发明名称 |
HYDRAULISCHE STEUERUNG FUER DEN STUFENLOS VERAENDERLICHEN ANTRIEB EINES FAHRZEUGES. |
摘要 |
<p>A hydraulic control system for a continuously variable transmission for an automotive vehicle, the transmission having a first and a second variable-diameter pulley provided on respective first and second shafts, a belt connecting the first and second pulleys, and a first and a second hydraulic cylinder for changing effective diameters of the first and second pulleys. The control system includes a first pressure regulating valve for regulating the pressure of a fluid delivered from a pressure source, and thereby establishing a first line pressure, a shift-control valve for applying the first line pressure to one of the first and second cylinders, while simultaneously permitting a flow of the fluid from the other cylinder, thereby changing the effective diameters of the first and second pulleys, and a second pressure regulating valve for regulating the pressure of a discharge flow of the fluid flowing from the above-indicated other cylinder through the shift-control valve, and thereby establishing a second line pressure lower than the first line pressure.</p> |
申请公布号 |
DE3763864(D1) |
申请公布日期 |
1990.08.30 |
申请号 |
DE19873763864 |
申请日期 |
1987.02.23 |
申请人 |
TOYOTA JIDOSHA K.K., TOYOTA, AICHI, JP |
发明人 |
KOUNO, KATSUMI;SUGAYA, MASAMI;OKAWA, SUSUMU;SOGA, YOSHINOBU, TOYOTA-SHI AICHI-KEN, JP |
分类号 |
B60W30/18;F16H61/00;F16H61/66;F16H61/662;F16H63/06;(IPC1-7):F16H59/06;F16H9/16 |
主分类号 |
B60W30/18 |
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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