Patents by Inventor Tadasuke Matsumoto

Tadasuke Matsumoto 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).

  • Engine control device
    Patent number: 10408144
    Abstract: An engine control device including: a turbocharger; an EGR device that includes an EGR passage, an EGR valve, and an EGR cooler; and a PCM that, based on an operation state of an engine, controls the EGR valve to adjust an EGR rate that is a ratio of an EGR gas amount to a total amount of gas introduced to a cylinder of the engine. The PCM controls the EGR valve such that, in a high load range and a medium load range for the engine, the EGR device recirculates the EGR gas into an intake passage; and controls the EGR valve such that an EGR rate in the high load range is lower than an EGR rate in the medium load range at a same engine speed.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: September 10, 2019
    Assignee: Mazda Motor Corporation
    Inventors: Tadasuke Matsumoto, Shouichi Aiga, Yoshitomo Matsuo, Kazuhiro Nishimura, Tomoaki Fujiyama
  • ENGINE CONTROL DEVICE
    Publication number: 20180245529
    Abstract: An engine control device including: a turbocharger; an EGR device that includes an EGR passage, an EGR valve, and an EGR cooler; and a PCM that, based on an operation state of an engine, controls the EGR valve to adjust an EGR rate that is a ratio of an EGR gas amount to a total amount of gas introduced to a cylinder of the engine. The PCM controls the EGR valve such that, in a high load range and a medium load range for the engine, the EGR device recirculates the EGR gas into an intake passage; and controls the EGR valve such that an EGR rate in the high load range is lower than an EGR rate in the medium load range at a same engine speed.
    Type: Application
    Filed: February 3, 2017
    Publication date: August 30, 2018
    Inventors: Tadasuke Matsumoto, Shouichi Aiga, Yoshitomo Matsuo, Kazuhiro Nishimura, Tomoaki Fujiyama