Patents by Inventor Hiromu Ogino
Hiromu Ogino has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10364888Abstract: A control device for a continuously variable transmission includes: a line pressure generating-section configured to generate a line pressure; a pilot valve configured to supply a pilot pressure regulated so as not to exceed a first predetermined pressure when the line pressure exceeds the first predetermined pressure; a control section configured to generate the clamping forces by controlling the pilot pressure; a line pressure increase section configured to increase the line pressure to be greater than the first predetermined pressure when the control to increase the line pressure is performed when the line pressure is lower than the first predetermined pressure.Type: GrantFiled: May 28, 2015Date of Patent: July 30, 2019Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Tomoaki Honma, Yuta Suzuki, Itaru Shinohara, Hiroshi Sekiya, Hiromu Ogino
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Patent number: 10252719Abstract: A control device for a continuously variable transmission includes a lock-up clutch of a torque converter which is arranged to connect and disconnect a power transmission between a power source and the driving wheel, and a control section configured to output a hydraulic pressure command value. The control section is configured to control a transmission gear ratio of the continuously variable transmission and an engagement state of the lock-up clutch in accordance with a traveling state of a vehicle. The control device includes a learning control section configured to perform a learning control of the engagement state of the lock-up clutch with respect to the hydraulic pressure command value, an oil vibration sensing section configured to sense oil vibration of a line pressure, and a learning control prohibiting section configured to prohibit the learning control when the oil vibration sensing section senses the oil vibration.Type: GrantFiled: May 27, 2015Date of Patent: April 9, 2019Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Tomoaki Honma, Yuta Suzuki, Itaru Shinohara, Hiroshi Sekiya, Hiromu Ogino
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Patent number: 10125864Abstract: A control device for a lock-up-clutch installed in a torque converter arranged between an engine and an automatic transmission mechanism includes an engagement control means that carries out a calculation to increase an engaging capacity of the lock-up-clutch with the passage of time during an engagement control time in which the torque converter is shifted from a converter condition to a lock-up condition in which the prime mover drives an auxiliary device and in which when, during the control to increase the engaging capacity of the lock-up-clutch, an input torque to the torque converter from the engine is increased due to reduction in load of the auxiliary device, the engagement control means promotes the increase of the engaging capacity of the lock-up-clutch based on the amount of increase of the input torque thereby eliminating undesired pressure shortage that would be induced in the period toward the lock-up condition.Type: GrantFiled: June 22, 2015Date of Patent: November 13, 2018Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Tomoaki Honma, Kohei Kamiya, Yuta Suzuki, Itaru Shinohara, Hiroshi Sekiya, Hiromu Ogino, Yasuhiro Endo, Yuzuru Tohta, Kouki Saitou
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Patent number: 9939063Abstract: A control device for a continuously variable transmission includes: a line pressure generating means configured to generate a line pressure; a pilot valve configured to supply a pilot pressure regulated so as not to exceed a first predetermined pressure when the line pressure exceeds the first predetermined pressure; a control means configured to control solenoid valves by the pilot pressure, and thereby to generate belt clamping forces; an oil vibration sensing means configured to sense an oil vibration; and a line pressure increase means configured to increase the line pressure to be greater than the first predetermined pressure when the oil vibration sensing means senses the oil vibration.Type: GrantFiled: May 27, 2015Date of Patent: April 10, 2018Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Tomoaki Honma, Yuta Suzuki, Itaru Shinohara, Hiroshi Sekiya, Hiromu Ogino
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Publication number: 20170211701Abstract: A control device for a continuously variable transmission includes: a line pressure generating means configured to generate a line pressure; a pilot valve configured to supply a pilot pressure regulated so as not to exceed a first predetermined pressure when the line pressure exceeds the first predetermined pressure; a control means configured to control solenoid valves by the pilot pressure, and thereby to generate belt clamping forces; an oil vibration sensing means configured to sense an oil vibration; and a line pressure increase means configured to increase the line pressure to be greater than the first predetermined pressure when the oil vibration sensing means senses the oil vibration.Type: ApplicationFiled: May 27, 2015Publication date: July 27, 2017Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Tomoaki HONMA, Yuta SUZUKI, Itaru SHINOHARA, Hiroshi SEKIYA, Hiromu OGINO
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Publication number: 20170204970Abstract: A control device for a continuously variable transmission includes: a line pressure generating-section configured to generate a line pressure; a pilot valve configured to supply a pilot pressure regulated so as not to exceed a first predetermined pressure when the line pressure exceeds the first predetermined pressure; a control section configured to generate the clamping forces by controlling the pilot pressure; a line pressure increase section configured to increase the line pressure to be greater than the first predetermined pressure when the control to increase the line pressure is performed when the line pressure is lower than the first predetermined pressure.Type: ApplicationFiled: May 28, 2015Publication date: July 20, 2017Applicants: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Tomoaki HONMA, Yuta SUZUKI, Itaru SHINOHARA, Hiroshi SEKIYA, Hiromu OGINO
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Publication number: 20170204968Abstract: A control device for a lock-up-clutch installed in a torque converter arranged between an engine and an automatic transmission mechanism includes an engagement control means that carries out a calculation to increase an engaging capacity of the lock-up-clutch with the passage of time during an engagement control time in which the torque converter is shifted from a converter condition to a lock-up condition in which the prime mover drives an auxiliary device and in which when, during the control to increase the engaging capacity of the lock-up-clutch, an input torque to the torque converter from the engine is increased due to reduction in load of the auxiliary device, the engagement control means promotes the increase of the engaging capacity of the lock-up-clutch based on the amount of increase of the input torque thereby eliminating undesired pressure shortage that would be induced in the period toward the lock-up condition.Type: ApplicationFiled: June 22, 2015Publication date: July 20, 2017Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Tomoaki HONMA, Kohei KAMIYA, Yuta SUZUKI, Itaru SHINOHARA, Hiroshi SEKIYA, Hiromu OGINO, Yasuhiro ENDO, Yuzuru TOHTA, Kouki SAITOU
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Publication number: 20170197623Abstract: A control device for a continuously variable transmission includes: a lock-up clutch of a torque converter which is arranged to connect and disconnect a power transmission between a power source and the driving wheel; a control section configured to output a hydraulic pressure command value, and to control a transmission gear ratio of the continuously variable transmission and an engagement state of the lock-up clutch in accordance with a traveling state of a vehicle; a learning control section configured to perform a learning control of the engagement state of the lock-up clutch with respect to the control command value; an oil vibration sensing section configured to sense an oil vibration; and a learning control prohibiting section configured to prohibit the learning control when the oil vibration sensing section senses the oil vibration.Type: ApplicationFiled: May 27, 2015Publication date: July 13, 2017Applicants: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Tomoaki HONMA, Yuta SUZUKI, Itaru SHINOHARA, Hiroshi SEKIYA, Hiromu OGINO
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Patent number: 9002601Abstract: In a shift control apparatus of a continuously variable transmission (CVT) configured to steplessly vary a torque, the control apparatus employs an acceleration intention determination section for determining the presence or absence of a driver's acceleration intention, a shift mode setting section for setting a shift-control mode from a normal mode to an acceleration mode in the presence of the driver's acceleration intention, a shift speed setting section for setting a shift speed based on a target transmission ratio and a vehicle speed, and a shift control section for controlling a shift of the CVT. Also provided is a shift speed correction section for correcting the shift speed for an initial downshift in the acceleration mode to a shift speed slower than the shift speed set by the shift speed setting section, only when a demanded degree of the driver's acceleration intention is small.Type: GrantFiled: November 21, 2012Date of Patent: April 7, 2015Assignee: Jatco LtdInventors: Tomoaki Kabe, Nobuhiko Morifuji, Keisuke Ichikawa, Nobuhide Kato, Yuki Ono, Hiromu Ogino, Yukinobu Sakakibara, Hisao Nakanishi, Takahiro Nakata, Mitsuki Ishizuka
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Patent number: 8657720Abstract: A shift control apparatus for a continuously variable transmission includes: a target transmission gear ratio setting section configured to set a target transmission gear ratio with reference to a map based on an accelerator opening degree and a vehicle speed; a shift control section configured to control a shift of the continuously variable transmission based on the target transmission gear ratio; and a downshift restricting section configured to judge whether or not a restriction of the downshift is needed based on at least one of a variation amount of the accelerator opening degree and an accelerator depression speed, and to perform the restriction of the downshift when the downshift restricting section judges that the restriction of the downshift is needed, irrespective of a variation of the accelerator opening degree inputted to the target transmission gear ratio setting section.Type: GrantFiled: December 12, 2012Date of Patent: February 25, 2014Assignee: JATCO LtdInventors: Tomoaki Kabe, Nobuhiko Morifuji, Keisuke Ichikawa, Nobuhide Kato, Yuki Ono, Hiromu Ogino, Yukinobu Sakakibara, Hisao Nakanishi, Takahiro Nakata, Mitsuki Ishizuka
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Patent number: 8617029Abstract: A shift control apparatus for continuously variable transmission includes: a pseudo accelerator opening degree generating section configured to generate a pseudo accelerator opening degree larger than the actual accelerator opening degree when the actual accelerator opening degree is decreased when the judging section judges that the vehicle runs the uphill; the target transmission gear ratio setting section being configured to set the target transmission gear ratio by the pseudo accelerator opening degree when the pseudo accelerator opening degree is inputted, and the shift control section being configured to control the shift toward the target transmission gear ratio set based on the pseudo accelerator opening degree and the vehicle speed when the pseudo accelerator opening degree is generated, and to control the shift toward the target transmission gear ratio set based on the actual accelerator opening degree and the vehicle speed when the pseudo accelerator opening degree is not generated.Type: GrantFiled: December 12, 2012Date of Patent: December 31, 2013Assignee: Jatco LtdInventors: Tomoaki Kabe, Nobuhiko Morifuji, Keisuke Ichikawa, Nobuhide Kato, Yuki Ono, Hiromu Ogino, Yukinobu Sakakibara, Hisao Nakanishi, Takahiro Nakata, Mitsuki Ishizuka