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    • 1. 发明授权
    • Method for monitoring the functionality of a temperature sensor
    • 监测温度传感器功能的方法
    • US07857508B2
    • 2010-12-28
    • US11793836
    • 2005-10-24
    • Dirk FoerstnerAndreas EckertSiegfried GoetzJoerg Neumann
    • Dirk FoerstnerAndreas EckertSiegfried GoetzJoerg Neumann
    • G01K1/00G01M15/00
    • F02D41/222F01P11/14F01P11/16F01P2031/00F01P2031/30Y02T10/40
    • In a method for monitoring the functionality of a temperature sensor that can deliver an electrical signal as a function of the measured temperature and is disposed, in particular, in the cooling water circuit of an internal combustion engine, the persistence of the temperature sensor in the high signal range is made possible by a method encompassing the following steps: Characterizing the sensor as possibly faulty if the sensor indicates, upon engine shutdown, at least a maximum value of the cooling fluid temperature; determining a first gradient of the cooling fluid temperature, measured by the possibly faulty sensor, up to a first point in time after engine shutdown, and characterizing the sensor as fault-free if the gradient exceeds a minimum value; determining a second gradient of the cooling fluid temperature, measured by the possibly faulty sensor, between the point in time and a point in time after engine shutdown, and characterizing the sensor as fault-free if the second gradient exceeds a minimum value; determining the cooling fluid temperature measured by the possibly faulty sensor at a point in time after engine shutdown, and characterizing the sensor as fault-free if the cooling fluid temperature falls below a maximum value.
    • 在用于监测温度传感器的功能的方法中,所述温度传感器可以传递作为测量温度的函数的电信号,并且特别地设置在内燃机的冷却水回路中,温度传感器的持续性在 通过包括以下步骤的方法可以实现高信号范围:如果传感器在发动机停机时指示冷却液温度的至少最大值,则将传感器表征为可能有故障; 确定由可能故障的传感器测量的冷却流体温度的第一梯度,直到发动机关闭之后的第一时间点,并且如果梯度超过最小值,则将传感器表征为无故障的; 确定由可能故障的传感器测量的冷却液温度在时间点与发动机关闭后的时间点之间的第二梯度,以及如果第二梯度超过最小值则将传感器表征为无故障的; 确定在发动机关闭之后的时间点由可能故障的传感器测量的冷却流体温度,并且如果冷却流体温度低于最大值,则将传感器表征为无故障。
    • 2. 发明申请
    • Method for Monitoring the Functionality of a Temperature Sensor
    • 监测温度传感器功能的方法
    • US20090129430A1
    • 2009-05-21
    • US11793836
    • 2005-10-24
    • Dirk FoerstnerAndreas EckertSiegfried GoetzJoerg Neumann
    • Dirk FoerstnerAndreas EckertSiegfried GoetzJoerg Neumann
    • G01K15/00
    • F02D41/222F01P11/14F01P11/16F01P2031/00F01P2031/30Y02T10/40
    • In a method for monitoring the functionality of a temperature sensor that can deliver an electrical signal as a function of the measured temperature and is disposed, in particular, in the cooling water circuit of an internal combustion engine, the persistence of the temperature sensor in the high signal range is made possible by a method encompassing the following steps: Characterizing the sensor as possibly faulty if the sensor indicates, upon engine shutdown, at least a maximum value of the cooling fluid temperature; determining a first gradient of the cooling fluid temperature, measured by the possibly faulty sensor, up to a first point in time after engine shutdown, and characterizing the sensor as fault-free if the gradient exceeds a minimum value; determining a second gradient of the cooling fluid temperature, measured by the possibly faulty sensor, between the point in time and a point in time after engine shutdown, and characterizing the sensor as fault-free if the second gradient exceeds a minimum value; determining the cooling fluid temperature measured by the possibly faulty sensor at a point in time after engine shutdown, and characterizing the sensor as fault-free if the cooling fluid temperature falls below a maximum value.
    • 在用于监测温度传感器的功能的方法中,所述温度传感器可以传递作为测量温度的函数的电信号,并且特别地设置在内燃机的冷却水回路中,温度传感器的持续性在 通过包括以下步骤的方法可以实现高信号范围:如果传感器在发动机停机时指示冷却液温度的至少最大值,则将传感器表征为可能有故障; 确定由可能故障的传感器测量的冷却流体温度的第一梯度,直到发动机关闭之后的第一时间点,并且如果梯度超过最小值,则将传感器表征为无故障的; 确定由可能故障的传感器测量的冷却液温度在时间点与发动机关闭后的时间点之间的第二梯度,以及如果第二梯度超过最小值则将传感器表征为无故障的; 确定在发动机关闭之后的时间点由可能故障的传感器测量的冷却流体温度,并且如果冷却流体温度低于最大值,则将传感器表征为无故障。