Patents by Inventor Kazunori Nimura

Kazunori Nimura 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: 20150274143
    Abstract: A brake control device includes a front-wheel left-right communication passage that allows communication between wheel cylinders for a front-left wheel and a front-right wheel via a front-wheel communication on-off valve; a rear-wheel left-right communication passage that allows communication between wheel cylinders for a rear-left wheel and a rear-right wheel via a rear-wheel communication on-off valve; and a front-rear communication passage that allows communication between a wheel cylinder of either one of the front-left and front-right wheels and a wheel cylinder of either one of the rear-left and rear-right wheels via a front-rear communication on-off valve, wherein the brake control device keeps the front-wheel communication on-off valve, the rear-wheel communication on-off valve, and the front-rear communication on-off valve opened to set a mode to a four-wheel communication mode during a normal brake control.
    Type: Application
    Filed: October 30, 2012
    Publication date: October 1, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tetsuya Miyazaki, Kazunori Nimura
  • Patent number: 8738260
    Abstract: A brake control system includes: a friction brake unit for generating a friction braking force; a regenerative brake unit for generating a regenerative braking force; and a control unit for controlling the regenerative and friction brake units based on a regenerative target value and a friction target value defined based on a target deceleration, and for controlling a braking force by selecting one of a plurality of control modes including both a regeneration permission mode in which a total braking force is generated by the regenerative and friction braking forces, and a regeneration prohibition mode in which the target deceleration is generated by the friction braking force. In the permission mode, the control unit generates the total force by providing a delay, while in the prohibition mode, the control unit provides a delay smaller than the above delay to the friction braking force or does not provide a delay.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: May 27, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tetsuya Miyazaki, Kazunori Nimura
  • Publication number: 20140131150
    Abstract: A brake system includes: (a) a first brake device including a first actuator and a first brake that utilizes an output of the first actuator; (b) a second brake device including a second actuator and a second brake that utilizes an output of the second actuator; (c) a regenerative-electric-energy obtaining device configured to obtain a regenerative electric energy that is returned to a power source device; and (d) an actuator control device configured to reduce a total consumed electric energy, by controlling the first actuator and/or the second actuator in a manner that maintains a state in which a required braking force is satisfied by a braking force of the first brake and/or a braking force of the second brake, such that the total consumed electric energy is made smaller when a regenerative electric energy is small, than when the regenerative electric energy is large.
    Type: Application
    Filed: July 11, 2011
    Publication date: May 15, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazunori Nimura, Takayuki Yamamoto, Tetsuya Miyazaki
  • Publication number: 20120158266
    Abstract: A brake control system includes: a friction brake unit configured to generate a friction braking force; a regenerative brake unit configured to generate a regenerative braking force; and a brake control unit configured to control the regenerative brake unit and the friction brake unit based on a regenerative target value and a friction target value based on a target braking force, which is a target of the braking force to be provided to a wheel. The brake control unit controls the regenerative brake unit based on a second regenerative target value larger than a first regenerative target value that has been defined based on the target braking force.
    Type: Application
    Filed: September 2, 2009
    Publication date: June 21, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tetsuya Miyazaki, Kazunori Nimura
  • Publication number: 20120136547
    Abstract: A brake control system includes: a friction brake unit for generating a friction braking force; a regenerative brake unit for generating a regenerative braking force; and a control unit for controlling the regenerative and friction brake units based on a regenerative target value and a friction target value defined based on a target deceleration, and for controlling a braking force by selecting one of a plurality of control modes including both a regeneration permission mode in which a total braking force is generated by the regenerative and friction braking forces, and a regeneration prohibition mode in which the target deceleration is generated by the friction braking force. In the permission mode, the control unit generates the total force by providing a delay, while in the prohibition mode, the control unit provides a delay smaller than the above delay to the friction braking force or does not provide a delay.
    Type: Application
    Filed: August 7, 2009
    Publication date: May 31, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tetsuya Miyazaki, Kazunori Nimura
  • Publication number: 20100295365
    Abstract: A master cylinder includes a first piston, a second piston, and a cylinder for housing the first piston and the second piston slidably in the axial direction. A first fluid pressure chamber, having a passage communicating with a reservoir tank, generates the fluid pressure when communication with the reservoir tank is interrupted at displacement of the first piston by a first stroke. Similarly, a second fluid pressure chamber, having a passage communicating with the reservoir tank, generates the fluid pressure when communi9cation with the reservoir tank is interrupted at displacement of the second piston by a second stroke which is smaller than the first stroke. A stroke simulator communicates with the fluid pressure chamber. A braking control apparatus is structured such that the second piston is first displaced when a brake pedal is pressed.
    Type: Application
    Filed: March 31, 2010
    Publication date: November 25, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Kazunori Nimura