Patents by Inventor Masaaki Uchida

Masaaki Uchida 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: 11008919
    Abstract: An internal combustion engine with a turbocharger includes a catalyst, downstream of a turbine, in an exhaust passage. The internal combustion engine includes a waste gate, and a waste gate valve. The internal combustion engine further includes a flow-adjusting member or a flow-adjusting mechanism. The flow-adjusting member disperses a flow of exhaust gas from the waste gate when the opening degree of the waste gate valve is small and concentrates the flow when the opening degree of the waste gate valve is large. The flow-adjusting mechanism switches between a dispersed state in which the flow is dispersed and a concentrate state in which the flow is concentrated.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: May 18, 2021
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, SOKEN, INC.
    Inventors: Hideaki Kosuge, Tadayoshi Nakase, Mitsunobu Uchida, Masaaki Kono, Keiji Yoeda
  • Patent number: 9670974
    Abstract: A device for controlling a start of a vehicle includes a rotation speed obtaining unit that obtains an actual engine rotation speed of the engine, a target rotation speed computing unit that computes a target rotation speed of the engine in the slip control, a control target value computing unit that computes a control target value, which is a target value for controlling the engine rotation speed to the target rotation speed based on the actual engine rotation speed and the target rotation speed, and an instruction value computing unit that computes an instruction value for the lock-up clutch necessary to control the engine rotation speed to the control target value based on the control target value.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: June 6, 2017
    Assignees: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Takateru Kawaguchi, Akito Suzuki, Kenji Nakashima, Aki Hayakawa, Yasuhiro Endo, Hiroshi Sekiya, Akihiro Tanabe, Tetsuya Izumi, Masaaki Uchida
  • Publication number: 20150134215
    Abstract: A device for controlling a start of a vehicle includes a rotation speed obtaining unit that obtains an actual engine rotation speed of the engine, a target rotation speed computing unit that computes a target rotation speed of the engine in the slip control, a control target value computing unit that computes a control target value, which is a target value for controlling the engine rotation speed to the target rotation speed based on the actual engine rotation speed and the target rotation speed, and an instruction value computing unit that computes an instruction value for the lock-up clutch necessary to control the engine rotation speed to the control target value based on the control target value.
    Type: Application
    Filed: April 19, 2013
    Publication date: May 14, 2015
    Applicants: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Takateru Kawaguchi, Akito Suzuki, Kenji Nakashima, Aki Hayakawa, Yasuhiro Endo, Hiroshi Sekiya, Akihiro Tanabe, Tetsuya Izumi, Masaaki Uchida
  • Patent number: 8712649
    Abstract: A transmission controller permits a 2-1 shift, in which a gear position of a subtransmission mechanism is changed from a second speed to a first speed, when an accelerator pedal has been depressed to or above a predetermined opening. The gear position of the subtransmission mechanism is changed from the second speed to the first speed when an actual through speed ratio passes a mode switch line from a High side to a Low side while the 2-1 shift is permitted in the subtransmission mechanism.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: April 29, 2014
    Assignees: Jatco Ltd, Nissan Motor Co., Ltd.
    Inventors: Tateki Jozaki, Hideaki Suzuki, Ryousuke Nonomura, Mamiko Inoue, Seiichiro Takahashi, Tatsuo Ochiai, Masato Koga, Masaaki Uchida, Ryoji Kadono
  • Patent number: 8465395
    Abstract: A control apparatus for an automatic transmission includes a stepwise variable transmission mechanism; a power ON/OFF state judging section; and a shift control section configured to control the stepwise variable transmission mechanism to a target rotational speed by disengaging the first engagement portion and engaging the second engagement portion in accordance with a torque inputted to the stepwise variable transmission mechanism, the shift control section being configured to engage one of the first engagement portion and the second engagement portion which has a function to suppress a variation of an input rotational speed of the stepwise variable transmission mechanism which is generated by a switching of the power ON/OFF state when the power ON/OFF state is switched at the shift control of the stepwise variable transmission mechanism, and to disengage the other of the first engagement portion and the second engagement portion.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: June 18, 2013
    Assignees: Nissan Motor Co., Ltd., JATCO Ltd
    Inventors: Seiichiro Takahashi, Tatsuo Ochiai, Masaaki Uchida, Masato Koga, Ryoji Kadono, Tateki Jozaki, Hideaki Suzuki, Ryousuke Nonomura, Mamiko Inoue
  • Patent number: 8428834
    Abstract: A control system of an automatic transmission including a stepwise variable transmission section and a continuously variable transmission section makes a speed change control of the continuously variable transmission section cooperate with a change of an input rotation speed of the stepwise variable transmission section and is configured to judge, during the shift change of the stepwise variable transmission section, whether a delivery of a torque from one of a plurality of disengaging side frictional elements to one of a plurality of engaging side frictional elements is completed, and to start the speed change control of the continuously variable transmission section upon judgment that the delivery of the torque is completed and that an inertial phase has started.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: April 23, 2013
    Assignees: Nissan Motor Co., Ltd., Jatco Ltd
    Inventors: Seiichiro Takahashi, Masato Koga, Masaaki Uchida, Tatsuo Ochiai, Ryoji Kadono, Tateki Jozaki, Hideaki Suzuki, Ryousuke Nonomura, Mamiko Inoue
  • Patent number: 8406967
    Abstract: A control apparatus for an automatic transmission system having a serial arrangement of a stepwise variable automatic transmission mechanism and a continuously variable automatic transmission mechanism, the control apparatus being disposed in the automatic transmission system and performing a shift control of the continuously variable automatic transmission mechanism in accordance with variation in transmission ratio of the stepwise variable automatic transmission mechanism, the control apparatus including a control section configured to execute a retardation processing upon shift control of one of the continuously variable transmission mechanism and the stepwise variable transmission mechanism which has a smaller response delay of an actual transmission ratio from a target transmission ratio than that of the other transmission mechanism.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: March 26, 2013
    Assignees: Nissan Motor Co., Ltd., Jatco Ltd
    Inventors: Seiichiro Takahashi, Tatsuo Ochiai, Masaaki Uchida, Masato Koga, Ryoji Kadono, Tateki Jozaki, Hideaki Suzuki, Ryousuke Nonomura, Mamiko Inoue
  • Patent number: 8403809
    Abstract: The transmission controller changes the gear position of the subtransmission mechanism and varies the speed ratio of the variator in an opposite direction to a speed ratio variation direction of the subtransmission mechanism when the actual through speed ratio passes a predetermined mode switch line. When the improvement in the shift response of the continuously variable transmission is determined to be required and the actual through speed ratio passes the mode switch line from a Low side to the High side, the transmission controller increases a shift speed of the subtransmission mechanism compared with a normal coordinated shift.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 26, 2013
    Assignees: Jatco Ltd, Nissan Motor Co., Ltd.
    Inventors: Tateki Jozaki, Hideaki Suzuki, Ryousuke Nonomura, Mamiko Inoue, Seiichiro Takahashi, Tatsuo Ochiai, Masato Koga, Masaaki Uchida, Ryoji Kadono
  • Patent number: 8364359
    Abstract: In control apparatus and method for an automatic transmission, a gear shift state of a stepwise variable transmission mechanism is controlled to a target gear shift state by releasing a first engagement section according to a reduction in a capacity of the first engagement section and, simultaneously, by engaging a second engagement section according to an increase in the capacity of the second engagement section, in accordance with a torque inputted to the stepwise variable transmission mechanism and, during an inertia phase, either one of the first and second engagement sections functions as a gear shift state control side engagement section and the capacity of a gear shift state non-control side engagement section which is the other engagement section is increased when determining that it is impossible to make the gear shift state follow up the target gear shift state at the gear shift state control side engagement section.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: January 29, 2013
    Assignees: Nissan Motor Co., Ltd., Jatco Ltd
    Inventors: Seiichiro Takahashi, Tatsuo Ochiai, Masaaki Uchida, Masato Koga, Ryoji Kadono, Tateki Jozaki, Hideaki Suzuki, Ryousuke Nonomura, Mamiko Inoue
  • Publication number: 20130013160
    Abstract: The transmission controller changes the gear position of the subtransmission mechanism and varies the speed ratio of the variator in an opposite direction to a speed ratio variation direction of the subtransmission mechanism when the actual through speed ratio passes a predetermined mode switch line. When the improvement in the shift response of the continuously variable transmission is determined to be required and the actual through speed ratio passes the mode switch line from a Low side to the High side, the transmission controller increases a shift speed of the subtransmission mechanism compared with a normal coordinated shift.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 10, 2013
    Inventors: Tateki JOZAKI, Hideaki Suzuki, Ryousuke Nonomura, Mamiko Inoue, Seiichiro Takahashi, Tatsuo Ochiai, Masato Koga, Masaaki Uchida, Ryoji Kadono
  • Patent number: 8323141
    Abstract: A continuously variable transmission includes a variator capable of varying a speed ratio continuously, and a subtransmission mechanism provided in series with the variator. On the basis of an operating condition of a vehicle, a transmission controller sets a destination through speed ratio, which is an overall speed ratio of the variator and the subtransmission mechanism to be realized in accordance with the operating condition, and controls the variator and the subtransmission mechanism on the basis thereof. When shifts are prohibited in the subtransmission mechanism, the destination through speed ratio is limited to a speed ratio range that can be realized only by a shift in the variator.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: December 4, 2012
    Assignees: JATCO Ltd, Nissan Motor Co., Ltd.
    Inventors: Tateki Jozaki, Hideaki Suzuki, Ryousuke Nonomura, Mamiko Inoue, Seiichiro Takahashi, Tatsuo Ochiai, Masato Koga, Masaaki Uchida, Ryoji Kadono
  • Patent number: 8298119
    Abstract: The transmission controller changes the gear position of the subtransmission mechanism and varies the speed ratio of the variator in an opposite direction to a speed ratio variation direction of the subtransmission mechanism when the actual through speed ratio passes a predetermined mode switch line. When the improvement in the shift response of the continuously variable transmission is determined to be required and the actual through speed ratio passes the mode switch line from a Low side to the High side, the transmission controller increases a shift speed of the subtransmission mechanism compared with a normal coordinated shift.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: October 30, 2012
    Assignees: Jatco Ltd, Nissan Motor Co., Ltd.
    Inventors: Tateki Jozaki, Hideaki Suzuki, Ryousuke Nonomura, Mamiko Inoue, Seiichiro Takahashi, Tatsuo Ochiai, Masato Koga, Masaaki Uchida, Ryoji Kadono
  • Patent number: 8280597
    Abstract: A control apparatus of an automatic transmission has an engagement part, a power-ON/OFF state judgment section and a control section controlling a capacity of the engagement part. The control section compares an actual input revolution speed difference absolute value of an absolute value of a difference between an input revolution speed when engaged and an actual input revolution speed with a target input revolution speed difference absolute value of an absolute value of a difference between the input revolution speed when engaged and a target input revolution speed, then a deviation is determined by subtracting the target input revolution speed difference absolute value from the actual input revolution speed difference absolute value. When the deviation is positive, the capacity is increased. When the deviation is negative, the capacity is reduced. When the deviation is zero, a previous capacity that is set before the comparison of the both absolute values is maintained.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: October 2, 2012
    Assignees: Nissan Motor Co., Ltd., JATCO Ltd
    Inventors: Seiichiro Takahashi, Tatsuo Ochiai, Masaaki Uchida, Masato Koga, Ryoji Kadono, Tateki Jozaki, Hideaki Suzuki, Ryousuke Nonomura, Mamiko Inoue
  • Patent number: 8241178
    Abstract: A continuously variable transmission includes a variator capable of varying a speed ratio continuously, and a subtransmission mechanism provided in series with the variator. When an actual through speed ratio passes a predetermined mode switch speed ratio, a transmission controller performs a coordinated shift in which a gear position of the subtransmission mechanism is changed and a speed ratio of the variator is varied in an opposite direction to a speed ratio variation direction of the subtransmission mechanism. When the rapid deceleration is determined to be underway, the transmission controller decreases a speed ratio variation amount of the variator in the direction of a High side accompanied by a downshift of the subtransmission mechanism compared with the coordinated shift.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: August 14, 2012
    Assignees: Jatco Ltd, Nissan Motor Co., Ltd.
    Inventors: Tateki Jozaki, Hideaki Suzuki, Ryousuke Nonomura, Mamiko Inoue, Seiichiro Takahashi, Tatsuo Ochiai, Masato Koga, Masaaki Uchida, Ryoji Kadono
  • Patent number: 8037792
    Abstract: A device for mounting a cover of a cutting blade to a riving knife may have an engaging member for releasably engaging at least a part of the riving knife from both sides, in a direction of thickness of the riving knife. The engaging member is manually operable without any additional tools. A device for mounting a riving knife to a table saw may include a manually operable lock member and a biasing member. The biasing member is arranged and constructed to normally bias the lock member towards a lock position. The riving knife may be divided into a first knife portion and a second knife portion. A positioning device may position the first knife portion and the second knife portion substantially within a single plate.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: October 18, 2011
    Assignee: Makita Corporation
    Inventors: Katsuhiko Sasaki, Takehiko Sugiura, Masahiko Inai, Masaaki Uchida
  • Patent number: 7962267
    Abstract: A control apparatus for an automatic transmission includes a target-value setting section configured to set a target rotational-speed difference between input and output rotational speeds of at least one of first and second friction-engagement elements; a total torque-capacity calculating section configured to calculate a total torque capacity of the first and second friction-engagement elements by adding a transmission input torque to a correction value calculated from a deviation between the target rotational-speed difference and an actual rotational-speed difference; a distribution-ratio setting section configured to set a distribution ratio; an individual torque-capacity calculating section configured to calculate individual torque capacities of both second friction-engagement elements on the basis of the total torque capacity and the distribution ratio; and an engagement control section configured to control engagement states of the both friction-engagement elements in accordance with the individual torq
    Type: Grant
    Filed: July 25, 2007
    Date of Patent: June 14, 2011
    Assignee: Jatco Ltd
    Inventors: Tomoaki Honma, Masaaki Uchida, Shusaku Katakura, Yoshinobu Kawamoto, Sadamu Fujiwara
  • Patent number: 7912614
    Abstract: An automatic transmission control apparatus is provided with a control scheme that focuses on the rotational speed differences of the frictional engaging elements and the distribution of torque transferred by the frictional engaging elements. When the automatic transmission is upshifted while in a power-off state, the individual torque capacity of a frictional engaging element being released and the individual torque capacity of a frictional engaging element being connected are corrected by adding a prescribed torque capacity amount to each of the individual torque capacities during an inertia phase of the shift control in which a compensation is executed for inertia related to changing the gear ratio. In this way, frictional losses are induced in the frictional engaging elements so as to absorb the inertia torque and lower the input rotational speed more quickly.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: March 22, 2011
    Assignee: Jatco Ltd
    Inventors: Tomoaki Honma, Masaaki Uchida, Shusaku Katakura, Yoshinobu Kawamoto, Sadamu Fujiwara
  • Patent number: 7840329
    Abstract: An automatic transmission includes at least an input section, an output section, first and second frictional engagement elements, and a controller. The input section receives an input torque from a drive unit. The first frictional engagement element has an engaged state allowing the output section to rotate at a first transmission gear ratio with respect to the input section. The second frictional engagement element has an engaged state allowing the output section to rotate at a second transmission gear ratio with respect to the input section. The controller controls at least a gear shift from the first transmission gear ratio to the second transmission gear ratio. The controller controls the first and second frictional engagement elements and the drive unit so as to cancel an inertia torque resulting from the gear shift.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: November 23, 2010
    Assignee: Jatco Ltd
    Inventors: Shusaku Katakura, Masaaki Uchida, Yoshinobu Kawamoto, Tomoaki Honma, Sadamu Fujiwara
  • Patent number: 7815545
    Abstract: An automatic transmission hydraulic control apparatus includes an oil pump driven by an engine, a forward clutch arranged to be engaged by an engagement pressure from the oil pump at a start of the vehicle, a hydraulic pressure sensing section configured to sense a hydraulic pressure in the automatic transmission, a filling start judging section configured to judge a start of filling to the forward clutch in accordance with the sensed hydraulic pressure; and an engagement pressure control section configured to control the engagement pressure to go through a filling phase and an engagement phase. The engagement pressure control section shifts from the filling phase to the engagement phase when a predetermined time elapses from the judgment of the start of the filling to the forward clutch.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: October 19, 2010
    Assignee: Jatco Ltd
    Inventors: Kenji Nakashima, Masaaki Uchida, Yoshinobu Kawamoto
  • Publication number: 20100248894
    Abstract: A continuously variable transmission includes a variator capable of varying a speed ratio continuously, and a subtransmission mechanism provided in series with the variator. On the basis of an operating condition of a vehicle, a transmission controller sets a destination through speed ratio, which is an overall speed ratio of the variator and the subtransmission mechanism to be realized in accordance with the operating condition, and controls the variator and the subtransmission mechanism on the basis thereof. When shifts are prohibited in the subtransmission mechanism, the destination through speed ratio is limited to a speed ratio range that can be realized only by a shift in the variator.
    Type: Application
    Filed: March 19, 2010
    Publication date: September 30, 2010
    Inventors: Tateki JOZAKI, Hideaki Suzuki, Ryousuke Nonomura, Mamiko Inoue, Seiichiro Takahashi, Tasuo Ochiai, Masato Koga, Masaaki Uchida, Ryoji Kadono