Patents by Inventor Shinya Mochiyama

Shinya Mochiyama 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: 9599169
    Abstract: A friction engagement element (CLx) is provided radially outside of a peripheral wall portion (32) of a clutch drum (30) and configured to be engaged by a piston (40). A piston (70) is provided radially inside of the peripheral wall portion (32) and configured to engage and a friction engagement element (CLz). A first peripheral wall portion (321) of the peripheral wall portion (32) includes through-holes (321a) communicating a radially inside of the first peripheral wall portion (321) with a radially outside thereof. A through-hole (87) is provided radially inside of the piston (70). The piston (70) includes a communication passage (79) radially passing through the piston (70) and communicating the through-hole (87) with the through-holes (321a) such that lubricating oil is supplied through the communication passage (79) and the through-holes (321a) to the radially outside of the clutch drum (30) when the piston (70) is in an initial position.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: March 21, 2017
    Assignee: JATCO LTD
    Inventors: Hisashi Saito, Hideharu Yamamoto, Shinya Mochiyama, Atsushi Maeda
  • Publication number: 20150260237
    Abstract: A friction engagement element (CLx) is provided radially outside of a peripheral wall portion (32) of a clutch drum (30) and configured to be engaged by a piston (40). A piston (70) is provided radially inside of the peripheral wall portion (32) and configured to engage and a friction engagement element (CLz). A first peripheral wall portion (321) of the peripheral wall portion (32) includes through-holes (321a) communicating a radially inside of the first peripheral wall portion (321) with a radially outside thereof. A through-hole (87) is provided radially inside of the piston (70). The piston (70) includes a communication passage (79) radially passing through the piston (70) and communicating the through-hole (87) with the through-holes (321a) such that lubricating oil is supplied through the communication passage (79) and the through-holes (321a) to the radially outside of the clutch drum (30) when the piston (70) is in an initial position.
    Type: Application
    Filed: September 17, 2013
    Publication date: September 17, 2015
    Applicant: JATCO Ltd.
    Inventors: Hisashi Saito, Hideharu Yamamoto, Shinya Mochiyama, Atsushi Maeda
  • Patent number: 9080618
    Abstract: In line pressure control apparatus and method for a vehicle, a line pressure controller outputs a line pressure command to reduce an indicated pressure toward a required indicated pressure by which a required pressure can be secured and which is lower than an initial stage indicated pressure from the initial stage indicated pressure preset to be higher than the required pressure, while a state of each of an electrically driven oil pump (sub-O/P) and a mechanical oil pump (M-O/P) enters a first region (a) and outputs the line pressure command to hold the indicated pressure at a time point at which the first region is ended, while the state enters a second region (b), when a hydraulic pressure source is transitioned from the electrically driven oil pump to the mechanical oil pump.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: July 14, 2015
    Assignee: JATCO LTD
    Inventors: Hiroki Kawakami, Shinya Mochiyama
  • Patent number: 8763736
    Abstract: In control apparatus and method for a hybrid vehicle, a line pressure control valve disposed at a downstream side of each of mechanical oil pump (M-O/P) and electrically driven oil pump (S-O/P) to decrease a supplied hydraulic pressure from at least one of the mechanical oil pump and the electrically driven oil pump by opening drain ports thereof in accordance with a control valve command value is provided, the control valve command value is set by adding a predetermined additive correction quantity to a required line pressure set in accordance with operating states of a hydraulic pressure clutch (CL1) and a transmission and the drain ports of the line pressure control valve are controlled to a closure side, during an actuation of the electrically driven oil pump.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: July 1, 2014
    Assignees: JATCO Ltd, Nissan Motor Co., Ltd.
    Inventors: Shinya Mochiyama, Hiroki Kawakami, Hideharu Yamamoto
  • Patent number: 8725375
    Abstract: The hydraulic control apparatus calculates a target engagement hydraulic pressure of a frictional engagement element, controls the frictional engagement element so that a revolution speed at a driving source side of the frictional engagement element is higher than a revolution speed at a driving wheel side of the frictional engagement element, outputs a command current to a solenoid valve on the basis of a map having a relationship between the target engagement hydraulic pressure and the command current, and decreases the engagement hydraulic pressure when a vehicle speed is equal to or less than a predetermined vehicle speed at which the vehicle is judged to be vehicle stop during execution of the slip control. Further, the hydraulic control apparatus corrects the map so that a variation of the command current with respect to a variation of the target engagement hydraulic pressure is small when decreasing the engagement hydraulic pressure.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: May 13, 2014
    Assignees: JATCO Ltd., Nissan Motor Co., Ltd.
    Inventors: Shinya Mochiyama, Hideharu Yamamoto
  • Patent number: 8224542
    Abstract: In an automatic transmission of this invention, a determination as to whether or not a failure has occurred in a friction element is made repeatedly while a vehicle is traveling, and control to specify the failed friction element is begun when a vehicle speed falls to or below a predetermined value for the first time following detection of the failure in the friction element (S1, S3). When the failed friction element has been specified (S4, S13, S15, S24, S26, S35, S37), usable gear positions are determined on the basis of the specified friction element, whereupon shift control is performed using only the usable gear positions (S5, S14, S16, S25, S27, S36, S38, S39).
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: July 17, 2012
    Assignee: JATCO Ltd
    Inventors: Fumitaka Nagashima, Takateru Kawaguchi, Shinya Mochiyama, Yoshihide Shinso
  • Publication number: 20120103709
    Abstract: In control apparatus and method for a hybrid vehicle, a line pressure control valve disposed at a downstream side of each of mechanical oil pump (M-O/P) and electrically driven oil pump (S-O/P) to decrease a supplied hydraulic pressure from at least one of the mechanical oil pump and the electrically driven oil pump by opening drain ports thereof in accordance with a control valve command value is provided, the control valve command value is set by adding a predetermined additive correction quantity to a required line pressure set in accordance with operating states of a hydraulic pressure clutch (CL1) and a transmission and the drain ports of the line pressure control valve are controlled to a closure side, during an actuation of the electrically driven oil pump.
    Type: Application
    Filed: October 26, 2011
    Publication date: May 3, 2012
    Inventors: Shinya Mochiyama, Hiroki Kawakami, Hideharu Yamamoto
  • Publication number: 20120109478
    Abstract: The hydraulic control apparatus calculates a target engagement hydraulic pressure of a frictional engagement element, controls the frictional engagement element so that a revolution speed at a driving source side of the frictional engagement element is higher than a revolution speed at a driving wheel side of the frictional engagement element, outputs a command current to a solenoid valve on the basis of a map having a relationship between the target engagement hydraulic pressure and the command current, and decreases the engagement hydraulic pressure when a vehicle speed is equal to or less than a predetermined vehicle speed at which the vehicle is judged to be vehicle stop during execution of the slip control. Further, the hydraulic control apparatus corrects the map so that a variation of the command current with respect to a variation of the target engagement hydraulic pressure is small when decreasing the engagement hydraulic pressure.
    Type: Application
    Filed: October 28, 2011
    Publication date: May 3, 2012
    Inventors: Shinya MOCHIYAMA, Hideharu YAMAMOTO
  • Patent number: 7935016
    Abstract: An automatic transmission includes a planetary gear mechanism, an engagement element group including a particular engagement element having first and second pressure chambers, a pressure control valve to regulate the fluid pressure for the particular engagement element, and a selector valve arranged to connect the second pressure chamber with the pressure control valve at a first valve position, and to disconnect the second pressure chamber from the pressure control valve at a second valve position. A shift control section is configured to command a shift operation from a first gear position, to a second gear position, by controlling the selector valve to the second valve position and to supply the fluid pressure to the first pressure chamber, and to judge the selector valve to be in an abnormal state, in accordance with a parameter in the shift operation.
    Type: Grant
    Filed: December 13, 2007
    Date of Patent: May 3, 2011
    Assignee: Jatco Ltd
    Inventors: Takateru Kawaguchi, Shinya Mochiyama, Fumitaka Nagashima, Yoshihide Shinso
  • Patent number: 7901315
    Abstract: An automatic transmission includes a plurality of planetary gears disposed between an input shaft and an output shaft and having a plurality of rotational elements. A plurality of frictional elements are selectively engaged and released for controlling rotations and connections of the plurality of rotational elements in accordance with instructions so as to realize a plurality of gear positions. A rotational speed detecting section detects a rotational speed of a predetermined one of the plurality of rotational elements other than the input shaft and the output shaft. A frictional element release section releases all of the plurality of frictional elements when it is judged that the rotational speed of the predetermined one of the plurality of rotational elements is higher than a predetermined rotational speed.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: March 8, 2011
    Assignee: JATCO Ltd
    Inventors: Takateru Kawaguchi, Shinya Mochiyama, Fumitaka Nagashima, Yoshihide Shinso
  • Patent number: 7862472
    Abstract: In a planetary gear type stepped automatic transmission, a gear shift control to shift a gear shift stage between a first gear shift stage and a second gear shift stage is performed by a first shift control section by referring to a first gear shift control data used when the gear shift stage is switched between the first gear shift stage and the second gear shift stage, an abnormality state due to a failure of at least one of a first frictional engaging element and a second frictional engaging element is detected, and an abnormality state gear shift control is performed to shift the gear shift stage between a third gear shift stage (for example, first speed) and a fourth gear shift stage (for example, 2.5 speed) by the first shift control section, while forcefully releasing the first frictional engaging element, when detecting the abnormality state.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: January 4, 2011
    Assignee: JATCO Ltd
    Inventors: Takateru Kawaguchi, Satoshi Ozawa, Fumitaka Nagashima, Shinya Mochiyama
  • Publication number: 20080227580
    Abstract: An automatic transmission comprising a plurality of planetary gears disposed between an input shaft and an output shaft and having a plurality of rotational elements, a plurality of frictional elements selectively engaged and released for controlling rotations and connections of the plurality of rotational elements in accordance with instructions so as to realize a plurality of gear positions, rotational speed detecting means for detecting a rotational speed of a predetermined one of the plurality of rotational elements, other than the input shaft and the output shaft, and frictional element release means for releasing all of the plurality of frictional elements when it is judged that the rotational speed of the predetermined one of the plurality of rotational elements is higher than a predetermined rotational speed.
    Type: Application
    Filed: February 12, 2008
    Publication date: September 18, 2008
    Inventors: Takateru KAWAGUCHI, Shinya MOCHIYAMA, Fumitaka NAGASHIMA, Yoshihide SHINSO
  • Publication number: 20080221764
    Abstract: In an automatic transmission of this invention, a determination as to whether or not a failure has occurred in a friction element is made repeatedly while a vehicle is traveling, and control to specify the failed friction element is begun when a vehicle speed falls to or below a predetermined value for the first time following detection of the failure in the friction element (S1, S3). When the failed friction element has been specified (S4, S13, S15, S24, S26, S35, S37), usable gear positions are determined on the basis of the specified friction element, whereupon shift control is performed using only the usable gear positions (S5, S14, S16, S25, S27, S36, S38, S39).
    Type: Application
    Filed: February 27, 2008
    Publication date: September 11, 2008
    Inventors: Fumitaka Nagashima, Takateru Kawaguchi, Shinya Mochiyama, Yoshihide Shinso
  • Publication number: 20080167155
    Abstract: An automatic transmission includes a planetary gear mechanism, an engagement element group including a particular engagement element having first and second pressure chambers, a pressure control valve to regulate the fluid pressure for the particular engagement element, and a selector valve arranged to connect the second pressure chamber with the pressure control valve at a first valve position, and to disconnect the second pressure chamber from the pressure control valve at a second valve position. A shift control section is configured to command a shift operation from a first gear position, to a second gear position, by controlling the selector valve to the second valve position and to supply the fluid pressure to the first pressure chamber, and to judge the selector valve to be in an abnormal state, in accordance with a parameter in the shift operation.
    Type: Application
    Filed: December 13, 2007
    Publication date: July 10, 2008
    Inventors: Takateru KAWAGUCHI, Shinya Mochiyama, Fumitaka Nagashima, Yoshihide Shinso
  • Publication number: 20080153655
    Abstract: In a planetary gear type stepped automatic transmission, a gear shift control to shift a gear shift stage between a first gear shift stage and a second gear shift stage is performed by a first shift control section by referring to a first gear shift control data used when the gear shift stage is switched between the first gear shift stage and the second gear shift stage, an abnormality state due to a failure of at least one of a first frictional engaging element and a second frictional engaging element is detected, and an abnormality state gear shift control is performed to shift the gear shift stage between a third gear shift stage (for example, first speed) and a fourth gear shift stage (for example, 2.5 speed) by the first shift control section, while forcefully releasing the first frictional engaging element, when detecting the abnormality state.
    Type: Application
    Filed: November 28, 2007
    Publication date: June 26, 2008
    Inventors: Takateru Kawaguchi, Satoshi Ozawa, Fumitaka Nagashima, Shinya Mochiyama
  • Publication number: 20080064568
    Abstract: There is provided a failure detection device for an automatic transmission having a one-way clutch to disable engine braking in a given gear stage and an engine braking friction element to lock the one-way clutch and switching between a first shift mode in which the engine braking friction element is disengaged in the given gear stage and a second shift mode in which the engine braking friction element is engaged in the given gear stage. The failure detection device includes a failure detection unit that detects a failure in the automatic transmission based on a deviation between actual and target transmission gear ratios during non-shift operation of the automatic transmission and a prohibition unit that prohibits operation of the failure detection unit until a predetermined time has elapsed from switching of the automatic transmission from the first shift mode to the second shift mode.
    Type: Application
    Filed: September 11, 2007
    Publication date: March 13, 2008
    Inventors: Takateru KAWAGUCHI, Shinya Mochiyama