ヒータ上流の吸気通路を排気通路に連通するＥＧ
Ｒ通路を設け、吸気通路とＥＧＲ通路の合流部に
これらの通路を選択的に開閉する切換弁を介装す
る一方、車速を検出する手段と、アクセルペダル
の踏込みを検出する手段と、これらの検出信号に
基づいて車両の減速時にのみ作動するようにエア
ヒータを、さらに減速状態からの再加速時にＥＧ
Ｒ通路を所定時間だけ開くように切換弁を制御す
るコントローラを設けたことを特徴とするデイー
ゼルエンジンの白煙防止装置。 In a diesel engine installed in a vehicle, an air heater is installed in the intake passage, and the EG connects the intake passage upstream of the air heater to the exhaust passage.
An R passage is provided, and a switching valve for selectively opening and closing these passages is interposed at the confluence of the intake passage and the EGR passage, and a means for detecting vehicle speed, a means for detecting depression of an accelerator pedal, and a switching valve for selectively opening and closing these passages are provided. Based on the detection signal, the air heater is activated only when the vehicle decelerates, and the EG is activated when the vehicle accelerates again from deceleration.
A white smoke prevention device for a diesel engine, comprising a controller that controls a switching valve to open an R passage for a predetermined period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11413189U JPH0352368U (en) | 1989-09-28 | 1989-09-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11413189U JPH0352368U (en) | 1989-09-28 | 1989-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0352368U true JPH0352368U (en) | 1991-05-21 |
Family
ID=31662516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11413189U Pending JPH0352368U (en) | 1989-09-28 | 1989-09-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0352368U (en) |
-
1989
- 1989-09-28 JP JP11413189U patent/JPH0352368U/ja active Pending
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