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    • 2. 发明申请
    • REAL TIME LIFE MODELS FOR AUTOMATIC TRANSMISSION FLUIDS
    • 用于自动变速箱的实时生命模型
    • US20050165583A1
    • 2005-07-28
    • US10765239
    • 2004-01-26
    • Reuben SarkarBrent CalcutJames Linden
    • Reuben SarkarBrent CalcutJames Linden
    • F01M11/10G01N33/28G06F11/30G06F15/00
    • G01N33/2876F16H57/0405
    • The remaining useful life of a transmission fluid in a vehicle is continually estimated by a transmission control computer module during vehicle operation using both an oxidation model and a shift energy model. The oxidation model uses experimentally determined remaining useful fluid life values obtained at temperatures experienced by the fluid in transmission usage and subtracts incremental values from said life based on the temperature-time experience of volume fractions of the fluid in the sump and torque converter. The shift energy model starts with an estimated maximum number of shifts and continually obtains a current remaining useful life by deducting for actual shifts and estimated shift energy inputs based on fluid temperature. Notice of end of fluid useful life is given when one of the models first determines no remaining useful fluid life.
    • 在车辆操作期间,车辆中的变速器油的剩余使用寿命通过变速器控制计算机模块在氧化模型和换档能量模型两者中连续地估计。 氧化模型使用在流体在传输使用中经历的温度下获得的实验确定的剩余有用的流体寿命值,并且基于贮槽和变矩器中流体的体积分数的温度 - 时间经验从所述寿命中减去增量值。 换挡能量模型以估计的最大换挡数开始,并通过扣除实际换档和基于流体温度的估计换挡能量输入,持续获得当前剩余使用寿命。 当其中一个型号首先确定没有剩余有用的流体寿命时,给出流体使用寿命结束的注意事项。