Patents by Inventor Shun Minaki
Shun Minaki 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).
-
Patent number: 11041535Abstract: A control apparatus for a synchronous meshing mechanism that is equipped with a gear, a sleeve, a synchronizer ring, and a hydraulic actuator is provided. When it is determined that the sleeve and the gear have been rotationally synchronized with each other in an engagement transition period of the synchronous meshing mechanism, an electronic control unit with which the control apparatus is equipped sets a command pressure for the hydraulic actuator to an intermediate pressure that is lower than a meshing completion pressure. Besides, when meshing has not been completed even after the lapse of a predetermined time from a timing when the command pressure for the hydraulic actuator is set to the intermediate pressure, the electronic control unit sets the command pressure for the hydraulic actuator to the meshing completion pressure.Type: GrantFiled: May 22, 2020Date of Patent: June 22, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ken Jozaki, Takashi Seo, Toshio Suzuki, Hiroki Takeda, Yoshisuke Kametani, Shun Minaki
-
Publication number: 20200408264Abstract: A control apparatus for a synchronous meshing mechanism that is equipped with a gear, a sleeve, a synchronizer ring, and a hydraulic actuator is provided. When it is determined that the sleeve and the gear have been rotationally synchronized with each other in an engagement transition period of the synchronous meshing mechanism, an electronic control unit with which the control apparatus is equipped sets a command pressure for the hydraulic actuator to an intermediate pressure that is lower than a meshing completion pressure. Besides, when meshing has not been completed even after the lapse of a predetermined time from a timing when the command pressure for the hydraulic actuator is set to the intermediate pressure, the electronic control unit sets the command pressure for the hydraulic actuator to the meshing completion pressure.Type: ApplicationFiled: May 22, 2020Publication date: December 31, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Ken JOZAKI, Takashi SEO, Toshio SUZUKI, Hiroki TAKEDA, Yoshisuke KAMETANI, Shun MINAKI
-
Patent number: 9341263Abstract: Vehicle control device of vehicle including lockup clutch configured to directly couple between input/output rotating members of fluid power transmission device transmitting power of engine to automatic transmission, vehicle control device engaging lockup clutch when running state of vehicle in predetermined running state, vehicle control device providing lockup clutch pressure learning control of learning oil pressure of lockup clutch used in start-time lockup slip control in which lockup clutch placed in slip-engaged state toward engaged state at start of vehicle based on rotation speed of engine at time of engagement of lockup clutch, vehicle control device inhibiting engagement of lockup clutch when running state of vehicle in predetermined running state and also in second predetermined running state, vehicle control device engaging lockup clutch after running state of vehicle goes out of second predetermined running state, and providing lockup clutch pressure learning control in engaging process of lockuType: GrantFiled: June 19, 2015Date of Patent: May 17, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Wataru Matsubara, Hiroya Fujiwara, Akira Hino, Shun Minaki, Naoto Tanaka
-
Publication number: 20150369361Abstract: Vehicle control device of vehicle including lockup clutch configured to directly couple between input/output rotating members of fluid power transmission device transmitting power of engine to automatic transmission, vehicle control device engaging lockup clutch when running state of vehicle in predetermined running state, vehicle control device providing lockup clutch pressure learning control of learning oil pressure of lockup clutch used in start-time lockup slip control in which lockup clutch placed in slip-engaged state toward engaged state at start of vehicle based on rotation speed of engine at time of engagement of lockup clutch, vehicle control device inhibiting engagement of lockup clutch when running state of vehicle in predetermined running state and also in second predetermined running state, vehicle control device engaging lockup clutch after running state of vehicle goes out of second predetermined running state, and providing lockup clutch pressure learning control in engaging process of lockuType: ApplicationFiled: June 19, 2015Publication date: December 24, 2015Inventors: Wataru MATSUBARA, Hiroya FUJIWARA, Akira HINO, Shun MINAKI, Naoto TANAKA
-
Patent number: 8046143Abstract: An ECU executes a program including: a step of detecting a turbine revolution speed, a step of detecting an engine torque TE, a step of detecting a speed change ratio, a step of setting a range an enlarged slip region when a slip region enlargement condition is satisfied, and a step of enlarging the slip region toward a lock-up region side (high-load side).Type: GrantFiled: April 17, 2006Date of Patent: October 25, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kazuaki Nakamura, Hiromichi Kimura, Shun Minaki, Koji Oshima, Tomohiro Asami, Takahiro Kondo
-
Patent number: 7769516Abstract: An ECU executes a program including determining whether a mode is a neutral control execution mode, determining whether the mode is a neutral control return mode, detecting a proceeding state of the neutral control return mode when an accelerator is activated during the neutral control return mode, and inhibiting slip start when the mode is in an initial stage of the neutral control return mode.Type: GrantFiled: March 9, 2006Date of Patent: August 3, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Takahiro Kondo, Makoto Nakayashiki, Tomohiro Asami, Shun Minaki
-
Patent number: 7670262Abstract: “Threshold A is substituted in a power-on state, “threshold B”, which is lower than “threshold A”, is substituted in a power-off state, and “threshold C”, which is lower than “threshold B” is substituted during a brake operation, as a rapid deceleration determination threshold. The rotational speed of an output shaft of an automatic transmission and the rapid deceleration determination threshold are compared to determine whether a vehicle is rapidly decelerating. The engagement state of a lock-up clutch is controlled based on whether the vehicle is rapidly decelerating.Type: GrantFiled: April 25, 2008Date of Patent: March 2, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shun Minaki, Koji Oshima
-
Publication number: 20090055063Abstract: An ECU executes a program including: a step (S100) of detecting a turbine revolution speed, a step (S200) of detecting an engine torque TE, a step (S300) of detecting a speed change ratio, a step (S500) of setting a range an enlarged slip region when a slip region enlargement condition is satisfied (YES in S400), and a step (S600) of enlarging the slip region toward a lock-up region side (high-load side).Type: ApplicationFiled: April 17, 2006Publication date: February 26, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazuaki Nakamura, Hiromichi Kimura, Shun Minaki, Koji Oshima, Tomohiro Asami, Takahiro Kondo
-
Publication number: 20080269013Abstract: “Threshold A is substituted in a power-on state, “threshold B”, which is lower than “threshold A”, is substituted in a power-off state, and “threshold C”, which is lower than “threshold B” is substituted during a brake operation, as a rapid deceleration determination threshold. The rotational speed of an output shaft of an automatic transmission and the rapid deceleration determination threshold are compared to determine whether a vehicle is rapidly decelerating. The engagement state of a lock-up clutch is controlled based on whether the vehicle is rapidly decelerating.Type: ApplicationFiled: April 25, 2008Publication date: October 30, 2008Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shun MINAKI, Koji Oshima
-
Publication number: 20080172161Abstract: An ECU executes a program including determining whether a mode is a neutral control execution mode, determining whether the mode is a neutral control return mode, detecting a proceeding state of the neutral control return mode when an accelerator is activated during the neutral control return mode, and inhibiting slip start when the mode is in an initial stage of the neutral control return mode.Type: ApplicationFiled: March 9, 2006Publication date: July 17, 2008Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takahiro Kondo, Makoto Nakayashiki, Tomohiro Asami, Shun Minaki
-
Publication number: 20060237275Abstract: The vehicle start determining unit determines a vehicle starting state based on a vehicle speed and an accelerator pedal press-down degree. When the vehicle starting state is determined, the target slip value determining unit determines a target slip rotational speed based on the actual accelerator pedal press-down degree. In receipt of a signal indicating initiation of the control upon the previous slip control, the running history storing unit stores a change of the vehicle speed over time after the relevant timing, and sets a running history flag to an on state when detecting that the vehicle speed has exceeded a prescribed threshold value. In receipt of the target slip rotational speed and the running history flag, if the running history flag is in the on state, the lock-up clutch control unit carries out the slip control according to the target slip rotational speed.Type: ApplicationFiled: April 17, 2006Publication date: October 26, 2006Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hirofumi Fujita, Hiromichi Kimura, Koji Oshima, Tomohiro Asami, Takahiro Kondo, Shun Minaki