Patents by Inventor Takayuki SUI

Takayuki SUI 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).

  • EGR control device and EGR control method
    Patent number: 9970368
    Abstract: An EGR control device includes an estimate EGR ratio calculating portion adapted to calculate an estimate EGR ratio from a fresh air flow amount at a joining portion with the EGR passage of an intake passage and an EGR gas amount passing through the EGR valve, and a joining portion EGR ratio estimating portion adapted to correct an estimate EGR ratio on the basis of a gaseous state inside the introduction passage when the EGR valve switches from a closed state to an open state, to calculate a joining portion EGR ratio being a proportion of an EGR gas amount with respect to fresh air in the joining portion.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: May 15, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Daisuke Takaki, Hirofumi Tsuchida, Kazuhiko Sugawara, Kenji Suzuki, Takayuki Sui
  • EGR CONTROL DEVICE AND EGR CONTROL METHOD
    Publication number: 20170082044
    Abstract: An EGR control device includes an estimate EGR ratio calculating portion adapted to calculate an estimate EGR ratio from a fresh air flow amount at a joining portion with the EGR passage of an intake passage and an EGR gas amount passing through the EGR valve, and a joining portion EGR ratio estimating portion adapted to correct an estimate EGR ratio on the basis of a gaseous state inside the introduction passage when the EGR valve switches from a closed state to an open state, to calculate a joining portion EGR ratio being a proportion of an EGR gas amount with respect to fresh air in the joining portion.
    Type: Application
    Filed: May 21, 2014
    Publication date: March 23, 2017
    Applicant: NISSAN MOTOR CO., LTD.
    Inventors: Daisuke TAKAKI, Hirofumi TSUCHIDA, Kazuhiko SUGAWARA, Kenji SUZUKI, Takayuki SUI