Adaptive Control Patents (Class 701/58)
  • Patent number: 10655731
    Abstract: As a mode switching shift line when a sub-transmission mechanism is switched from a first-speed to a second-speed, a first mode switching shift line, which prioritizes a learning of a hydraulic pressure with which a Low brake starts to slip and a learning of a hydraulic pressure with which a High clutch starts to transmit a torque, or a second mode switching shift line, which is a shift line in a Low side with respect to the first mode switching shift line and prioritizes a fuel efficiency of an engine is selected, and the sub-transmission mechanism is switched from the first-speed to the second-speed on the basis of the selected mode switching shift line.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: May 19, 2020
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Takashi Koguchi, Sho Okutani, Kenji Hishida, Makoto Komatsu, Takuichiro Inoue, Jongkeun Lim, Hiroyasu Tanaka
  • Patent number: 10569662
    Abstract: A control apparatus for a vehicle having an electric motor, and a step-variable transmission selectively placed in a speed position with engagement of a coupling device, wherein the vehicle runs rearward with a reverse drive torque of the electric motor generated in a forward-drive low-speed position of the transmission, is provided. The control apparatus includes: a first shift control portion temporarily increasing an input torque of the transmission to raise its input speed toward a synchronizing speed in the low-speed position, and commands an engaging-side coupling device to be brought into its engaged state after the input speed has been raised to a predetermined value; and a second shift control portion increasing an engaging force of the engaging-side coupling device to bring the engaging-side coupling device into the engaged state.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: February 25, 2020
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Kenta Kumazaki, Takeshi Kitahata, Masato Yoshikawa, Hisashi Ishihara, Hiromichi Kimura, Kazuyuki Shiiba, Tooru Matsubara, Mitsuru Maeda
  • Patent number: 10501083
    Abstract: A vehicle control device includes control means for executing coasting control, in which a friction engaging element is disengaged and a rotation speed of a rotary shaft of a drive source is set at zero, when a shift range corresponds to a travel range and a coasting condition is established, and the control means executes the coasting control when the shift range is modified to a neutral range.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: December 10, 2019
    Assignee: JATCO LTD
    Inventors: Yusuke Nakano, Yusuke Ota, Yoshimasa Nishihiro, Masayoshi Nakasaki, Yukifumi Ootsuka, Takuro Kawasumi, Shintaro Oshio
  • Patent number: 10502153
    Abstract: A method for controlling an engine of a vehicle going downhill with a throttle operator in an idle position, and a driven pulley of a CVT initially having a driven pulley speed below a predetermined driven pulley speed, includes: determining a first speed, the first speed being proportional to the driven pulley speed; as the driven pulley speed increases and the driven pulley speed is below the predetermined driven pulley speed, increasing an actual engine speed as the driven pulley speed increases; the actual engine speed being an engagement speed when the driven pulley speed is the predetermined driven pulley speed; and as the driven pulley speed continues to increase and the driven pulley speed is above the predetermined driven pulley speed: controlling the engine to operate under conditions corresponding to an engine braking speed thereby causing engine braking, the engine braking speed being less than the actual engine speed.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: December 10, 2019
    Assignee: BOMBARDIER RECREATIONAL PRODUCTS INC.
    Inventor: Jean-Philippe Houle
  • Patent number: 10378644
    Abstract: Disclosed is a control apparatus for a vehicular transmission comprising: a vehicle speed sensor; an accelerator opening angle sensor; and a gear-shift control section (8D) of a CVTECU 8. The vehicle speed sensor includes: an output shaft rotation speed sensor (90) configured to detect a rotation speed (rotation numbers) of an output shaft (41) of the automatic transmission; road wheel rotation speed sensors configured to detect rotation speeds (rotation numbers) of four road wheels (90B through 90E); and a vehicle speed calculating section (8B) of CVTECU 8 configured to calculate the vehicle speed from the information of the road wheel rotation speeds when a preset predetermined condition as a condition under which vertical variations of the rotation speed of the output shaft are generated is established and calculate the vehicle speed from the output shaft rotation speed information if the predetermined condition is not established.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: August 13, 2019
    Assignee: JATCO LTD
    Inventors: Hiroki Iwasa, Tetsuya Izumi
  • Patent number: 10358125
    Abstract: A vehicle includes an engine and an electric machine coupled to a gearbox. A controller is programmed to predict, at an onset of a shift, a supplemental torque profile to fill a torque hole expected during the shift and an available electric machine torque during the shift. The controller is further programmed to, in response to the supplemental torque profile exceeding the available electric machine torque during the shift, operate the engine from the onset to achieve a torque reserve in anticipation of increasing the engine torque.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: July 23, 2019
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Mark Steven Yamazaki, Christopher John Teslak, Bernard D. Nefcy, Rajit Johri, Justin Panhans
  • Patent number: 10302178
    Abstract: An outer race assembly for a continuously variable transmission includes a hydraulic cavity housing, a first radially outer race structure spaced along an axis from a second radially outer race structure to form a radially outer race, and planetary members in rolling contact with the radially outer race. The first radially outer race structure includes nesting engagement with the hydraulic cavity housing, and a hydraulic cavity sealed between the hydraulic cavity housing and the first radially outer race structure to control axial movement of the first radially outer race structure.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: May 28, 2019
    Assignee: Orbital Traction, Ltd.
    Inventors: Joseph D. Kliewer, Mark M. Koeroghlian
  • Patent number: 10161516
    Abstract: A shift control apparatus for a vehicle which has an engine with an exhaust supercharger, and a transmission, if there is a deceleration intention of a driver, compares a target torque and an actual torque, and while the actual torque is higher than the target torque and a difference therebetween is greater than or equal to a predetermined threshold value, controls a speed at which to cause a gear ratio of the transmission to change to the target gear ratio to be slower than at a time of normal shift control.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: December 25, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Atsushi Sato, Hirofumi Akagi
  • Patent number: 10077049
    Abstract: A method is provided for adapting the starting gear of an automated manual transmission in a heavy vehicle, where a pre-selected starting gear is selected by a transmission control unit depending on vehicle parameters of the heavy vehicle, where the starting gear is lowered from the pre-selected starting gear depending on a movement behavior of a vehicle in front of the heavy vehicle. The pre-selected starting gear can be adapted to the traffic in front of the vehicle, which makes it possible to avoid unnecessary gear changes and which allows for a smooth starting cycle of the vehicle.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: September 18, 2018
    Assignee: Volvo Truck Corporation
    Inventors: Johan Bjernetun, Anders Eriksson
  • Patent number: 9975428
    Abstract: A cluster control system of a vehicle may include a cluster controller for controlling a cluster, an engine controller for controlling an engine and supplying an engine revolutions per minute (RPM) to the cluster controller, and a transmission controller for controlling a transmission and supplying a virtual engine RPM according to a shifting type to the cluster controller when a shifting event occurs.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: May 22, 2018
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Joung Chul Kim, Sunghyun Cho
  • Patent number: 9891634
    Abstract: A solenoid valve control system comprising a solenoid valve drive circuit applying a drive current to the solenoid valve; a pressure data calculation unit calculating a pressure data including a band and a cycle of pressure fluctuation from a pressure value; a pressure hysteresis calculation unit calculating a difference between the pressure value when the drive current value is increased and the pressure value when the drive current value is decrease as a hysteresis amount; a vibration determination unit determining whether or not the pressure data is included in an area outside the pressure data range, which is outside a first predetermined range; a hysteresis determination unit determining whether or not the pressure hysteresis amount is included in an area outside the pressure hysteresis amount range, which is outside a second predetermined range; and a drive frequency adjustment unit adjusting a drive frequency based on the determination result.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: February 13, 2018
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Yoshihisa Sugimoto, Jyunichi Sakashita, Naoki Kobayashi
  • Patent number: 9771883
    Abstract: An engine assembly includes a control module configured to receive a torque request and an engine configured to produce an output torque in response to the torque request. The control module includes a processor and tangible, non-transitory memory on which is recorded instructions for executing a method for supervisory model predictive control. The control module includes a multi-layered structure with an upper-level (“UL”) optimizer module configured to optimize at least one system-level objective and a lower-level (“LL”) tracking control module configured to maintain at least one tracking parameter. The multi-layered structure is characterized by a decoupled cost function such that the UL optimizer module minimizes an upper-level cost function (CFUL) and the LL tracking control module minimizes a lower-level cost function (CFLL). The system-level objective may include minimizing fuel consumption of the engine and the tracking parameter may include delivering the torque requested to engine.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: September 26, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Ibrahim Haskara, Yiran Hu, Chen-Fang Chang
  • Patent number: 9752971
    Abstract: A viscosity measuring apparatus is mounted on a vehicle provided with an engine, a cylinder pressure sensor configured to detect cylinder pressure which is inner pressure of a cylinder of the engine, a fuel injection valve configured to supply fuel to the engine, and a temperature sensor configured to detect temperature of a coolant of the engine. The viscosity measuring apparatus is provided with: an estimating device configured to calculate a cooling loss from a heating value of the cylinder based on the cylinder pressure detected by the cylinder pressure sensor and an input heating value of the cylinder, and to estimate viscosity of the coolant on the basis of the calculated cooling loss.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: September 5, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sho Tomita, Rentaro Kuroki
  • Patent number: 9746073
    Abstract: A system for a vehicle includes a desired pressure module, a valve actuation module, a filter module, and a capacity detection module. The desired pressure module selectively generates an increase in a desired pressure of hydraulic fluid for a clutch of an automatic transmission. The valve actuation module actuates a solenoid valve based on the desired pressure. The solenoid valve supplies hydraulic fluid to a regulator valve, and the regulator valve supplies hydraulic fluid to the clutch. The filter module filters an acceleration of a shaft of the automatic transmission to generate a filtered acceleration. The capacity detection module indicates whether the clutch reached torque carrying capacity based on the filtered acceleration.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: August 29, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Matthew D. Whitton, Timothy R. Stockdale, Amanda P. Igel, Nathaniel E. Wilke
  • Patent number: 9656664
    Abstract: A hybrid vehicle control device for a drive system is provided with an engine, a motor and an automatic transmission. The hybrid vehicle control device is configured such that when there is a mode switch request during an EV mode where only the motor is used as a drive source, a shift is made to an HEV mode where the engine and the motor are used as drive sources. The hybrid vehicle control device is further configured such that if a mode switch request and a downshift request for the automatic transmission (are generated, mode switch control is immediately started first. The configuration is also such that downshift control is started once the rotational speed of the engine has reached a combustion possible rotational speed, and the transmission speed at this time is made to be faster than an ordinary transmission speed.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: May 23, 2017
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takao Ando, Ryosuke Ito
  • Patent number: 9656656
    Abstract: In one aspect, a method for reducing fuel consumption of a work vehicle is disclosed. The method may generally include determining, with a controller, a load power requirement for the work vehicle, determining a plurality of candidate engine speeds at which the load power requirement is achievable, analyzing stored efficiency data for a transmission and at least one additional component of the work vehicle to determine a power loss value for each candidate engine speed, determining a candidate engine power for each candidate engine speed based on the load power requirement and the power loss values and analyzing stored fuel efficiency data based on the candidate engine powers to determine a target engine speed for the work vehicle.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: May 23, 2017
    Assignee: CNH Industrial America LLC
    Inventors: Yun Xing, Yanming Hou, Haibo Guo
  • Patent number: 9605755
    Abstract: A method and system for controlling movement of an actuator fork of a transmission through a pre-synchronization phase of a synchronization event at a pre-synchronization fork velocity includes adjusting the level of fluid pressure applied to an actuator operatively attached to the actuator fork to control the pre-synchronization fork velocity within a predetermined range of a velocity target. The method determines, via a controller, the fork velocity during the pre-synchronization phase of a current synchronization event, compares the determined fork velocity to a velocity target, and adjusts the pressure level of fluid applied to an actuator piston of the actuator to control the velocity of the actuator fork within a predetermined range defined by the velocity target during a subsequent pre-synchronization phase. The velocity target may be defined for a shift type, such as a fast or slow shift, where the shift type is determined by the controller.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: March 28, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Glenn W. Hoefflin, Minh Q. Truong, Christopher Jay Weingartz
  • Patent number: 9586478
    Abstract: An engine rotational speed display device includes: an engagement state determination module that determines an engagement state of a lock-up clutch; a target rotational speed setting module that sets a target turbine rotational speed according to a selected gear stage; a rotational speed for display selection unit that selects an engine rotational speed as a rotational speed for display when the lock-up clutch is not engaged and selects the target turbine rotational speed as the rotational speed for display when the lock-up clutch is engaged; a time measuring module that measures an elapsed time since a gear shift operation is received; and a rotational speed for display limiting module that limits a variation in the rotational speed for display per unit of time according to the elapsed time when the target turbine rotational speed is selected as the rotational speed for display.
    Type: Grant
    Filed: December 16, 2014
    Date of Patent: March 7, 2017
    Assignee: FUJI JUKOGYO KABUSHIKI KAISHA
    Inventors: Shinya Yasunaga, Keisuke Ajimoto
  • Patent number: 9575992
    Abstract: The invention relates to a method, a map providing device, a computer program and a computer program product for presenting a digital map via a map presenting unit of a user terminal. An object (01) and a first position (P1) of this object are obtained together with a digital map (M1) comprising a reference position (RP) and the first position (P1). A line (L1) is determined, which at one end is to be connected to the reference position and at another opposite end to the first position. Then a geographical area (A1) of the digital map including the reference position is presented. If the first position (P1) is outside of the geographical area then a part (L1A) of the line stretching through the geographical area is presented. If not no line is presented. The appearance of the line when presented is dependent on the distance between the reference position and the first position.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: February 21, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Johan Bolin
  • Patent number: 9333973
    Abstract: A speed change control system for reducing shift shocks of clutch-to-clutch shifting is provided. The control system is applied to a vehicle in which a transmission having engagement devices is connected to an output side of a prime mover, and in which a gear stage of the transmission is shifted among a plurality of stages by changing engagement states of the engagement devices. The speed change control system carries out a clutch-to-clutch shifting from a predetermined gear stage to another gear stage by reducing a torque capacity of the predetermined engagement device to be disengaged while increasing a torque capacity of another engagement device to be engaged.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: May 10, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Seiji Masunaga, Yoshio Hasegawa, Seiji Kuwahara, Nobufusa Kobayashi
  • Patent number: 9315193
    Abstract: A speed change control system for reducing shift shocks of clutch-to-clutch shifting is provided. The control system is applied to a vehicle in which a transmission having a plurality of engagement devices is connected to an output side of a prime mover, and in which a gear stage of the transmission is shifted among a plurality of stages by changing engagement states of the engagement devices. The speed change control system is configured to carry out a clutch-to-clutch shifting of the gear stage from a predetermined gear stage to another gear stage by gradually reducing a torque capacity of the predetermined engagement device to be disengaged while gradually increasing a torque capacity of another engagement device to be engaged.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: April 19, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Seiji Masunaga, Yoshio Hasegawa, Seiji Kuwahara, Nobufusa Kobayashi
  • Patent number: 9187082
    Abstract: At a hybrid vehicle including a driving power generation device with an engine, a first MG (motor generator) and a second MG, and a transmission device including a power split mechanism coupling an output shaft to the engine and the first MG, and a transmission coupling an output shaft to the second MG, an ECU stops the driving power generation device when the transmission device is in error. Then, the ECU determines whether the vehicle is actually stopped or not based on a detection value from a wheel speed sensor, and maintains the supply of electric power from the battery until a determination is made that the vehicle has actually stopped.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: November 17, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takeshi Nozaki
  • Patent number: 9145659
    Abstract: A ride control system uses speed, pressure, hand throttle, foot throttle and seat position information associated with a tractor-loader-backhoe to determine when to engage and disengage the ride control system for the tractor-loader-backhoe. Once the ride control system is engaged, the ride control system can be disengaged in response to either an operator command or a measured speed of the tractor-loader-backhoe being below a predetermined speed.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: September 29, 2015
    Assignee: CNH Industrial America LLC
    Inventors: Robert Walz, C. David Anderson, Matthew J. Hennemann, David J. Sanning, Nicholas S. Chibucos
  • Patent number: 9140337
    Abstract: A method for operating a powertrain through selective application of a hydraulically actuated clutch includes monitoring a state of a pressure control switch operatively coupled the clutch, monitoring a hydraulic line pressure utilized by the pressure control switch to fill the clutch, determining a hydraulic flow rate flowing to the clutch based upon the state of the pressure control switch and the hydraulic line pressure, tracking a clutch fill volume of the clutch based upon the hydraulic flow rate, and controlling operation of the clutch based upon the clutch fill volume.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: September 22, 2015
    Assignees: GM Global Technology Operations LLC, Daimler AG, Chrysler Group LLC, Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Jy-Jen F. Sah, Bryan R. Snyder, Ali K Naqvi
  • Patent number: 9096217
    Abstract: A control apparatus for a transmission that form a plurality of shift speeds by engaging those of a plurality of engagement elements which need be engaged for each shift speed. The control apparatus having a target shift speed changing unit that changes a target shift speed based on a vehicle speed and a neutral control unit that, when predetermined conditions that are predetermined to bring the transmission into a neutral state are satisfied during traveling, engages at least one of the engagement elements that need be engaged to attain the target shift speed, and disengages the remainder of the engagement elements, thereby bringing the transmission into the neutral state.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: August 4, 2015
    Assignee: AISIN AW CO., LTD.
    Inventors: Takehiko Suzuki, Tomonori Tsugo, Yukio Sugiura
  • Patent number: 9091343
    Abstract: A system for driving a machine is provided. A user input device inputs a desired throttle setting for the machine. The system includes an infinitely variable transmission having a transmission ratio that is adjustable. At least one sensor determines an inclination of the machine relative to a reference plane. A controller is configured to determine and apply a variable rate limit upon change in the transmission ratio based on the inclination of the machine when the desired throttle setting is reduced more than a predetermined amount and to adjust the rate limit based on the difference between an actual engine speed and a desired engine speed.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: July 28, 2015
    Assignee: Caterpillar Inc.
    Inventors: Joshua Callaway, Steven J. Juricak, Corwin E. Storer
  • Patent number: 9085341
    Abstract: An electric power assist device and a driving method for an electric vehicle are provided. The electric power assist device adapted for the electric vehicle includes an angle sensing unit, a driving module, and a control module. The angle sensing unit senses a tilting angle of the electric vehicle on the road. The driving module includes a power driving unit and a motor. The driving module receives a control signal for driving the electric vehicle by the motor. The control module is coupled to the angle sensing unit and the driving module. The control module adjusts the control signal according to a change of the tilting angle to increase a torque force of the motor when the electric vehicle is on an uphill road.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: July 21, 2015
    Assignees: Kinpo Electronics, Inc., Cal-Comp Electronics & Communications Company Limited
    Inventors: Chia-Chin Tsai, Wen-Hsin Lo
  • Patent number: 9057438
    Abstract: A compression control device for a continuously variable transmission is provided in which when estimating the torque ratio, which is the ratio of the actually transmitted torque relative to the maximum transmittable torque of the continuously variable transmission, based on the transmission characteristics for transmitting the given variable component of the input shaft to the output shaft via an endless belt, a slip identifier, which is an indicator for the ratio of the amplitude of the variable component between the input shaft and the output shaft, or a phase lag, which is an indicator for difference in phase of the variable component, is used. It is possible to improve the control responsiveness and reduce the computation load of the control device and to improve the power transmission efficiency of the continuously variable transmission while preventing the endless belt thereof from slipping.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: June 16, 2015
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kyohei Sakagami, Hirohiko Totsuka, Masato Shigenaga
  • Publication number: 20150149052
    Abstract: A shift control apparatus for a vehicle may include a GPS sensor detecting a vehicle location, a navigation device outputting short-distance road information and long-distance road information using the vehicle location, a vehicle controller restoring forward road information using the short-distance road information and the long-distance road information, and determining a degree of curve and an average degree of inclination of a road using the forward road information, and a vehicle shifting unit having a shift controller controlling a shift pattern of a transmission using the degree of curve and the average degree of inclination.
    Type: Application
    Filed: September 30, 2014
    Publication date: May 28, 2015
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Dong Hoon Jeong, Joseph D. Chang, Byeong Wook Jeon
  • Patent number: 9043100
    Abstract: The present invention provides for a transmission shift assembly for a vehicle and methods of monitoring and controlling the same. The transmission shift assembly includes a transmission having a shift position member movable between a plurality of gear positions, an actuator configured to move the shift position between the gear positions, and a linkage coupled to the actuator and movable between a plurality of positions in response to movement of the actuator. The assembly further includes a controller to control the actuator, an ignition to receive a key, and at least one key sensor positioned within the ignition and configured to transmit a signal to the controller upon sensing removal of the key, the controller controlling the actuator to move the shift position member to a predetermined gear position upon receiving the signal from the key sensor that the key has been removed from the ignition.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: May 26, 2015
    Assignee: Steering Solutions IP Holding Corporation
    Inventor: James E. Rouleau
  • Patent number: 9043101
    Abstract: In an arrangement for controlling an automatically shifting transmission, as a result of a corresponding programming of an electric control device, when actuating a second selecting device, starting from the automatic mode, first an immediate upshifting or downshifting can be prompted and is permitted unless prevented by a specified condition. In the case of a brief actuation, a first or further immediate upshifting and/or downshifting can be prompted and the current or thereby reached gear will be maintained until, first, the duration of the actuation has reached the specific minimum duration and, second, the actuation of the selecting device was terminated. When the second selecting device has a first operating element for the manual triggering of an upshift command and a second operating element for the manual triggering of a downshift command, the event controlling the return to the automatic mode may be the recognition of the simultaneously present commands downshifting and upshifting.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: May 26, 2015
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Matthias Reichler, Andreas Segerer
  • Publication number: 20150142282
    Abstract: A method of controlling the shifting of gears in a TMED-type hybrid vehicle may include a stage in which, in a case where it is required that a power-on upshift operation is performed simultaneously when engagement of an engine clutch is carried out in order to convert the driving mode from an electric vehicle (EV) driving mode to hybrid-electric vehicle (HEV) driving mode, simultaneously performs the engagement of the engine clutch and the shift operation, thereby improving acceleration and shifting performances and providing a quick driving response for a driver.
    Type: Application
    Filed: August 13, 2014
    Publication date: May 21, 2015
    Applicant: Hyundai Motor Company
    Inventors: Soo Bang LEE, Tai Jin Jung
  • Patent number: 9031753
    Abstract: A control apparatus for an automatic transmission that selectively engages a plurality of frictional engaging elements for shift control includes a shift instruction device, a temperature calculator, an engageability determiner, an engagement delay device, a load calculator, a cumulative load calculator, and a threshold temperature changer. The engageability determiner is configured to determine whether at least one of the plurality of frictional engaging elements is engageable or not based on a comparison between a temperature of the at least one of the plurality of frictional engaging elements calculated by the temperature calculator and a predetermined threshold temperature in a case where the shift instruction device outputs a shift instruction. The threshold temperature changer is configured to change the predetermined threshold temperature in a case where a cumulative load calculated by the cumulative load calculator reaches a value greater than or equal to a predetermined value.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: May 12, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventor: Takashi Satoyoshi
  • Patent number: 9026327
    Abstract: A method for controlling a transmission of a powertrain system includes executing a single source shortest path search to identify a preferred shift path originating with an initial powertrain state and terminating at a target powertrain state, wherein the single source shortest path search employs transition-specific costs and situational costs to identify the preferred shift path. The preferred shift path is executed to achieve the target powertrain state.
    Type: Grant
    Filed: May 2, 2012
    Date of Patent: May 5, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Lawrence A. Kaminsky, Besim Demirovic, Pinaki Gupta, Anthony H. Heap
  • Patent number: 9020714
    Abstract: For each engine operation state to which a variable cylinder engine can be switched, a fuel consumption amount to be consumed to generate a driving force required to maintain a current traveling state of a vehicle for each of a current gear and a new gear after a possible shift-up is calculated. An automatic shift control of shifting up to the new gear is performed in a condition that a calculated fuel consumption amount of the new gear after the possible shift-up is smaller than a calculated fuel consumption amount of the current gear. In this way, the fuel consumption amount can be optimally reduced and the shift control can be performed without degrading the traveling performance, even in the vehicle equipped with the variable cylinder engine.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: April 28, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hiroshi Saito, Yutaka Ishikawa
  • Patent number: 9020716
    Abstract: A control device for a vehicle drive device that includes a drive source that outputs a drive force for running and an automatic transmission that has multiple speeds, the control device includes: a blipping control device that performs blipping control in which an output torque of the drive source is changed irrespective of an accelerator operation when a manual downshift of the automatic transmission is performed, and that changes a timing to perform next blipping control in a learning manner on the basis of an undershoot amount of a turbine speed at start of shifting of the automatic transmission.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: April 28, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keisuke Ota, Hitoshi Matsunaga
  • Patent number: 9020715
    Abstract: A hierarchical control system for a tandem axle assembly for a vehicle is provided. The hierarchical control system includes a vehicle level controller, an actuator, a shift controller, and a sensor. The shift controller is capable of placing the tandem axle assembly in at least a first operating condition and a second operating condition using the actuator. In response to the sensor and an operating condition of at least one of the power source and the transmission of the vehicle, the shift controller adjusts a manner of placing the tandem axle assembly in at least one of the first operating condition and the second operating condition. The hierarchical control system facilitates performing a shifting procedure in an automatic manner or as desired by an operator of the vehicle without excessively increasing a cost and a complexity of the tandem axle assembly.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: April 28, 2015
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventors: Richard A. Nellums, Ananthakrishnan Surianarayanan, Sameer A. Joshi, Sajeev C. Krishnan, Daniel G. Smedley, Ronald K. Markyvech, Sidharth Renganathan, Steven J. Wesolowski
  • Publication number: 20150112559
    Abstract: Method for executing gearshifts interlaced into each other in an automatic transmission with several shifting elements, whereas, upon the execution of gearshifts interlaced into each other, first shifting elements are open or switched off, and second shifting elements are closed or switched on, namely in such a manner that, as a second shifting element, at least one positive-locking shifting element is closed, whereby, with the activation of a positive-locking shifting element to be closed, there is a monitoring of whether, within a time interval after the activation of the particular positive-locking shifting element to be closed, the transmission ratio of the automatic transmission is within the tolerance band and is thus constant, and/or whether an end position sensor of the particular positive-locking shifting element to be closed detects a completely engaged position of the positive-locking shifting element to be closed, whereby, if at least one of these conditions is met, a proper closing of the particu
    Type: Application
    Filed: October 15, 2014
    Publication date: April 23, 2015
    Inventors: Markus Maurer, Christian Villing
  • Publication number: 20150112558
    Abstract: In one aspect, a computer-implemented method for enhancing the performance of a continuously variable transmission of a work vehicle may include engaging a range clutch of the continuously variable transmission, cycling a directional clutch of the continuously variable transmission between an engaged state and a disengaged state while the range clutch is engaged and controlling a position of a swash plate of the continuously variable transmission such that a ground speed of the work vehicle is maintained substantially at zero while the directional clutch is cycled between the engaged and disengaged states.
    Type: Application
    Filed: August 26, 2014
    Publication date: April 23, 2015
    Inventors: Pawel Kuros, Peter Dix
  • Patent number: 9014933
    Abstract: An electric tool has a housing, a motor disposed in the housing, an output shaft, a first planetary gear transmission mechanism, having a power input member, disposed between the motor and the output shaft, and a locking mechanism, having a power output member. The locking mechanism has a locked state and an unlocked state. When torsion is transmitted from the motor to the output shaft, the locking mechanism is in the unlocked state, and the output shaft is driven by the motor to rotate to perform electric operation. When the output shaft reversely receives a force, the locking mechanism is in the locked state, and the power input member of the first planetary gear transmission member is locked to perform manual operation.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: April 21, 2015
    Assignee: Chervon (HK) Limited
    Inventors: Liang Chen, Wu Chen
  • Patent number: 9014932
    Abstract: An automatic transmission capable of improving stability and reliability of connection operation of a synchronization mechanism when pre-shift control is executed, thereby making it possible to prolong the service life of the mechanism and improve marketability thereof. To change the speed position of a vehicle, one of two power transmission paths from an internal combustion engine to drive wheels is switched to the other, and pre-shift control is executed before switching the path. In doing this, when conditions for executing the pre-shift control are satisfied, whether or not a motive power fluctuation state of the engine occurs after satisfaction of the execution conditions is determined. If the motive power fluctuation state occurs, delay control for delaying the start of the pre-shift control is executed, whereas if the same does not occur, the pre-shift control is executed without executing the delay control.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: April 21, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventor: Yoshikazu Nemoto
  • Patent number: 9008891
    Abstract: A method of rationalizing a plurality of temperature sensors associated with a plurality of electrical systems of a vehicle includes: maintaining each of the respective electrical systems of the vehicle in a non-operational state for a predetermined period of time; receiving a temperature reading from each of the plurality of temperature sensors following the predetermined period of time; computing a master-reference temperature value from the plurality of received temperature readings; determining a difference between each of the respectively received temperature readings and the computed master-reference temperature value; comparing each determined difference to a threshold; and providing an indicator if one or more of the determined differences exceeds the threshold.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: April 14, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Kevin P Houle, Andrew M. Zettel, Kathryn E Mulligan, Paul A Adam
  • Patent number: 9002603
    Abstract: A method of operating a transmission of a vehicle drive-train when a gearshift from a current gear toward a target gear has been requested. The transmission having frictional shifting elements and at least one interlocking shifting element. If an actuating electrical current, equivalent to a closed operating condition of the frictional shifting element to be engaged, and an actuating electrical current, equivalent to an open operating condition of the interlocking shifting element to be disengaged, are determined while, at the same time, a closed operating condition of the interlocking shifting element to be disengaged is detected by a sensor, a fault is recognized. If the fault is recognized during a predefined test period, one or more selected shifting elements are disengaged and a force flow in the transmission is interrupted. Alternatively, by disengaging the frictional shifting element to be engaged, the current gear is engaged in the transmission.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: April 7, 2015
    Assignee: ZF Friedrichshafen AG
    Inventors: Jorg Arnold, Valentine Herbeth, Georg Mihatsch
  • Patent number: 9002604
    Abstract: A target shift stage comes to a high speed stage at t2, during reduction toward zero of a motor torque by an accelerator pedal releasing operation from t1, and an up-shift shift request along with the torque reduction is generated. The shift request is executed for the first time at t3, and the automatic transmission is shifted up to a high speed stage from a current low speed stage selecting state. Therefore, even in the case that a request for increasing a motor regenerative torque is issued by a braking operation just after (t2 to t3) an up-shift shift request moment t2 in response to the torque reduction, the gear shift in response thereto is not generated, and it is possible to avoid generation of repeated gear shift of low speed stage?high speed stage?low speed stage for a short time.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: April 7, 2015
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Ryohei Toyota
  • Patent number: 9002601
    Abstract: In a shift control apparatus of a continuously variable transmission (CVT) configured to steplessly vary a torque, the control apparatus employs an acceleration intention determination section for determining the presence or absence of a driver's acceleration intention, a shift mode setting section for setting a shift-control mode from a normal mode to an acceleration mode in the presence of the driver's acceleration intention, a shift speed setting section for setting a shift speed based on a target transmission ratio and a vehicle speed, and a shift control section for controlling a shift of the CVT. Also provided is a shift speed correction section for correcting the shift speed for an initial downshift in the acceleration mode to a shift speed slower than the shift speed set by the shift speed setting section, only when a demanded degree of the driver's acceleration intention is small.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: April 7, 2015
    Assignee: Jatco Ltd
    Inventors: Tomoaki Kabe, Nobuhiko Morifuji, Keisuke Ichikawa, Nobuhide Kato, Yuki Ono, Hiromu Ogino, Yukinobu Sakakibara, Hisao Nakanishi, Takahiro Nakata, Mitsuki Ishizuka
  • Patent number: 9002602
    Abstract: A method of determining a current operating range of a transfer case includes continuously calculating current Combined Drive Ratio (CDR), and categorizing the current CDR into one of a pre-determined number of expected CDRs. Counters are used to track when the current CDR is identified as an expected CDR. The different counters are then analyzed using simple mathematical operations to identify which gear ratio the transfer case is currently operating in.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: April 7, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Peter John Giles, Michael A. Turley
  • Patent number: 8996223
    Abstract: The invention relates to an engine operation start control device of a hybrid vehicle comprising a power output device having an internal combustion engine and an electric motor. In this hybrid vehicle, an intermittent control for intermittently operating the engine can be performed and when the operation of the engine is started during the intermittent control being performed, a cranking of the engine is performed until the engine speed reaches a target engine speed. According to the invention, in case that the operation of the engine is started when the speed of the hybrid vehicle is higher than or equal to a predetermined speed and a power required for the power output device is larger than or equal to a predetermined power, the engine speed, which increases as the speed of the hybrid vehicle increases, is set as the target engine speed.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: March 31, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideki Kamatani, Kenta Watanabe
  • Patent number: 8996264
    Abstract: A control device for continuously variable transmission includes an operating state detection means for detecting an operating state of a vehicle including a vehicle speed and an accelerator pedal opening, a control means for controlling a speed ratio of a continuously variable transmission based on the operating state, an acceleration request determination means for determining the presence or absence of an acceleration request of a driver based on the accelerator pedal opening, and a speed ratio setting means for setting a speed reduction ratio controlled by the control means to be smaller with an increase in an acceleration start vehicle speed if the accelerator pedal opening is equal during acceleration. The control means updates the acceleration start vehicle speed to a vehicle speed at the time of a determination after determining that the accelerator pedal opening has been increased during acceleration.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: March 31, 2015
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tomoyuki Suzuki, Akihiro Makiyama
  • Patent number: 8996263
    Abstract: An electronic controller for a variable ratio transmission and an electronically controllable variable ratio transmission including a variator or other CVT are described herein. The electronic controller can be configured to receive input signals indicative of parameters associated with an engine coupled to the transmission. The electronic controller can also receive one or more control inputs. The electronic controller can determine an active range and an active variator mode based on the input signals and control inputs. The electronic controller can control a final drive ratio of the variable ratio transmission by controlling one or more electronic solenoids that control the ratios of one or more portions of the variable ratio transmission.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: March 31, 2015
    Assignee: Fallbrook Intellectual Property Company LLC
    Inventors: Stanley B. Quinn, Jr., Alan L. Miller, Scott R. Anderson
  • Publication number: 20150088393
    Abstract: A method for controlling a powertrain includes the following steps: (a) determining whether a vehicle is coasting to a stop based on an accelerator pedal position; (b) determining whether an automatic transmission is in first gear; (c) shifting an input clutch from an engaged state to a disengaged state in order to operatively disconnect the automatic transmission from an internal combustion engine if the vehicle is coasting to a stop and the automatic transmission is not in first gear; and (d) shifting the automatic transmission to the first gear in order to allow the internal combustion engine to be shut down while the vehicle is coasting to a stop.
    Type: Application
    Filed: September 26, 2013
    Publication date: March 26, 2015
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Martin Gentile, Armin Mueller