Patents by Inventor Kenichi Ooshima
Kenichi Ooshima 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: 11359717Abstract: A select control device for an automatic transmission includes a select lever and a controller. The select lever is configured to select a range position in response to a select operation by a driver. The controller is configured to, when a first select operation from a first travel range position to a non-travel range position is performed, perform pressure release control that decreases at a prescribed descending gradient an engagement capacity of a starting clutch that is engaged in the first travel range position. The controller has a select hydraulic pressure control unit configured to continue the pressure release control during a second select operation from a second travel range position that is different from the first travel range position to the non-travel range position after the first select operation.Type: GrantFiled: July 27, 2017Date of Patent: June 14, 2022Assignees: Jatco Ltd., NISSAN MOTOR CO., LTD.Inventor: Kenichi Ooshima
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Patent number: 10569661Abstract: In a specific state where an electric vehicle is in a stop state and a creep torque is generate in an electric motor (2), when a shift range is switched from a traveling range to a non-traveling range, a motor control section (10B) performs a torque decrease control to stepwisely decrease the creep torque of the electric motor (2), and an automatic transmission control device (30) performs a disengagement control to gradually disengage the frictional engagement element of the automatic transmission (3).Type: GrantFiled: November 15, 2016Date of Patent: February 25, 2020Assignee: JATCO LTDInventors: Tomoo Mochizuki, Kenichi Ooshima, Hiroshi Miyazaki, Yuji Torizawa, Hiroki Matsui, Daisuke Nakagawa, Takefumi Suzuki
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Publication number: 20190271389Abstract: A select control device for an automatic transmission includes a select lever and a controller. The select lever is configured to select a range position in response to a select operation by a driver. The controller is configured to, when a first select operation from a first travel range position to a non-travel range position is performed, perform pressure release control that decreases at a prescribed descending gradient an engagement capacity of a starting clutch that is engaged in the first travel range position. The controller has a select hydraulic pressure control unit configured to continue the pressure release control during a second select operation from a second travel range position that is different from the first travel range position to the non-travel range position after the first select operation.Type: ApplicationFiled: July 27, 2017Publication date: September 5, 2019Inventor: Kenichi OOSHIMA
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Publication number: 20180264973Abstract: In a specific state where an electric vehicle is in a stop state and a creep torque is generate in an electric motor (2), when a shift range is switched from a traveling range to a non-traveling range, a motor control section (10B) performs a torque decrease control to stepwisely decrease the creep torque of the electric motor (2), and an automatic transmission control device (30) performs a disengagement control to gradually disengage the frictional engagement element of the automatic transmission (3).Type: ApplicationFiled: November 15, 2016Publication date: September 20, 2018Applicant: JATCO LtdInventors: Tomoo MOCHIZUKI, Kenichi OOSHIMA, Hiroshi MIYAZAKI, Yuji TORIZAWA, Hiroki MATSUI, Daisuke NAKAGAWA, Takefumi SUZUKI
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Patent number: 9897202Abstract: A temperature warning method of a friction element for issuing a warning depending on temperature of the friction element arranged between a power source and a driving wheel, includes issuing the warning when the temperature of the friction element exceeds an upper limit temperature, and making a period of time, from when the temperature of the friction element exceeds the upper limit temperature until when the warning is issued, longer when the temperature of the friction element exceeds the upper limit temperature for a first time than when the temperature of the friction element exceeds the upper limit temperature for a second or subsequent time.Type: GrantFiled: February 12, 2014Date of Patent: February 20, 2018Assignee: NISSAN MOTOR CO., LTD.Inventors: Kenichi Ooshima, Takeshi Yamamoto, Hidetoshi Tsukidate
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Patent number: 9511762Abstract: There is provided a control apparatus for an automatic transmission AT into which driving forces from driving sources including an engine Eng and a motor/generator MG are inputted. The control apparatus includes: a second brake B2 engaged in a D range; an engagement start determining section (steps S2?S3?S4); and a determination inhibit section (steps S2?S5?S6). The engagement start determining section determines that second brake B2 has started the engagement in a case where a load of the motor/generator MG is increased by a predetermined quantity during the revolution number control and when the D range is selected and second brake B2 in the release state is engaged. The determination inhibit section inhibits the engagement start determination in a case where a switching from an HEV mode to an EV mode occurs.Type: GrantFiled: November 14, 2013Date of Patent: December 6, 2016Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Kenichi Ooshima, Hiroki Matsui
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Publication number: 20160076644Abstract: A temperature warning method of a friction element for issuing a warning depending on temperature of the friction element arranged between a power source and a driving wheel, includes issuing the warning when the temperature of the friction element exceeds an upper limit temperature, and making a period of time, from when the temperature of the friction element exceeds the upper limit temperature until when the warning is issued, longer when the temperature of the friction element exceeds the upper limit temperature for a first time than when the temperature of the friction element exceeds the upper limit temperature for a second or subsequent time.Type: ApplicationFiled: February 12, 2014Publication date: March 17, 2016Applicant: Nissan Motor Co., Ltd.Inventors: Kenichi Ooshima, Takeshi Yamamoto, Hidetoshi Tsukidate
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Publication number: 20150360682Abstract: There is provided a control apparatus for an automatic transmission AT into which driving forces from driving sources including an engine Eng and a motor/generator MG are inputted. The control apparatus includes: a second brake B2 engaged in a D range; an engagement start determining section (steps S2?S3?S4); and a determination inhibit section (steps S2?S5?S6). The engagement start determining section determines that second brake B2 has started the engagement in a case where a load of the motor/generator MG is increased by a predetermined quantity during the revolution number control and when the D range is selected and second brake B2 in the release state is engaged. The determination inhibit section inhibits the engagement start determination in a case where a switching from an HEV mode to an EV mode occurs.Type: ApplicationFiled: November 14, 2013Publication date: December 17, 2015Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Kenichi OOSHIMA, Hiroki MATSUI
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Patent number: 6991583Abstract: A system for controlling a torque reduction at shifting for an automatic transmission is provided with actual gear-ratio detecting means for detecting an actual gear ratio out of input rotation and output rotation of the automatic transmission, and torque-reduction amount computing means for calculating a torque-reduction amount out of a torque-reduction set gain set previously, which is a rate of change of the torque-reduction amount with respect to a change in gear ratio, and the detected actual gear ratio. With this, the start and completion timings of torque-reduction control can be optimized to prevent elongation of shifting. This results in enhancement in the shift quality and in the endurance reliability of a friction material for shifting.Type: GrantFiled: September 27, 2002Date of Patent: January 31, 2006Assignee: Jatco LTDInventors: Yuuji Saitou, Kenichi Ooshima, Ikuo Hirose, Masato Tanaka
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Publication number: 20050242754Abstract: In a CRT-based projection display apparatus that displays on a screen video images displayed on three CRTs for red, green, and blue respectively, by projecting the video images against a screen so that the video images are enlarged and synthesized, a deflecting yoke and a velocity modulating coil are attached to a neck portion of each CRT. Furthermore, a cylindrical magnetic shield is arranged so as to cover a coil portion of the velocity modulating coil and a cathode of the CRT.Type: ApplicationFiled: July 16, 2003Publication date: November 3, 2005Applicant: Kabushiki Kaisha ToshibaInventor: Kenichi Ooshima
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Publication number: 20040235617Abstract: A system for controlling a torque reduction at shifting for an automatic transmission is provided with actual gear-ratio detecting means for detecting an actual gear ratio out of input rotation and output rotation of the automatic transmission, and torque-reduction amount computing means for calculating a torque-reduction amount out of a torque-reduction set gain set previously, which is a rate of change of the torque-reduction amount with respect to a change in gear ratio, and the detected actual gear ratio. With this, the start and completion timings of torque-reduction control can be optimized to prevent elongation of shifting. This results in enhancement in the shift quality and in the endurance reliability of a friction material for shifting.Type: ApplicationFiled: March 18, 2004Publication date: November 25, 2004Inventors: Yuuji Saitou, Kenichi Ooshima, Ikuo Hirose, Masato Tanaka