JPS61189259U

JPS61189259U -

Info

Publication number: JPS61189259U
Application number: JP7325885U
Authority: JP
Priority date: 1985-05-16
Filing date: 1985-05-16
Publication date: 1986-11-26

Description

[Brief explanation of the drawing]

第１図は本考案の基本概念図、第２〜９図は本
考案に係る酸素濃度測定装置の一実施例を示す図
であり、第２図はその全体構成図、第３図はその
酸素センサの分解斜視図、第４図はその酸素セン
サの断面図、第５図はその空燃比検出回路の回路
図、第６図はその空燃比と検出電圧との関係を示
す図、第７図はそのヒータ通電制御のプログラム
を示すフローチヤート、第８図はその機関代表温
度とＴＤＬとの関係を示す図、第９図はその機関
代表温度とＴＤＨとの関係を示す図、第１０図は
そのヒータ信号を示す図である。１…エンジン、１４…運転状態検出手段、１５
…コントロールユニツト（ヒータ通電手段）。 Figure 1 is a basic conceptual diagram of the present invention, Figures 2 to 9 are diagrams showing one embodiment of the oxygen concentration measuring device according to the present invention, Figure 2 is its overall configuration diagram, and Figure 3 is its oxygen concentration measuring device. FIG. 4 is a cross-sectional view of the oxygen sensor, FIG. 5 is a circuit diagram of the air-fuel ratio detection circuit, FIG. 6 is a diagram showing the relationship between the air-fuel ratio and detected voltage, and FIG. 7 is an exploded perspective view of the sensor. is a flowchart showing the heater energization control program, FIG. 8 is a diagram showing the relationship between the engine representative temperature and TDL, FIG. 9 is a diagram showing the relationship between the engine representative temperature and TDH, and FIG. 10 is a diagram showing the relationship between the engine representative temperature and TDH. It is a figure which shows the heater signal. 1... Engine, 14... Operating state detection means, 15
...Control unit (heater energizing means).

Claims

[Scope of Claim for Utility Model Registration] a. An oxygen sensor having an element part for detecting the oxygen concentration in exhaust gas and a heater for heating the element part; b An operating state detection means for detecting the operating state of the engine; c When the engine starts, the heater of the oxygen sensor is energized for a predetermined time so that the element part reaches a first temperature lower than the target temperature, and after a predetermined time, the heater is energized so that the second temperature is the target temperature. An oxygen concentration measuring device comprising: a heater energizing means for energizing a heater;