Having Gradient Responsive Control To Suppress Hunting, Overshooting, Or Undershooting Patents (Class 701/94)
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Patent number: 11807236Abstract: A Coordinating Apparatus and Method is provided between Adaptive Cruise Control (ACC) and Predictive Cruise Control (PCC). The ACC system is configured to provide a target acceleration or deceleration based on maintaining a target distance from vehicles ahead. The PCC system is configured to provide a target acceleration or deceleration based on upcoming changes in elevation and maximizing fuel economy. The coordinating apparatus communicates with the ACC system and with the PCC system, and applies the lesser acceleration or greater deceleration between the ACC target acceleration or deceleration and the PCC target acceleration or deceleration. The apparatus and method may apply the target acceleration or deceleration by way of a vehicle speed control apparatus, such as a vehicle engine controller.Type: GrantFiled: June 22, 2021Date of Patent: November 7, 2023Assignee: International Engine Intellectual Property Company, LLCInventors: Chaozhe He, Brendan Chan
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Patent number: 11602998Abstract: An electrified vehicle, system, and method include an electric machine, a traction battery coupled to the electric machine, and a controller programmed to control wheel slip to provide high wheel slip to traverse deformable terrain, such as sand or loose soil, and lower wheel slip to avoid excessive soil removal beneath the wheels after detecting a vertical acceleration or heave event, such as after landing when driving over a jump or bump. When vehicle vertical acceleration exceeds a first threshold, and a ratio of a wheel angular acceleration to vehicle longitudinal acceleration exceeds a second threshold, the electric machine is controlled to limit wheel slip to a lower value that provides sufficient tractive force to maintain some forward motion. Otherwise, the electric machine is controlled to limit wheel slip to a higher value to accommodate higher vehicle speeds over the deformable terrain.Type: GrantFiled: January 5, 2021Date of Patent: March 14, 2023Assignee: Ford Global Technologies, LLCInventors: Jonathan Sullivan, Kevin Mackenzie
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Patent number: 11541857Abstract: In the case that the road surface is determined to have different friction coefficients on the left and right wheels, this braking control device performs antiskid control for adjusting the increase slope of front wheel braking torque on the side with the higher friction coefficient. A steering angle sensor detects the steering angle, and a yaw rate sensor detects the yaw rate. The device calculates a reference turning amount on the basis of the steering angle, calculates an actual turning amount on the basis of the yaw rate, and sets the increase slope on the basis of the deviation between the reference turning amount and the actual turning amount. Also, if this deviation becomes larger, a correction is made such that the set increase slope becomes smaller. Further, if the deviation becomes smaller, a correction is made such that the set increase slope becomes larger.Type: GrantFiled: November 29, 2018Date of Patent: January 3, 2023Assignee: ADVICS CO., LTD.Inventors: Masato Terasaka, Chisa Kitahara
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Patent number: 11492010Abstract: A vehicle includes a sensor circuit configured to detect an obstacle in a first region which is located on the predetermined traveling route and in a second region which is adjacent to the first region on the predetermined traveling route, the second region being farther than the first region. The vehicle enters the first region in a case where: there is no obstacle in the first region; and there is no obstacle in the second region, and does not enter the first region and stops before the first region in a case where: there is no obstacle in the first region; and there is an obstacle in the second region.Type: GrantFiled: September 21, 2020Date of Patent: November 8, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Kazuya Furukawa
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Patent number: 11285950Abstract: A vehicle includes a gear selector that selects between a drive and reverse gear. The gear selected defines an intended travel direction. The vehicle also includes a controller that, responsive to user input, activates a one-pedal drive system, and responsive to detecting the vehicle is rolling back for more than a predefined time period, a feedforward road grade compensation torque being opposite to the intended travel direction and having a magnitude greater than a feedforward threshold, and a feedback data noise compensation torque in the intended travel direction having a magnitude greater than a feedback threshold, reduces the maximum magnitude of the feedforward road grade compensation torque to a predefined value throughout a current key cycle for the vehicle.Type: GrantFiled: September 28, 2020Date of Patent: March 29, 2022Assignee: Ford Global Technologies, LLCInventors: Bryan Michael Bolger, Sergey Gennadievich Semenov
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Patent number: 11279331Abstract: A braking control device includes an actuator, a controller, a steering angle sensor, and a yaw rate sensor. The controller calculates a reference turning amount, an actual turning amount, an understeer index, sets to a non-adjustment region in which the increase slope is not decreased when the understeer index is smaller than or equal to a first threshold value, sets to an adjustment region in which the increase slope is decreased when the understeer index is greater than or equal to a second threshold value greater than the first threshold value, and sets to a transition region in which the increase slope is decreased when the understeer index is transitioned from the non-adjustment region and the increase slope is not decreased when the understeer index is transitioned from the adjustment region when the understeer index is greater than the first threshold value and smaller than the second threshold value.Type: GrantFiled: November 29, 2018Date of Patent: March 22, 2022Assignee: ADVICS CO., LTD.Inventors: Masato Terasaka, Chisa Kitahara
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Patent number: 11042757Abstract: An image processing device mounted to a vehicle includes a motion feature extracting unit is configured to create motion information indicative of a motion of an observation target from a captured image including the observation target around the vehicle, a distance feature extracting unit is configured to calculate a distance from the vehicle to the observation target based on the captured image, and a recognition unit is configured to execute a recognition process of the observation target based on process results of the motion feature extracting unit and the distance feature extracting unit. The motion feature extracting unit and the distance feature extracting unit have respective operation processing amounts changed based on a predetermined vehicle state.Type: GrantFiled: July 24, 2017Date of Patent: June 22, 2021Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Keisuke Inata, Satoshi Sano, Shinichi Nonaka
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Patent number: 10668823Abstract: A driver assistance system may be a vehicle control system configured to perform a driver assistance operation, such as implementing cruise control or performing an automated driving control operation. The control system may be configured to perform a driver assistance operation which includes at least one step which conserves energy stored in at least one battery. The control system may conserve energy by controlling a speed or following distance of a vehicle based on road parameter, such as an uphill grade or downhill grade.Type: GrantFiled: September 29, 2016Date of Patent: June 2, 2020Assignee: NIO USA, Inc.Inventors: Robert Herb, Thomas Fritz
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Patent number: 10501061Abstract: A method of controlling the braking of a vehicle descending a slope. The method includes receiving one or more electrical signals each indicative of a value of a respective vehicle-related parameter. The method further includes detecting that the vehicle is descending a slope based on the value(s) of one or more of the vehicle-related parameters. The method still further includes automatically modifying an amount of brake torque being applied to at least certain of the wheels of the vehicle in response to the detection of the vehicle descending a slope by increasing the amount of brake torque being applied to one or more trailing wheels of the vehicle, and decreasing the amount of brake torque being applied to one or more leading wheels of the vehicle.Type: GrantFiled: October 21, 2015Date of Patent: December 10, 2019Assignee: Jaguar Land Rover LimitedInventors: Simon Owen, Karl Richards
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Patent number: 10162366Abstract: The present invention relates to a method and system for enabling vehicles to closely follow one another through partial automation. Following closely behind another vehicle can have significant fuel savings benefits, but is unsafe when done manually by the driver. By directly commanding the engine torque and braking of the following vehicle while controlling the gap between vehicles using a sensor system, and additionally using a communication link between vehicles that allows information about vehicle actions, such as braking events, to be anticipated by the following vehicle, a Semi-Autonomous Vehicular Convoying System that enables vehicles to follow closely together in a safe, efficient and convenient manner may be achieved.Type: GrantFiled: July 5, 2018Date of Patent: December 25, 2018Assignee: Peloton Technology, Inc.Inventors: Joshua P. Switkes, Joseph Christian Gerdes
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Patent number: 10160431Abstract: A method of controlling the deceleration of a vehicle to account for an increase in friction in the vehicle brake system as the vehicle decelerates. The method comprises receiving a signal indicative of a value of the speed of the vehicle and a signal indicative of a value of a brake pressure in the vehicle brake system. The method further comprises comparing the vehicle speed value and the brake pressure value to respective thresholds. The method still further comprises increasing the drive torque applied to one or more wheels of the vehicle when the vehicle speed value falls below the threshold to which it was compared and the brake pressure value exceeds the threshold to which it was compared, such that the increased drive torque acts against the braking of the vehicle as the vehicle is decelerated to a stop.Type: GrantFiled: July 22, 2015Date of Patent: December 25, 2018Assignee: Jaguar Land Rover LimitedInventors: James Kelly, David Armstrong
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Patent number: 9527510Abstract: Provided is a driving force control apparatus (10) configured to control driving forces applied to four wheels by controlling a driving force application apparatus (in-wheel motors (16FL to 16RR) and friction braking apparatus (24)) configured to apply driving forces to front left and right wheels (12FL and 12FR) and rear left and right wheels (12RL and 12RR) independently. The driving force control apparatus (10) is configured to: calculate vehicle body speeds Vj at positions of the four wheels, vertical loads Fzj of the four wheels, and a driving force Fx required by a driver (S30 to S50); calculate, based on those values, target driving forces Fxj for the four wheels to set tire sliding vectors of the four wheels to be the same (S60); and control the driving force application apparatus such that the driving forces of the four wheels are equal to corresponding target driving forces, respectively (S70).Type: GrantFiled: May 2, 2016Date of Patent: December 27, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Etsuo Katsuyama, Takao Kobayashi, Hideki Sugiura
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Patent number: 9046885Abstract: A method for ascertaining functional parameters for a control unit and to a control unit in which the provided method is carried out. The control unit is provided for controlling a technical system wherein, in the method, at least one target variable on a system response is specified and a variation of the functional parameters is carried out, from a response received to the functional parameters, a valuation being carried out of the set functional parameters while taking into account the at least one specified target variable.Type: GrantFiled: December 2, 2010Date of Patent: June 2, 2015Assignee: ROBERT BOSCH GMBHInventors: Martin Johannaber, Marcus Boumans, Markus Bossler, Maximilian Reger
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Patent number: 9002600Abstract: An example method of operation comprises, selectively shutting down engine operation responsive to operating conditions and without receiving an engine shutdown request from the operator, maintaining the automatic transmission in gear during the shutdown, and during an engine restart from the shutdown condition, and with the transmission in gear, transmitting reduced torque to the transmission. For example, slippage of a forward clutch of the transmission may be used to enable the transmission to remain in gear, yet reduce torque transmitted to the vehicle wheels.Type: GrantFiled: January 2, 2009Date of Patent: April 7, 2015Assignee: Ford Global Technologies, LLCInventors: Alex O'Connor Gibson, Peter John Grutter, Roger Lyle Huffmaster, Felix Nedorezov
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Patent number: 8996274Abstract: Vehicle control includes: acquiring running information of a preceding vehicle that runs ahead of a host vehicle; controlling a running state of the host vehicle on the basis of the acquired running information; acquiring deceleration jerk information of the preceding vehicle; and changing a deceleration start timing, at which the host vehicle is decelerated in response to deceleration of the preceding vehicle, on the basis of the deceleration jerk information of the preceding vehicle. Alternatively, vehicle control includes: acquiring deceleration jerk information of a preceding vehicle that runs ahead of a host vehicle; and changing an inter-vehicle time or inter-vehicle distance between the preceding vehicle and the host vehicle on the basis of the deceleration jerk information of the preceding vehicle.Type: GrantFiled: August 10, 2011Date of Patent: March 31, 2015Assignee: Toyota Jidosha Kabushiki KaishaInventor: Mitsuhisa Shida
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Patent number: 8954255Abstract: Aspects of the present disclosure are directed towards hysteresis engaged vehicle cruise control apparatuses, and systems and methods that facilitate energy efficiency as a function of external energy obstacles. The method and system includes an adaptable terrain-based speed profile and terrain-based work function for maintaining a vehicle at a desired speed and selected speed range. The speed profile further includes a terrain-based driving preference associated with an identifier that identifies a particular driver and driving profile. Vehicle-related data is generated with regard to energy efficiency obstacles, and vehicle speed is automatically adjusted based on this data to facilitate fuel economy. In certain embodiments, vehicle-related data is sent to a cloud-computing system for processing. In other embodiments, the desired speed and terrain-based speed profile is influenced by user or external inputs.Type: GrantFiled: September 17, 2012Date of Patent: February 10, 2015Inventor: Robert J. Crawford
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Patent number: 8930116Abstract: Vehicle apparatus adjusts a vehicle powertrain of the vehicle in response to a speed setpoint. An optimizer selects a control policy to periodically generate speed adjustments for applying to the speed setpoint to operate at increased efficiency. The control policy is based on a value function providing an optimized solution for a cost model and a transition probability model. The transition probability model corresponds to a driving state defined according to a plurality of dimensions including a time-of-day dimension and a geographic region dimension. The transition probability model and the control policy have inputs based on road grade and speed. The optimizer collects road grade data during routine driving of the vehicle to construct a observed transition probability model and uses divergence between the observed transition probability model and a set of predetermined transition probability models to identify a control policy for use during the routine driving.Type: GrantFiled: February 26, 2013Date of Patent: January 6, 2015Assignees: Ford Global Technologies, LLC, The Regents of the University of MichiganInventors: Dimitar P. Filev, Ilya Kolmanovsky, Kevin McDonough, Steven J. Szwabowski, John O. Michelini, Diana Yanakiev, Mahmoud Abou-Nasr
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Patent number: 8930115Abstract: Vehicle apparatus includes a speed control for adjusting a vehicle powertrain of the vehicle in response to a speed setpoint. A grade estimator determines a road grade of a roadway where the vehicle is traveling. A traffic density estimator determines a density of traffic traveling on the roadway in the vicinity of the vehicle. An optimizer executes a selected control policy to periodically generate speed adjustments for applying to the speed setpoint to operate the vehicle powertrain at increased efficiency. The control policy is based on a value function providing an optimized solution for a cost model responsive to the determined road grade to generate an initial speed offset. The optimizer reduces the initial speed offset in proportion to the determined traffic density to generate the speed adjustments. The system minimizes negative impacts to overall traffic flow as well as any negative contribution to reduced fuel efficiency of surrounding traffic.Type: GrantFiled: February 26, 2013Date of Patent: January 6, 2015Assignee: Ford Global Technologies, LLCInventors: Dimitar P. Filev, John O. Michelini, Steven J. Szwabowski, Diana Yanakiev
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Publication number: 20140343818Abstract: A method for determining a reference value for controlling a vehicle's speed by a vehicle control system is described. The method includes: making a first prediction and a second prediction of the speed along a horizon, the first prediction based on an engine torque that retards the vehicle as compared with a conventional cruise control, and the second prediction based on an engine torque that accelerates the vehicle as compared with the conventional cruise control; comparing the first prediction and second prediction, respectively, with a lower limit value and/or an upper limit value, which delineate a speed range within which the speed is to be maintained; and determining the reference value based on at least one of the respective comparisons and the first prediction and second prediction so that the set speed is within the speed range bounded by the lower and upper limit values.Type: ApplicationFiled: December 22, 2011Publication date: November 20, 2014Inventors: Oskar Johansson, Maria Södergren, Fredrik Roos
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Patent number: 8886437Abstract: A method of controlling an engine in a motor vehicle includes opening a throttle to an increased angle when conditions for fuel cut cycling are met. More specifically, when cruise control is on, the motor vehicle is moving downhill, and the current speed drops below a target speed, the engine control unit may choose to increase the angle of the throttle while maintaining fuel cut. Under other interrupting events, the engine control unit may choose to resume fueling control or reduce the throttle angle.Type: GrantFiled: April 12, 2011Date of Patent: November 11, 2014Assignee: Honda Motor Co., Ltd.Inventors: Michael T. Dickinson, Naomichi Tonokura
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Patent number: 8849539Abstract: A method for determination of speed set-point values vref for a vehicle's control systems, includes determining a horizon from position data and map data of an itinerary made up of route segments with length and gradient characteristics for each segment; calculating threshold values for the gradient of segments according to one or more vehicle-specific values, which threshold values serve as boundaries for assigning segments to various categories; comparing the gradient of each segment with the threshold values and placing each segment within the horizon in a category according to the results of the comparisons; calculating speed set-point values vref for the vehicle's control systems across the horizon according to rules pertaining to the classes in which segments within the horizon are placed; adding an offset voffset to the calculated speed set-point values vref when the vehicle is in a segment which is in a category indicating a steep upgrade or a steep downgrade; regulating the vehicle according to the sType: GrantFiled: May 31, 2010Date of Patent: September 30, 2014Assignee: Scania CV ABInventors: Oskar Johansson, Jörgen Hansson
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Patent number: 8843288Abstract: A system and method of operating a vehicle at a driver selected target speed. The system and method configured to identify a target speed based on a position of a gear shift selector and control engine torque and brake pressure to control the vehicle to operate at the target speed. The system and method is further provides manipulating the engine torque and brake pressure of the vehicle in response to a driver's throttle and brake commands to operate at a speed desired by the driver.Type: GrantFiled: June 24, 2013Date of Patent: September 23, 2014Assignee: Chrysler Group LLCInventors: Zachary C Rogalski, Ivan Roman, Loren M Trotter, Jason Trombley
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Patent number: 8825394Abstract: A system having a user interface which presents map data Dmap. An analysis unit analyzes map data Dmap, determining a quality Q for these map data Dmap which are to be presented. The determination is based on whether the respective map data Dmap are available and/or reliable. The quality Q is presented graphically by a presentation unit. The risk of wrong decisions being taken on the basis of deficient map data Dmap is reduced considerably, since the user can easily decide whether there are reliable map data or not.Type: GrantFiled: July 2, 2012Date of Patent: September 2, 2014Assignee: Scania CV ABInventors: Oskar Johansson, Maria Södergren, Fredrik Roos
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Patent number: 8751126Abstract: An accelerator reaction force control apparatus is provided with an accelerator position detecting device, a reaction force varying device and a threshold value setting device. The reaction force varying device varies a reaction force of the accelerator so as to increase a reaction force of the accelerator by a prescribed increase amount with respect to a base reaction force when the accelerator position is equal to or larger than an accelerator position threshold value. The reaction force varying device also varies a reaction force increase rate at a first increase rate during a first reaction force increase period of the increase of the reaction force, and at a second increase rate during a second reaction force increase period of the increase of the reaction force. The second increase rate is larger during the second reaction force increase period than during the first reaction force increase period.Type: GrantFiled: September 1, 2010Date of Patent: June 10, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Shigeyuki Sakaguchi, Masao Shiomi, Masahiro Omori
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Publication number: 20140156163Abstract: Disclosed herein is an auto cruise downhill control (ADC) method for a vehicle, whereby, when a speed of the vehicle exceeds an auto cruise setting speed, the speed of the vehicle is automatically adjusted to be the auto cruise setting speed by using an engine control unit (ECU) and an electronic stability control (ESC) unit. In other words, when a current vehicle speed exceeds a predetermined value compared to a driver's setting speed for auto cruise, automatic braking activation control is performed by the ESC unit to adjust the speed of the vehicle to be the auto cruise setting speed when the vehicle is operating on a steep decline. Additionally, when a driver makes a steep downward adjustment of the setting speed, automatic braking activation control is performed by the ESC unit to decrease the speed of the vehicle to a downwardly adjusted level at an accelerated rate.Type: ApplicationFiled: April 2, 2013Publication date: June 5, 2014Applicants: HYUNDAI MOTOR COMPANY, MANDO CORPORATION, KIA MOTORS CORPORATIONInventors: Ju Hoon Shin, Kwang Jin Park, Soon Young Jung
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Patent number: 8744718Abstract: A method for controlling a vehicle's speed includes adopting a desired speed vset for the vehicle; determining by means of map data and location data a horizon for the intended itinerary which is made up of route segments with at least one characteristic for each segment; effecting the following during each of a number of simulation cycles (s) each comprising a number N of simulation steps conducted at a predetermined frequency f: making a first prediction of the vehicle's speed vpred—cc along the horizon with conventional cruise control when vset is presented as reference speed, which prediction depends on the characteristics of said segment; comparing the predicted vehicle speed vpred—cc with vmin and vmax, which demarcate a range within which the vehicle's speed is intended to be; making a second prediction of the vehicle's speed vpred—Tnew along the horizon when the vehicle's engine torque T is a value which depends on the result of said comparison in the latest preceding simulation cycle (s?1); determiniType: GrantFiled: June 21, 2011Date of Patent: June 3, 2014Assignee: Scania CV ABInventors: Oskar Johansson, Maria Södergren, Fredrik Roos
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Patent number: 8744700Abstract: A device comprising a processor that detects an autonomously sensed change in a vehicle's operational state from an initial state characterized by a sensed vehicle speed equal to about 0; to an immediately succeeding vehicle state characterized by sensed vehicle speed being greater than about 0 and, verification from a reverse operating mode sensor that longitudinal vehicle speed is in a reverse direction; and presumptively signals the thusly detected change of vehicle operational state as an instance of reverse operation of the associated vehicle.Type: GrantFiled: April 25, 2012Date of Patent: June 3, 2014Inventors: Darren Beams, Neil Cawse
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Patent number: 8731795Abstract: A vehicle braking control system includes a vehicle brake associated with a wheel on the vehicle. A pedal activated by an operator of the vehicle controls application of the brake. An electronic control unit determines a grade mode of the vehicle and controls application of the brake independent of the operator activating the pedal while in an automatic braking mode. The electronic control unit sends a control signal to apply the brake in a manner to reduce brake fade while controlling a speed of the vehicle when the electronic control unit is in the automatic braking mode and the vehicle is in a downhill grade mode.Type: GrantFiled: October 12, 2010Date of Patent: May 20, 2014Assignee: Bendix Commercial Vehicle Systems LLCInventors: Timothy J. Frashure, Richard J. Conklin
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Patent number: 8712655Abstract: A control system is provided for shifting an automatic transmission of a motor vehicle, which includes, but is not limited to a speed controller, and an electronic control device. Through the electronic control device the parameters vehicle speed, position of the speed controller and acceleration of the speed controller can be captured. Through the electronic control device and through comparison of the captured values of the parameters with predetermined reference values a shifting time is determined for shifting the automatic transmission.Type: GrantFiled: September 21, 2012Date of Patent: April 29, 2014Assignee: GM Global Technology Operations LLCInventors: Martin Gentile, Gernot Becker
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Patent number: 8688349Abstract: When employing an a cruise control system in a commercial or heavy-duty vehicle, an adaptive cruise control (ACC) system (14) is activated upon activation of a vehicle or set-speed cruise control (SSCC) system (16). The ACC (14) remains on, even after SSCC shutoff, to maintain a minimum following distance for a primary vehicle in which the ACC (14) is employed and a forward vehicle. The ACC (14) is deactivated after detection of an ACC shutoff trigger event, which may be driver application of the brakes of the primary vehicle, driver-initiated acceleration for a predefined time period, expiration of a predetermined time period, manual shutoff (e.g., via a switch or button), etc.Type: GrantFiled: June 21, 2012Date of Patent: April 1, 2014Inventors: Kenneth A. Grolle, Thomas J. Thomas, William P. Amato, Robert J. Custer, Srikiran Kosanam
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Patent number: 8676415Abstract: A method for controlling a demand for engine power in a control for an engine in a hybrid electric vehicle with power-split characteristics. Following transitions from acceleration or deceleration operating modes to a steady-state operating mode, power demand excursions from road-load power are attenuated or avoided by filtering the power demand using a filter constant that changes within battery power constraints as a function of a normalized driver demand for power at traction wheels for the vehicle.Type: GrantFiled: June 12, 2009Date of Patent: March 18, 2014Assignee: Ford Global Technologies, LLCInventors: Carol Louise Okubo, Christopher Alan Lear, Kenneth Frederick
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Publication number: 20140032023Abstract: A method for vehicle control comprises determining a braking capability of a braking system of a rail vehicle or other vehicle, and modifying application of at least one mission parameter by a control system of the vehicle based on the determined braking capability. Braking capability may be determined by activating the braking system of the vehicle to apply a braking force on the vehicle, and concurrently, applying a level of tractive effort of the vehicle is sufficient to overcome the braking force. The braking capability is determined based on the level of tractive effort.Type: ApplicationFiled: December 30, 2011Publication date: January 30, 2014Inventors: Ajith Kuttannair Kumar, Eugene A. Smith, Paul Kenneth Houpt, Glenn Robert Shaffer, Joseph Forrest Noffsinger, Brian J. McManus, Jared Cooper, David Michael Peltz
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Patent number: 8626424Abstract: An engine control system of the present disclosure comprises a target speed module and a coupling module. The target speed module determines a target speed of a vehicle based on a speed of the vehicle and at least one of an accelerator input and a speed control input. The coupling module controls coupling of an engine system and a drive system of the vehicle based on the speed and the target speed. The engine system transfers torque to the drive system when coupled and does not transfer torque to the drive system when decoupled. In other features, the engine control system further comprises a torque control module that controls torque output by the engine system based on the coupling of the engine system and the drive system, the speed, and the target speed.Type: GrantFiled: August 5, 2009Date of Patent: January 7, 2014Inventors: Jayson S. Schwalm, Steven Thomas Ford, John J. Koenig
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Patent number: 8620498Abstract: A method of regulating operation of a hybrid vehicle traveling on a surface having a grade includes determining a drive force of the hybrid vehicle, calculating a brake pressure value and determining whether a grade freeze condition exists based on the brake pressure value. The method further includes calculating a grade value of the surface based on the drive force when the freeze condition does not exist and regulating operation of the hybrid vehicle based on the grade value.Type: GrantFiled: October 26, 2006Date of Patent: December 31, 2013Inventors: Mark A. Zerbini, Goro Tamai
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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: 8584824Abstract: A method and device for controlling an automatic freewheeling function in a vehicle where a freewheeling function is active due to a prevailing freewheeling condition and where a control unit is programmed to: predict that the vehicle soon will travel in a steep downhill slope that is steeper compared to a prevailing downhill slope; simulate if less fuel will be consumed if the freewheeling function is inactivated in a a further position before the vehicle enters the steeper downhill slope, compared to if the vehicle enters the steeper downhill slope with the freewheeling function active; and inactivate the freewheeling function in the further position, that is, before the vehicle enters the steeper downhill slope if the simulation shows that less fuel will be consumed.Type: GrantFiled: May 8, 2009Date of Patent: November 19, 2013Assignee: Volvo Lastvagnar ABInventors: Anders Eriksson, Niklas Öberg
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Publication number: 20130297174Abstract: A method and system that utilizes the energy storage provided by a vehicle's mass in the form of potential and kinetic energy to optimize the fuel consumption. The system of the present invention is composed of an elevation database, a localization mechanism, and a speed optimization mechanism/engine. The optimization engine receives a desired speed range from the operator such as a max speed and min speed input, and a route or elevation profile form the elevation database. Then, utilizing the elevation database, the localization mechanism and a weight estimate the system and method optimizes the current speed to minimize fuel consumption by way of setting and adjusting the cruise control speed. The route and the weight estimate may be provided or predicted by the optimization engine.Type: ApplicationFiled: October 27, 2012Publication date: November 7, 2013Inventors: Alberto Daniel Lacaze, Kari Nicholas Murphy, Joseph Satoru Pulney
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Patent number: 8554443Abstract: An ECU designates a value of a variation “Vunder” based on at least one of information about driver's operation, a velocity, and a road surface gradient when an actual velocity “V” is higher than a target velocity, sets a value of a variation “Vtarget” based on the designated value of the variation “Vunder” and the target velocity, adjusts the velocity of the vehicle to the velocity of the set value of the variation “Vtarget”, and determines whether the actual velocity “V” after the adjustment is a value not greater than the value of the variation “Vtarget”. Then, the ECU converges the velocity of the vehicle to the target velocity after it has been determined that the actual velocity “V” after the adjustment is a value not greater than the value of the variation “Vtarget”.Type: GrantFiled: March 6, 2009Date of Patent: October 8, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Motonari Ohbayashi, Ayako Nishimura, Masayuki Naito
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Publication number: 20130238210Abstract: A grade propulsion system provided herein includes: a propel pump; a brake system; an operator control configured to receive and transmit a propel command and a Hill Mode activation; and a controller electronically coupled to the propel pump, the brake system, and the operator control, the controller configured, after activation of the Hill Mode and the propel command, to transmit a propel current to the propel pump and disengage the brake system when the propel current is equal to or greater than a cracking current plus an offset current.Type: ApplicationFiled: March 4, 2013Publication date: September 12, 2013Applicant: Caterpillar Paving Products Inc.Inventors: Toby A. Frelich, Kea V. Chin, Steven R. Queen
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Patent number: 8532906Abstract: A vehicle stability control system comprises a 5-sensor cluster and a stability controller configured to communicate with the 5-sensor cluster and receive signals corresponding to a lateral acceleration, a longitudinal acceleration, a yaw rate, a roll rate, and a pitch rate from the 5-sensor cluster. The stability controller can also be configured to determine a braking amount or a throttle amount to maintain vehicle stability. The system also comprises a brake controller configured to communicate with the stability controller and receive a braking request from the stability controller, and a throttle controller configured to communicate with the stability controller and receive a throttle request from the stability controller. The system may also comprise a braking or throttling command computed based on various scenarios detected by measured and calculated signals.Type: GrantFiled: February 8, 2012Date of Patent: September 10, 2013Assignee: Ford Global Technologies, LLCInventors: Jianbo Lu, Leonard K. Johnson, Joseph Carr Meyers
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Patent number: 8510011Abstract: A system for controlling a vehicle that controls driving force and braking force such that a vehicle speed is maintained at a target vehicle speed. More specifically, when the vehicle speed exceeds the target vehicle speed, the system for controlling a vehicle maintains the driving force at or above a predetermined value, and applies braking force to the vehicle such that the vehicle speed is maintained at the target vehicle speed. This provides the vehicle with sufficient driving force for uphill driving following the downhill driving, and thus to travel uphill without significant speed loss. In other words, the vehicle ascends the uphill road smoothly at an approximately constant speed.Type: GrantFiled: June 6, 2007Date of Patent: August 13, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Advics Co., Ltd.Inventors: Gen Inoue, Yasuhito Ishida
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Patent number: 8504274Abstract: Adaptive cruise control method improves traveling performance and stoppage maintenance performance on an incline. During adaptive cruise control, a gradient of a road is estimated based on a vehicle acceleration and longitudinal acceleration to enable compensation of a resistance torque with respect to the gradient of the road, which prevents deterioration of a traveling speed of a vehicle on an incline. Also, compensating for a brake torque to prevent the vehicle from being pushed rearward when the vehicle stops or starts to go on an incline may prevent deterioration of performance on an incline.Type: GrantFiled: May 11, 2011Date of Patent: August 6, 2013Assignee: Mando CorporationInventor: Byung Suk Park
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Patent number: 8433494Abstract: A method for controlling the speed of a vehicle having a regenerative or active braking capacity when the vehicle is traveling downhill using a cruise control system on the vehicle. When brake pedal is applied and the cruise control is set, the vehicle is put into a controlled braking mode. The cruise control system controls are then used inversely to the normal operation where decreases in vehicle speed are provided by applying motoring torque. For the inversed cruise control, increasing the vehicle speed is prohibited by applying more regenerative braking torque.Type: GrantFiled: July 14, 2009Date of Patent: April 30, 2013Assignee: GM Global Technology Operations LLCInventor: Thomas Vogel
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Patent number: 8380412Abstract: A control device (10) for a brake-power-assisted brake system of a vehicle having a first input device (26) for a supplied first information item (28) relating to a supplied assistance force (Fu) of a brake booster (14) of the brake-power-assisted brake system, a second input device (30) for a supplied second information item (32) relating to a total force (Fg) comprising the assistance force (Fu) and a driver braking force (FI) supplied by activation of an activation element (12) of the brake-power-assisted brake system, an evaluation device (36) which is configured to define a third information item relating to a proportional relationship between the total force (Fg) and the assistance force (Fu) taking into account the first information item (28) and the second information item (32), and an output device (44, 50) which is configured to supply at least one control signal (46, 52) to at least one component (14, 54) of the brake-power-assisted brake system taking into account the defined third information iteType: GrantFiled: February 9, 2010Date of Patent: February 19, 2013Assignee: Robert Bosch GmbHInventors: Herbert Vollert, Remy Garnier, Reinhard Weiberle, Timo Jahnz, Volker Mehl, Frank Kneip, Dirk Mahnkopf, Jens Kolarsky, Stephan Hoenle
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Patent number: 8370042Abstract: A vehicle speed control device calculates a desired axle torque for maintaining a speed of a vehicle to a set speed, and conducts cruise control. Specifically, the vehicle speed control device calculates a drive force including a feedforward component corresponding to the set speed and a travel resistance against the travel of the vehicle, and a feedback component corresponding to a deviation of the set speed from the actual speed of the vehicle as a desired axle torque. The vehicle speed control device interrupts the cruise control when a requested drive axle torque requested by an accelerator operation during the cruise control exceeds the desired axle torque, and restarts the cruise control when the requested drive axle torque becomes lower than the desired axle torque.Type: GrantFiled: July 9, 2008Date of Patent: February 5, 2013Assignees: Denso Corporation, Advics Co., Ltd.Inventors: Mitsuhiro Tokimasa, Hajime Kumabe, Syotarou Fukuda, Yasuhiro Nakai, Satoshi Niwa, Hiroyuki Kodama, Masayoshi Takeda, Shintaro Osaki, Kazunori Kadowaki
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Publication number: 20130030668Abstract: A method and a vehicle cruise control system performing the steps of driving with the cruise control active and set to maintain a set target speed, registering a first position when driving in an uphill slope of a hill where vehicle retardation has decreased vehicle speed to a first speed below the set target speed and where the retardation has decreased to zero or acceleration has just started in order to increase speed to the set target speed, registering a desired speed in a second position downhill of the crest at a first distance after the crest, based on the desired speed calculating a minimum speed at the crest with which the vehicle has to pass the crest in order to be able to reach the desired speed with zero fuel consumption during the first distance, controlling speed between the first position and the crest so that the vehicle reaches the minimum speed when passing the crest.Type: ApplicationFiled: July 2, 2009Publication date: January 31, 2013Applicant: Volvo Lastvagnar ABInventors: Anders Eriksson, Johan Bjernetun
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Patent number: 8355851Abstract: A vehicle cruise control apparatus includes a vehicle speed adjusting device that adjusts a vehicle speed to a set target vehicle speed, a brake operation detecting device that detects brake operation performed by a driver, and a first controller that controls the vehicle speed adjusting device based on a target driving force that maintains a vehicle in a stopped condition, when the brake operation performed by the driver is detected.Type: GrantFiled: September 4, 2008Date of Patent: January 15, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Advics Co., Ltd.Inventors: Gen Inoue, Katsuyuki Kawai, Hiroyuki Sawada, Ichiro Kitaori, Yasuhito Ishida
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Publication number: 20120259527Abstract: Provided is a vehicle control device which generates a speed pattern of a vehicle and controls traveling of the vehicle based on the speed pattern, including: rear vehicle travel situation checking means for checking a travel situation of a rear vehicle which travels behind the vehicle; wave-like travel speed pattern generating means for generating a wave-like travel speed pattern where acceleration travel and free run travel are alternately repeated based on the travel situation of the rear vehicle; and control means for controlling the traveling of the vehicle based on the wave-like travel speed pattern.Type: ApplicationFiled: December 22, 2009Publication date: October 11, 2012Applicant: Toyota Jidosha Kabushiki KaishaInventor: Koji Taguchi
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Patent number: 8280560Abstract: An adaptive vehicle control system that classifies a drivers driving style based on vehicle headway control. The system reads sensor signals to identify the range and range rate between a subject vehicle and a preceding vehicle, where the range rate is close to zero if the distance between the subject vehicle and the preceding vehicle is relatively steady, the range rate is negative when the subject vehicle is closing in on the preceding vehicle and the range rate is positive when the subject vehicle is falling behind the preceding vehicle. The range rate, the subject vehicle speed and other signals are used to classify the drivers driving style based on how fast the subject vehicle closes in on the preceding vehicle or falls behind, and the following distance between the subject vehicle and the preceding vehicle. The system can then classify the headway-control maneuver using selected discriminant features.Type: GrantFiled: July 24, 2008Date of Patent: October 2, 2012Assignee: GM Global Technology Operations LLCInventors: Jihua Huang, William C. Lin, Yuen-Kwok Chin
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Publication number: 20120209490Abstract: A vehicle stability control system comprises a 5-sensor cluster and a stability controller configured to communicate with the 5-sensor cluster and receive signals corresponding to a lateral acceleration, a longitudinal acceleration, a yaw rate, a roll rate, and a pitch rate from the 5-sensor cluster. The stability controller can also be configured to determine a braking amount or a throttle amount to maintain vehicle stability. The system also comprises a brake controller configured to communicate with the stability controller and receive a braking request from the stability controller, and a throttle controller configured to communicate with the stability controller and receive a throttle request from the stability controller. The system may also comprise a braking or throttling command computed based on various scenarios detected by measured and calculated signals.Type: ApplicationFiled: February 8, 2012Publication date: August 16, 2012Applicant: FORD GLOBAL TECHNOLOGIES, LLC.Inventors: Jianbo LU, Leonard K. JOHNSON, Joseph Carr MEYERS