公开(公告)号：US4553424A

公开(公告)日：1985-11-19

申请号：US477845

申请日：1983-03-22

申请人： Shigenori Sakurai ,  Takashi Kamo ,  Shirou Kimura

发明人： Shigenori Sakurai ,  Takashi Kamo ,  Shirou Kimura

IPC分类号： F02D41/14 ,  F02D41/24 ,  G01N27/406 ,  G01N27/04

CPC分类号： F02D41/1476 ,  F02D41/1455 ,  F02D41/1479 ,  F02D41/2496 ,  G01N27/4065 ,  F02D41/1456

摘要： A method for detecting the oxygen concentration of a gas to be measured is disclosed using the limiting current type oxygen sensor. The method is characterized in that the relationship of an inclined straight line between the voltages applied to the oxygen sensor and the currents outputted therefrom is determined in such a manner that the inclined straight line may pass through the flat portions of the limiting current in the voltage-current characteristics curves at the different oxygen concentrations. The relationship between the outputted currents and the oxygen concentrations at the flat portion is such that when a given magnitude of voltage is applied to the oxygen sensor to cause it to output a current, a voltage which corresponds to this current at the inclined straight line is determined. The voltage thus determined is applied to the oxygen sensor to cause it to output a current. The oxygen concentration is determined from the current thus outputted with reference to the outputted current-oxygen concentration conversion straight line. There is also disclosed a method for controlling the air-to-fuel ratio of a gas from an engine using the above voltage-current characteristic curves, inclined straight line and outputted current-oxygen concentration.

摘要翻译： 公开了使用极限电流型氧传感器来检测待测气体的氧浓度的方法。 该方法的特征在于，施加到氧传感器的电压和从其输出的电流之间的倾斜直线的关系以这样的方式确定：倾斜的直线可以通过电压中的限制电流的平坦部分 - 不同氧浓度下的电流特性曲线。 输出电流和平坦部分的氧浓度之间的关系使得当给氧传感器施加给定的电压以使其输出电流时，在倾斜直线处对应于该电流的电压为 决心。 将如此确定的电压施加到氧传感器以使其输出电流。 从根据输出的电流 - 氧浓度转换直线输出的电流求出氧浓度。 还公开了使用上述电压 - 电流特性曲线，斜直线和输出的电流 - 氧浓度来控制来自发动机的气体的空燃比的方法。

公开(公告)号：US4514277A

公开(公告)日：1985-04-30

申请号：US429458

申请日：1982-09-30

申请人： Shigenori Sakurai ,  Takashi Kamo ,  Toshinobu Furutani ,  Shirou Kimura ,  Yoshio Torisu ,  Mari Okazaki

发明人： Shigenori Sakurai ,  Takashi Kamo ,  Toshinobu Furutani ,  Shirou Kimura ,  Yoshio Torisu ,  Mari Okazaki

IPC分类号： G01N27/41 ,  G01N27/407 ,  G01N27/409 ,  G01N27/416 ,  G01N27/58

CPC分类号： G01N27/4075

摘要： An oxygen sensor element having an oxygen ion-permeable solid electrolyte having a tabular or columnar shape and electrode layers formed on the solid electrolyte. At least one of the electrode layers is composed of a fired body having a uniform structure consisting of 100 weight parts of a metal and 0.1 to 10 weight parts of a glass which consists of the following materials in molar amounts: SiO.sub.2, 62-75%; ZrO.sub.2, 7-11%; R.sub.2 O, 13-23%; R'O, 1-10%; Al.sub.2 O.sub.3, 0-4%; B.sub.2 O.sub.3, 0-6%; Fe.sub.2 O.sub.3, 0-5%; CaF.sub.2, 0-2%; and TiO.sub.2, 0-4%; wherein R.sub.2 O is Na.sub.2 O which is substantially pure or is substituted by Li.sub.2 O within 2 mole percent thereof, and R'O is an oxide selected from the group consisting of the alkaline-earth metal oxides, ZnO and MnO. Disclosed also is a method of producing the oxygen sensor element.

摘要翻译： 一种氧传感器元件，其具有具有平板状或柱状形状的氧离子可透过的固体电解质和在固体电解质上形成的电极层。 电极层中的至少一个由具有由100重量份的金属组成的均匀结构的烧结体和0.1〜10重量份的由以下摩尔量的材料组成的玻璃组成：SiO 2，62-75％ ; ZrO2，7-11％; R2O，13-23％; R'O，1-10％; Al2O3，0-4％; B2O3，0-6％; Fe2O3，0-5％; CaF2，0-2％; 和TiO2，0-4％; 其中R 2 O是Na 2 O，其基本上是纯的或被其2摩尔％以内的Li 2 O取代，R'O是选自碱土金属氧化物，ZnO和MnO的氧化物。 还公开了一种氧传感器元件的制造方法。