Patents by Inventor Kisaburo Hayakawa
Kisaburo Hayakawa 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: 11198426Abstract: A hybrid vehicle includes a first gear mechanism which transmits the power of the internal combustion engine to the motor generator side, while accelerating the power between the internal combustion engine and the motor generator; a second gear mechanism which transmits the power of the motor generator side to a vehicle drive shaft, while decelerating the power between the motor generator and the vehicle drive shaft; a third gear mechanism which transmits the power of the drive motor side to the vehicle drive shaft, while decelerating the power between the drive motor and the vehicle drive shaft; a clutch mechanism which switches connection and disconnection between the drive shaft of the motor generator and the first gear mechanism or the second gear mechanism; and a control device which controls the clutch mechanism. The motor generator is not connected to both the vehicle drive shaft and the internal combustion engine at the same time at the time of normal traveling.Type: GrantFiled: January 17, 2019Date of Patent: December 14, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kosuke Aiki, Kisaburo Hayakawa, Yoshiaki Ito, Hiroyuki Yamaguchi, Hideto Inagaki, Masaki Okamura
-
Patent number: 10556593Abstract: A series hybrid vehicle is equipped with an engine, a first motor generator, and a second motor generator. The vehicle has a reduction gear that is a first power transmission mechanism for engaging the engine with the first motor generator, a reduction gear that is a second power transmission mechanism for engaging the first motor generator with a vehicle drive shaft, and a clutch that is capable of engaging the first motor generator with one of the two reduction gears in a switching manner. The vehicle further has a transmission that switches between transmission gear ratios and engages the second motor generator with the vehicle drive shaft.Type: GrantFiled: December 4, 2018Date of Patent: February 11, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshiaki Ito, Kosuke Aiki, Kisaburo Hayakawa, Hiroyuki Yamaguchi, Hideto Inagaki, Masaki Okamura
-
Publication number: 20190217853Abstract: A hybrid vehicle includes a first gear mechanism which transmits the power of the internal combustion engine to the motor generator side, while accelerating the power between the internal combustion engine and the motor generator; a second gear mechanism which transmits the power of the motor generator side to a vehicle drive shaft, while decelerating the power between the motor generator and the vehicle drive shaft; a third gear mechanism which transmits the power of the drive motor side to the vehicle drive shaft, while decelerating the power between the drive motor and the vehicle drive shaft; a clutch mechanism which switches connection and disconnection between the drive shaft of the motor generator and the first gear mechanism or the second gear mechanism; and a control device which controls the clutch mechanism. The motor generator is not connected to both the vehicle drive shaft and the internal combustion engine at the same time at the time of normal traveling.Type: ApplicationFiled: January 17, 2019Publication date: July 18, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kosuke AIKI, Kisaburo HAYAKAWA, Yoshiaki ITO, Hiroyuki YAMAGUCHI, Hideto INAGAKI, Masaki OKAMURA
-
Publication number: 20190168761Abstract: A series hybrid vehicle is equipped with an engine, a first motor generator, and a second motor generator. The vehicle has a reduction gear that is a first power transmission mechanism for engaging the engine with the first motor generator, a reduction gear that is a second power transmission mechanism for engaging the first motor generator with a vehicle drive shaft, and a clutch that is capable of engaging the first motor generator with one of the two reduction gears in a switching manner. The vehicle further has a transmission that switches between transmission gear ratios and engages the second motor generator with the vehicle drive shaft.Type: ApplicationFiled: December 4, 2018Publication date: June 6, 2019Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshiaki ITO, Kosuke AIKI, Kisaburo HAYAKAWA, Hiroyuki YAMAGUCHI, Hideto INAGAKI, Masaki OKAMURA
-
Patent number: 8771126Abstract: Assuming that N1 and N2 are the respective numbers of pinion rollers (23, 63); ?1 is the ratio between the inner diameter of a ring roller (22) and the outer diameter of a sun roller (21); and ?2 is the ratio between the inner diameter of a ring roller (62) and the outer diameter of a sun roller (61); and it holds that N1=3, and (?1+1)×(?2+1)?24+16×20.5, in the case where N2=3, then it holds that ?1?0.102×(?1+1)×(?2+1)+1.196, and ?1?min[0.204×(?1+1)×(?2+1)+3.123, 7+4×30.5], and in the case where N2=4, then it holds that ?1?(2?20.5)×(?1+1)×(p2+1)/4?1, and ?1?min[0.185×(?1+1)×(?2+1)+1.320, 7+4×30.5].Type: GrantFiled: June 27, 2011Date of Patent: July 8, 2014Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Yoshihiro Mizuno, Kisaburo Hayakawa, Hiroyuki Nishizawa, Hiroyuki Yamaguchi, Kiyokazu Sunami
-
Publication number: 20130123059Abstract: Assuming that N1 and N2 are the respective numbers of pinion rollers (23, 63); ?1 is the ratio between the inner diameter of a ring roller (22) and the outer diameter of a sun roller (21); and ?2 is the ratio between the inner diameter of a ring roller (62) and the outer diameter of a sun roller (61); and it holds that N1=3, and (?11)×(p21)?24+16×20.5, in the case where N2=3, then it holds that ?1?0.102×(?1+1)×(?2+1)+1.196, and ?1?min[0.204×(?1+1)×(?2+1)+3.123, 7+4×30.5], and in the case where N2=4, then it holds that ?1?(2?20.5)×(?1+1)×(p2+1)/4?1, and ?1?min [0.185×(?1+1)×(?2+1)+1.320, 7+4×30.5].Type: ApplicationFiled: June 27, 2011Publication date: May 16, 2013Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Yoshihiro Mizuno, Kisaburo Hayakawa, Hiroyuki Nishizawa, Hiroyuki Yamaguchi, Kiyokazu Sunami
-
Patent number: 7740556Abstract: A hydraulic control apparatus includes two oil flow control valves (30, 32) each provided with a supply control portion (36, 38, 52, 54) for controlling an oil supply from a pressurized oil source, and a discharge control portion (40, 42, 56, 58) for controlling connection with a discharge passage. One of those oil flow control valves supplies/discharges oil to/from one of hydraulic chambers (22, 24) that are oppositely formed in a hydraulic servo mechanism. An operation direction of the hydraulic servo mechanism is performed by operating one of the oil flow control valves. The other operation direction of the hydraulic servo mechanism is performed by operating the other oil flow control valve.Type: GrantFiled: July 16, 2004Date of Patent: June 22, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yuji Iwase, Masami Sugaya, Hiroyuki Nishizawa, Kisaburo Hayakawa, Masataka Osawa
-
Patent number: 7503869Abstract: A controller determines a target gear ratio from an accelerator opening and a vehicle speed. The controller determines the stroke of a trunnion on the basis of the difference between present inclination and a target inclination, thereby to control stroke by a hydraulic control valve. The stroke is corrected according to input/output disc pushing force.Type: GrantFiled: November 12, 2004Date of Patent: March 17, 2009Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hiroyuki Nishizawa, Kisaburo Hayakawa, Shuzo Sanda, Masanobu Kimura, Masataka Osawa, Yuji Iwase, Naoto Tanaka, Naoki Moriguchi, Masami Sugaya
-
Publication number: 20060174757Abstract: A hydraulic control apparatus includes two oil flow control valves (30, 32) each provided with a supply control portion (36, 38, 52, 54) for controlling an oil supply from a pressurized oil source, and a discharge control portion (40, 42, 56, 58) for controlling connection with a discharge passage. One of those oil flow control valves supplies/discharges oil to/from one of hydraulic chambers (22, 24) that are oppositely formed in a hydraulic servo mechanism. An operation direction of the hydraulic servo mechanism is performed by operating one of the oil flow control valves. The other operation direction of the hydraulic servo mechansim is performed by operating the other oil flow control valve.Type: ApplicationFiled: July 16, 2004Publication date: August 10, 2006Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuji Iwase, Masami Sugaya, Hiroyuki Nishizawa, Kisaburo Hayakawa, Masataka Osawa
-
Patent number: 7032468Abstract: The vehicle weight determination device includes a microcomputer for achieving the vehicle weight determination by obtaining a driving force after filtering based on the speed ratio of the torque converter and obtaining an integrated driving force with the absolute value of the driving force after filtering by using an area method. Similarly, acceleration after filtering is obtained by filtering process of the acceleration and an integrated to obtain an integrated acceleration. The vehicle weight is determined by the integrated driving force divided by the integrated acceleration.Type: GrantFiled: May 21, 2002Date of Patent: April 25, 2006Assignee: Aisin Seiki Kabushiki KaishaInventors: Naoki Yamada, Toshiaki Ishiguro, Hiroaki Kato, Kisaburo Hayakawa, Masataka Osawa, Ryoichi Hibino
-
Publication number: 20050124454Abstract: A controller determines a target gear ratio from an accelerator opening and a vehicle speed. The controller determines the stroke of a trunnion on the basis of the difference between present inclination and a target inclination, thereby to control stroke by a hydraulic control valve. The stroke is corrected according to input/output disc pushing force.Type: ApplicationFiled: November 12, 2004Publication date: June 9, 2005Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroyuki Nishizawa, Kisaburo Hayakawa, Shuzo Sanda, Masanobu Kimura, Masataka Osawa, Yuji Iwase, Naoto Tanaka, Naoki Moriguchi, Masami Sugaya
-
Publication number: 20050000305Abstract: The vehicle weight determination device includes a microcomputer for achieving the vehicle weight determination by obtaining a driving force after filtering based on the speed ratio of the torque converter and obtaining an integrated driving force with the absolute value of the driving force after filtering by using an area method. Similarly, acceleration after filtering is obtained by filtering process of the acceleration and an integrated to obtain an integrated acceleration. The vehicle weight is determined by the integrated driving force divided by the integrated acceleration.Type: ApplicationFiled: May 21, 2002Publication date: January 6, 2005Inventors: Naoki Yamada, Toshiaki Ishiguro, Hiroaki Kato, Kisaburo Hayakawa, Masataka Osawa, Ryoichi Hibino
-
Patent number: 6347269Abstract: To calculate a vehicle mass based on a driving force caused by an engine, running resistance, and vehicle acceleration, influence of gradient resistance is removed. A gross driving force calculating section calculates a gross driving force F of a vehicle by deducting running resistance from a driving force of a vehicle caused by an engine. An acceleration sensor calculates a longitudinal acceleration &agr; of the vehicle. Relationship among a gross driving force F, a longitudinal acceleration &agr;, a vehicle mass M, and road gradient &THgr; can be expressed as (&agr;=F/M−g sin &THgr;). Because the change of gradient contains only a low frequency component, by processing a gross driving force F and an acceleration &agr;, using a high-pass filter with a predetermined cut-off frequency, the influence of the gradient &THgr; can be removed.Type: GrantFiled: July 26, 2000Date of Patent: February 12, 2002Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Kisaburo Hayakawa, Masataka Osawa, Hiroyuki Yoshida, Masuji Oshima
-
Patent number: 5895435Abstract: Apparatus for estimating a drive mode of a motor vehicle desired by an operator of the motor vehicle, including a variable calculating device and a drive mode estimating device, wherein the variable calculating device calculates at least one of drive mode indicating variables such as a drive force of the vehicle desired by the operator upon starting of the vehicle, a maximum rate of increase of the drive force, a maximum deceleration of the vehicle upon operation of a manually operated member for brake application to the vehicle, a coasting run time of the vehicle and a steady run time of the vehicle, and wherein the drive mode estimating device includes a neural network which receives the drive mode indicating variable or variables calculated by the variable calculating device, so that the drive mode estimating device estimates the drive mode of the motor vehicle desired by the operator on the basis of an output of the neural network.Type: GrantFiled: February 28, 1997Date of Patent: April 20, 1999Assignee: Toyota Jidosha Kabushiki KaishaInventors: Takashi Ohta, Yoshio Ito, Yasunari Nakamura, Hideo Tomomatsu, Syoichi Sayo, Kagenori Fukumura, Hiroji Taniguchi, Masuji Oshima, Hiroyuki Yoshida, Kisaburo Hayakawa, Masataka Osawa