Clutch Control Patents (Class 701/67)
  • Patent number: 11358586
    Abstract: Methods and systems are provided for operating a hybrid vehicle during launch conditions from rest. In one example, a driver demand torque is held constant until a threshold vehicle speed is reached when a constant accelerator pedal position is present so that closing of a transmission input clutch may result in reduced driveline torque disturbances while a desired driver demand torque is delivered.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: June 14, 2022
    Assignee: Ford Global Technologies, LLC
    Inventors: Jason Meyer, Kevin Ruybal, Bhavesh Paradkar, Todd Mccullough
  • Patent number: 11338660
    Abstract: A modular electric axle head assembly for a vehicle, including a gear assembly including a gear assembly housing defining a hollow portion therein, a first gear shaft having a first gear, a second gear shaft having a second gear and a third gear, wherein at least a portion of the second gear is drivingly connected to the first gear and the third gear, and at least a portion of the gear assembly is disposed within the hollow portion of the gear assembly housing; a motor assembly having an output shaft that is drivingly connected to at least a portion of the gear assembly; and a first mounting assembly including a portion integrally connected to the modular electric head assembly and a portion integrally connected to a support member of the vehicle, wherein at least a portion of the third gear is drivingly connected to a pair of drive shafts.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: May 24, 2022
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventors: Nicholas W. Laforce, Steven G. Slesinski, Harry W. Trost, George A. Willford
  • Patent number: 11320043
    Abstract: A transmission includes an input shaft coupled to a prime mover, a countershaft, main shaft, and an output shaft, with gears between the countershaft and the main shaft. The shift actuator is mounted on an exterior wall of a housing including the countershaft and the main shaft. A shift control circuit operates a shift actuator using a first opposing pulse command and a first actuating pulse command, and releases pressure with shift actuating and opposing volumes of the shift actuator upon determining a shift completion event.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: May 3, 2022
    Assignee: Eaton Cummins Automated Transmission Technologies, LLC
    Inventors: Paul Peterson, Graeme Andrew Jackson, Timothy Scott Smith, Paul Wilson, Christian Chimner, Thomas Connolly, Christopher Deboer
  • Patent number: 11293501
    Abstract: A powertrain for a vehicle is disclosed that includes an electromagnetic driving unit (10) and a transmission module (20) having a controllable clutch (21) the powertrain further includes a control system to control the electromagnetic driving unit and to control the clutch. The controller has a safety operational mode wherein it controls an engagement of the controllable clutch with a feedback loop in which a desired extent of engagement is positively correlated to a difference between an extent of slip as indicated by the slip indicator and a positive reference value for the extent of slip, wherein the slip indicator indicates the extent of slip with a sign that is the product of the sign of the difference between the rotational speed of the input shaft and a rotational speed of the output shaft and a desired driving torque sign.
    Type: Grant
    Filed: May 27, 2019
    Date of Patent: April 5, 2022
    Assignee: Punch Powertrain PSA E-Transmissions N. V.
    Inventor: Bas Gerard Vroemen
  • Patent number: 11249507
    Abstract: A clutch lever device (50) includes a clutch lever (60) rotatably provided and operated by a user, an elastic deformation portion (81) which is a generation source of an operation reaction force of the clutch lever (60), and a rotary body (91) which is configured to rotate around a first axis (O) in accordance with rotation of the clutch lever (60) and elastically deform the elastic deformation portion (81). The rotary body (91) is configured to change an elastic deformation amount of the elastic deformation portion (81) per unit rotation angle of the clutch lever (60) in accordance with a rotation angle from a pre-operation position of the clutch lever (60).
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: February 15, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Masahiro Shimizu, Yoshinobu Shiomi, Go Morita
  • Patent number: 11230012
    Abstract: A servo calibration method as well as an apparatus and a robot using the same are provided. The method includes: obtaining data of a position sensor on a motor shaft of the servo; obtaining data of a position sensor on an output shaft of the servo; determining whether a clutch protection has been performed on the servo based on data of the position sensor on the motor shaft and data of the position sensor on the output shaft; and calibrating a position of the motor shaft based on the data of the position sensor on the output shaft, if the clutch protection has been performed on the servo. Hence, the problem in the prior art that the process of the calibration is cumbersome can be solved.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: January 25, 2022
    Assignee: UBTECH ROBOTICS CORP LTD
    Inventors: Youjun Xiong, Hanyu Sun, Wenhua Fan, Lifu Zhang, Zhongliang Wang, Jianxin Pang
  • Patent number: 11187162
    Abstract: A method for controlling vehicle speed comprises selecting an engine speed profile for a vehicle. Road grade data is received and processed to determine a road grade for the vehicle. Vehicle speed data is received and processed to determine a vehicle speed for the vehicle. A cylinder deactivation mode for a valvetrain of a multi-cylinder engine of the vehicle is selected. The cylinder deactivation mode comprises deactivating one or more intake valve, exhaust valve, and fuel injection for one or more cylinder of the multi-cylinder engine. The selected cylinder deactivation mode provides a controlled deviation from the selected engine speed profile at the road grade and vehicle speed.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: November 30, 2021
    Assignee: Eaton Intelligent Power Limited
    Inventors: James E. McCarthy, Jr., Mihai Dorobantu, Douglas J. Nielsen, Brian Franke
  • Patent number: 11167762
    Abstract: This vehicle transmission system includes a transmission (21) in which a gear is shifted by an operation of a driver of a vehicle (1), a clutch device (26) that is disposed in a motion transfer path between the transmission (21) and an engine (13) of the vehicle (1), and is disconnected and connected by an action of a clutch actuator (50), and a clutch control unit (61) that is configured to control disconnection and connection of the clutch device (26) by the clutch actuator (50). In a case where the vehicle (1) is started with a gear position of the transmission (21) located at or above a gear that is set in advance, and a vehicle speed (V) is less than or no higher than a set value (v2) that is set in advance, the clutch control unit (61) transitions to clutch capacity-limiting control in which a clutch capacity is reduced below that during normal clutch control.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: November 9, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tatsuya Ryuzaki, Junya Ono
  • Patent number: 11162549
    Abstract: A stuck diagnosis apparatus and a method. The method for diagnosing clutch stuck includes allowing a control unit to turn off a clutch actuator after a clutch is engaged by driving of the clutch actuator, allowing the control unit to count a time elapsing from the turn-off time point of the clutch actuator so as to measure a time taken to reach a disengaged state of the clutch for interrupting engine power, and allowing the control unit to determine that the stuck occurs in the clutch when the clutch does not reach the disengaged state within a preset reference time.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: November 2, 2021
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventor: HyeonDeok Seo
  • Patent number: 11161510
    Abstract: Methods and systems are provided for operating a driveline of a hybrid vehicle that includes an internal combustion engine, an electric machine, an integrated starter/generator, and a transmission are described. In one example, transmission output torque and electric machine torque are adjusted while a brake pedal and accelerator pedal are contemporaneously applied.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: November 2, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Jeffrey Doering, Jason Meyer, Stan L. Bower, Xiaoyong Wang, Yanan Zhao, Walter Joseph Ortmann, Ming Kuang
  • Patent number: 11078971
    Abstract: Disclosed is a clutch control reference value setting method including generating a current-hydraulic pressure model, setting a temporary VKP to a current causing a maximum difference between a model hydraulic pressure and a measured hydraulic pressure, determining that the temporary VKP is valid when a deflection amount calculated from a difference integral value acquired by integrating differences between the model hydraulic pressure and the measured hydraulic pressure while increasing the current is greater than a first reference value under a condition that the first target pressure is applied to the clutch, determining that the temporary VKP is appropriate when a deflection amount calculated from a difference integral value acquired by integrating differences between the model hydraulic pressure and the measured hydraulic pressure while increasing the current is proper under a condition that a second target pressure is applied to the clutch.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: August 3, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Young Ho Ko, Tae Hee Cho, Ho Young Lee
  • Patent number: 11077751
    Abstract: A weight ratio of each driving wheel of the vehicle at the time of automatic driving is calculated, a front and rear distribution ratio of a driving force of the vehicle is calculated from the weight ratio, a rear wheel plan driving force is calculated from the front and rear distribution ratio and an action plan required driving force, and a temperature of a rear wheel motor is estimated. Then, when the estimated attainment temperature of the rear wheel motor is higher than the upper limit value of the temperature, the front and rear distribution ratio is changed within a range in which excessive slip does not occur at the front wheels, the rear wheel plan driving force is recalculated, and the automatic driving of the vehicle is implemented taking the rear wheel plan driving force as a target driving force.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: August 3, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Masayuki Sadakiyo, Akiko Nakagawara, Takuro Shimizu
  • Patent number: 11078970
    Abstract: A vehicle transmission includes a plurality of friction clutches and a selectable one-way clutch. The transmission also includes a controller programmed to, in response to detecting a component fault, switch the selectable one-way clutch from a passive state to an active state by commanding engagement of a first subset of the friction clutches to establish a slip elimination state. The controller is also programmed to, following establishment of the slip elimination state, command the selectable one-way clutch to the active state.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: August 3, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Dongdong Dee Li, Stephen Michael Cicala, Conor Edward Sullivan, Richard Reynolds Hathaway
  • Patent number: 10913465
    Abstract: A speed changing device includes a control unit (60) that: has a manual mode in which a clutch is engaged and disengaged by operating a clutch lever (4b) and an automatic mode in which the clutch is engaged and disengaged without the clutch lever (4b) being operated and is able to change a setting to the manual mode and the automatic mode; and is configured to signal mode misrecognition when it is determined that mode misrecognition has occurred.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: February 9, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tatsuya Ryuzaki, Junya Ono, Seiji Hamaoka
  • Patent number: 10876582
    Abstract: Presented are clutch-type engine disconnect devices, methods for making/using such disconnect devices, and motor vehicles equipped with such disconnect devices. An engine disconnect device includes a notch plate, which has multiple notches and attaches to a torque converter, and a pocket plate, which has multiple pockets and attaches to an engine's crankshaft. A pawl is movably mounted within each notch; these pawls selectively engage the notches with the pockets. A notch plate insert is nested within each notch, supporting thereon one of the pawls. A selector plate interposed between the pocket and notch plates moves from a first position, to shift the pawls out of engagement with the pockets, and a second position, to move the notch plate inserts within the notches and allow the pawls to engage the notches with the pockets to thereby lock the notch plate to the pocket plate to rotate in unison with each other.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: December 29, 2020
    Assignee: GM Global Technology Operations LLC
    Inventors: Derek F. Lahr, Chunhao J. Lee, Farzad Samie, Dongxu Li, Dmitriy Bruder
  • Patent number: 10870423
    Abstract: A vehicle includes an engine, a pair of front axle shafts, and a transfer case having a clutch assembly configured to selectively move between a closed position to enable the engine to drive the front axle shafts, and an open position to disable the engine from driving the front axle shafts. A control system is configured to momentarily open the clutch assembly when the vehicle is coming to a stop or is stopped in order to relieve residual torque build-up in the front axle shafts to thereby reduce idle vibration transmission between the engine and a body of the vehicle.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: December 22, 2020
    Assignee: FCA US LLC
    Inventors: Jeffrey M Orzechowski, Kenneth Pachucki, Urmit Patel, Robert R Roco, Gregory A Sbroglia, Donald F Schmanski, Swapneel H Gharpure
  • Patent number: 10807601
    Abstract: A shift control method for a hybrid vehicle having a dual clutch transmission may include an undershoot determination step of determining, by a controller, whether the amount of undershoot occurring during an inertia phase of power-off upshift is equal to or greater than a prescribed reference amount, a response-starting step of starting, by the controller, when the amount of undershoot is equal to or greater than the prescribed reference amount, coordinated engine torque control using a first coordinated torque, which is determined as the larger one of engine model torque determined from a model and engine map torque obtained from a map in a response to clutch slippage, and a response-maintaining step of determining, by the controller, second coordinated torque to control the engine and controlling engine torque until the inertia phase is completed.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: October 20, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Sung Hyun Cho
  • Patent number: 10801562
    Abstract: A clutch control method may include generating a current-hydraulic pressure model by obtaining an increasing slope of a measured hydraulic pressure which is applied to a clutch in accordance with an increase of a primary ramp current while applying the primary ramp current to a solenoid valve that controls hydraulic pressure to be supplied to the clutch; obtaining a difference between a virtual hydraulic pressure according to the current-hydraulic pressure model and a measured hydraulic pressure applied to the clutch for a secondary ramp current while applying the secondary ramp current to the solenoid valve after removing the primary ramp current; performing updating by learning a secondary ramp current, at which the difference between the virtual hydraulic pressure and the measured hydraulic pressure is maximum, as a Volumetric Kiss Point (VKP); and controlling the clutch on the basis of the learned VKP.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: October 13, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Young Ho Ko, Ho Young Lee
  • Patent number: 10746236
    Abstract: There is provided a clutch control device which includes an electric oil pump, a clutch unit, and a pressure measurement unit, and which controls an operation of the electric oil pump so as to change a transmission state of the clutch unit. The device includes a pressure control valve that is located between an oil passage for connecting the electric oil pump and the clutch unit to each other and an oil pan for storing an unpressurized hydraulic oil, and that discharges the pressurized hydraulic oil from the oil passage to the oil pan, when pressure of the hydraulic oil exceeds valve opening pressure, and a pump drive control unit that controls hydraulic pressure by driving the electric oil pump, based on target pressure indicated by a change command of the transmission state of the clutch unit and the hydraulic pressure measured by the pressure measurement unit.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: August 18, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Takamitsu Eto, Fumiya Sagara
  • Patent number: 10723355
    Abstract: A vehicle start control method includes: a condition determination step of determining, by a controller, whether or not it is necessary to control an engine torque in addition to a slip control of a clutch when a vehicle has started moving; and an engine control step of controlling, by the controller, the engine torque according to an engine error revolutions per minute (RPM) which is a difference between a target engine RPM and an actually measured engine RPM, when it is necessary to control the engine torque in addition to the slip control of the clutch.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: July 28, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jin Sung Kim, Hwan Hur, Sung Hyun Cho
  • Patent number: 10550937
    Abstract: In gear-shift control apparatus and method for a vehicular transmission, a variator which is interposed between an engine and driving wheels and which is capable of modifying a gear (speed) ratio continuously; a sub transmission which is installed in series with the variator and which is capable of switching a plurality of gear-shift stages through a replacement of engagement elements; and a transmission controller which performs a gear ratio control for the variator and a gear-shift stage control for the sub transmission are installed. During a deceleration through a second speed stage of the sub transmission, when the variator is a state in which the variator is at a lowest gear (speed) ratio, a down-shift in which the sub transmission is forced to perform the gear-shift from a second speed stage to a first speed stage, with the variator maintained at the lowest gear (speed) ratio.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: February 4, 2020
    Assignee: JATCO LTD
    Inventors: Kousuke Waku, Incheol Na, Mamiko Inoue
  • Patent number: 10550900
    Abstract: In a dutch engagement control system for engagement and disengagement of transmission of a rotational force between a mainshaft and a countershaft, when clutch engagement control is executed based on the determination that rotational speeds of both the shafts agree with each other, even if unexpected variations in countershaft rotational speed result from torsion occurring downstream of the countershaft in a drive system and/or the like, smooth engagement control is implemented. A control value of countershaft rotational speed at each time is updated and managed. If a threshold value is exceeded by a difference between a countershaft rotational speed actual measured value and the preceding control value, the threshold value is added to the preceding value to obtain the control value. If the threshold value does not exceed the difference, the actual measured value at this time is set as a control value without any change.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: February 4, 2020
    Assignee: HONDA MOTOR CO. LTD.
    Inventors: Junya Ono, Tatsuya Ryuzaki
  • Patent number: 10415697
    Abstract: A method and system of determining the instant gradient of a road, taking into account positive and negative drive torque, may be used to select one of a plurality of shift maps for a vehicle automatic transmission. The invention takes into account vehicle retardation due to braking, and permits consistent adoption of a shift map appropriate to the instant gradient.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: September 17, 2019
    Assignee: JAGUAR LAND ROVER LIMITED
    Inventor: Rob Jerger
  • Patent number: 10384666
    Abstract: Disclosed herein is a technique for improving drivability of a vehicle by controlling the driving of the vehicle by a double clutch when the clutch of a double clutch transmission (DCT) is overheated. There is provided a shift control method for a hybrid vehicle with a DCT. In particular, where it is desired to perform shifting when one of clutches of the DCT is overheated, double-clutch shifting is performed using a non-overheated clutch and an engine clutch without using the overheated clutch, thereby reducing disharmonic shifting in virtue of a small difference in gear ratio during shifting and improving shifting and driving performance.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: August 20, 2019
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Young Min Yoon
  • Patent number: 10336339
    Abstract: A system and method for controlling a powertrain, comprising an internal combustion engine connected to a double clutch transmission having a first and a second partial transmission with at least one shiftable transmission stage. A first friction clutch is arranged between the internal combustion engine and the first partial transmission, and a second friction clutch is arranged between the internal combustion engine and the second partial transmission. An engine torque of the internal combustion engine is transmitted by the first and second friction clutches to the first or second partial transmissions to provide a drivetrain torque at the output of the double clutch transmission. The powertrain is monitored for an occurrence of juddering oscillations, wherein in response to juddering oscillations being detected a regeneration process of one of the first and second friction clutches is triggered, and a friction lining is removed in the regeneration process.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: July 2, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Georg Göppert
  • Patent number: 10288170
    Abstract: A method for automatic calibration of a position detection sensor of an automatic transmission including a gearshift actuator, the method including registering, using the position detection sensor, the position of the gearshift actuator upon power-up of the transmission; and performing a calibration of the position detection sensor if the registered position of the gearshift actuator is outside a predetermined expected position range of the gearshift actuator or within a predetermined abnormal position range of the gearshift actuator.
    Type: Grant
    Filed: August 14, 2013
    Date of Patent: May 14, 2019
    Assignee: Volvo Truck Corporation
    Inventors: Lars Karlsson, Johan Bjernetun
  • Patent number: 10260573
    Abstract: The invention relates to a method for adjusting a friction coefficient of an automated clutch, wherein a current friction coefficient (RK) is determined by a comparison with a moment of the internal combustion engine during a slipping phase of the clutch. In a method, in which the adaptation over the entire operation of the motor vehicle is possible, the current friction coefficient (RK) is pilot-controlled to a long-term friction coefficient (RL) in a non-slipping phase of the clutch and/or in the event of a torque signal that cannot be monitored.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: April 16, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Georg Goppert
  • Patent number: 10197114
    Abstract: A hybrid drive including a first drive motor coupled by a clutch to a shaft, and a second drive motor coupled rigidly to the shaft. A method for determining the temperature of the clutch in the hybrid drive includes the steps of: determining a temperature of the clutch; determining a temperature of the clutch housing; determining the temperature difference between the clutch and the clutch housing; determining the heat conductivity between the clutch and the clutch housing, wherein the heat conductivity is determined as a function of the rotational speed of the first drive motor and the rotational speed of the second drive motor; determining the heat flow between the clutch and the clutch housing on the basis of the product of the heat conductivity and the temperature difference; and adjusting the ascertained clutch temperature on the basis of the ascertained heat flow.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: February 5, 2019
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Denis Loktev, Arnim-Sebastian Rottach, Martin Vornehm
  • Patent number: 10155519
    Abstract: A method for controlling a shift of a vehicle during a coasting driving is provided. The method includes performing a neutral control by releasing a clutch when an operation condition of the neutral control is satisfied during the coasting driving. Driving information regarding the vehicle is collected and a gradient of a forward road is detected using the driving information. A stop condition of the neutral control is determined using the gradient of the forward road, and a shift stage is determined when the neutral control is stopped.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: December 18, 2018
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Byeong Wook Jeon
  • Patent number: 10140787
    Abstract: A method for determining whether an error is present or not in a motor vehicle, a discrete state, in which the motor vehicle is presently in, being ascertained with the aid of a state machine, a decision being made, depending on the ascertained discrete state, whether an error is present or not, whereby the states of the state machine include acceptable states and unacceptable states, then, if the ascertained discrete state is an unacceptable state, the motor vehicle is transferred into an acceptable state.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: November 27, 2018
    Assignee: ROBERT BOSCH GMBH
    Inventors: Isidro Corral Patino, Evgeniya Ballmann, Bernd Mueller, Andreas Grimm
  • Patent number: 10125827
    Abstract: A method of controlling a clutch for vehicle may include determining, by a controller, raised offset engine torque, when engine torque is raised to a reference torque or more in an engine idle state, and controlling, by the controller, the clutch based on the determined offset engine torque.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: November 13, 2018
    Assignee: Hyundai Motor Company
    Inventors: Sung Hyun Cho, Hwan Hur, Jin Sung Kim
  • Patent number: 10099685
    Abstract: A transmission control method that improves fuel economy when gear shift and engine clutch release are to be simultaneously performed is provided. A parallel type hybrid electric vehicle having an engine clutch mounted between an electric motor and an engine includes a first controller that executes transmission gear shift during a first control period and a second controller that operates the engine clutch and generates an engine clutch release request. A third controller permits the engine clutch release request to release the engine clutch before the second control period upon determining that a time when the release request has been generated is within a third control period, which is a period before a second control period in which actual shift is generated within the first control period, and a remaining time until a time when the second control period is started is equal to or greater than a critical time.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: October 16, 2018
    Assignee: Hyundai Motor Company
    Inventor: Sang Joon Kim
  • Patent number: 10052948
    Abstract: Embodiments of the present invention provide a motor vehicle controller comprising a computing device, the controller being configured to command a first releasable torque transmitting device of a drive-line to switch between a released condition in which a first releasable torque transmitting device substantially prevents transmission of torque from an input to an output portion thereof, and an engaged condition in which a releasable torque transmitting device allows torque transmission from an input portion to an output portion thereof. The controller may be configured to receive information indicative of: a speed of wheels of a first axle; a speed of wheels of a second axle; and a terrain over which a vehicle is driving.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: August 21, 2018
    Assignee: JAGUAR LAND ROVER LIMITED
    Inventors: Karl Richards, Simon Owen
  • Patent number: 9890822
    Abstract: A method and an apparatus for controlling a clutch of a vehicle include determining whether a vehicle is moving under a condition in which a gearshift is coupled to the clutch. A clutch torque is learned in which the clutch is maintained in a micro-slip state by decreasing a target clutch torque for a corresponding gear level when it is determined that the vehicle is moving under the condition in which the gearshift is coupled to the clutch. Learning reliability is calculated by reflecting a difference between an engine torque and clutch torque. The clutch is maintained in the micro-slip state for the clutch torque learning or converting the clutch into a lock-up state, depending on a learning reliability level.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: February 13, 2018
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventor: Ho Young Lee
  • Patent number: 9878720
    Abstract: Disclosed is a system for regulation of torque demanded from a prime mover of a vehicle, which prime mover responds to the torque demanded by delivering a dynamic torque. This dynamic torque is related by a gear ratio to a dynamic wheel torque which a power train comprising the prime mover imparts to at least one tractive wheel of the vehicle. The system regulates the torque demanded in such a way that a difference between the torque demanded and the dynamic torque is actively limited by employing feedback of the dynamic torque at an earlier time. The torque demanded at a time (t) for the regulation is limited to a maximum value which exceeds the dynamic torque at an earlier time by an offset value. The torque demanded is continuously varied according to the dynamic torque, so that power train oscillations in the vehicle are reduced in number and/or magnitude.
    Type: Grant
    Filed: March 2, 2014
    Date of Patent: January 30, 2018
    Assignee: SCANIA CV AB
    Inventors: Johan Tunhag, Niclas Lerede, Martin Evaldsson
  • Patent number: 9873484
    Abstract: A saddle-type vehicle can be configured to perform idle-stop during deceleration corresponding to a driver's demand. In some embodiments, the vehicle comprises a bar handle mounted on its opposite tip ends with a grasping grip grasped by the driver and a throttle grip for accelerator operation; two operation controls for performing braking operation, at least one of which being a first brake and a second brake mounted on tip ends of the bar handle; and an engine controller for automatically stopping an engine and making the engine an idle-stop state. In some cases, the saddle-type vehicle further comprises a judgment controller for judging whether a simultaneous operation of the first and second brakes has been achieved; and the engine controller performs the idle-stop during deceleration of the vehicle when the judgment controller judges that the simultaneous operation of the first and second brakes has been performed.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: January 23, 2018
    Assignee: KABUSHIKI KAISHA F.C.C.
    Inventors: Tatsuyuki Ohashi, Kazuyoshi Miyachi, Shouji Makita, Ryouhei Chiba, Kaoru Iida, Makoto Sato
  • Patent number: 9789867
    Abstract: The present disclosure provides a method for learning a kisspoint of an engine clutch in a hybrid vehicle, which performs kisspoint learning of an engine clutch while driving by learning hydraulic pressure at the time when motor torque varies by gradually increasing clutch hydraulic pressure in an open state of the engine clutch when a driving load of a vehicle is constant to increase a kisspoint learning frequency of the engine clutch and improve kisspoint accuracy.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: October 17, 2017
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Sung Deok Kim, Sang Joon Kim
  • Patent number: 9695887
    Abstract: Disclosed are dry clutch control method and apparatus for a vehicle. The method may include a reference speed generating step of generating a virtual target input shaft speed from a wheel speed, a vibration recognizing step of detecting a vibration component based on a difference between an actually measured input shaft speed and the virtual target input shaft speed, and a control input step of additionally applying an anti judder control input to a clutch control torque controlling a dry clutch connected to an input shaft. The anti judder control input may be applied to the vibration component recognized in the vibration recognizing step in a form of being continuously damped starting from an impulsive control input.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: July 4, 2017
    Assignees: Hyundai Motor Company, Kia Motors Corp.
    Inventor: Jin Sung Kim
  • Patent number: 9694821
    Abstract: An upper limit value of an upward gradient of a road surface for starting neutral coasting is set to be larger than an upper limit of the upward gradient of the road surface for starting free-run coasting, so, when the upward gradient is relatively large and a coasting distance is short, the vehicle is caused to travel in the neutral coasting, and stop and restart of the engine are not carried out. Therefore, a decrease in drivability of the vehicle is suppressed. When the upward gradient is relatively small and the coasting distance is long, the vehicle is caused to travel in the free-run coasting, and supply of fuel to the engine is stopped, so fuel economy of the vehicle is obtained. Thus, it is possible to achieve both fuel economy and drivability of the vehicle during coasting on an upward gradient.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: July 4, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takeaki Suzuki, Masaki Matsunaga, Yasunari Kido, Takayuki Kogure, Yukari Okamura, Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Akihiro Sato, Yusuke Kinoshita
  • Patent number: 9663109
    Abstract: A vehicle clutch control method includes an incline detecting step of detecting an incline of a road surface when the vehicle is in a creep hold state, a first determining step of determining whether the detected incline is greater than a first set value, and a first control step of opening the clutch and operating an electronic stability program (ESP) brake when the incline is greater than the first set value.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: May 30, 2017
    Assignee: HYUNDAI MOTOR COMPANY
    Inventor: Young Min Yoon
  • Patent number: 9651140
    Abstract: An arrangement for estimating the input torque of a dual-clutch transmission for a vehicle is provided. The transmission includes an inner input shaft and an outer input shaft arranged concentrically with respect to the inner input shaft. The arrangement further includes a dual-clutch assembly connecting the shafts to an output shaft of an engine. A torque sensor is arranged on the outer input shaft and connected to a transmission control unit. By torque sensor, a measured torque value is provided during operation of the outer input shaft and for providing an estimated torque value during operation of the inner input shaft.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: May 16, 2017
    Assignee: Volvo Lastvagnar AB
    Inventors: Mattias Åsbogård, Krister Fredriksson
  • Patent number: 9644724
    Abstract: A transmission includes an input shaft, an output shaft, at least five planetary gearsets, a variable-ratio unit, and at least five clutches. The at least five clutches are selectively engageable in combination with one another to select one of a plurality of operating modes including at least one reverse mode, at least five forward modes, and at least five transition modes. One of the at least five transition modes is configured to transition the transmission from the at least one reverse mode to one of the at least five forward modes. Another one of the at least five transition modes is configured to transition the transmission from the one of the at least five forward modes to another of the at least five forward modes. Each of the at least five transition modes includes a fixed speed ratio defined between the input shaft and the output shaft.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: May 9, 2017
    Assignee: Allison Transmission, Inc.
    Inventor: Brian Schoolcraft
  • Patent number: 9637131
    Abstract: A clutch control system includes a hunting determining unit that determines whether or not a hunting condition, under which hunting occurs in an engine rotational speed of an engine, is met, and a clutch position control unit. The clutch position control unit executes a first clutch position control, which is in accordance with engine rotation information, on the clutch if the hunting determining unit determines that the hunting condition is not met, and executes a second clutch position control, which is lower in response to the engine rotation information than the first clutch position control, on the clutch if the hunting determining unit determines that the hunting condition is met.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: May 2, 2017
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventor: Shinobu Oohata
  • Patent number: 9545926
    Abstract: A system and method for use with a vehicle to provide a vehicle launch assist (VLA) function that reduces wheel slip at lower speeds and to provide a fraction control (TC) function that reduces wheel slip at higher speeds. Each function affects operation of one or more vehicle subsystems that control at least one powertrain parameter. The VLA and TC functions operate in response to a driver accelerator request to generate a drive signal that controls torque delivered to at least one driven vehicle wheel. The VLA function generates the drive signal at a first value that limits the torque to below a requested torque value representing the driver accelerator request. The TC function generates the drive signal at a second value that limits the torque to below the requested torque value. And the control system outputs a powertrain drive signal based on the lesser of first and second values.
    Type: Grant
    Filed: September 7, 2014
    Date of Patent: January 17, 2017
    Assignee: Jaguar Land Rover Limited
    Inventors: Paul Darnell, Robert Bird
  • Patent number: 9533591
    Abstract: Contact charging is performed using a charging inlet and a charger, and non-contact charging is performed using a power transmission unit and a power reception unit. An ECU controls charging power by the contact charging and charging power by the non-contact charging such that the sum of the charging power by the contact charging and the charging power by the non-contact charging does not exceed a predetermined limitation. When the sum of electric power receivable by the contact charging and electric power receivable by the non-contact charging exceeds the predetermined limitation, the ECU controls the charging power by the contact charging and the charging power by the non-contact charging to limit one of the contact charging and the non-contact charging which is less efficient.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: January 3, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Shinji Ichikawa
  • Patent number: 9415761
    Abstract: Systems and methods for improving gear shifting of a step-ratio automatic transmission in a hybrid vehicle are presented. The systems and methods may provide for adjusting torque capacity of one or more driveline clutches to reduce driveline torque disturbances that may be related to driveline inertia torque during transmission gear shifting.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: August 16, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Alexander O'Connor Gibson, John Edward Brevick, Seunghoon Lee, Matthew John Shelton, Felix Nedorezov
  • Patent number: 9382859
    Abstract: A motor vehicle to which a control device is applied includes an idling stop control section for stopping operation of an engine when a predetermined stopping condition is fulfilled while the engine is idling, and a neutral-at-idle control section for shifting a transmission of the vehicle into neutral when a predetermined shift-into-neutral condition is fulfilled. While a post-stoppage elapsed time measured by a timer is shorter than or equal to a predetermined time after the vehicle stops moving, operation of the engine is stopped by the idling stop control section if the predetermined stopping condition is fulfilled but shifting of the transmission into neutral by the neutral-at-idle control section is prohibited even if the shift-into-neutral condition is fulfilled.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: July 5, 2016
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Hiroshi Funakoshi, Hiroyuki Suzuki, Katsuyoshi Noda
  • Patent number: 9358982
    Abstract: A method for processing data recorded during a data acquisition, the data defining a correspondence between values representing torque transmitted by a clutch and values representing a position of a clutch control member. The processing method includes modifying the recorded data to define a modified correspondence between the values representing the torque transmitted by the clutch and the values representing the position of the clutch control member, the modified correspondence to be used in a hill start assist device of a motor vehicle including a power train connected to drive wheels by a transmission system including the clutch and a braking system, whereby the release of the braking system is automatically controlled by the assist device.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: June 7, 2016
    Assignee: RENAULT S.A.S.
    Inventors: Christophe Desfriches, Alessandro Monti, Richard Pothin
  • Patent number: 9296295
    Abstract: An electronic traction optimization system includes a control unit adapted to produce a corner speed estimate signal for each wheel of a machine, produce an ideal target speed signal for each wheel having a value at least partially responsive to the corner speed estimate signals, produces a practical target speed signal for each wheel, generates an actual target speed signal having a value responsive to a comparison of the ideal target speed signal and the practical target speed signal for each wheel. The control unit compares each actual target speed signal to an associated wheel speed signal to obtain a wheel speed error signal for each wheel and converts each wheel speed error signal to a clutch control signal, wherein each differential clutch actuator is responsive to an associated clutch control signal.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: March 29, 2016
    Assignee: Caterpillar Inc.
    Inventors: Gerry O. McCann, Yun Liu, Keith F. Harvey
  • Patent number: 9243706
    Abstract: A method for controlling a manual transmission includes using a controller to determine a desired torque transmitted through an input clutch and a desired clutch slip for the desired gear after a shift lever is moved to a desired gear position and while a clutch pedal is being released for engaging the clutch; measuring torque in the vehicle drive assembly; using measured torque to determine actual clutch torque transmitted through the clutch; and reducing torque error using the controller to adjust a clutch actuator such that a difference between the desired torque and the actual torque is reduced. Slip error may also be reduced by adjusting the clutch actuator to reduce the difference between the desired slip and measured slip.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: January 26, 2016
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Yuji Fujii, Alex O'Connor Gibson, Gregory M. Pietron, Nimrod Kapas, Joseph F. Kucharski