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1.发明授权公开(公告)号：US08965653B2
公开(公告)日：2015-02-24
申请号：US13949295
申请日：2013-07-24
CPC分类号： F16D48/06 , B60W10/02 , B60W10/10 , F16D48/062 , F16D2500/1026 , F16D2500/3065 , F16D2500/30803 , F16D2500/3144 , F16D2500/3166 , F16D2500/5085 , F16D2500/70217 , F16D2500/70282 , F16D2500/70406 , Y02T10/76 , Y10T477/6237 , Y10T477/743 , Y10T477/78
摘要： A vehicle transmission includes a plurality of oncoming clutches that are hydraulically-actuated. A controller is operatively connected to the plurality of oncoming clutches. An algorithm stored on and executable by the controller causes the controller to determine if at least one predefined coast condition is met and identify the plurality of oncoming clutches configured to be engageable during a downshift event from an initial gear ratio to respective other gear ratios. The initial gear ratio is greater than each of the respective other gear ratios. The algorithm causes the controller to generate a first pressure command to at least partially pressurize a first one of the oncoming clutches to a first staging pressure (PS1) if the at least one predefined coast condition is met prior to the downshift event. The first staging pressure (PS1) is defined as a first return spring pressure (PR1) minus a first variable correction factor (CF1).
摘要翻译： 车辆变速器包括液压致动的多个迎面而来的离合器。 控制器可操作地连接到多个迎面而来的离合器。 存储在控制器上并且可由控制器执行的算法使得控制器确定是否满足至少一个预定义的滑行条件，并且识别被配置为在从初始齿轮比到相应的其它传动比的降档事件期间可接合的多个迎面而来的离合器。 初始齿轮比大于各自的其它齿轮比。 如果在降档事件之前满足至少一个预定的滑行条件，该算法使得控制器产生第一压力命令，以使至少部分地将迎面而来的离合器中的第一个离合器加压到第一分段压力（PS1）。 第一分级压力（PS1）被定义为第一复位弹簧压力（PR1）减去第一可变校正系数（CF1）。
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2.发明申请公开(公告)号：US20150032341A1
公开(公告)日：2015-01-29
申请号：US13949295
申请日：2013-07-24
CPC分类号： F16D48/06 , B60W10/02 , B60W10/10 , F16D48/062 , F16D2500/1026 , F16D2500/3065 , F16D2500/30803 , F16D2500/3144 , F16D2500/3166 , F16D2500/5085 , F16D2500/70217 , F16D2500/70282 , F16D2500/70406 , Y02T10/76 , Y10T477/6237 , Y10T477/743 , Y10T477/78
摘要： A vehicle transmission includes a plurality of oncoming clutches that are hydraulically-actuated. A controller is operatively connected to the plurality of oncoming clutches. An algorithm stored on and executable by the controller causes the controller to determine if at least one predefined coast condition is met and identify the plurality of oncoming clutches configured to be engageable during a downshift event from an initial gear ratio to respective other gear ratios. The initial gear ratio is greater than each of the respective other gear ratios. The algorithm causes the controller to generate a first pressure command to at least partially pressurize a first one of the oncoming clutches to a first staging pressure (PS1) if the at least one predefined coast condition is met prior to the downshift event. The first staging pressure (PS1) is defined as a first return spring pressure (PR1) minus a first variable correction factor (CF1).
摘要翻译： 车辆变速器包括液压致动的多个迎面而来的离合器。 控制器可操作地连接到多个迎面而来的离合器。 存储在控制器上并且可由控制器执行的算法使得控制器确定是否满足至少一个预定义的滑行条件，并且识别被配置为在从初始齿轮比到相应的其它传动比的降档事件期间可接合的多个迎面而来的离合器。 初始齿轮比大于各自的其它齿轮比。 如果在降档事件之前满足至少一个预定的滑行条件，该算法使得控制器产生第一压力命令，以使至少部分地将迎面而来的离合器中的第一个离合器加压到第一分段压力（PS1）。 第一分级压力（PS1）被定义为第一复位弹簧压力（PR1）减去第一可变校正系数（CF1）。
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