By Changing Shift Map, Schedule, Or Pattern Patents (Class 701/55)
  • Patent number: 10800396
    Abstract: Systems and methods for operating a hybrid powertrain that includes an engine and a motor/generator are described. The systems and methods provide a way of prepositioning an engine to improve a range of driveline disconnect clutch transfer function adaptation. In one example, an engine is positioned at a location where its torque to turn exceeds a threshold torque.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: October 13, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Stuart Ford, Alexander O'Connor Gibson, Corey Blue
  • Patent number: 10800397
    Abstract: A control apparatus for hybrid electric vehicle includes a shift operation detector and an electric motor controller. The shift operation detector detects an input of a shift operation. The electric motor controller controls an electric motor of the hybrid electric vehicle to generate motor torque directed to decreasing of torque difference, on a condition that: the input of the shift operation from a first stage into a second stage is detected by the shift operation detector; and first torque and second torque are different in magnitude from each other by the torque difference. The first torque is torque that is to be transmitted to a drive wheel during shifting of the automatic transmission. The second torque is torque that is to be transmitted to the drive wheel after the shifting of the automatic transmission is completed.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: October 13, 2020
    Assignee: SUBARU CORPORATION
    Inventors: Fumiyuki Moriya, Yuichi Tanaka
  • Patent number: 10773597
    Abstract: An autonomous vehicle controller includes a memory and a processor programmed to execute instructions stored in the memory. The instructions include determining a plurality of energy cost functions. Each energy cost function is associated with a combination of candidate variables. The instructions further include selecting one of the plurality of energy cost functions as a minimum energy cost function, determining a combination of candidate variables associated with the minimum energy cost function, and controlling acceleration of a host vehicle according to the combination of candidate variables associated with the minimum energy cost function.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: September 15, 2020
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Yanan Zhao, Chen Zhang, Ming Lang Kuang
  • Patent number: 10752188
    Abstract: In one aspect, a system and method allow for various pairs of candidate gear ratios and engine speeds to be identified for achieving a desired ground speed of a work vehicle. The individual operating efficiency of the vehicle's fan and/or alternator may then be analyzed for each pair of transmission/engine settings to estimate the associated parasitic power loss(es) for such component(s). Based on the parasitic power loss(es) determined for each transmission/engine setting, a net engine power or torque requirement can be calculated and used as an input for determining the fuel efficiency of the work vehicle at each candidate setting. The gear ratio and corresponding engine speed of the candidate setting associated with the lowest fuel consumption may then be set as the target or desired transmission/engine setting for maintaining the work vehicle at the desired ground speed.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: August 25, 2020
    Assignee: CNH Industrial America LLC
    Inventors: Brian A. Hartman, Rowland J. Milburn, Jr., Rajeshwar Adupala, Shreedhra Bindingnavle, Ashraf Omran
  • Patent number: 10661801
    Abstract: A transmission controller gives an engagement instruction to a forward clutch so that the forward clutch is engaged when a rotation speed of the engine becomes a target engine rotation speed set on the basis at least of a vehicle speed and a speed ratio of a continuously variable transmission after the engine is started, if a cancellation request for a sailing-stop control is made during execution of the sailing-stop control, and the continuously variable transmission is downshifted before the forward clutch is engaged, if the target engine rotation speed when the cancellation request for the sailing-stop control is made is less than a first predetermined value.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: May 26, 2020
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Yoshimasa Nishihiro, Yusuke Oota, Shintaro Ohshio
  • Patent number: 10661776
    Abstract: An apparatus for controlling a transmission of a vehicle includes: a prediction device that obtains first driving data of the vehicle while driving in a predetermined section of a road ahead of a speed bump and predicts second driving data of the vehicle behind the speed bump, based on the first driving data of the vehicle; a calculation device that calculates a predicted gear ratio of the transmission, based on the predicted second driving data and a grade of the predetermined section of the road ahead of the speed bump; and a controller that determines a target gear ratio into which a current gear ratio of the transmission is to be shifted based on the predicted gear ratio and performs transmission control for the vehicle according to the determined target gear ratio.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: May 26, 2020
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Jae Chang Kook, Kwang Hee Park, Byeong Wook Jeon, Sang Jun Park
  • Patent number: 10619724
    Abstract: A method of adjusting deceleration dependent shift points to maintain a target minimum turbine speed includes calculating a vehicle speed offset based on vehicle acceleration rate a predicted downshift delay for the target minimum turbine speed and converting the target minimum turbine speed to a target vehicle speed based on the deceleration condition. Thereafter, the method continues with determining a target gear based on the vehicle speed offset and the target vehicle speed, and downshifting to the target gear having vehicle speed less than or equal to a vehicle speed corresponding to the current turbine speed. The method ends with maintaining the target gear until a shift delay period is greater than a predetermined delay threshold.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: April 14, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Henry R Wright, Brandon M Fell, Martin Gentile, Rainer Kloesel, Falko Hendrischke, Julian Heinz, Marcel Wachtel
  • Patent number: 10539228
    Abstract: In the present invention: a road information acquisition unit (12a) acquires road information about a prescribed section of road ahead of a vehicle traveling at a first shift position; a vehicle information acquisition unit (12b) acquires vehicle information; a speed prediction unit (12c) predicts, on the basis of the road information and the vehicle information, the speed transition in the prescribed section for when the vehicle will have traveled through the prescribed section at the first shift position; and a gearshift control unit (12d) causes a transmission (5) to downshift to a second shift position when the minimum value of the predicted vehicle speed is less than a prescribed speed.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: January 21, 2020
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Shinichi Ishiguro, Nobuyuki Nishimura, Masao Nishikimi
  • Patent number: 10415701
    Abstract: An electronic control unit is configured to control a hydraulic pressures of engaging element and disengaging element in accordance with a preset target output shaft torque during a power-on downshift. The electronic control unit is configured to delay a start of decrease in the hydraulic pressure of the disengaging element from a start of a torque phase while maintain the hydraulic pressure of the disengaging element at the start of the torque phase. The electronic control unit is configured to start decreasing the hydraulic pressure of the disengaging element when the electronic control unit determines that overspeed of an input shaft is occurring during the torque phase and a predetermined condition is established.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: September 17, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohiro Chimbe, Norihiro Tsukamoto, Keisuke Ota, Tomohiro Asami, Hiromasa Takai, Daiki Fukuda
  • Patent number: 10308234
    Abstract: A control device that switchably has a first drive mode which is attained with the fixing mechanism being in the non-fixing state and in which a rotational speed of the input is steplessly shifted and transmitted to the output and torque of the second rotating electrical machine is transmitted to the output, and a second drive mode which is attained with the fixing mechanism being in the fixing state and the decoupling mechanism being in the non-transmitting state and in which, with the second rotating electrical machine being decoupled from the output, the rotational speed of the input is shifted according to a gear ratio of the differential gear unit and transmitted to the output.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: June 4, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Shigeki Takami, Toru Souda, Tatsuya Hasegawa
  • Patent number: 10304327
    Abstract: A method for adjusting a safety margin threshold of one or more driver support functions of a vehicle, to be suitable for a driving zone in which the vehicle is—or is to be—positioned comprises determining a geographical position of the vehicle, determining a driving zone associated with the vehicle position, which driving zone is selected from one or more pre-defined geographical driving zones, deriving previous statistical driving behaviour data indicative of one or more statistical driving style safety indicators associated with the driving zone, and adjusting a safety margin threshold of at least a first driver support function of the vehicle, based on the one or more statistical driving style safety indicators. The disclosure also relates to a driver support threshold adapting system in accordance with the foregoing, and a vehicle at least partly comprising such a driver support threshold adapting system.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: May 28, 2019
    Assignee: VOLVO CAR CORPORATION
    Inventors: Per Landfors, Andrew Backhouse
  • Patent number: 10274079
    Abstract: An electronic control unit is configured to set a target torque phase time which is used in torque phase control based on an output shaft torque difference. The electronic control unit sets the target torque phase time to be longer when the output shaft torque difference is large than when the output shaft torque difference is small. Accordingly, since the target torque phase time can be appropriately set, it is possible to achieve both of preventing a sudden change in driving force and torsion vibration of an output shaft and preventing a decrease in drivability due to hesitation at the same time. Sudden change in driving force and torsion vibration of the output shaft occur when the difference in driving force between before and after a gear shift is large. Hesitation occurs when the difference in driving force between before and after the gear shift is small.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: April 30, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohiro Chimbe, Norihiro Tsukamoto, Keisuke Ota, Tomohiro Asami
  • Patent number: 10137897
    Abstract: A system and method that detects, using processing circuitry, a predetermined energy condition. The processing circuitry determines a geographic location of a vehicle, identifies at least one energy station as a function of a plurality of factors, determines a vehicle range based on an energy level of the vehicle and a first mode of vehicle operation, determines whether an energy saving condition is satisfied based on the vehicle range, a location of the at least one energy station, and the geographical location of the vehicle, and enters an economy mode when the energy saving condition is satisfied.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: November 27, 2018
    Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
    Inventor: Christopher M. Higgins
  • Patent number: 10054225
    Abstract: A self-propelled off-road agricultural vehicle with a dynamically reconfiguring speed control and display system is provided that allows for on-the-go range selection and range modification, without having to release a joystick control and while providing range and speed information on an animated or dynamically reconfiguring speedometer. The system may include an animated speedometer that automatically reconfigures to shown visually change in a manner that shows changed range characteristics including different ranges and different range maximum speeds. This may include changing color of a sweep portion of a dynamic scale of the animated speedometer. The system may allow dual speed change capability configured to allow an operator to change the limits of the speed ranges through either a touchscreen such as an HMI (human machine interface) or control buttons of a grip of a joystick.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: August 21, 2018
    Assignee: CNH Industrial America LLC
    Inventors: Roy A. Bittner, Nathan Paul Brooks
  • Patent number: 10005449
    Abstract: A motive power system includes a first energy storage, a second energy storage, an actuator, an internal combustion engine, an electric generator, a power transmission circuit, and circuitry. The circuitry is configured to control the power transmission circuit to charge at least the second energy storage via the electric generator. The circuitry is configured to control the power transmission circuit to charge the first energy storage with electric power supplied from the second energy storage when a first charge rate of the first energy storage is lower than a first threshold.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: June 26, 2018
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Daijiro Takizawa, Hirokazu Oguma
  • Patent number: 9950709
    Abstract: A target ratio module selectively determines a target ratio of transmission input shaft speed to transmission output shaft speed independently of an accelerator pedal position and as a function of a vehicle speed and a driver axle torque request. A first pulley valve control module controls opening of a first valve based on the target ratio. The first valve controls transmission fluid flow to a first pulley actuator. The first pulley actuator is coupled to the transmission input shaft of a continuously variable transmission (CVT) and expands and contracts based on transmission fluid pressure. A second pulley valve control module controls opening of a second valve based on the target ratio. The second valve controls transmission fluid flow to a second pulley actuator. The second pulley actuator is coupled to the transmission output shaft of the CVT and expands and contracts based on transmission fluid pressure.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: April 24, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Artin Farahani, Christopher Jay Weingartz, John E. Marano
  • Patent number: 9874278
    Abstract: A control device for an automatic transmission disposed in a vehicle driving system, the automatic transmission having an engaging clutch as shift element, has a shift controller that performs a shift control of the automatic transmission. The shift controller is configured such that, during a shift control to release the engaging clutch in response to a first shift request and after determination of a releasing start of the engaging clutch, when a second shift request to engage the engaging cutch is generated, the shift control in response to the first shift request will be continued.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: January 23, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Ryohey Toyota, Atsushi Tsukizaki, Toshifumi Hibi, Yutaka Kaneko
  • Patent number: 9765880
    Abstract: A hydraulic control device that includes a solenoid valve capable of supplying a first engagement pressure to the first engagement element; and a first cut valve that is interposed in an oil passage from the solenoid valve to the first engagement element and is capable of cutting off supply of a hydraulic pressure to the first engagement element, wherein only the first engagement pressure and a second engagement pressure serve as hydraulic pressures that act such that the first cut valve cuts off the supply of the hydraulic pressure to the first engagement element, and the first cut valve is switched so as to cut off the supply of the hydraulic pressure to the first engagement element when the first engagement pressure and the second engagement pressure are simultaneously supplied to the first engagement element and the second engagement element, respectively.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: September 19, 2017
    Assignee: AISIN AW CO., LTD.
    Inventors: Yoshihiro Maeda, Nobuyuki Hirai, Masamichi Yamaguchi, Yoshimitsu Hyodo, Kenichi Tsuchida, Hiroyuki Kutsubo
  • Patent number: 9726277
    Abstract: A hydraulic control device that includes a solenoid valve capable of supplying a first engagement pressure to the first engagement element; and a first cut valve that is interposed in an oil passage from the solenoid valve to the first engagement element and is capable of cutting off supply of a hydraulic pressure to the first engagement element, wherein only the first engagement pressure and a second engagement pressure serve as hydraulic pressures that act such that the first cut valve cuts off the supply of the hydraulic pressure to the first engagement element, and the first cut valve is switched so as to cut off the supply of the hydraulic pressure to the first engagement element when the first engagement pressure and the second engagement pressure are simultaneously supplied to the first engagement element and the second engagement element, respectively.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: August 8, 2017
    Assignee: AISIN AW CO., LTD.
    Inventors: Yoshihiro Maeda, Nobuyuki Hirai, Masamichi Yamaguchi, Yoshimitsu Hyodo, Kenichi Tsuchida, Hiroyuki Kutsubo
  • Patent number: 9702453
    Abstract: A system and method for automatically shifting a vehicle based upon monitored conditions. The system includes a sensor assembly configured to detect a tilt of the vehicle, an acceleration sensor configured to detect whether the vehicle is accelerating, and a throttle sensor configured to detect whether the throttle is activated. The system further includes a computer configured to automatically shift the transmission of the vehicle to neutral when all of the monitored conditions are satisfied. In one embodiment, if one of the conditions ceases to be satisfied, then the logic causes the transmission of the vehicle to shift back from neutral to the prior gear.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: July 11, 2017
    Inventor: Lam Dinh
  • Patent number: 9701401
    Abstract: A system and method for objectively evaluating an airport runway condition, where conditions pertaining to aircraft landing factors are compiled and used to determine a runway braking condition. One set of conditions pertains to aircraft landing factors, including brake metered pressure, wheel speed, and aircraft deceleration, and a second set of factors relate to pilot controlled parameters. A condition report is generated and made available to pilots of subsequently landing aircrafts prior to landing.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: July 11, 2017
    Assignee: Hydro-Aire, Inc.
    Inventors: Ronald Raby, John Gowan, Gregg Duane Butterfield
  • Patent number: 9611934
    Abstract: A shift control apparatus for an automatic transmission includes a controller. The controller is configured to control the automatic transmission. The automatic transmission includes a first input shaft, a second input shaft, an output shaft, a first clutch, a second clutch, and gear trains. In a case where a standby shift stage does not lie between a predetermined current shift stage and a target shift stage, the controller controls the first clutch to be disengaged and the second clutch to be engaged, and then controls a synchronizing device among synchronizing devices for the predetermined current shift stage to be disengaged and a synchronizing device among the synchronizing devices for the target shift stage to be engaged during a disengagement of the first clutch, and then controls the second clutch to be disengaged and the first clutch to be engaged.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: April 4, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Masashi Eto, Yoshiharu Saito, Hiroki Endo
  • Patent number: 9464712
    Abstract: A vehicle includes a motor, a resolver which detects a rotation angle of the motor, an automatic transmission which shifts rotation of the motor and transmits the shifted rotation to a drive shaft, and an ECU which performs learning control for correcting an error of the resolver and shift control of the automatic transmission. The ECU controls the automatic transmission such that, when the learning control is performed, a gear ratio becomes higher at a prescribed vehicle speed, than that when the learning control is not performed. By controlling the automatic transmission as described above, even when the vehicle is traveling at a low speed, a rotation speed of the motor easily reaches a rotation speed at and above which the learning control of the resolver can be performed. Accordingly, an opportunity to perform the learning control of the resolver can be obtained early.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: October 11, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Uchida, Ryoji Sato
  • Patent number: 9403532
    Abstract: The present invention provides a method of reducing the output speed of a transmission in a vehicle, whereby the transmission includes a speed sensor and a controller and the vehicle includes a proximity sensor. The method includes measuring the output speed with the speed sensor and comparing the measured output speed to an output speed threshold. The controller receives throttle percentage and compares the throttle percentage to a throttle threshold. The method further includes receiving an input signal from the proximity sensor and comparing the input signal to a signal threshold. The output speed of the transmission can be controlled based on the values of the measured output speed, throttle percentage, and input signal.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: August 2, 2016
    Assignee: Allison Transmission, Inc.
    Inventors: Randall S. Conn, Mark A. Rains
  • Patent number: 9347557
    Abstract: Methods and systems are provided for operating a vehicle with a transmission. In one example approach, a method for a vehicle comprises, during a transmission shift having a first engine speed profile, adjusting a transmission shift indication provided to a vehicle operator based on a desired perceived shift time and a desired engine deceleration rate.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: May 24, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Jeffrey Allen Doering, Davor Hrovat
  • Patent number: 9333911
    Abstract: In a vehicle equipped with a vehicle sound system, determining a virtual fixed gear ratio; determining a virtual RPM based on the virtual fixed gear ratio; generating a set of harmonic signals based on the virtual RPM, the harmonic signals being sine-wave signals proportional to harmonics of the virtual RPM; processing the harmonic signals to produce a set of processed harmonic signals; and in the vehicle sound system, transducing the processed harmonic signals to acoustic energy thereby to produce an engine sound within a passenger cabin of the vehicle.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: May 10, 2016
    Assignee: Bose Corporation
    Inventors: Cristian M. Hera, Ben J. Feng
  • Patent number: 9297455
    Abstract: A method for modifying a default transmission shift schedule for a vehicle includes monitoring current vehicle parameters and determining future roadway information at a predetermined distance in front of the vehicle. Future vehicle parameters are predicted based on the determined future roadway information. The default transmission shift schedule is modified based on the current vehicle parameters and the predicted future vehicle parameters.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: March 29, 2016
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Dongxu Li
  • Patent number: 9279495
    Abstract: A computer-implemented method and a control system are described for controlling the shifting of a vehicle, at least in part, according to its pitch. The method includes using a pitch-detection mechanism to determine one or more indicators of the pitch of the vehicle. The method includes receiving, at one or more computing devices, a signal associated with the pitch indicators and determining a pitch value for shifting. The method further includes determining, by the one or more computing devices, a shift procedure based upon, at least in part, the determined pitch value and implementing the shift procedure to effect a shift operation for the vehicle.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: March 8, 2016
    Assignee: DEERE & COMPANY
    Inventors: William J. Vande Haar, Jeffery M. Finley
  • Patent number: 9272700
    Abstract: A disconnect mechanism is configured to disconnect a predetermined rotating element from an engine and an auxiliary drive wheels while the vehicle is traveling in a two-wheel drive mode. The predetermined rotating element is configured to transmit power to the auxiliary drive wheels while the vehicle is traveling in a four-wheel drive mode. An electronic control unit is configured to: execute shift control when a shift condition of an automatic transmission is satisfied; selectively engage or release the disconnect mechanism based on a traveling state of the vehicle and a driver's predetermined operation; and control at least one of the automatic transmission or the disconnect mechanism such that a shift period based on the shift condition of the automatic transmission and an engagement-release period of the disconnect mechanism at least partially overlap with each other.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: March 1, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideki Tamoto, Masayuki Arai, Yoshiro Obayashi, Kunihiro Iwatsuki
  • Patent number: 9273777
    Abstract: In a manual transmission mode, a downshift instruction signal is outputted by a position sensor, and a shift range is lowered by one gear, as a result of an operation of a shift lever by the driver. The driving force of the vehicle is increased through downshifting. The number of times of downshifting within a predefined time is limited to a predefined number of times.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: March 1, 2016
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD.
    Inventors: Nobuyuki Tanaka, Masaya Amano, Shunsuke Oyama, Shoji Nagata
  • Patent number: 9109693
    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: Grant
    Filed: August 13, 2014
    Date of Patent: August 18, 2015
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Soo Bang Lee, Tai Jin Jung
  • Patent number: 9080669
    Abstract: A system and method of selecting optimum gear of automobile is provided. The system includes a data processor; a running vehicle data collection module; an output module; and a memory. The memory is stored with universal characteristic curve of an engine, gear ratios of a gearbox, speed reduction ratios, and a tire radius. The running vehicle data collection module collects and sends a current vehicle speed, revolutions of the engine, and an output torque of the engine to the data processor. The data processor processes the universal characteristic curve of the engine, the gear ratios of the gearbox, the speed reduction ratios, and the tire radius to determine a current gear and an optimum gear. The data processor outputs the optimum gear to the output module if the current gear is not the optimum gear. The system can select optimum gear in real time and lower fuel consumption.
    Type: Grant
    Filed: January 5, 2013
    Date of Patent: July 14, 2015
    Assignee: Xiamen King Long Motor Vehicle Inspection Co., LTD.
    Inventors: Yifan Xu, Xiaobing Chen, Weihong Ye, Fangming Zhou, Qiangsheng Liu
  • Patent number: 9073533
    Abstract: A system for improving performance of a hybrid vehicle at higher elevations. The system includes a plurality of wheels, an engine, an altitude sensor, a transmission, a memory for storing target engine speeds, and a processor. The engine provides a torque to the plurality of wheels through the transmission, based on gear ratios limited by a wide open throttle (WOT) guard. The altitude sensor determines an elevation of the vehicle. Above a certain threshold elevation, the processor changes the WOT guard to improve performance at lower gears, such as standing start performance.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: July 7, 2015
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventor: Christopher T. Gauthier
  • Patent number: 9067579
    Abstract: A method and system for controlling a powertrain in a vehicle includes steps including registering a road condition. If the registered road condition corresponds to normal road conditions then a first gear selection control algorithm is used intended for driving the vehicle in a normal mode corresponding to the conditions on an ordinary road. If the registered road condition corresponds to soft surface road conditions then a second gear selection control algorithm is used intended for driving the vehicle in a soft surface mode corresponding to the conditions on an soft surface road. In this way, a vehicle can be adapted to be provided with an AMT to work in a satisfactorily way under an increased diversity of conditions.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: June 30, 2015
    Assignee: Volvo Lastvagnar AB
    Inventors: Anders Eriksson, Niklas Öberg
  • Patent number: 9043102
    Abstract: A method of controlling a vehicle having a transmission system, an engine system, and a braking system includes detecting a braking condition of the braking system. The braking condition is at least one of a brake temperature being above a predetermined brake temperature limit and a braking load being above a predetermined braking load limit. The method also includes detecting a second condition of at least one of the transmission system and the engine system. The method also includes determining whether the second condition satisfies predetermined criteria. Furthermore, the method includes detecting an absolute vehicle acceleration that is below a predetermined acceleration limit. Moreover, the method includes downshifting from a current gear to a lower gear to thereby cause engine braking when the braking condition is satisfied, the second condition satisfies the predetermined criteria, and the absolute vehicle acceleration is below the predetermined acceleration limit.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: May 26, 2015
    Assignee: FCA US LLC
    Inventors: Frederic J. Boissinot, Yi Zhu, Zachary C. Rogalski
  • Patent number: 9037367
    Abstract: A control system having at least one sensor collecting data from a vehicle component such as a steering wheel. A processor determines if the data collected from the sensor is above or equal to a predetermined level. If the processor determines that the data is above a predetermined level, the processor indicates to the controller that the data is above that predetermined level and requires a prevention of upshifting of the transmission. A method of including controlling the transmission of a vehicle by a control system, sensing at least one vehicle property by a sensor in acquiring data relating to that property, storing the data in a data storage unit, determining if the data is above a predetermined level and sending a signal to a transmission of the vehicle if the data is above a predetermined level thereby preventing upshift of the transmission to the top two gears.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: May 19, 2015
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventor: Tai J. Ly
  • Publication number: 20150127231
    Abstract: Method for executing a gearshift in an automatic transmission (1) with several shifting elements, whereas, upon the execution of the gearshift, a first frictional-locking shifting element (B, C, D, E) is open or switched off and a second positive-locking shifting element (A, F) is closed or switched on, whereas, if, upon the execution of the gearshift, an input torque of the automatic transmission is then smaller than a threshold value, in particular upon the execution of a coast downshift, after at least the partial opening of the frictional-locking shifting element (B, C, D, E) and after the release of the positive-locking shifting element (A, F), there is a monitoring of whether the positive-locking shifting element (A, F) is transferred into its end position, whereas, if it is then determined that the positive-locking shifting element (A, F) has not been transferred into its end position, a torque transferred by the previously at least partially open frictional-locking shifting element (B, C, D, E) initia
    Type: Application
    Filed: November 5, 2014
    Publication date: May 7, 2015
    Inventors: Markus Maurer, Christian Villing
  • Patent number: 9026414
    Abstract: Methods and devices for determining speed control management settings are provided. A vehicle configuration is obtained, specifying at least a transmission, including a number of gears present in the transmission. One or more speed control management modules, such as progressive shift and/or gear down protection modules, are selected by a customer. One or more default progressive shift limits and a default gear down protection limit are calculated, along with gears for which they are active. Performance of the vehicle using the default speed control management settings is simulated and compared to typical vehicle performance. The customer may alter the speed control management settings within dynamically determined valid ranges. The speed control management settings are used in the manufacture or other configuration of the vehicle for the customer.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: May 5, 2015
    Assignee: PACCAR Inc
    Inventors: Erik S. Johnson, Richard Hampson, Zachary Slaton
  • 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: 9014931
    Abstract: A system for selecting shift schedules of a transmission of a vehicle configured to change gears according to two or more shift schedules includes a controller. The controller is configured to estimate mass of the vehicle based on a plurality of accelerations of the vehicle from a standstill, and estimate a road load of the vehicle based on the estimated mass. The controller is also configured to estimate a grade of terrain over which the vehicle is travelling based on the estimated mass of the vehicle. The controller is further configured to select between at least a first shift schedule and a second shift schedule based on at least one of the estimated mass of the vehicle, characteristics of the terrain over which the vehicle is travelling, the estimated grade of the terrain over which the vehicle is travelling, and functions capable of being performed by the vehicle.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: April 21, 2015
    Assignee: Caterpillar, Inc.
    Inventors: Thomas G. Palmer, James H. DeVore
  • Patent number: 9008930
    Abstract: A control apparatus for a vehicular automatic transmission configured to selectively establish a plurality of shift positions by respective combinations of frictional coupling devices of a plurality of frictional coupling devices in an engaged state thereof, with output hydraulic pressures of respective ones of a plurality of solenoid valves provided in a hydraulic control circuit, includes a fail-safe control portion configured to perform a predetermined fail-safe function when shifting direction values requiring a shifting control of said vehicular automatic transmission and shifting output values respectively generated according to said shifting direction values are not coincident with each other, said shifting output values being represented by respective electric signals for driving said plurality of solenoid valves.
    Type: Grant
    Filed: December 6, 2010
    Date of Patent: April 14, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hidenori Saito, Toshio Sugimura
  • Patent number: 9008931
    Abstract: A bicycle gear shift control system capable of avoiding frequent gear shifting includes: a power module; a microcomputer electrically connected to the power module for allowing a cyclist to switch between the automatic gear shifting mode and a manual gear shifting mode; a gear shifting driver electrically connected to the microcomputer, substantially connected to a derailleur, and instructed by the microcomputer to drive the derailleur to perform gear shift control; and a manual shifting controller electrically connected to the microcomputer. The microcomputer has an automatic gear shifting logic whereby the microcomputer determines the timing of automatic gear shifting and performs gear shifting. The microcomputer further has a gear shifting delay logic that involves delaying for a delay time interval from commencement of gear shifting according to a gear shifting criterion and ruling out all other gear shifting commands during the delay time interval.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: April 14, 2015
    Assignee: J.D. Components Co., Ltd.
    Inventor: Chi-Chang Cheng
  • Patent number: 9002595
    Abstract: A method regulates the torque output and/or speed output of a continuously variable transmission (CVT) in a manner that may simulate a clutch. The CVT may be incorporated in a machine and maybe operatively coupled to a power source and to a propulsion device. The method utilizes an unaltered torque-to-speed curve that relates the torque output to the speed output of the CVT. The method may receive an operator input signal indicating a desire to change operation of the machine. The torque-to-speed curve may be shifted in response to the operator input signal to limit the torque output available. In an aspect, an under-run curve may be applied to the torque-to-speed curve, the under-run curve corresponding to a target speed. The operator input signal may also shift the under-run curve to reduce the target speed.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: April 7, 2015
    Assignee: Caterpillar Inc.
    Inventors: Kevin Davis, Adam Nackers, Michael Barngrover, Brian D. Kuras
  • Patent number: 8996214
    Abstract: A hybrid working vehicle comprises an engine, a drive wheel, a power take-off (PTO) shaft, and a power transmission system for transmitting power from the engine to the drive wheel and the PTO shaft. The power transmission system is bifurcated at a bifurcating point into a traveling drive train for driving the drive wheel and a PTO drive train for driving the PTO shaft. A continuously variable transmission is provided on the traveling drive train, and a motor generator is provided on the power transmission system between the engine and the bifurcating point. The motor generator functions as a generator by power of the engine and functions as an electric motor for driving the power transmission system. The hybrid working vehicle includes a controller for controlling an output rotary speed of the motor generator functioning as the electric motor.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: March 31, 2015
    Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.
    Inventor: Norihiro Ishii
  • 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
  • Patent number: 8989974
    Abstract: When a request is made to change gears, the form-fitting shifting element being disengaged, for the requested gear change, is disengaged at a predefined target disengagement moment following the target disengagement moment. When the gear is actually changed, an actual disengagement moment is determined based on when the form-fitting shifting element begins disengaging and a transmission operating state variable. If there is a deviation between the actual moment and the target moment of disengagement, then the target disengagement moment is modified by a time value, and the moment when the form-fitting shifting element begins to be actuated is shifted in time in relation to the target moment of disengagement and/or actuation of the shifting element to be connected is adjusted to a determined characteristic of the operating state of the form-fitting shifting element to be disconnected such that it is disengaged approximately at the target disengagement moment.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: March 24, 2015
    Assignee: ZF Friedrichshafen AG
    Inventors: Jörg Arnold, Valentine Herbeth, Georg Mihatsch
  • Patent number: 8989940
    Abstract: A powertrain system is configured to transfer torque to an output member. A method for controlling the powertrain system includes prioritizing a plurality of system torque constraint parameters. The system torque constraint parameters are sequentially applied in an order of descending priority. A feasible state for each of the sequentially applied system torque constraint parameters is determined. A solution set including the feasible states for all the sequentially applied system torque constraint parameters is determined, and employed to control operation of the powertrain system in response to an output torque request.
    Type: Grant
    Filed: September 19, 2013
    Date of Patent: March 24, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Anthony H. Heap, Sean W. McGrogan
  • Patent number: 8989970
    Abstract: There is disclosed a continuously variable ratio transmission assembly (“variator”) comprising a roller which transmits drive between a pair of races, the roller being movable in accordance with changes in variator ratio, a hydraulic actuator which applies a biasing force to the roller, at least one valve connected to the actuator through a hydraulic line to control pressure applied to the actuator and so to control the biasing force, and an electronic control which determines the required biasing force and sets the valve accordingly, wherein the valve setting is additionally dependent upon a rate of flow in the hydraulic line.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: March 24, 2015
    Assignee: Torotrak (Development) Limited
    Inventor: Stephen William Murray
  • Patent number: 8983742
    Abstract: A control apparatus for controlling a vehicle having an automatic transmission arranged to transmit a vehicle drive force from a drive power source of the vehicle to drive wheels of the vehicle, such that a shift-down operation of the automatic transmission is performed as a result of a kick-down operation, the control apparatus includes a shift-down operation permitting/inhibiting portion configured to restrict the shift-down operation of the automatic transmission as a result of the kick-down operation, if a running speed of the vehicle upon detection of the kick-down operation is lower than a lower limit predetermined for a presently established gear positions or speed ratio of the automatic transmission.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: March 17, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takaaki Tokura, Hiroyuki Sawada, Naoto Moriya
  • Patent number: 8983678
    Abstract: A system for a vehicle includes a speed determination module, a buffer module, and a speed prediction module. The speed determination module determines changes in measured vehicle speed. The buffer module stores the determined changes in measured vehicle speed. The speed prediction module predicts a speed of the vehicle when the measured vehicle speed is less than a predetermined threshold, wherein the predicted vehicle speed is based on an average of the stored changes in measured vehicle speed.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: March 17, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Justin Louie, Xuefeng Tim Tao