Having A Plurality Of Preset Maps, Schedules, Or Patterns Patents (Class 701/56)
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Patent number: 8050831Abstract: A vehicle and a method for controlling a vehicle transmission is provided. The vehicle has at least one wheel and a positionable acceleration device. The vehicle includes an engine being responsive to the position of the acceleration device, wherein the engine provides torque to the wheel. In one embodiment, a transmission is coupled to the engine and the wheel, wherein the transmission provides multiple speed ratios and is configured to operate in a continuously variable mode. The vehicle also includes a controller that communicates with the engine and the transmission. The controller senses the position of the acceleration device, determine a shift schedule based on the position of the acceleration device, and set an engine speed limit for the engine. The controller also generates signals for the transmission to provide the speed ratio based on the engine speed limit while the transmission operates in the continuously variable mode.Type: GrantFiled: April 7, 2006Date of Patent: November 1, 2011Assignee: Ford Global Technologies, LLCInventors: Douglas Martin, Edward Badillo, John Shanahan
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Patent number: 8041488Abstract: A method and apparatus for determining a motion transmission value that provides security of motion transmission between two components that transfer motion through frictional engagement. The motion transmission value provides security of motion transmission through the reaction of the motion transmitted to a change in the contact force between the components that are frictionally engaged. The contact force is modulated in a predetermined frequency range during the motion transmission, and the change in the motion transmitted during the modulation of the contact force is detected. The change in the motion transmitted is evaluated using a filtering process, and the motion transmission value is determined as the result of the evaluation.Type: GrantFiled: November 26, 2005Date of Patent: October 18, 2011Assignee: LuK Lamellen und Kupplungsbau Betelligungs KGInventor: Michael Reuschel
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Publication number: 20110224877Abstract: A powertrain of a vehicle has a drive unit, a transmission and an auxiliary gearbox. Operation of the transmission and the auxiliary gearbox is controlled by a transmission control unit. The transmission control unit controls shifting of the auxiliary gearbox and the transmission while the vehicle is in operation. The auxiliary gearbox may be electronically shifted, independently of activity of the vehicle operator.Type: ApplicationFiled: November 2, 2010Publication date: September 15, 2011Inventors: Bruce Faucett, Robert F. Combs, Leroy K. Johnson
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Publication number: 20110224878Abstract: There is provided a shift control apparatus of an automatic transmission in a vehicle including a constant speed traveling apparatus, which has a detecting device detecting a surrounding situation of the vehicle and operates according to the detected situation, and an automatic transmission capable of steplessly changing a transmission ratio, the shift control apparatus controlling the automatic transmission according to a shift map for changing the transmission ratio according to a traveling state. The shift control apparatus includes a plurality of shift maps, and a switching and selecting unit selecting and switching to one of the shift maps based on a shift-down request signal or a requested acceleration, which is outputted by a constant speed traveling control device of the constant speed traveling apparatus, according to the situation detected by the detecting device.Type: ApplicationFiled: February 4, 2011Publication date: September 15, 2011Applicant: SUZUKI MOTOR CORPORATIONInventors: Yusuke Nakamura, Hiroyuki Sato
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Patent number: 8014925Abstract: A control apparatus for an automatic transmission includes an operational condition detecting unit for detecting a vehicle operational condition, a slope detecting unit for detecting a road surface slope, and a shift characteristic selecting unit for selecting one of a plurality of shift maps preliminarily set according to the road surface slope. The control apparatus further includes an acceleration/deceleration calculating unit for calculating an acceleration or deceleration from the degree of increase or decrease in vehicle speed per unit time, a deceleration shift characteristic for deciding a gear position according to the deceleration and the vehicle speed, and a brake detecting unit for detecting a brake operation. When the road surface slope is determined to be a downhill slope and the brake operation is detected, the selected shift map is changed to the deceleration shift characteristic and the gear position is decided according to the deceleration shift characteristic.Type: GrantFiled: January 23, 2008Date of Patent: September 6, 2011Assignee: Honda Motor Co., Ltd.Inventors: Yoshiharu Saitou, Ryuji Murata
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Patent number: 8014926Abstract: A vehicle control device for executing the following control are provided. When a driving mode is input, a CPU of an ECU outputs an instruction for shifting a power transfer mechanism in accordance with the input driving mode, and controls a power control mechanism in accordance with a stored driving mode. When it is determined that shifting of the power transfer mechanism has been completed, the CPU switches the characteristic of the power control mechanism in accordance with the input driving mode. On the other hand, when it is determined that a predetermined period of time has elapsed without completing the shifting from when the instruction for shifting the power transfer mechanism is issued, the CPU maintains the characteristic of the power control mechanism at a characteristic corresponding to the stored driving mode.Type: GrantFiled: October 6, 2009Date of Patent: September 6, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventor: Hiroyuki Sawada
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Patent number: 8010260Abstract: 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: September 1, 2004Date of Patent: August 30, 2011Assignee: Komatsu Ltd.Inventor: Eiji Toda
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Patent number: 7998006Abstract: In a speed ratio control device for a belt continuously variable transmission according to this invention, when a speed ratio is subjected to feedback control on the basis of a difference between an actual speed ratio and a target speed ratio, pressure supplied to a primary pulley is corrected through feedforward (S17, S18) in order to suppress variation in the groove width of the primary pulley caused by a rapid variation in an input torque into the primary pulley (S17) while traveling in a fixed speed ratio mode (S14) in which the target speed ratio is held at a fixed value.Type: GrantFiled: October 2, 2006Date of Patent: August 16, 2011Assignee: Jatco LtdInventors: Hironori Nihei, Tetsuya Izumi, Seonjae Kim, Fumito Shinohara, Kiyotaka Sawano, Takuya Numata
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Patent number: 7980994Abstract: A load control structure for a work vehicle comprises: set rotation speed detection device for detecting a set rotation of an engine of the work vehicle; actual rotation speed detection device that senses an actual rotational speed of the engine; continuously variable speed change device that receives power from an engine of the work vehicle; speed change position detecting device for detecting a speed change operation position of the continuously variable speed change device; operating device for speed-shifting the continuously variable speed change device; control device for controlling the operation of the operating device; wherein the control device calculates a drop amount of the actual engine rotation speed from the set rotation speed based on the detected information from the set rotation speed detection device and the actual rotation speed detection device, and sets a limit operation position for the continuously variable speed change device based on the calculated drop amount and a correlation data tType: GrantFiled: February 25, 2010Date of Patent: July 19, 2011Assignee: Kubota CorporationInventors: Eiji Nishi, Keishiro Nishi, Atsushi Shinkai, Yasunobu Nakatani
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Patent number: 7979184Abstract: An automatic transmission controller system and method are disclosed. In particular, disclosed is a system and method for controlling solenoid pressure control valves associated with an automatic transmission. The automatic transmission controller system comprises a controller which is configured to receive one or more electrical signal inputs for attributing each solenoid pressure control valve with one of a set of I-P calibration curves.Type: GrantFiled: September 19, 2007Date of Patent: July 12, 2011Assignee: Honda Motor Co., Ltd.Inventors: Michael T. Dickinson, Chris Hopp
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Patent number: 7979183Abstract: 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: August 4, 2010Date of Patent: July 12, 2011Assignee: Komatsu Ltd.Inventor: Eiji Toda
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Patent number: 7970522Abstract: A work machine gear shifting control system provides gear shifting conditions for an automatic gear shifting mode in accordance with work site conditions. An area 62 of a display device 49 displays a permissible velocity setting range and setup operation guidance, and another area 64 shows guidance to indicate whether the setting is acceptable or unacceptable. When the traveling velocity falls within the permissible velocity setting range, the displayed guidance changes to indicate that the setting is acceptable. When, in this instance, an operator presses a setup switch 23 with desired timing, a transmission gear shifting control section 45 acquires the prevailing vehicle velocity and velocity ratio (or vehicle velocity), and stores adjustment values in an adjustment value storage section 43 so that the vehicle velocity and velocity ratio become the gear shifting control threshold values for normal gear shifting control (steps S535 to S545).Type: GrantFiled: November 9, 2006Date of Patent: June 28, 2011Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Hidenobu Tsukada, Kazunori Nakamura, Youichi Kowatari, Masaki Yoshikawa
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Patent number: 7967724Abstract: A controller selects a shift map for deriving the shift timing of an automatic transmission according to output signals from a front seat seating sensor, a pillion seating sensor and a carrier loading sensor. The controller switches the shift map of a standard type to an output-emphasizing type shift map when the seating of the rider is sensed and at least one of the seating of the passenger and the loading on the carrier is sensed. The controller judges the seating of the rider or the loading of the cargo when a load equal to or exceeding a predetermined value is continuously applied to each load sensor for predetermined time or longer. Load sensors that can measure weight are used and a shift map may be also selected based upon a total value of loaded weight.Type: GrantFiled: October 26, 2007Date of Patent: June 28, 2011Assignee: Honda Motor Co., Ltd.Inventors: Hiroyuki Kojima, Yoshiaki Nedachi
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Patent number: 7962768Abstract: A control system for a machine is disclosed. The control system may have a power source, an operator input device, a work implement, and a controller in communication with the power source and the operator input device. The operator input device may be configured to generate a signal indicative of a desired mode of power source operation. The work implement may be driven by the power source to accomplish a task. The controller may be configured to classify a currently performed task, and adjust power source operation based on the task signal and the classification.Type: GrantFiled: February 28, 2007Date of Patent: June 14, 2011Assignee: Caterpillar Inc.Inventors: Thomas Lynn Grill, Rick William Berlage, Lucas Adam Knapp, Eric Wade Cler
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Patent number: 7957893Abstract: Methods and systems for generating, deriving, and enhancing drivable road databases are provided. A baseline road in a road network is defined and position and/or trajectory data collected by vehicles traveling the baseline road are compiled and compared to a representation of the baseline road in an existing database. Identity and/or other property information about the road are assigned form the existing database to the new database.Type: GrantFiled: November 30, 2005Date of Patent: June 7, 2011Assignee: Dash Navigation, Inc.Inventor: Brian Smartt
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Patent number: 7953535Abstract: A method of controlling a machine drive having a driveline PTO establishes a driveline torque perturbation via conversion of internal inertia through two transmission neutral conditions. In an example, when a request is received, e.g., from an operator, to shift the driveline PTO from a first mode to a second mode, the transmission is automatically modulated between its first neutral condition and its second neutral condition while the driveline PTO is shifted from the first mode to the second mode, thus minimizing torque lock and facilitating mode changes.Type: GrantFiled: July 31, 2007Date of Patent: May 31, 2011Assignee: Caterpillar Inc.Inventors: James W. Landes, Ryan L. Horihan, Kevin G. Meyer, Travis Edward Moore
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Patent number: 7949452Abstract: A motor vehicle includes a clutch and an automated transmission between the engine and the drive wheels of the vehicle. A method for shift control in the motor vehicle when starting off or under way includes continuously performing computer simulations of the future driving of the vehicle, at least in response to information on road incline and throttle opening position, for a set of different shift schedules with combinations of engine speeds when shifting and shift steps, and selecting a shift schedule from the set of shift schedules which is optimal with regard to a selected criterion.Type: GrantFiled: July 20, 2007Date of Patent: May 24, 2011Assignee: Volvo Lastvagnar ABInventors: Anders Eriksson, Marcus Steen
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Patent number: 7945366Abstract: In a control for a motor vehicle transmission having a clutch and means for establishing and/or releasing an engagement of a toothing or of jaws of the motor vehicle transmission including a control unit for actuating the clutch for transmitting a torque to a first component of the toothing, the control unit being adapted, for the purpose of releasing a tooth-on-tooth position of the toothing, to briefly provide a control signal for adjusting the clutch to a desired clutch position (KS) in order to generate a torque pulse, the control unit determining a reaction of the motor vehicle transmission in response to the control signal from the control unit and adapting the desired clutch position (KS) as a function of the reaction.Type: GrantFiled: September 17, 2007Date of Patent: May 17, 2011Assignee: Daimler, AGInventors: Ulrich Bartels, Manfred Guggolz, Werner Hillenbrand, Erwin Schneeberger
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Patent number: 7937195Abstract: A system for managing a power source in a vehicle having an engine and an electric machine can set first and second discharge limits for the power source, where the second discharge limit is higher than the first discharge limit. A buffer value can be determined as a function of at least the second discharge limit and an engine-on power requirement. A driver demand for power can be determined, and the engine started when the engine is off and the driver demand for power exceeds the buffer value.Type: GrantFiled: July 30, 2010Date of Patent: May 3, 2011Assignee: Ford Global Technologies, LLCInventor: Shailesh Kozarekar
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Patent number: 7933708Abstract: In some embodiments, systems and methods are provided for assisting in acceleration of a vehicle during re-acceleration. In one embodiment, a system comprises one or more sensors that monitor vehicular conditions, which are transmitted to and processed by an electronic controller. When the processed signals indicate re-acceleration of the vehicle, the electronic controller activates an aggressive schedule or aggressive throttle map that defines instructions for downshifting a transmission gear position or for increasing a throttle so as to assist in acceleration of the vehicle during re-acceleration. The electronic controller activates the instructions when one or more vehicular conditions of accelerator pedal depression exceed a predefined value during re-acceleration. The electronic controller selects the instructions most appropriate for assisting in acceleration according to the processed signals.Type: GrantFiled: August 10, 2007Date of Patent: April 26, 2011Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventor: Tai Joey Ly
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Patent number: 7912613Abstract: A riding type vehicle includes an automatic transmission capable of executing a shift change by a clutch actuator and a shift actuator. A clutch is controlled by the clutch actuator and is a multiplate clutch. The multiplate clutch is provided with bias member configured to enlarge a partial clutch engagement region of the clutch. The multiplate clutch is configured such that during shift change, both of the clutch actuator and the shift actuator are controlled to operate in overlapping manner.Type: GrantFiled: June 30, 2005Date of Patent: March 22, 2011Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Makoto Kosugi
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Patent number: 7912615Abstract: A method for gear selection during driving of a vehicle in a heavy uphill drive condition is provided, the vehicle including an engine, an automated mechanical transmission, a clutch, a control unit for receiving input signals including signals indicative of vehicle speed, engaged ratio of the transmission, rotational speed of the engine, rotational speed of a input shaft and displacement of a throttle control for engine torque request, and for processing the signals in accordance with programmed logic rules to issue command output signals to the engine, to the transmission and to said clutch.Type: GrantFiled: December 9, 2005Date of Patent: March 22, 2011Assignee: Volvo Lastvagnar ABInventors: Anders Lindgren, Sixten Berglund, Peter Templin, Anders Eriksson
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Patent number: 7908063Abstract: An apparatus and method are provided to execute synchronous shifting in a powertrain system having multiple torque-generative devices each operable to independently supply motive torque to the transmission device. The exemplary transmission device comprises a two-mode, compound-split, hybrid electro-mechanical transmission. Operation includes operating in an initial fixed gear ratio, operating the transmission in a mode operation, and, operating the transmission in a final fixed gear ratio. The control system reduces reactive torque of a clutch activating the initial gear, and deactivates the first torque-transfer device when the reactive torque is less than a predetermined value. It determines that speed of an input shaft to the transmission is substantially synchronized with a rotational speed of the second torque-transfer device, and actuates the second torque-transfer device.Type: GrantFiled: May 3, 2006Date of Patent: March 15, 2011Assignee: GM Global Technology Operations LLCInventor: Jy-Jen F. Sah
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Patent number: 7894969Abstract: A control apparatus includes a torque-boost control portion that boosts torque output from the engine, and corrects the operation amount of an adjustment mechanism that adjusts the amount of air taken into the engine to increase the amount of air during a torque phase when the automatic transmission upshifts; and an inertia-phase determination portion that determines whether an inertia phase has started. The torque-boost control portion includes a torque-boost end control portion that executes a torque-boost end control that gradually decreases a correction amount, by which the operation amount is corrected, to zero when the inertia-phase determination portion determines that the inertia phase has started.Type: GrantFiled: July 18, 2007Date of Patent: February 22, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Tomohiro Asami, Toshio Sugimura, Takaaki Tokura, Nobufusa Kobayashi
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Publication number: 20110029207Abstract: A control device for an automatic transmission includes a speed change controller configured to generate a speed change instruction. A temperature calculator is configured to calculate a temperature of at least one frictional engagement element among frictional engagement elements. A rotation difference calculator is configured to calculate a rotation difference between an input and an output of the at least one frictional engagement element. A determining unit is configured to determine whether the frictional engagement element is engageable or non-engageable based on the temperature and the rotation difference of the frictional engagement element and a pattern of the speed change instruction. The delay unit is configured to delay engagement until the determining unit determines that the frictional engagement element is engageable, if the determining unit determines that the frictional engagement element is non-engageable when the speed change controller generates the speed change instruction.Type: ApplicationFiled: July 28, 2010Publication date: February 3, 2011Applicant: HONDA MOTOR CO., LTDInventors: Kazuma Sasahara, Takashi Satoyoshi, Ryuta Suzuki
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Patent number: 7881847Abstract: An EEPROM of an ECU (engine control unit) stores regulation maps corresponding to a plurality of running modes (e.g., normal mode, swift mode and gentle mode). The regulation maps regulate the relationship between the clutch rotational speed difference and the target clutch position. When any one of the running modes is selected according to user intentions, the target clutch position is uniformly changed according to the running mode.Type: GrantFiled: August 31, 2006Date of Patent: February 1, 2011Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Tooru Zenno
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Patent number: 7869926Abstract: A method of operating a hybrid transmission includes controlling the transmission according to a drive mode, which includes a continuously variable speed relationship, and controlling the transmission according to a fixed speed relationship mode, which includes a plurality of fixed speed relationships including mechanical gear ratios and virtual gear ratios.Type: GrantFiled: December 19, 2006Date of Patent: January 11, 2011Assignees: Chrysler Group LLC, GM Global Technology Operations, Daimler AG, Bayerische Motoren Werke AktiengesellchaftInventors: Christopher A. Tuckfield, Konstantin Neiss
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Patent number: 7856301Abstract: Method and device for controlling a machine which is intended to be operated in several different operating states, the machine being intended to utilize different types of equipment in at least two of these operating states for different activities. The device includes a means (1) which is intended to be actuated and which can be set in a number of different positions (2-6), and each of these positions corresponds to one of the operating states.Type: GrantFiled: October 22, 2004Date of Patent: December 21, 2010Assignee: Volvo Construction Equipment ABInventors: Joakim Sjögren, Bo Vigholm, Nils-Erik BĂ¥nkestad, Sven-Alie Carlsson, Gunnar Löwestrand
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Publication number: 20100305822Abstract: A method is provided for selecting between economy mode and performance mode shift schedules for a transmission in a motor vehicle. A desired vehicle acceleration profile is specified, and a cumulative net tractive force of the vehicle is determined over the desired vehicle acceleration profile. A change in vehicle speed over the desired vehicle acceleration profile is also determined. A vehicle mass-based shift schedule breakpoint is computed as a function of the cumulative net tractive force of the vehicle and the change in vehicle speed over the desired vehicle acceleration profile. The vehicle mass-based shift schedule breakpoint is compared to a current vehicle mass indicator, and one of the economy mode and performance mode shift schedules is selected for operation of the transmission based on the comparison. Shifting between gear ranges of the transmission is controlled using the selected one of the economy mode and performance mode shift schedules.Type: ApplicationFiled: June 1, 2009Publication date: December 2, 2010Inventors: John Kresse, Robert Merrion
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Patent number: 7819325Abstract: Calibration data transfer systems are described for use in conjunction with, for example, automotive components such as but not limited to transmission systems. The systems employ devices, such as but not limited to barcode systems such as 2D barcodes, radio frequency identification devices (RFID), digital data storage systems such as CD-ROM's, and the like, to record and/or store data thereon. The data can include information, such as but not limited to solenoid calibration curve coefficients and the like. The data contained on these devices can be accessed by a data retrieval system, such as a scanner, and transferred, for example, to a transmission control unit.Type: GrantFiled: August 22, 2005Date of Patent: October 26, 2010Assignee: BorgWarner, Inc.Inventors: Mark Buchanan, William Vukovich, Melissa Koenig
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Publication number: 20100250076Abstract: The present invention provides a method of selecting and implementing a shift schedule for a transmission in a vehicle that includes an output speed sensor and a controller. The method includes measuring output speed with the output speed sensor and comparing the measured output speed to an output speed threshold. The controller receives throttle percentage and compares the throttle percentage to a throttle threshold. The method also includes calculating output acceleration and transmission gear ratio with the controller. The shift schedule is selected based on the measured output speed, calculated output acceleration, calculated transmission gear ratio, and throttle percentage.Type: ApplicationFiled: March 24, 2009Publication date: September 30, 2010Inventors: Jeffrey E. Shultz, Jared S. Shattuck
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Patent number: 7801654Abstract: A powertrain controller for a vehicle comprises a vehicle load estimation module, an adaptive power demand module, a throttle map module, and a transmission gearshift map module. The adaptive power demand module selects one of N mappings from pedal position to power demand based upon a vehicle load index and determines a power demand signal based upon a received pedal position signal and the selected one of the N mappings. The throttle map module selects one of P mappings from speed to throttle control based upon the power demand signal and determines a throttle control signal based upon a received speed signal and the selected one of the P mappings. The transmission gearshift map module selects one of Q mappings from vehicle speed to gear selection based upon the power demand signal and determines a gear control signal based upon a received vehicle speed signal and the selected one of the Q mappings.Type: GrantFiled: May 11, 2007Date of Patent: September 21, 2010Inventor: Shushan Bai
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Patent number: 7801655Abstract: A signal processing system with rapid signal processing, for example for controlling the transmission of a motor vehicle, with an input module that calls for a desired reaction by emitting a request signal, a signal processing module, and a target module that implements the desired reaction, which, to accelerate processing, provides that several steps are carried out in parallel, such that the said signal processing module comprises a check module and a clock module each of which receives the request signal, the signal processing module also comprises an actuator module acting between the input module and the clock module, the clock module is connected to the output of the check module, and the actuator module is connected to the target module for transmitting the output signal of the signal processing module.Type: GrantFiled: June 2, 2006Date of Patent: September 21, 2010Assignee: ZF Friedrichshafen AGInventors: Rainer BĂ¼rker, Mario Steinborn
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Patent number: 7797089Abstract: A system and method for managing a power source in a vehicle having an engine and an electric machine includes setting first and second discharge limits for the power source, where the second discharge limit is higher than the first discharge limit. A buffer value is determined as a function of at least the second discharge limit and an engine-on power requirement. A driver demand for power is determined, and the engine is started when the engine is off and the driver demand for power exceeds the buffer value.Type: GrantFiled: March 30, 2006Date of Patent: September 14, 2010Assignee: Ford Global Technologies, LLCInventor: Shailesh Kozarekar
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Patent number: 7774119Abstract: A shift control system of an automatic transmission and a method thereof include controlling the off-going and on-coming clutches according to hydraulic pressures of the off-going and on-coming clutches calculated based on a flare amount when a flare occurs, controlling the on-coming clutch according to hydraulic pressure of the on-coming clutch calculated based on a shifting time interval when the flare does not occur and the shifting time interval is smaller than or equal to a predetermined time interval, and controlling the off-going and on-coming clutches according to hydraulic pressures of the off-going and on-coming clutches calculated based on an excess rate of change of a turbine speed when the shifting time interval is larger than a predetermined time interval.Type: GrantFiled: March 2, 2009Date of Patent: August 10, 2010Assignee: Hyundai Motor CompanyInventor: Hyun Soo Shim
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Patent number: 7747373Abstract: An ECU (Electronic Control Unit) executes a program including a step of detecting a driver's preference potential Hdr, a step of calculating a target engine output Ptgt using Hdr when a deceleration request is detected, a step of calculating a target slippage tsl using Hdr, a step of calculating a target engine speed tne, a step of calculating a target ISC (Idle Speed Control) opening tidle from Ptgt and tne, a step of assigning a guard value to tidle when tidle is smaller than the guard value, a step of calculating a current engine output Pnow and a step of calculating a motor output (regeneration quantity) Phv from (Ptgt-Pnow).Type: GrantFiled: October 30, 2006Date of Patent: June 29, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventor: Hiroyuki Ogawa
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Patent number: 7739017Abstract: For controlling an automatic transmission having an electronic control unit and having a power control element, the control unit detects a desired-power signal corresponding to the position of the power control element and, basically as a function of this desired-power signal, causes a change of gear corresponding to the characteristic shifting curves stored in the control unit. The control unit also generates a gradient signal corresponding to the rate of change of the desired-power signal and can—when certain conditions exist—cause a backshift deviating from the characteristic shifting curves as a function of this gradient signal. By way of the control unit, an immediate multiple backshift is initiated as a function of the gradient signal when, as a characteristic shifting curve for a first backshift has been reached, the gradient signal has exceeded at least a first lower limit value.Type: GrantFiled: November 29, 2006Date of Patent: June 15, 2010Assignee: Bayerische Motoren Werke AktiengesellschaftInventors: Markus Pfisterer, Matthias Reichler
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Patent number: 7720587Abstract: A method for variable operation of a vehicle transmission using rough road sensing includes defining a first set of parameters to calibrate the vehicle transmission for a smooth road condition and a second set of parameters to calibrate the vehicle transmission for a rough road condition. The method includes sensing a road condition, generating a road condition signal corresponding to the road condition, and measuring a magnitude of the road condition signal. The method includes switching from the first set of parameters to the second set of parameters to operate the vehicle transmission when the magnitude of the road condition signal exceeds a first predetermined threshold. The method includes switching from the second set of parameters to the first set of parameters to operate the vehicle transmission when the magnitude of the road condition signal is less than a second predetermined threshold that is different than the first predetermined threshold.Type: GrantFiled: March 14, 2006Date of Patent: May 18, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Mike M. McDonald, William C. Albertson, Keith D. Van Maanen
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Patent number: 7713166Abstract: Systems and methods for efficiently and effectively controlling the rate of change of ratio, not simply the ratio, in a CVT. By controlling the rate of change of ratio, the acceleration or deceleration of a vehicle can be controlled in an efficient manner. Furthermore, the rate of change of ratio can be controlled by controlling the clamping pressure of the pulleys and/or differential pressure between the pulleys with minimal slip by using a servo control mechanism adapted for control by a system controller based on equilibrium mapping and other control parameters.Type: GrantFiled: July 30, 2007Date of Patent: May 11, 2010Assignee: The Regents of the University of CaliforniaInventors: Andrew A. Frank, Thomas Dreumont
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Patent number: 7706951Abstract: A shift control system of an automatic transmission and a method thereof include controlling the off-going and on-coming clutches according to hydraulic pressures of the off-going and on-coming clutches calculated based on a flare amount when a flare occurs, controlling the on-coming clutch according to hydraulic pressure of the on-coming clutch calculated based on a shifting time interval when the flare does not occur and the shifting time interval is smaller than or equal to a predetermined time interval, and controlling the off-going and on-coming clutches according to hydraulic pressures of the off-going and on-coming clutches calculated based on an excess rate of change of a turbine speed when the shifting time interval is larger than a predetermined time interval.Type: GrantFiled: August 24, 2006Date of Patent: April 27, 2010Assignee: Hyundai Motor CompanyInventor: Hyun Soo Shim
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Patent number: 7699750Abstract: A method for controlling a partially unsynchronized manual transmission, which realizes the increase of a rotational speed of a transmission part to be synchronized during a gear change procedure by connecting one element of the transmission, via a shiftable clutch, to a drive motor and by making available to this drive motor the required rotational speed as well as the necessary torque at its output shaft. It is also provided that when the rotational speed and/or the torque made available by the drive motor is not sufficient to ensure the synchronization of the manual transmission within a fixed time period, a shifting strategy is pursued, which prevents an unintentional holding of the manual transmission in its neutral position or idle position.Type: GrantFiled: December 2, 2005Date of Patent: April 20, 2010Assignee: ZF Friedrichshafen AGInventors: Reinhard Mertinkat, Rainer Petzold, Andreas Wolf, Gerd Sauermann, Klaus Hensinger, Wolfgang Gröner, Ulrich Reith
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Patent number: 7693637Abstract: A vehicle control system is comprised of a controller which is arranged to select an optimal mode adapted to a driving point of a vehicle from an optimal mode map of defining a plurality of running modes of the vehicle, to detect a generation of a mode transition in the optimal mode map, and to hold a current running mode selected before the transition for a holding time period when the generation of the mode transition is detected.Type: GrantFiled: July 1, 2005Date of Patent: April 6, 2010Assignee: Nissan Motor Co., Ltd.Inventors: Michel Mensler, Shinichiro Joe
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Patent number: 7678014Abstract: A control apparatus for a vehicular power transmitting system including an electrically controlled differential portion having an electric motor, and an automatic transmission portion, the control apparatus including shift control portion operable upon determination that a jump shift-down action of the automatic transmission portion directly to a target gear position while skipping at least one intermediate gear position should take place and upon inhibition of the jump shift-down action, to generate a shifting command to perform the jump shift-down action when total jump-shift-down-action time required for the jump shift-down action is shorter than total sequential-shift-down-operation time required for a sequential shift-down operation consisting of a shift-down action to each intermediate gear position and a shift-down action from the last intermediate gear position to the target gear position, and a shifting command to perform the sequential shift-down operation when the total jump-shift-down-action timeType: GrantFiled: January 28, 2009Date of Patent: March 16, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Hideharu Nohara, Toshinari Suzuki
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Patent number: 7678015Abstract: A power train control system for a mobile machine is disclosed. The power train control system has a power source configured to produce a power output, a transmission device operatively connected to receive the power output and propel the mobile machine, and a control module. The control module is configured to receive an indication of a power demand, receive an indication of a current travel speed of the mobile machine, and reference the power demand and the current travel speed with a power train efficiency map to determine a desired power source speed. The power train control system is also configured to control operation of the transmission device to bring a speed of the power source within a predetermined amount of the desired power source speed.Type: GrantFiled: November 17, 2006Date of Patent: March 16, 2010Assignees: Caterpillar Inc., Eaton CorporationInventors: Steven J. Funke, Jason K. Bloms, Thomas J. Crowell, Scott A. Leman, James R. Weber, Jeff Skorupski, Tom Genise, Rich Nellums, Daniel G. Smedley, Donald Speranza
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Patent number: 7680575Abstract: A transmission control system for a vehicle includes a driver input device that generates a driver input signal and a control module that receives the driver input signal. The control module determines an operating mode of a transmission based on the driver input signal and selects a gear ratio of the transmission based on the operating mode. The operating mode includes one of a maximum performance mode, a power mode and a fuel economy mode.Type: GrantFiled: January 7, 2005Date of Patent: March 16, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Ed E. Han, Joseph L. Wanamaker
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Publication number: 20100010717Abstract: A control device executes a gear change control based on a first gear change map, in which the accelerator operation amount and the vehicle speed are used as parameters to define gear change timings, if a brake device is not actuated while the vehicle is running, and executes the gear change control based on a second gear change map, in which the brake actuation pressure and the vehicle speed are used as parameters to define gear change timings that positively utilize engine braking, if the brake device is actuated while the vehicle is running. The control device allows an automatic transmission to execute the gear change control in which engine braking is positively utilized according to conditions, contributing to diversified gear change control.Type: ApplicationFiled: March 6, 2008Publication date: January 14, 2010Applicant: Toyota Jidosha Kabushiki KaishaInventor: Yasuhiro Maeda
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Publication number: 20090312922Abstract: A clutch control device includes: a plurality of hydraulic clutches built into a transmission; a clutch switching pattern storage device in which a plurality of clutch switching patterns, each defining engage/release changeover timing with which the plurality of hydraulic clutches are engaged/released are stored in correspondence to individual speed change patterns adopted by the transmission; a clutch switching pattern selection device that selects a clutch switching pattern stored in the clutch switching pattern storage device in correspondence to a speed change pattern for the transmission at a time of speed change; and a hydraulic control device that executes hydraulic control for the plurality of hydraulic clutches in correspondence to the clutch switching pattern selected by the clutch switching pattern selection device.Type: ApplicationFiled: April 26, 2006Publication date: December 17, 2009Applicants: TCM Corporation, Hitachi Construction Machinery Co., LtdInventors: Tetsuji Tanaka, Masami Higaki, Hideo Nakayama, Eiichi Sakai, Hidenobu Tsukada
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Patent number: 7627411Abstract: A control apparatus for controlling a step-variable automatic transmission of a vehicle to effect a shifting action of the automatic transmission on the basis of a target throttle valve opening angle for realizing a target vehicle drive force, so as to prevent a shift hunting phenomenon of the automatic transmission.Type: GrantFiled: February 2, 2006Date of Patent: December 1, 2009Assignee: Toyota Jidosha Kabushiki KaishaInventors: Seiji Kuwahara, Masato Kaigawa
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Publication number: 20090292430Abstract: A shift controller includes: a shift control unit automatically shifting gears of an automatic transmission using a basic shift line map; a shift line map switching control unit switching from the basic shift line map to a high fluid temperature shift line map set on a lower vehicle speed side when a hydraulic fluid temperature in the automatic transmission is higher than a predetermined value; and a low power state determination unit determining whether a vehicle is in a low power state in which a required power related value used for gear shift determination is lower than a predetermined determination value. The shift line map switching control unit switches from the high fluid temperature shift line map back to the basic shift line map when the hydraulic fluid temperature is lower than the predetermined value and the vehicle is in the low power state.Type: ApplicationFiled: May 18, 2009Publication date: November 26, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hiroyuki SAWADA, Masato Kaigawa, Kei Kitajima, Yoshio Hasegawa, Fuminori Monji
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Publication number: 20090292429Abstract: In a motor vehicle having a clutch and a transmission, an additional shift command is accepted during an already ongoing shift operation, thereby providing control that makes possible a responsive shift operation. When a shift command is issued during an ongoing shift operation and engagement operation of the clutch, the disengagement operation of the clutch and the dog insert operation of the transmission are conducted according a second schedule so that the dog insert operation of the transmission is conducted during the disengagement operation of the clutch, and a second shift operation including the re-engagement of the clutch is conducted.Type: ApplicationFiled: April 15, 2009Publication date: November 26, 2009Inventor: Toru Zenno