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公开(公告)号：US10174822B2
公开(公告)日：2019-01-08
申请号：US15322006
申请日：2015-07-06
发明人： Kenichi Tsuchida , Toshiaki Hayashi , Masafumi Takasu , Yuta Seriguchi , Masashi Takizawa , Takafumi Inagaki , Yoshinobu Soga , Syuji Moriyama , Yoshihiro Mizuno , Hiromitsu Nitani
摘要： A hydraulic control device for an automatic transmission where the spool is locked at the first position and the switching pressure can regulate the belt holding force of the primary pulley or the secondary pulley without switching a position of the spool when the engagement pressure is supplied to the second working oil chamber, and the spool is not locked at the first position and the switching pressure can switch the spool to the second position against the urging member when the engagement pressure is not supplied to the second working oil chamber.
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公开(公告)号：US11067166B2
公开(公告)日：2021-07-20
申请号：US16667024
申请日：2019-10-29
发明人： Daiki Koyama , Yusuke Ohgata , Yoshinobu Soga , Shuji Moriyama , Hiromitsu Nitani , Tetsuya Yamamoto , Kenichi Tsuchida , Takahiro Kokubu , Toshiaki Hayashi , Koji Makino , Yuta Seriguchi
摘要： A hydraulic control unit of a vehicle drive system including an automatic transmission, and an oil pump device, includes: a first electromagnetic valve; a second electromagnetic valve; first and second oil passages; a third oil passage; a manual valve operated to connect and disconnect the first and third oil passages and a drain oil passage to and from each other, in response to an operation of a manually operated shifting device by a vehicle operator, such that the first oil passage is connected to the third oil passage when the shifting device is placed in a first operating position, while the first oil passage is connected to the drain oil passage when the shifting device is placed in a second operating position; an accumulator connected to the first oil passage; and a check valve provided in the second oil passage.
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公开(公告)号：US10428936B2
公开(公告)日：2019-10-01
申请号：US15743880
申请日：2016-08-19
发明人： Kenichi Tsuchida , Toshiaki Hayashi , Yuta Seriguchi , Masafumi Takasu , Yoichiro Kimura , Kenichi Ishii , Syuji Moriyama , Yoshinobu Soga , Hiromitsu Nitani , Takafumi Inagaki
摘要： A hydraulic control device that includes a source pressure generating valve that generates a source pressure; a solenoid valve that can supply the engagement pressure based on the source pressure; and a supply pressure switching valve that can be switched between a first state where the supply pressure switching valve can supply the engagement pressure to the second engagement element and a second state where the supply pressure switching valve can supply the source pressure to the second engagement element, the supply pressure switching valve being in the first state when the solenoid valve is operating normally, and being switched to the second state in case of abnormality in the solenoid valve.
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公开(公告)号：US10260623B2
公开(公告)日：2019-04-16
申请号：US15505342
申请日：2015-08-18
发明人： Shuji Moriyama , Takafumi Inagaki , Yoshinobu Soga , Yoshihiro Mizuno , Hiromitsu Nitani , Yuji Iwatsuru
IPC分类号： F16H57/04 , F16H61/00 , F15B21/041
摘要： A vehicle transmission having a valve body disposed adjacently to and in parallel with a side cover covering a front or rear side or a side surface of a transmission case in a vehicle width direction in a vehicle-mounted state, the side cover connected to the transmission case, in which an electromagnetic valve is included on the side cover side of the valve body, when viewed in a direction horizontal and parallel to mating surfaces of the transmission case and the side cover, a strainer for removing a foreign material in a hydraulic oil is disposed between the side cover and the valve body to overlap with at least a portion of the electromagnetic valve, and the strainer has an inflow portion for allowing the hydraulic oil to flow in disposed vertically above an oil surface.
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公开(公告)号：US10557547B2
公开(公告)日：2020-02-11
申请号：US16079842
申请日：2017-03-07
发明人： Kenichi Tsuchida , Toshiaki Hayashi , Yoichiro Kimura , Syuji Moriyama , Yoshinobu Soga , Hiromitsu Nitani , Takafumi Inagaki , Tetsuya Yamamoto
IPC分类号： F16H61/00 , F16H61/4061 , F16H61/14 , F16H57/04 , F16H59/72 , F16H61/662 , F16H61/02 , F16H61/686 , F16H59/38
摘要： A hydraulic control device includes: a pressure regulation valve that regulates a hydraulic pressure of oil supplied from an oil pump; a discharge oil passage through which the oil discharged from a fluid coupling flows when a lockup clutch is disengaged; a lubrication oil passage that supplies the oil from the discharge oil passage to a location to be lubricated; a return oil passage that returns the oil drained from the pressure regulation valve to a suction port of the oil pump; a connection oil passage that connects the lubrication oil passage and the return oil passage; and a flow direction regulation valve that is provided in the connection oil passage.
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公开(公告)号：US10295048B2
公开(公告)日：2019-05-21
申请号：US15505342
申请日：2015-08-18
发明人： Shuji Moriyama , Takafumi Inagaki , Yoshinobu Soga , Yoshihiro Mizuno , Hiromitsu Nitani , Yuji Iwatsuru
IPC分类号： F16H57/04 , F16H61/00 , F15B21/041
摘要： A vehicle transmission having a valve body disposed adjacently to and in parallel with a side cover covering a front or rear side or a side surface of a transmission case in a vehicle width direction in a vehicle-mounted state, the side cover connected to the transmission case, in which an electromagnetic valve is included on the side cover side of the valve body, when viewed in a direction horizontal and parallel to mating surfaces of the transmission case and the side cover, a strainer for removing a foreign material in a hydraulic oil is disposed between the side cover and the valve body to overlap with at least a portion of the electromagnetic valve, and the strainer has an inflow portion for allowing the hydraulic oil to flow in disposed vertically above an oil surface.
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公开(公告)号：US09982775B2
公开(公告)日：2018-05-29
申请号：US15509114
申请日：2015-09-07
IPC分类号： F16H61/12 , F16H61/02 , F16H61/662
CPC分类号： F16H61/0206 , B60Y2410/115 , F16H61/12 , F16H61/66259 , F16H2061/1252 , F16H2061/1268
摘要： Ground wires are shared between a drive-side pulley solenoid valve and a driven-side pulley solenoid valve. Therefore, when a disconnection or short circuit occurs in the shared portion, a drive-side pulley and a driven-side pulley show substantially the same behavior. As a result, changes in the speed ratio γcvt of a continuously variable transmission are suppressed and changes in vehicle behavior are also suppressed. Therefore, it is possible to suppress the degradation of drivability during the failure of the solenoid valves involved in power transmission.
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公开(公告)号：US10662977B2
公开(公告)日：2020-05-26
申请号：US16124390
申请日：2018-09-07
发明人： Yusuke Ohgata , Hiromitsu Nitani
摘要： A vehicle hydraulic system includes: (a) a hydraulic pump device to be driven by a vehicle drive source to eject a working fluid through first and second outlet ports; (b) a first line passage that guides the working fluid ejected through the first outlet port, with a hydraulic pressure being regulated to a relatively high value; (c) a downstream-side passage in which the hydraulic pressure is regulated to a relatively low value; (d) a path-switching valve device configured to allow the working fluid ejected through the second outlet port, to flow into the first line passage, when the hydraulic pressure is lower than a predetermined value, and configured to allow the working fluid ejected through the second outlet port, to flow into the downstream-side passage, when the hydraulic pressure is higher than the predetermined value; and (e) a bypass passage provided between the second outlet port and the downstream-side passage.
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公开(公告)号：US20200248783A1
公开(公告)日：2020-08-06
申请号：US16684725
申请日：2019-11-15
摘要： A vehicle power transmission device includes: an input shaft; an output shaft; a first power transmission path configured to transmit power between the input shaft and the output shaft; and a second power transmission path configured to transmit power between the input shaft and the output shaft. The first power transmission path includes a mode-switching clutch configured to be switched between a one-way mode and a free mode, the one-way mode being a mode in which power acting in a forward rotation direction is transmitted while power acting in a reverse rotation direction is interrupted, and the free mode being a mode in which power acting in the forward rotation direction and power acting in the reverse rotation direction are interrupted. The second power transmission path includes a control clutch configured such that a torque capacity of the control clutch is controllable.
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公开(公告)号：US10119580B2
公开(公告)日：2018-11-06
申请号：US15327087
申请日：2015-07-24
发明人： Kazuya Sakamoto , Atsushi Ayabe , Hiromitsu Nitani , Hiroki Kondo , Kenji Matsuo , Mitsuhiro Fukao
摘要： A vehicle includes a continuously variable transmission, a gear mechanism and a controller. The continuously variable transmission and the gear mechanism are provided in parallel with each other between an input shaft and an output shaft. The controller is configured to i) when the vehicle travels in a state where both a first clutch and a third clutch provided on the gear mechanism side are released, gradually increase a hydraulic pressure of the first clutch such that the first clutch is engaged, ii) calculate a command hydraulic pressure for setting the first clutch to a pressure regulating state on the basis of a command hydraulic pressure of the first clutch at a timing at which the amount of change in an output-side rotation speed of the first clutch becomes larger than a predetermined value, and iii) control the first clutch by using the calculated command hydraulic pressure.
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