With Transmission Control Patents (Class 477/15)
  • Patent number: 11680638
    Abstract: The present invention provides a shift control method implemented in a vehicle equipped with an automatic transmission for controlling an input shaft rotation speed to a target input shaft rotation speed during a shift. The method includes setting of a basic target synchronization rotation speed that is a basic target value of the input shaft rotation speed during the shift, and setting of a corrected target input shaft rotation speed as the target input shaft rotation speed when the shift is a downshift without a requirement for a driving force of the vehicle, The corrected target input shaft rotation speed is obtained by decreasingly correcting the basic target synchronization rotation speed. Further, a decreasing correction amount of the basic target synchronization rotation speed is set so as to become larger as a deceleration of the vehicle becomes larger.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: June 20, 2023
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Hiroki Shimoyama, Munetoshi Ueno, Takefumi Suzuki
  • Patent number: 11677340
    Abstract: A motor drive device that includes: a power control unit that drives a motor, which configures a motive power source of a moving body, by supplying a drive signal modulated according to a carrier frequency; a memory; and a processor that is coupled to the memory, the processor being configured to: predict torque demand on the motor, and change the carrier frequency of the power control unit in a case in which an increase in the torque demand on the motor has been predicted.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: June 13, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hidetoshi Katoh, Masayuki Yoshikawa, Kenichi Ichinose, Hiroyuki Nishimura, Kazuhisa Ori
  • Patent number: 11661105
    Abstract: A steering device includes: an electric motor configured to apply a driving force to cause a wheel of a vehicle to roll; a transmission unit configured to transmit the driving force of the electric motor to the wheel; an input determination unit 221 configured to determine whether an excessive external force equal to or greater than a predetermined force is input, or likely to be input, to the transmission unit via the wheel while the electric motor is applying the driving force; and a final target current setting unit 23 configured to, in response to the input determination unit 221 determining that the excessive force is input, or likely to be input, to the transmission unit, reduce the driving force of the electric motor so that a load on the transmission unit does not exceed an upper limit that is preset according to strength of the transmission unit.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: May 30, 2023
    Assignee: HITACHI ASTEMO, LTD.
    Inventor: Akihiro Kogure
  • Patent number: 11490569
    Abstract: A pulley assembly is provided for mounting on a rotatable shaft of an agricultural harvester and is operable in a high-speed configuration or a low-speed configuration. The pulley assembly comprises a high-speed pulley with a high-speed running surface for receiving a drive belt when the pulley assembly is in the high-speed configuration and a low-speed pulley with a low-speed running surface for receiving a drive belt when the pulley assembly is in the low-speed configuration. The pulley assembly has three sets of teeth extending from surfaces of the two pulleys. In the low-speed configuration, the running surfaces of the low-speed pulley and high-speed pulley are axially aligned and the first set of teeth and the second set of teeth are engaged. In the high-speed configuration, the running surface of the high-speed pulley is exposed for receiving the drive belt.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: November 8, 2022
    Assignee: CNH Industrial America LLC
    Inventors: Charlotte Van de Wege, Ruben Vancoillie
  • Patent number: 11292452
    Abstract: Systems and methods for operating a vehicle that includes an engine and an electric machine are described. In one example, torque requests are aligned in time to compensate for a delay that may be caused by broadcasting one or more torque commands over a controller area network or another type of communication link. The torque requests may be aligned via delaying an engine torque request and predicting an electric machine torque.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: April 5, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: Fazal Urrahman Syed, Rajit Johri, Justin Panhans, Minku Lee, Joshua Nicholas Dewalt
  • Patent number: 11225227
    Abstract: The driving force control device includes: a requested driving force calculation unit configured to calculate requested driving force requested to the vehicle, in a coasting state where neither an accelerator operation nor a brake operation is performed by a driver; a power train control unit configured to control a gear ratio of the power train on the basis of the requested driving force and driving force that is achieved by the power train in the coasting state; a braking force calculation unit configured to calculate braking force required for achieving the requested driving force, when the requested driving force is smaller than driving force that is achieved by the power train at a gear ratio set by the power train control unit; and a brake control unit configured to cause the brake to generate the braking force calculated by the braking force calculation unit.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: January 18, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shin Noumura
  • Patent number: 11199250
    Abstract: A hybrid module for a vehicle includes a torque converter and an electric motor. The torque converter includes an impeller shell and a cover. The cover is fixed to the impeller shell to form at least a portion of an outer shell for the torque converter. The electric motor includes a rotor supported on a rotor carrier. The cover and the rotor carrier are integrally formed from a same piece of material. In an example embodiment, the hybrid module includes a resolver rotor fixed to the rotor carrier. In some example embodiments, the hybrid module includes a cover disk, fixed to the rotor carrier and extending radially inward to form a portion of the outer shell.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: December 14, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Maximilian Podschwadt, Markus Steinberger, Matthew Payne, John Ramsey
  • Patent number: 11046303
    Abstract: Systems and methods for operating a vehicle that includes an engine and an integrated starter/generator are described. In one example, a torque output of an electric machine is increased via a rotation ratio changing device to reduce engine noise and vibration during engine starting. After the engine is started, the rotation ratio changing device is adjusted so that the engine and the electric machine rotate at a same speed.
    Type: Grant
    Filed: March 12, 2019
    Date of Patent: June 29, 2021
    Assignee: Ford Global Technologies, LLC
    Inventor: Lars Niklas Pettersson
  • Patent number: 10573102
    Abstract: A fuel maintenance guide system is provided in a hybrid vehicle in which a shift to a fuel maintenance mode prioritizing consumption of fuel is automatically performed under a predetermined condition regardless of a driver's intention. The fuel maintenance guide system includes an information notification unit configured to perform notification of information urging consumption of the fuel, and a control unit configured to estimate a time to shift automatically to the fuel maintenance mode and to begin to perform notifying actuation of the information notification unit a predetermined period of time before the estimated time.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: February 25, 2020
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Hideki Mito, Naoki Miyamoto
  • Patent number: 10491211
    Abstract: A trigger assembly, for use with a power tool having an electric motor, includes a trigger, a conductor coupled for movement with the trigger, and a printed circuit board. The printed circuit board has an inductive sensor thereon responsive to relative movement between the conductor and the inductive sensor caused by movement of the trigger. An output of the inductive sensor is used to activate the electric motor.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: November 26, 2019
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventors: John S. Dey, IV, Jacob P. Schneider
  • Patent number: 10166968
    Abstract: A method for controlling a coasting drive of an environmentally friendly vehicle includes: calculating a coasting velocity of the environmentally friendly vehicle at a deceleration event point based on a target coasting distance up to the deceleration event point and a gradient at the deceleration event point; calculating a control target velocity of the environmentally friendly vehicle based on a target velocity of the environmentally friendly vehicle at the deceleration event point and the calculated coasting velocity; and determining control torque to adjust a velocity of the environmentally friendly vehicle to the target velocity to be output to a powertrain of the environmentally friendly vehicle based on the calculated control target velocity.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: January 1, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Do Hee Kim, Jaekyu Hyun, Kyu Hwan Jo
  • Patent number: 9994210
    Abstract: A method for ascertaining a setpoint trajectory of a motor vehicle, an initial setpoint trajectory being planned and transmitted to an evaluation unit, a curve of a power characteristic variable, which is implementable as a function of the initial setpoint trajectory, being received from the evaluation unit, and a corrected setpoint trajectory being determined therefrom as a function of the ascertained implementable curve of the power characteristic variable.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: June 12, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventor: Andreas Erban
  • Patent number: 9975557
    Abstract: A method of controlling an electric vehicle transmission includes: a torque-securing step of securing a predetermined spare torque to be generated by a motor in accordance with a current motor torque when a controller determines that there is a need for downshift from an upper gear step to a lower gear step; a slip-controlling step of generating a friction force through a servo clutch applying a friction force between an input shaft and a servo driving gear of a pair of servo gears; a shifting-to-neutral step of shifting to a neutral gear by disengaging a synchronizer for the upper gear step; a motor-synchronizing step of synchronizing a rotational speed of the motor with a desired speed of a lower gear step using the spare torque of the motor secured in the torque-securing step; a gear-engaging step of engaging a synchronizer for the lower gear step; and a clutch-disengaging step of finishing shifting by disengaging the servo clutch.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: May 22, 2018
    Assignees: HYUNDAI MOTOR COMPANY, RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Jong Yun Park, Kyung Ha Kim, Jae Young Choi, Yeon Ho Kim, Sung Wha Hong
  • Patent number: 9902389
    Abstract: A vehicle drive control device performs acceleration/deceleration running by alternately repeating acceleration running and deceleration running, wherein it compares between an efficiency of the motor at a first operation point determined by a rotation speed and a torque of a motor and an efficiency of the motor at a second operation point for outputting a higher torque than the first operation point, and if a difference between the efficiencies is greater than a determination value, the acceleration running at the second operation point and the deceleration running being repeated, the second operation point being set a maximum efficiency line of the motor with the rotation speed and the torque of the motor as parameters to perform the acceleration running, and if acceleration during the acceleration running becomes larger than an acceleration limit value, a rotating machine acting at least as an electric generator generating electricity to charge a battery.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: February 27, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Terufumi Miyazaki, Yukihiko Ideshio, Toshihiko Kamiya, Shingo Eto, Hironori Asaoka, Yasuyuki Kato, Seigo Kanou, Makoto Iwanaka
  • Patent number: 9874252
    Abstract: An electronic, high-efficiency vehicular transmission, an overrunning, non-friction coupling and control assembly and switchable linear actuator device for use in the assembly and the transmission are provided. The device controls the operating mode of at least one non-friction coupling assembly. The device has a plurality of magnetic sources which produce corresponding magnetic fields to create a net translational force. The net translational force comprises a first translational force caused by energization of at least one electromagnetic source and a magnetic latching force based upon linear position of a permanent magnet source along an axis.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: January 23, 2018
    Assignee: Means Industries, Inc.
    Inventors: John W. Kimes, Patrick J. McCleer
  • Patent number: 9809225
    Abstract: A drive force control device for a vehicle having a continuously variable transmission that varies an output rotation of a motive force source and transmits a rotation after variation to a drive wheel includes an accelerator pedal opening sensor that detects an accelerator opening of an accelerator pedal with which the vehicle is provided, and a programmable controller programmed to calculate a target drive force on the basis of the accelerator opening, calculate a target transmission input rotation speed on the basis of the target drive force, calculate a target transmission input torque on the basis of the target drive force, control a speed ratio of the continuously variable transmission to realize the target transmission input rotation speed, and control an output torque of the motive force source to realize the target transmission input torque.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: November 7, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Takahiro Yoshino
  • Patent number: 9783191
    Abstract: A control system for a hybrid vehicle, the hybrid vehicle includes an engine, a first motor, a second motor, a differential mechanism, and a clutch. The control system includes an electronic control unit. The electronic control unit is configured to: (a) set an EV mode in which a vehicle travels at least by drive power of the second motor among the first motor and the second motor in a state that the engine stops, (b) prohibit setting of the EV mode in a state that the clutch is fully engaged when a vehicle speed is at least equal to a predetermined first vehicle speed threshold value, and (c) prohibit setting of the EV mode in a state that the clutch is disengaged when the vehicle speed of the vehicle that travels in the EV mode is at most equal to a predetermined second vehicle speed threshold value.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: October 10, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kensei Hata, Yuji Iwase, Yosuke Suzuki, Koichi Kato, Seitaro Nobuyasu, Taro Moteki
  • Patent number: 9222380
    Abstract: A plug-in hybrid electric vehicle powertrain includes an internal combustion engine and an electric vehicle traction motor, an engine lubrication oil pump in fluid communication with a lubrication oil flow circuit for the internal combustion engine, an electric oil pump drive motor drivingly connected to the lubrication oil pump, and a powertrain control module. The powertrain control module is configured to start the electric oil pump drive motor immediately upon the initial start of the vehicle.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: December 29, 2015
    Assignee: Volvo Car Corporation
    Inventors: Dan Persson, Roger Boden, Tomas Ivarsson, Per Holmqvist, Lars Berggren, Ingvar Akesson, Per Kylstad
  • Patent number: 9211855
    Abstract: When the fuel supply to an internal combustion engine has stopped due to a vehicle starting to decelerate or the like, and the speed of the vehicle is greater than a predetermined speed, then a controller causes a power generator to operate in a first power generating mode. The controller charges a capacitor by using regenerative power that is output from the power generator to supply power from the power generator to the capacitor via a DC-DC converter. When the stopping of the fuel supply to the internal combustion engine is cancelled as a result of the engine revolution speed reaching a predetermined revolution speed (for example, an idling revolution speed) in conjunction with the speed of the vehicle dropping to the predetermined speed, the power generator can be kept in the first power generating mode.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: December 15, 2015
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yasuhiro Hara, Hideto Yamamoto, Tomohiro Arakawa
  • Patent number: 9175765
    Abstract: The present invention is capable of suppressing gear shift shocks or delays in acceleration with no interruption of driving force and reducing the weight. Disclosed is a transmission which is provided, with multiple stage shift gears so arranged to shift a number of dog clutches to shift a gear to the upper stage of the multiple stage shift gears, and is characterized in that a guide part is provided to a shift operation section and the dog clutches on each of the sages so as to move the lower dog clutch in a neutral direction by a coasting torque acting on the lower stage by a shift rotation of the upper stage to release a meshing engagement when meshing engagements of the lower and upper dog clutches are simultaneously performed by an operation of the shift operation section.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: November 3, 2015
    Assignee: IKEYA FORUMLA CO., LTD.
    Inventors: Shinji Ikeya, Masao Teraoka
  • Patent number: 9033851
    Abstract: A motor drive assembly can prevent a two-way roller clutch of the current speed ratio and a two-way roller clutch of the next speed ratio from engaging simultaneously, and includes a first-speed friction plate formed with engaging protrusions on the first-speed side, and a shift ring formed with engaging recesses. While the shift ring is in a first-speed shift position SP1f, the engaging protrusions are adapted to be engaged in the engaging recesses, thereby preventing rotation of the shift ring relative to the first-speed friction plate. The shift ring is provided with projections on its inner periphery. The drive assembly further includes an annular protrusion formed with cutouts. When the projections are axially and circumferentially displaced from the respective cutouts, the projections are adapted to interfere with the annular protrusion, thereby preventing axial movement of the shift ring between the first-speed shift position SP1f and a second-speed shift position SP2f.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: May 19, 2015
    Assignee: NTN Corporation
    Inventors: Yoshinori Itakura, Guodong Li
  • Publication number: 20150126328
    Abstract: Systems and methods for improving operation of a hybrid vehicle are presented. In one example, a method for transitioning between driveline braking and wheel brakes is provided.
    Type: Application
    Filed: January 13, 2015
    Publication date: May 7, 2015
    Inventors: Adam Nathan Banker, Alex O'Connor Gibson, Jeffrey Allen Doering, James William Loch McCallum, David Oshinsky
  • Patent number: 9022899
    Abstract: Control apparatus for hybrid vehicles are described which reduce the heat generated by a clutch and improve the response of the hybrid vehicle when an operator requests a high degree of acceleration while starting the engine and the transmission is required to perform a shift-down. In one embodiment, when the engine is required to start while the transmission is required to perform a shift-down action, the control apparatus holds a hydraulic pressure of a releasing side clutch of the transmission at a predetermined lowest stand-by value preventing a slipping action of the releasing side clutch, while a clutch K0 between the motor and engine is placed in a slipping state, and reduces the hydraulic pressure of the releasing side clutch from the lowest stand-by value in the slipping state of the clutch K0 after the clutch K0 is placed in the fully engaged state.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: May 5, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takahiko Tsutsumi, Toshio Sugimura, Seiji Kuwahara, Koki Minamikawa, Shun Sato
  • Patent number: 9005076
    Abstract: A method for operating a powertrain system includes executing a transmission shift between an initial electrically-variable transmission (EVT) range and a target EVT range. The transmission shift includes transitioning to operating with three speed degrees of freedom including controlling speed of a second torque machine to synchronize speed of an oncoming clutch associated with the target EVT range and coincidentally controlling speeds of a first torque machine and an engine to achieve a preferred speed of the output member of the transmission. The transmission shift further includes controlling torque output from the first torque machine in response to an output torque request, and activating the oncoming clutch upon synchronizing the speed of the oncoming clutch. Subsequent to the transmission shift, the powertrain system is operated in the target EVT range.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: April 14, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Brendan M. Conlon, Jy-Jen F. Sah, Alan G. Holmes
  • Publication number: 20150087476
    Abstract: A rear drive unit for a hybrid electric motor vehicle is provided. The rear drive unit comprises a rear link/drive shaft and an electrical motor/generator.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 26, 2015
    Inventors: Ahmet DZAFIC, Mathias JORGENSSON
  • Patent number: 8989931
    Abstract: A method for controlling the idle speed in a hybrid vehicle in which at least two power plants contribute together or separately to driving the hybrid vehicle, and a setpoint value is compared to an actual value for controlling the idle speed, the setpoint rotational speed being set as a function of the comparison by changing at least one intensification factor of the control. To adapt the control dynamics to the actual transmission characteristics of the first of the two power plants, the idle speed control for the at least two power plants is carried out simultaneously, the at least one intensification factor being continuously adapted to the power output of a first of the two power plants.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: March 24, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Andreas Seel
  • Patent number: 8979705
    Abstract: A system and a method for controlling an aircraft engine starter/generator. The system includes an AGB of fixed gear ratio for coupling mechanically to a turbine shaft of the engine to enable the engine to be started, a gearbox having multiple gear ratios mechanically coupled to a gearwheel of the AGB, a starter/generator mechanically coupled to a gearwheel of the gearbox, and a controller to cause the gear ratio of the gearbox to be changed as a function of the mode of operation of the starter/generator.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: March 17, 2015
    Assignee: Snecma
    Inventors: Jean Pierre Galivel, Bruno Gaully, Julien Ricordeau
  • Patent number: 8965614
    Abstract: A hybrid vehicle is provided in which after a determination is made as to whether the remaining capacity is higher than a first threshold value, any one of a first running mode, a second running mode, and a third running mode is selected depending on first speed, second speed, or third speed so that the vehicle runs in the mode, whereby the vehicle can run by easily selecting an appropriate series hybrid mode or an appropriate parallel hybrid mode in each range depending on whether the remaining capacity is higher than the first threshold value, and running control can be made stable and easy.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: February 24, 2015
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventor: Yukihiro Nissato
  • Publication number: 20150051046
    Abstract: A vehicle includes an internal combustion engine coupled to an input member of a multi-mode transmission configured to transfer torque to an output member coupled to a ground wheel with the internal combustion engine in an ON state generating an input torque. A method for controlling the vehicle includes identifying an undesirable operating region including an input/output torque region for operating the multi-mode transmission. In response to an operator request for creep torque, motor torque is controlled from a torque machine coupled to the multi-mode transmission such that the multi-mode transmission is operating outside the undesirable operating region while a mechanical braking torque to the ground wheel is coincidentally controlled in response to an operator-commanded braking, the input torque from the engine, and the motor torque from the torque machine.
    Type: Application
    Filed: August 15, 2013
    Publication date: February 19, 2015
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: JEREMY WISE, JY-JEN F. SAH, ANTHONY H. HEAP
  • Patent number: 8956263
    Abstract: A method for controlling a powertrain system including an internal combustion engine coupled to a multi-mode transmission in response to a command to execute a shift from a first EVT Mode range to a second EVT Mode range includes executing a first shift from the first EVT Mode range to an intermediate transmission range. The multi-mode transmission operates in the intermediate transmission range and the engine is controlled at an engine torque command that corresponds to an output torque request. A second shift is executed from the intermediate transmission range to the second transmission range. The powertrain system operates in the second transmission range to transfer torque to an output member of the transmission.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: February 17, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Anthony H. Heap, Sean W. McGrogan, Krunal P. Patel
  • Patent number: 8932181
    Abstract: It is provided a control device of a vehicle drive device having an electric motor connected via an inverter to an electric-motor power source, an inverter smoothing capacitor connected to the inverter of the electric-motor power source side thereof, and a transmission making up a portion of a power transmission path between the electric motor and drive wheels, the control device being configured to make an output torque of the electric motor smaller as the rotation speed of the electric motor being higher, and to make a gradient of an output torque reduced amount of the electric motor larger as the rotation speed of the electric motor being higher if a rotation speed of the electric motor rises at the time of upshift of the transmission higher than a rotation speed before the shift.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: January 13, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuyuki Shiiba, Takeshi Kanayama, Taiyo Uejima, Daiki Sato
  • Publication number: 20140336000
    Abstract: The apparatus, comprised of a housing, at least one set of fixed pulleys and corresponding mobile pulleys and the means of controllably coupling the rotational movement to, through and from it reduces the energy required for the self-propelling function of a vehicle employing rotational movement for the said function by at least fifty percent regardless of the said vehicle's internal type of power source and previous amount of energy used for the said function.
    Type: Application
    Filed: August 27, 2013
    Publication date: November 13, 2014
    Inventor: Stefan Stuparu
  • Patent number: 8880303
    Abstract: A vehicle control unit and a vehicle equipped with the vehicle control unit are provided, the vehicle control unit being capable of preventing a shift change from being permitted in a direction opposite to a vehicle traveling direction caused by an erroneous operation of a shift lever during a traveling mode.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: November 4, 2014
    Assignee: Mitsubishi Nichiyu Forklift Co., Ltd.
    Inventors: Naoki Ishikawa, Katsumi Ueda, Masanobu Seki
  • Patent number: 8874290
    Abstract: It is provided a control device for a vehicle power transmission device having a stepped automatic transmission making up a portion of a power transmission path between an engine and a drive wheel, the control device setting a shift point of the automatic transmission in accordance with a request drive force of a driver and a vehicle speed, the control device setting a shift point of the automatic transmission in accordance with a rotation speed of the engine and a vehicle speed instead of the request drive force, if a vehicle is in a predetermined fuel consumption priority running state.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: October 28, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenta Kumazaki, Tooru Matsubara, Atsushi Tabata
  • Patent number: 8868271
    Abstract: Disclosed herein is a motor control system and method for a vehicle with a transmission comprising for improving the quality of shifting, by improving precision in shifting control with precise and active motor torque control by calculating a maximum and a minimum motor torque in response to determining a power-on up-shift for increasing a shifting gear and a power-off down-shift for decreasing the shifting gear in shifting of the vehicle.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: October 21, 2014
    Assignee: Hyundai Motor Company
    Inventor: Sang Joon Kim
  • Patent number: 8868252
    Abstract: A microprocessor driven two dimensional search engine examines transmission operating points within a plurality of search range spaces and assists in determining properties associated with the driveline at various operating points within the space. The size of the space is reduced by rearrangement of data.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: October 21, 2014
    Assignees: GM Global Technology Operations LLC, Daimler AG, Chrysler Group LLC, Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Anthony H. Heap, Kee Yong Kim, Bin Wu
  • Patent number: 8827867
    Abstract: A method of controlling a transmission of a vehicle powered by an electric motor may include initiating a gear engagement in the transmission. The method may also include activating a torque jog in the electric motor to assist with the gear engagement. The torque jog may include a fluctuation in the torque output of the electric motor.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: September 9, 2014
    Assignee: Proterra, Inc.
    Inventor: Matthew Simonini
  • Publication number: 20140228169
    Abstract: The invention relates to an electric drive system for a battery-powered light vehicle, comprising at least one drive motor, a transmission driven by the drive motor for selecting at least two gears, and an actuator for shifting the transmission into the shifting positions, characterized in that an automated transmission, in particular having a freewheel mechanism, is provided.
    Type: Application
    Filed: August 30, 2012
    Publication date: August 14, 2014
    Applicant: CPM COMPACT POWER MOTORS GmbH
    Inventors: Heinz Leiber, Thomas Leiber, Jochen Keller
  • Patent number: 8770053
    Abstract: A transmission has a simple structure and can be produced at a low cost. A second electromagnetic clutch is shut off at a timing when an electric motor is decelerated and before selecting motion is finished, and thereafter, a shift/select shaft is moved to a terminal end position of the selecting motion with an inertia of a driven part (a second output hub) of the second electromagnetic clutch. At a timing after a predetermined period has passed from the timing, a first electromagnetic clutch for the next shifting motion is connected. The electric motor is driven synchronously with the end of the selecting motion or immediately in response to the end, thereby to start the next shifting motion. In this manner, gear change can be rapidly conducted.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: July 8, 2014
    Assignee: JTEKT Corporation
    Inventor: Takafumi Uemoto
  • Patent number: 8768584
    Abstract: Systems, methods and controllers for facilitating or providing a more efficient operation of a vehicle are disclosed. An accelerator input is detected from an accelerator sensor and it is determined whether the accelerator input is within a first range of values or within a second range of values. If it is determined that the accelerator input is within the first range of values, an engine is controlled to provide limited or no power to a transmission. If it is determined that the accelerator input is within the second range of values, the engine is controlled to provide a substantially constant power to the transmission.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: July 1, 2014
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventor: Mohammad E. Dufford
  • Patent number: 8758193
    Abstract: A first engine ENG1, transmission TM1, one-way clutch OWC1, driving target member 11 connected to an output member 121 of the one-way clutch, main motor/generator MG1 connected to the member 11, sub motor/generator MG2 connected to an output shaft S1 of the engine ENG1, battery 8, and controller 5. The controller 5 performs EV running, engine running, and series running where power generated by a sub motor/generator MG2 using the power of the first engine ENG1 is supplied to the main motor/generator MG1. Series running is carried out between EV running and the engine running when switching from EV running to engine running is carried out. A rotational speed of the engine and/or a transmission ratio of the transmission are/is controlled so that the rotational speed input to the input member is less than the rotational speed of the output member 121 during the series running control.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: June 24, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuki Ichikawa, Fumiyasu Suga
  • Patent number: 8755980
    Abstract: A vehicle with a transmission having a crankshaft and an output shaft. A clutch located between the output shaft and a drive wheel is engaged and disengaged according to a rotational speed of the output shaft. An idle speed control device performs idle speed control to adjust an idle rotational speed of an engine. An electronic control unit (ECU) suppresses or stops the idle speed control when the clutch is engaged, or when an abnormality in the transmission is detected.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: June 17, 2014
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Yuichiro Sawada
  • Publication number: 20140162840
    Abstract: A method and system for controlling anti-jerk of a hybrid vehicle reduce shift vibration and shock by reverse phase controlling a drive motor during gear-shifting of a hybrid vehicle without a torque converter. The method includes determining whether a gear-shifting command is outputted from a transmission control unit of the hybrid vehicle; when it is determined that the gear-shifting command is outputted, confirming a gear-shifting range divided into at least three phases in accordance with the gear-shifting command; determining whether the corresponding divided gear-shifting range is an anti-jerk allowed gear-shifting range; and when it is determined that the corresponding gear-shifting range is the anti-jerk allowed gear-shifting range, reverse phase controlling a drive motor of the hybrid vehicle by a predetermined value in order to reduce or attenuate vibration and shock generated in the corresponding gear-shifting range.
    Type: Application
    Filed: October 29, 2013
    Publication date: June 12, 2014
    Applicants: Kia Motors Corporation, Hyundai Motor Company
    Inventors: Joung Chul Kim, Tai Jin Jugn
  • Patent number: 8721496
    Abstract: A system and method for controlling a hybrid electric vehicle during regenerative braking is provided. The system and method include a brake controller adapted to cause, for a selected transmission gear, a first torque ratio to be applied to a regenerative brake system during regenerative braking and a second torque ratio, different from the first torque ratio, to be applied when the vehicle is not regenerative braking. The first torque ratio results in an increased braking torque generated by the regenerative brake system compared with application of the second torque ratio.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: May 13, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Bernard D. Nefcy, Daniel Scott Colvin, Marvin Paul Kraska, Walter Joseph Ortmann, Mark Steven Yamazaki, Fazal Urrahman Syed
  • Patent number: 8676418
    Abstract: A control for a hybrid vehicle includes; obtaining information that an EV switch that is operated when a travel of the vehicle in an EV mode in which priority is given to an EV travel in which the vehicle travels by a motive power only from a rotary electric machine is to be selected has been operated; starting a permission preparation control for causing a transition from a state in which a situation of the vehicle satisfies a predetermined reservation condition for reserving the EV mode to a state in which the situation of the vehicle satisfies a predetermined permission condition for permitting the EV mode if the situation of the vehicle does not satisfy the permission condition but satisfies the reservation condition when the EV switch has been operated; and enabling to control the travel of the vehicle in the EV mode if the predetermined permission condition is satisfied.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: March 18, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Masashi Yoshimi
  • Patent number: 8663065
    Abstract: A drivetrain of a motor vehicle, with a hybrid drive, comprising an internal combustion engine and an electric machine and a semi-automatic group transmission. The semi-automatic group transmission comprises at least a main transmission and a downstream group in drive connection downstream with the main transmission. An input shaft of the semi-automatic group transmission is connected, via a controllable starting clutch, to the internal combustion engine of the hybrid drive and an output shaft of the semi-automatic group transmission is connected to an axle drive. Depending on the shift position of at least one shifting element, the electric machine can be coupled to the force flow or the torque flow of the drivetrain between the main transmission and the downstream group of countershaft design and/or between the downstream group of a countershaft design and the axle drive.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: March 4, 2014
    Assignee: ZF Friedrichshafen AG
    Inventor: Johannes Kaltenbach
  • Publication number: 20140051548
    Abstract: A bicycle drive unit basically includes a motor and a crank axle torsion sensor unit. The motor has a crank axle receiving hole that is arranged for installing a crank axle. The crank axle torsion sensor unit is at least partially disposed inside of the crank axle receiving hole in between the motor and the crank axle.
    Type: Application
    Filed: June 6, 2013
    Publication date: February 20, 2014
    Inventors: Tetsuya HINO, Yusuke NISHIKAWA
  • Publication number: 20130316871
    Abstract: It is provided a control device of a vehicle drive device having an electric motor connected via an inverter to an electric-motor power source, an inverter smoothing capacitor connected to the inverter of the electric-motor power source side thereof, and a transmission making up a portion of a power transmission path between the electric motor and drive wheels, the control device being configured to make an output torque of the electric motor smaller as the rotation speed of the electric motor being higher, and to make a gradient of an output torque reduced amount of the electric motor larger as the rotation speed of the electric motor being higher if a rotation speed of the electric motor rises at the time of upshift of the transmission higher than a rotation speed before the shift.
    Type: Application
    Filed: February 2, 2011
    Publication date: November 28, 2013
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuyuki Shiiba, Takeshi Kanayama, Taiyo Uejima, Daiki Sato
  • Patent number: 8591378
    Abstract: A controller for a power transmission system that uses an engine and a motor as driving force sources to transmit power and that includes a transmission unit is provided. The transmission unit has a plurality of engagement devices and establishes a plurality of gears having different speed ratios by the frictional engagement devices. The transmission unit is arranged downstream of the driving force sources. The controller includes a torque transmission capacity setting unit that, when the transmission unit shifts gears, varies torque transmission capacities of the frictional engagement devices on the basis of an operating state of the motor and an operating state of the engine.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: November 26, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Aw Co., Ltd.
    Inventors: Tooru Matsubara, Atsushi Tabata, Masakazu Kaifuku
  • Patent number: 8589039
    Abstract: A control device for automatic transmission includes a flow control mechanism for introducing a part of hydraulic oil discharged from a mechanical oil pump into the mechanical oil pump when a differential pressure between an upstream side and a downstream side of a narrow part provided in a discharge passage in which hydraulic oil discharged from the mechanical oil pump flows becomes larger than a predetermined value. Air mixed into the hydraulic oil is compressed by increasing a line pressure as a differential rotation speed increases when oil temperature of the hydraulic oil is equal to or higher than a predetermined oil temperature and an engine torque is equal to or lower than a predetermined engine torque.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: November 19, 2013
    Assignee: Jatco Ltd
    Inventors: Arata Nakamura, Masaki Watanabe, Kazuya Murota, Daisuke Kozuma, Toshinori Sasaki