Patents by Inventor Yoshiharu Harada
Yoshiharu Harada 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: 7396315Abstract: An ECT_ECU executes a program including the steps of: when the vehicle is coasting, increasing at a predetermined variation rate an electrical load attributed to an alternator; and if the transmission has downshifted, reducing the electrical load attributed to alternator.Type: GrantFiled: September 20, 2005Date of Patent: July 8, 2008Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroyuki Ogawa, Yoshiharu Harada, Atsushi Yuki
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Publication number: 20070287595Abstract: A deceleration control device for a vehicle equipped with an automatic transmission capable of changing the gear ratio by shift operation of a driver, the control device controlling the load of a brake actuator or engine (S106) so that the vehicle is decelerated, when the driver performs shift operation (YES in S100), under the conditions that it is determined that the driver has the intention to decelerate (YES in S102) and the automatic transmission is not downshifted (NO in S104).Type: ApplicationFiled: August 3, 2005Publication date: December 13, 2007Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yusushi Kobiki, Yoshiharu Harada, Motoaki Kamimura
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Patent number: 7258649Abstract: An automatic shift control is executed in an automatic transmission with 5 shift speeds of range hold type in the highest gear stage of a shift range at the manual shift mode. Upon selection of a shift mode from the automatic shift mode to the manual shift mode, the shift range at the manual shift mode is selected in accordance with the vehicle speed detected at the automatic shift mode. If the vehicle speed is in the low-speed range, the shift range 3 is selected. If the vehicle speed is in the medium-speed range, the shift range 4 is selected. If the vehicle speed is in the high-speed range, the shift range 5 is selected.Type: GrantFiled: September 22, 2005Date of Patent: August 21, 2007Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hitoshi Matsunaga, Yoshiharu Harada
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Patent number: 7194348Abstract: A high acceleration time shift control apparatus and method for a vehicle is provided. The high acceleration time shift control apparatus includes a transmission which achieves plural shift speeds whose gear ratios are different from each other; and a high acceleration time upshifting control device which changes a shift speed of the transmission to a higher speed based on a predetermined determination rotational speed such that an input rotational speed of the transmission substantially reaches a target maximum rotational speed when a request for high acceleration is made by a driver.Type: GrantFiled: December 31, 2003Date of Patent: March 20, 2007Assignee: Toyota Jidosha Kabushiki KaishaInventors: Masumi Wada, Yoshiharu Harada, Masayasu Mizobuchi, Naoyuki Sakamoto
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Publication number: 20060231011Abstract: A gear position display device includes a transmission having a plurality of gear positions, a speed-changing control portion outputting a speed-changing instruction, a display portion displaying a gear position of the transmission, and a detection portion detecting a speed-changing state of a gear position based on the speed-changing instruction, wherein a gear position based on the speed-changing instruction from the speed-changing control portion is displayed after the detection portion confirms actual starting of speed-changing.Type: ApplicationFiled: March 15, 2006Publication date: October 19, 2006Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Motoaki Kamimura, Yasushi Kobiki, Yoshiharu Harada, Akio Murasugi
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Publication number: 20060149433Abstract: A failure determination threshold value HSH used for making a failure determination for a control apparatus, for example, a lock-up clutch (26) by failure determining means (116) is corrected by failure determination threshold value correcting means (114) based on a continuation quantity qNG, for example, a duration tNG, of an operation state in which a predetermined failure precondition for the control apparatus mounted on a vehicle is satisfied. Therefore, a failure determination is performed by the failure determining means (116) using the failure determination threshold value HSH obtained in consideration of individual differences such as variations between vehicles. As a result, it is possible to prevent an erroneous determination regarding a failure, and to improve sensitivity of a failure determination.Type: ApplicationFiled: April 21, 2004Publication date: July 6, 2006Inventors: Hideaki Otsubo, Toshinari Suzuki, Tooru Matsubara, Tadasu Tomohiro, Masato Kaigawa, Yoshiharu Harada, Masashi Ono
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Publication number: 20060111220Abstract: An ECT_ECU executes a program including the steps of: when the vehicle is coasting, increasing at a predetermined variation rate an electrical load attributed to an alternator; and if the transmission has downshifted, reducing the electrical load attributed to alternator.Type: ApplicationFiled: September 20, 2005Publication date: May 25, 2006Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroyuki Ogawa, Yoshiharu Harada, Atsushi Yuki
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Patent number: 7001307Abstract: An automatic shift control is executed in an automatic transmission with 5 shift speeds of range hold type in the highest gear stage of a shift range at the manual shift mode. Upon selection of a shift mode from the automatic shift mode to the manual shift mode, the shift range at the manual shift mode is selected in accordance with the vehicle speed detected at the automatic shift mode. If the vehicle speed is in the low-speed range, the shift range 3 is selected. If the vehicle speed is in the medium-speed range, the shift range 4 is selected. If the vehicle speed is in t he high-speed range, the shift range 5 is selected.Type: GrantFiled: June 2, 2003Date of Patent: February 21, 2006Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hitoshi Matsunaga, Yoshiharu Harada
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Publication number: 20060014610Abstract: An automatic shift control is executed in an automatic transmission with 5 shift speeds of range hold type in the highest gear stage of a shift range at the manual shift mode. Upon selection of a shift mode from the automatic shift mode to the manual shift mode, the shift range at the manual shift mode is selected in accordance with the vehicle speed detected at the automatic shift mode. If the vehicle speed is in the low-speed range, the shift range 3 is selected. If the vehicle speed is in the medium-speed range, the shift range 4 is selected. If the vehicle speed is in the high-speed range, the shift range 5 is selected.Type: ApplicationFiled: September 22, 2005Publication date: January 19, 2006Applicant: Toyota Jidosha Kabushiki KaishaInventors: Hitoshi Matsunaga, Yoshiharu Harada
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Patent number: 6941210Abstract: An apparatus for controlling ignition timing during a shift in a vehicular automatic transmission is provided that is capable of suppressing shift shock in the event that input torque of the automatic transmission is affected by external changes, such as changes in fuel and air pressure and the like, by adjusting immediately to those changes. This control apparatus is provided with an ignition timing controller that controls an ignition timing retard amount; a calculator that calculates a basic retard amount; a detector that detects an engine retard amount; a determinator that determines a retard correction value based on a shift mode of the automatic transmission and the like; and a corrector that corrects the ignition timing retard amount of the controller based on the retard correction value, the basic retard amount, and the engine retard amount.Type: GrantFiled: September 11, 2003Date of Patent: September 6, 2005Assignee: Toyota Jidosha Kabushiki KaishaInventors: Takahiro Kondo, Toshimitsu Sato, Hisanori Nomoto, Naoyuki Sakamoto, Yoshiharu Harada, Toshio Sugimura, Masayasu Mizobuchi, Ryuji Imai
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Patent number: 6843756Abstract: In a vehicle in which a moderate throttle opening degree control of maintaining a degree of throttle opening that is less than a degree of throttle opening that corresponds to an accelerator operation is performed for a predetermined period following a beginning of the accelerator operation, if it is determined that a clutch-to-clutch downshift judgment has been made, the reduction of the engaging pressure of a disengage-side friction engagement device is restrained until it is determined that the moderate throttle opening degree control has ended. Therefore, even if the turbine torque is returned to a normal value at the end of the moderate throttle opening degree control, insufficient engaging torque is avoided, and the takeover of engaging torque for the clutch-to-clutch downshift is smoothly performed while the turbine torque is stable. Hence, occurrence of a shock related to the end of the moderate throttle opening degree control is suitably prevented.Type: GrantFiled: August 13, 2003Date of Patent: January 18, 2005Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Aw Co., Ltd.Inventors: Toshimitsu Sato, Hisanori Nomoto, Naoyuki Sakamoto, Toshio Sugimura, Hiromichi Kimura, Yoshiharu Harada, Noboru Shibata
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Publication number: 20040153232Abstract: A high acceleration time shift control apparatus and method for a vehicle is provided. The high acceleration time shift control apparatus includes a transmission which achieves plural shift speeds whose gear ratios are different from each other; and a high acceleration time upshifting control device which changes a shift speed of the transmission to a higher speed based on a predetermined determination rotational speed such that an input rotational speed of the transmission substantially reaches a target maximum rotational speed when a request for high acceleration is made by a driver.Type: ApplicationFiled: December 31, 2003Publication date: August 5, 2004Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masumi Wada, Yoshiharu Harada, Masayasu Mizobuchi, Naoyuki Sakamoto
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Publication number: 20040063540Abstract: An apparatus for controlling ignition timing during a shift in a vehicular automatic transmission is provided that is capable of suppressing shift shock in the event that input torque of the automatic transmission is affected by external changes, such as changes in fuel and air pressure and the like, by adjusting immediately to those changes. This control apparatus is provided with an ignition timing controller that controls an ignition timing retard amount; a calculator that calculates a basic retard amount; a detector that detects an engine retard amount; a determinator that determines a retard correction value based on a shift mode of the automatic transmission and the like; and a corrector that corrects the ignition timing retard amount of the controller based on the retard correction value, the basic retard amount, and the engine retard amount.Type: ApplicationFiled: September 11, 2003Publication date: April 1, 2004Applicant: Toyota Jidosha Kabushiki KaishaInventors: Takahiro Kondo, Toshimitsu Sato, Hisanori Nomoto, Naoyuki Sakamoto, Yoshiharu Harada, Toshio Sugimura, Masayasu Mizobuchi, Ryuji Imai
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Publication number: 20040043867Abstract: In a vehicle in which a moderate throttle opening degree control of maintaining a degree of throttle opening that is less than a degree of throttle opening that corresponds to an accelerator operation is performed for a predetermined period following a beginning of the accelerator operation, if it is determined that a clutch-to-clutch downshift judgment has been made, the reduction of the engaging pressure of a disengage-side friction engagement device is restrained until it is determined that the moderate throttle opening degree control has ended. Therefore, even if the turbine torque is returned to a normal value at the end of the moderate throttle opening degree control, insufficient engaging torque is avoided, and the takeover of engaging torque for the clutch-to-clutch downshift is smoothly performed while the turbine torque is stable. Hence, occurrence of a shock related to the end of the moderate throttle opening degree control is suitably prevented.Type: ApplicationFiled: August 13, 2003Publication date: March 4, 2004Applicants: Toyota Jidosha Kabushiki Kaisha, AISIN AW CO., LTD.Inventors: Toshimitsu Sato, Hisanori Nomoto, Naoyuki Sakamoto, Toshio Sugimura, Hiromichi Kimura, Yoshiharu Harada, Noboru Shibata
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Publication number: 20030232680Abstract: An automatic shift control is executed in an automatic transmission with 5 shift speeds of range hold type in the highest gear stage of a shift range at the manual shift mode. Upon selection of a shift mode from the automatic shift mode to the manual shift mode, the shift range at the manual shift mode is selected in accordance with the vehicle speed detected at the automatic shift mode. If the vehicle speed is in the low-speed range, the shift range 3 is selected. If the vehicle speed is in the medium-speed range, the shift range 4 is selected. If the vehicle speed is in the high-speed range, the shift range 5 is selected.Type: ApplicationFiled: June 2, 2003Publication date: December 18, 2003Applicant: Toyota Jidosha Kabushiki KaishaInventors: Hitoshi Matsunaga, Yoshiharu Harada
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Patent number: 6434006Abstract: A semiconductor device has a case, a printed circuit board, a fin, and a ceramic substrate mounting a semiconductor element thereon. The case contains the printed circuit board, the ceramic substrate and the fin. The fin and the case radiate heat transmitted from the ceramic substrate. The fin has protrusions on a contact face facing a contact face of the case. The fin contacts the case though the protrusions when the fin is fixed to the case. The protrusions serve as heat radiating path.Type: GrantFiled: May 2, 2001Date of Patent: August 13, 2002Assignee: Denso CorporationInventors: Akihiro Fukatsu, Kan Kinouchi, Mitsuhiro Saito, Yoshiharu Harada
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Publication number: 20020021553Abstract: A semiconductor device has a case, a printed circuit board, a fin, and a ceramic substrate mounting a semiconductor element thereon. The case contains the printed circuit board, the ceramic substrate and the fin. The fin and the case radiate heat transmitted from the ceramic substrate. The fin has protrusions on a contact face facing a contact face of the case. The fin contacts the case though the protrusions when the fin is fixed to the case. The protrusions serve as heat radiating path.Type: ApplicationFiled: May 2, 2001Publication date: February 21, 2002Inventors: Akihiro Fukatsu, Kan Kinouchi, Mitsuhiro Saito, Yoshiharu Harada
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Patent number: 5807204Abstract: An apparatus for controlling a lock-up clutch for direct connection of an engine and an automatic transmission of a motor vehicle, the apparatus including a slip control device for selectively placing said lock-up clutch in one of a fully released state, a fully engaged state, and a partially engaged state, an uphill road detecting device for detecting that a road on which the motor vehicle is running is an uphill road; and a slip control inhibiting device for inhibiting the slip control device from placing the lock-up clutch in the fully or partially engaged state, if the uphill road is detected by the uphill road detecting device, so that undesirable repeated switching of the clutch between the fully released state and the fully or partially engaged state during uphill road running of the vehicle is prevented.Type: GrantFiled: August 23, 1996Date of Patent: September 15, 1998Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kazuyuki Shiiba, Tooru Matsubara, Yoshiharu Harada, Kunihiro Iwatsuki
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Patent number: 5176039Abstract: An automatic transmission with a reverse inhibit feedback passage between front and rear oil sumps. The transmission includes a case, a passage in the case for returning oil to the front sump from the rear sump and a flap valve for allowing the flow from rear sump to front sump while inhibiting oil flow in the reverse direction.Type: GrantFiled: November 5, 1991Date of Patent: January 5, 1993Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Osamu Takeuchi, Yoshikazu Sakaguchi, Takahiro Yamashita, Akira Hoshino, Yutaka Taga, Yasuo Hojo, Yoshiharu Harada
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Patent number: 4945482Abstract: A transmission control system for controlling a transmission. The system has a main transmission with a speed changing mechanism and an output shaft, a substransmission connected to the output shaft, and a control system for receiving outputs from a number of sensors which sense the running state of the vehicle. The control system itself has two outputs, there being two separate hydraulic controls connected to the two system outputs, respectively. The two hydraulic controls control the speed changing mechanisms of the main and subtransmissions, respectively. Also provided is a hydraulic pressure source which supplies a working fluid to the two hydraulic controls. The control system determines whether the main and subtransmissions are in a transient period of the speed changing operation and, as long as one of the two transmissions is in the transient period, inhibits the speed changing operation of the other transmission.Type: GrantFiled: October 12, 1988Date of Patent: July 31, 1990Assignees: Aisin-Warner Limited, Toyota Jidosha Kabushiki KaishaInventors: Seiichi Nishikawa, Yoshiharu Harada, Kagenori Fukumura, Yoichi Hayakawa, Masao Kawai