公开(公告)号：US09488271B2

公开(公告)日：2016-11-08

申请号：US14779521

申请日：2013-11-28

申请人： JATCO Ltd ,  NISSAN MOTOR CO., LTD.

发明人： Daisuke Aoki ,  Takahiro Kobayashi ,  Seiichiro Takahashi ,  Yuta Suzuki

IPC分类号： F16H61/662 ,  F16G1/22 ,  F16H9/18

CPC分类号： F16H61/66272 ,  F16G1/22 ,  F16H9/18 ,  F16H2061/66277

摘要： A control device for a belt-type continuously variable transmission CVT includes an engine 1, a belt-type continuously-variable transmitting mechanism 4; a forward/reverse switching mechanism 3 including a forward clutch 31 and a reverse brake 32; and a hydraulic control circuit 71 configured to control a pulley hydraulic pressure and engagement-element pressures for the forward clutch 31 and the reverse brake 32. The control device includes a selection control means for outputting a pulley hydraulic command to obtain an idle-time clamping pressure which is higher than an idle-time minimum pressure (idle-time MIN-pressure) calculated from an input torque, to the hydraulic control circuit 71, when the engine 1 is in operation during a selection of N-range. A position of an element clearance generated in the belt can be maintained even if drag torque is inputted.

摘要翻译： 带式无级变速器CVT的控制装置包括发动机1，带式无级变速传动机构4; 包括前进离合器31和倒车制动器32的前进/后退切换机构3; 以及液压控制回路71，被配置为控制前进离合器31和后退制动器32的滑轮液压和接合元件压力。控制装置包括选择控制装置，用于输出滑轮液压指令以获得空转时间夹紧 在选择N档期间，当发动机1运转时，高于从输入转矩计算出的空转时间最小压力（空转时MIN值）到液压控制回路71的压力。 即使输入阻力矩，也能够保持带内产生的元件间隙的位置。

公开(公告)号：US09863533B2

公开(公告)日：2018-01-09

申请号：US15021501

申请日：2014-10-17

申请人： JATCO Ltd ,  NISSAN MOTOR CO., LTD.

发明人： Seiichiro Takahashi ,  Daisuke Aoki ,  Takahiro Kobayashi ,  Juwan Kim ,  Shinichiro Watanabe ,  Yuta Suzuki

IPC分类号： F16H61/662 ,  F16H9/18 ,  F16H61/664 ,  F16H61/04 ,  F16H61/12

CPC分类号： F16H61/662 ,  F16H9/18 ,  F16H61/66272 ,  F16H61/6649 ,  F16H2061/0485 ,  F16H2061/0488 ,  F16H2061/1232 ,  F16H2061/66222

摘要： A control apparatus for a continuously variable transmission (1) that includes a belt-type continuously variable transmission mechanism (40) and friction engagement elements (32), (33) is disclosed. The control apparatus includes: an operation position detection section (65) configured to detect an operation position of a selection lever (50); a selection control section (60b) configured to execute a selection control for engaging the friction engagement elements (32), (33) from a time point at which a switching from a non-travel range to a travel range is detected; a determination section (60) configured to determine engagement states of the friction engagement elements (32, 33); and a pulley pressure control section (60c) configured to control a pulley pressure supplied to two pulleys (41), (42). A belt slippage during an engagement of clutches is suppressed while a load on an oil pump is reduced.