Patents by Inventor Daiki Sato

Daiki Sato 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).

  • Publication number: 20140290225
    Abstract: A control apparatus for a hybrid vehicle includes an engine, an exhaust gas purification catalyst, a first motor-generator, an output section, a differential mechanism, a second motor-generator, and a controller. The output section is configured to transfer torque to driving wheels of the hybrid vehicle. The differential mechanism is configured to distribute the torque from the engine to the first motor-generator and the output section. The second motor-generator is connected to the output section through gears. The controller is configured to: (a) execute a temporarily changing the air-fuel ratio of the engine to a rich side as a rich spike operation when a specified condition is satisfied, and (b) set the specified condition so that the rich spike operation is easily executed as a motor torque of the second motor-generator increases.
    Type: Application
    Filed: March 24, 2014
    Publication date: October 2, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daiki SATO, Tetsuo HORI
  • Publication number: 20130316871
    Abstract: It is provided a control device of a vehicle drive device having an electric motor connected via an inverter to an electric-motor power source, an inverter smoothing capacitor connected to the inverter of the electric-motor power source side thereof, and a transmission making up a portion of a power transmission path between the electric motor and drive wheels, the control device being configured to make an output torque of the electric motor smaller as the rotation speed of the electric motor being higher, and to make a gradient of an output torque reduced amount of the electric motor larger as the rotation speed of the electric motor being higher if a rotation speed of the electric motor rises at the time of upshift of the transmission higher than a rotation speed before the shift.
    Type: Application
    Filed: February 2, 2011
    Publication date: November 28, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuyuki Shiiba, Takeshi Kanayama, Taiyo Uejima, Daiki Sato
  • Publication number: 20130239559
    Abstract: A pump motor of a hydraulic hybrid system also serves as a pump to supply hydraulic oil or lubricating oil to a power train, thus enabling elimination of an oil pump provided in the power train and hence reductions in the number of parts and cost, and, in addition, an existing oil pan provided in the power train and the like are utilized for the hydraulic hybrid system, which in turn enables achieving further reductions in the number of parts and cost. Moreover, when idle-reduction control is performed on an engine, during engine's stopped conditions, the pump motor can be driven as a motor by hydraulic pressure accumulated in an accumulator to start the engine and supply the hydraulic pressure to a transmission, thus eliminating a need to provide a motor-driven oil pump for the idle-reduction control and hence enabling a further reduction in cost.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 19, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Seiichiro Ishikawa, Yasunari Kimura, Masashi Kato, Daiki Sato, Yuki Shibahata
  • Publication number: 20130166131
    Abstract: Providing a control apparatus for a vehicular drive system, which is configured to implement a torque reduction control during a shifting action of an automatic transmission, and which permits reduction of the size and cost of an electric circuit including a smoothing capacitor. An electricity-generation-amount-variation restricting region A01 is predetermined such that a point of a vehicle running state lies in the electricity-generation-amount-variation restricting region A01 prior to a moment of determination to perform a shifting action of the automatic transmission, and electricity-generation-amount-variation restricting means 96 implements an electricity-generation-amount-variation restricting control to restrict a rate of increase of a total amount of an electric energy generated by first and second electric motors MG1 and MG2, to a predetermined upper limit value LTGN, when the point of the vehicle running state has moved into the electricity-generation-amount-variation restricting region A01.
    Type: Application
    Filed: September 7, 2010
    Publication date: June 27, 2013
    Inventors: Kazuyuki Shiiba, Takeshi Kanayama, Talyo Uejima, Daiki Sato
  • Publication number: 20120310460
    Abstract: It is provided a control apparatus for a vehicle provided with an electric motor power source, an inverter, an electric motor, an inverter smoothing capacitor, and a step-variable automatic transmission, the control apparatus being configured to implement a torque reduction control, and to implement a torque reduction limitation control to limit reduction of an output torque of the electric motor to within a range in which a terminal voltage of the inverter smoothing capacitor will not exceed a predetermined withstanding voltage of the inverter and to limit the reduction of the output torque by limiting an amount of change of the output torque per unit time during the reduction of the output torque in the torque reduction control, to within a predetermined torque reduction rate limiting range, and wherein the torque reduction rate limiting range is determined upon initiation of a shifting action of the automatic transmission.
    Type: Application
    Filed: June 25, 2012
    Publication date: December 6, 2012
    Inventors: Daiki SATO, Taiyo Uejima, Kazuyuki Shiiba, Norihiro Yamamura
  • Publication number: 20120237362
    Abstract: A liquid pressure circuit is provided in which connecting an accumulator (22) to a high pressure liquid path (Lh) by opening a cut-off valve (24a) and connecting a intake liquid path (Li) to the high pressure liquid path (Lh) by means of a switch valve (24b) enables a pump/motor (M) to be operated as a motor by liquid stored under pressure in the accumulator (22), connecting the accumulator (22) to the high pressure liquid path (Lh) by opening the cut-off valve (24a) and connecting the intake liquid path (Li) to a low pressure liquid path (Ll) by means of the switch valve (24b) enables the pump/motor (M) to be operated as a pump to thus store liquid of a tank (21) under pressure in the accumulator (22), and closing the cut-off valve (24a) and connecting the intake liquid path (Li) to the high pressure liquid path (Lh) by means of the switch valve (24b) enables the pump/motor (M) to rotate without load; it is therefore possible to switch between three circuits, that is, drive (motor operation), regeneration (p
    Type: Application
    Filed: September 30, 2010
    Publication date: September 20, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Tsuneo Endo, Shigeru Ibaraki, Kazutaka Takahashi, Daiki Sato, Seiichiro Ishikawa
  • Publication number: 20120234417
    Abstract: A liquid flow rate control valve is provided in which since a total area of overlapping sections of a communication hole group (38c, 38d) of a distributor (38) and an outlet opening (37a, 37b) of a sleeve (37) changes when the distributor (38) is rotated by a first electric motor (46), if a rotor (42) is rotated by means of a second electric motor (47), an input port (31e) communicates with an output port (31f) through an inlet opening (42c, 42d) of the rotor (42), the communication hole group (38c, 38d) of the distributor (38), and the outlet opening (37a, 37b) of the sleeve (37) when the inlet opening (42c, 42d) of the rotor (42) passes through the overlapping sections, thereby making it possible to carry out PWM control of a flow rate of liquid. Since a thrust load in an axis (L) direction does not act on the distributor (38) and the rotor (42), supporting the distributor (38) and the rotor (42) becomes easy, thereby enabling the cost and weight to be cut.
    Type: Application
    Filed: September 30, 2010
    Publication date: September 20, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Tsuneo Endo, Seiichiro Ishikawa, Hidemi Arai, Yuki Shibahata, Mitsuo Kadota, Hiroshi Hanabusa, Daiki Sato, Kensaku Yamamoto
  • Publication number: 20060080392
    Abstract: A message can be efficiently communicated by using a location accessed, in a virtual world embodied in a network by a portable terminal such as a mobile phone, as a trigger. By recording a message which is desired to be sent to a friend registered in a message record table of a database corresponding to a web server URL, the recorded message is distributed to the portable terminal of the friend when the friend accesses the web server using his/her own portable terminal. Thereby, a user can receive a message from a friend who knows his/her favorite music genre or artist when the user wants to download a melody and visits a melody distribution site.
    Type: Application
    Filed: September 28, 2004
    Publication date: April 13, 2006
    Applicant: DWANGO CO., LTD.
    Inventors: Nobuo Kawakami, Daiki Sato
  • Publication number: 20050176425
    Abstract: Providing content, such as a favorite ringing melody of user, to a mobile terminal by only accessing a server system via a mobile terminal without manipulation by the user. A user of the mobile phone registers a profile, including the artist whom the user likes, in the web server in advance. An application of the mobile phone is automatically activated every update time interval to access the web server. The web server reads out a ringing melody of the user's favorite artist from a database that contains a favorite ringing melody set of the user obtained from the user profile of the mobile phone, according to a request for downloading contents from the mobile phone, and transmits it to the mobile phone.
    Type: Application
    Filed: September 29, 2004
    Publication date: August 11, 2005
    Applicant: DWANGO CO., LTD.
    Inventors: Nobuo Kawakami, Daiki Sato
  • Publication number: 20050163300
    Abstract: A call control system which does not transmit a monotone ring-back tone to the calling party terminal but uses a calling period to dynamically provide content, such as, for example, music, voice and/or images, to a calling party in response to the identity of the calling party. Once profiles of users having the calling party terminal are registered in a mobile switching system, reproduction content composed of music, voice and/or images may be employed for the calling party terminal of the calling party, based on the profile of the calling party. As a result, the calling party may have an interesting time instead of having an uninteresting time until the called party answers the phone.
    Type: Application
    Filed: September 29, 2004
    Publication date: July 28, 2005
    Applicant: DWANGO CO., LTD.
    Inventors: Nobuo Kawakami, Daiki Sato
  • Patent number: 4841144
    Abstract: A dust-proof tube for a photosensor including of a cylindrical portion having a thick wall and substantially the same length as that of the photosensor, the inner diameter of the cylindrical portion being substantially equal to the outer diameter of the photosensor so that the cylindrical portion can receive the photosensor sealingly, and a frustum portion integrally formed with the cylindrical portion and extending from the end of the cylindrical portion, the cylindrical portion and the frustum portion being made of elastic material.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: June 20, 1989
    Assignee: Laurel Bank Machines Co., Ltd.
    Inventors: Kouichi Goi, Hiroshi Emori, Daiki Sato