发明名称 |
HYDRAULIC DEVICE FOR STEPLESS TRANSMISSION |
摘要 |
<p>A hydraulic device includes a switch-over valve 1140 provided at a section of a sub-passage 1105 located downstream of a location where a first bypass passage 1117 is connected and located upstream of a primary regulator 1110. The switch-over valve 1140 is switched between a blocked state, where supply of hydraulic oil to a section of the sub-passage 1105 located downstream of the switch-over valve 1140 is blocked, and a communication state, where supply of hydraulic oil to the section of the sub-passage 1105 located downstream of the switch-over valve 1140 is permitted. In the hydraulic device, when the switch-over valve 1140 is switched to the communication state, as a discharge performance of a main pump 1102 increases, a first check valve 1118 closes. Supply paths for hydraulic oil discharged from the sub-pump 1103 are automatically switched in accordance with the discharge performance of the main pump 1102. When the switch-over valve 1140 is switched to the blocked state, the first check valve 1118 opens and hydraulic oil discharged from the sub-pump 1103 is introduced into a main passage 1104.</p> |
申请公布号 |
EP2431635(A4) |
申请公布日期 |
2013.02.13 |
申请号 |
EP20090844619 |
申请日期 |
2009.05.13 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
OGATA, YUSUKE;TANAKA, KOICHI;TAKAHASHI, NOBUAKI;MATSUO, KENJI;NISHIDA, NAOFUMI |
分类号 |
F16H61/00;F16H59/18;F16H59/22;F16H59/44;F16H59/54 |
主分类号 |
F16H61/00 |
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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