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公开(公告)号:US08166808B2
公开(公告)日:2012-05-01
申请号:US12835137
申请日:2010-07-13
IPC分类号: G01M15/00
CPC分类号: F02D41/222 , F01P2025/30 , F02D41/062 , F02N19/04 , Y02T10/40
摘要: A diagnostic system includes a temperature derivative module and a heater use module. The temperature derivative module determines a derivative of a temperature of one of a fluid of an engine of a vehicle and a component of the engine measured by a temperature sensor after a vehicle startup event. The heater use module selectively indicates that an engine heater was used before the vehicle startup event based on the derivative.
摘要翻译: 诊断系统包括温度导数模块和加热器使用模块。 温度导数模块确定在车辆启动事件之后,通过温度传感器测量的车辆的发动机的流体和发动机的部件之一的温度的导数。 加热器使用模块选择性地指示在基于导数的车辆启动事件之前使用发动机加热器。