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公开(公告)号:US08308609B2
公开(公告)日:2012-11-13
申请号:US12814550
申请日:2010-06-14
申请人: Shawn A. Holland , Ralph S. Walker , George Herr , Jeffrey J. Tumavitch , Bradley D. Riedle , Steven C. Meisner , Hong Jiang , Matthew J. Shelton
发明人: Shawn A. Holland , Ralph S. Walker , George Herr , Jeffrey J. Tumavitch , Bradley D. Riedle , Steven C. Meisner , Hong Jiang , Matthew J. Shelton
CPC分类号: F16H61/0403 , B60W10/02 , B60W10/06 , B60W10/113 , B60W30/19 , F16H63/46 , F16H2061/0496 , F16H2306/54 , F16H2342/044 , Y10T477/6403
摘要: A method for controlling a power-off downshift in a powershift transmission includes disengaging the current gear, synchronizing engine speed and a speed of the target gear layshaft by increasing a torque capacity of the target gear clutch, disengaging the clutch, engaging the target gear, and reengaging the clutch.
摘要翻译: 用于控制动力换挡变速器中的断电降档的方法包括通过增加目标齿轮离合器的扭矩能力,使离合器脱离接合目标齿轮,使当前齿轮脱离接合,同步发动机转速和目标齿轮副轴的速度, 并重新启动离合器。
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公开(公告)号:US07650214B2
公开(公告)日:2010-01-19
申请号:US11876318
申请日:2007-10-22
IPC分类号: G06F17/00
CPC分类号: F16D25/0638 , F16D48/06 , F16D2500/70454
摘要: A method for controlling speed of an input shaft to a hydraulically actuated clutch that includes a hydraulic balance dam volume includes determining a limit speed of the input shaft that varies as a function of time during a predetermined period after the clutch starts rotation and that causes a servo piston for actuating the clutch to move toward an engaged position, rotating the input shaft during the period, limiting a speed of the input shaft during said period to a determined limit speed corresponding to a current time after beginning the period, and allowing the speed of the input shaft to increase to a speed greater than the determined limit speed after expiration of the period.
摘要翻译: 一种用于控制输入轴到液压致动离合器的速度的方法,该液压驱动离合器包括液压平衡坝体积,包括确定在离合器开始旋转之后的预定时间段内作为时间的函数变化的输入轴的极限转速,并且导致 伺服活塞,用于致动离合器朝向接合位置移动,在此期间旋转输入轴,在所述期间将输入轴的速度限制在与开始该时间段之后的当前时间相对应的确定极限速度,并允许速度 的输入轴增加到大于在该期间结束之后确定的极限速度的速度。
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