Engine Output Control Patents (Class 701/54)
  • Patent number: 9878707
    Abstract: A hybrid vehicle control device is provided for controlling a drive system. The hybrid vehicle control device is programmed to perform an engine start control using a motor/generator as an engine start motor when an engine start request is present. The hybrid vehicle control device includes a second clutch control section and an engine start control section. The second clutch control section completely disengages the second clutch. The engine start control section engages or slip engages of the first clutch, and performs engine start control resulting from performing an engine cranking operation, injecting air and fuel and igniting same. The hybrid vehicle control module disengages the first clutch and engages the second clutch during coasting/regenerating driving with the motor/generator while traveling in an electric vehicle mode when the engine start request is due to a driver input for an increase in a required driving force.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: January 30, 2018
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Ryosuke Ito, Takao Ando, Hiroki Iwasa
  • Patent number: 9850962
    Abstract: A rotary coupling (200) for an all-wheel drive vehicle includes a housing (210), an input part (212), an output part (214), and a clutch (220) disposed within a clutch area (222) of the housing (210) and is movable between an engaged position and a disengaged position to change an amount of torque transferred from the input part (212) to the output part (214). A fluid reservoir (260) is defined in the housing (210). A lubrication valve (250) is movable between an open position and a closed position for controlling supply of a fluid from the fluid reservoir (260) to the clutch area (222) of the housing (210). An actuator (238) is connected to the clutch (220) to move the clutch (220) between the engaged position and the disengaged position and connected to the lubrication valve (250) to move the lubrication valve (250) between the open position and the closed position.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: December 26, 2017
    Assignee: BorgWarner Inc.
    Inventor: Larry A. Pritchard
  • Patent number: 9822875
    Abstract: A shifting control method for a vehicle with a Double Clutch Transmission (DCT), may include determining whether a manual range power-on up shift has been started, determining whether an actual shifting period has been started, when the manual range power-on up shift has been started, and applying additional predetermined compensation torque to basic torque applied to an engagement-side clutch, when the actual shifting period has been started.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: November 21, 2017
    Assignees: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Sung Hyun Cho, Hwan Hur
  • Patent number: 9739369
    Abstract: A method for selecting a gear when Start-Stop Coasting (SSC) is released may include: determining whether a traveling vehicle satisfies a condition for releasing SSC after entry into SSC (S100); selecting a gear input to a transmission (S200) when the traveling vehicle satisfies the condition for releasing SSC after entry into SSC; determining a road gradient (S300) when the traveling vehicle satisfies the condition for releasing SSC after entry into SSC; and correcting the selected gear according to a pre-stored correction map so as to correspond to the determined road gradient.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: August 22, 2017
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Hyung-Ju Lee, Kyu-Jin Jo, Seong-Kyu Park
  • Patent number: 9694820
    Abstract: A SSC control method includes a condition satisfaction determination step of determining whether a vehicle can coast and a navigation information acquisition step of obtaining forward road information regarding a road section ahead of a current vehicle position when it is determined, in the condition satisfaction determination step, that the vehicle can coast. The method further includes a forward quick turn section determination step of determining whether a quick turn section exists in the road section ahead by using the forward road information obtained in the navigation information acquisition step, and an SSC entry step of controlling the vehicle to coast when it is determined in the forward quick turn section determination step that the quick turn section does not exist in the road section ahead.
    Type: Grant
    Filed: October 9, 2015
    Date of Patent: July 4, 2017
    Assignee: Hyundai Motor Company
    Inventors: Hyung-Ju Lee, Kyu-Jin Jo, Seong-Kyu Park, Jae-Woong Yoo
  • Patent number: 9689319
    Abstract: A power system is disclosed as having a power source, a transmission configured to receive a torque output from the power source and to drive a traction device, and an operator input device. The power system may also have a controller configured to reference a signal from the operator input device with a map stored in memory to determine a corresponding speed of the power source, and to determine a margin between an actual and a maximum available torque output of the power source at a current speed. The controller may also be configured to selectively adjust a speed of the power source mapped to the maximum displaced position of the operator input device based on the margin, and to selectively adjust fueling of the power source at a current displacement position of the operator input device and operation of the transmission based on the signal and map.
    Type: Grant
    Filed: September 12, 2014
    Date of Patent: June 27, 2017
    Assignee: Caterpillar Inc.
    Inventors: Brian Douglas Hoff, Mark Edward Rettig, Suman Goli
  • Patent number: 9682705
    Abstract: A vehicle includes an engine with auto-stop and auto-start functions. The vehicle additionally includes a braking system configured to apply braking torque to vehicle wheels. The vehicle further includes a controller configured to control the engine and braking system via an ACC system in response to a detected forward object. The controller is configured to automatically control the braking system in response to a distance to the detected forward object falling below a first predefined threshold and a vehicle speed falling below a second predefined threshold. In response to these inputs, the controller automatically controls the braking system to apply a braking torque to hold the vehicle stationary in the absence of powertrain torque based on a current road grade. The controller additionally controls the engine to auto-stop in response to these inputs.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: June 20, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Hafiz Shafeek Khafagy, Kirk Pebley, Aaron L. Mills, Chad Michael Korte
  • Patent number: 9677530
    Abstract: A system and method for controlling an internal combustion engine include anticipating vehicle launch in response to vehicle position relative to a traffic stream and controlling automatic restart and shut down in response to an anticipated vehicle launch to prevent an automatic engine shut down or to initiate an automatic engine restart. Embodiments include determining vehicle position and traffic position using GPS coordinates. Automatic restart may be initiated in response to movement of a forward vehicle away from the vehicle or in response to a signal from a traffic control device, for example. Automatic shutdown may be inhibited in response to movement of a forward vehicle in cross traffic, in response to a turn indicator being active, or in response to wheel angle, for example.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: June 13, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Alexander O'Connor Gibson, Ilya Vladimir Kolmanovsky, Donald Lewis
  • Patent number: 9649926
    Abstract: A power transmission device for a hybrid vehicle includes: a transmission device that includes a carrier to which an engine rotation shaft is connected; a differential device that includes a plurality of rotation components individually connected to a drive wheel, an MG2 rotation shaft, an MG1 rotation shaft, and a ring gear of the transmission device; a gear shift adjustment device that is able to control the transmission device to a neutral state where the transmission of power between the carrier and the ring gear is not allowed or to a state where the transmission of power is allowed; and an HVECU that includes a first step of controlling the transmission device to the neutral state in a state where the transmission of power between the carrier and the ring gear is allowed.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: May 16, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shunya Kato, Atsushi Tabata, Tatsuya Imamura, Tooru Matsubara, Takeshi Kitahata, Kenta Kumazaki, Yasuhiro Hiasa, Hiroyuki Shioiri, Hiroyuki Shibata
  • Patent number: 9631721
    Abstract: Oil pressure is produced by an electrical pump during an engine operation is temporarily stopped according to an idling-stop function and respectively supplied to multiple electromagnetic valves. A command value for a drive current is supplied to each of a driver circuit in order to adjust the oil pressure to be outputted from the corresponding electromagnetic valve. Such adjusted oil pressure is applied to a corresponding gear-change element and an oil-pressure a detecting device detects the oil pressure applied to the gear-change element to obtain detection value for the oil pressure. A current-command characteristic for each of the electromagnetic valves is updated based on the command value of the drive current and the detection value of the oil pressure.
    Type: Grant
    Filed: July 17, 2015
    Date of Patent: April 25, 2017
    Assignee: DENSO CORPORATION
    Inventor: Akira Takagi
  • Patent number: 9631723
    Abstract: When a vehicle driver selects reverse while a vehicle is moving forward, a transmission controller applies friction shift elements within the transmission to create a partial tie-up condition to decelerate the vehicle. Once the vehicle slows below a threshold speed, the controller engages a selectable one way brake and releases some of the friction shift elements to engage a reverse gear ratio.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: April 25, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Karl M. Jungbluth, Christopher Marcus Williams, Kurt Howard Nickerson
  • Patent number: 9623851
    Abstract: Some embodiments are directed to a brake system for use with a vehicle. The brake system can include a sensor that is configured to sense at least one condition relating to interaction between at least one wheel of the vehicle and a surface upon which the vehicle travels. A controller can receive data from the sensor and be configured to instruct a brake modulator to cause a front brake assembly to modulate the speed of rotation of a front wheel via one of a normal mode and a pulsing mode based on the sensed data. The controller can also be configured to instruct the brake modulator to cause a rear brake assembly to modulate the speed of rotation of a rear wheel via the pulsing mode if the front brake assembly is engaged in reducing the speed of rotation of the front wheel via the pulsing mode.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: April 18, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Christopher J. Cymbal
  • Patent number: 9610951
    Abstract: A method of operating a drive train of a motor vehicle is provided, wherein the drive train has a drive motor and an automatic or automated transmission connected between the drive motor and the drive wheels. The transmission automatically changes gear in an automatic mode. The transmission changes to a higher or lower gear in a manual mode on the basis of an up-shift or a down-shift requested by the driver via control element. At least in automatic mode, a coasting mode of the drive train, in which the operative connection between drive motor and drive wheels is separated, is engaged under defined operating conditions and the coasting mode is disengaged upon the driver requesting a downshift and the manual mode of the transmission is engaged. The coasting mode is maintained in automatic mode in the case of the driver requesting an up-shift during coasting mode.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: April 4, 2017
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventor: Thiemo Pasenau
  • Patent number: 9573486
    Abstract: An electrical apparatus for powering an electrical machine with two different energy sources includes an electrical drive system having a battery and a super capacitor, and an electrical machine, wherein the electrical machine includes a rotor, a first separate multi-phase stator winding and a second separate multi-phase stator winding, wherein the drive system includes a first multi-phase bridge inverter connected to the first multi-phase stator winding, and wherein the apparatus further includes a second multi-phase bridge inverter connected to the second multi-phase stator winding and to the battery, where the first multi-phase bridge inverter is connected to a super capacitor, and where the drive system includes a switch adapted to connect and disconnect the DC links of the first multi-phase bridge inverter to and from the second multi-phase bridge inverter.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: February 21, 2017
    Assignee: Volvo Lastvagnar AB
    Inventors: Erik Hoevenaars, Mats Alakula
  • Patent number: 9573582
    Abstract: A control device of a continuously variable transmission for a vehicle to which power of a drive force source is input through a transmission path connecting/disconnecting device changes a gear ratio of the continuously variable transmission to a lower vehicle speed side during vehicle deceleration when the transmission path connecting/disconnecting device is in a power transmission interrupted state of interrupting power transmission through a power transmission path between the drive force source and the continuously variable transmission, earlier as compared to when the transmission path connecting/disconnecting device is in a power transmittable state enabling the power transmission, and the control device changes a gear ratio of the continuously variable transmission earlier to the lower vehicle speed side when vehicle deceleration is larger, when the transmission path connecting/disconnecting device is in the power transmission interrupted state.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: February 21, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shuhei Ishikawa, Motonori Kimura, Atsushi Ayabe, Shinya Toyoda
  • Patent number: 9567920
    Abstract: Rev-matching techniques that do not require a gear position sensor or a clutch position sensor are provided for a manual transmission of a vehicle. The techniques include predicting an intent of a driver to shift gears of the manual transmission based on whether the vehicle is accelerating or decelerating; predicting a shift of the manual transmission from a current gear to a different target gear based on the predicted driver intent; and detecting a trigger condition indicative of the predicted shift of the manual transmission based on a position of a clutch pedal configured to control engagement/disengagement of a clutch of the manual transmission. In response to detecting the trigger condition, a torque request for the torque generating system is modified to obtain a modified torque request, and the torque generating system is controlled based on the modified torque request.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: February 14, 2017
    Assignee: FCA US LLC
    Inventors: Craig B Ashmore, Brace H Bade, Ryan Masters, Robert Stack
  • Patent number: 9511774
    Abstract: A shift control device includes a kick-down control unit that, in the case where the accelerator is depressed to a certain level or beyond, executes a first kick-down mode, in which a gear ratio of the continuously variable transmission is changed to a low side to increase the engine speed. In the case where, during execution of the first kick-down mode, a switchover operation is accepted to switch the output properties such that output of the engine is increased, the kick-down control unit again determines whether or not to start the first kick-down control again.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: December 6, 2016
    Assignee: FUJI JUKOGYO KABUSHIKI KAISHA
    Inventors: Yasuhito Minamisawa, Keisuke Ajimoto
  • Patent number: 9493160
    Abstract: A vehicle speed control system for a vehicle having a plurality of wheels, the vehicle speed control system comprising one or more electronic control units configured to carry out a method that includes applying torque to at least one of the plurality of wheels, detecting a slip event between any one or more of the wheels and the ground over which the vehicle is travelling when the vehicle is in motion and providing a slip detection output signal in the event thereof. The method carried out by the one or more electronic control units further includes receiving a user input of a target speed at which the vehicle is intended to travel and maintaining the vehicle at the target speed independently of the slip detection output signal by adjusting the amount of torque applied to the at least one of the plurality of wheels.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: November 15, 2016
    Assignee: Jaguar Land Rover Limited
    Inventors: James Kelly, Andrew Fairgrieve, Daniel Woolliscroft
  • Patent number: 9489850
    Abstract: In a method for engine torque adjustment of a propulsion engine in a vehicle, the vehicle surroundings are monitored with the aid of surroundings sensors, the actual engine torque being reduced with regard to the torque intended by the driver when an obstacle is recognized.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: November 8, 2016
    Assignee: ROBERT BOSCH GMBH
    Inventor: Eike Bimczok
  • Patent number: 9469973
    Abstract: A wheel loader includes detectors and a controller. The detectors include at least an accelerator pedal angle detector that detects an accelerator displacement. The controller includes: a state judging unit that judges from a detection result provided by the detectors whether or not the wheel loader is in an excavation operation; and a torque-curve selector. The torque-curve selector selects one excavation torque curve when the wheel loader is judged to be in the excavation operation by the state judging unit, and selects one of two or more non-excavation torque curves depending on the accelerator displacement when the wheel loader is judged not to be in the excavation operation.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: October 18, 2016
    Assignee: Komatsu Ltd.
    Inventors: Masaaki Imaizumi, Minoru Wada
  • Patent number: 9463802
    Abstract: A control method for shifting in a manual transmission vehicle may include sensing tip-out while the vehicle travels; operating a tip-out torque filter when the tip-out is sensed; determining whether a switch of a clutch of the vehicle is turned on; stopping fuel injection by stopping the tip-out torque filter when the switch of the clutch is turned on, and reducing rotation speed of an engine by controlling a throttle flap of the vehicle.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: October 11, 2016
    Assignee: Hyundai Motor Company
    Inventors: Chang Kook Chae, Heungseok Lee, Sukil Oh, Wan Soo Oh, Jin Hyun Kim, Koo Tae Kang
  • Patent number: 9365204
    Abstract: A method for operating a multi-mode powertrain system includes monitoring an operator request for tractive power, and arbitrating the operator request for tractive power with axle torque constraints and crankshaft torque constraints. An immediate tractive torque request and a predicted tractive torque request are determined based upon the arbitrated operator request for tractive power. The predicted tractive torque request is shaped based upon driveability torque constraints. Operation of torque-generative devices of the multi-mode powertrain system are controlled based upon the predicted tractive torque request and the driveability-shaped predicted tractive torque request.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: June 14, 2016
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Christopher E. Whitney, Anthony H. Heap
  • Patent number: 9361272
    Abstract: A vehicle powertrain controller includes a fuzzy logic-based adaptive algorithm with a learning capability that estimates a driver's long term driving preferences. An adaptive algorithm arbitrates competing requirements for good fuel economy, avoidance of intrusiveness and vehicle drivability. A driver's acceptance or rejection of advisory information may be used to adapt subsequent advisory information to the driving style. Vehicle performance is maintained in accordance with a driver's driving style.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: June 7, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Fazal Urrahman Syed, Dimitar Petrov Filev, Finn Tseng
  • Patent number: 9353693
    Abstract: A vehicle control device includes an engine that is a power source of a vehicle, an electrical storage device, a starting device connected to the electrical storage device and configured to consume electrical power to start the engine, and a power steering device connected to the electrical storage device and configured to consume electrical power to generate an assist torque, wherein an engine stop control of causing the engine to be in a stopped state is executable during travelling of the vehicle, and the engine stop control is prohibited in at least one of time of turning of the vehicle, time of steering of the vehicle during travelling, and time of generating an assist torque during travelling.
    Type: Grant
    Filed: September 13, 2010
    Date of Patent: May 31, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hirokazu Kato
  • Patent number: 9352749
    Abstract: A control system of a vehicle comprises a torque sensor, a vehicle direction module, and a control module. The torque sensor determines a driveline torque signal based on a torque produced by a device of a driveline. The vehicle direction module determines whether a vehicle direction includes one of a forward direction and a reverse direction based on the driveline torque signal. The control module controls the vehicle based on the vehicle direction.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: May 31, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Randall B. Dlugoss, Micheal P. Portell
  • Patent number: 9340196
    Abstract: Under a specified condition where a torque converter is kept in a lockup state to prolong the fuel-cutoff time, because of vehicle coasting with an accelerator opening APO=0, a downshift command is generated and then an automatic transmission causes a reengagement downshift by a drop in a release-side clutch hydraulic pressure Poff and a rise in an engagement-side clutch hydraulic pressure Pon. During the reengagement downshift, the engagement-side clutch hydraulic pressure Pon is reduced from a high lockup-ON hydraulic pressure to a low lockup-OFF hydraulic pressure after the time when the lockup is predicted to be released, thus preventing a torque drawing-in tendency of transmission output torque, which may occur at the time of the beginning of the inertia phase, from increasing, and also reducing in the width of a subsequent change in vehicle deceleration G, and consequently enhancing the shift quality.
    Type: Grant
    Filed: June 13, 2012
    Date of Patent: May 17, 2016
    Assignees: NISSAN MOTOR CO., LTD., JATCO LTD
    Inventors: Yoshinobu Kawamoto, Hiroyuki Takenaka, Go Endo
  • Patent number: 9321355
    Abstract: A method of operating an electric vehicle may include determining an angle of inclination of the electric vehicle, and selecting rates of regenerative braking corresponding to multiple brake pedal positions based on the determined angle of inclination.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: April 26, 2016
    Assignee: Proterra Inc.
    Inventor: Keyur M. Shah
  • Patent number: 9316167
    Abstract: A vehicle equipped with a hydraulically-operated device includes an engine that drives the hydraulically-operated device, a temperature detection unit that detects a temperature of the engine or hydraulic oil and a control unit that controls the engine. The control unit is allowed to control torque of the engine in accordance with a predetermined specified torque limit value when the control unit is in an Eco-mode, and does not control the torque of the engine in accordance with the specified torque limit value in the Eco-mode when the temperature detected by the temperature detection unit is a predetermined specified release temperature or lower. The release temperature is set as a temperature at which output of the engine is hard to be stabilized.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: April 19, 2016
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Norihiko Kato, Yukikazu Koide
  • Patent number: 9297323
    Abstract: An unlock operation of a lockup clutch and a shift-up operation of an automatic transmission are performed together when an accelerator pedal of a vehicle is released in a state where the lockup clutch is in a lockup state. An engine rotation speed immediately after the shift-up operation is estimated on the basis of the engine rotation speed and a gear ratio of the automatic transmission after the shift-up operation. If a fuel recovery operation is predicted to be performed immediately after the shift-up operation, the fuel-cut operation is prevented, thereby suppressing a shock from occurring due to the fuel recovery when a foot release shift-up operation is performed.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: March 29, 2016
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Yoshinobu Kawamoto, Masahiro Iriyama
  • Patent number: 9284902
    Abstract: A difference module determines a difference between an engine speed and a transmission input shaft speed. A state control module sets a signal to a first state when a driver releases an accelerator pedal and selectively transitions the signal from the first state to a second state when the difference is less than zero. An immediate torque request module decreases an engine torque request when the signal is in the first state and selectively increases the engine torque request when the signal is in the second state. At least one of: a spark control module that selectively adjusts spark timing based on the engine torque request; and a fuel control module that selectively adjusts fueling based on the engine torque request.
    Type: Grant
    Filed: August 16, 2013
    Date of Patent: March 15, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Bret J. Keller, Krishnendu Kar
  • Patent number: 9284910
    Abstract: A vehicle control device for controlling a vehicle includes a drive source control unit adapted to output a command for automatically stopping a drive source when a first predetermined condition is satisfied and output a command for restarting the drive source when a second predetermined condition is not satisfied after the command for automatically stopping the drive source is output, a drive source restart determination unit adapted to determine that the drive source has restarted when a third predetermined condition is satisfied after the command for restarting the drive source is output, and a restart determination prohibition unit adapted to prohibit a restart determination by the drive source restart determination unit at least until the third predetermined condition is no longer satisfied when the third predetermined condition is satisfied and the command for restarting the drive source is output.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: March 15, 2016
    Assignee: JATCO LTD
    Inventors: Keichi Tatewaki, Masayuki Miyazono, Hideshi Wakayama
  • Patent number: 9279496
    Abstract: A frictional engagement element (32) that disconnects power between an engine (1) and a drive wheel (7) in a vehicle, and a control unit (11, 12) that controls a transmission ratio of a continuously variable transmission (4) and the frictional engagement element (32), are provided. When the transmission ratio is not a maximum transmission ratio at a vehicle stop when a vehicle speed is 0, the control unit (11, 12) operates the transmission ratio to the maximum transmission ratio while controlling the frictional engagement element (32) into a slip state. Further, at this time, when a road is an upward slope, the control unit (11, 12) sets an engagement pressure of the frictional engagement element (32) and an engine torque according to the road slope, prevents slide-down of the vehicle.
    Type: Grant
    Filed: April 1, 2013
    Date of Patent: March 8, 2016
    Assignee: JATCO LTD
    Inventors: Youngjoo Woo, Jongkeun Lim, Junseok Choi, Changnam Park, MyongSeog Chang
  • Patent number: 9260108
    Abstract: A method for controlling a hybrid powertrain includes the following steps: (a) receiving, via a control module, a torque request; (b) commanding, via the control module, the first clutch of an automatic transmission to shift to a disengaged position in response to the torque request; (c) commanding, via the control module, an electric motor-generator to transmit torque to an internal combustion engine until a speed of a second clutch is substantially synchronized with a speed of the internal combustion engine; and (d) commanding, via the control module, the second clutch to shift to the engaged position after the speed of the second clutch is substantially synchronized with the speed of the internal combustion engine. The automatic transmission shifts a transmission speed ratio from an initial speed ratio to a subsequent speed ratio when the second clutch is in the engaged position.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: February 16, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Lan Wang, Min-Joong Kim, Todd Thor
  • Patent number: 9242545
    Abstract: A method of executing a downshift in a fixed-gear powertrain having an input node and an output node related by a starting speed ratio before the downshift and a finishing speed ratio after is provided. The downshift includes a torque phase and an inertia phase. A starting output torque is calculated as a function of a starting driver request. An electric machine applies a starting regenerative input torque which is calculated as substantially equal to the starting output torque divided by the starting speed ratio. A finishing output torque is calculated as a function of a finishing driver request. The electric machine applies a finishing regenerative input torque which is calculated as substantially equal to the finishing output torque divided by the finishing speed ratio.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: January 26, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Craig J. Hawkins, Adam J. Heisel, Christopher E. Whitney, Matthew D. Whitton, Roger Joseph Rademacher, Keith D. Van Maanen
  • Patent number: 9227619
    Abstract: A vehicle control method for a vehicle having an internal combustion engine coupled to a torque converter is described. In one embodiment, the engine air flow and spark are adjusted to control torque converter operation. The method can improve vehicle response to driver accelerator commands.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: January 5, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Jeff Doering, Bradley D Riedle, Rob Ciarrocchi, Scott Redmon, Hank Kwong, William Eckenrode, Frederick Page
  • Patent number: 9216738
    Abstract: A system and method are provided for maintaining hydraulic steering for a machine during engine out or engine lugging conditions. The machine includes a torque-controlled transmission driven by an engine, the engine further being linked to a hydraulic steering pump that provides hydraulic power to a steering actuator. The machine may be, for example, a wheel loader or an off highway truck. The system and method include detecting an undesirable reduction of engine speed while the machine is travelling, and responsively reducing the transmission power to maintain the engine speed at a desired level to power the hydraulic steering pump. When the reduced requested transmission power reaches zero, a power reversal through the transmission is commanded to maintain the engine speed at the desired level to power the hydraulic steering pump.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: December 22, 2015
    Assignee: Caterpillar Inc.
    Inventors: Brian D. Kuras, Michael J. Barngrover
  • Patent number: 9212924
    Abstract: A rich set of inter-transportation-mode transitions can be supported. For example, when generating a route from a starting location to a destination, transitions to or from walking can be included that are immediately discernable by the traveler without reference to compass directions. Further functionality, such as support for multiple doors of a transit vehicle can be supported. An overall improved user experience and fewer errors for travelers who combine different transportation modes into their trips can result.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: December 15, 2015
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventor: Elizabeth Salowitz
  • Patent number: 9194705
    Abstract: A method for routing in a network including a plurality of nodes and links between nodes, includes the steps of: setting a start node and a destination node; for each node, assigning a waiting time distribution for at least one means of transport for at least one intermediate node between the start node and the destination node; and providing a list of alternative means of transport linking the intermediate node to a subsequent node as a function of the waiting time distribution assigned to the at least one means of transport at the intermediate node.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: November 24, 2015
    Assignee: International Business Machines Corporation
    Inventor: Tim Nonner
  • Patent number: 9188223
    Abstract: A shift indication system for a vehicle is provided. The shift indication system includes a haptic feedback device and a controller programmed to activate the haptic feedback device in response to an engine speed traversing a predetermined threshold. The haptic feedback device is activated with a first pattern if the speed is increasing to prompt a vehicle operator to perform an upshift and a second pattern if the speed is decreasing to prompt a vehicle operator to perform a downshift.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: November 17, 2015
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventor: Jamel Seagraves
  • Patent number: 9187075
    Abstract: A method is provided for protecting an all-wheel drive clutch of a two-axle vehicle with clutch-controlled all-wheel drive. A power braking situation, where both the accelerator pedal and the brake are actuated and the vehicle is stationary or moves only slightly in the vehicle longitudinal direction, may be critical for the all-wheel drive clutch. For example, when the friction coefficient of the primary axle is very small and the wheel braking torque is less than the driving torque, a clutch slip may occur at the all-wheel drive clutch. Upon detecting a power braking situation, a protective measure is implemented against thermal overload of the all-wheel drive clutch, such as reducing or limiting the engine torque output, so that the clutch slip and the energy input into the all-wheel drive clutch are reduced.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: November 17, 2015
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Christian Grain, Axel Wust
  • Patent number: 9182036
    Abstract: A vehicle includes an engine, a transmission having a friction clutch and a binary clutch assembly, and a controller. The controller executes a method to detect the requested shift of the transmission to neutral, and when a set of conditions are satisfied during the requested shift, to automatically decrease a pressure command to the friction clutch such that torque capacity of the friction clutch decreases from a full torque capacity and begins to slip. The controller holds the binary clutch assembly at a calibrated pressure while the friction clutch slips, disengages the binary clutch assembly only when the binary clutch assembly is released and not loaded, and increases the pressure command to the friction clutch to restore full torque capacity to the friction clutch and complete the requested shift to neutral.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: November 10, 2015
    Assignee: GM Global Technology Operations LLC
    Inventor: Nathaniel E. Wilke
  • Patent number: 9162666
    Abstract: A method of braking a vehicle includes determining via a controller a desired braking power for braking the vehicle. Under the method, a bypass valve that controls exhaust gas flow through the exhaust heat recovery device is moved via the controller to a relatively restrictive position to provide at least some of the desired braking power.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 20, 2015
    Assignee: GM Global Technology Operations LLC
    Inventor: Alan G. Holmes
  • Patent number: 9151381
    Abstract: One control mode is selected from a plurality of control modes each setting a target value of a primary pulley revolution speed NIN and prioritized in a predetermined order. When the control mode is changed, the target value of the primary pulley revolution speed NIN is set so as to vary from the target value set in the control mode before change to the target value set in the control mode after change in accordance with the control mode that is higher in priority among the control modes before and after change. A continuously variable transmission is controlled such that the primary pulley revolution speed NIN reaches the set target value.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: October 6, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daisuke Inoue, Akihide Ito, Seiji Kuwahara, Shinya Toyoda, Motonori Kimura
  • Patent number: 9151685
    Abstract: A method for monitoring torque in a gear train includes coincidently determining angles of rotation of first and second rotationally coupled members of the gear train. Each of the members employs a respective rotational position sensor. Each of said angles of rotation are determined based upon times corresponding to a last signal pulse, a next-to-last signal pulse, and a total quantity of signal pulses generated by the respective rotational position sensor during a current sampling interval. A twist angle corresponding to a difference between the angles of rotation of the first and second rotationally coupled members of the gear train is determined, and torque corresponding to the twist angle is calculated.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: October 6, 2015
    Assignees: GM Global Technology Operations LLC, Continental Automotive Systems, Inc.
    Inventors: Dongxu Li, Graeme Whyte, Robert J. Horner, Jerry Paul Sagady, Amin Abboud
  • Patent number: 9126600
    Abstract: A vehicle of a dual clutch type includes a transmission mechanism including a plurality of gears including dog clutches and two clutches, wherein engagement of the gears by the dog clutches is smoothened to prevent shift shock. When receiving a shifting command, a control device sets an engine rotation speed corresponding to a reduction ratio of a next gear level, and a vehicle velocity as a target rotation speed, and controls the engine rotation speed toward a target rotation speed. Also, the control device prevents the engine rotation speed from arriving at the target rotation speed until two gears corresponding to the next gear level are engaged with each other by the dog clutch. The control device brings one clutch close to an engaged state, and the other clutch close to a disengaged state after the engine rotation speed arrives at the target rotation speed.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: September 8, 2015
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Shinya Iizuka
  • Patent number: 9114708
    Abstract: Reference speed values for a vehicle's control system are determined by: determining, using map and location data, route segments, each with route characteristics; performing, simulation cycles, each comprising simulation steps of: predicting the speed when the set speed is imparted as the reference speed; comparing with first lower and upper limit values, which define an engine torque, for use in the next simulation cycle; making a second prediction of the speed when the engine torque is a value that depends on the result of said first comparison in the immediately preceding simulation cycle; comparing the second predicted vehicle speed with second lower and upper limit values, which delineate a range within which the speed is maintained, with an offset added if the vehicle is in a route segment with a steep hill; and determining the reference value based on the second comparison and/or the second predicted vehicle speed.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: August 25, 2015
    Assignee: SCANIA CV AB
    Inventors: Oskar Johansson, Maria Södergren, Fredrik Roos
  • Patent number: 9091219
    Abstract: A control system includes a driver torque determination module, a lash zone torque determination module, a rate limit determination module, and an immediate torque determination module. The driver torque determination module determines a driver torque request when a driver depresses an accelerator pedal while a vehicle is coasting. The lash zone torque determination module determines a lash zone torque based on a transmission gear and an engine speed. The rate limit determination module determines an adjustment rate limit based on a previous immediate torque request, the lash zone torque, and the transmission gear. The immediate torque determination module determines a present immediate torque request based on the driver torque request and selectively determines the present immediate torque request based on the adjustment rate limit.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: July 28, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Krishnendu Kar, Pahngroc Oh, Andrew W. Baur
  • Patent number: 9073429
    Abstract: A method controls an acceleration pedal of a vehicle that calls a driver's attention by causing vibration or increasing pedal effort in the acceleration pedal according to diversified driving situations. The method includes selecting a control mode of selecting, by a driver, a control mode given to the acceleration pedal, judging an eco red state of judging whether the vehicle is driven for a predetermined time in the eco red state, and executing the control mode of giving the control mode selected at the selecting of the control mode to the acceleration pedal when it is judged that the vehicle is driven for the predetermined time in the eco red state at the judging of the eco red state.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: July 7, 2015
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, DONGHEE INDUSTRIAL CO., LTD.
    Inventors: Eunsik Kim, Yangrae Cho, Jongsang Noh
  • Patent number: 9067598
    Abstract: A multi-mode transmission for a powertrain system includes a high-voltage electrical system with a high-voltage battery and high-voltage electrical bus coupled to a power inverter electrically coupled to torque machines configured to transform electric power to torque. A method for controlling the multi-mode transmission includes monitoring voltage and current on the high-voltage electrical bus, and estimating electric power limits for the high-voltage electric bus including a constrained battery power command based upon a total motor torque electrical power for the torque machines. Torque commands for the torque machines are constrained in response to the estimated electric power limits for the high-voltage electric bus. Operation of the torque machines of the multi-mode transmission is controlled in response to the torque commands for the torque machines.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: June 30, 2015
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Sean W. McGrogan, Anthony H. Heap
  • Patent number: 9061664
    Abstract: An antilock brake system for a vehicle having a front axle with right and left front brakes and at least one rear axle with right and left rear brakes is disclosed. The front axle includes a front differential with a front clutch and the rear axle includes a rear differential with a rear clutch. A controller is employed to control the brake torque applied through one or more brake valve assemblies and the controller may further shift brake torque from one wheel of an axle to the other wheel on the axle through a differential clutch valve assembly in the clutch of an open differential which forms part of the axle assembly.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: June 23, 2015
    Assignee: Caterpillar Inc.
    Inventor: Gerard O. McCann