Patents by Inventor Hokuto Kusaka

Hokuto Kusaka 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: 10371040
    Abstract: An engine includes an exhaust-gas purification device. The exhaust-gas purification device purifies exhaust gas. The exhaust-gas purification device includes electrical components. The electrical components detect the states of the exhaust-gas purification device. The engine includes a cooling-water circulation mechanism for circulating cooling water for the engine. Further, a portion of the cooling water circulated by the cooling-water circulation mechanism cools the electrical components.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: August 6, 2019
    Assignee: YANMAR CO., LTD.
    Inventors: Masataka Mitsuda, Hokuto Kusaka, Masayuki Yamada, Isao Taguchi, Yoshiaki Shibata
  • Patent number: 10145289
    Abstract: An engine is provided with an exhaust gas treatment device which treats exhaust gas. The exhaust gas treatment device is provided with electric parts which detect a state of the exhaust gas purification device. The engine is provided with a cooling water circulation mechanism which circulates cooling water for the engine. Further, the electric parts are arranged in an outer side of the exhaust gas purification device on an extension in a longitudinal direction of the exhaust gas purification device.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: December 4, 2018
    Assignee: Yanmar Co., Ltd.
    Inventors: Hokuto Kusaka, Kazuyuki Miyazaki
  • Publication number: 20170009639
    Abstract: An engine includes an exhaust-gas purification device. The exhaust-gas purification device purifies exhaust gas. The exhaust-gas purification device includes electrical components. The electrical components detect the states of the exhaust-gas purification device. The engine includes a cooling-water circulation mechanism for circulating cooling water for the engine. Further, a portion of the cooling water circulated by the cooling-water circulation mechanism cools the electrical components.
    Type: Application
    Filed: September 20, 2016
    Publication date: January 12, 2017
    Inventors: Masataka MITSUDA, Hokuto KUSAKA, Masayuki YAMADA, Isao TAGUCHI
  • Publication number: 20170009636
    Abstract: An engine is provided with an exhaust gas treatment device which treats exhaust gas. The exhaust gas treatment device is provided with electric parts which detect a state of the exhaust gas purification device. The engine is provided with a cooling water circulation mechanism which circulates cooling water for the engine. Further, the electric parts are arranged in an outer side of the exhaust gas purification device on an extension in a longitudinal direction of the exhaust gas purification device.
    Type: Application
    Filed: September 19, 2016
    Publication date: January 12, 2017
    Inventors: Hokuto KUSAKA, Kazuyuki MIYAZAKI
  • Publication number: 20160290211
    Abstract: An issue of the present invention is to provide an engine device which is provided with an exhaust gas purification device, and which can be efficiently disposed in an engine installation space. A diesel engine 1 is provided with an exhaust gas treatment case 2 that treats exhaust gas, and an exhaust gas purification device 2 is disposed at an upper face side of the diesel engine 1. In addition, the engine device has a structure in which either the diesel engine 1 or the exhaust gas purification device 2 is provided with a temporary locking body 90, while the other one is provided with a temporary locking notch 92, in which a temporary locking body 87 or the temporary locking notch 92 is disposed below an attachment part of the diesel engine 1.
    Type: Application
    Filed: November 20, 2014
    Publication date: October 6, 2016
    Applicant: YANMAR CO., LTD.
    Inventors: Masataka MITSUDA, Shinya FUKUYOSHI, Hokuto KUSAKA, Isao TAGUCHI
  • Patent number: 8176895
    Abstract: In an electronic control governor that adjusts the amount of fuel supplied to an engine so as to coincide an engine rotation speed with a target rotation speed, by driving an actuator for actuating a fuel adjusting mean due to an actuator driving current overlapped with a dither current, an amplitude or frequency of the dither current is changed, corresponding to a change in the supply quantity of the actuator driving current. Or, the amplitude and frequency of the dither current are changed corresponding to a change in the engine rotation speed. Alternatively, a ratio between turn-on time and turn-off time during one period of the dither current is changed, depending on the velocity ratio between the increased velocity and the decreased velocity of the actuator driving current. Preferably, the ratio of the turn-on time to one period of the dither current is set at 20 to 40%.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: May 15, 2012
    Assignee: Yanmar Co., Ltd.
    Inventors: Hokuto Kusaka, Hideo Shiomi, Isao Takagawa
  • Publication number: 20100108030
    Abstract: In an electronic control governor (1) that adjusts amount of fuel supplied to an engine so as to coincide an engine rotation speed with an target rotation speed, by driving an actuator (2) for actuating a fuel adjusting mean, due to an actuator driving current overlapped with a dither current, an amplitude or frequency of the dither current is changed, corresponding to change in supply quantity of the actuator driving current. Or, the amplitude and frequency of the dither current are changed, corresponding to change in the engine rotation speed. Alternatively, a ratio between turn-on time and turn-off time during one period of the dither current is changed, depending on velocity ratio between increased velocity and decreased velocity of the actuator driving current. Preferably, the ratio of the turn-on time to one period of the dither current is set at 20 to 40%.
    Type: Application
    Filed: February 26, 2008
    Publication date: May 6, 2010
    Applicant: Yanmar Co., Ltd.
    Inventors: Hokuto Kusaka, Hideo Shiomi, Isao Takagawa