JPS6390157U

JPS6390157U -

Info

Publication number: JPS6390157U
Application number: JP18555286U
Authority: JP
Priority date: 1986-12-03
Filing date: 1986-12-03
Publication date: 1988-06-11

Description

[Brief explanation of the drawing]

第１図は本考案に係る第１実施例の斜視図、第
２図は同上の断面図、第３図は同上の作用説明図
、第４図は同上の第２実施例の斜視図、第５図は
同上の断面図、第６図は同上の作用説明図、第７
図は従来の内燃機関の酸素センサの使用説明図、
第８図は同上の酸素センサの斜視図、第９図は同
上の製造工程説明図、第１０図は同上の断面図、
第１１図は同上の取付自由度説明図、第１２図は
同上の応答速度特性図である。１……酸素センサ、２……排気通路、６……内
側電極、７……外側電極、８……固体電解質。 FIG. 1 is a perspective view of the first embodiment of the present invention, FIG. 2 is a sectional view of the same, FIG. 3 is an explanatory diagram of the operation of the same, and FIG. Figure 5 is a cross-sectional view of the same as above, Figure 6 is an explanatory diagram of the same as above, and Figure 7 is a cross-sectional view of the same as above.
The figure is an explanatory diagram of the use of a conventional internal combustion engine oxygen sensor.
FIG. 8 is a perspective view of the oxygen sensor same as above, FIG. 9 is a manufacturing process explanatory diagram of same as above, FIG. 10 is a sectional view of same as above,
FIG. 11 is an explanatory diagram of the degree of freedom of attachment of the same as above, and FIG. 12 is a diagram of response speed characteristics of the same as above. 1...Oxygen sensor, 2...Exhaust passage, 6...Inner electrode, 7...Outer electrode, 8...Solid electrolyte.

Claims

[Scope of utility model registration request]

It is a plate-shaped oxygen sensor that protrudes into the exhaust passage of an internal combustion engine and extends in the intrusion direction, with an outer electrode disposed at a part that comes into contact with the exhaust gas and an inner electrode disposed at a part that does not come into contact with the exhaust gas. In an oxygen sensor for an internal combustion engine, an oxygen ion conductive solid electrolyte is interposed between the electrode and the oxygen concentration on the outer electrode side is detected based on the difference in oxygen concentration between the gas that contacts the inner and outer electrodes.
A front external electrode is provided on at least one of the plunge end face of the oxygen sensor or the entire circumference of the outer peripheral surface at a predetermined distance from the plunge end face, so that the contact time of the exhaust flow with the outside electrode is made substantially uniform. Oxygen sensor for internal combustion engines.