知搜-全球专利检索

  1. 登录
  2. 注册
发明授权
CN101103265B 用于排气传感器的老化检测器和检测方法 有权

用于排气传感器的老化检测器和检测方法
摘要：
本发明公开了一种排气传感器的老化检测器。所述检测器包括：第一加热器电阻估计器(16)，其基于排气传感器的器件电阻来估计加热排气传感器的加热器的电阻；加热器电阻计算器(17)，其基于加热器的加热器电流来计算加热器的电阻；及老化确定器(18)，其通过比较估计的加热器的电阻和计算出的加热器的电阻来确定排气传感器是否老化。
摘要（英）：

A degradation detector of an exhaust gas sensor is disclosed. The detector comprises a first heater resistance estimator (16) for estimating a resistance of a heater that heats the exhaust gas sensor, based on a device resistance of the exhaust gas sensor; a heater resistance calculator (17) for calculating a resistance of the heater, based on a heater current of the heater; and a degradation determiner (18) for determining whether the exhaust gas sensor is degraded, by comparing the estimated resistance of the heater and the calculated resistance of the heater.

公开/授权文献
0/0