公开(公告)号：US20140238853A1

公开(公告)日：2014-08-28

申请号：US14188981

申请日：2014-02-25

申请人： NGK SPARK PLUG CO., LTD.

发明人： Akihiro YOSHIDA ,  Kenji KATO ,  Koji SHIOTANI

IPC分类号： G01N27/409

CPC分类号： G01N27/409 ,  G01N27/4065 ,  G01N33/0037 ,  Y02A50/245

摘要： A gas sensor control apparatus for controlling a gas sensor element, the gas sensor element including first and second measuring chambers and the gas sensor control apparatus including first chamber control unit for controlling an oxygen concentration in the first chamber; second chamber control unit for applying a second chamber pump voltage to disassociate an oxygen-containing specific gas contained in the second chamber and thereby generate a concentration-dependent current; current detecting unit; voltage changing unit for changing the second chamber pump voltage; and deterioration determination unit for determining the deterioration state of the gas sensor element based on a transient response of the concentration-dependent current.

摘要翻译： 一种用于控制气体传感器元件的气体传感器控制装置，所述气体传感器元件包括第一和第二测量室，所述气体传感器控制装置包括用于控制第一室中的氧浓度的第一室控制单元; 第二室控制单元，用于施加第二室泵电压以解除包含在第二室中的含氧特定气体，从而产生浓度依赖电流; 电流检测单元; 电压改变单元，用于改变第二室泵电压; 以及劣化判定单元，其基于浓度依赖电流的瞬态响应来确定气体传感器元件的劣化状态。

公开(公告)号：US20150377822A1

公开(公告)日：2015-12-31

申请号：US14319067

申请日：2014-06-30

申请人： NGK SPARK PLUG CO., LTD.

发明人： Akihiro YOSHIDA ,  Kenji KATO ,  Koji SHIOTANI

IPC分类号： G01N27/409

CPC分类号： G01N27/409 ,  G01N27/419

摘要： A gas sensor controller (100) controls a gas sensor element (10) which has a first pump cell (111), a second pump cell (113), and an oxygen concentration detection cell (112). The controller includes first chamber control means (51) to (53) which pumps oxygen out of or into a first measurement chamber MR1 such that a concentration voltage Vs becomes equal to a target voltage Vr; target voltage changing means S72, S75 which changes the target voltage Vr from a first target voltage Vr1 to a second target voltage Vr2; current detection means (55) which detects the magnitude of a concentration current Ip2 flowing between first electrode (145) and second electrode (147); and deterioration determination means S7 which determines the deterioration state of the gas sensor element from a change which occurs in the concentration current Ip2 due to the change in the target voltage Vr.

摘要翻译： 气体传感器控制器（100）控制具有第一泵浦单元（111），第二泵浦单元（113）和氧浓度检测单元（112）的气体传感器元件（10）。 控制器包括第一室控制装置（51）至（53），其将氧气排出或流入第一测量室MR1，使得浓度电压Vs变为等于目标电压Vr; 将目标电压Vr从第一目标电压Vr1变更为第二目标电压Vr2的目标电压变更单元S72，S75; 电流检测装置（55），其检测在第一电极（145）和第二电极（147）之间流动的浓度电流Ip2的大小; 以及由于目标电压Vr的变化而由浓度电流Ip2发生的变化而决定气体传感器元件的劣化状态的劣化判定单元S7。