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    • 1. 发明授权
    • Air fuel ratio detection apparatus
    • 空燃比检测装置
    • US07964073B2
    • 2011-06-21
    • US11604218
    • 2006-11-27
    • Masamichi HiraiwaTakeshi KawaiSatoshi TeramotoShigeki MoriHiroshi Inagaki
    • Masamichi HiraiwaTakeshi KawaiSatoshi TeramotoShigeki MoriHiroshi Inagaki
    • G01N27/419
    • G01N27/419
    • Using a gas detection voltage Vs output from a terminal CU, a determination is made at to whether, after startup of an air-fuel ratio detection apparatus (1), a full-range air-fuel ratio sensor (10) has reached a semi-activated state in which a determination can be made as to whether the air-fuel ratio is on the rich or lean side based on a change in a gas detection signal Vic. After determining that the sensor has reached the semi-activated state, the signal Vic is compared with a threshold to determine whether the air-fuel ratio is on the rich or lean side. In the apparatus (1), the potential difference between an outer pump electrode of a pump cell (14) and a reference electrode of an oxygen concentration measurement cell (24) is obtained via a first differential amplification circuit (53) as the gas detection signal Vic, the signal Vic being highly responsive to a change in air-fuel ratio of exhaust gas.
    • 使用从端子CU输出的气体检测电压Vs,判定在空燃比检测装置(1)启动后,全范围空燃比传感器(10)到达半空 基于气体检测信号Vic的变化,能够进行空燃比是富气还是偏侧的判定。 在确定传感器已经达到半激活状态之后,将信号Vic与阈值进行比较,以确定空燃比是富有还是偏侧。 在装置(1)中,通过作为气体检测器的第一差分放大电路(53)获得泵电池(14)的外泵电极与氧浓度测定电池(24)的参比电极之间的电位差 信号Vic,信号Vic对废气的空燃比变化高度响应。
    • 2. 发明申请
    • Air fuel ratio detection apparatus
    • 空燃比检测装置
    • US20070119437A1
    • 2007-05-31
    • US11604218
    • 2006-11-27
    • Masamichi HiraiwaTakeshi KawaiSatoshi TeramotoShigeki MoriHiroshi Inagaki
    • Masamichi HiraiwaTakeshi KawaiSatoshi TeramotoShigeki MoriHiroshi Inagaki
    • G01N27/41
    • G01N27/419
    • Using a gas detection voltage Vs output from a terminal CU, a determination is made at to whether, after startup of an air-fuel ratio detection apparatus (1), a full-range air-fuel ratio sensor (10) has reached a semi-activated state in which a determination can be made as to whether the air-fuel ratio is on the rich or lean side based on a change in a gas detection signal Vic. After determining that the sensor has reached the semi-activated state, the signal Vic is compared with a threshold to determine whether the air-fuel ratio is on the rich or lean side. In the apparatus (1), the potential difference between an outer pump electrode of a pump cell (14) and a reference electrode of an oxygen concentration measurement cell (24) is obtained via a first differential amplification circuit (53) as the gas detection signal Vic, the signal Vic being highly responsive to a change in air-fuel ratio of exhaust gas.
    • 使用从端子CU输出的气体检测电压Vs,判定在空燃比检测装置(1)启动后,全范围空燃比传感器(10)到达半空 基于气体检测信号Vic的变化,能够进行空燃比是富气还是偏侧的判定。 在确定传感器已经达到半激活状态之后,将信号Vic与阈值进行比较,以确定空燃比是富有还是偏侧。 在装置(1)中,通过作为气体检测器的第一差分放大电路(53)获得泵电池(14)的外泵电极与氧浓度测定电池(24)的参比电极之间的电位差 信号Vic,信号Vic对废气的空燃比变化高度响应。
    • 3. 发明授权
    • Sensor control device and sensor control method
    • 传感器控制装置和传感器控制方法
    • US08877024B2
    • 2014-11-04
    • US12957641
    • 2010-12-01
    • Takeshi KawaiHiroshi InagakiKoji ShiotaniHirotaka OnogiSatoshi Teramoto
    • Takeshi KawaiHiroshi InagakiKoji ShiotaniHirotaka OnogiSatoshi Teramoto
    • G01N27/409G01N27/417
    • G01N27/419F02D41/1454F02D41/146F02D41/1494F02D41/2432F02D41/2474G01N27/407
    • [Objective] An object is to provide a sensor control apparatus and a sensor-control-apparatus control method which can reduce variation in startup time among a plurality of times of execution of detection processing, in consideration of variation in output characteristic among a plurality of gas sensors.[Means for Solution] In a sensor control apparatus, before drive control (S55 to S80) is started, preliminary control is executed so as to supply a constant current to a second oxygen pump cell over a constant time, to thereby control to a constant level the amount of oxygen pumped from a second measurement chamber to the outside of the second measurement chamber (S40 to 50). The preliminary control is executed under control conditions of the sensor control apparatus which are determined for each gas sensor and are associated with the amount of oxygen pumped from the second measurement chamber to the outside thereof. The control conditions bring into a target range the concentration correspondence value calculated after start of the drive control which is started after the preliminary control is executed in a state in which a reference gas having a known concentration is introduced into the gas sensor.
    • [目的]本发明的目的是提供一种传感器控制装置和传感器控制装置控制方法,其可以在多次执行检测处理之间减少启动时间的变化,考虑到多个 气体传感器。 [解决方案]在传感器控制装置中,在开始驱动控制(S55〜S80)之前,执行预备控制,以便在恒定时间内向第二氧泵单元提供恒定电流,从而控制为恒定 将从第二测量室泵送的氧气量调整到第二测量室外(S40至50)。 在对于每个气体传感器确定的传感器控制装置的控制条件下执行预备控制,并且与从第二测量室泵送到其外部的氧气量相关联。 控制条件使目标范围成为在将具有已知浓度的参考气体引入气体传感器的状态下进行预控制之后开始的驱动控制开始后计算出的浓度对应值。
    • 8. 发明授权
    • Temperature sensor control apparatus
    • 温度传感器控制装置
    • US07573275B2
    • 2009-08-11
    • US11509566
    • 2006-08-25
    • Hiroshi InagakiYuji Oi
    • Hiroshi InagakiYuji Oi
    • G01R27/08
    • G01K7/24G01K2205/04
    • A temperature sensor control apparatus includes a reference potential section, a driving potential section set to a driving electric potential, a temperature sensor configured to vary a resistance in accordance with a temperature, and disposed between the reference potential section and the driving potential section, a conduction path, two reference resistance elements each connected in series with the temperature sensor, a potential controlled point disposed in the conduction path between the reference resistance elements, a potential setting section configured to set an electric potential of the potential controlled point to the driving electric potential; and a resistance switching control section configured to control the potential setting section to switch the electric potential of the potential controlled point, and to switch each of the reference resistance elements to one of an energized state and a deenergized state.
    • 温度传感器控制装置包括参考电位部分,设置为驱动电位的驱动电位部分,配置为根据温度改变电阻并设置在参考电位部分和驱动电位部分之间的温度传感器, 导通路径,与温度传感器串联连接的两个参考电阻元件,设置在参考电阻元件之间的导通路径中的电位受控点,被配置为将电势受控点的电势设定为驱动电 潜在; 以及电阻切换控制部,被配置为控制所述电位设定部切换所述电位受控点的电位,并将所述基准电阻元件切换为通电状态和断电状态。