Control Of Engine Torque Patents (Class 701/84)
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Patent number: 8655563Abstract: 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: GrantFiled: February 2, 2006Date of Patent: February 18, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yoshinori Maeda, Kazuya Okumura, Michitaka Tsuchida, Yoshio Uragami, Kensuke Yoshizue, Satoshi Ando, Koji Sugiyama
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Publication number: 20140046568Abstract: 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: ApplicationFiled: April 21, 2011Publication date: February 13, 2014Inventors: Masahiro Kato, Eiji Muramatsu, Kazutoshi Kitano, Chihiro Kawabata, Kazunobu Hashimoto, Yoshikazu Takeuchi
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Patent number: 8649945Abstract: 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: GrantFiled: May 15, 2012Date of Patent: February 11, 2014Assignee: Komatsu Ltd.Inventor: Atsushi Shirao
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Patent number: 8639402Abstract: 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: GrantFiled: November 4, 2010Date of Patent: January 28, 2014Assignee: Caterpillar Inc.Inventors: William J. Tate, Alexander C. Crosman
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Publication number: 20140025274Abstract: 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: ApplicationFiled: September 23, 2013Publication date: January 23, 2014Applicant: TEXTRON INC.Inventors: Christian Stanton Carver BRYANT, Bryan E. HOLBY, Lynn G. WESTBROOK, Brian MELKA
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Patent number: 8635000Abstract: 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: GrantFiled: November 14, 2012Date of Patent: January 21, 2014Assignee: Caterpillar Inc.Inventors: Matthew L. Hendrickson, Alexander C. Crosman, III, Bo Xie, Bradley S. Bailey
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Patent number: 8635001Abstract: 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: GrantFiled: October 21, 2010Date of Patent: January 21, 2014Assignee: Ford Global Technologies, LLCInventors: Jeff Doering, Brad Riedle, Rob Ciarrocchi, Scott Redmon, Hank Kwong, William Eckenrode, Frederick Page
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Patent number: 8626404Abstract: 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: GrantFiled: November 19, 2010Date of Patent: January 7, 2014Assignee: Caterpillar Inc.Inventors: Norval P. Thomson, Gregory Durst, Martin Lehman, Shane McBride, Daniel P. Sergison
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Patent number: 8612102Abstract: 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: GrantFiled: May 17, 2011Date of Patent: December 17, 2013Assignee: Komatsu Ltd.Inventors: Kouji Ohhigashi, Mitsuhiko Kamado, Takao Suehiro
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Patent number: 8606478Abstract: 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: GrantFiled: December 12, 2007Date of Patent: December 10, 2013Assignee: Volvo Lastvagnar ABInventors: Jens Samsioe, Peter Lingman
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Patent number: 8606441Abstract: 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: GrantFiled: September 5, 2007Date of Patent: December 10, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventor: Kiyoshiro Ueoka
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Patent number: 8598977Abstract: 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: GrantFiled: April 15, 2011Date of Patent: December 3, 2013Assignee: Tiny Towne International LLCInventors: Pierre Maalouf, Georges Moussa
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Patent number: 8594864Abstract: 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: GrantFiled: August 24, 2011Date of Patent: November 26, 2013Assignee: Sikorsky Aircraft CorporationInventors: Aaron L. Greenfield, Alex Faynberg, Vineet Sahasrabudhe, John Rucci, Glen Knaust
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Patent number: 8594901Abstract: 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: GrantFiled: March 11, 2013Date of Patent: November 26, 2013Assignees: Hyundai Motor Company, Kia Motors Corp.Inventors: Young Min Yoon, Sung Hyun Cho, Ho Young Lee, Seung Sam Baek
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Patent number: 8589047Abstract: 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: GrantFiled: August 4, 2011Date of Patent: November 19, 2013Assignee: GM Global Technology Operations LLCInventor: Torsten Mueller
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Patent number: 8577569Abstract: 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: GrantFiled: September 10, 2010Date of Patent: November 5, 2013Assignee: Hitachi Automotive Systems, Ltd.Inventor: Nobuyuki Ohtsu
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Patent number: 8571774Abstract: 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: GrantFiled: November 26, 2012Date of Patent: October 29, 2013Assignee: Caterpillar Inc.Inventors: Kristofor Lee Dahl, Brian Douglas Hoff, Richard George Ingram, Michael Anthony Spielman, Jr., Benjamin B. Schmuck, Alberto Martinez, Jr., Yaang Zhao
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Patent number: 8565995Abstract: 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: GrantFiled: October 2, 2008Date of Patent: October 22, 2013Assignee: Robert Bosch GmbHInventors: Stefan Kueperkoch, Frank Leibeling, Jasper-Jeen Jeninga
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Patent number: 8554441Abstract: 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: GrantFiled: March 13, 2013Date of Patent: October 8, 2013Assignee: e-AAM Driveline Systems ABInventors: Martin Johansson, Matilda Hallnor
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Publication number: 20130261925Abstract: 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: ApplicationFiled: March 15, 2013Publication date: October 3, 2013Applicant: HONDA MOTOR CO., LTD.Inventors: Fuyuki KOBAYASHI, Yoichiro FUKAO, Yohei MARUYAMA, Tatsuya ITO
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Publication number: 20130245911Abstract: 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: ApplicationFiled: February 27, 2013Publication date: September 19, 2013Applicant: HONDA MOTOR CO., LTD.Inventors: Kenji NAKAJIMA, Youji YASUOKA, Masafumi AMANO, Takayuki YAMASAKI, Kazuhiro NAKANO
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Patent number: 8538652Abstract: 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: GrantFiled: March 7, 2008Date of Patent: September 17, 2013Assignees: Peugeot Citroen Automobiles SA, Robert Bosch GmbHInventors: Emmanuel Charpin, Philippe Blaise, Damien Joucgnoux
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Patent number: 8538644Abstract: 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: GrantFiled: April 20, 2010Date of Patent: September 17, 2013Inventors: Christopher E. Whitney, Robert C. Simon, Jr., William L. Aldrich, III, Jun Lu, Birendra P. Bhattarai, Adam J Heisel, Ning Jin
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Patent number: 8538651Abstract: 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: GrantFiled: April 11, 2006Date of Patent: September 17, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Norimi Asahara, Katsumi Kono
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Patent number: 8527168Abstract: 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: GrantFiled: November 9, 2012Date of Patent: September 3, 2013Assignee: Robert Bosch GmbHInventors: Alexander Maass, Christian Vienken, Manfred Hellmann, Kai Moegle
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Patent number: 8494748Abstract: 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: GrantFiled: October 23, 2008Date of Patent: July 23, 2013Assignees: Hyundai Motor Company, Kia Motors CorporationInventor: Young Dae Lee
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Patent number: 8494733Abstract: 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 accoType: GrantFiled: February 28, 2008Date of Patent: July 23, 2013Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Katsuaki Kodaka, Hidetoshi Satake, Youichi Kowatari, Yuuki Gotou, Kazuhiro Ichimura
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Patent number: 8489304Abstract: 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: GrantFiled: June 27, 2010Date of Patent: July 16, 2013Assignee: Honda Motor Co., Ltd.Inventors: Masatoshi Noguchi, Yusuke Sakaguchi
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Patent number: 8489299Abstract: 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: GrantFiled: June 3, 2004Date of Patent: July 16, 2013Assignee: Torotrak (Development) LimitedInventor: Stephen William Murray
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Patent number: 8489303Abstract: 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: GrantFiled: May 19, 2010Date of Patent: July 16, 2013Inventors: Andrew W. Phillips, David S. Mathews
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Patent number: 8478470Abstract: 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: GrantFiled: May 31, 2012Date of Patent: July 2, 2013Assignee: Caterpillar Inc.Inventors: Matthew D. Meads, Keith A. Leisinger, Rajeswari Addepalli
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Patent number: 8473139Abstract: 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: GrantFiled: December 19, 2012Date of Patent: June 25, 2013Assignee: Aisin Seiki Kabushiki KaishaInventor: Suguru Futamura
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Patent number: 8463498Abstract: 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: GrantFiled: August 28, 2008Date of Patent: June 11, 2013Assignee: Ferrari S.p.A.Inventors: Amedeo Visconti, Martino Cavanna
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Patent number: 8457825Abstract: 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: GrantFiled: June 2, 2011Date of Patent: June 4, 2013Assignee: GM Global Technology Operations LLCInventors: Michael D Haggerty, Sean W McGrogan, Adam J Heisel
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Publication number: 20130138318Abstract: 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: ApplicationFiled: November 28, 2011Publication date: May 30, 2013Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.Inventor: Jordan Choby
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Patent number: 8447437Abstract: 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 vehicType: GrantFiled: November 22, 2010Date of Patent: May 21, 2013Inventor: Yan-Hong Chiang
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Patent number: 8442699Abstract: 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: GrantFiled: November 30, 2004Date of Patent: May 14, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hideki Takamatsu, Masanori Hirose, Hiroshi Mizuno, Yoshiyuki Hashimoto, Hirotada Otake
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Patent number: 8437927Abstract: 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: GrantFiled: September 1, 2009Date of Patent: May 7, 2013Inventors: Daniel G. Brennan, Robert Douglas Shafto
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Publication number: 20130103282Abstract: 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: ApplicationFiled: October 24, 2012Publication date: April 25, 2013Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANYInventors: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
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Patent number: 8428836Abstract: 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: GrantFiled: September 16, 2009Date of Patent: April 23, 2013Inventors: Steven J. Andrasko, Brent T. Deep, Scott M. Neher, Jason P Hafer
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Patent number: 8428833Abstract: 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: GrantFiled: June 2, 2011Date of Patent: April 23, 2013Assignee: Komatsu Ltd.Inventor: Eiji Toda
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Patent number: 8423253Abstract: 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: GrantFiled: September 22, 2006Date of Patent: April 16, 2013Assignee: Advics Co., Ltd.Inventors: Yukio Mori, Koicho Kokubo
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Patent number: 8412395Abstract: 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: GrantFiled: March 10, 2008Date of Patent: April 2, 2013Assignee: Mitsubishi Jidosha Kogyo Kabushiki KaishaInventor: Yoshiaki Sano
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Publication number: 20130073166Abstract: 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: ApplicationFiled: August 15, 2012Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventor: Willem SOLLART
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Patent number: 8392046Abstract: 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: GrantFiled: December 28, 2005Date of Patent: March 5, 2013Assignee: Continental Automotive GmbHInventors: Dirk Geyer, Marco Kick, Markus Kraus
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Patent number: 8392090Abstract: 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: GrantFiled: July 25, 2008Date of Patent: March 5, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yukari Okamura, Koji Taguchi
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Patent number: 8386140Abstract: 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: GrantFiled: January 13, 2012Date of Patent: February 26, 2013Assignee: Aisin AW Co., Ltd.Inventors: Kohei Tsuda, Yoichi Tajima, Yomei Hakumura, Hiroaki Kioka
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Patent number: 8380381Abstract: 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: GrantFiled: May 31, 2012Date of Patent: February 19, 2013Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Masanori Ichinose, Tomohiko Yasuda, Takayuki Sato
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Patent number: 8370040Abstract: 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: GrantFiled: September 4, 2008Date of Patent: February 5, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Advics Co., Ltd.Inventors: Gen Inoue, Yasuhito Ishida
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Patent number: 8364373Abstract: 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: GrantFiled: August 30, 2010Date of Patent: January 29, 2013Assignee: GM Global Technology Operations LLCInventors: Christopher E. Whitney, Jeffrey M. Kaiser, Dennis A. Light, Anthony H. Heap, Honghao Tan