Patents by Inventor Kenta Akazaki

Kenta Akazaki 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).

  • Controller of electromagnetic valve driving circuit and abnormality diagnosing method for electromagnetic valve driving circuit
    Patent number: 9435461
    Abstract: A controller of an electromagnetic valve driving circuit include a switching element connected to an electromagnetic valve solenoid, a cutoff circuit for cutting off a connection between a power supply and the switching element, and a current detecting unit for detecting a current flowing in the solenoid. The controller includes an abnormality diagnosing unit for outputting a cutoff command to the cutoff circuit for cutting off the connection between the power supply and the switching element, and outputting a switching command causing the switching element to perform a switching operation when a predetermined diagnosis condition is satisfied, and determining that the cutoff circuit normally operates when the solenoid current is less than a threshold value and determining that the cutoff circuit operates abnormally when the solenoid current is greater than or equal to the threshold value while outputting the cutoff command and the switching command.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: September 6, 2016
    Assignee: AISIN AW CO., LTD.
    Inventors: Kenta Akazaki, Moritaka Fukuda, Kohei Kondo, Kento Yamashita
  • CONTROLLER OF ELECTROMAGNETIC VALVE DRIVING CIRCUIT AND ABNORMALITY DIAGNOSING METHOD FOR ELECTROMAGNETIC VALVE DRIVING CIRCUIT
    Publication number: 20150014561
    Abstract: A controller of an electromagnetic valve driving circuit include a switching element connected to an electromagnetic valve solenoid, a cutoff circuit for cutting off a connection between a power supply and the switching element, and a current detecting unit for detecting a current flowing in the solenoid. The controller includes an abnormality diagnosing unit for outputting a cutoff command to the cutoff circuit for cutting off the connection between the power supply and the switching element, and outputting a switching command causing the switching element to perform a switching operation when a predetermined diagnosis condition is satisfied, and determining that the cutoff circuit normally operates when the solenoid current is less than a threshold value and determining that the cutoff circuit operates abnormally when the solenoid current is greater than or equal to the threshold value while outputting the cutoff command and the switching command.
    Type: Application
    Filed: February 22, 2013
    Publication date: January 15, 2015
    Applicant: AISIN AW CO., LTD.
    Inventors: Kenta Akazaki, Moritaka Fukuda, Kohei Kondo, Kento Yamashita