Patents Examined by Edwin A. Young
  • Patent number: 10309510
    Abstract: A transmission case includes: a main transmission input shaft to which the driving force is transmitted from the engine; and a main transmission output shaft fit on the main transmission input shaft in a relatively rotatable manner. The main transmission input shaft is provided with a hydraulic pump unit, a cylinder block, and a fixed capacity hydraulic motor unit, forming a hydraulic mechanical transmission, arranged in series. Shifted driving force is transmitted to the main transmission output shaft via the fixed capacity hydraulic motor unit. The transmission case includes a planetary gear mechanism and a transmission shaft with which the shifted driving force via the main transmission output shaft and the combined driving force via the planetary gear mechanism can be transmitted.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: June 4, 2019
    Assignee: YANMAR CO., LTD.
    Inventor: Yusuke Hashimoto
  • Patent number: 10309527
    Abstract: A continuously variable transmission (CVT), a transmission control system, and a method is provided. The control system is configured to determine a measured wheel speed of two driven wheels and a first driving wheel, calculate a first driving wheel expected speed based on the driven wheel measured speeds, a track width, and a wheel base, and calculate an actual wheel speed difference between the first driving wheel measured speed and the additional wheel measured speed. The additional wheel can be either of the driven wheels or a second driving wheel. The control system is also configured to calculate a theoretical wheel speed difference between the first driving wheel expected speed and the additional wheel measured speed, calculate a zeroed-out wheel slip based on the difference between the actual wheel speed difference and the theoretical wheel speed difference, and determine whether the zeroed-out wheel slip exceeds a predetermined threshold.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: June 4, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Alexander S Barath
  • Patent number: 10308253
    Abstract: A vehicle includes an engine, a continuously variable transmission and a torque converter that has a lock-up clutch. The torque converter is arranged between the engine and the continuously variable transmission. In this vehicle, when an engagement request of the lock-up clutch is issued, an initial-motion lock-up control is executed, whereby engagement is achieved through slip control that increases the lock-up capacity and gradually reduces the slip rotational speed, which is the input-output differential rotational speed of the lock-up clutch. During the slip control of the initial-motion lock-up control, if the slip rotational speed enters a smooth ON control region that is at or below a first set value, a second engine torque reduction control is executed that reduces the torque of the engine below the normal torque that is applied in response to a driver's request.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: June 4, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Yuzuru Tohta
  • Patent number: 10302195
    Abstract: A brake interlock feature prevents release of the park mechanism unless a driver is depressing the brake pedal. This is intended to prevent the vehicle from rolling following park release. An enhanced brake interlock feature also checks to ensure that adequate brake boost is available to prevent vehicle roll before releasing the park mechanism. The feature may directly measure brake boost or may measure a quantity indirectly related to the availability of brake boost such as engine speed.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: May 28, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Joseph Norman Ulrey, Ross Dykstra Pursifull
  • Patent number: 10302183
    Abstract: Disclosed herein is a planetary gear train that provides at least nine forward speeds and at least one reverse speed by a combination of four planetary gear sets, two transfer gears, and six control elements, thereby providing improvement of power delivery performance and fuel consumption and improving ease of installation by shortening the length of the planetary gear train for an automatic transmission.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: May 28, 2019
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Jong Soo Kim, Dong Hwan Hwang, Jong Sool Park, Kyeong Hun Lee, Jin Ho Kim
  • Patent number: 10302178
    Abstract: An outer race assembly for a continuously variable transmission includes a hydraulic cavity housing, a first radially outer race structure spaced along an axis from a second radially outer race structure to form a radially outer race, and planetary members in rolling contact with the radially outer race. The first radially outer race structure includes nesting engagement with the hydraulic cavity housing, and a hydraulic cavity sealed between the hydraulic cavity housing and the first radially outer race structure to control axial movement of the first radially outer race structure.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: May 28, 2019
    Assignee: Orbital Traction, Ltd.
    Inventors: Joseph D. Kliewer, Mark M. Koeroghlian
  • Patent number: 10293827
    Abstract: A system comprising a speed controller configured to generate a speed controller powertrain signal in order to cause a powertrain to develop drive torque and cause a vehicle to operate in accordance with a target speed value. The system generates a signal indicative of a rate of acceleration of the vehicle, and is configured to command a powertrain to develop an amount of positive drive torque according to the speed controller powertrain signal in dependence at least in part on the signal indicative of the rate of acceleration of the vehicle.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: May 21, 2019
    Assignee: Jaguar Land Rover Limited
    Inventors: Jonathan Woodley, Andrew Raftry
  • Patent number: 10295354
    Abstract: A computing device detects that an ignition switch of the vehicle was activated, wherein the vehicle includes a navigation device. The computing device requests a destination from the navigation device. The computing device interlocking, an operation of the vehicle based on determining that the destination is not valid.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: May 21, 2019
    Assignee: International Business Machines Corporation
    Inventors: Daniel J. Buvid, Eric J. Campbell, Tyler Jandt, Joseph Kuczynski
  • Patent number: 10295001
    Abstract: A control device of a lock-up clutch according to the disclosure is mounted on a vehicle including an engine, a transmission, a fluid-type power transmitting device interposed between the engine and the transmission, and the lock-up clutch provided on the fluid-type power transmitting device. The control device includes: a controller configured to slip-engage the lock-up clutch when accelerator opening of the vehicle changes in an accelerating direction, and configured to make a slip-engagement amount larger when a state of the fluid-type power transmitting device when the accelerator opening of the vehicle changes in the accelerating direction is a driven state than the slip-engagement amount when the state of the fluid-type power transmitting device is a driving state.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: May 21, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takayuki Ando, Seiji Kuwahara, Seiji Masunaga, Tsubasa Kato, Yuki Aratsu
  • Patent number: 10288170
    Abstract: A method for automatic calibration of a position detection sensor of an automatic transmission including a gearshift actuator, the method including registering, using the position detection sensor, the position of the gearshift actuator upon power-up of the transmission; and performing a calibration of the position detection sensor if the registered position of the gearshift actuator is outside a predetermined expected position range of the gearshift actuator or within a predetermined abnormal position range of the gearshift actuator.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: May 14, 2019
    Assignee: Volvo Truck Corporation
    Inventors: Lars Karlsson, Johan Bjernetun
  • Patent number: 10286911
    Abstract: The present disclosure provides a control method for an engine and a transmission. The control method may include: determining whether a current mode corresponds to a coasting mode; outputting a neutral operation signal to the transmission when the current mode corresponds to the coasting mode; determining whether an operation condition corresponds to a coasting mode release condition based on the signal of each sensor; outputting a D-stage connection signal to the transmission and outputting an engine torque limitation signal to the engine when the operation condition corresponds to the coasting mode release condition; determining whether the operation condition corresponds to a release of the engine torque limitation condition according to an entry of D stage and the signals of the engine RPM and turbine RPM; and outputting a normal operation signal to the engine when the operation condition corresponds to the release of the engine torque limitation condition.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: May 14, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Sangjun Park, Byeong Wook Jeon, Kwang Hee Park
  • Patent number: 10279796
    Abstract: Disclosed is a method for control of a vehicle with a drive system comprising a planetary gear and a first and second electrical machine, connected with their rotors to the components of the planetary gear, a braking of the vehicle towards stop occurs by way of a distribution of the desired braking torque between the first and the second electrical machines, and wherein such electrical machines are controlled to transmit a total torque to an output shaft of the planetary gear, which corresponds to the desired braking torque at least to one predetermined low speed limit, before the vehicle stops.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: May 7, 2019
    Assignee: Scania CV AB
    Inventors: Johan Lindström, Mathias Björkman, Mikael Bergquist, Niklas Pettersson
  • Patent number: 10274028
    Abstract: The present disclosure is configured to include a slip entry determining step of determining, by a controller, whether a driver in a full-lock control releases an accelerator pedal to thereby enter into a micro-slip control; a monitoring step of monitoring, by the controller, whether the release of the clutch occurs, in case of entering into the micro-slip control as a result of performing the slip entry determining step; a control amount adjusting step of resetting a feedback amount of a clutch control torque in the case that the release of the clutch occurs; and a clutch control step of controlling the clutch according to the clutch control torque as reset by the control amount adjusting step to thereby prevent or minimize the release of the clutch.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: April 30, 2019
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Sung Hyun Cho
  • Patent number: 10272918
    Abstract: Aspects of the present invention relates to a vehicle control system (1) for controlling a vehicle transfer case (3). The transfer case (3) is operable in a high range and a low range. The vehicle control system (1) is configured to output a range change signal to implement a transfer case range change. The vehicle control system (1) also outputs a brake control signal for controlling vehicle braking during the range change. The present invention also relates to a vehicle (5) and a related method of operating a vehicle control system (1) and optionally also a transmission (7).
    Type: Grant
    Filed: July 24, 2014
    Date of Patent: April 30, 2019
    Assignee: JAGUAR LAND ROVER LIMITED
    Inventors: Simon Sutton, Malkit Ram, Sam Burt, Steve Mullane
  • Patent number: 10274079
    Abstract: An electronic control unit is configured to set a target torque phase time which is used in torque phase control based on an output shaft torque difference. The electronic control unit sets the target torque phase time to be longer when the output shaft torque difference is large than when the output shaft torque difference is small. Accordingly, since the target torque phase time can be appropriately set, it is possible to achieve both of preventing a sudden change in driving force and torsion vibration of an output shaft and preventing a decrease in drivability due to hesitation at the same time. Sudden change in driving force and torsion vibration of the output shaft occur when the difference in driving force between before and after a gear shift is large. Hesitation occurs when the difference in driving force between before and after the gear shift is small.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: April 30, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohiro Chimbe, Norihiro Tsukamoto, Keisuke Ota, Tomohiro Asami
  • Patent number: 10259323
    Abstract: A vehicle having an electronic, automatic transmission incorporates a safety stop system. A position sensor or sensors are mounted onto the vehicle and are in communication with an electric controller. The electric controller in turn is operatively connected to the actuation solenoids in the hydraulic transmission. When a safety violation occurance is detected, then the electric controller either slows the speed of the vehicle or stops the vehicle through the transmission.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: April 16, 2019
    Assignee: Powertrain Control Solutions, LLC
    Inventor: Charles R. Turner
  • Patent number: 10260628
    Abstract: A method of controlling a pulley ratio of a continuously variable transmission vehicle, includes: sensing, by a controller, whether or not the position of a shift lever switches to a manual range, fixing, by the controller, a pulley ratio of a continuously variable transmission, when the position of the shift lever switches to the manual range, as a result of sensing, re-adjusting, by the controller, set pulley ratios of a plurality of manual shift positions based on the fixed pulley ratio of the continuously variable transmission, after the fixation, and controlling, by the controller, the continuously variable transmission at the re-adjusted pulley ratio of a target manual shift position, when manual shifting is required, after re-adjustment.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: April 16, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jun Sung Park, Ho Young Kim, Chan Hee Won, Kyung Eup Kim
  • Patent number: 10253876
    Abstract: A vehicle regenerative speed control device is provided for suppressing undershooting, in which an actual transmission input rotational speed falls below a lower-limit rotational speed, when decreasing a transmission input rotational speed based on a request for a decrease in the regeneration amount during regenerative speed control. The vehicle regenerative speed control device includes a controller which performs a regenerative speed control for downshifting a continuously variable transmission to a low gear ratio side and increasing a rotational speed of a transmission input shaft to which a motor generator is connected when there is a request for an increase in the regeneration amount while decelerating.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: April 9, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takanobu Mouri, Takahiro Yoshino, Yuuzou Kageyama, Masashi Ono, Hideki Maruyama, Takuya Ishizuka
  • Patent number: 10253879
    Abstract: Provided is a transmission control system that enables more precise control of the transmission ratio. This transmission control system is provided with a motor, an actuator, a transmission, a position sensor, a current sensor, and a control unit. The control unit includes: a drive unit that drives the motor while the vehicle is stopped; and a first estimation unit that estimates the initial transmission ratio, which indicates the transmission ratio when the ignition switch is turned on, on the basis of a rotation position detected by the position sensor, a load current detected by the current sensor, and a characteristic curve over a period during which the drive unit is operating.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: April 9, 2019
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Hiroyuki Sakamoto, Hideki Sekiguchi, Fumihiro Ohsawa, Yuta Tanaka
  • Patent number: 10253708
    Abstract: A shift control system which can reduce a shift shock is provided. A target torque determiner set a target torque of an engine based on an accelerator position. An actual torque determiner calculates an actual torque of the engine in the inertia phase. A controller calculates an integrated value of a difference between the target torque and the actual torque from a commencement of the inertia phase to a predetermined time point before a termination of the inertia phase, and corrects the target torque in a remaining period between the predetermined time point and the termination of the inertia phase.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: April 9, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Watanabe, Akira Eiraku