JPS62167154U - - Google Patents
Info
- Publication number
- JPS62167154U JPS62167154U JP5496086U JP5496086U JPS62167154U JP S62167154 U JPS62167154 U JP S62167154U JP 5496086 U JP5496086 U JP 5496086U JP 5496086 U JP5496086 U JP 5496086U JP S62167154 U JPS62167154 U JP S62167154U
- Authority
- JP
- Japan
- Prior art keywords
- light
- emitting element
- light emitting
- light guide
- combustion 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 5
- 239000004065 semiconductor Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 3
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
第１図ないし第４図は本考案の実施例を示し、
第１図は実施例のスモーク濃度検出装置全体の構
成を表わす断面図、第２図はその検出装置に取付
けられたビーム径拡大手段としての２枚の凸レン
ズの配置状態を説明する説明図、第３図はスモー
ク濃度検出装置の他の例を表わす断面図、第４図
はビーム径拡大手段の他の例を表わす説明図、で
ある。
１……スモーク濃度検出装置、２……排気管、
２４，２６……光源体、４２……半導体レーザ、
４４，４６……凸レンズ（ビーム径拡大手段）、
５０……フオトトランジスタ（受光素子）。
1 to 4 show embodiments of the present invention,
FIG. 1 is a cross-sectional view showing the overall structure of the smoke density detection device of the embodiment, FIG. FIG. 3 is a sectional view showing another example of the smoke concentration detection device, and FIG. 4 is an explanatory view showing another example of the beam diameter enlarging means. 1...Smoke concentration detection device, 2...Exhaust pipe,
24, 26... Light source body, 42... Semiconductor laser,
44, 46...Convex lens (beam diameter enlarging means),
50...Phototransistor (light receiving element).
Claims (1)
燃機関の排気中に導く第１の光導体と、該第１の
光導体より放射され、排気中を通過した透過光を
外部に導く第２の光導体と、該第２の光導体で導
かれた透過光を受光して電気信号として出力する
受光素子と、を備えた内燃機関のスモーク濃度検
出装置において、 上記発光素子としてレーザ光を発光する半導体
レーザを用い、該発光素子と上記第１の光導体と
の間に、発光素子から照射されるレーザ光のビー
ム径を拡大するビーム径拡大手段を設けたこと、 を特徴とする内燃機関のスモーク濃度検出装置。[Claims for Utility Model Registration] A light emitting element, a first light guide that guides light emitted from the light emitting element into the exhaust gas of an internal combustion engine, and a light emitting element emitted from the first light guide and passing through the exhaust gas. A smoke concentration detection device for an internal combustion engine, comprising a second light guide that guides transmitted light to the outside, and a light receiving element that receives the transmitted light guided by the second light guide and outputs it as an electric signal, A semiconductor laser that emits laser light is used as the light emitting element, and a beam diameter enlarging means for enlarging the beam diameter of the laser light emitted from the light emitting element is provided between the light emitting element and the first light guide. A smoke concentration detection device for an internal combustion engine, characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5496086U JPS62167154U (en) | 1986-04-11 | 1986-04-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5496086U JPS62167154U (en) | 1986-04-11 | 1986-04-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62167154U true JPS62167154U (en) | 1987-10-23 |
Family
ID=30882429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5496086U Pending JPS62167154U (en) | 1986-04-11 | 1986-04-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62167154U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0348138A (en) * | 1989-04-14 | 1991-03-01 | Mitsubishi Heavy Ind Ltd | Apparatus for measuring food constituent |
-
1986
- 1986-04-11 JP JP5496086U patent/JPS62167154U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0348138A (en) * | 1989-04-14 | 1991-03-01 | Mitsubishi Heavy Ind Ltd | Apparatus for measuring food constituent |
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