JPH0246017U - - Google Patents
Info
- Publication number
- JPH0246017U JPH0246017U JP12400688U JP12400688U JPH0246017U JP H0246017 U JPH0246017 U JP H0246017U JP 12400688 U JP12400688 U JP 12400688U JP 12400688 U JP12400688 U JP 12400688U JP H0246017 U JPH0246017 U JP H0246017U
- Authority
- JP
- Japan
- Prior art keywords
- nitrogen oxide
- diesel engine
- ammonia gas
- detecting
- detection means
- 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
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 1
Landscapes
- Exhaust Gas After Treatment (AREA)
Description
第１図は本考案の実施例を示す構成図、第２図
は排気中の窒素酸化物の濃度変化を示す特性図で
ある。
１……デイーゼルエンジン、２……排気通路、
３……還元触媒、４，５……窒素酸化物濃度検出
手段、６……アンモニアガス供給手段、８……制
御手段、１１……吸入空気量検出手段、１２……
負荷回転数検出手段。
FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a characteristic diagram showing changes in concentration of nitrogen oxides in exhaust gas. 1... Diesel engine, 2... Exhaust passage,
3... Reduction catalyst, 4, 5... Nitrogen oxide concentration detection means, 6... Ammonia gas supply means, 8... Control means, 11... Intake air amount detection means, 12...
Load rotation speed detection means.
Claims (1)
濃度検出手段を設け、その下流に位置してアンモ
ニアガスの供給手段と窒素酸化物の還元触媒とを
設ける一方、前記濃度検出部位とアンモニアガス
供給部位との排気流の位相差を検出する手段を設
け、前記濃度検出手段と位相検出手段からの信号
に基づいてアンモニアガスの導入量を制御する制
御手段を備えたことを特徴とするデイーゼルエン
ジンの窒素酸化物除去装置。 A nitrogen oxide concentration detection means is provided in the exhaust passage of a diesel engine, and an ammonia gas supply means and a nitrogen oxide reduction catalyst are provided downstream of the nitrogen oxide concentration detection means. Nitrogen oxide for a diesel engine, characterized in that it is provided with a means for detecting a phase difference in exhaust flow, and a control means for controlling the amount of ammonia gas introduced based on signals from the concentration detecting means and the phase detecting means. removal device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12400688U JPH0246017U (en) | 1988-09-22 | 1988-09-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12400688U JPH0246017U (en) | 1988-09-22 | 1988-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0246017U true JPH0246017U (en) | 1990-03-29 |
Family
ID=31373367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12400688U Pending JPH0246017U (en) | 1988-09-22 | 1988-09-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0246017U (en) |
-
1988
- 1988-09-22 JP JP12400688U patent/JPH0246017U/ja active Pending