Diagnostic device and method for an intake air temperature sensor of an internal combustion engine
    10.
    发明授权
    Diagnostic device and method for an intake air temperature sensor of an internal combustion engine 有权
    用于内燃机的进气温度传感器的诊断装置和方法

    公开(公告)号:US07818997B2

    公开(公告)日:2010-10-26

    申请号:US12067061

    申请日:2007-07-03

    申请人: Atsushi Iwai

    发明人: Atsushi Iwai

    IPC分类号: G01M15/04

    摘要: An abnormality diagnostic device diagnoses the presence/absence of abnormality of an intake air temperature sensor (21) on the basis of the magnitude of deviation between the lowest temperature of the intake air detected via the intake air temperature sensor (21) in a period from the startup of an internal combustion engine until the trend of change in the temperature of the air taken into the internal combustion engine becomes stable and a temperature detected via a water temperature sensor (22). If the decline in the temperature of the intake air detected via the intake air temperature sensor (21) within the aforementioned period is greater than or equal to a predetermined criterion value (IAT1), the abnormality diagnosis is suspended.

    摘要翻译: 异常诊断装置基于从进气温度传感器(21)检测到的进气的最低温度之间的偏差的大小,在进气温度传感器(21)的异常的时间内,诊断进气温度传感器(21)的异常的存在/不存在 在内燃机的空气温度变化趋势变得稳定并且经由水温传感器(22)检测到的温度之后,内燃机的启动。 如果在上述期间内经由进气温度传感器(21)检测到的进气的温度下降大于或等于预定标准值(IAT1),则异常诊断被暂停。