Control Of Engine Torque Patents (Class 701/84)
  • Patent number: 8655563
    Abstract: In a braking/driving force control apparatus, a vehicle target braking/driving force and a vehicle target yaw moment through the control of braking/driving forces of wheels are calculated, and when the target braking/driving force and the target yaw moment cannot be achieved through the control of the braking/driving forces of the wheels, the vehicle target braking/driving force after the modification and the vehicle target yaw moment after the modification are calculated such that, within the range where the ratio of the vehicle target braking/driving force after the modification and the vehicle target yaw moment after the modification coincides with the ratio of the target braking/driving force and the target yaw moment, the vehicle braking/driving force and the vehicle yaw moment by the target braking/driving forces of the wheels take the greatest values.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: February 18, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshinori Maeda, Kazuya Okumura, Michitaka Tsuchida, Yoshio Uragami, Kensuke Yoshizue, Satoshi Ando, Koji Sugiyama
  • Publication number: 20140046568
    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: Application
    Filed: April 21, 2011
    Publication date: February 13, 2014
    Inventors: Masahiro Kato, Eiji Muramatsu, Kazutoshi Kitano, Chihiro Kawabata, Kazunobu Hashimoto, Yoshikazu Takeuchi
  • Patent number: 8649945
    Abstract: A traction force control section of a wheel loader reduces maximum traction force to below the maximum traction force with traction force control in an off state when the traction force control is in an on state. The traction force control section increases the maximum traction force when determination conditions are satisfied with the traction force control in the on state. The determination conditions include that the work situation is digging, that the operation amount of the acceleration operation member is the predetermined operation threshold or more, and that a boom angle is the predetermined angle threshold or more.
    Type: Grant
    Filed: May 15, 2012
    Date of Patent: February 11, 2014
    Assignee: Komatsu Ltd.
    Inventor: Atsushi Shirao
  • Patent number: 8639402
    Abstract: A system for a machine having an electric drive configuration is provided. The system includes a first motor associated with a first wheel, which provides torque to drive the first wheel, a second motor associated with a second wheel, which provides torque to drive the second wheel. The system further includes a controller configured to determine a rotational speed of the first wheel, determine a rotational speed of the second wheel, determine a steering angle of the machine, compare the rotational speeds of the first and second wheels, and adjust the torque to the first wheel if the rotational speed of the first wheel is less than the rotational speed of the second wheel.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: January 28, 2014
    Assignee: Caterpillar Inc.
    Inventors: William J. Tate, Alexander C. Crosman
  • Publication number: 20140025274
    Abstract: An electronically controlled speed limiting system for a turf maintenance machine includes at least one traction motor rotating a wheel. At least one hydraulic pump in fluid communication with the traction motor provides hydraulic fluid to operate the traction motor. At least one actuator in fluid communication with the hydraulic pump varies an output of the hydraulic pump. A controller in communication with the actuator commands the actuator to control the output of the hydraulic pump and thereby an operating speed of the wheel. A brake is activated by the controller if a wheel speed sensor signals the wheel is slip-spinning, to mitigate turf damage. A steering position sensor signal is used by the controller to modify brake activation during machine turns. An inclinometer signal is used by the controller to automatically reduce machine speed on inclined surfaces.
    Type: Application
    Filed: September 23, 2013
    Publication date: January 23, 2014
    Applicant: TEXTRON INC.
    Inventors: Christian Stanton Carver BRYANT, Bryan E. HOLBY, Lynn G. WESTBROOK, Brian MELKA
  • Patent number: 8635000
    Abstract: A brake monitoring system for a machine has at least one traction motor coupled to drive wheels of the machine. An operator input device receives a requested retarding torque from an operator of the machine and sends a signal to a controller that is configured to compare the required retarding torque to a maximum retarding torque available at a particular speed of the traction motor. The controller selectively generates a warning signal based on a comparison of the required retarding torque to a maximum retarding torque available.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: January 21, 2014
    Assignee: Caterpillar Inc.
    Inventors: Matthew L. Hendrickson, Alexander C. Crosman, III, Bo Xie, Bradley S. Bailey
  • Patent number: 8635001
    Abstract: A vehicle control method for a vehicle having an internal combustion engine coupled to a torque converter is described. In one embodiment, the engine air flow and spark are adjusted to control torque converter operation. The method can improve vehicle response to driver accelerator commands.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: January 21, 2014
    Assignee: Ford Global Technologies, LLC
    Inventors: Jeff Doering, Brad Riedle, Rob Ciarrocchi, Scott Redmon, Hank Kwong, William Eckenrode, Frederick Page
  • Patent number: 8626404
    Abstract: The described system and method are implemented within a motor grader or other machine for grading of surfaces, wherein the machine includes a ground engaging element, as well as one or more blades for removing surface material. In this context, the described system and method prevent slippage of the ground engaging element against the underlying surface. In an embodiment, a torque limit is applied, wherein the torque limit corresponds to a torque that is less than that required for slippage under the current operating conditions, thus avoiding the problems caused by both overly aggressive and overly conservative cut depth strategies.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: January 7, 2014
    Assignee: Caterpillar Inc.
    Inventors: Norval P. Thomson, Gregory Durst, Martin Lehman, Shane McBride, Daniel P. Sergison
  • Patent number: 8612102
    Abstract: In a hydraulic excavator, a controller is configured to control output of an engine based on a first engine output torque line that defines an upper limit for engine output torque against engine rotation rate. The controller is configured to determine which of two operations, a high hydraulic load operation in which a work machine is subjected to a high hydraulic load and a low hydraulic load operation in which the work machine is subjected to a low hydraulic load, is being performed. When swinging for a revolving unit and the low hydraulic load operation for the work machine are being performed as a combined operation, the controller is configured to control the output of the engine based on a second engine output torque line. The second engine output torque line is an engine output torque line with a lower engine output torque than the first engine output torque line.
    Type: Grant
    Filed: May 17, 2011
    Date of Patent: December 17, 2013
    Assignee: Komatsu Ltd.
    Inventors: Kouji Ohhigashi, Mitsuhiko Kamado, Takao Suehiro
  • 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: 8606441
    Abstract: An ECU executes a program including the steps of: setting a creep torque reflection ratio; if brake is applied and the vehicle is currently stopped, updating the creep torque reflection ratio to 0; if brake is not applied and despite that the brake fluid's pressure is larger than a hydraulic pressure value, determining that brake hold control is currently exerted, and reducing the creep torque reflection ratio, as based on a map having the brake fluid's pressure as a parameter, to update the creep torque reflection ratio.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: December 10, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kiyoshiro Ueoka
  • Patent number: 8598977
    Abstract: A method and system for monitoring and controlling driver performance in a controlled driving environment. A portable information device is provided to a driver who registers with a server computer for controlling vehicle operation in the driving environment. A record for the driver is stored in a database associated with the server computer. A vehicle is activated using the portable information device for at least an amount of time exceeding a preset threshold value. A speed level and a safety level for the vehicle are dynamically set based on the driver's performance in the driving environment. The driver's performance is monitored in the controlled driving environment and each driving violation that occurs is determined. Violation points are assigned to the driver based on each driving violation and the violation points are added to the driver record stored in the database.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: December 3, 2013
    Assignee: Tiny Towne International LLC
    Inventors: Pierre Maalouf, Georges Moussa
  • 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: 8594901
    Abstract: An estimating method for transmitting torque of a dry type clutch in a vehicle, may include a slip determining step of determining by a processor whether only one clutch slips between an engine and a transmission, a transmitting torque estimating step of estimating a current transmitting torque of the dry type clutch by using a torque observer when the only one clutch slips as a result of performing the slip determining step, and an updating step of reflecting the current transmitting torque of the dry type clutch estimated in the transmitting torque estimating step and an actuator torque in the transmitting torque estimating step to a T-S (Torque-Stroke) curve.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: November 26, 2013
    Assignees: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Young Min Yoon, Sung Hyun Cho, Ho Young Lee, Seung Sam Baek
  • Patent number: 8589047
    Abstract: A method is provided for operating a combustion engine of a motor vehicle during a deceleration of the combustion engine. The method includes, but is not limited to determining a degree of depression of an accelerator pedal of the motor vehicle takes place, determining of a degree of depression of a brake pedal of the motor vehicle takes place. Furthermore, an adjusting of a throttle valve arranged in an intake tract of the combustion engine as a function of the determined degree of depression of the accelerator pedal and as a function of the determined degree of depression of the brake pedal takes place. The throttle valve is adjusted into an at least partially opened position in the event that the determined degree of depression of the brake pedal undershoots a first predetermined threshold value and the throttle valve is adjusted into a closed position in the event that the determined degree of depression of the brake pedal exceeds a second predetermined threshold value.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: November 19, 2013
    Assignee: GM Global Technology Operations LLC
    Inventor: Torsten Mueller
  • Patent number: 8577569
    Abstract: A vehicle control apparatus includes a bad-road control-mode switch configured to be manipulated by a driver, and a bad-road control section configured to perform a bad-road control when a bad-road control mode is selected by the bad-road control-mode switch. The bad-road control section includes a braking-force applying section configured to apply a braking force to a drive-wheel, and a driving-force applying section configured to apply a driving force to the drive-wheel which is receiving the braking force from the braking-force applying section, as the bad-road control.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: November 5, 2013
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventor: Nobuyuki Ohtsu
  • Patent number: 8571774
    Abstract: One disclosed embodiment relates to a propulsion system for a machine. The propulsion system may include a prime mover operatively connected through a continuously variable transmission to a propulsion device. The propulsion system may also include propulsion-system controls that control an operating parameter of the continuously variable transmission, which may include adjusting the operating parameter based on operator input. Controlling the operating parameter may also include determining an adjustment limit for the operating parameter based on one or more operating conditions and applying the adjustment limit to the operating parameter to modify at least one of acceleration and jerk of the machine based on the one or more operating conditions.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: October 29, 2013
    Assignee: Caterpillar Inc.
    Inventors: Kristofor Lee Dahl, Brian Douglas Hoff, Richard George Ingram, Michael Anthony Spielman, Jr., Benjamin B. Schmuck, Alberto Martinez, Jr., Yaang Zhao
  • Patent number: 8565995
    Abstract: In a method for detecting wheel slip at at least one wheel which is driven by an engine, the drive torque acting upon the wheel is varied, and the reaction of the wheel to the change in the drive torque is measured and evaluated.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: October 22, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Stefan Kueperkoch, Frank Leibeling, Jasper-Jeen Jeninga
  • Patent number: 8554441
    Abstract: A traction control system and methodology that utilize a phase-out and phase-in of maximum drive torque and/or a regenerative brake torque based on vehicle speed and road slope.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: October 8, 2013
    Assignee: e-AAM Driveline Systems AB
    Inventors: Martin Johansson, Matilda Hallnor
  • Publication number: 20130261925
    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: Application
    Filed: March 15, 2013
    Publication date: October 3, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Fuyuki KOBAYASHI, Yoichiro FUKAO, Yohei MARUYAMA, Tatsuya ITO
  • Publication number: 20130245911
    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: Application
    Filed: February 27, 2013
    Publication date: September 19, 2013
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Kenji NAKAJIMA, Youji YASUOKA, Masafumi AMANO, Takayuki YAMASAKI, Kazuhiro NAKANO
  • Patent number: 8538652
    Abstract: The invention relates to a method for adjusting the driveability of at least one wheel of a vehicle, in particular an automobile, that comprises a wheel driving engine (50), engine control means (40), means (62) for supplying information on an acceleration level desired by the vehicle driver, means (22) for providing information on the vehicle acceleration level, and an electronic control unit including computing means (70) for receiving the different information. The computing means (70) are adapted in order to obtain a vehicle acceleration level that corresponds to the acceleration level desired by the driver. The device further includes means for providing information on the vehicle inclination.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: September 17, 2013
    Assignees: Peugeot Citroen Automobiles SA, Robert Bosch GmbH
    Inventors: Emmanuel Charpin, Philippe Blaise, Damien Joucgnoux
  • Patent number: 8538644
    Abstract: A minimum torque module selectively determines a first minimum propulsion torque based on second and third minimum propulsion torques when a torque converter clutch is in unlocked and locked states, respectively. A zero pedal torque module selectively sets a zero pedal torque equal to the first minimum propulsion torque. A pedal request module determines a pedal torque request based on an accelerator pedal position, a vehicle speed, and the zero pedal torque. A driver request module determines a driver axle torque request based on the pedal torque request. A shaping module selectively shapes the driver axle torque request into a shaped driver axle torque request. A conversion module converts the first minimum propulsion torque into a minimum axle torque. A final driver request module sets a final driver axle torque request equal to a greater of the shaped driver axle torque request and the minimum axle torque.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: September 17, 2013
    Inventors: Christopher E. Whitney, Robert C. Simon, Jr., William L. Aldrich, III, Jun Lu, Birendra P. Bhattarai, Adam J Heisel, Ning Jin
  • 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: 8527168
    Abstract: A method for ascertaining a rotational speed parameter for determining a setpoint torque for driving a drivetrain. The drivetrain comprises a first and at least one second drive assembly for driving a hybrid vehicle. The first drive assembly can be coupled to the drivetrain by means of a clutch. The second drive assembly is mechanically coupled to the drivetrain. When the hybrid vehicle is being driven by means of at least the first drive assembly, the rotational speed parameter corresponds to the value of a shaft rotational speed. When the hybrid vehicle is being driven only by means of the second drive assembly, the rotational speed parameter corresponds to the value of a determined rotational speed.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: September 3, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Alexander Maass, Christian Vienken, Manfred Hellmann, Kai Moegle
  • Patent number: 8494748
    Abstract: The present invention provides a method for controlling engine torque in a hybrid vehicle, in which a point of time when an intake cam is activated is determined such that an engine demand torque is controlled to a level at which system efficiency is maximized within a limited engine output range before activation of the intake cam and the engine demand torque is controlled to a level at which the system efficiency is maximized after activation of the intake cam.
    Type: Grant
    Filed: October 23, 2008
    Date of Patent: July 23, 2013
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Young Dae Lee
  • Patent number: 8494733
    Abstract: A prime mover rotation speed control system for hydraulically driven vehicle includes: a hydraulic pump driven by a prime mover; a hydraulic motor for traveling driven with pressure oil supplied from the hydraulic pump; an operation member that outputs a travel command in accordance with an amount of operation by the operation member; a flow control device that controls one of a flow of the pressure oil from the hydraulic pump to the hydraulic motor and a flow rate of the pressure oil discharged from the hydraulic motor, based on the travel command that is output in accordance with the amount of operation by the operation member; a target rotation number outputting device that outputs a target rotation number of the prime mover based on a command; a rotation number control device that controls a rotation number of the prime mover to be the target rotation number; a vehicle speed detection device that detects a vehicle speed; and a vehicle speed calculation device that calculates a target vehicle speed in acco
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: July 23, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Katsuaki Kodaka, Hidetoshi Satake, Youichi Kowatari, Yuuki Gotou, Kazuhiro Ichimura
  • Patent number: 8489304
    Abstract: A torque distribution control apparatus for a four-wheel drive vehicle includes a torque distribution controller configured to control a sub-driving-wheel distribution torque to be transmitted to right and left sub-driving wheels via right and left torque distribution clutches in accordance with a target distribution torque. A driving-torque calculator is configured to calculate a driving torque output from a driving source. A target-distribution-torque calculator is configured to calculate the target distribution torque to be distributed to the sub-driving wheels in accordance with the driving torque. A target-distribution-torque correction device is configured to correct the target distribution torque to increase when the target distribution torque is lower than or equal to a first threshold value and an increase rate of the target distribution torque is higher than or equal to a second threshold value.
    Type: Grant
    Filed: June 27, 2010
    Date of Patent: July 16, 2013
    Assignee: Honda Motor Co., Ltd.
    Inventors: Masatoshi Noguchi, Yusuke Sakaguchi
  • 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
  • Patent number: 8463498
    Abstract: A method for controlling the side slip angle of a rear-wheel drive vehicle when turning; the control method provides for the steps of: detecting the position of an accelerator control which is displaced along a predetermined stroke; using a first initial part of the stroke of the accelerator control for directly controlling the generation of the drive torque so that the generated drive torque depends on the position of the accelerator control; and using a second final part of the stroke of the accelerator control to directly control a side slip angle of the vehicle when turning so that the side slip angle depends on the position of the accelerator control.
    Type: Grant
    Filed: August 28, 2008
    Date of Patent: June 11, 2013
    Assignee: Ferrari S.p.A.
    Inventors: Amedeo Visconti, Martino Cavanna
  • Patent number: 8457825
    Abstract: A powertrain system includes an electric machine mechanically coupled to an internal combustion engine mechanically coupled to a transmission. A method for operating the powertrain system includes determining an engine stall threshold rate during engine operation in a low load condition. A time-rate change in an accessory load is controlled by the electric machine operating in an electric power generating mode in response to the engine stall threshold rate during the engine operation in the low load condition.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: June 4, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Michael D Haggerty, Sean W McGrogan, Adam J Heisel
  • Publication number: 20130138318
    Abstract: The vehicle described herein employs a mu logic module. The mu logic module monitors vehicle operating conditions, and based on those operating conditions determines a road surface mu in response to a wheel slip event. The road surface mu is then used to determine a drive force to minimize or control the wheel slip event. The mu logic module continually monitors and adjusts the drive force provided to at least one of the wheels to maximize the applied drive force, while stabilizing and controlling wheel slip events to ensure safe operation of a vehicle.
    Type: Application
    Filed: November 28, 2011
    Publication date: May 30, 2013
    Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventor: Jordan Choby
  • Patent number: 8447437
    Abstract: An assistant driving system with video recognition includes a camera array capturing environment images for the environment around the vehicle, an image recognition unit identifying environment objects and their image, location, color, speed and direction from the environment images, an environment monitor and control unit receiving the information generated by the image recognition unit and creating the rebuild environment information for the vicinity of the vehicle as well as judging the space relationship between the vehicle and the environment objects to generate the warning information, a video recognition display unit showing a single image for the rebuild environment information, a vehicle warning unit performing the processes corresponding to the warning information, a vehicle driving unit generating the driving control command based on the rebuild environment information, and a vehicle controlling unit receiving the driving control command to control the throttle, brake or steering wheel of the vehic
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: May 21, 2013
    Inventor: Yan-Hong Chiang
  • Patent number: 8442699
    Abstract: An integrated control system includes a main control system controlling a driving system, a main control system controlling a brake system, and a main control system controlling a steering system, an adviser unit generating and providing information to be used at each control system based on environmental information around the vehicle or information related to a driver, an agent unit generating and providing information to be used at each of the main control systems to cause the vehicle to realize a predetermined behavior, and a supporter unit generating and providing information to be used at each of the main control systems based on the current dynamic state of the vehicle.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: May 14, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideki Takamatsu, Masanori Hirose, Hiroshi Mizuno, Yoshiyuki Hashimoto, Hirotada Otake
  • Patent number: 8437927
    Abstract: An engine control system includes a combustion torque determination module, a friction torque determination module, and a control module. The combustion torque determination module determines a combustion torque of an engine based on pressure inside a cylinder of the engine during an engine cycle. The friction torque determination module determines friction torque of the engine based on the combustion torque, acceleration of an engine crankshaft, effective inertia of the engine crankshaft, and a pumping loss in the cylinder during the engine cycle. The control module adjusts an operating parameter of the engine based on the friction torque.
    Type: Grant
    Filed: September 1, 2009
    Date of Patent: May 7, 2013
    Inventors: Daniel G. Brennan, Robert Douglas Shafto
  • Publication number: 20130103282
    Abstract: The present disclosure provides a system and a method of controlling motor vehicle operation. The method may include: setting a creep torque as a minimum torque; setting a maximum torque as a sum of a maximum torque of an engine and a maximum torque of a motor; monitoring an acceleration pedal position sensor (APS) value; calculating a demand torque according to the APS value; setting a filter coefficient for filtering the demand torque according to an operating condition of the vehicle; and filtering the demand torque by means of the filter coefficient.
    Type: Application
    Filed: October 24, 2012
    Publication date: April 25, 2013
    Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANY
    Inventors: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
  • Patent number: 8428836
    Abstract: An engine control system comprises a limit determination module and a torque control module. The limit determination module selectively varies a torque limit based on a steering angle. The torque control module selectively limits torque output by an engine to the torque limit.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: April 23, 2013
    Inventors: Steven J. Andrasko, Brent T. Deep, Scott M. Neher, Jason P Hafer
  • Patent number: 8428833
    Abstract: An engine control device detects the state of work of a working vehicle such as a construction machine or the like, and controls the power output capacity of an engine automatically. A determination is made as to whether excavation or uphill traveling is being performed, based upon the detection signals from a hydraulic oil pressure detector for a hydraulic cylinder of an arm, detectors for arm and bucket operation commands, a shift operation detector for a transmission, a pitch angle detector for the vehicle body, a traveling acceleration detector, and an accelerator opening degree detector. When the result of this determination is that excavation or uphill traveling is being performed, the engine is controlled to operate at a high power capacity, while at other times it is controlled to operate at a low power output capacity.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: April 23, 2013
    Assignee: Komatsu Ltd.
    Inventor: Eiji Toda
  • Patent number: 8423253
    Abstract: A torque applying device is provided for applying a driving torque to at least a pair of wheels, and a torque restraining device is provided for restraining the torque created on the wheels to be applied with the torque by the torque applying device. A friction braking device is provided for applying a braking torque to each wheel in response to operation of a brake pedal. An automatic braking control device automatically actuates the friction braking device independently of operation of the brake pedal, to apply the braking torque to each wheel. And, a torque restraining cancellation device is provided for cancelling the torque restraining operation for a time period determined in response to a vehicle speed decreasing state, after a condition for initiating the automatic braking control was fulfilled.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: April 16, 2013
    Assignee: Advics Co., Ltd.
    Inventors: Yukio Mori, Koicho Kokubo
  • Patent number: 8412395
    Abstract: A controller for detecting abnormality of a motor control ECU of an electric vehicle 50 has a travel control unit 1 for calculating a target driving torque for an electric motor 3, and a motor control unit 2 for calculating a final indication torque obtained by correcting the target driving torque from the travel control unit 1, and supplying electric power according to the final indication torque to the motor 3. The travel control unit 1 includes a target driving torque calculating unit 21 for calculating the target driving torque, a final indication torque confirmation value calculating unit 23 for calculating a final indication torque confirmation value based on the calculated target driving torque, and an abnormality determining unit 24 for determining the abnormality of the motor control unit 2 based on a result of comparison between the final indication torque and the final indication torque confirmation value.
    Type: Grant
    Filed: March 10, 2008
    Date of Patent: April 2, 2013
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventor: Yoshiaki Sano
  • Publication number: 20130073166
    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: Application
    Filed: August 15, 2012
    Publication date: March 21, 2013
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Willem SOLLART
  • Patent number: 8392046
    Abstract: An internal combustion engine is controlled by a plurality of partially reliability-relevant functional units. Every reliability-relevant functional unit comprises at least one functional module and at least one monitoring module. The monitoring module is separate from the functional module associated therewith and monitors the functioning of the functional module. The control device also comprises a higher order monitoring functional group. The monitoring module has an entry point for communication with the higher order monitoring functional group. When an error is detected, the monitoring module signals the error to the higher order monitoring functional group using the entry point.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: March 5, 2013
    Assignee: Continental Automotive GmbH
    Inventors: Dirk Geyer, Marco Kick, Markus Kraus
  • Patent number: 8392090
    Abstract: A hybrid electronic control unit sets a target vehicle speed for constant-speed driving based on setting operation of an auto cruise switch by a driver. When the target vehicle speed is set, the required torque is set such that the vehicle speed detected by a vehicle speed sensor becomes the target vehicle speed. When the required torque is set, a constant-speed driving torque map, indicating the required torque with respect to a torque command value by accelerator operation or brake operation by the driver using the required torque, and a positive maximum torque and a negative maximum torque, which the vehicle can output, is set. Further, the required torque changes using the constant-speed driving torque map according to the torque command value. In the hybrid electronic control unit, by increasing followability of torque change when changing the vehicle speed from the constant-speed driving, controllability is improved and drivability is improved.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: March 5, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukari Okamura, Koji Taguchi
  • Patent number: 8386140
    Abstract: A control device controls an input coupled to a drive force source including a rotary electric machine and an internal combustion engine, an output coupled to wheels, and a speed change mechanism that transfers rotation of the input to the output with a speed of the rotation changed in accordance with a speed ratio of a shift speed selected from a plurality of shift speeds. When switching between the shift speeds, a rotation-varying torque value is calculated, the rotary electric machine outputs torque based on the rotation-varying torque value, and when an absolute value of the torque that the rotary electric machine outputs will become more than a predetermined threshold, both the rotary electric machine and the internal combustion engine are caused to output torque corresponding to the rotation-varying torque value such that the output torque of the rotary electric machine becomes equal to or less than the predetermined threshold.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: February 26, 2013
    Assignee: Aisin AW Co., Ltd.
    Inventors: Kohei Tsuda, Yoichi Tajima, Yomei Hakumura, Hiroaki Kioka
  • Patent number: 8380381
    Abstract: An electric vehicle includes a pitching state quantity detector for detecting quantity of a pitching-motion of the vehicle, a vehicle weight determiner, a pitching target quantity calculator for calculating a target quantity of a pitching motion at least from the determined vehicle weight, and a torque correction calculator for increasing/reducing a driving torque output, according to a particular differential between the detected pitching-motion state quantity and the calculated target quantity.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: February 19, 2013
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Masanori Ichinose, Tomohiko Yasuda, Takayuki Sato
  • Patent number: 8370040
    Abstract: A vehicle travel control device has a engine that controls an engine based on a driving target controlled variable; a brake that controls a brake device based on a braking target controlled variable; and a automatic travel control that calculates the driving target controlled variable and/or braking target controlled variable so that a vehicle speed of a vehicle becomes a target vehicle speed, and outputs the driving target controlled variable to the engine and the braking target controlled variable to the brake, the vehicle travel control device being configured such that, upon detection of an acceleration operation during the vehicle travel control, the automatic travel control calculates a target vehicle speed for vehicle travel control by the brake device, so that the target vehicle speed becomes higher than a current vehicle speed of the vehicle.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: February 5, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, Advics Co., Ltd.
    Inventors: Gen Inoue, Yasuhito Ishida
  • Patent number: 8364373
    Abstract: A method of operating a hybrid powertrain having an internal combustion engine monitors a throttle intake pressure and calculates a first torque capacity from a pressure model using the throttle intake pressure as an input. The method determines a maximum expected air mass from the monitored throttle intake pressure and calculates a second torque capacity from an air mass model using the maximum expected air mass volume as an input. The method calculates a final torque capacity as a function of the first torque capacity and the second torque capacity, and sends the final torque capacity to the hybrid control processor. An engine control module receives a torque request calculated as a function of the final torque capacity. A manifold pressure request is calculated as a function of the torque request, and a throttle is actuated as a function of the manifold pressure request.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: January 29, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Christopher E. Whitney, Jeffrey M. Kaiser, Dennis A. Light, Anthony H. Heap, Honghao Tan