公开(公告)号：US08510003B2

公开(公告)日：2013-08-13

申请号：US12861387

申请日：2010-08-23

申请人： Diana Yanakiev ,  Yuji Fujii ,  Eric Tseng ,  Gregory Michael Pietron ,  Joseph F Kucharski

发明人： Diana Yanakiev ,  Yuji Fujii ,  Eric Tseng ,  Gregory Michael Pietron ,  Joseph F Kucharski

IPC分类号： F16H59/14

CPC分类号： F16H61/0213 ,  F16H61/061 ,  F16H61/08 ,  F16H61/686 ,  F16H2342/044

摘要： A closed loop shift control apparatus and method based on estimated torque in friction elements controls a torque transfer phase when shifting from a low gear configuration to a high gear configuration for an automatic transmission system. When pressure actuated friction elements are selectively engaged and released to establish torque flow paths in the transmission, estimates of torsional load exerted on the off-going friction element are used to predict the optimal off-going friction element release timing for achieving a consistent shift feel. The estimated torque is preferably calculated by using estimated torque signals generated as a function of speed measurements represented either the engine speed and turbine output speed or transmission output speed and wheel speed under dynamically changing conditions.

摘要翻译： 基于摩擦元件中的估计转矩的闭环换档控制装置和方法控制从低档配置转换到用于自动变速器系统的高齿轮配置的转矩传递阶段。 当压力驱动的摩擦元件选择性地接合和释放以在变速器中建立扭矩流动路径时，使用施加在脱离摩擦元件上的扭转载荷的估计来预测最佳的脱离摩擦元件释放时间以实现一致的换档感觉 。 估计扭矩优选地通过使用作为速度测量的函数产生的估计转矩信号来计算，其表示动态变化的条件下的发动机转速和涡轮机输出速度或变速器输出速度和车轮速度。