JPH0438559U - - Google Patents
Info
- Publication number
- JPH0438559U JPH0438559U JP7980890U JP7980890U JPH0438559U JP H0438559 U JPH0438559 U JP H0438559U JP 7980890 U JP7980890 U JP 7980890U JP 7980890 U JP7980890 U JP 7980890U JP H0438559 U JPH0438559 U JP H0438559U
- Authority
- JP
- Japan
- Prior art keywords
- side electrode
- zirconia tube
- engine exhaust
- ground
- electrode
- 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
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 10
- 238000002955 isolation Methods 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 2
- 239000004020 conductor Substances 0.000 claims 2
- 239000007789 gas Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 239000011241 protective layer Substances 0.000 description 1
Landscapes
- Measuring Oxygen Concentration In Cells (AREA)
Description
第１図は本考案の一実施例を示すセンサ部断面
図、第２図は同上実施例に係る酸素センサ部分断
面図、第３図は同上実施例に係るアイソレーシヨ
ンブツシユの斜視図、第４図は同上実施例に係る
アイソレーシヨンブツシユの断面図、第５図は同
上実施例に係るコンタクトプレートの斜視図、第
６図は同上実施例に係るコンタクトチユーブの断
面図、第７図は従来例を示すセンサ全体断面図、
第８図は第７図におけるセンサ部断面図である。
１……ホルダー、２……ジルコニアチユーブ、
６……アイソレーシヨンブツシユ、１１……内側
電極（出力取出用電極）、１２……外側電極（接
地側電極）、２３……保護層、３３，３４……Ｐ
ｔペースト、４１……コンタクトプレート。
FIG. 1 is a sectional view of a sensor section showing an embodiment of the present invention, FIG. 2 is a partial sectional view of an oxygen sensor according to the same embodiment, FIG. 3 is a perspective view of an isolation bushing according to the above embodiment, and FIG. 4 is a sectional view of the isolation bush according to the above embodiment, FIG. 5 is a perspective view of the contact plate according to the above embodiment, FIG. 6 is a sectional view of the contact tube according to the above embodiment, and FIG. 7 is a sectional view of the contact tube according to the above embodiment. Overall cross-sectional view of a sensor showing a conventional example,
FIG. 8 is a sectional view of the sensor section in FIG. 7. 1... Holder, 2... Zirconia tube,
6...Isolation button, 11...Inner electrode (output extraction electrode), 12...Outer electrode (ground side electrode), 23...Protective layer, 33, 34...P
t paste, 41...contact plate.
Claims (1)
表面の一部にそれぞれ電極を形成し、機関排気に
接触させた外表面の接地側電極と大気に接触させ
た内表面の出力取出側電極との間に発生する起電
力により機関排気中の酸素濃度を検出するように
構成され、前記ジルコニアチユーブの基端部がア
イソレーシヨンブツシユに押圧されて機関の排気
管壁に螺合されるホルダーの先端部に係止される
内燃機関用酸素センサにおいて、 接地側電極をジルコニアチユーブの基端部まで
延設すると共に、アイソレーシヨンブツシユの両
端面と両端面間を結ぶ周面の一部とに導電材料を
塗布して他部との絶縁を保持しつつ電気的に導通
させる導電通路を形成し、前記接地側電極を前記
導電通路を介してのみ接地させたことを特徴とす
る内燃機関用酸素センサ。[Claim for Utility Model Registration] Electrodes are formed on a part of the inner and outer surfaces of the zirconia tube whose tip is closed, and the ground side electrode is on the outer surface that is in contact with the engine exhaust and the ground side electrode is on the inner surface that is in contact with the atmosphere. The structure is configured to detect the oxygen concentration in the engine exhaust gas by the electromotive force generated between the zirconia tube and the output extraction side electrode, and the base end of the zirconia tube is pressed against the isolation bush and screwed into the engine exhaust pipe wall. In an internal combustion engine oxygen sensor that is fixed to the tip of the holder, the ground electrode is extended to the base end of the zirconia tube, and the ground electrode is connected to both end faces of the isolation bush and the circumferential surface connecting the two end faces. A conductive material is applied to a part of the conductive material to form a conductive path that maintains insulation from other parts while providing electrical continuity, and the grounding side electrode is grounded only through the conductive path. Oxygen sensor for internal combustion engines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7980890U JPH0438559U (en) | 1990-07-30 | 1990-07-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7980890U JPH0438559U (en) | 1990-07-30 | 1990-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0438559U true JPH0438559U (en) | 1992-03-31 |
Family
ID=31624304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7980890U Pending JPH0438559U (en) | 1990-07-30 | 1990-07-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0438559U (en) |
-
1990
- 1990-07-30 JP JP7980890U patent/JPH0438559U/ja active Pending
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