发明名称 |
Hydraulic pressure control device of automatic transmission |
摘要 |
A toroidal continuously variable transmission (11) having power rollers (18A-18D) held between input discs (19, 29) and output discs (21, 22) and transmitting power and a torque converter (12) having a lock up clutch (12D) connected to the continuously variable transmission (11) are provided. The line pressure of a working fluid supplied from a pump (1) is adjusted by a pressure regulator valve (2), and the adjusted line pressure is introduced to a lock up control valve (5) for controlling a fluid pressure to be supplied to the lock up clutch (12D) of the torque converter (12) through a pressure passage (31). Further, an oil cooler (32) is interposed in a downstream portion of the lock up control valve (5). The lubricating circuit of the continuously variable transmission is separated into a first lubricating circuit (33) for lubricating a bearing member of the power rollers (18A-18D) and a second lubricating circuit (35) for lubricating a rolling surface between the input and output discs (19-22) and the power rollers (18A-18D). The first lubricating circuit (33) is connected to a downstream portion of the cooler (32) and the second lubricating circuit (35) is connected to an upstream portion of the lock up control valve (5).
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申请公布号 |
US6045480(A) |
申请公布日期 |
2000.04.04 |
申请号 |
US19980112444 |
申请日期 |
1998.07.09 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
SAKAI, HIROMASA;SUGIHARA, JUN |
分类号 |
F16H15/38;F16H57/04;F16H61/00;F16H61/14;(IPC1-7):F16H57/04 |
主分类号 |
F16H15/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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