Clutch And Transmission Controlled Patents (Class 477/79)
  • Patent number: 10479360
    Abstract: A system, method, and apparatus includes management of coasting during operation of a vehicle equipped with a predictive cruise control system.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: November 19, 2019
    Assignee: Cummins Inc.
    Inventors: Joseph R. Dynes, Daniel Reed Dempsey, Kenneth M. Follen, Howard Robert Frost, Oruganti Prashanth Sharma, Ian Fredrick Lowry, Nathanael G. Long
  • Patent number: 10328929
    Abstract: A hybrid drive apparatus is provided to allow setting a variety of driving modes while achieving improvement in transmission efficiency. The hybrid drive apparatus includes an engine, first and second motor generators and a planetary gear mechanism. An output shaft of the first motor generator, an output shaft of an engine and an output shaft of the second motor generator, and an input shaft of the continuously variable transmission mechanism are coupled respectively to a sun gear, ring gear and carrier of the planetary gear mechanism. The hybrid drive apparatus includes first, second and third clutches which can switch engagement/disengagement respectively between the output shaft of the engine and the ring gear, between the carrier and the ring gear, and on the input shaft of the continuously variable transmission mechanism.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: June 25, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Toru Yagasaki
  • Patent number: 10167909
    Abstract: Disclosed are a method and an apparatus for controlling a damper clutch to prevent engine stall, and more particularly, to a method and an apparatus for controlling a damper clutch to prevent engine stall which can decide and correct when there is any error in control of a damper clutch in order to prevent engine stall. The method and the apparatus for controlling the damper clutch can decide and correct that a control unit of a damper clutch controller shows a wrong duty command value or a wrong current command value, thereby preventing engine stall, restraining decrease of acceleration power and blocking generation of noise or vibration.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: January 1, 2019
    Assignee: HYUNDAI AUTRON CO., LTD.
    Inventors: Jongik Choi, Kwanghyuk Lim
  • Patent number: 10100923
    Abstract: In a vehicle including an engine, drive wheels, a power transmission system, and an electronic control unit, during shifting of an automatic transmission, a hydraulic command value of a clutch is set to a higher value as an engine power command value is larger, so that a shift or change of the speed ratio proceeds in an electronic continuously variable transmission and the automatic transmission, in accordance with engine power as a product of the engine speed and engine torque, rather than torque of the engine, etc.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: October 16, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Nobufusa Kobayashi, Masato Yoshikawa, Takaaki Tanaka, Masato Shimoda
  • Patent number: 9694677
    Abstract: A vehicle has a transmission and a gearshift element pivotally arranged on a steering wheel of the vehicle. By actuating the gearshift element, the transmission is shiftable in an electrically controlled manner from one transmission gear to a next-higher or a next-lower transmission gear. At least one electric switch element and/or at least one optical display device is arranged on the gearshift element.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: July 4, 2017
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Martin Walter, Thomas Tille
  • Patent number: 9657834
    Abstract: Some embodiments of the present invention provide a control system for a motor vehicle having a first user-operable transmission selector means for selecting a forward operating mode of a transmission corresponding to travel in a forward direction and a reverse operating mode of a transmission corresponding to travel in a reverse direction opposite the forward direction, the control system comprising: a user-operable gear selector configured in a first functional mode to, upon receipt of a user input, select between a plurality of forward direction gear ratios, and wherein the user-operable gear selector is re-configured in a second functional mode to, upon receipt of a user input, select between the forward operating mode and the reverse operating mode.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: May 23, 2017
    Assignee: Jaguar Land Rover Limited
    Inventors: Rob Jerger, Jonathan Woodley, Navid Shamshiri, Andrew Raftry
  • Patent number: 9562588
    Abstract: A control apparatus for an automatic transmission includes a vehicle speed detector and a controller. The vehicle speed detector is configured to detect a vehicle speed. The controller is configured to set one of a plurality of gear change stages according to a running condition of a vehicle and configured to select one of a plurality of engagement combination states of a plurality of engagement mechanisms to achieve, according to the vehicle speed detected by the vehicle speed detector, at least one gear change stage out of the plurality of gear change stages in a case in which the controller sets the at least one gear change stage. The at least one gear change stage has the plurality of engagement combination states to achieve the at least one gear change stage.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: February 7, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Shintaro Kameda, Eri Kubota
  • Patent number: 9488197
    Abstract: A hydraulic circuit may include a proportional control solenoid valve controlling hydraulic pressure such that an operating hydraulic pressure required by the friction member is supplied to the friction member; a supply hydraulic path connecting the proportional control solenoid valve with the friction member, and adapted to supply hydraulic pressure controlled by the proportional control solenoid valve to the friction member; and a switch valve disposed in the supply hydraulic path so as to selectively open/close the supply hydraulic path.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: November 8, 2016
    Assignee: Hyundai Motor Company
    Inventor: Taehwan Wi
  • Patent number: 9187096
    Abstract: A system for controlling a transmission of a vehicle includes an engine control module that generates a command, while the vehicle is rolling in either a forward or reverse direction, to change a transmission of the vehicle from a reverse drive gear to a forward drive gear. The transmission includes a first clutch, a second clutch, a third clutch, and a fourth clutch. A transmission control module, in response to the command, maintains a first clutch in an engaged state, releases a second clutch and a fourth clutch, with the first clutch in the engaged state and the second clutch and the fourth clutch released, applies a third clutch with a synchronizer to engage the third clutch, and, after the third clutch is engaged, reapplies the fourth clutch to engage the fourth clutch.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: November 17, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Vijay A. Neelakantan, Kevin Michael Dougan
  • Patent number: 9020718
    Abstract: A torque converter (1) connecting an engine (14) and a transmission (15) of a vehicle is provided with a lockup clutch (2), and a controller (5) is programmed to increase an engagement force of a lockup clutch (2) under open loop control before shifting to feedback control of the engaging force using a target slip rotation speed. When an engine output torque rapidly decreases during open loop control (S59, S60), the controller (5) decreases the engaging force according to a variation amount of the engine output torque (S61, S65), thereby preventing an unintentional sudden engagement of the lockup clutch (2) due to decrease in the engine output torque.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: April 28, 2015
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yuji Katsumata, Satoshi Segawa
  • Publication number: 20150111696
    Abstract: In a control system, a transfer is connected to a rotation member between a driving power source and primary driving wheels and distributes dynamic power of the driving power source to secondary drive wheels. A driving power transmission shaft transmits the dynamic power of the driving power source distributed by the transfer to the secondary drive wheels. A connection-disconnection mechanism is disposed between the rotation member and the driving power transmission shaft. First and second clutches are disposed respectively between the driving power transmission shaft and right and left wheels of the secondary drive wheels. The electronic control unit is configured, when switching from a two-wheel-drive running state to a four-wheel-drive running state on the basis of a vehicle running state, to generate a transmission torque in the first clutch or the second clutch after controlling the connection-disconnection mechanism to engage the connection-disconnection mechanism.
    Type: Application
    Filed: October 16, 2014
    Publication date: April 23, 2015
    Inventors: Yoshinori Maeda, Kunihiro Iwatsuki, Hiroyuki Ishii
  • Patent number: 8997916
    Abstract: A clutch actuator and a speed change actuator are disposed so as to be adjacent to each other on one side of an engine main body along the axis of a crankshaft. The clutch actuator is provided with a manual clutch operating part capable of being manually operated. The speed change actuator is provided with a manual speed change operating part capable of being manually operated.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: April 7, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuhiro Norita, Toshimasa Mitsubori
  • Patent number: 8998772
    Abstract: An automated manual transmission for a vehicle may include a shifting section provided with a plurality of shifting units for implementing different gear ratio between an input shaft and an output shaft, and a variable power transfer unit transferring continuously and variably power of a power providing device to the shifting section in series by self-controllable slip operation, wherein the variable power transfer unit may be disposed between the power providing device and the shifting section.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: April 7, 2015
    Assignee: Hyundai Motor Company
    Inventors: Soon Ki Eo, Dong Soo Lee
  • Publication number: 20150080177
    Abstract: A compact transmission device that alleviates shift shock and avoids engine stall at the time of deceleration. A discharge resistance changing unit changes discharge resistance of a clutch oil pressure on a side where a clutch is disconnected due to swapping of clutches in two stages. During a shift period where the clutch on a connection side is changed over from a disconnection state to a connection state, an invalid filling zone where a friction force is not generated on a clutch plate is provided. A control unit controls the discharge resistance changing unit at a time of the shift change such that the clutch on a disconnection side is brought into a state where a friction force is not generated after finishing a half clutch zone when the clutch on a connection side is in a half clutch zone after the invalid filling zone is finished.
    Type: Application
    Filed: September 11, 2014
    Publication date: March 19, 2015
    Inventors: Naoki Sakamoto, Eiji Kittaka
  • Publication number: 20150038294
    Abstract: Methods and systems for controlling a transmission coupled to an engine during an engine start are presented. In one example, a method adjusts a transmission tie-up force in response to an indication of transmission slip. The method may improve vehicle launch for stop/start vehicles.
    Type: Application
    Filed: October 21, 2014
    Publication date: February 5, 2015
    Inventors: Jeffrey Allen Doering, Steve Michael Cicala, Alex O'Connor Gibson, Felix Nedorezov, Eric Frank Banners, Hong Jiang, Donald G. Levens
  • Patent number: 8948989
    Abstract: A dual clutch automated manual transmission includes a first clutch and a second clutch, and a clutch torque capacity command value for a plurality of clutch actuators arranged to drive the first clutch and second clutch based on operation of a by-wire type of clutch lever, wherein the clutch torque capacity of the plurality of clutches is controlled. An operator can adjust a driving force by manually operating the clutch in the transmission in which a clutch operation is controlled automatically, such as an automatic transmission system, automated manual transmission system, or dual clutch automated manual transmission system, thereby improving drivability.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: February 3, 2015
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Tetsushi Saitoh
  • Patent number: 8924112
    Abstract: A start control device and a start control method of a vehicular power transmission system including a lock-up clutch and a start clutch are provided in which start-time lock-up slip control is performed, and neutral control is performed. When the start-time lock-up slip control is additionally executed during cancellation of the neutral control, the gradient of an output rotational speed of the hydraulic power transmission which is changed, through engagement of the start clutch, toward an input rotational speed of the automatic transmission at the time of completion of engagement of the start clutch is controlled, using at least one of a start clutch pressure that is increased so as to engage the start clutch, and a lock-up clutch pressure that is increased so as to bring the lock-up clutch into slip engagement.
    Type: Grant
    Filed: December 28, 2010
    Date of Patent: December 30, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Atsushi Ayabe, Tomohiro Asami, Hidenori Saito
  • Patent number: 8915822
    Abstract: One-way clutches OWC1 and OWC2 are provided on output sides of transmissions TM1 and TM2, and the transmissions TM1 and TM2 mechanically lock when the output member 121 of the one-way clutches OWC1 and OWC2 is reversely rotated to the backward side. Clutch mechanisms CL1 and CL2 are interposed between the output member 121 and a driving target member 11 connected to a driving wheel 2. According to uphill start conditions, a controller 5 makes any one of the clutch mechanisms CL1 and CL2 enter ON state when a vehicle-backward-movement prevention control is determined to be required and the controller 5 makes the clutch mechanisms CL1 and CL2 enter OFF state when the vehicle-backward-movement prevention control is determined to be not required. Thus, it is possible to provide a vehicle driving system capable of performing a hill hold assist function with a simple control.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: December 23, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuki Ichikawa, Fumiyasu Suga
  • Patent number: 8888654
    Abstract: In a vehicle including two paths as torque transmission paths from an engine to an output shaft of a transmission, each of the paths provided with a clutch and a transmission mechanism, a gear shift shock due to a torque generated at the moment when the paired gears of the next gear level are engaged is significantly reduced. In normal travel control, a control device sets a transmitted torque capacity of each of the clutches in the two paths at maximum. Also, in the normal travel control, the control device sets the paired gears of the transmission mechanism in a previous path that is one of the paths, in an engaged state, and sets the transmission mechanism in a next path that is the other path, in a neutral state. When a gear shift command is generated, the control device lowers the transmitted torque capacity of the clutch in the next path.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: November 18, 2014
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Shinya Iizuka
  • Publication number: 20140329642
    Abstract: A method for calibrating a detector of a damping assembly in a vehicle is disclosed. The damping assembly comprises a damper for connecting a transmission shaft of a transmission system of the vehicle to a driving shaft, the method comprising the step of applying different torques at the damping assembly by generating losses at different working conditions of the transmission system, so that the damper can be compared to a damper of a reference vehicle for each of said different working conditions.
    Type: Application
    Filed: November 13, 2012
    Publication date: November 6, 2014
    Applicant: CNH INDUSTRIAL AMERICA LLC
    Inventors: Mancarella Francesco, Matteo Venturelli, Gabriele Morandi
  • Publication number: 20140302966
    Abstract: A method for optimised launch of a vehicle is provided wherein a driveline of the vehicle at least includes an engine, an automatic transmission, a system for exhaust gas recirculation, which are controlled by a driveline management system, wherein the management system is able to determine the mass of the vehicle, and whereby a launching, gear of the transmission is calculated dependent at least on the determined mass of the vehicle, whereby a launching gear is chosen dependent of the power loss caused by the EGR and wherein the power loss caused by the EGR is determined, the available power to launch the vehicle is determined, and the launching gear is recalculated dependent of the available power, and selecting said recalculated launching gear before launch of the vehicle, launch the vehicle with the recalculated launching gear.
    Type: Application
    Filed: May 30, 2011
    Publication date: October 9, 2014
    Applicant: VOLVO LASTVAGNAR AB
    Inventors: Anders Eriksson, Johan Bjernetun
  • Publication number: 20140296031
    Abstract: A clutch actuator and a speed change actuator are disposed so as to be adjacent to each other on one side of an engine main body along the axis of a crankshaft. The clutch actuator is provided with a manual clutch operating part capable of being manually operated. The speed change actuator is provided with a manual speed change operating part capable of being manually operated.
    Type: Application
    Filed: March 25, 2014
    Publication date: October 2, 2014
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Kazuhiro NORITA, Toshimasa MITSUBORI
  • Publication number: 20140287872
    Abstract: A control system and method for controlling a multiple gear ratio automatic transmission in a powertrain for an automatic transmission having pressure activated friction torque elements to effect gear ratio upshifts. The friction torque elements are synchronously engaged and released during a torque phase of an upshift event as torque from a torque source is increased while allowing the off-going friction elements to slip, followed by an inertia phase during which torque from a torque source is modulated. A perceptible transmission output torque reduction during an upshift is avoided. Measured torque values are used during a torque phase of the upshift to correct an estimated oncoming friction element target torque so that transient torque disturbances at an oncoming clutch are avoided and torque transients at the output shaft are reduced.
    Type: Application
    Filed: June 4, 2014
    Publication date: September 25, 2014
    Applicant: Ford Global Technologies, LLC
    Inventors: Christopher John Teslak, Gregory Michael Pietron, Hongtei Eric Tseng, Yuji Fujii, Michael Glenn Fodor, Diana Yanakiev, Seung-Hoon Lee
  • Publication number: 20140274556
    Abstract: A system and method for controlling a vehicle powertrain having a transmission to improve shift quality to detect the start of a torque phase of the shift based on a measured transmission input shaft torque. A torque sensor provides a signal to a controller that monitors initial rise time of the measured transmission input shaft torque. The torque sensor may be implemented by a strain gauge, a piezoelectric load cell, or a magneto-elastic torque sensor. The system may include a vehicle powertrain having an engine, a transmission coupled to the engine via a torque converter and a controller configured to initiate torque phase control when the slope of the transmission input shaft torque exceeds a predetermined threshold after initiation of the shift preparatory phase.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Yuji Fujii, Alexander O'Connor Gibson, Bradley Dean Riedle, Seung-Hoon Lee, Gregory Michael Pietron, Diana Yanakiev, Joseph F. Kucharski, Nimrod Kapas
  • Publication number: 20140274555
    Abstract: A system and method for minimizing torque disturbances during a shift event for an automatic transmission control actual transmission input shaft torque using a transmission input shaft signal produced by an input shaft torque sensor. The torque sensor provides a signal to a controller that monitors the measured transmission input torque. The torque sensor may be implemented by a strain gauge, a piezoelectric load cell, or a magneto-elastic torque sensor. The system may include a vehicle powertrain having an engine, a transmission coupled to the engine via a torque converter, an input torque sensor coupled to the input shaft of the transmission and a controller configured to control engine torque to cause the measured transmission input shaft torque to achieve a target transmission input shaft torque during the shift event.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: Ford Global Technologies, LLC
    Inventors: Alexander O'Connor Gibson, Seung-Hoon Lee, Yuji Fujii, Gregory Michael Pietron, Diana Yanakiev, Joseph F. Kucharski, Nimrod Kapas
  • Publication number: 20140274558
    Abstract: The present invention is provided with a manual input device capable of bidirectional inputting, the output end thereof is served to output to the input end of a bidirectional input unidirectional output transmission device, the output end of the bidirectional input unidirectional output transmission device performs output in a constant rotating direction, so a loading wheel set can be driven through an engaging or releasing operational clutch device (70), and when the loading wheel set performs reverse driving in the opposite rotating direction for the purpose of reverse linking, the load is released by the engaging or releasing operational clutch device (70), thereby preventing the transmission wheel system of the bidirectional input unidirectional output driven vehicle having clutch device at load end from being locked.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Inventor: Tai-Her Yang
  • Publication number: 20140274557
    Abstract: An apparatus and methods for testing and pumping through a well servicing system are provided. The apparatus includes a drive mechanism and an actuation system. The actuation system is coupled to the drive mechanism for selectively engaging the drive mechanism to a drive train of the well servicing system's pumping equipment for pressure testing and low rate pumping of the well servicing system without using the primary mover of the pumping equipment. A method for hydrostatic pressure testing of the well servicing system includes putting a transmission of the drive train into neutral and containing the well servicing system, then engaging the drive mechanism to the drive train and activating the drive mechanism to drive the drive train for pumping and compressing test fluid into the well servicing system without using the primary mover.
    Type: Application
    Filed: March 6, 2014
    Publication date: September 18, 2014
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Jonathan Wun Shiung Chong
  • Patent number: 8827868
    Abstract: A method of cooling a multi-speed dual-clutch transmission (DCT) that is paired with an internal combustion engine in a vehicle includes detecting operation of the vehicle. The method also includes sensing an increase in temperature of a subsystem of the DCT while the vehicle is operating. The method also includes selecting a remedial action in response to the sensed temperature. The method aditionally includes activating the selected remedial action such that the temperature of the subsystem is reduced.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: September 9, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Xuefeng Tim Tao, John William Boughner, Alfonso G. Hysko, Jonathan P. Kish, Matthew D. Whitton, Fei An, Steven P. Moorman
  • Publication number: 20140243150
    Abstract: Disclosed herein is a method for controlling gear shifting of an automatic transmission from an N gear stage to an N? gear stage. The gear shifting is embodied by means of engaging and releasing friction elements. The method includes selecting at least two among an rpm of a turbine, an rpm of a first motor generator (MG1), an rpm of a second motor generator (MG2) and an rpm of a planetary gear set as control factors, and controlling engagement and release of the friction elements using the control factors.
    Type: Application
    Filed: October 18, 2012
    Publication date: August 28, 2014
    Inventor: Yoon-Joon Choi
  • Patent number: 8795134
    Abstract: A control apparatus for a vehicular automatic transmission configured to selectively establish a plurality of shift positions by engaging respective combinations of two frictional coupling devices of a plurality of frictional coupling devices, with output hydraulic pressures of respective ones of a plurality of solenoid valves provided in a hydraulic control circuit, includes: a normal-state output regulation control portion and an electrically-normal-state determining portion.
    Type: Grant
    Filed: December 25, 2010
    Date of Patent: August 5, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hidenori Saito, Toshio Sugimura
  • Patent number: 8775036
    Abstract: When a capacity coefficient (Cre) of a torque converter is larger than or equal to a predetermined threshold (CreA), a speed ratio (e) is calculated on the basis of an actual power transmission efficiency (?) by referring to a predetermined unique relationship between a power transmission efficiency (?) and a speed ratio (e). Therefore, even in a second speed ratio variation range (R2) in which the capacity coefficient (Cre) is larger than or equal to the threshold (CreA) and the speed ratio (e) is not uniquely determined for the capacity coefficient (Cre), the speed ratio (e) is calculated using the unique relationship between the speed ratio (e) and the power transmission efficiency (?), so the speed ratio (e) may be calculated in all the speed ratio variation range of the torque converter.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: July 8, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Daisuke Inoue
  • Patent number: 8758197
    Abstract: A vehicle idle stop system is disclosed. The idle stop system comprises an engine, an automatic transmission, a first oil pump driven by said engine and generating hydraulic pressure which is supplied to a friction element of said automatic transmission, a second oil pump capable of operating and generating hydraulic pressure which is supplied to a friction element of said automatic transmission during an engine stop, and a controller. The controller is configured to control the engine to stop when a predetermined engine stop condition is satisfied, and to control the second oil pump to supply hydraulic pressure to a predetermined friction element coupled to a forward starting gear of the automatic transmission, the hydraulic pressure supplied to couple the predetermined friction element when the engine is automatically stopped and when a gear range of the automatic transmission is in a neutral range.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: June 24, 2014
    Assignee: Mazda Motor Corporation
    Inventors: Shinya Kamada, Motomi Kobayashi, Koshiro Saji
  • Publication number: 20140171263
    Abstract: A method of controlling a shift of an automated group gearbox having a multi-step main transmission and a trailing two-step range group. An input shaft of the main transmission is driven by a drive device. The main transmission and a range group have synchronization devices with shift clutches. Each synchronization device, for the main transmission, has two shift positions for respective gear ratio steps and a neutral position and the range group synchronization device has only two shift positions to shift between two gear ratios steps. To accelerate range shifts, when synchronizing the range group, the main transmission input shaft is synchronized by controlling external synchronization aids to a target rotational speed at which either after the synchronization and shifting of the gear ratio step of the range group or independently from the current synchronization condition of the range group, the target gear ratio is engaged in the main transmission.
    Type: Application
    Filed: July 5, 2012
    Publication date: June 19, 2014
    Applicant: ZF FRIEDRICHSHAFEN AG
    Inventors: Mario Steinborn, Roland Mair, Florian Schneider, Jochen Breuer
  • Publication number: 20140135170
    Abstract: A drive axle assembly includes a drive axle configured to rotate with a driving torque, a first clutch pack assembly located at an end of the drive axle, and a second clutch pack assembly located at an opposite end of the drive axle. A first drive wheel assembly is operatively connected to the first clutch pack assembly, wherein the first clutch pack assembly is configured to convert the driving torque of the drive axle to a first driving torque of the first drive wheel. A second drive wheel assembly is operatively connected to the second clutch pack assembly, wherein the second clutch pack assembly is configured to convert the driving torque of the drive axle to a second driving torque of the second drive wheel.
    Type: Application
    Filed: January 21, 2014
    Publication date: May 15, 2014
    Applicant: NACCO Materials Handling Group, Inc.
    Inventors: Robert Lee CHESS, Chenyao CHEN, John ROWLEY
  • Patent number: 8725372
    Abstract: A method for adjusting the point of engagement of a friction clutch of a step-variable transmission for a motor vehicle, in particular a friction clutch of a dual clutch transmission. The friction clutch is controllably actuated by means of a clutch actuator and at least one synchronizer shifting clutch is controllably actuated by means of a shift actuator for the engagement and disengagement of a gear ratio of the spur-gear transmission. A set-point of the clutch actuator for the point of engagement of the friction clutch is adjusted as a function of a speed gradient value, which ensues from a transitional state with the friction clutch actuated and the shifting clutch actuated, once the shifting clutch is opened. The transitional state is established by setting the clutch actuator and the shift actuator to a respective transitional value substantially at the same time or, at least in sections, in parallel.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: May 13, 2014
    Assignees: GETRAG Getriebe-und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG, Bayerische Motoren Werke Aktiengesellschaft, Conti Temic microelectronic GmbH
    Inventors: Rainer Rinck, Markus Schuerlein, Tobias Soller
  • Publication number: 20140106927
    Abstract: A method and a system for improving operation of a hybrid vehicle are presented. In one example, a clutch is operated while a vehicle is stopped and while a vehicle brake is applied to determine a clutch torque transfer function. The approach may improve vehicle launch after an engine stop.
    Type: Application
    Filed: October 12, 2012
    Publication date: April 17, 2014
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Alex O'Connor Gibson, Jeffrey Allen Doering, David Oshinsky, Dennis Craig Reed, Adam Nathan Banker
  • Patent number: 8694219
    Abstract: The invention relates to a process of ending a clutch protection function against overload of an automated clutch. The clutch protection function is ended when, by actuating the gas- and brake pedals, an absolute value of a brake pedal signal falls below a default threshold value and the time derivative of the brake pedal signal is negative.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: April 8, 2014
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: Michael Bechmann
  • Publication number: 20140088842
    Abstract: A system and method are provided for controlling an automatic engine stop-start in conjunction with a transmission having one or more latching valves. The system and method is configured to determine whether conditions are met for an autostop, and if so, to latch or unlatch the latching valve(s) by changing clutch pressure.
    Type: Application
    Filed: August 9, 2013
    Publication date: March 27, 2014
    Applicant: GM Global Technology Operations LLC
    Inventors: Paul G. Otanez, Craig S. Ross
  • Publication number: 20140080666
    Abstract: A clutch arrangement for a drivetrain of a motor vehicle. The clutch arrangement has a first clutch, a second clutch, and a hydraulic actuator arrangement. The actuator arrangement has a first hydraulic cylinder for actuating the first clutch and a second hydraulic cylinder for actuating the second clutch. The actuator arrangement has an actuator pump which is driven by means of an electric motor and which can be operated in two directions of rotation. The actuator pump has a first port, which is connected to the first hydraulic cylinder, and a second port, which is connected to the second hydraulic cylinder. The actuator arrangement actuates the first or the second clutch depending on the direction of rotation of the actuator pump.
    Type: Application
    Filed: November 20, 2013
    Publication date: March 20, 2014
    Applicant: GETRAG Getriebe-und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG
    Inventors: Günter Rühle, Mark Schweiher
  • Patent number: 8672806
    Abstract: A method for determining a startup gear in a motor vehicle for starting from standstill while maintaining a load limit of the clutch in a the drive train which comprises a drive engine built as an internal combustion engine, a friction clutch, and an automatic stepped transmission. To avoid overloading the clutch, the method determines a load-independent startup gear with which startup would occur under the present starting conditions without considering the current load state of the clutch and without complying with a load limit of the clutch. A load-specific startup gear is determined as the highest startup gear, with which during a startup under the present starting conditions, a predefined load limit of the clutch would be maintained with consideration given to the present load state of the clutch. The startup gear is the lowest of the load-independent startup gear and the at least one load-specific startup gear.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: March 18, 2014
    Assignee: ZF Friedrichshafen AG
    Inventor: Roland Mair
  • Patent number: 8666614
    Abstract: A twin-clutch type hybrid transmission is configured to include an input shaft 10, an odd-numbered stage shift mechanism 30, an even-numbered stage shift mechanism 60, a motor power mechanism 20, and an output mechanism 90. The shift mechanisms 30 and 60 include transmission gear trains 32 and 62, and main clutches 34 and 64, respectively, the main clutches 34 and 64 for selectively transmitting the power of the transmission gear train 32 and the power of the transmission gear train 62 to transmission shafts 40 and 70, respectively. The shift mechanisms 30 and 60 also include shift gear trains 41, 43, 45, 47, 72, 74, 76, and 78 provided to the transmission shafts 40 and 70 to transmit rotation to the output mechanism 90, respectively, and mechanical clutches 50, 52, 80, and 82 for selectively engaging the corresponding shift gear trains and the transmission shafts 40 and 70, respectively. As a result, a compact twin-clutch type hybrid transmission having high transmission efficiency can be obtained.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: March 4, 2014
    Assignee: Hitachi Nico Transmission Co., Ltd.
    Inventors: Hideki Nakamura, Masahiko Ibamoto, Tatsuro Abe
  • Patent number: 8655560
    Abstract: A control apparatus and a control method for a vehicular drive apparatus that includes a driving power source, and a power transmission device that transmits power from the driving power source to a drive wheel are provided. It is determined that a malfunction occurs in the power transmission device, when a comparison value remains equal to or above a predetermined value for a predetermined period. The comparison value is obtained by making a comparison between an actual value and a theoretical value that relate to a rotational speed of a predetermined rotational member that constitutes at least a part of the vehicular drive apparatus. The predetermined period is set according to an operating state of the power transmission device. Thus, it is possible to reduce the possibility that it is erroneously determined that a malfunction occurs, and to quickly determine that a malfunction occurs.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: February 18, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tooru Matsubara, Atsushi Tabata, Masakazu Kaifuku, Hidenori Katoh
  • Patent number: 8652003
    Abstract: A transmission configured with a speed change control unit which, when upshifting the speed in an accelerator on condition, executes an engagement control including a torque phase control after executing a filling control, which controls the hydraulic control unit in such a way that a hydraulic servo of the engagement side frictional engagement element is filled with hydraulic oil, and a standby control, which controls the hydraulic control unit in such a way that hydraulic pressure for the hydraulic servo is maintained at a preset standby pressure. A correction unit is configured to correct at least one of an execution time of the filling control and the standby pressure to an increment side when a fluctuation in a rotational acceleration of the input shaft exceeding a preset determination reference is detected after the standby control.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: February 18, 2014
    Assignee: Aisin AW Co., Ltd.
    Inventors: Shigekazu Hase, Nobuhiro Iwai, Hiroshi Tsutsui
  • Patent number: 8652004
    Abstract: A method of operating a vehicle drive train having a drive machine, a transmission apparatus having a plurality of shift elements and an output drive. The plurality of shift elements are engaged or disengaged in a power flow for achieving different transmission ratios within the transmission apparatus. The output drive is coupled to a transmission output shaft and the drive machine is coupled to a transmission input shaft of the transmission apparatus. Upon a request to interrupt power flow within the transmission apparatus, between the transmission input shaft and the transmission output shaft, a maximum number of shift elements are transferred to and/or held in an engaged operating state, and the remaining portion of the shift elements are transferred to and/or held in a disengaged operating state with the transmission output shaft being rotatable.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: February 18, 2014
    Assignee: ZF Friedrichshafen AG
    Inventors: Valentine Herbeth, Jorg Arnold, Georg Mihatsch, Thilo Schmidt, Klaus Steinhauser
  • Patent number: 8630778
    Abstract: A system and method for determining a required throttle position and operating a throttle in the required throttle position to attain a required engine speed for fuel cut acquisition is disclosed. A lock-up clutch may be engaged without a shock if a required engine speed is achieved that corresponds to a current transmission speed. Fuel economy may be increased by cutting fuel to the engine when a lock-up clutch is engaged.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: January 14, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventor: Chris Hopp
  • Publication number: 20140011634
    Abstract: An automated manual transmission for a vehicle may include a shifting section provided with a plurality of shifting units for implementing different gear ratio between an input shaft and an output shaft, and a variable power transfer unit transferring continuously and variably power of a power providing device to the shifting section in series by self-controllable slip operation, wherein the variable power transfer unit may be disposed between the power providing device and the shifting section.
    Type: Application
    Filed: January 9, 2013
    Publication date: January 9, 2014
    Applicant: Hyundai Motor Company
    Inventors: Soon Ki EO, Dong Soo Lee
  • Publication number: 20140011635
    Abstract: A method for improving starting of an engine that may be repeatedly stopped and started is presented. In one embodiment, the method adjusts a transmission actuator in response to engine combustion during an engine start. The method may improve vehicle launch for stop/start vehicles.
    Type: Application
    Filed: September 10, 2013
    Publication date: January 9, 2014
    Applicant: Ford Global Technologies, LLC
    Inventors: Felix Nedorezov, Hong Jiang, Alex O`Connor Gibson, Roger Lyle Huffmaster, Ihab S. Soliman
  • Publication number: 20140004999
    Abstract: In a vehicle including two paths as torque transmission paths from an engine to an output shaft of a transmission, each of the paths provided with a clutch and a transmission mechanism, a gear shift shock due to a torque generated at the moment when the paired gears of the next gear level are engaged is significantly reduced. In normal travel control, a control device sets a transmitted torque capacity of each of the clutches in the two paths at maximum. Also, in the normal travel control, the control device sets the paired gears of the transmission mechanism in a previous path that is one of the paths, in an engaged state, and sets the transmission mechanism in a next path that is the other path, in a neutral state. When a gear shift command is generated, the control device lowers the transmitted torque capacity of the clutch in the next path.
    Type: Application
    Filed: January 26, 2012
    Publication date: January 2, 2014
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Shinya Iizuka
  • Patent number: 8600635
    Abstract: When a select lever is in a drive range, a microcomputer reads a value of an output voltage by a switch-operation-signal output circuit after detecting that both shift-up switch and shift-down switch are substantially simultaneously turned on, checks whether or not the output voltage by the switch-operation-signal output circuit is the output voltage indicating that the switch after a predetermined time has elapsed is in a normal condition, and only when the output voltage is such an output voltage, permits a manual mode of an automatic transmission and when the output voltage is not such an output voltage, cancels the manual mode.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: December 3, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kazuyoshi Wakita, Yoshiyuki Nagayama
  • Publication number: 20130310218
    Abstract: It is an object of the present invention to provide a compact torque transmission device. The torque transmission device includes an input-side member, an output-side member, a clutch and a pressing mechanism. The clutch is configured to transmit or cut torque between the input-side member and the output-side member. The pressing mechanism includes a pressing member for pressing the clutch, and a pressing device. The pressing device is a device for pressing the pressing member, and is disposed on the inner peripheral side of the clutch.
    Type: Application
    Filed: January 25, 2012
    Publication date: November 21, 2013
    Applicant: EXEDY Corporation
    Inventors: Yasuhiko Fujita, Kousuke Murata