公开(公告)号：US20150041319A1

公开(公告)日：2015-02-12

申请号：US14454769

申请日：2014-08-08

Applicant: DENSO CORPORATION

Inventor： Yuji YAMADA ,  Mikiyasu MATSUOKA ,  Kenichi ONO ,  Takamasa OGURI ,  Takao MISHIMA

IPC: G01N27/407

CPC classification number: G01N27/407 ,  F01N3/101 ,  F01N11/00 ,  F01N13/0093 ,  F01N2550/00 ,  F01N2560/025 ,  F01N2570/14 ,  Y02T10/22 ,  Y02T10/47

Abstract: An O2 sensor has a sensor element, which includes a solid electrolyte layer and a pair of electrodes. The solid electrolyte layer is held between the electrodes, which includes an atmosphere side electrode and an exhaust side electrode. A constant current circuit is installed in an electric path, which connects between the atmosphere side electrode and a ground, to induce a flow of a predetermined constant electric current between the electrodes through the solid electrolyte layer. When the sensor element generates an electromotive force, the constant current circuit conducts an electric current, which is generated while using the electromotive force of the sensor element as an electric power source, to induce the flow of the predetermined constant electric current between the electrodes in an electromotive force range, which is equal to or larger than an electromotive force of the sensor element generated at a stoichiometric air-to-fuel ratio.

Abstract translation: O2传感器具有传感器元件，其包括固体电解质层和一对电极。 固体电解质层保持在包括大气侧电极和排气侧电极的电极之间。 恒流电路安装在连接在大气侧电极和地之间的电路中，以通过固体电解质层引起电极之间的预定恒定电流的流动。 当传感器元件产生电动势时，恒流电路传导使用传感器元件的电动势作为电源产生的电流，以引起电极之间的预定恒定电流的流动 电动势范围等于或大于以理论空燃比产生的传感器元件的电动势。

公开(公告)号：US20150041318A1

公开(公告)日：2015-02-12

申请号：US14455051

申请日：2014-08-08

Applicant: DENSO CORPORATION

Inventor： Yuji YAMADA ,  Mikiyasu MATSUOKA ,  Kenichi ONO ,  Takamasa OGURI ,  Takao MISHIMA

IPC: G01N27/409

CPC classification number: G01N27/409 ,  F01N3/101 ,  F01N11/007 ,  F01N2900/1402 ,  Y02T10/22

Abstract: An O2 sensor has a sensor element, which includes a solid electrolyte layer and a pair of electrodes. The solid electrolyte layer is held between the electrodes. The electrodes include an atmosphere side electrode, which becomes a positive side at a time of outputting an electromotive force from the sensor element, and an exhaust side electrode, which becomes a negative side at the time of outputting the electromotive force from the sensor element. A resistor is provided in an electric path that connects between the atmosphere side electrode and a ground. When the sensor element generates the electromotive force, the resistor conducts an electric current, which is generated while using the electromotive force as an electric power source, to induce a change in an output characteristic of the O2 sensor.

Abstract translation: O2传感器具有传感器元件，其包括固体电解质层和一对电极。 固体电解质层保持在电极之间。 电极包括在从传感器元件输出电动势时成为正侧的气氛侧电极和在从传感器元件输出电动势时变为负侧的排气侧电极。 在连接大气侧电极和地之间的电路中设置电阻器。 当传感器元件产生电动势时，电阻器传导在使用电动势作为电源时产生的电流，以引起O2传感器的输出特性的变化。