发明名称 |
Hydraulic control apparatus for hydraulically operated vehicular transmission |
摘要 |
A hydraulic oil pressure changeover mechanism for switching an input pressure to a solenoid valve between a high pressure and a low pressure. The changeover mechanism is made up of: a pressure reduction valve to be switched between an operating condition for outputting a low hydraulic oil pressure and a non-operating condition for outputting a high hydraulic oil pressure; a changeover valve to be switched between a low-pressure position for inputting an output pressure from the pressure reduction valve to the solenoid valve and a high-pressure position for inputting a hydraulic oil pressure to be supplied without passing through the pressure reduction valve to the solenoid valve; and a control valve to be switched between a first position for outputting a first signal pressure to switch the pressure reduction valve to the non-operating condition and a second position for outputting a second signal pressure which operates in a direction to switch the changeover valve to the low-pressure position. The changeover valve can be switched to the low-pressure position when the second signal pressure and a third signal pressure are operated on the changeover valve.
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申请公布号 |
US5634864(A) |
申请公布日期 |
1997.06.03 |
申请号 |
US19960592806 |
申请日期 |
1996.01.26 |
申请人 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA |
发明人 |
NIIYAMA, TSUNEFUMI;KITSUTAKA, EIJI |
分类号 |
F16H61/00;F16H61/04;F16H61/12;F16H61/18;F16H61/68;F16H61/684;F16H61/686;F16H63/44;(IPC1-7):F16H61/04 |
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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