Patents by Inventor Junji Urano
Junji Urano 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: 8028779Abstract: The present invention provides a hybrid vehicle including a first transmission path that transmits a traction of an engine to driving wheels and a second transmission path that transmits a traction of a motor to the driving wheels, and the hybrid vehicle runs by alternatively selecting either the first or second transmission path or in combination thereof. The first transmission path has a first reduction gear ratio that is defined to be smaller than a reduction gear ratio at which a maximum vehicle speed can be achieved by the traction of the engine alone.Type: GrantFiled: June 29, 2007Date of Patent: October 4, 2011Assignee: Honda Motor Co., Ltd.Inventors: Naohisa Morishita, Toshiyuki Yumoto, Kazuyuki Iwata, Kenji Honda, Junji Urano
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Publication number: 20080006467Abstract: The present invention provides a hybrid vehicle including a first transmission path that transmits a traction of an engine to driving wheels and a second transmission path that transmits a traction of a motor to the driving wheels, and the hybrid vehicle runs by alternatively selecting either the first or second transmission path or in combination thereof. The first transmission path has a first reduction gear ratio that is defined to be smaller than a reduction gear ratio at which a maximum vehicle speed can be achieved by the traction of the engine alone.Type: ApplicationFiled: June 29, 2007Publication date: January 10, 2008Inventors: Naohisa Morishita, Toshiyuki Yumoto, Kazuyuki Iwata, Kenji Honda, Junji Urano
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Patent number: 6692388Abstract: A hydraulic controller comprises a structure composed of a separator plate 70 sandwiched between first and second valve bodies 60a and 80a, in which structure, an oil passage 103 connecting a SC shift valve 92 provided upstream and a SC backup valve 94 provided downstream is provided with a choke 75. When the separator plate 70, in which a choke opening 75a is formed, is sandwiched between the first and second valve bodies, the upstream part of the oil passage 103 is in fluid communication with one end of the choke opening 75a while the downstream part of the oil passage 103 is in fluid communication with the other end of the choke opening 75a. In this arrangement, a long narrow room formed by the choke opening 75a sandwiched between the first and second valve bodies comprises the choke 75.Type: GrantFiled: May 15, 2002Date of Patent: February 17, 2004Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Hideo Nirasawa, Katsuyuki Narai, Akihiro Yamaguchi, Junji Urano, Hisashi Kunii
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Patent number: 6503169Abstract: An apparatus for controlling a power transmission device, having a lockup shift valve that changes the operating state and non-operating state of the lockup mechanism, and a regulator valve that is capable of changing the pressure (line pressure) of working oil used to operate a speed changer CVT between a low pressure and a high pressure, wherein changeover between a mode, where the lockup mechanism is operated and the line pressure is set to a low pressure, and a mode, where the lockup mechanism is not operated and the line pressure is set to a high pressure, is carried out by changing the output of ON and OFF signals from the first solenoid valve.Type: GrantFiled: February 27, 2001Date of Patent: January 7, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Shigeji Nakano, Junji Urano, Yoichi Sato
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Publication number: 20020189252Abstract: A hydraulic controller comprises a structure composed of a separator plate 70 sandwiched between first and second valve bodies 60a and 80a, in which structure, an oil passage 103 connecting a SC shift valve 92 provided upstream and a SC backup valve 94 provided downstream is provided with a choke 75. When the separator plate 70, in which a choke opening 75a is formed, is sandwiched between the first and second valve bodies, the upstream part of the oil passage 103 is in fluid communication with one end of the choke opening 75a while the downstream part of the oil passage 103 is in fluid communication with the other end of the choke opening 75a. In this arrangement, a long narrow room formed by the choke opening 75a sandwiched between the first and second valve bodies comprises the choke 75.Type: ApplicationFiled: May 15, 2002Publication date: December 19, 2002Applicant: HONDA GIKEN KOGYO KABUSHIKI KAISHAInventors: Hideo Nirasawa, Katsuyuki Narai, Akihiro Yamaguchi, Junji Urano, Hisashi Kunii
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Patent number: 6461271Abstract: A first side-pressure, that is supplied to cylinder 74 of the drive pulley 71 or to cylinder 78 of the driven pulley 75 as pressure determining the transmission torque capacity of continuously variable transmission mechanism 70, is supplied to a frictional engagement element, where it is used as the working hydraulic fluid pressure. The transmission torque capacity of the frictional engagement element is set to be somewhat lower than the transmission torque capacity of the continuously variable transmission mechanism.Type: GrantFiled: March 22, 2001Date of Patent: October 8, 2002Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Shigeji Nakano, Junji Urano, Yoichi Sato
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Publication number: 20010027143Abstract: A first side-pressure, that is supplied to cylinder 74 of the drive pulley 71 or to cylinder 78 of the driven pulley 75 as pressure determining the transmission torque capacity of continuously variable transmission mechanism 70, is supplied to a frictional engagement element, where it is used as the working hydraulic fluid pressure. The transmission torque capacity of the frictional engagement element is set to be somewhat lower than the transmission torque capacity of the continuously variable transmission mechanism.Type: ApplicationFiled: March 22, 2001Publication date: October 4, 2001Applicant: Honda Giken Kogyo Kabushiki KaishaInventors: Shigeji Nakano, Junji Urano, Yoichi Sato
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Publication number: 20010019984Abstract: The present invention relates to an apparatus for controlling a power transmission device, having a lockup shift valve that changes the operating state and non-operating state of the lockup mechanism, and a regulator valve that is capable of changing the pressure (line pressure) of working oil used to operate a speed changer CVT between a low pressure and a high pressure, wherein changeover between a mode, where the lockup mechanism is operated and the line pressure is set to a low pressure, and a mode, where the lockup mechanism is not operated and the line pressure is set to a high pressure, is carried out by changing the output of ON and OFF signals from the first solenoid valve.Type: ApplicationFiled: February 27, 2001Publication date: September 6, 2001Applicant: Honda Giken Kogyo Kabushiki KaishaInventors: Shigeji Nakano, Junji Urano
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Patent number: 5665023Abstract: A control apparatus for a belt-type continuously variable transmission that has a drive pulley, a driven pulley, a V-belt trained around the drive and driven pulleys, a drive cylinder for varying the pulley width of the drive pulley, and a driven cylinder for varying the pulley width the said driven pulley. A pressure regulator valve produces pulley control pressures supplied to the drive and driven cylinders and a shift valve distributes the pulley control pressures to the drive and driven cylinders for varying the widths of the drive and driven pulleys for speed ratio control. An electric shift control normally controls the shift valve by electric power supplied to solenoid valves but the electric shift control causes the pressures in both the drive cylinder and said driven cylinder to be equal when the electric power is lost.Type: GrantFiled: April 14, 1994Date of Patent: September 9, 1997Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Takashi Aoki, Keiichi Hanyu, Kaoru Kajikawa, Junji Urano