公开(公告)号：US06319172B1

公开(公告)日：2001-11-20

申请号：US09524595

申请日：2000-03-14

申请人： Todd M Steinmetz ,  Gregory A Hubbard

发明人： Todd M Steinmetz ,  Gregory A Hubbard

IPC分类号： F16H6104

CPC分类号： F16H61/061 ,  F16H61/08 ,  F16H2061/062 ,  Y10T477/6937 ,  Y10T477/69387

摘要： An improved transmission upshift control in which the off-going clutch is controlled to emulate the behavior of an ideal free-wheel device to thereby achieve nearly ideal timing of the off-going clutch disengagement relative to the on-coming clutch engagement. During the preparation phase of the shift, the off-going pressure is reduced in proportion to the estimated volume of fluid supplied to the on-coming clutch such that the off-going pressure is at a calibrated value when the on-coming clutch is filled. However, the calibrated value is adjusted upward in direct relation to the transmission input torque above a given level so as to emulate the reaction torque that would be exerted by an ideal free-wheel device for maintaining the current speed ratio. The torque phase of the control commences when the estimated volume indicates that the on-coming clutch is completely filled. At such point, the off-going clutch pressure decreases from the calibrated value at a rate determined as a function of the scheduled on-coming clutch torque to emulate the rate of decay that would occur with an ideal free-wheel device as the on-coming clutch engages. If the confidence level is low, the off-going clutch control parameters are biased to extend the engagement of the off-going clutch. If the extended engagement of the off-going clutch results in a tie-up condition due to engagement of the on-coming clutch, the off-going pressure is quickly released.

摘要翻译： 改进的变速器升档控制，其中控制脱离离合器以模拟理想的离合器装置的行为，从而实现相对于即将离合器接合的脱离离合器分离的几乎理想的定时。 在换档的准备阶段期间，离开的压力与提供给即将离合器的流体的估计体积成比例地减小，使得当接通的离合器被填充时，脱离压力处于校准值 。 然而，校准值与传动输入扭矩直接相关的方式向上调整到高于给定的水平，以便模拟由理想的剩余轮装置施加的用于维持当前速度比的反作用转矩。 当估计的音量表示即将到来的离合器完全充满时，控制的扭矩相位开始。 在这一点上，脱离离合器压力以校准值以按照预定的接近离合器扭矩的函数确定的速率降低，以模拟在理想的离合器装置中将发生的衰减速率， 离合器啮合。 如果置信水平低，则偏离离合器控制参数被偏置以延长脱离离合器的接合。 如果脱离离合器的延长接合导致由于接合离合器的接合而导致的结合状态，则快速释放脱离的压力。

公开(公告)号：US06285942B1

公开(公告)日：2001-09-04

申请号：US09531848

申请日：2000-03-20

申请人： Todd M Steinmetz ,  Jeffrey Kurt Runde ,  Gregory A Hubbard ,  Phillip F McCauley ,  Charles Francis Long ,  Martin Robert Dadel

发明人： Todd M Steinmetz ,  Jeffrey Kurt Runde ,  Gregory A Hubbard ,  Phillip F McCauley ,  Charles Francis Long ,  Martin Robert Dadel

IPC分类号： G06F1700

CPC分类号： F16H61/061 ,  F16H2061/062 ,  Y10T477/69379 ,  Y10T477/69387

摘要： An improved shift control for a hydraulic automatic transmission in which the apply chamber of an on-coming clutch is filled in the preparation phase of the shift using a hydraulic flow rate model to estimate the volume of hydraulic fluid supplied to the apply chamber. In an initial portion of the fill interval, fluid is supplied to the apply chamber at a first elevated pressure, while continuously updating the fluid volume estimate. When the remaining un-filled volume of the apply chamber reaches a reference volume, the supply pressure is reduced to a second pressure at which the next phase of the shift is to be carried out. When the chamber volume is filled, the torque capacity of the clutch rises to a level corresponding to the second pressure, and the next phase of the shift automatically ensues.

摘要翻译： 一种用于液压自动变速器的改进的变速控制装置，其中使用液压流量模型将待命离合器的施加室填充在变速器的准备阶段，以估计供给到施加室的液压流体的体积。 在填充间隔的初始部分中，在连续更新流体体积估计的同时，以第一升高的压力将流体供应到施用室。 当施加室的剩余未填充体积达到参考体积时，供应压力降低到要进行下一个相移阶段的第二压力。 当室容积填充时，离合器的扭矩容量上升到与第二压力相对应的水平，并且自动地进行下一阶段的换档。