Patents by Inventor Shinji Ishihara

Shinji Ishihara 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: 10557251
    Abstract: The first engine speed or a work machine is higher than the minimum engine speed, and the second engine speed is higher than the first engine speed and lower than the maximum engine speed. The ratio of the change in the target engine speed to the change in the operation amount of the engine speed instructing device when the operation amount of the engine speed instructing device is changed from the operation amount for instructing the minimum speed to the operation amount for instructing the first engine speed is larger than the ratio of the change in the target engine speed to the change in the operation amount of the engine speed instructing device when the operation amount of the engine speed instructing device is changed from the operation amount for instructing the second engine speed to the operation amount for instructing the maximum speed.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: February 11, 2020
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shinya Imura, Shinji Nishikawa, Manabu Edamura, Kouji Ishikawa, Masatoshi Hoshino, Shinji Ishihara
  • Patent number: 10538236
    Abstract: A control apparatus for a hybrid construction machine includes an engine, a motor generator driven by the engine and capable of generating electric power, a hydraulic pump driven by total torque of the engine and the motor generator, a power storage device, an inverter, a filter that collects a particulate material in exhaust gas of the engine, and a control section outputting a command signal for controlling powering operation or regeneration operation of the motor generator. The control apparatus further includes a powering operation limitation section that inputs thereto an ordinary torque command calculated by a torque command value calculation section and a demand signal for regeneration of the filter decided by a filter regeneration decision section and calculates the command signal in response to the input signals. When a filter regeneration demand signal is available, a command signal for limiting the powering operation of the motor generator is calculated.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: January 21, 2020
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shinji Ishihara, Masatoshi Hoshino
  • Patent number: 10493877
    Abstract: A vehicle seat includes a pressure-receiving member disposed rearwardly of an occupant between left and right side frames, and a rocking mechanism configured to cause a left side or a right side of the pressure-receiving member to move frontward and rearward. The rocking mechanism includes a first link member provided pivotally, a second link member provided pivotally on the first link member and pivotally connected to the pressure-receiving member, and an actuator configured to cause the first link member and the second link member to pivot.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: December 3, 2019
    Assignee: TS TECH CO., LTD.
    Inventors: Shinji Sugiyama, Kazunori Ishihara, Shuichi Shimizu
  • Patent number: 10480442
    Abstract: An object of the present invention is to provide a working machine and a working machine monitoring system using the same which is capable of improving the accuracy in determining fuel property. The working machine is provided with an engine operation parameter acquisition module (1041) that acquires an engine operation parameter representing the operation state of an engine mounted on the working machine; a refueling time acquisition module (1011) that acquires a refueling time when the working machine is supplied with fuel; and a fuel property determination module (1014) that determines the property of the fuel based on a comparison result of the time when the engine operation parameter changes, with the refueling time.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: November 19, 2019
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shinya Sato, Masatoshi Hoshino, Kouji Ishikawa, Shinji Ishihara
  • Publication number: 20190345697
    Abstract: A hydraulic excavator includes: a multijoint type front implement that is configured by coupling a plurality of driven members including a bucket; inertial measurement units that detect posture information about the plurality of driven members; and a calibration value computing section that computes calibration parameters used in calibration of detection results of the inertial measurement units; and a work position computing section that computes a relative position of the bucket to the machine body on the basis of the detection results of the inertial measurement units and the computation result of the calibration value computing section, and the calibration value computing section computes the calibration parameters on the basis of the detection results of the inertial measurement units in a plurality of postures of the front implement in which a reference point set on any of the plurality of driven members in advance matches a reference position.
    Type: Application
    Filed: March 5, 2018
    Publication date: November 14, 2019
    Inventors: Shinji ISHIHARA, Hidekazu MORIKI, Manabu EDAMURA, Hiroshi SAKAMOTO, Yasutaka TSURUGA, Yuuichirou MORITA
  • Patent number: 10458097
    Abstract: A hybrid work machine that can suppress excessive limiting on pump absorption power even in a situation in which supply of electric power to an electric motor is limited is provided. The hybrid work machine includes: an engine 22; an assist generator motor 23 connected to the engine 22 in such a manner that a torque can be transmitted to the engine 22; an electric storage device 24 that supplies electric power to the assist generator motor 23; a monitoring device 28 that monitors the electric storage device 24 and that acquires electric storage device information; a hydraulic pump 41 driven by the engine 22 and the assist generator motor 23; and a pump regulator 43 that regulates a delivery flow rate of the hydraulic pump 41.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: October 29, 2019
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Hiroaki Amano, Shinya Imura, Ryouhei Yamashita, Shinji Ishihara, Shinji Nishikawa, Masafumi Hita
  • Patent number: 10435863
    Abstract: A control system for a construction machine maintains operability of a swing combined operation even when the power supplied from an engine or storage device varies. The control system includes a target path computation section that receives an operation amount of the front implement operation device, an operation amount of the swing operation device, a speed of the front implement drive unit detected, and an angular speed of the swing structure drive unit, and that computes a target path of a claw tip position of the front implement drive unit; and an actuator power computation section that regulates power supplied to the front implement drive unit or the swing structure drive unit in such a manner that a claw tip of the front implement drive unit follows the target path the front implement operation device and the swing operation device are operated simultaneously.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: October 8, 2019
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shinji Ishihara, Masafumi Hita, Shinya Imura
  • Patent number: 10273656
    Abstract: The present invention includes a battery controller that calculates an electrical storage remaining amount of a battery, a charging/discharging request calculation part that calculates a charging/discharging request amount for keeping electric power outputted by the battery within a predetermined range based on the electrical storage remaining amount calculated, a target rotational speed calculation part that calculates a target rotational speed command value of a motor generator, and an inverter that controls the motor generator according to the target rotational speed command value calculated, and it is configured that at least one of the battery controller and the inverter calculates the actual charging/discharging amount of the battery, and that the target rotational speed calculation part calculates a target rotational speed correction value from difference between the charging/discharging request amount and the actual charging/discharging amount and corrects the target rotational speed command value.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: April 30, 2019
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Masatoshi Hoshino, Shinji Ishihara, Kentarou Itoga
  • Publication number: 20190112996
    Abstract: An object of the present invention is to provide a working machine and a working machine monitoring system using the same which is capable of improving the accuracy in determining fuel property. The working machine is provided with an engine operation parameter acquisition module (1041) that acquires an engine operation parameter representing the operation state of an engine mounted on the working machine; a refueling time acquisition module (1011) that acquires a refueling time when the working machine is supplied with fuel; and a fuel property determination module (1014) that determines the property of the fuel based on a comparison result of the time when the engine operation parameter changes, with the refueling time.
    Type: Application
    Filed: December 13, 2018
    Publication date: April 18, 2019
    Inventors: Shinya SATO, Masatoshi HOSHINO, Kouji ISHIKAWA, Shinji ISHIHARA
  • Publication number: 20190055716
    Abstract: A construction machine capable of achieving favorable operability in a combined operation is provided. A hybrid excavator includes: a boom cylinder 10 driven by hydraulic fluid from a hydraulic pump 16b; a swing hydraulic motor 5 driven by hydraulic fluid from the hydraulic pump 16b; a swing electric motor 6 connected mechanically with the swing hydraulic motor 5; an inverter 19 that controls operation of the swing electric motor 6; and a controller 21 that outputs to the inverter 19 a torque command value for controlling electric driving torque or electricity generating torque of the swing electric motor 6.
    Type: Application
    Filed: September 6, 2017
    Publication date: February 21, 2019
    Inventors: Shinji ISHIHARA, Shinya IMURA, Shinji NISHIKAWA, Hiroaki AMANO
  • Patent number: 10151332
    Abstract: A hybrid work machine includes: an engine controller (14) that controls rotational speed of an engine (7) in accordance with a target rotational speed input from an EC dial (31); an assist motor (10) that generates electricity using power of the engine (7); a hydraulic pump (6) operated using power of the engine and/or of the assist motor; and a vehicle body controller (11) that estimates power (Pe) the engine is required to output when a request to generate electricity is sent to the assist motor and permits the assist motor to generate electricity only when the engine power requirement is not greater than an electricity generation threshold value (Eth1). The electricity generation threshold value (Eth1) is determined based on the power and characteristics of energy loss of the engine (7).
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: December 11, 2018
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Masatoshi Hoshino, Shinji Ishihara, Shiro Yamaoka
  • Publication number: 20180258613
    Abstract: A hybrid work machine that can suppress excessive limiting on pump absorption power even in a situation in which supply of electric power to an electric motor is limited is provided. The hybrid work machine includes: an engine 22; an assist generator motor 23 connected to the engine 22 in such a manner that a torque can be transmitted to the engine 22; an electric storage device 24 that supplies electric power to the assist generator motor 23; a monitoring device 28 that monitors the electric storage device 24 and that acquires electric storage device information; a hydraulic pump 41 driven by the engine 22 and the assist generator motor 23; and a pump regulator 43 that regulates a delivery flow rate of the hydraulic pump 41.
    Type: Application
    Filed: September 2, 2016
    Publication date: September 13, 2018
    Inventors: Hiroaki AMANO, Shinya IMURA, Ryouhei YAMASHITA, Shinji ISHIHARA, Shinji NISHIKAWA, Masafumi HITA
  • Publication number: 20180238018
    Abstract: A control system for a construction machine maintains operability of a swing combined operation even when the power supplied from an engine or storage device varies. The control system includes a target path computation section that receives an operation amount of the front implement operation device, an operation amount of the swing operation device, a speed of the front implement drive unit detected, and an angular speed of the swing structure drive unit, and that computes a target path of a claw tip position of the front implement drive unit; and an actuator power computation section that regulates power supplied to the front implement drive unit or the swing structure drive unit in such a manner that a claw tip of the front implement drive unit follows the target path the front implement operation device and the swing operation device are operated simultaneously.
    Type: Application
    Filed: March 11, 2016
    Publication date: August 23, 2018
    Inventors: Shinji ISHIHARA, Masafumi HITA, Shinya IMURA
  • Publication number: 20180226144
    Abstract: To enable processing to suitably recommend, among a plurality of functional materials or bacteria including one or more lactic acid bacteria that make differences in effect among individuals, appropriate ones suiting a user for each of a plurality of users. A user information acquisitor 301 acquires user information. A recommendation target extractor 503 extracts and presents information about a functional material including one or more lactic acid bacteria to the user. A grouping unit 305 classifies a plurality of users into groups based on information about an intestinal bacterial flora. The recommendation target extractor 503 presents the information about the functional material to the user acquired by the user information acquisitor 301 based on information acquired after another user classified into the same group as the user by the grouping unit 305 takes in the functional material and an evaluation of the functional material previously done by the user.
    Type: Application
    Filed: August 12, 2016
    Publication date: August 9, 2018
    Inventors: Shinji Ishihara, Masatoshi Taketani, Kenichi Hashizume
  • Publication number: 20180163374
    Abstract: The first engine speed or a work machine is higher than the minimum engine speed, and the second engine speed is higher than the first engine speed and lower than the maximum engine speed. The ratio of the change in the target engine speed to the change in the operation amount of the engine speed instructing device when the operation amount of the engine speed instructing device is changed from the operation amount for instructing the minimum speed to the operation amount for instructing the first engine speed is larger than the ratio of the change in the target engine speed to the change in the operation amount of the engine speed instructing device when the operation amount of the engine speed instructing device is changed from the operation amount for instructing the second engine speed to the operation amount for instructing the maximum speed.
    Type: Application
    Filed: March 10, 2016
    Publication date: June 14, 2018
    Inventors: Shinya IMURA, Shinji NISHIKAWA, Manabu EDAMURA, Kouji ISHIKAWA, Masatoshi HOSHINO, Shinji ISHIHARA
  • Publication number: 20180087241
    Abstract: The present invention includes a battery controller that calculates an electrical storage remaining amount of a battery, a charging/discharging request calculation part that calculates a charging/discharging request amount for keeping electric power outputted by the battery within a predetermined range based on the electrical storage remaining amount calculated, a target rotational speed calculation part that calculates a target rotational speed command value of a motor generator, and an inverter that controls the motor generator according to the target rotational speed command value calculated, and it is configured that at least one of the battery controller and the inverter calculates the actual charging/discharging amount of the battery, and that the target rotational speed calculation part calculates a target rotational speed correction value from difference between the charging/discharging request amount and the actual charging/discharging amount and corrects the target rotational speed command value.
    Type: Application
    Filed: June 1, 2016
    Publication date: March 29, 2018
    Inventors: Masatoshi HOSHINO, Shinji ISHIHARA, Kentarou ITOGA
  • Patent number: 9863124
    Abstract: To provide construction machinery capable of more efficiently utilizing the energy of return hydraulic oil from a hydraulic actuator.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: January 9, 2018
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Shinji Ishihara, Masatoshi Hoshino, Kazuo Fujishima
  • Patent number: 9822510
    Abstract: To provide a construction machine that appropriately sets the magnitude of an engine output for each work mode. A construction machine according to the present invention includes: an engine (22); a generator-motor (23) configured to generate electric power by the engine; a hydraulic pump (41) configured to be driven by the engine and the generator-motor; a hydraulic actuator (32, 34, 36) that drives and operates a working device (30) with the power of the hydraulic pump; an electric storage device (24) for supplying electric power to drive the generator-motor and charging the electric power generated by the generator-motor; a work-mode selecting device (45, 46) that selects a work mode corresponding to operation of an operator; and an engine-output setting unit (403, 405, 407) that sets the magnitude of the output of the engine corresponding to the work mode selected by the work-mode selecting device.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: November 21, 2017
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Hiroshi Sakamoto, Masatoshi Hoshino, Shinji Ishihara
  • Patent number: 9816252
    Abstract: This invention is a hydraulic work machine having an electric assist motor coupled to an engine and a hydraulic pump, in the hydraulic work machine of which, a rotational speed and torque of the engine are controlled so that an operating point of the engine moves along a predetermined route for yielding a combustion state of the engine under a transient state that the engine changes in speed and torque. A target speed and torque of the engine 7 are set so that the rotational speed and torque of the engine 7 will change along a predetermined route F in a running region of the engine, respective rates of change of the target rotational speed and torque of the engine 7 are limited, and the engine 7 is controlled to yield the target engine speed. In addition, torque of the assist motor 10 is controlled to yield the target torque of the engine.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: November 14, 2017
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Masatoshi Hoshino, Shinji Ishihara, Kazuo Fujishima
  • Publication number: 20170320483
    Abstract: A control apparatus for a hybrid construction machine which can continue filter regeneration without impairing the operability as far as possible irrespective of a condition of a machine body or a power storage device is provided. The control apparatus for a hybrid construction machine includes an engine, a motor generator driven by the engine and capable of generating electric power, a hydraulic pump driven by total torque of the engine and the motor generator, a power storage device, an inverter, a filter that collects a particulate material in exhaust gas of the engine, and a control section that outputs a command signal for controlling powering operation or regeneration operation of the motor generator.
    Type: Application
    Filed: March 13, 2015
    Publication date: November 9, 2017
    Inventors: Shinji ISHIHARA, Masatoshi HOSHINO