Patents Assigned to GM
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Patent number: 9416869Abstract: A vehicle includes an engine, dual-clutch transmission (DCT), and controller. The controller executes a method to control a requested change-of-mind shift of the DCT to a second desired gear state. The requested shift is initiated after a prior-requested but not yet fully-executed shift of the DCT to a first desired gear state. The controller detects the requested shift, identifies the second desired gear state, and aborts the prior-requested shift immediately upon identifying the second desired gear state. The controller also shifts the DCT to the second desired gear state using a calibrated shift profile corresponding to the detected shift. The calibrated shift profile describes required oncoming and offgoing clutch torques needed for achieving the second desired gear state. Engine speed control may be used to synchronize engine and input shaft speeds.Type: GrantFiled: September 4, 2014Date of Patent: August 16, 2016Assignee: GM Global Technology Operations LLCInventors: Harinath Atmaram, Ronald W. Van Diepen, Matthew D. Whitton, Mateusz Nowak
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Patent number: 9417270Abstract: Disclosed herein are various systems and methods for capturing and utilizing temperature information in a battery pack. An electrical measurement system may be configured to determine a subdivision electrical parameter associated with one or more subdivisions, and a thermal measurement system configured to determine and track a thermal parameter associated with one or more subdivisions. A battery model may utilize the thermal parameter and the electrical parameter to estimate a characteristic of one or more battery subdivisions. In some embodiments, the battery model may further estimate a second thermal parameter of a second subdivision based upon a location of the second subdivision within the battery pack and based on the estimated characteristic of a first subdivision. Some embodiments may further estimate a life assessment of one or more subdivisions based at least in part on the subdivision electrical parameter and the thermal parameter.Type: GrantFiled: January 8, 2013Date of Patent: August 16, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: John T. Guerin, Sudhakar Inguva, Rashed S. Rabaa, Sanjay K. Mahajan, Ramesh Rebba
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Patent number: 9416736Abstract: A method for operating an internal combustion engine includes increasing engine drag torque, transitioning from a cylinder deactivation state to an all-cylinder state, and decreasing engine drag torque immediately subsequent to transitioning to the all-cylinder state.Type: GrantFiled: December 18, 2013Date of Patent: August 16, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Brenton J. Bergkoetter, Christopher E. Whitney, Brian L. Spohn, Sean W. McGrogan
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Patent number: 9418674Abstract: Sound related vehicle information representing one or more sounds may be received in a processor associated with a vehicle. The sound related vehicle information may or may not include an audio signal. An audio signal output to a passenger may be modified based on the sound related vehicle information.Type: GrantFiled: January 17, 2012Date of Patent: August 16, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Eli Tzirkel-Hancock, Omer Tsimhoni
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Patent number: 9416570Abstract: A spring strut assembly comprises a cylinder having a wall defining an interior volume comprising a working end and a boosting chamber; the working end including a first volume and the boosting chamber including a second volume of gas. A piston assembly is disposed for reciprocation in the working end of the interior volume. A piston rod has a proximal end secured to the piston and a distal end projecting out of a first end of the cylinder. A temperature control valve assembly is disposed in the interior volume separating the working end from the boosting chamber and a shock absorbing assembly is disposed in the interior volume between the piston assembly and the first end of the cylinder, and is compressible by the piston assembly when the temperature control valve is dislodged by pressure in the boosting chamber thereby driving the piston assembly into the shock absorbing member.Type: GrantFiled: April 7, 2015Date of Patent: August 16, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Joel Colombo, Michael P. Balogh, Graham S. Foulkes
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Patent number: 9419286Abstract: Methods of making a substantially crack-free electrode layer are described. The methods include depositing an electrode ink on a substrate; placing a layer of porous reinforcement layer on a surface of the wet electrode ink; and drying the electrode ink to form the substantially crack-free electrode layer on the substrate. Substantially crack-free electrode layers and fuel cells incorporating substantially crack-free electrode layers are also described.Type: GrantFiled: January 13, 2011Date of Patent: August 16, 2016Assignee: GM Global Technology Operations LLCInventors: Bradley M. Houghtaling, John P. Healy, Scott C. Moose, Scott L. Peters
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Patent number: 9419549Abstract: An inverter electrically operatively connects to a multi-phase electric machine, and a method for controlling the inverter includes executing a six-step mode to control the inverter and monitoring an electric voltage angle of the electric machine at a preset sampling frequency. When the electric voltage angle approaches a step transition associated with control of one of a plurality of switches of the inverter in the six-step mode, an intermediate duty command for the one of the switches is determined and a carrier signal is aligned based upon a present state of the one of the switches. The one of the switches is controlled employing the intermediate duty command and the aligned carrier.Type: GrantFiled: November 14, 2014Date of Patent: August 16, 2016Assignee: GM Global Technology Operations LLCInventors: Jung Sik Yim, Bon Ho Bae
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Patent number: 9415345Abstract: A control method and system for monitoring a selective catalytic reduction (“SCR”) device of an exhaust gas treatment system is disclosed. The method includes monitoring a plurality of operating conditions related to determining an efficiency of the SCR device and a SCR temperature. The method includes determining if each of the operating conditions are within a respective predetermined range and if the SCR temperature is below an operating temperature range. The method includes activating a hydrocarbon supply based on if each of the operating conditions are within the respective predetermined range and if the SCR temperature is below the operating temperature range. The hydrocarbon supply is located upstream of the SCR device to generate heat if activated. The method includes monitoring the SCR temperature to determine if the SCR device is operating within the operating temperature range.Type: GrantFiled: February 6, 2013Date of Patent: August 16, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Timothy J. Holbert, Eric M. Sisco, Janean E. Kowalkowski
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Patent number: 9415725Abstract: A load compartment arrangement for a vehicle is disclosed. The load compartment arrangement includes a board device with a loading board having a flap section pivotably connected to one another. The flap section assumes an upper position such that the loading board is in a low position. Conversely, the flap section assumes a lower position such that the loading board is a high position. The load compartment arrangement includes at least one load compartment-fixed holding device for holding the flap section in the lower position. A basic body of the flap section supports itself in the holding device and is secured in a direction directed towards the load compartment floor in a positively joined manner when the flap section assumes the lower position.Type: GrantFiled: December 2, 2014Date of Patent: August 16, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Thomas Horst, Thilo Schaefer
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Patent number: 9419293Abstract: System and methods for measuring operating parameters of a fuel cell system are presented. In certain embodiments, the systems and methods may be configured to measure a high frequency resistance of a fuel cell system. A method for measuring a high frequency resistance of a fuel cell system may include inducing a current signal and a voltage signal through the FC system at a center frequency using a switched load. The current signal and the voltage signal may then be measured and filtered to isolate the current signal and the voltage signal from noise signals occurring in the FC system. A high frequency resistance of the FC may then be calculated based on the filtered current and voltage signals.Type: GrantFiled: December 19, 2012Date of Patent: August 16, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: David J. Reed, Angelo T. Caruso, Richard P. Corey, Kenneth L. Kaye
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Patent number: 9419314Abstract: System and methods for determining battery system power capability in a vehicle are presented. Peak power capability estimation systems and methods disclosed herein may compensate regressed parameters in a battery system circuit model for an effect of current magnitude. Utilizing the disclosed methods for accurately estimating peak power capability of a battery system may provide for, among other things, improved battery system performance modeling and/or improved battery system control and management decisions.Type: GrantFiled: May 12, 2014Date of Patent: August 16, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Brian J. Koch, Brett B. Stawinski, Patrick Frost, Damon R. Frisch, John E. Novak
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Patent number: 9415666Abstract: In an embodiment, the presently disclosed method for coupling a sunroof assembly to a structural frame of a vehicle includes the following steps: (a) moving a sunroof module and a bond frame of the sunroof assembly through a windshield opening of the structural frame and toward a roof portion of the structural frame; (b) securing the sunroof module to the roof portion of the structural frame; (c) moving a locating fixture downwardly toward the roof portion of the structural frame; (d) inserting the frame pins of the locating fixture in frame pockets of the structural frame; (e) applying a first clamping force to the structural frame and the locating fixture; (f) inserting the sunroof pins of the locating fixture in the sunroof pockets of the bond frame; (g) applying a second clamping force to the bond frame; and (h) securing the bond frame to the sunroof module.Type: GrantFiled: October 29, 2014Date of Patent: August 16, 2016Assignee: GM Global Technology Operations LLCInventors: Gerald M. Bojanowski, James A. Forbes, Craig D. Schroeder
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Patent number: 9416874Abstract: A method for learning the bite point of a position-controlled clutch in a vehicle having an engine and a transmission includes commanding an engagement of a clutch fork via a controller when the transmission is in park and the engine is idling. The method also includes controlling an apply position of the clutch via the controller, calculating a clutch torque capacity of the clutch, and measuring the apply position via a position sensor. The apply position is recorded as the clutch bite point when the calculated clutch torque capacity equals a calibrated clutch torque capacity. The transmission is then controlled using the recorded clutch bite point. A system includes the transmission, input clutches, and a controller configured to execute the method. A vehicle includes an engine, the transmission, the position-controlled input clutch, and the controller, as well as a clutch position sensor.Type: GrantFiled: June 24, 2014Date of Patent: August 16, 2016Assignee: GM Global Technology Operations LLCInventors: David H. Vu, Xuefeng Tim Tao, Jayson S. Schwalm, Craig J. Hawkins, Jeryl McIver
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Patent number: 9416815Abstract: A two-stage stiffness driveshaft includes a hollow cylinder defined by a longitudinal axis, a first end, a distal second end, and a hollow cylinder stiffness. The driveshaft also includes an inner shaft extending through the hollow cylinder along the longitudinal axis and defined by a first end, a distal second end, and an inner shaft stiffness. The first end of the inner shaft is engaged with the first end of the hollow cylinder via a rotational clearance fit. The second end of the inner shaft is rotationally fixed to the second end of the hollow cylinder such that the first end of the inner shaft can twist to a predetermined angle with respect to the second end of the inner shaft. The inner shaft stiffness defines a first-stage stiffness of the driveshaft, and the inner shaft stiffness and the hollow cylinder stiffness together define a second-stage stiffness of the driveshaft.Type: GrantFiled: October 1, 2014Date of Patent: August 16, 2016Assignee: GM Global Technology Operations LLCInventors: Michael J. Grimmer, Mark Gehringer, Stephanie A. Ernster, Eric J. Defenderfer, Stephen H. Miller
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Patent number: 9415628Abstract: Application of carbon fiber reinforced polymer structures to metal vehicle wheels is effective in reducing the mass of the wheel while retaining suitable stiffness in the wheel structure. For maximum effect the reinforced polymer structure and the metal wheel must operate cooperatively. Because of the wide range of operating temperatures experienced by wheels and the large difference in coefficient of thermal expansion between metals and carbon fiber reinforced composites attachment of the polymer structure to the wheel by adhesive alone is problematical. However a wheel with an effective and durable reinforcement may be fabricated by confining, through mechanical interference, the reinforced polymer in a cavity in or on the spoke and by preheating the wheel before curing the polymer.Type: GrantFiled: May 11, 2012Date of Patent: August 16, 2016Assignee: GM Global Technology Operations LLCInventors: Hamid G. Kia, Michael J. Irwin
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Patent number: 9416743Abstract: A target cylinder count module determines a target number of cylinders of an engine to be activated during a future period. The future period includes N sub-periods, and N is an integer greater than one. Based on the target number, a first sequence setting module generates a sequence indicating N target numbers of cylinders to be activated during the N sub-periods, respectively. A second sequence setting module retrieves N predetermined sequences for activating and deactivating cylinders during the N sub-periods, respectively, and generates a target sequence for activating and deactivating cylinders during the future period based on the N predetermined sequences. During the future period, a cylinder actuator module: activates opening of intake and exhaust valves of the cylinders that are to be activated based on the target sequence; and deactivates opening of intake and exhaust valves of the cylinders that are to be deactivated based on the target sequence.Type: GrantFiled: March 13, 2013Date of Patent: August 16, 2016Assignee: GM Global Technology Operations LLCInventor: Randall S. Beikmann
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Publication number: 20160230642Abstract: A method of operating a cooling circuit of an internal combustion engine is disclosed. The engine is equipped with an engine head, and the cooling circuit includes a pump configured to deliver a variable flow of coolant through the cooling circuit. A coolant flow rate to be delivered by the pump is calculated as a function of an engine load, an engine speed and a desired engine head temperature, and the pump is operated to deliver the calculated coolant flow rate.Type: ApplicationFiled: February 9, 2016Publication date: August 11, 2016Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Michele BILANCIA, Simone BARBERO, Simone BAMBAGIONI, Salvatore MAFRICI
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Publication number: 20160229323Abstract: A removable protective floor liner for a rearward seating area of a passenger compartment of a vehicle includes a first floor mat section including a first flap section that is configured for installation in a first foot well of the passenger compartment and a second floor mat section including a second flap section that is configured for installation in a second foot well of the passenger compartment. The first flap includes an overlapping portion and a plurality of female interlocking fasteners and the second flap includes an underlapping portion and a plurality of male interlocking fasteners, including the underlapping portion extending a predetermined distance beyond the male interlocking fasteners. The first and second flaps cover a tunnel area intervening between the first and second floor mat sections. The male interlocking fasteners are joined with corresponding ones of the female interlocking fasteners when the first and second flaps are aligned.Type: ApplicationFiled: August 21, 2015Publication date: August 11, 2016Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Kevin J. Veik, Wendy E. Zaranek
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Publication number: 20160229450Abstract: A driver assistance system for a vehicle includes a steering assistance system for autonomously generating steering commands, a first actuating drive for adjusting a steering angle on a steerable wheel of the vehicle corresponding to the steering commands and a steering wheel that is rotatable coupled to the steering angle by a second actuating drive. The steering assistance system actuates the second actuating drive in order to favor a low-frequency component of a frequency spectrum of changes of the steering angle in the rotation of the steering wheel than a high-frequency component of the frequency spectrum.Type: ApplicationFiled: February 11, 2016Publication date: August 11, 2016Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Jochen BASTING, Steffen STAUDER
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Publication number: 20160229311Abstract: A motor vehicle includes a body, a drive motor, at least one seat with a retaining structure, a first connecting element, a second connecting element, and at least one fastening device with which the seat is attached to the body. The first connecting element is used to attach the fastening device to the retaining structure in a positive and/or non-positive connecting manner. The second connecting element is used to attach the fastening device to the body in a positive and/or non-positive manner.Type: ApplicationFiled: February 4, 2016Publication date: August 11, 2016Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventor: Andrzej PLESKOT