Patents by Inventor Azusa Shimoda
Azusa Shimoda 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: 10808840Abstract: A transmission control device controls a CVT installed in a vehicle. The device has, as modes for the CVT, a CVT mode M1 for changing a transmission gear ratio steplessly based on the operating state of the vehicle, and a stepped transmission mode M2 for changing the transmission gear ratio stepwise based on the operating state of the vehicle. The device includes a transmission mode switching control unit (controller) 12 for controlling switching between the CVT mode M1 and the stepped transmission mode M2 based on an actual accelerator opening. The transmission mode switching control unit (controller) 12 performs switching from the CVT mode M1 to the stepped transmission mode M2, if the actual accelerator opening reaches or exceeds a first threshold value T1 set in a plurality of stages so as to increase stepwise in accordance with an increase in a vehicle speed.Type: GrantFiled: October 10, 2018Date of Patent: October 20, 2020Assignees: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA, JATCO LTDInventors: Noritaka Aoyama, Azusa Shimoda, Masataka Ohtsuka, Ken Hirashita, Nobuhiko Morifuji, Mitsuki Ishizuka, Hiromasa Masuda, Yukinobu Sakakibara
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Publication number: 20200300357Abstract: A transmission control device controls a CVT installed in a vehicle. The device has, as modes for the CVT, a CVT mode M1 for changing a transmission gear ratio steplessly based on the operating state of the vehicle, and a stepped transmission mode M2 for changing the transmission gear ratio stepwise based on the operating state of the vehicle. The device includes a transmission mode switching control unit (controller) 12 for controlling switching between the CVT mode M1 and the stepped transmission mode M2 based on an actual accelerator opening. The transmission mode switching control unit (controller) 12 performs switching from the CVT mode M1 to the stepped transmission mode M2, if the actual accelerator opening reaches or exceeds a first threshold value T1 set in a plurality of stages so as to increase stepwise in accordance with an increase in a vehicle speed.Type: ApplicationFiled: October 10, 2018Publication date: September 24, 2020Applicants: Mitsubishi Jidosha Kogyo Kabushiki Kaisha, JATCO LtdInventors: Noritaka AOYAMA, Azusa SHIMODA, Masataka OHTSUKA, Ken HIRASHITA, Nobuhiko MORIFUJI, Mitsuki ISHIZUKA, Hiromasa MASUDA, Yukinobu SAKAKIBARA
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Patent number: 10071737Abstract: There is provided with an automatic transmission (2) having a clutch (32) and a brake device (6) which holds a brake force during a stop of an engine (1). There is provided with an engine control section (11) which performs an automatic stop of the engine and a re-start of the engine and a release control section (14) which releases a holding of the brake force during the re-start of the engine. The release control section (14) releases the holding of the brake force when an engagement state of the clutch (32) is a predetermined state in case where an accelerator off state occurs until the engagement state of the clutch (32) becomes the predetermined state and releases the holding of the brake force when the engagement state of the clutch (32) is an engagement state weaker than the predetermined state, during a re-start of the engine (1).Type: GrantFiled: January 29, 2015Date of Patent: September 11, 2018Assignee: JATCO LtdInventors: Noritaka Aoyama, Azusa Shimoda, Yuki Ono, Tomoaki Kabe
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Publication number: 20160339918Abstract: There is provided with an automatic transmission (2) having a clutch (32) and a brake device (6) which holds a brake force during a stop of an engine (1). There is provided with an engine control section (11) which performs an automatic stop of the engine and a re-start of the engine and a release control section (14) which releases a holding of the brake force during the re-start of the engine. The release control section (14) releases the holding of the brake force when an engagement state of the clutch (32) is a predetermined state in case where an accelerator off state occurs until the engagement state of the clutch (32) becomes the predetermined state and releases the holding of the brake force when the engagement state of the clutch (32) is an engagement state weaker than the predetermined state, during a re-start of the engine (1).Type: ApplicationFiled: January 29, 2015Publication date: November 24, 2016Applicant: JATCO LtdInventors: Noritaka AOYAMA, Azusa SHIMODA, Yuki ONO, Tomoaki KABE
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Patent number: 7744505Abstract: A hydraulic pressure control device is provided that that controls hydraulic pressure of a clutch supplying torque to a continuously variable transmission while the vehicle is stopped and in a running range. The hydraulic pressure control device has an control section that estimates a clutch engagement hydraulic pressure for changing the clutch from an engaged state to a disengaged state based the hydraulic fluid pressure acting on the clutch during the stopping of the rotational movement of a primary pulley of the continuously variable transmission, and then controls regulation of the hydraulic pressure to the clutch from an engaged state to a disengaged state, when the vehicle is stopped and in the running range, so that the torque from the engine does not rotate a secondary pulley of the continuously variable transmission.Type: GrantFiled: November 16, 2007Date of Patent: June 29, 2010Assignee: JATCO LtdInventors: Hiroyasu Tanaka, Hideshi Wakayama, Shoichi Sekiguchi, Katsumi Doihara, Hideaki Sasaki, Azusa Shimoda, Naohiro Hoshi, Tatsuya Ozone, Toshio Saitou, Koji Dohi
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Publication number: 20080125284Abstract: A hydraulic pressure control device is provided that that controls hydraulic pressure of a clutch supplying torque to a continuously variable transmission while the vehicle is stopped and in a running range. The hydraulic pressure control device has an control section that estimates a clutch engagement hydraulic pressure for changing the clutch from an engaged state to a disengaged state based the hydraulic fluid pressure acting on the clutch during the stopping of the rotational movement of a primary pulley of the continuously variable transmission, and then controls regulation of the hydraulic pressure to the clutch from an engaged state to a disengaged state, when the vehicle is stopped and in the running range, so that the torque from the engine does not rotate a secondary pulley of the continuously variable transmission.Type: ApplicationFiled: November 16, 2007Publication date: May 29, 2008Applicant: JATCO LTDInventors: Hiroyasu TANAKA, Hideshi WAKAYAMA, Shoichi SEKIGUCHI, Katsumi DOIHARA, Hideaki SASAKI, Azusa SHIMODA, Naohiro HOSHI, Tatsuya OZONE, Toshio SAITOU, Koji DOHI
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Patent number: 7338406Abstract: In shift control apparatus and method for a belt-type continuously variable transmission, a shift ratio between the primary pulley and the secondary pulley is controlled, a shift speed is detected, the shift speed being a variation quantity of the shift ratio per unit of time; and an advance of the shift ratio control is suppressed to suppress the shift speed when a magnitude of the shift speed is equal to or larger than a predetermined value and a suppression quantity is set to suppress the advance of the shift ratio control so as to suppress the shift speed.Type: GrantFiled: March 14, 2005Date of Patent: March 4, 2008Assignee: Jatco LtdInventor: Azusa Shimoda
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Publication number: 20050215393Abstract: In shift control apparatus and method for a belt-type continuously variable transmission, a shift ratio between the primary pulley and the secondary pulley is controlled, a shift speed is detected, the shift speed being a variation quantity of the shift ratio per unit of time; and an advance of the shift ratio control is suppressed to suppress the shift speed when a magnitude of the shift speed is equal to or larger than a predetermined value and a suppression quantity is set to suppress the advance of the shift ratio control so as to suppress the shift speed.Type: ApplicationFiled: March 14, 2005Publication date: September 29, 2005Inventor: Azusa Shimoda