Patents by Inventor Masashi Seimiya

Masashi Seimiya 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).

  • Publication number: 20190241163
    Abstract: The present invention prevents occurrence of abnormal noise and swing of a vehicle in mitigating braking force of a steering wheel while reducing a steering load at the time of stationary steering to reduce a burden of a steering device and reducing stress accumulation due to stationary steering to reduce burdens of a tire, a suspension device and the steering device. The present invention includes a stop braking force control unit 202 that individually controls braking forces of steering wheels 51 and 52 and non-steering wheels 53 and 54 at the time of deceleration of the vehicle, and a pre-detection unit 203 that detects steering in a stopped state of the vehicle in advance, in which the stop braking force control unit executes, when the steering in a stopped state of the vehicle is detected in advance by the pre-detection unit, braking force mitigation control to decrease the braking forces of the steering wheels to be lower than the braking forces at the time of normal braking.
    Type: Application
    Filed: July 26, 2017
    Publication date: August 8, 2019
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Tomoyasu SAKAGUCHI, Yoshiyuki YOSHIDA, Masashi SEIMIYA, Takashi MATSUOKA
  • Patent number: 10309366
    Abstract: Provided is an engine control device which can suppress a shortage of output terminals of the control unit and an increase of costs even in a multiple-cylinder internal combustion engine equipped with ignition energy supply units of two systems. An engine control device controls a multiple-cylinder engine in which ignition energy supply units of two systems are provided for every cylinder. A signal is transmitted through a common signal line to a plurality of ignition energy supply units of one system among the ignition energy supply units of the two systems to control the ignition energy supply units of the one system.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: June 4, 2019
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Masashi Seimiya, Yoshihiko Akagi
  • Publication number: 20190107193
    Abstract: The present invention proposes a transmission control device capable of shortening a switching time between forward control and reverse control of a transmission. The present invention relates to a transmission control device that controls a transmission, including: a forward power transmission mechanism configured to move a vehicle forward; and a reverse power transmission mechanism configured to reverse the vehicle. Each of the forward power transmission mechanism and the reverse power transmission mechanism includes a driving-side connector and a driven-side connector.
    Type: Application
    Filed: July 26, 2017
    Publication date: April 11, 2019
    Inventors: Masashi SEIMIYA, Yoshiyuki YOSHIDA, Tomoyasu SAKAGUCHI, Takashi MATSUOKA
  • Publication number: 20180195485
    Abstract: Provided is an engine control device which can suppress a shortage of output terminals of the control unit and an increase of costs even in a multiple-cylinder internal combustion engine equipped with ignition energy supply units of two systems. An engine control device controls a multiple-cylinder engine in which ignition energy supply units of two systems are provided for every cylinder. A signal is transmitted through a common signal line to a plurality of ignition energy supply units of one system among the ignition energy supply units of the two systems to control the ignition energy supply units of the one system.
    Type: Application
    Filed: July 1, 2016
    Publication date: July 12, 2018
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Masashi SEIMIYA, Yoshihiko AKAGI
  • Patent number: 8038574
    Abstract: A shift control apparatus for an automatic transmission includes a pre-shift device that operates a predetermined synchromesh, based on a prediction by a predicting device. It thereby couples together a transmission input shaft (with a friction transfer mechanism that has not been used to effect a current gear position) and a transmission output shaft, through a predetermined gear train, and brings them into a standby state. The time when it is determined that the friction transfer mechanism that has not been used to effect of the current gear position has been disengaged is taken as the timing with which the synchromesh coupling operation by the standby control is started, regardless of the completion of the achievement of the current gear position.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: October 18, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Kinya Fujimoto, Yoshiyuki Yoshida, Tetsuo Matsumura, Masashi Seimiya
  • Patent number: 7740558
    Abstract: A transmission control unit predicts a next gear position when a predetermined gear position is achieved. In accordance with a result of the prediction, the transmission control unit operates a predetermined synchromesh to execute a standby control (pre-shift control). In the standby control, a transmission input shaft connected to a friction transfer mechanism not used for achieving a current gear position and a transmission output shaft are connected to each other via a predetermined gear train, and made standby. The transmission control unit makes different from each other an engagement load of the synchromesh when a connection of the synchromesh is done in accordance with the prediction result and an engagement load of the synchromesh when a connection of the synchromesh is done in accordance with the other condition different from the prediction result.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: June 22, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Tetsuo Matsumura, Yoshiyuki Yoshida, Kinya Fujimoto, Masashi Seimiya
  • Patent number: 7735388
    Abstract: A worsening of drivability is to be kept to a minimum by making a fail-safe control taking the state in the event of failure of a shifting operation into account. When clamping a sleeve to a free rotatable gear and during the period after instructing movement of the sleeve to a clamping position until movement of the sleeve to a predetermined positional range which makes it possible to judge that the sleeve has been clamped to the free rotatable gear, a pushing load for the sleeve is increased if the sleeve is in a fixed state near the balk ring, while if the sleeve is in a fixed state near the free rotatable gear, the sleeve is once returned to a neutral position thereof and is re-clamped to the free rotatable gear. Further, the number of times the sleeve is re-clamped to the free rotatable gear is counted and the use of the free rotatable gear is inhibited in accordance with the counted number of times.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: June 15, 2010
    Assignee: Hitachi, Ltd.
    Inventors: Hiroshi Sakamoto, Tatsuya Ochi, Yoshiyuki Yoshida, Tetsuo Matsumura, Kinya Fujimoto, Masashi Seimiya
  • Publication number: 20090042692
    Abstract: The control apparatus includes a so-called pre-shift means. The pre-shift means operates a predetermined synchromesh based on a result of prediction by a predicting means. It thereby couples together a transmission input shaft with which a friction transfer mechanism having not been used for achievement of a current gear position and a transmission output shaft through a predetermined gear train and brings them into standby state. As the timing with which the synchromesh coupling operation by the standby control is started, the time when it is determined that the friction transfer mechanism having not been used for the achievement of the current gear position has been disengaged is taken regardless of the completion of the achievement of the current gear position.
    Type: Application
    Filed: August 6, 2008
    Publication date: February 12, 2009
    Applicant: Hitachi, Ltd.
    Inventors: Kinya FUJIMOTO, Yoshiyuki Yoshida, Tetsuo Matsumura, Masashi Seimiya
  • Publication number: 20080234105
    Abstract: A worsening of drivability is to be kept to a minimum by making a fail-safe control taking the state in the event of failure of a shifting operation into account. When clamping a sleeve to a free rotatable gear and during the period after instructing movement of the sleeve to a clamping position until movement of the sleeve to a predetermined positional range which makes it possible to judge that the sleeve has been clamped to the free rotatable gear, a pushing load for the sleeve is increased if the sleeve is in a fixed state near the balk ring, while if the sleeve is in a fixed state near the free rotatable gear, the sleeve is once returned to a neutral position thereof and is re-clamped to the free rotatable gear. Further, the number of times the sleeve is re-clamped to the free rotatable gear is counted and the use of the free rotatable gear is inhibited in accordance with the counted number of times.
    Type: Application
    Filed: January 24, 2008
    Publication date: September 25, 2008
    Applicant: Hitachi, Ltd.
    Inventors: Hiroshi SAKAMOTO, Tatsuya Ochi, Yoshiyuki Yoshida, Tetsuo Matsumura, Kinya Fujimoto, Masashi Seimiya
  • Publication number: 20070137339
    Abstract: A transmission control unit predicts a next gear position when a predetermined gear position is achieved. In accordance with a result of the prediction, the transmission control unit operates a predetermined synchromesh to execute a standby control (pre-shift control). In the standby control, a transmission input shaft connected to a friction transfer mechanism not used for achieving a current gear position and a transmission output shaft are connected to each other via a predetermined gear train, and made standby. The transmission control unit makes different from each other an engagement load of the synchromesh when a connection of the synchromesh is done in accordance with the prediction result and an engagement load of the synchromesh when a connection of the synchromesh is done in accordance with the other condition different from the prediction result.
    Type: Application
    Filed: December 18, 2006
    Publication date: June 21, 2007
    Applicant: Hitachi, Ltd.
    Inventors: Tetsuo Matsumura, Yoshiyuki Yoshida, Kinya Fujimoto, Masashi Seimiya