Stepped Shift (epo/jpo) Patents (Class 903/919)
  • Patent number: 9031727
    Abstract: A vehicle running control device in a vehicle includes a power connecting/disconnecting device interrupting power transmission between an engine and drive wheels, the vehicle running control device providing free-run control of interrupting the power transmission with the power connecting/disconnecting device and stopping the engine during inertia running, the vehicle running control device being configured to determine a target vehicle deceleration at the start of the free-run control based on a vehicle speed and to estimate an estimated vehicle deceleration when the free-run control is started, before starting the free-run control, and when the estimated vehicle deceleration is closer to the target vehicle deceleration at the start of the free-run control, the free-run control being more easily provided.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: May 12, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Terufumi Miyazaki, Yukihiko Ideshio, Toshihiko Kamiya, Shingo Eto, Hironori Asaoka, Yasuyuki Kato
  • Publication number: 20150080162
    Abstract: A center distance D1 from a motor shaft connected to an electric motor and a generator shaft connected to a generator to a clutch shaft including a wet multiple disc clutch is set longer than a distance Dm from the axial center of the electric motor, that is, the axial center of the motor shaft to the outermost circumference of a housing, which houses the electric motor.
    Type: Application
    Filed: August 11, 2014
    Publication date: March 19, 2015
    Inventor: Sumio MOTOYAMA
  • Publication number: 20150021110
    Abstract: A driving device for a hybrid vehicle including a power transmission mechanism (10) that is connected to an engine (1) and transmits a rotation of the engine; a differential mechanism (20) that connects the power transmission mechanism to driving wheels (32); and a switching device (CL1, BK1) that performs speed change of the power transmission mechanism, wherein the differential mechanism includes a first rotary element (24) that is connected to an output element (13) of the power transmission mechanism, a second rotary element (21) that is connected to a first rotating electrical machine (MG1) and a third rotary element (23) that is connected to the second rotating electrical machine (MG2) and the driving wheels, and wherein the rotation of the output element of the power transmission mechanism is limited by the switching device.
    Type: Application
    Filed: February 1, 2012
    Publication date: January 22, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohito Ono, Yuji Iwase, Makoto Funahashi, Atsushi Tabata, Tooru Matsubara, Tatsuya Imamura, Koichi Okuda, Hideaki Komada
  • Patent number: 8795115
    Abstract: A hybrid dual configuration transmission for a vehicle having an electric motor, planetary gear set and a plurality of gear meshes is disclosed herein. The hybrid dual configuration transmission provides for a plurality of electrically variable transmission operating modes and a plurality of fixed gear operating modes. The hybrid dual configuration transmission may be operated utilizing exclusively the electric motor, exclusively an engine, or any combination of the electric motor and engine.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: August 5, 2014
    Assignee: Chrysler Group LLC
    Inventor: Dumitru Puiu
  • Patent number: 8634987
    Abstract: A creep travel capability of an electric vehicle is secured when an abnormality occurs in a brake sensor. When an accelerator operation amount reaches 0% in a low vehicle speed region, a target creep torque is set, whereupon a motor-generator is controlled toward the target creep torque. The target creep torque is reduced as a brake pedal is depressed in order to suppress heat generation and the like in the motor-generator during vehicle braking. Hence, in an electric vehicle in which the target creep torque is varied in accordance with the brake operation amount, when an abnormality occurs (step S11) in a brake sensor for detecting a brake operation amount, a preset prescribed creep torque is employed as the target creep torque regardless of the brake operation amount (step S15). The prescribed creep torque is set at a required magnitude for securing the creep travel capability.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: January 21, 2014
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Itaru Seta, Yosuke Ohtomo
  • Patent number: 8523736
    Abstract: A control apparatus for a vehicular power transmitting system includes a shifting-point changing portion configured to change a shifting point at which a determination to perform a shifting action of a transmission portion is made, such that a shifting portion is changed according to a shifting response of the transmission portion. Alternatively, the control apparatus includes a shift-control start-point changing portion configured to change a shift-control start point at which the determination to perform the shifting action is made, such that the shift-control start point is changed according to the shifting response of the transmission portion, and a compulsory shift-control starting portion configured to make the determination when an operating point of a differential portion electric motor has reached the shift-control start point.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: September 3, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tatsuya Imamura, Yuji Iwase, Atsushi Tabata, Kenta Kumazaki, Tooru Matsubara
  • Publication number: 20120214634
    Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes.
    Type: Application
    Filed: December 7, 2011
    Publication date: August 23, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Edward W. Mellet, James B. Borgerson, James M. Hart
  • Publication number: 20120196713
    Abstract: A kinetic hybrid device and method for a vehicle may include a planetary gear system configured as a continuously variable transmission comprised of three or four ports. The kinetic hybrid device and method may include a flywheel connected to a first port of the system, a final drive connected to a second port of the system, and the variator for the flywheel connected to a third or fourth port of the system. The prime mover and/or other power sources may share a port with the flywheel, but do not share a port with the final drive.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 2, 2012
    Inventors: Jing He, Hongping He
  • Publication number: 20120178568
    Abstract: An electric motor damping module includes an electric motor, a motor damper continuously interconnected with the electric motor, and an input member continuously interconnected with the motor damper. A transmission includes these elements, plus an output member, first, second, and third planetary gear sets each having first, second and third members, a first interconnecting member continuously interconnecting the third member of the first planetary gear set with the second member of the second planetary gear set, a second interconnecting member continuously interconnecting the second member of the first planetary gear set and the output member with the third member of the third planetary gear set, and a third interconnecting member continuously interconnecting the third member of the second planetary gear set with the second member of the third planetary gear set. The transmission also includes six torque transmitting mechanisms and a hydraulic pump. A sealing assembly is also provided.
    Type: Application
    Filed: December 14, 2011
    Publication date: July 12, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Norman Schoenek, Shawn H. Swales, Min-Joong Kim, Leonid Basin
  • Patent number: 8099179
    Abstract: A dual-redundant propulsion-by-wire control architecture with robust monitoring is presented to increase system availability without compromising safety. The dual-redundant controllers are able to cross-monitor and self-monitor. Self monitoring is effected at the application level and built-in system tests are performed. The monitor functions are set as high priority tasks. The first controller controls operation of a first propulsion system, monitors operation of a second controller, and, self-monitors. The second controller controls operation of a second propulsion system, monitors operation of the first controller, and, self-monitors. Each controller is operable to identify faults occurring in the first and the second controller, and implement an alternate operating control scheme for the respective propulsion system when a fault is identified. The first controller is signally connected to the second controller by substantially redundant communications buses.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: January 17, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Sanjeev M. Naik, Pradyumna K. Mishra, Soila M. Pertet
  • Publication number: 20110306463
    Abstract: An automated manual transmission system (1) including an input shaft (4), a clutch, an output shaft (6), and a gear-box enabling selection of different transmission ratios between the input shaft and the output shaft (6). An actuation mechanism (10) is operatively connected to the clutch and the gearbox to effect disengagement and re-engagement of the clutch and coordinated selection of the transmission ratios. A hybrid motor (14) is operably connected to the output shaft (6) and a control system (16) is operable to regulate the actuating mechanism in response to control inputs, to effect automatic gear changes. The hybrid motor (14) is responsive to the control system (16) to provide supplementary torque to the vehicle driveline when the clutch is disengaged, to reduce torque interruption in the driveline.
    Type: Application
    Filed: December 17, 2009
    Publication date: December 15, 2011
    Applicant: NT CONSULTING INTERNATIONAL PTY, LTD.
    Inventors: Richard Terrence Tamba, Simon Fitzgerald
  • Patent number: 7957856
    Abstract: An ECU calculates a drive torque request value Td0 (S102) when a creep torque generation condition is satisfied (YES in S100), calculates a creep torque reflection rate Kcrp using a gear rattle prevention map instead of an ordinary map (S110) when a vehicle speed V is substantially zero and an engine is in a load drive state (YES in S106 and NO in S108) while a forward drive range is being selected (YES in S104), and calculates a product of Td0 and Kcrp as a creep torque request value Tp (S114). The ordinary map is a map decreasing Kcrp to 0 with increase in brake torque, and the gear rattle prevention map is a map decreasing Kcrp to a predetermined value larger than 0 with increase in brake torque.
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: June 7, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Takao Itoh
  • Patent number: 7693637
    Abstract: A vehicle control system is comprised of a controller which is arranged to select an optimal mode adapted to a driving point of a vehicle from an optimal mode map of defining a plurality of running modes of the vehicle, to detect a generation of a mode transition in the optimal mode map, and to hold a current running mode selected before the transition for a holding time period when the generation of the mode transition is detected.
    Type: Grant
    Filed: July 1, 2005
    Date of Patent: April 6, 2010
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Michel Mensler, Shinichiro Joe
  • Patent number: 7611433
    Abstract: A dual-clutch transmission for use in a motor vehicle having an engine and a driveline includes an output shaft adapted for connection to the driveline and a planetary gearset in constant driving engagement with the output shaft. An input shaft is driven by the engine. A first constant mesh gearset is in selective driving communication with a first member of the planetary gearset. A second constant mesh gearset is in selective driving communication with a second member of the planetary gearset. A first clutch is operable for establishing a releasable drive connection between the input shaft and the first constant mesh gearset. A second clutch is operable for establishing a releasable drive connection between the input shaft and the second constant mesh gearset. A motor is selectively drivingly coupled to a third member of the planetary gearset.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: November 3, 2009
    Assignee: Magna Powertrain USA, Inc.
    Inventor: John R. Forsyth
  • Publication number: 20090250273
    Abstract: An automotive drive system includes a transmission comprising a plurality of gears, an electric motor having a rotor and being coupled to the transmission such that operation of the electric motor causes actuation of the gears, and a sensor assembly coupled to and located on the exterior of at least one of the transmission and the electric motor, the sensor assembly being configured to detect movement of at least one of the rotor and the plurality of gears and generate a signal representative thereof.
    Type: Application
    Filed: March 31, 2009
    Publication date: October 8, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: WILLIAM S. REED, DAN H. NGUY, CHRISTOPHER J. BOWES
  • Patent number: 7529607
    Abstract: A method for controlling selection of an automatic transmission gear ratio with staged ratios or constant variation for a vehicle including a control for preventing/allowing extension of the gear ratio or for controlling a shortening the transmission gear ratio if, at a current engine speed, the power is insufficient for maintaining the vehicle speed. The method prevents extension of the transmission gear ratio if the power available after the extension is insufficient for maintaining the vehicle speed; otherwise allowing extension of the transmission gear ratio.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: May 5, 2009
    Assignee: Renault S.A.S.
    Inventor: Olivier Aubert
  • Patent number: 7191859
    Abstract: A driving apparatus comprises an electric generator driven by an engine and a motor for driving driving-wheels by using electric power from the electric generator, wherein an engine-side input axle is linked to a crankshaft and an motor-side input axle is linked to a motor rotor and these input axles are linked to an output axle for transmitting power to the driving-wheels. In an engine-power transfer channel constituted by the engine-side input axle 18 and the output axle, there is provided a transmission for changing a revolution speed of the engine-power transfer channel to a plurality shift ranges. When a vehicle is engine-driven, the revolution speed of the engine-power transfer channel is changed, thereby allowing a drive force of the vehicle to be changed.
    Type: Grant
    Filed: January 13, 2004
    Date of Patent: March 20, 2007
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventor: Takenori Hashimoto