Control Of Transmission Torque Patents (Class 701/87)
  • Patent number: 9956952
    Abstract: A method is provided to control a hybrid powertrain that comprises: a combustion engine; a gearbox with input and output shafts; a first planetary gear connected to the input shaft and a first main shaft; a second planetary gear, connected to the first planetary gear and a second main shaft; first and second electrical machines, respectively connected to the first and second planetary gears; one gear pair connected with the first planetary gear and output shaft; and one gear pair connected with the second planetary gear and output shaft. The method comprises: disconnecting a first planetary wheel carrier and a first sun wheel or disconnecting a second planetary wheel carrier and a second sun wheel from each other; b) controlling the combustion engine to a predetermined engine speed; and c) controlling the first and second electrical machines so that a desired torque is achieved in the output shaft, while a requested total power consumption of the first and the second electrical machines is achieved.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: May 1, 2018
    Assignee: Scania CV AB
    Inventors: Mathias Björkman, Niklas Pettersson, Johan Lindström, Mikael Bergquist
  • Patent number: 9050950
    Abstract: A method for controlling braking of a vehicle includes the steps of calculating a first pressure based on a driver request, and providing pressure that does not exceed a predetermined pressure threshold if the vehicle is stationary and the first pressure is less than the predetermined pressure threshold.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: June 9, 2015
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Patrick J. Monsere, Danny Y. Mui, Kevin S. Kidston
  • Patent number: 9043113
    Abstract: A drive system for a mobile machine is disclosed. The drive system may have a travel speed sensor, at least one traction device speed sensor, and a controller in communication with the travel speed sensor and the at least one traction device speed sensor. The controller may be configured to determine a slip value associated with a traction device of the mobile machine based on signals generated by the travel speed sensor and the at least one traction device speed sensor, and determine a torque output value of the mobile machine. The control may also be configured to make a comparison of the slip value and the torque output value with a pull-slip curve stored in memory, and selectively update the pull-slip curve based on the comparison.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: May 26, 2015
    Assignee: Caterpillar Inc.
    Inventors: Christopher A. Padilla, Steven R. Krause, Ted E. Kingham, Kendall W. Stevens
  • Patent number: 9037326
    Abstract: A method for disconnecting an electrical machine connected with the wheels of a vehicle's drive axle by means of a dog clutch having intermeshing couplers includes, upon receipt of a command to disengage, two successively activated steps. In the first step, a torque equal to a calibrated threshold of a target torque (d) is applied to the electrical machine so to effect a zero torque between the couplers. During this step, a dog clutch actuator is deactivated so to allow the dog clutch to disengage from the electrical machine as quickly as possible. Next, a torque having a value determined according to a slope whose value ranges from the calibrated threshold of the target torque (d) to zero is applied to the electrical machine.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: May 19, 2015
    Assignee: Peugeot Citroen Automobiles SA
    Inventors: Eric Schaeffer, Florian Galinaud
  • Publication number: 20150134221
    Abstract: A control method of a tracked vehicle having a track belt and configured to advance the tracked vehicle provides for acquiring the driving speed of the tracked vehicle; acquiring the speeds of the tracks with respect to the tracked vehicle; calculating a range of expected values of traveling speed as a function of speed of the track; and varying the speed of the track when the traveling speed of the tracked vehicle is outside the range of expected values.
    Type: Application
    Filed: May 28, 2013
    Publication date: May 14, 2015
    Inventor: Martin Pelletier
  • Patent number: 9002556
    Abstract: A torque response control apparatus for an electric motor of a vehicle comprises a motor torque response control means that is configured to carry out finding a difference between a required acceleration that is variable in accordance with a change of a vehicle driving condition and an actual acceleration that is obtained, at the time of the change of the vehicle driving condition, with the aid of a torque characteristic of the electric motor, the difference being caused by the torque characteristic of the electric motor in which the maximum torque is varied in accordance with a rotation speed of the electric motor; and controlling the torque response of the electric motor in a manner to cause a driver to feel the difference of the actual acceleration from the required acceleration to be small by compensating the difference between the required acceleration and the actual acceleration.
    Type: Grant
    Filed: April 14, 2011
    Date of Patent: April 7, 2015
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yohei Nakamura, Isamu Kazama
  • Patent number: 9002600
    Abstract: An example method of operation comprises, selectively shutting down engine operation responsive to operating conditions and without receiving an engine shutdown request from the operator, maintaining the automatic transmission in gear during the shutdown, and during an engine restart from the shutdown condition, and with the transmission in gear, transmitting reduced torque to the transmission. For example, slippage of a forward clutch of the transmission may be used to enable the transmission to remain in gear, yet reduce torque transmitted to the vehicle wheels.
    Type: Grant
    Filed: January 2, 2009
    Date of Patent: April 7, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Alex O'Connor Gibson, Peter John Grutter, Roger Lyle Huffmaster, Felix Nedorezov
  • Patent number: 8989930
    Abstract: A powertrain system includes an internal combustion engine configured to transfer torque via a clutch to an input member of a hybrid transmission having torque machines configured to transfer torque thereto. Operation of the engine is controlled to facilitate a change in activation of a clutch between the engine and the input member of the hybrid transmission.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: March 24, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Jy-Jen F. Sah, Anthony H. Heap, Lawrence A. Kaminsky
  • Patent number: 8935062
    Abstract: A vehicle transmission device includes an input member coupled to a combustion engine and a rotary electric machine; an output member coupled to wheels; a speed change mechanism with a plurality of friction engagement elements and that provides a plurality of shift speeds; and a control device that controls the speed change mechanism. When a during-regeneration downshift is performed while the rotary electric machine is outputting regenerative torque, the control device sets a target increase capacity, which is a target value of a transfer torque capacity of an engagement-side element to be engaged after an increase, increases the transfer torque capacity of the engagement-side element to the target increase capacity over a predetermined torque capacity increase period, and decreases a transfer torque capacity of a disengagement-side element, which is to be disengaged, over a predetermined torque capacity decrease period that at least partially overlaps the torque capacity increase period.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: January 13, 2015
    Assignee: Aisin AW Co., Ltd.
    Inventors: Nobuaki Inagaki, Hiroya Ueno, Shigekazu Hase, Nobuhiro Iwai, Hiroshi Tsutsui
  • Patent number: 8918257
    Abstract: In a linear solenoid 107n, an electromagnetic coil 71n, a pressure sensor 72n, and label resistors 73n and 74n for correcting an inherent variation in a pressure detection characteristic are integrated; the standard characteristic of the pressure sensor 72n is stored in a control module 120M; when driving is started, the resistance values of the label resistors 73n and 74n are read, the pressure detection characteristic of the utilized pressure sensor 72n is corrected, and an excitation current for the electromagnetic coil 71n is controlled in such a way that a target adjusted hydraulic pressure is obtained. Even when due to a change in the oil temperature, the valve opening characteristic of the linear solenoid 107n changes, the adjusted hydraulic pressure is controlled to be constant.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: December 23, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shozo Kanzaki, Fumiaki Arimai, Hiroyoshi Nishizaki
  • Patent number: 8914208
    Abstract: When the vehicle decelerates on the ascending slope, a required brake axle torque is calculated in accordance with vehicle deceleration, so that the swinging back is suppressed. At start timing after that, initial and final values of the required brake axle torque and a correction duration are determined. During the correction duration from the start timing, the required brake axle torque is decreased from the initial value to the final value. Then, based on change in a detected vehicular speed at or before a time which is a last moment of a period in which the detected vehicular speed detected based on detection signals of the wheel speed sensors are equal to or larger than a minimum detectable vehicular speed, a stop time at which an actual vehicle speed becomes zero is estimated, a period from the start time to the stop time is identified as the correction duration.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: December 16, 2014
    Assignees: Advics Co., Ltd., Denso Corporation
    Inventors: Masaki Maruyama, Masayoshi Takeda, Koji Fujiki, Daisuke Tokumochi
  • Patent number: 8909437
    Abstract: A payload control system includes a sensor system and a force sensor system. A controller determines a calibration machine state, a calibration linkage force, and machine calibration parameters based at least in part upon the calibration machine state and the calibration linkage force. The controller also determines a loaded implement machine state, a loaded implement linkage force, and a mass of the payload based at least in part upon the machine calibration parameters, the loaded implement machine state, and the loaded implement linkage force.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: December 9, 2014
    Assignee: Caterpillar Inc.
    Inventors: Yongliang Zhu, Joseph Faivre, Drew A. Fehr
  • Patent number: 8903583
    Abstract: The occurrence of shock and the occurrence of the feeling of losing speed can be prevented. When the clutch is engaged from the state in which the clutch is disengaged and a vehicle is being driven by only the power of an electric motor, an electric motor control unit controls the electric motor so that the torque of the electric motor is decreased at a rate determined according to the torque requested by the driver. During the period in which the torque of the electric motor is decreased at the above rate, a clutch control unit controls the engagement of the clutch so that the clutch is engaged after being set to a half-engaged clutch state in which part of the power is transmitted. The present invention is applicable to hybrid vehicles.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: December 2, 2014
    Assignee: Hino Motors, Ltd.
    Inventor: Tomohiko Araki
  • Patent number: 8897987
    Abstract: A traction control system in vehicle comprises a detector for detecting a monitored value which changes according to a degree of a drive wheel slip; a condition determiner for determining whether or not the monitored value meets a control start condition and whether or not the monitored value meets a control termination condition; and a controller for executing traction control to reduce a driving power of the drive wheel during a period of time from when the condition determiner determines that the monitored value meets the control start condition until the condition determiner determines that the monitored value meets the control termination condition; the condition determiner being configured to set at least the control start condition variably based on a slip determination factor which changes according to a vehicle state and such that the control start condition changes more greatly according to the vehicle state than the control termination condition.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: November 25, 2014
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventor: Yoshimoto Matsuda
  • Patent number: 8892288
    Abstract: A method for controlling an electric vehicle drivetrain having least two drive units with wheels located on opposite axles are driven by respective drive units, includes in a first operating mode, the ratio of the torques provided by the drive units in each case for a given torque requirement is set taking into account the efficiency applicable to each drive unit under the given operating conditions, and in a second operating mode, the ratio of the torques provided by the drive units in each case for a given torque requirement is set independently of the efficiency applicable to each drive unit under the given operating conditions.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: November 18, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Monika Derflinger, Arnulf Sponheimer, Roger Graaf, Marc Simon
  • Patent number: 8886436
    Abstract: A driving force control apparatus includes: a turning radius estimating unit that estimates a turning radius of a four-wheel-drive vehicle; a target slip angle computing unit that computes a target slip angle at the time of turning of the four-wheel-drive vehicle, on the basis of the estimated turning radius; a target rotational speed computing unit that computes target rotational speeds of right and left rear wheels of the four-wheel-drive vehicle, on the basis of the estimated turning radius, the computed target slip angle, and a vehicle speed; and a driving force control unit that controls driving forces that are transmitted to the right and left rear wheels such that actual rotational speeds of the right and left rear wheels approach the computed target rotational speeds.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: November 11, 2014
    Assignee: JTEKT Corporation
    Inventor: Akira Kodama
  • Patent number: 8880307
    Abstract: A coasting control device for avoiding dangerous modes such as tire lock up upon the end of coasting control. The device, which performs coasting control to disengage the clutch and to reduce the engine revolutions per minute (RPM), also prevents a gearshift operation during coasting control.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: November 4, 2014
    Assignees: Isuzu Motors Limited, Transtron Inc.
    Inventors: Nobuyuki Iwao, Yasushi Yamamoto, Kazuhiko Kobayashi, Hiroyuki Arai, Kouhei Takama
  • Patent number: 8868274
    Abstract: Providing a control apparatus for a vehicular drive system, which is configured to implement a torque reduction control during a shifting action of an automatic transmission, and which permits reduction of the size and cost of an electric circuit including a smoothing capacitor. An electricity-generation-amount-variation restricting region A01 is predetermined such that a point of a vehicle running state lies in the electricity-generation-amount-variation restricting region A01 prior to a moment of determination to perform a shifting action of the automatic transmission, and electricity-generation-amount-variation restricting means 96 implements an electricity-generation-amount-variation restricting control to restrict a rate of increase of a total amount of an electric energy generated by first and second electric motors MG1 and MG2, to a predetermined upper limit value LTGN, when the point of the vehicle running state has moved into the electricity-generation-amount-variation restricting region A01.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: October 21, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuyuki Shiiba, Takeshi Kanayama, Talyo Uejima, Daiki Sato
  • Patent number: 8858281
    Abstract: In an apparatus for controlling operation of an outboard motor having an internal combustion engine to power a propeller, and a transmission being selectively changeable in gear position to establish speeds including a first speed and a second speed and transmitting power of the engine to the propeller with a gear ratio determined by established speed, it is determined whether acceleration is instructed to the engine when the second speed is established and whether a preset condition is met, and operation of the transmission is controlled to change the gear position from the second speed to the first speed when the acceleration is determined to be instructed and the preset condition is met, thereby improving the acceleration performance of immediately after the acceleration is started.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: October 14, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Koji Kuriyagawa, Hajime Yoshimura
  • Patent number: 8851946
    Abstract: In an apparatus for controlling operation of an outboard motor having an internal combustion engine and transmission, it is configured to determine whether acceleration is instructed to the engine by an operator when the gear position is the second speed, detect a slip ratio of a propeller based on theoretical velocity and actual velocity of a boat, control a throttle opening to suppress increase in the slip ratio when the acceleration is determined to be instructed, and change the gear position from the second speed to the first speed when the slip ratio is equal to or less than a first predetermined value and the change amount of the slip ratio is equal to or less than a prescribed value. With this, it becomes possible to appropriately control operation of the engine and the transmission during acceleration, thereby improving the acceleration performance of immediately after acceleration start.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: October 7, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Koji Kuriyagawa, Hajime Yoshimura, Nobuchika Katagiri
  • Patent number: 8825320
    Abstract: A method for controlling a powertrain includes monitoring a desired synchronous transmission shift during deceleration of an output member including a desired operating range state, monitoring an output speed, predicting output deceleration through the desired synchronous transmission shift, determining a penalty cost associated with the desired synchronous transmission shift based upon an input speed profile resulting from the predicted output deceleration and from the desired synchronous transmission shift, and executing the synchronous transmission shift based upon the penalty cost.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: September 2, 2014
    Assignees: GM Global Technology Operations LLC, Daimler AG, Chrysler Group LLC, Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Anthony H. Heap, Lawrence A. Kaminsky, Jy-Jen F. Sah, Kee Yong Kim
  • Patent number: 8825337
    Abstract: A method of operating a drive-train having a drive aggregate comprising an electric machine and internal combustion engine. An automated variable-speed transmission is connected between the engine and a drive output. The electric machine couples, via a friction clutch, a shaft of the transmission. Gearshifts are carried out in the transmission with an interruption of the drive torque provided by the drive aggregate in such manner that first the drive torque, provided at the output, is reduced to zero, then the actual gearshift is carried out, and then the drive torque, at the output, is again built up. To accomplish the gearshift, after disengaging a current gear and before engaging a target gear, the shaft of the transmission, which couples the electric machine via the friction clutch, is synchronized utilizing the inertial mass of the electric machine.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: September 2, 2014
    Assignee: ZF Friedrichshafen AG
    Inventor: Johannes Kaltenbach
  • Patent number: 8818653
    Abstract: A system and method of dithering speed and/or torque for shifting a transmission of a vehicle having an engine, a reversible, variable displacement hydraulic motor/pump which can be driven by the engine, a hydraulic accumulator supplied by said motor/pump, and at least one reversible hydraulic driving motor for propelling the vehicle supplied with fluid by the hydraulic accumulator and/or by said motor/pump operating as a pump. A transmission unit connects the engine with the variable displacement hydraulic motor/pump during a first mode of operation (city mode) and connects the engine to a vehicle drive wheel during a second mode of operation. The system utilizes stored hydraulic energy to dither the output of the driving motor in order to achieve quick and smooth shifts between city and highway mode, or between various ranges within the city mode.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: August 26, 2014
    Assignee: Parker-Hannifin Corporation
    Inventors: Yisheng Zhang, John Loeffler
  • Patent number: 8813885
    Abstract: A method for operating a powertrain system to transfer torque among an engine, torque machines, and a driveline includes identifying a speed/torque search window responsive to a parameter affecting engine power output and the output torque request. A search is executed to determine a preferred engine operating point for operating the powertrain system in response to an output torque request. The search includes determining a candidate power cost associated with operating the powertrain system at the candidate engine torque and candidate engine speed for each of a plurality of candidate engine speeds and candidate engine torques within the speed/torque search window. A preferred engine operating point is determined as the candidate engine speed and the candidate engine torque associated with a minimum of the candidate power costs. Engine operation is controlled responsive to the preferred engine speed.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: August 26, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Anthony H. Heap, Kee Yong Kim
  • Publication number: 20140229049
    Abstract: The invention relates to a method for assisting a driver of a motor vehicle, in particular of an electric vehicle, during a driving process for overcoming an obstacle which is close to the ground and has a slow speed. In this context, the method has the following steps: transmission (S1) of a torque to the wheels which are to be driven in order to overcome the obstacle, detection (S6) that the obstacle has been overcome, and automatic reduction in the torque and/or automatic generation (S7) of a braking torque in order to decelerate the motor vehicle directly after the detection.
    Type: Application
    Filed: June 19, 2012
    Publication date: August 14, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Hans-Georg Horst, Ulrich Gottwick, Juergen Binder, Rodrigo Biurrun Sotelo
  • Patent number: 8798889
    Abstract: A method for an automatic transmission includes measuring torque of a component of the transmission using a torque sensor in communication with the component. The torque of the component is estimated from information other than the measured torque. The measured torque is rejected from being used in a control operation of the transmission if the difference between the measured torque and the estimated torque is greater than a selected threshold.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: August 5, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Yuji Fujii, Bradley Dean Riedle, Gregory Michael Pietron, Joseph F. Kucharski, Diana Yanakiev, Richard Reynolds Hathaway
  • Patent number: 8762005
    Abstract: In control of a vehicle that is provided with a steering torque supply device that supplies a steering torque to a steering device coupled to a steered wheel and a steering transmission ratio variation device that changes a steering transmission ratio, the control includes: setting a target state quantity for keeping the vehicle in a target lane; controlling the steering transmission ratio variation device so that a state quantity of the vehicle becomes the set target state quantity; controlling the steering torque supply device so that a steering reaction restriction torque that restricts a steering reaction torque generated in the steering device is supplied with the steering device as the steering torque when the vehicle is kept within the target lane; and correcting the steering reaction restriction torque on the basis of a steering input when the steering input from a driver of the vehicle is produced.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: June 24, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Theerawat Limpibunterng, Yoshiaki Tsuchiya, Shoji Asai
  • Patent number: 8738246
    Abstract: In an apparatus for controlling a CVT that transmits power of an engine to driven wheels with hydraulic clamping pressure supplied from a hydraulic mechanism to clamp the belt from laterally-sided pulleys, it is determined whether the ABS operation of the ABS mechanism (to reduce braking force to be applied to the driven wheels when the driven wheels are locked) is delayed, and set hydraulic clamping pressure is increased when the ABS operation is determined to be delayed, while the set clamping pressure is maintained as it is when the operation of the ABS mechanism is determined to be not delayed.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: May 27, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuichiro Takemori, Yuzo Okubo, Masatoshi Noguchi
  • Patent number: 8718896
    Abstract: A hybrid vehicle and method of control are disclosed. An internal combustion engine and at least one traction motor are operated such that the combined output torque corresponds to one of a plurality of output torque functions, each output torque function having a distinct output torque at a maximum value of accelerator pedal position for an associated vehicle speed. The output torque function is selected based on a virtual gear number. The virtual gear number varies in response to driver activation of shift selectors or automatically in response to changes in vehicle speed.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: May 6, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Qing Wang, Ming Lang Kuang, Fazal Urrahman Syed, Ryan Abraham McGee, Kenneth Frederick
  • Patent number: 8700247
    Abstract: A hybrid powertrain includes an engine, an electric machine, and a transmission. A method to control the powertrain includes monitoring operation of the powertrain, determining whether conditions necessary for growl to occur excluding motor torque and engine torque are present, and if the conditions are present controlling the powertrain based upon avoiding a powertrain operating region wherein the growl is enabled.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: April 15, 2014
    Assignee: GM Global Technology Operations LLC
    Inventors: Jeremy Wise, Chihang Lin, Anthony H. Heap
  • Patent number: 8688348
    Abstract: In a method for setting a wheel torque in a vehicle, a setpoint value for a slip-adhesion coefficient gradient for one wheel of one vehicle axle is ascertained, and the wheel torque is set in such a way that the actual value of the gradient is approximated to the setpoint value.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: April 1, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Ralph Boeker, Adrian Thomys, Oliver Wagner, Tobias Strauss
  • Patent number: 8666626
    Abstract: A turning control device for a vehicle which generates a yaw moment in the body of a vehicle includes: a steering wheel turning amount detection device which detects a steering wheel turning amount of the vehicle; a vehicle speed detection device which detects a vehicle speed of the vehicle; a feedforward control amount calculation unit which calculates a feedforward control amount based on at least the steering wheel turning amount; a braking force control amount calculation unit which determines a braking force control amount based on the feedforward control amount; a braking control device which controls the braking force based on the braking force control amount; and a steering direction determination device which determines whether a steering direction is an incremental steering direction or a returning-steering direction. The feedforward control amount calculation unit includes a feedforward control amount correction unit which corrects the feedforward control amount.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: March 4, 2014
    Assignee: Honda Motor Co., Ltd.
    Inventors: Tomoyuki Futamura, Takeshi Kojima, Kazutaka Ohmura
  • Patent number: 8649952
    Abstract: A method for controlling a backing vehicle includes if a back-up sensor indicates that an obstacle is present behind the vehicle and a gear selector is moved to a reverse position, delaying reverse gear engagement and producing a warning signal, and producing a transmission tie-up if brakes are applied insufficiently to stop the vehicle.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: February 11, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Felix Nedorezov, Hong Jiang, Steven G. Thomas
  • Patent number: 8645041
    Abstract: A slip control apparatus includes a driving torque calculating means calculating driving torque, a driving torque applying means applying the calculated driving torque to driving wheels, and a slip restraining means restraining slippage at each driving wheel when the slippage occurs at each driving wheel, wherein when the slippage occurs at each driving wheel, the driving torque calculating means calculates demanded torque and adds consumed driving torque, which corresponds to the driving torque consumed for restraining the slippage at each driving wheel by the slip restraining means, to the calculated demanded torque to calculate the driving torque.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: February 4, 2014
    Assignees: Advics Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Yasuhito Ishida, Gen Inoue
  • Patent number: 8606478
    Abstract: A system and a method are provided for controlling a foundation brake of a vehicle having at least one foundation brake device, wherein the usability of the foundation brake is limited to a predetermined total application-time of the foundation brake within a predetermined time interval.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: December 10, 2013
    Assignee: Volvo Lastvagnar AB
    Inventors: Jens Samsioe, Peter Lingman
  • Patent number: 8594864
    Abstract: A torque based power limit cueing system is provided and includes an engine computer to compile data relating to torque and additional information of each of one or more engines, an active stick by which tactile cueing are provided to a pilot and by which the pilot inputs control commands, a multi-function display (MFD) by which visible cues are provided to the pilot and a flight control computer (FCC) operably coupled to the engine computer, the active stick and the multi-function display, the FCC being configured to receive the data from the engine computer and to output tactile cue commands and visible commands in accordance with the torque and the additional information of each of the one or more engines to the active stick and the MFD, respectively.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: November 26, 2013
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Aaron L. Greenfield, Alex Faynberg, Vineet Sahasrabudhe, John Rucci, Glen Knaust
  • Patent number: 8587237
    Abstract: A control device configured with an external input estimator that reduces a vibration component of a rotational speed of the power transfer system at a rotational speed of the rotary electric machine and estimates transfer system input torque on the basis of the rotational speed of the rotary electric machine, and that estimates external input torque by subtracting at least output torque of the rotary electric machine from the transfer system input torque. A low-vibration speed calculator calculates a low-vibration rotational speed on the basis of the external input torque and vehicle required torque. A rotational speed controller calculates feedback command torque that matches the rotational speed of the rotary electric machine with the low-vibration rotational speed. A torque command value calculator calculates an output torque command value on the basis of the vehicle required torque and the feedback command torque.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: November 19, 2013
    Assignee: Aisin AW Co., Ltd.
    Inventors: Yasuhiko Kobayashi, Jin Izawa
  • Patent number: 8577577
    Abstract: A vehicle includes a support member and at least one wheel attached to the support member. The support member is capable of oscillating in a front-back direction of the vehicle. The vehicle further includes a torque control unit applying torque to the wheel, and a control loop controlling the torque control unit to adjust the torque applied to the wheel to allow the vehicle to travel while keeping an inverted state of the support member. The control loop controls the torque control unit to apply normal torque and additional torque to the wheel, the normal torque determined according to a deviation between a target value and a controlled variable including at least one of an inclination angular velocity and an inclination angle of the support member in the front-back direction, the additional torque determined according to a power of a velocity parameter of the vehicle.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: November 5, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Susumu Oikawa, Yusuke Kosaka
  • Patent number: 8554427
    Abstract: In a control apparatus for a continuously variable transmission, when the difference between a target transmission gear ratio calculated immediately after switching the control mode from a manual shift mode to an automatic shift mode and a current transmission gear ratio (that is, a fixed transmission gear ratio of the transmission gear stage selected in the manual shift mode immediately before the switching) is greater than or equal to a set value, a shift control unit sets a temporary target transmission gear ratio between the target transmission gear ratio and the current transmission gear ratio. If a temporary target transmission gear ratio is set, the shift control unit causes the transmission gear ratio obtained during transition of mode from the manual shift mode to the automatic shift mode to match the target transmission gear ratio stepwise via the temporary target transmission gear ratio.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: October 8, 2013
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Shinya Yasunaga, Keisuke Ajimoto, Masayuki Nishida, Hiroki Tanaka, Takahito Morishita
  • Patent number: 8543299
    Abstract: An exemplary control device includes an input torque detection unit that detects an input torque input to the input shaft; and a controller that: determines torque distribution of two of the friction engagement elements that form the shift speeds; and calculates a transmission torque of the two friction engagement elements based on the input torque and the torque distribution and sets the engagement pressure to obtain a torque capacity that can transmit the transmission torque, wherein the controller sets the engagement pressure such that slippage does not occur in the two friction engagement elements in a state where engagement of the two friction engagement elements forms the shift speeds and such that, even if an additional friction engagement element engages based on the line pressure while the two friction engagement elements are engaged, one of the three friction engagement elements is caused to slip.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: September 24, 2013
    Assignee: Aisin AW Co., Ltd.
    Inventors: Tetsuya Shimizu, Masamichi Yamaguchi, Satoshi Nishio, Kenichi Tsuchida, Akitomo Suzuki, Kazunori Ishikawa, Shin-ichirou Murakami
  • Patent number: 8538649
    Abstract: A method and system for managing accumulator effects during engagement of a lockup clutch of a torque converter includes selecting a pump speed profile that reduces a rotational speed of a pump of the torque converter from an initial value to a rotation speed of a turbine of the torque converter. A pump acceleration profile is determined based on the pump speed profile. Engagement of the lockup clutch is controlled as a function of an inertia of an engine associated with the torque converter, a torque applied by the engine to the pump, the rotational speed of the turbine, the pump speed profile, and the pump acceleration profile.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: September 17, 2013
    Assignee: Allison Transmission, Inc.
    Inventor: Jeffrey K. Runde
  • Patent number: 8538651
    Abstract: A driving force control apparatus includes a driver model which is a functional block adjusting characteristics relevant to human senses and a powertrain manger which is a functional block adjusting vehicle's hardware characteristics. The driver model includes a target base driving force calculation unit (static characteristics) calculating a target driving force from an accelerator pedal position using a base driving force map or the like, and a target transient characteristics addition unit calculating a final target driving force from the target driving force using transient characteristics represented by a transfer function. The powertrain manager includes a target engine torque and AT gear calculation unit and a characteristics compensator compensating for response of the vehicle.
    Type: Grant
    Filed: April 11, 2006
    Date of Patent: September 17, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Norimi Asahara, Katsumi Kono
  • Patent number: 8527175
    Abstract: A braking/driving control apparatus for a vehicle includes a basic control unit which calculates and outputs a target axle torque based on a target acceleration and a driving resistance of the vehicle and which determines an axle torque for a power train of the vehicle and an axle torque for a braking apparatus of the vehicle based on the calculated target axle torque, a sliding-down prediction determining unit which determines whether there is a possibility that the vehicle slides down rearwards on an uphill road, and a sliding-down preventing process executing unit which performs a process for reducing a possibility that the vehicle slides down, based on a determination result of the sliding-down prediction determining unit.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: September 3, 2013
    Assignees: Advics Co., Ltd., DENSO CORPORATION
    Inventors: Masayoshi Takeda, Masaki Maruyama, Yukio Mori, Kazuya Taniguchi, Daisuke Tokumochi
  • Patent number: 8521383
    Abstract: A method for controlling an automated friction clutch that is located between a drive motor and a transmission in a motor vehicle that is equipped with fraction control and driving condition recognition for detecting current driving conditions.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: August 27, 2013
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Mario Jung, Olaf Werner
  • Patent number: 8509977
    Abstract: A method of operating a drivetrain of a motor vehicle which comprises a hybrid drive with a combustion engine coupled by a clutch to an electric motor. To start the combustion engine with the electric motor, the clutch is partially engaged to a slipping condition to deliver electric motor torque from a starting value, the torque transmitted by the clutch is increased to a first final value. If during this, the combustion engine begins turning, the break-away torque of the internal combustion engine is determined. If the combustion engine does not begin turning, the clutch is further engaged to a slipping condition starting from a second initial value, such that torque transmitted by the clutch increases linearly until the combustion engine begins turning, and the break-away torque of the internal combustion engine is determined from the clutch torque at which the combustion engine begins turning.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: August 13, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Bernd Allgaier, Friedrich Tenbrock, Michael Gromus
  • Patent number: 8504259
    Abstract: A method for controlling a hybrid powertrain system based upon determined inertial effects for a continuously variable operating range state includes monitoring an operator torque request and a rotational speed of the output member, determining an inertial effect on an input speed of the input member for a continuously variable operating range state, and controlling motor torque outputs from the electric machines to meet the operator torque request based upon the inertial effect on the input speed of the input member.
    Type: Grant
    Filed: September 20, 2008
    Date of Patent: August 6, 2013
    Assignees: GM Global Technology Operations LLC, Daimler AG, Chrysler Group LLC, Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Anthony H. Heap, Kee Yong Kim
  • Patent number: 8489299
    Abstract: A method is disclosed for obtaining a signal representing motor vehicle acceleration. The method involves obtaining a high pass filtered vehicle acceleration signal and a low pass filtered vehicle acceleration signal. One of these signals (preferably the high pass filtered signal) is obtained based upon the net driving force applied to the vehicle, which can be used to obtain an estimate of acceleration by means of an adoptive vehicle model (28). The other signal is obtained by measurement, for example by differentiating a measured vehicle speed signal with respect to time. Adding the two filtered signals together gives a vehicle acceleration signal of potentially good quality.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: July 16, 2013
    Assignee: Torotrak (Development) Limited
    Inventor: Stephen William Murray
  • Patent number: 8489303
    Abstract: A control system includes an engine control module and a transmission control module. The transmission control module communicates with the engine control module via a network. The engine control module generates a mean engine speed signal and a minimum engine speed signal. The engine control module transmits the mean engine speed signal and the minimum engine speed signal to the transmission control module via the network. The transmission control module controls operation of at least one of a torque converter and a transmission based on the mean engine speed signal and the minimum engine speed signal. The torque converter is connected between an engine and the transmission.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: July 16, 2013
    Inventors: Andrew W. Phillips, David S. Mathews
  • Patent number: 8478470
    Abstract: A drivetrain system for a mobile machine is disclosed. The drivetrain system may have an engine, a generator driven by the engine to generate electric power, and a traction motor driven by the electric power from the generator. The drivetrain system may also have a controller in communication with the engine, the generator, and the traction motor. The controller may be configured to determine a change in loading on the traction motor, and determine a change in fueling of the engine that will be required to accommodate the change in loading on the traction motor. The controller may also be configured to selectively rate-limit the change in fueling, and implement the rate-limited change in fueling prior to transmission of the change in loading on the traction motor to the engine.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: July 2, 2013
    Assignee: Caterpillar Inc.
    Inventors: Matthew D. Meads, Keith A. Leisinger, Rajeswari Addepalli
  • Patent number: 8473139
    Abstract: A hybrid vehicle driving apparatus includes a clutch control device and an automatic transmission control device that are connected to mutually communicate. The clutch control device sends a request to wait gear shift to the automatic transmission control device while front clutch operation is in preparation. The automatic transmission control device that receives the request to wait gear shift determines whether priority is given to engaging or disengaging the front clutch or to shifting gears of the automatic transmission. The automatic transmission control device that is determined to give priority to the front clutch operation sends out a gear shift in stand-by state signal to the clutch control device while maintaining the automatic transmission in a gear shift prepared state. The clutch control device that receives the gear shift in progress signal restrains the front clutch from engaging or disengaging while maintaining the front clutch in an operation prepared state.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: June 25, 2013
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventor: Suguru Futamura