Patents by Inventor Yotaro Kimura

Yotaro Kimura 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: 6442928
    Abstract: A control method of a gas turbine provided with a plurality of combustors each of which has a first stage combustion part effecting diffusion combustion and a second stage combustion part effecting premixed combustion, comprises: monitoring a quantity of state representative of the combustion condition of the combustor or gas turbine, and regarding the combustion condition as being abnormal combustion when the quantity of state exceeds an allowable value and lowering gas turbine load to a predetermined partial load, thereby to continue the operation.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: September 3, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Tomoyoshi Endo, Hideaki Kaneda, Yotaro Kimura, Yasutaka Komatsu, Tsugio Suzuki
  • Publication number: 20020033014
    Abstract: A control method of a gas turbine provided with a plurality of combustors each of which has a first stage combustion part effecting diffusion combustion and a second stage combustion part effecting premixed combustion, comprises: monitoring a quantity of state representative of the combustion condition of the combustor or gas turbine, and regarding the combustion condition as being abnormal combustion when the quantity of state exceeds an allowable value and lowering gas turbine load to a predetermined partial load, thereby to continue the operation.
    Type: Application
    Filed: December 3, 2001
    Publication date: March 21, 2002
    Inventors: Tomoyoshi Endo, Hideaki Kaneda, Yotaro Kimura, Yasutaka Komatsu, Tsugio Suzuki
  • Patent number: 6338240
    Abstract: A control method of a gas turbine provided with a plurality of combustors each of which has a first stage combustion part effecting diffusion combustion and a second stage combustion part effecting premixed combustion, includes monitoring a quantity of state representative of the combustion condition of the combustor or gas turbine, and regarding the combustion condition as being abnormal combustion when the quantity of state exceeds an allowable value and lowering gas turbine load to a predetermined partial load, thereby to continue the operation.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: January 15, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Tomoyoshi Endo, Hideaki Kaneda, Yotaro Kimura, Yasutaka Komatsu, Tsugio Suzuki
  • Patent number: 6145297
    Abstract: A gas-turbine combustor (1) provided with a plurality of premix burners (2-a, 2-b) and a diffusion burner (8) and capable of varying the number of the operating premix burners according to the variation of load thereon comprises fuel pipes (3-a, 3-b, 9) connected to the burners, flow control valves (4-a, 4-b, 10) placed respectively in the fuel pipes, a pressure control valves (6, 12) placed in fuel pipes (5, 11), a fuel distribution setting device (14) for controlling the respective openings of the flow control valves according to load, and a pressure ratio setting device (15) for controlling the respective openings of the pressure control valves when the condition of the flow control valves is changed.
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: November 14, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Naoyuki Nagafuchi, Kazuyuki Ito, Yotaro Kimura
  • Patent number: 6092362
    Abstract: A gas-turbine combustor (1) provided with a plurality of premix burners (2-a, 2-b) and a diffusion burner (8) and capable of varying the number of the operating premix burners according to the variation of load thereon comprises fuel pipes (3-a, 3-b, 9) connected to the burners, flow control valves (4-a, 4-b, 10) placed respectively in the fuel pipes, a pressure control valves (6, 12) placed in fuel pipes (5, 11), a fuel distribution setting device (14) for controlling the respective openings of the flow control valves according to load, and a pressure ratio setting device (15) for controlling the respective openings of the pressure control valves when the condition of the flow control valves is changed.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: July 25, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Naoyuki Nagafuchi, Kazuyuki Ito, Yotaro Kimura
  • Patent number: 5969969
    Abstract: A vehicle driving support system is provided with an environment detecting means for detecting objects existing around a vehicle and for producing output environment information, a command unit to specify a running mode of the vehicle, information processing means for generating driving operation reference information suitable for the specified running mode of the vehicle by processing the environment information specified in accordance with the running mode and a display unit to display the driving operation reference information. The information processing means monitors the inter-vehicle distance to a vehicle stopping in front of the vehicle and generates driving operation reference information to inform the driver of the starting of the precedent vehicle when the vehicle is in the congestion running mode.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: October 19, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Masakazu Ejiri, Kohji Kamejima, Tomoyuki Hamada, Takae Sakamoto, Yotaro Kimura