Patents by Inventor Hiroaki Shiiba

Hiroaki Shiiba 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: 10605186
    Abstract: Provided is an engine control device capable of, when performing control of an in-cylinder oxygen concentration according to engine operation state, controlling an engine to accurately realize vehicle behavior intended by a driver, while suppressing generation of knock noises due to abnormal combustion.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: March 31, 2020
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Kenko Ujihara, Hiroaki Shiiba, Takeshi Matsubara, Naotoshi Shirahashi
  • Patent number: 10598110
    Abstract: A control device for controlling an engine based on an operating state of a vehicle is provided. The control device includes a processor configured to execute a basic target torque determining module for determining a basic target torque based on an operating state of the vehicle, a torque reduction amount determining module for determining a torque reduction amount based on a part of the operating state of the vehicle, a final target torque determining module for determining a final target torque based on the basic target torque and the torque reduction amount, an engine controlling module for controlling the engine to output the final target torque, and a torque change smoothing module for smoothing a chronological change of the final target torque corresponding to the torque reduction amount at a smaller smoothing degree than that of the chronological change of the final target torque corresponding to the basic target torque.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: March 24, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Kenko Ujihara, Hiroaki Shiiba, Toshiya Kan
  • Patent number: 10280865
    Abstract: Provided is a control device for an engine comprising an engine whose combustion mode is switchable according to an engine operation state, wherein the control device is capable of controlling the engine while suppressing generation of knock noise due to abnormal combustion. The control device comprises: a basic target torque-determining part (61) configured to determine a basic target torque based on a vehicle driving state including manipulation of an accelerator pedal; a torque reduction amount-determining part (63) configured to determine a torque reduction amount based on a vehicle driving state other than the manipulation of the accelerator pedal; a final target torque-determining part (65) configured to determine a final target torque based on the basic target torque and the torque reduction amount; and an engine control part (69) configured to set the combustion mode to a premixed combustion mode or a diffusion combustion mode according to the engine operation state.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: May 7, 2019
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Kenko Ujihara, Hiroaki Shiiba, Takeshi Matsubara, Naotoshi Shirahashi
  • Patent number: 10202039
    Abstract: A control device for controlling an engine based on a vehicle operating state is provided, which includes a steering angle detector for detecting a vehicle steering angle, and a processor configured to execute a basic target torque determining module for determining a basic target torque based on a vehicle operating state, a slip controller for acquiring the steering angle from the steering angle detector, detecting a slip state of wheels based on part of the vehicle operating state, and determining a torque control amount based on the slip state, a torque reduction amount determining module for acquiring the steering angle and determining a torque reduction amount based thereon, a final target torque determining module for determining a final target torque based on the basic target torque, the torque reduction amount, and the torque control amount, and an engine controlling module for controlling the engine to output the final target torque.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: February 12, 2019
    Assignee: Mazda Motor Corporation
    Inventors: Kenko Ujihara, Hiroaki Shiiba, Toshiya Kan
  • Publication number: 20180274461
    Abstract: Provided is a turbocharged engine control device capable of controlling an engine to accurately realize vehicle behavior intended by a driver, while suppressing deterioration in acceleration response.
    Type: Application
    Filed: October 14, 2016
    Publication date: September 27, 2018
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Kenko UJIHARA, Hiroaki SHIIBA, Toshiya KAN
  • Publication number: 20180274462
    Abstract: Provided is an engine control device capable of, when performing control of an in-cylinder oxygen concentration according to engine operation state, controlling an engine to accurately realize vehicle behavior intended by a driver, while suppressing generation of knock noises due to abnormal combustion.
    Type: Application
    Filed: October 14, 2016
    Publication date: September 27, 2018
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Kenko UJIHARA, Hiroaki SHIIBA, Takeshi MATSUBARA, Naotoshi SHIRAHASHI
  • Publication number: 20180266356
    Abstract: Provided is a control device for an engine comprising an engine whose combustion mode is switchable according to an engine operation state, wherein the control device is capable of controlling the engine while suppressing generation of knock noise due to abnormal combustion. The control device comprises: a basic target torque-determining part (61) configured to determine a basic target torque based on a vehicle driving state including manipulation of an accelerator pedal; a torque reduction amount-determining part (63) configured to determine a torque reduction amount based on a vehicle driving state other than the manipulation of the accelerator pedal; a final target torque-determining part (65) configured to determine a final target torque based on the basic target torque and the torque reduction amount; and an engine control part (69) configured to set the combustion mode to a premixed combustion mode or a diffusion combustion mode according to the engine operation state.
    Type: Application
    Filed: October 14, 2016
    Publication date: September 20, 2018
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Kenko UJIHARA, Hiroaki SHIIBA, Takeshi MATSUBARA, Naotoshi SHIRAHASHI
  • Publication number: 20170087986
    Abstract: A control device for controlling an engine based on a vehicle operating state is provided, which includes a steering angle detector for detecting a vehicle steering angle, and a processor configured to execute a basic target torque determining module for determining a basic target torque based on a vehicle operating state, a slip controller for acquiring the steering angle from the steering angle detector, detecting a slip state of wheels based on part of the vehicle operating state, and determining a torque control amount based on the slip state, a torque reduction amount determining module for acquiring the steering angle and determining a torque reduction amount based thereon, a final target torque determining module for determining a final target torque based on the basic target torque, the torque reduction amount, and the torque control amount, and an engine controlling module for controlling the engine to output the final target torque.
    Type: Application
    Filed: September 20, 2016
    Publication date: March 30, 2017
    Inventors: Kenko Ujihara, Hiroaki Shiiba, Toshiya Kan
  • Publication number: 20170089281
    Abstract: A control device for controlling an engine based on an operating state of a vehicle is provided. The control device includes a processor configured to execute a basic target torque determining module for determining a basic target torque based on an operating state of the vehicle, a torque reduction amount determining module for determining a torque reduction amount based on a part of the operating state of the vehicle, a final target torque determining module for determining a final target torque based on the basic target torque and the torque reduction amount, an engine controlling module for controlling the engine to output the final target torque, and a torque change smoothing module for smoothing a chronological change of the final target torque corresponding to the torque reduction amount at a smaller smoothing degree than that of the chronological change of the final target torque corresponding to the basic target torque.
    Type: Application
    Filed: September 20, 2016
    Publication date: March 30, 2017
    Inventors: Kenko Ujihara, Hiroaki Shiiba, Toshiya Kan