JPS60168060U

JPS60168060U - Oxygen concentration measuring device

Info

Publication number: JPS60168060U
Application number: JP5464184U
Authority: JP
Inventors: 剛北原
Original assignee: 日産自動車株式会社
Priority date: 1984-04-13
Filing date: 1984-04-13
Publication date: 1985-11-07

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は酸素センサの断面図、第２，３図は先願の空燃
比制御装置を示す図であり、第２図はその回路構成図、
第３図はそのＩｐ−Ａ／Ｆ特性を示す図、第４図は本考
案の全体構成図、第５〜８図は本考案の第１実施例を示
す図であり、第５図はその酸素センサの分解斜視図、第
６図はその酸素センサの断面図、第７図はその回路構成
図、第８図はそのＶｎ−Ａ／Ｆ特性を示す図、第９図は
本考案の第２実施例を示すその酸素センサの断面図であ
る。６３．９２・・・・・・第１　ｍ素センサ、６６．９５
・・・・・・第２酸素センサ、７１・・・・・・第１電
流値検出手段、７２・・・・・・第２電流値検出手段、
７３・・・・・・酸素濃度検出手段。 −第２図１　　　１　　１２＋１　　　　；１ −″　　□１ ↓　　１１１＃　　　　　　ｌ１１．　　　　。２６Figure 1 is a sectional view of the oxygen sensor, Figures 2 and 3 are diagrams showing the air-fuel ratio control device of the prior application, and Figure 2 is its circuit configuration diagram.
FIG. 3 is a diagram showing its Ip-A/F characteristics, FIG. 4 is an overall configuration diagram of the present invention, and FIGS. 5 to 8 are diagrams showing the first embodiment of the present invention. FIG. 6 is an exploded perspective view of the oxygen sensor, FIG. 6 is a sectional view of the oxygen sensor, FIG. 7 is a circuit diagram thereof, FIG. 8 is a diagram showing its Vn-A/F characteristics, and FIG. 9 is a diagram of the present invention. FIG. 2 is a cross-sectional view of the oxygen sensor showing a second embodiment. 63.92...1st m element sensor, 66.95
. . . second oxygen sensor, 71 . . . first current value detection means, 72 . . . second current value detection means,
73...Oxygen concentration detection means. -Figure 2 1 1 12+1 ;1 -'' □1 ↓ 111 #l11..26

Claims

[Scope of utility model registration request]

A reference electrode in contact with a reference gas having a constant acid blue concentration and a measurement electrode in contact with the first oxygen layer are placed between the oxygen ion conductive solid electrolyte, and a voltage is applied according to the oxygen partial pressure ratio between the two electrodes. a first sensor unit that outputs an output, and a first sensor unit that covers the measurement electrode and defines a first oxygen layer around the measurement electrode and limits the amount of diffusion of oxygen molecules between the first oxygen layer and the gas to be measured. A first device that determines the oxygen partial pressure of the first oxygen layer according to the value of the injected current supplied between the oxygen layer decoy member and the pump electrode.
A first oxygen sensor having a pump part, a reference electrode in contact with a reference gas having a constant oxygen concentration, and a measurement electrode in contact with a second oxygen layer, sandwiching an oxygen ion conductive solid electrolyte between the two electrodes. a second sensor section that outputs a voltage according to the oxygen partial pressure ratio between the two; a second oxygen layer defining member that limits the amount of diffusion of molecules;
a second oxygen sensor having a second pump section that determines the oxygen partial pressure of the second oxygen layer according to the value of the injected current supplied between the pump electrodes; and an output voltage of the first sensor section that is a predetermined value. a first current value detecting means for supplying an inflow current to the first pump part so that the current is injected into the first pump part and detecting the value of the inflow current; a second current value detection means for supplying an inflow current to the part and detecting the value of this inflow current; and calculating the ratio of the output of the first current value detection means and the output of the second current value detection means; 1. An oxygen concentration measuring device comprising: oxygen concentration detection means for detecting the oxygen concentration of a gas to be measured based on.