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2. 发明授权

US06319165B1 Hydraulic control device for automatic transmission 有权
标题翻译：液压控制装置自动变速器
公开(公告)号：US06319165B1
公开(公告)日：2001-11-20
申请号：US09450639
申请日：1999-11-29
申请人： Masahiro Itou , Hideaki Ogasawara , Naoyuki Fukaya , Takenori Kanou , Yoshihiro Iijima
发明人： Masahiro Itou , Hideaki Ogasawara , Naoyuki Fukaya , Takenori Kanou , Yoshihiro Iijima
IPC分类号： F16H6112
CPC分类号： F16H61/0206 , F16H61/12 , F16H61/686 , F16H2061/1204 , F16H2061/1232 , F16H2061/1244 , F16H2061/1264 , F16H2061/1268 , F16H2306/00
摘要： A hydraulic control device for an automatic transmission that can ensure power transmission when a failure occurs to the solenoid valve of the hydraulic control device, the hydraulic control device having a plurality of hydraulic servos for engaging and disengaging a plurality of friction engagement elements in accordance with the supply and discharge of a hydraulic pressure so as to prevent interlock from occurring to the transmission, a solenoid valve for generating a predetermined hydraulic pressure and supplying the predetermined hydraulic pressure to a hydraulic servo selected in correspondence with a target gear ratio and fail-safe means for supplying fail-safe hydraulic pressure to at least two hydraulic servos selected to attain an arbitrary gear ratio when a failure occurs to the solenoid valve and power transmission thereby becomes impossible. Further, the hydraulic control device has a plurality of solenoid valves for supplying the predetermined hydraulic pressure to the plurality of hydraulic servos and a shutoff valve, disposed between a hydraulic pressure source and one of the solenoid valves, for shutting off supply of hydraulic pressure to that one solenoid valve when hydraulic pressure to be supplied to the hydraulic servos selected in correspondence with the target gear ratio and hydraulic pressure to be supplied to the other hydraulic servos are generated.
摘要翻译：一种用于自动变速器的液压控制装置，其能够确保当液压控制装置的电磁阀发生故障时的动力传递，该液压控制装置具有多个液压伺服机构，用于使多个摩擦接合元件按照液压的供给和排出以防止与变速器发生联锁，用于产生预定液压的电磁阀并将预定液压供应到与目标齿轮比相对应地选择的液压伺服系统，并且故障安全用于向至少两个液压伺服器提供故障安全液压的装置，当电磁阀发生故障时，所述至少两个液压伺服机构能够获得任意的传动比，从而变得不可能。此外，液压控制装置具有多个用于向多个液压伺服机构供给预定液压的电磁阀和设置在液压源和一个电磁阀之间的截止阀，用于切断液压供给产生供给到与目标齿轮比对应地选择的液压伺服器的液压的液压压力和要供给到其他液压伺服机构的液压的一个电磁阀。

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