Control Of Engine Torque Patents (Class 701/84)
  • Patent number: 10126420
    Abstract: Disclosed herein are an automotive radar apparatus and a method of controlling automotive radar, capable of recognizing a road gradient by easily adjusting a vertical scan angle based on intensities of radio waves received by radar of a vehicle traveling on a road to recognize a gradient of the road, and of preventing deterioration of detection performance by vertically adjusting a radio wave elevation angle of the radar so as to be suitable for the road gradient. The automotive radar apparatus includes an antenna unit transmitting radar signals or receiving reflected radar signals according to elevation angles of a transmission antenna or a receiving antenna, and a control unit searching a center angle based on received power according to the elevation angles to set a beam corresponding to the center angle as a center beam and setting ranges of interest on the basis of the center beam.
    Type: Grant
    Filed: March 18, 2015
    Date of Patent: November 13, 2018
    Assignee: MANDO CORPORATION
    Inventors: Jae Eun Lee, Hae Seung Lim, Seong Hee Jeong
  • Patent number: 10118625
    Abstract: A method for damping juddering in the drive train of a vehicle having an electric motor as the drive motor, and a vehicle having a closed-loop control system to carry out the method. The method includes calculating an electric motor setpoint torque for actuating the electric motor from an electric motor request torque which corresponds to a current request for a torque, and calculating a correction torque as a function of the electric motor request torque and a correction factor which is determined from a rotational speed of the electric motor.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: November 6, 2018
    Assignee: MAGNA STEYR Fahrzeugtechnik AG & Co KG
    Inventor: Christian Pongratz
  • Patent number: 10040442
    Abstract: A hybrid vehicle includes an electronic control unit configured to: set a target rotation speed of an engine based on a vehicle speed and a shift position; set a driving force when an upper-limit power is output to a drive shaft as an upper-limit driving force; set a target engine power such that the smaller of the upper-limit driving force and the required driving force is output to the drive shaft; and control the engine, the first motor, and the second motor such that the engine to rotate at the target rotation speed and to output the target power. At this time, the upper-limit power is set to be lower when a coolant temperature of the engine is low than when the coolant temperature is high.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: August 7, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shunya Kato, Masaya Sugai
  • Patent number: 9873352
    Abstract: A control system for a vehicle including a three-phase AC motor, a first switching device, a second switching device, and a power converter, is provided. The control system includes a short-circuit detector, and an ECU. The ECU is configured to: (a) control the power converter, when it is determined that the vehicle is stopped, so as to place, the power converter in a predetermined condition in which one of the first switching device and the second switching device for all of the three phases is in an OFF state, and (b) control the power converter when the short-circuit detector detects a short circuit in one of the first switching devices and the second switching devices, so that said one of the first and second switching devices in which the short circuit is detected provides the ON state in the predetermined condition.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: January 23, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshitaka Niimi, Masaki Okamura, Shintaro Tsujii, Wanleng Ang
  • Patent number: 9862373
    Abstract: An electronic control unit sets a drivability target engine speed, sets upper limit engine power on the basis of the drivability target engine speed, and sets upper limit drive power by dividing the upper limit engine power by a rotational speed of a driveshaft. Then, the electronic control unit compares accelerator requested drive power with the upper limit drive power, sets target engine power such that lower one of the accelerator requested drive power and the upper limit drive power is output to the driveshaft, and controls an engine, a first motor, and a second motor such that the target engine power is output from the engine. In this way, a driver can receive further favorable drive feeling.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: January 9, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shunya Kato, Ikuo Ando, Naoki Ishikawa, Tooru Matsubara, Munehiro Katsumata, Masaya Sugai
  • Patent number: 9677246
    Abstract: A control unit of a work vehicle has a transmission requirement determination unit, a command-torque determination unit, and a tractive force limiting unit. The transmission requirement determination unit determines a required tractive force on the basis of an operating amount of an accelerator operating member. The required tractive force is a target tractive force of a travel device. The command-torque determination unit determines an output torque of the electric motor so that the tractive force of the vehicle reaches the required tractive force. The tractive force limiting unit reduces the required tractive force to a value less than a value corresponding to the operating amount of the accelerator operating member when the vehicle is excavating.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: June 13, 2017
    Assignee: KOMATSU LTD.
    Inventors: Masao Yoshizawa, Shunsuke Miyamoto, Yasuki Kishimoto
  • Patent number: 9423023
    Abstract: A drive shaft protection apparatus may include a Revolutions Per Minute RPM) detection device configured to detect an RPM of an engine and of a turbine, a gear-shifting detection device configured to detect a lever position of a transmission, a steering-angle detection device configured to detect a steering angle, an accelerator pedal position detection device configured to detect a displacement of an accelerator pedal, an engine-torque detection device configured to detect an engine torque of a vehicle, a loss-torque detection device configured to detect loss torque of the vehicle, and a controller configured to change a limit torque based on a bending angle of a drive shaft upon receiving the steering angle, and variably perform engine torque reduction control in a manner that torque applied to the drive shaft does not exceed the limit torque in response to output signals of the respective detection device.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: August 23, 2016
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Chan Hee Won, Tae Young Park
  • Patent number: 9334827
    Abstract: An agricultural working system includes a self-propelled agricultural working machine equipped with an attachment in the form of a soil-management device such as a plow, a cultivator, or a harrow, a drive unit that acts as a drive train on land wheels, a control arrangement and a user interface and display unit associated with the control arrangement (5). The control arrangement ascertains the torque loads that occur during the working operation for at least one drive-train component, for example, drive shafts of the land wheels and provides at least one control function on the basis of the ascertained torque loads.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: May 10, 2016
    Assignee: CLAAS Selbstfahrende Erntemaschinen GmbH
    Inventors: Carsten Seelke, Klaus Ellermann
  • Patent number: 9108520
    Abstract: An ECU executes a program including the steps of: executing addition processing when current IB is equal to or more than a current upper limit value IB(0) and there is a divergence between command power Pc and an upper limit value Woutf of an allowable range of electric power at the time of agreement between the current IB and the current upper limit value IB(0); and executing normal Woutf determination processing when the current IB is less than the current upper limit value IB(0) or there is no divergence between the command power Pc and the upper limit value Woutf at the time of agreement between the current IB and the current upper limit value IB(0).
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: August 18, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroki Endo, Masaya Yamamoto, Itaru Seta
  • Patent number: 9075703
    Abstract: To provide a vehicle state amount estimating device capable of suppressing sudden change in behavior at the time of behavior control of the vehicle, in a vehicle state amount estimating device that estimates a target lateral acceleration used in a behavior control of a vehicle based on a lateral acceleration actual measurement value and a lateral acceleration estimated value at time of traveling of the vehicle; when estimating the target lateral acceleration based on the lateral acceleration actual measurement value and the lateral acceleration estimated value, the target lateral acceleration is estimated by performing weighting on the lateral acceleration actual measurement value and the lateral acceleration estimated value according to a state of side slipping of the vehicle.
    Type: Grant
    Filed: February 10, 2012
    Date of Patent: July 7, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Mitsuhiro Tsumano
  • Patent number: 9051883
    Abstract: A power output of engine is restricted to become a power output which is calculated by using a first restriction accelerator operation degree when a brake operation with a brake pedal is detected in addition to an accelerator pedal operation with an accelerator pedal; and the power output of the engine is restricted to become a power output which is calculated by using a second restriction accelerator operation degree in place of the first restriction accelerator operation degree when an amount of change of the accelerator operation degree per unit time becomes larger than a preset certain value in a direction of depression of the accelerator pedal under a condition where the power output of the engine is restricted by using the first restriction accelerator operation degree, the second restriction accelerator operation degree being larger than the first restriction accelerator operation degree.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: June 9, 2015
    Assignee: NISSAN MOTOR CO., LTD.
    Inventor: Masahiro Iriyama
  • Patent number: 9050978
    Abstract: A drive and control system is provided for a towing vehicle pulling a towed implement, such as a tractor pulling a scraper. The drive system includes an engine which drives a generator for generating electric power. A towing vehicle electric drive motor is connected to driven wheels of the towing vehicle through a transmission. An assist or implement electric drive motor is drivingly connected to driven wheels of the implement. A power distribution unit controls distribution of electric power from the generator to the towing vehicle and implement drive motors. A control unit controls the power distribution unit as a function of an operator set power split, an operator set maximum wheel slip, sensed wheel slip and other sensed parameters.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: June 9, 2015
    Assignee: DEERE & COMPANY
    Inventors: Gary S. Keys, II, Christopher D. Turner, Joe L. Schutte
  • Publication number: 20150149057
    Abstract: A system and method for protecting a drive shaft that include a vehicle state detector configured to detect vehicle information including currently selected shift speed, hydraulic pressure signal detected by a hydraulic pressure detector mounted to a hydraulic pressure power steering assembly, vehicle speed, and engine RPM. In addition, a traction controller is configured to analyze the vehicle information delivered from the vehicle state detector and request reduction of torque when a predetermined condition is satisfied. An engine controller is configured to reduce output torque of an engine based on torque reduction requested by the traction controller to cause the torque applied to the drive shaft to be less than a limit torque.
    Type: Application
    Filed: November 27, 2013
    Publication date: May 28, 2015
    Applicant: Hyundai Motor Company
    Inventors: Jaewan Cho, Young Deok Won
  • 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: 9037331
    Abstract: A two-wheeled inverted pendulum vehicle includes: single-winding first and second motors respectively rotating one of two wheels; first and second control systems respectively supplying drive currents to the first and second motors; a sensor detecting a physical quantity that varies with a turn of the vehicle; a dynamic brake unit being able to switch between active and inactive states of dynamic brake being applied to the first motor; and a control unit, when the control unit has determined that the vehicle is turning about the second motor side on the basis of the physical quantity while supply of drive current from the first control system to the first motor is inhibited, activating dynamic brake in the dynamic brake unit. The first control system, when an abnormality has been detected in the first control system, inhibits supply of drive current from the first control system to the first motor.
    Type: Grant
    Filed: August 23, 2013
    Date of Patent: May 19, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tetsuya Taira, Hiroshi Bitoh
  • Publication number: 20150127232
    Abstract: A traction control device reducing an output of an engine unit for suppressing a spin of a driving wheel of a motorcycle, includes: a first spin detection unit detecting a spin of a rear wheel based on a vehicle speed calculated from a rotation of a front wheel being a driven wheel to which a driving force is not transmitted from the engine unit, and a vehicle speed calculated from a rotation of the rear wheel being the driving wheel to which the driving force is transmitted; and a second spin detection unit detecting the spin of the rear wheel based on a vehicle speed calculated from the rotation of the front wheel, and a vehicle speed calculated from a rotation of the engine unit.
    Type: Application
    Filed: November 4, 2014
    Publication date: May 7, 2015
    Applicant: SUZUKI MOTOR CORPORATION
    Inventors: Masahiro HAMAMURA, Yutaro KOBAYASHI, Kazunori KAWAI
  • Patent number: 9020731
    Abstract: A PI calculation unit of a rectangular-wave voltage control unit calculates a control deviation by performing a PI calculation on a torque deviation relative to a torque command value, and outputs a voltage phase of a rectangular-wave voltage in accordance with the control deviation. A rate-of-change limiter imposes a restriction on the rate of change of the voltage phase. Here, the rate-of-change limiter lessens the restriction on the rate of change of the voltage phase, when the rate of change of the rotational speed of an electric motor is larger than a predetermined value representing an abrupt change of the rotational speed of the electric motor.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: April 28, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kenji Yamada
  • Publication number: 20150105991
    Abstract: A method for controlling an internal combustion engine of a motor vehicle includes detecting a driving situation of the motor vehicle and determining a setpoint torque (M2) based on the detected driving situation. An expected driving situation of the motor vehicle is ascertained and a torque reserve is determined based on the ascertained expected driving situation of the motor vehicle. The setpoint torque (M2) is set by setting an ignition angle of the internal combustion engine, and the torque reserve (MR) is set by setting a pressure of a gas mixture that flows into the internal combustion engine.
    Type: Application
    Filed: October 10, 2014
    Publication date: April 16, 2015
    Inventors: Ulrich Franz Uhlirsch, Sven Norberg, Volker Schmalzriedt
  • Patent number: 9008938
    Abstract: A control system for controlling a driving power source in a vehicle, includes a driving state detector for detecting a driving state of the vehicle; a first determiner for determining whether or not the driving state detected by the driving state detector is a first state; a second determiner for determining whether or not the driving state detected by the driving state detector is a second state; a rotational speed limiter for executing rotational speed limiting control for limiting a driving power source rotational speed to a predetermined upper limit value or less when the first determiner determines that the driving state is the first state, during an operation of the driving power source; and a rotational speed limiting termination unit for terminating the rotational speed limiting control, when the second determiner determines that the driving state is the second state, during the operation of the driving power source.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: April 14, 2015
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventor: Yoshimoto Matsuda
  • 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: 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: 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: 8983691
    Abstract: An electric lawn tractor roll away prevention system includes a brushless DC electric motor powering a traction drive wheel on the electric lawn tractor. The motor is connected to phase wires and provides a back EMF voltage on the phase wires if the electric lawn tractor rolls and turns the traction drive wheel without electric power from the motor. A three phase inverter rectifies the back EMF voltage, turns on the traction controller if the rectified voltage reaches a pre-specified threshold, and applies a voltage to the phase wires to reduce the speed of the electric lawn tractor by regenerative braking.
    Type: Grant
    Filed: August 7, 2012
    Date of Patent: March 17, 2015
    Assignee: Deere & Company
    Inventors: Roger K. Amundson, Jacob C. Kallara, Patrick W. Cross, Troy W. Harris, III
  • Patent number: 8983739
    Abstract: A method of estimating soil conditions of a work surface during operation of a track-type tractor measures current operating conditions and current operating state to develop adjustments to a nominal pull-slip curve. The adjusted pull-slip curve is used to calculate optimum performance in terms of an input variable such as track speed. Two factors are developed to reflect soil conditions, coefficient of traction and a shear modulus adjustment that affect different portions of the nominal pull slip curve.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: March 17, 2015
    Assignee: Caterpillar Inc.
    Inventor: Joseph Faivre
  • Publication number: 20150073679
    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: Application
    Filed: September 7, 2014
    Publication date: March 12, 2015
    Inventors: Paul Darnell, Robert Bird
  • Patent number: 8977460
    Abstract: A method managing a device distributing engine torque between main and secondary wheel sets of a motor vehicle, the distributing device including an actuator distributing engine torque, a control unit exhibiting plural distribution modes of the engine torque and adopting one distribution mode as a function of a variable and a button selecting a distribution mode delivering an information item representative of the button position, the control unit determining, in regular operation, the variable, as a function of the information item; the method includes: detecting potential failure of the selection button, including verifying consistency of the information item; activation of degraded mode of operation, when a failure of the button is detected, in which a constant value is allocated to the variable; during degraded operation, monitoring end of failure, including verifying consistency of the information item; activation of regular mode of operation, when end of failure is detected.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: March 10, 2015
    Assignee: RENAULT s.a.s.
    Inventors: Pascal Febrer, Francois Foussard, Stephane Guegan, Alessandro Monti
  • Publication number: 20150065299
    Abstract: A control system to generate a yaw torque of an all-wheel drive vehicle comprises a brake control module 18. The brake control module 18 determines the desired powertrain torque 44 for the vehicle 10 based upon a plurality of factors including available torque from the powertrain. The brake control module 18 determines a first torque 44 and a second torque 26, wherein the first torque 44 and the second torque 26 are combined to provide the total desired yaw torque 49 of the vehicle 10. The first torque 44 is generated between wheels of the vehicle 10 by applying torque 44 from the powertrain 14 to different wheels 21 of the vehicle 10 and the second torque 26 is generated by applying different braking torque from a braking system 16 of the vehicle 10.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 5, 2015
    Inventors: Daniel Gregory Goodrich, Adam Roger Pagot, Matthew Conrad Tuhro, Vesa Vihelm Luomaranta, Ryan Wayne Alaspa, Timothy John Hayden
  • Patent number: 8972138
    Abstract: A method for controlling a vehicle's speed by adopting a desired speed vset for the vehicle; determining a horizon for the intended itinerary made up of route segments, effecting the following during each of a number of simulation cycles (s) each comprising a number N of simulation steps conducted at a predetermined frequency f: first predicting the vehicle's speed vpred—cc along the horizon with conventional cruise control when vset is presented as reference speed, comparing the predicted vehicle speed vpred—cc in a range vmin to vmax, making a second prediction of the vehicle's speed vpred—Tnew along the horizon based on the vehicle's engine torque T; determining a reference value for how the vehicle's speed is to be influenced on the basis of at least one of the comparisons and the predicted vehicle speed vpred—Tnew; controlling the vehicle by the reference value. A module for the foregoing controls a vehicle's speed.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: March 3, 2015
    Assignee: Scania CV AB
    Inventors: Oskar Johansson, Maria Södergren, Fredrik Roos
  • Patent number: 8961370
    Abstract: A vehicle control apparatus includes a controller that performs control such that an engine output does not increase when a control mechanism and a brake override are operated simultaneously, wherein the control mechanism controls the engine output independently of an accelerator operation amount, and wherein the brake override system reduces the engine output in response to simultaneous operations of an accelerator and a brake.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: February 24, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Akihiro Kida, Michihito Shimada, Masashi Takagi, Hiroshi Shimada
  • Patent number: 8965658
    Abstract: A vehicle controller includes a wheel speed sensor, a skid sensor, an upper limit calculator, and a motive power controller. The wheel speed sensor is configured to detect rotational speed of driving wheels. The skid sensor is configured to determine whether or not the driving wheels are skidding based on an output of the wheel speed sensor. The upper limit calculator is configured to calculate an upper limit of rotational speed of the driving wheels if the skid sensor determines that the driving wheels are skidding. The motive power controller is configured to control motive power output from the driving source so that rotational speed of the driving wheels is equal to or smaller than the upper limit calculated by the upper limit calculator.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: February 24, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kenji Nakajima, Youji Yasuoka, Masafumi Amano, Takayuki Yamasaki, Kazuhiro Nakano
  • Patent number: 8958968
    Abstract: A traction control device for a motorcycle eliminates a need for a waiting time for detecting an amount of change in a vehicle state and a subsequent prediction time, and can execute quick traction control. The traction control device includes an engine driving force control unit, for calculating a real slip ratio of the motorcycle, setting a target slip ratio according to a driving state of the motorcycle, and controlling a driving force of an engine so that the real slip ratio becomes the target slip ratio. The traction control device also includes a throttle grip opening degree sensor for detecting an opening degree of a throttle grip; and a bank angle sensor for detecting a bank angle of the motorcycle. The engine driving force control unit calculates the target slip ratio on a basis of the throttle opening degree and the bank angle of the motorcycle.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 17, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Fuyuki Kobayashi, Yoichiro Fukao, Yohei Maruyama, Tatsuya Ito
  • Patent number: 8958967
    Abstract: A braking-force control device has a brake control function for performing brake control on a front outside wheel when a vehicle is detected to be in an oversteer condition during a turning operation and for performing brake control on a rear inside wheel when the vehicle is detected to be in an understeer condition during a turning operation. For preventing the oversteer condition, a command for reducing the engine torque is output. On the other hand, for preventing the understeer condition, the engine torque is limited in accordance with a permissible engine torque value that is calculated on the basis of a road-surface friction coefficient, and ground loads and lateral tire forces of individual wheels. If it is detected that engine braking is in operation, the engine torque is adjusted to substantially zero.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: February 17, 2015
    Assignee: Fuji Jukogyo Kabushiki Kaisha
    Inventors: Koji Matsuno, Takeshi Yoneda, Masato Igarashi, Yosuke Morokuma
  • 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: 8924124
    Abstract: Methods and systems are provided for improving vehicle torque control accuracy. Data points of an engine torque data set are adjusted en masse by an on-board vehicle controller while also being adjusted individually by an off-board controller. By adjusting engine operation based on a torque data set that is updated by each of the on-board and off-board controllers, engine torque errors can be reliably determined and compensated for.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: December 30, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: John Anthony Lockwood, Jeffrey Allen Doering
  • Patent number: 8914215
    Abstract: A method of measuring and displaying track-type tractor performance in real time calculates both a measure of work performance and a theoretical optimum work performance for a given input state, such as track speed. After estimating soil conditions, the theoretical optimum is estimated using an iterative technique. The optimum and current performance are normalized and displayed using a first bar representing a full range of work performance, a second bar depicting a range of optimum performance for current conditions is presented overlying the first bar, and an indicator line showing the current performance. This allows an operator to adjust speed or load accordingly. A coefficient of traction and a shear modulus adjustment, reflecting soil conditions, are calculated at the tractor during operation and used to offset a table of ideal condition operating points to produce the second bar.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: December 16, 2014
    Assignee: Caterpillar Inc.
    Inventors: Joseph Faivre, Nathaniel Doy, Lance Cowper
  • Publication number: 20140365098
    Abstract: System including an effort-monitoring system configured to control tractive efforts (TEs) individually produced by propulsion-generating vehicles in a vehicle system. The effort-monitoring system is configured to control each of the propulsion-generating vehicles to provide a respective prescribed TE. The vehicle system operates at a system TE when each of the propulsion-generating vehicles is providing the respective prescribed TE. The prescribed TEs are determined by at least one of an operating plan of the vehicle system or a regulation that limits TE or ground speed of the vehicle system. In response to determining that a first propulsion-generating vehicle is providing a reduced TE that is less than the prescribed TE of the first propulsion-generating vehicle, the effort-monitoring system is configured to control a second propulsion-generating vehicle to exceed the prescribed TE of the second propulsion-generating vehicle so that the vehicle system is operating at or below the system TE.
    Type: Application
    Filed: August 26, 2013
    Publication date: December 11, 2014
    Applicant: General Electric Company
    Inventors: Brian Douglas Lawry, Jared Klineman Cooper
  • 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: 8897941
    Abstract: A motor operation control system and method for controlling first and second electric motors of an electrically variable transmission. The system and method determine a minimum battery power associated with a torque of the second electric motor, set the torque of the second electric motor based on the determined minimum battery power, and set a torque of the first electric motor based on the determined minimum battery power.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: November 25, 2014
    Assignee: Chrysler Group LLC
    Inventors: Nadirsh Patel, Goro Tamai, Ashish Krupadanam
  • 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: 8892330
    Abstract: A variety of methods and arrangements for operating an internal combustion engine and one or more motor/generators in a hybrid vehicle are described. Generally, the engine is operated in a variable displacement or skip fire mode. Depending on the state of charge of an energy storage device and/or other factors, the engine is operated to generate more or less than a desired level of torque. The one or more motor/generators are used to add or subtract torque so that the motor/generator(s) and the engine collectively deliver the desired level of torque. In some embodiments, the engine may be run with a substantially open throttle to reduce pumping losses and improve fuel efficiency.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: November 18, 2014
    Assignee: Tula Technology, Inc.
    Inventors: Ronald D. Yuille, Mark A. Shost, Louis J. Serrano, John W. Parsels, Matthew A. Younkins
  • Patent number: 8880258
    Abstract: Methods and arrangements for controlling hybrid powertrains are described. In one aspect, an engine is alternatingly operated at different effective displacements. One displacement delivers less than a requested powertrain output and the other delivers more. A motor/generator system is used to add and subtract torque to/from the powertrain to cause the net delivery of the requested powertrain output. In some embodiments, energy added and subtracted from the powertrain is primarily drawn from and stored in a capacitor (e.g., a supercapacitor or an ultracapacitor) when alternating between effective displacements. In another aspect a hybrid powertrain arrangement includes an engine a motor/generator and an energy storage system that includes both a battery and a capacitor. The capacitor stores and delivers electrical energy to the motor/generator unit during operation of the engine in a variable displacement or skip fire mode.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: November 4, 2014
    Assignee: Tula Technology, Inc.
    Inventors: Leo G. Breton, Ronald D. Yuille, Mark A. Shost, Louis J. Serrano, John W. Parsels, Matthew A. Younkins
  • 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: 8868252
    Abstract: A microprocessor driven two dimensional search engine examines transmission operating points within a plurality of search range spaces and assists in determining properties associated with the driveline at various operating points within the space. The size of the space is reduced by rearrangement of data.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: October 21, 2014
    Assignees: GM Global Technology Operations LLC, Daimler AG, Chrysler Group LLC, Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Anthony H. Heap, Kee Yong Kim, Bin Wu
  • Patent number: 8849538
    Abstract: A torque distribution apparatus includes an instructed torque acquiring unit that acquires input instructed torque, a determining unit that determines whether to perform power running control or regenerative braking, an efficiency map acquiring unit that based on a determination result, acquires a motor efficiency map, a vehicular speed detecting unit, a drive wheel rotational speed detecting, a slip rate calculating unit that calculates slip rate at drive wheels, a calculating unit that based on the slip rate, creates an efficiency variation expression that indicates efficiency values on a performance curve that indicates relations between drive wheel rotational speed and torque, a distributing unit that calculates based on the slip rate, the instructed torque, and the torque optimizing efficiency, torque distribution values such that overall efficiency during power running and during regeneration are maximized, and a control unit that controls torque distribution to the motors.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: September 30, 2014
    Assignee: Pioneer Corporation
    Inventors: Masahiro Kato, Eiji Muramatsu, Kazutoshi Kitano, Chihiro Kawabata, Kazunobu Hashimoto, Yoshikazu Takeuchi
  • Patent number: 8843291
    Abstract: An electric vehicle includes an in-wheel motor drive system. The in-wheel motor drive system includes a wheel bearing unit rotatably supporting a drive wheel, a motor unit, and a reducer unit. The electric vehicle also includes a disturbance observer that determines an estimate of external force influence on the drive wheel. The electric vehicle further includes a slip level-responsive corrector. The slip level-responsive corrector may use the estimate of external force influence, calculate a correction value that may correspond to slip level of the drive wheel, and correct an accelerator signal to the motor unit with the correction value to produce a motor torque command value.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: September 23, 2014
    Assignee: NTN Corporation
    Inventor: Takayoshi Ozaki
  • 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: 8825336
    Abstract: A method for detecting a burnout state during which driven wheels of a motor vehicle are caused to spin is provided. The method includes detecting a rotational wheel speed of a first driven wheel and a rotational wheel speed of a second driven wheel and comparing the rotational wheel speed of the faster turning wheel with a first constant. A vehicle speed is detected and compared with a second constant. An engine rotational speed is detected and compared with a third constant. The burnout state is detected when the rotational wheel speed of the faster turning wheel is greater than the first constant, the vehicle speed is less than the second constant, and the engine rotational speed is greater than the third constant.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: September 2, 2014
    Assignee: GM Global Technology Operations LLC
    Inventor: Willem Sollart
  • Patent number: 8818676
    Abstract: An engine control system includes a torque request control module to determine a first engine torque request. An artificial neural network (ANN) torque request module determines a second engine torque request using an ANN model. A torque security check module that selectively generates a malfunction signal based on the difference between the first engine torque request and the second engine torque request.
    Type: Grant
    Filed: May 2, 2006
    Date of Patent: August 26, 2014
    Inventors: Jinchun Peng, Timothy J. Hartrey
  • 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: 8812202
    Abstract: A drive controller of an operating machine configured to drive a structure by a hydraulic motor and an electric motor includes: a remote control valve configured to determine the operation amount of the structure; an electric motor torque calculation portion configured to calculate torque of the electric motor; a hydraulic motor torque calculation portion configured to calculate torque of the hydraulic motor; a controller configured to transmit an opening position control signal to the control valve based on the operation amount determined by the remote control valve such that torque necessary to drive the structure is obtained from the torque of the electric motor and the torque of the hydraulic motor; and solenoid-operated reducing valves and each configured to reduce a pilot pressure, to be applied to the control valve, based on the opening position control signal output from the controller.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: August 19, 2014
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Ryo Yamamoto, Masahiro Yamada, Yoji Yudate