公开(公告)号：US20170115250A1

公开(公告)日：2017-04-27

申请号：US15315738

申请日：2015-06-04

Applicant: DENSO CORPORATION

Inventor： Takashi ARAKI ,  Keigo MIZUTANI

IPC: G01N27/41 ,  G01N27/416 ,  G01M15/10 ,  G01N27/407

CPC classification number: G01N27/41 ,  G01M15/104 ,  G01N27/4072 ,  G01N27/416 ,  G01N27/419

Abstract: A gas sensor device is equipped with a pump cell and a sensor cell. The pump cell works to regulate the concentration of oxygen in a measurement gas space. The sensor cell works to measure an oxygen ion current flowing between a sensor electrode and a reference electrode. The gas sensor device is designed to subtract the oxygen ion current value I2, as measured by the sensor cell a given period of time after spraying of fuel into the internal combustion engine is interrupted, from the oxygen ion current value I1, as measured by the sensor cell when the fuel is being sprayed into the internal combustion engine, to derive the concentration of a given gas component based on the corrected oxygen ion current value I. This results in improved accuracy in determining the concentration of the given gas component.

公开(公告)号：US20160341691A1

公开(公告)日：2016-11-24

申请号：US15109943

申请日：2015-01-19

Applicant: DENSO CORPORATION

Inventor： Mitsunobu NAKATOU ,  Keigo MIZUTANI ,  Takashi ARAKI

IPC: G01N27/419 ,  G01N27/41

CPC classification number: G01N27/419 ,  G01N27/41

Abstract: Provided is a gas sensor element that can increase detection accuracy of a specific gas component concentration by means of a sensor cell by reflecting changes in the operating temperature of a gas sensor element. The gas sensor element is provided with a solid electrolyte body having oxygen ion conductivity, a heater stacked to the solid electrolyte body via a reference gas space, a pump cell adjusting oxygen concentration in a measuring gas space, a sensor cell detecting specific gas component concentration in the measuring gas space, and an electronic conduction detector cell detecting current resulting from electronic conduction due to the heater. The electronic conduction detector cell includes an electronic conductor electrode which is provided to a measuring gas side surface of the solid electrolyte body and covered with an insulator.

Abstract translation: 提供了一种气体传感器元件，其能够通过反映气体传感器元件的工作温度的变化，借助于传感器单元来提高特定气体成分浓度的检测精度。 气体传感器元件设置有具有氧离子传导性的固体电解质体，通过参考气体层叠到固体电解质体的加热器，测量气体空间中调节氧浓度的泵电池，检测特定气体成分浓度的传感器单元 在测量气体空间中，以及电子传导检测器单元检测由于加热器而导致的电子传导的电流。 电子导电检测器单元包括设置在固体电解质体的测量气体侧表面并被绝缘体覆盖的电子导体电极。