General Motors Patents

General Motors Company designs, builds and sells cars, trucks and automobile parts worldwide. Its main brands include Buick, Cadillac, Chevrolet and GMC. Outside of North America, it also markets vehicles under the Holden, Open and Vauxhall. In Asia, subsidiaries also design, manufacture, and market vehicles under the Alpheon, Baojun, Jiefan ang Wuling brands. The company provides automotive financing services through GM Financial.

General Motors Patents by Type

  • Publication number: 20170051812
    Abstract: A transmission includes a single planetary gearset, a first torque machine, an output member and a two-speed gearset that is coupled to the drive member. The single planetary gearset includes a sun gear, a carrier gearset and a ring gear, wherein the carrier gearset is rotatably couplable to the input member and rotatably couplable to the output member, the sun gear is rotatably coupled to a rotor of the first torque machine, and the ring gear is rotatably couplable to the input member and rotatably couplable to the output member. The output member is rotatably couplable to the two-speed gearset, which is configured to operate in one of a first gear ratio and a second gear ratio.
    Type: Application
    Filed: August 21, 2015
    Publication date: February 23, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Ravikanth G V, Sandhu Kurian Kurian, Hashim MM, Alan G. Holmes
  • Publication number: 20170052666
    Abstract: A method for providing customized infotainment options to a vehicle user. The method includes receiving, by a system having a processor, using a data mining module of a learning interface, and from a control panel, a first control signal including an information data set. The method also includes storing, by the system, using the mining module, the information data set to a memory, and identifying, by the system, using the mining module, reoccurring data segments of the information data set. The method further includes generating, by the system, using the mining module, a preference data set including the reoccurring data segments, and processing, by the system, using an adaptive module of the interface, the preference data set, yielding option data. And the method includes sending, by the system, using the adaptive module, via a second control signal, the option data to the control panel for presentation to the vehicle user.
    Type: Application
    Filed: March 5, 2014
    Publication date: February 23, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATION LLC
    Inventors: Peggy Wang, Jianfeng Wang, William Otto
  • Publication number: 20170050280
    Abstract: An assembly system and a part holding assembly are configured to locate and secure a part defining a plurality of holes. The assembly includes a frame having a track. The assembly includes a first device and a second device each supported by the frame. One of the devices is movable along the track for positioning the devices relative to each other and relative to the location of the holes of the part. The first device includes a first pin and the second device includes a second pin. Each of the pins is movable between a closed position and an open position. The pins are configured to be disposed through respective holes of the part when in the closed position for locating the part. The pins are configured to expand in the respective holes when in the open position for securing the part to the devices.
    Type: Application
    Filed: August 19, 2015
    Publication date: February 23, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jianying Shi, Scott A. McLeod, Justin Jay Hackett
  • Publication number: 20170051695
    Abstract: A method of controlling torque output of a power-plant during launch of a vehicle having a transmission with a manually-operated clutch is disclosed. The power-plant torque is varied based on clutch pedal and throttle pedal positions using a proportional-integral-derivative (PID) control logic in an electronic fuel control system. The method includes setting power-plant idle speed, detecting clutch engagement without application of the throttle pedal, and raising power-plant torque after clutch engagement is detected. In each PID feedback loop, the method includes detecting actual power-plant speed and a rate of change in actual power-plant speed, and adjusting the raised power-plant torque in response to the determined rate of change in actual power-plant speed.
    Type: Application
    Filed: August 17, 2015
    Publication date: February 23, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Krishnendu Kar, Leon Cribbins, Thomas Weglarz
  • Publication number: 20170050323
    Abstract: An assembly system and a part holding assembly are configured to locate and secure a part defining holes. The part holding assembly further includes a first clamping device movable along a first track for positioning the first clamping device relative to the part. The first clamping device is configured to engage the part to secure the part to the first clamping device. The part holding assembly also includes a first pin device movable along a second track for positioning the first pin device relative to the location of one of the holes of the part. The first pin is configured to be disposed through the one of the holes of the part when in a closed position for locating the part. The first pin is configured to expand in the one of the holes when in an open position for securing the part to the first pin device.
    Type: Application
    Filed: August 19, 2015
    Publication date: February 23, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jianying Shi, Scott A. McLeod, Justin Jay Hackett
  • Publication number: 20170050279
    Abstract: A tooling pivot is configured to pivot and to hold a tool in a plurality of operating positions. The tooling pivot includes a bracket, a tooling plate, a motor, a brake, and a controller. The tooling plate is connected to the bracket, connectable to the tool, and rotatable. The motor is connected to the bracket and to the tooling plate and is configured to rotate the tooling plate to an operating position. The brake is connected to the bracket and is configured to hold the tooling plate in the operating position. The controller is connected to the motor and to the brake and is configured to control the motion and position of the tooling plate and to control the holding of the tooling plate. The brake is configured to release the tooling plate when the motor rotates the tooling plate to the operating position.
    Type: Application
    Filed: August 19, 2015
    Publication date: February 23, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jianying Shi, Scott A. McLeod, Justin Jay Hackett
  • Publication number: 20170050322
    Abstract: A fixture includes a stand having a first and second end; a first arm attached to the stand at the first end and stationary with respect to the second end; and a first effector attached to the first arm. The first effector has a first plurality of pins and a first cap defining a first plurality of channels. Each of the first pins is retractable into and translatable out of a respective one of the first channels. The tool includes a second arm attached to the stand between the first and second ends, wherein the second arm is translatable along the stand; and a second effector attached to the second arm. The second effector has a second plurality of pins and a second cap defining a second plurality of channels. Each of the second pins is retractable into and translatable out of a respective one of the second channels.
    Type: Application
    Filed: August 19, 2015
    Publication date: February 23, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jianying Shi, Scott A. McLeod
  • Publication number: 20170050281
    Abstract: A work support includes a mounting plate and a mechanical lock coupled to the mounting plate. The mechanical lock includes a base coupled to the mounting plate and a support pin. The support pin is movably coupled to the base. As such, the support pin can move relative to the base. The work support further includes a locking collar at least partly disposed inside the base. The locking collar surrounds the support pin and includes a first collar portion disposed around the support pin. The first collar portion has an outer tapered surface facing away from the support pin. The locking collar further includes a second collar portion disposed around the support pin. The second collar portion has an inner tapered surface facing toward the support pin and can move relative to the first collar between an unlocked position and a locked position.
    Type: Application
    Filed: August 17, 2015
    Publication date: February 23, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Matthew D. Kaake, Bryan F. Hacker
  • Publication number: 20170050245
    Abstract: An expanding locating pin assembly configured to locate and hold a part includes a housing, a locating pin, an actuating mechanism, and a controller. The housing is configured with a plurality of radial jaw guides and a part rest face. The locating pin has a plurality of jaws connected to and radially movable in the radial jaw guides and extending past the part rest face. The actuating mechanism synchronously moves the jaws to a radial position and applies a holding force to the part. The controller controls the radial position and the holding force of the jaws. The part rest face of the housing and the jaws of the locating pin are configured to receive the part in a located position. The jaws of the locating pin are configured to hold the part in the located position via the holding force and a friction force resulting from the holding force.
    Type: Application
    Filed: August 19, 2015
    Publication date: February 23, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jianying Shi, Scott A. McLeod, Justin Jay Hackett, John Patrick Spicer
  • Publication number: 20170050246
    Abstract: An expanding locating and clamping pin assembly configured to locate and clamp a part includes a housing, a locating pin, an actuating mechanism, and a controller. The housing is configured with a plurality of radial jaw guides and a part rest face. The locating pin has a plurality of jaws radially movable in the radial jaw guides, extending past the part rest face, and configured with a part clamping feature. The actuating mechanism is connected to the housing and the jaws and is configured to synchronously move the jaws to a radial position and to apply the clamping force. The controller controls the radial position of the jaws and the clamping force. The part rest face and the jaws of the locating pin are configured to receive the part in a located position and to clamp the part in the located position via the clamping force.
    Type: Application
    Filed: August 19, 2015
    Publication date: February 23, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jianying Shi, Scott A. McLeod, Justin Jay Hackett
  • Publication number: 20170050277
    Abstract: A method of assembling a component includes gripping a first subcomponent with a first end-of-arm tool and grasping a second subcomponent with a second end-of-arm tool. The first tool is attached to a first robot arm and the first subcomponent defines a first plurality of locating holes. The second tool is attached to a second robot arm and the second subcomponent defines a second plurality of locating holes. After grasping, the method includes aligning at least one of the first locating holes adjacent to at least one of the second locating holes to set an initial position of the second subcomponent with respect to the first subcomponent without releasing the first and second subcomponents. After aligning, the method includes forming a joint between the first and second subcomponents with a joining tool attached to a joining robot arm to thereby assemble the component. A component assembly system is also disclosed.
    Type: Application
    Filed: August 19, 2015
    Publication date: February 23, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jianying Shi, Scott A. McLeod
  • Patent number: 9573194
    Abstract: Spherical particles of one or more elemental metals and elemental carbon are prepared from a precursor in the form of a metal oleate. The metal oleate precursor is dispersed in a liquid vehicle and aerosol droplets of the dispersed precursor are formed in a stream of an inert gas. The aerosol droplets are heated in the stream to decompose the oleate ligand portion of the precursor and form spherical particles that have a mesoporous nanocrystalline structure. The open mesopores of the spherical particles provide a high surface area for contact with fluids in many applications. For example, the mesopores can be infiltrated with a hydrogen absorbing material, such as magnesium hydride, in order to increase the hydrogen storage capacity of the particles.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: February 21, 2017
    Assignees: GM Global Technology Operations LLC, The Regents of the University of California
    Inventors: Qiangfeng Xiao, Mei Cai, Hiesang Sohn, Yunfeng Lu
  • Patent number: 9573515
    Abstract: A method for automatic activation of a vehicle turn indicator is disclosed. The method may include determining whether a lane change maneuver is impending in a specified direction. The method may also include determining whether the vehicle turn indicator has been activated through a driver interface. The vehicle turn indicator may be engaged when not activated through the driver interface.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Chad T. Zagorski, Nikolai K. Moshchuk
  • Patent number: 9573613
    Abstract: A motor vehicle is provided with a steering wheel, in the spoke of which an operating device, in particular a modular multi-function operation device, for arrangement in a spoke of a motor vehicle steering wheel, that includes, but is not limited to an operating element that is rotatable about an axis of rotation, in particular a turn-push operating element for operation with turning and/or pushing, which is coupled to at least one sensor for generating a control signal. The axis of rotation is obliquely mounted with an angular contact bearing, so that the operating device is oriented projecting in radial direction and in axial direction and the axis of rotation is variable with respect to the inclined mounting with the angular contact bearing, so that a rocking function is realized. In addition, a method is provided for operating instruments of a motor vehicle.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: February 21, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Marten Wittorf, Peter Kahler
  • Patent number: 9573571
    Abstract: A vehicle is disclosed. The vehicle includes a body. The body includes a forward end and a rearward end spaced from each other along a longitudinal axis. The forward end of the body defines an opening for allowing airflow into the body. The vehicle also includes a venturi brake duct assembly positioned relative to the opening to receive the airflow from the opening and to guide the airflow to a brake device for cooling the brake device.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Steven J. Weber, Heewook Lee
  • Patent number: 9574483
    Abstract: An engine control system includes an injection determination module, a correction factor determination module, and a regeneration control module. The injection determination module determines a desired amount of hydrocarbons (HC) to inject into exhaust gas produced by an engine based a flow rate of the exhaust gas. The correction factor determination module determines a correction factor for the desired amount of HC based on engine speed and engine load. The regeneration control module controls injection of an adjusted amount of HC into the exhaust gas during regeneration of a particulate matter filter, wherein the adjusted amount of HC is based on the desired amount of HC and the correction factor.
    Type: Grant
    Filed: January 14, 2010
    Date of Patent: February 21, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Sarah Funk, Thomas Larose, Jr., Patrick Barasa, Michael V. Taylor
  • Patent number: 9573623
    Abstract: A method of providing automatic collision avoidance in a vehicle with a front wheel electric power steering (EPS) system and rear wheel active rear steering (ARS) system and an automatic collision avoidance system are described. The method includes generating a vehicle math model including the control variables, designing a steering control goal as a criterion to determine the control variables, and implementing a model predictive control to solve the steering control goal and determine the control variables. The method also includes providing the control variables to the EPS system and the ARS system to respectively control a front actuator associated with front wheels and a rear actuator associated with rear wheels.
    Type: Grant
    Filed: January 8, 2015
    Date of Patent: February 21, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Nikolai K. Moshchuk, Shih-Ken Chen, Chad T. Zagorski
  • Patent number: 9573628
    Abstract: The present disclosure relates to a front structure of a vehicle body having a wheel installation strut and a side member which flanks an interior defined by the front car. The side member has a convex surface, by means of which it is fastened to an end of the wheel installation strut in multiple points. At least one point is offset relative to the other points towards the interior. As a result, a front structure with good stiffness for improved occupant protection can be provided, which can also be assembled in a simple manner.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: February 21, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Udo Mildner, Lothar Teske
  • Patent number: 9573566
    Abstract: A system and method of selectively carrying out a vehicle passive door lock function. The method carried out by the system includes: (a) detecting a vehicle operator's exit from a vehicle having at least one lockable door for passenger entry and exit, wherein the vehicle is configured to automatically carry out a passive operator departure process following the operator's exit, (b) determining whether the vehicle is at a lock function exempt location; (c) automatically carrying out the passive operator departure process in a first mode when it is determined that the vehicle is not at the exempt location; and (d) automatically carrying out the passive operator departure process in a second mode when it is determined that the vehicle is at the exempt location, wherein the second mode comprises at least one less door lock function than is carried out in the first mode.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventor: Christopher L. Oesterling
  • Patent number: 9574484
    Abstract: A method is disclosed for controlling a diesel engine equipped with a diesel particulate filter (DPF). The method includes detecting steady state operation of the engine generating a first flow rate of particulate matter (PM) directed into the DPF. The method also includes, during the steady state operation, triggering exhaust gas recirculation to the engine and thereby directing a second PM flow rate that is greater than the first flow rate into the DPF. The method additionally includes detecting a PM flow rate exiting the DPF in response to the second PM flow rate directed into the DPF. The method also includes comparing the detected PM flow rate exiting the DPF with a PM flow rate threshold. Furthermore, the method includes regulating injection of fuel to regenerate the DPF, if the detected PM flow rate exiting the DPF is greater than the PM flow rate threshold.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Vincent J. Tylutki, Igor Anilovich, Christopher Whitt, Cristian Taibi
  • Patent number: 9573454
    Abstract: A powertrain for a vehicle includes an engine and a method of assembling the powertrain includes providing the engine. A starter mechanism is selectively operable to start the engine. A motor-generator includes an adapter to dispose the motor-generator and the starter mechanism in alternative assembly configurations being a first assembly configuration and a second assembly configuration. The first assembly configuration is when the starter mechanism is coupleable to the adapter to selectively transfer torque from the motor-generator through the adapter and the starter mechanism to start the engine. The second assembly configuration is when the starter mechanism is spaced from the adapter to operate independently of the motor-generator such that the starter mechanism selectively transfers torque to start the engine.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan G. Holmes, Alexandru Rajala, Chandra S. Namuduri, Venkata Prasad Atluri
  • Patent number: 9573468
    Abstract: The disclosure is related to an audio/video processing apparatus for a car such as a car audio system, which allows various applications installed at a mobile communication device of a user (for example, a smart phone, a tablet PC or the like) to be implemented using car equipment, by executing or implementing various applications installed at a mobile communication device through a car audio/video control module or an application for a car (App-C) installed at the car.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Jin Chul Park, Jong Uk Park, Sang Hoon Park
  • Patent number: 9573476
    Abstract: A method and system for waking up a primary microcontroller of a controller in response to a change in a control pilot signal generated by an external device coupled to the controller includes coupling the external device to an input port electrically connected to the controller. A control pilot signal generated by the external device is received by the input port and outputted to a monitoring device of the controller in low power mode. The monitoring device in low power mode polls the control pilot signal and upon detecting a valid change transitions to normal power mode to output a wakeup pulse to the primary microcontroller, which in a sleep state receives the wakeup pulse and wakes up to execute instructions stored on the primary microcontroller. In an example, the system controls recharging of a battery by a charging station which outputs a pulse width modulated control pilot signal.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Thomas John Timpf, Jr., Cody D. Berman, Vivekananda Shripathy
  • Patent number: 9573484
    Abstract: Systems and methods for monitoring a state of a battery system based on information related to a measured pressure within the battery system are presented. In certain embodiments, the disclosed systems and methods may utilize a pressure-sensitive smart foam material in connection with measuring a pressure within the battery system. Based on the measured pressure information, a variety of information relating to the battery system may be determined. For example, information relating to a state of a battery system, certain events occurring within the battery system, and/or battery lifecycle information may be determined based on the measured pressure information.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: February 21, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Herman K. Phlegm, Andrew J. Namou, Edgar P. Calderon, Lisa J. Gross
  • Patent number: 9573320
    Abstract: A method, for repairing a discrepant weld in a workpiece arrangement including at least two workpieces, comprising positioning a mechanical intermediary adjacent the discrepant weld and inserting the intermediary through the discrepant weld and into at least a distal workpiece of the two workpieces, wherein upon insertion, a proximate surface of the intermediary is exposed at a proximate side of the workpiece arrangement. The method further includes delivering weld energy to the intermediary. The intermediary is configured, and the weld energy provided, so that energy passes through the intermediary in a pre-determined manner. Energy passing through the intermediary in the pre-determined manner generates heat in material of the workpieces causing the material to melt at an arrangement interface. The method further comprises allowing or causing the material melted to cool, wherein the melted material, when cooled, forms and/or strengthens a robust joint connecting the workpieces.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventor: Pei-Chung Wang
  • Patent number: 9573221
    Abstract: A welding assembly includes a sonotrode, cleaning station, and controller. The controller periodically commands clamping of the sonotrode onto the cleaning block, and a transmission of ultrasonic energy into the cleaning block for a calibrated duration sufficient for removing residual amounts of metal from welding pads of the sonotrode. The cleaning block may include an aluminum bar coated with a polymeric material, e.g., porous polyethylene silica or alumina composite. A thin sacrificial layer of an anti-adhesion material, e.g., colloidal silica, may be periodically applied to the welding pads, particularly after a transition from welding a first metal to welding a second metal. The sacrificial layer may be applied via a sponge, a saturated surface, or spraying.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Michael P. Balogh, Wayne W. Cai, Teresa J. Rinker, Thomas J. Chapaton, Peng Lu, Eric G. Hartnagle
  • Patent number: 9574491
    Abstract: A single-shaft dual expansion internal combustion engine includes first and second power cylinders and an expander cylinder. The cylinder head fluidly couples the first and second power cylinders and the expander cylinder. First and second power pistons reciprocate in the first and second power cylinders and connect to a first crankpin of the crankshaft. A multi-link connecting rod assembly includes a rigid main arm supporting a first pivot pin, a second pivot pin and a third pivot pin. The first pivot pin connects to an expander piston reciprocating in the third cylinder. The third pivot pin couples to a first end of a swing arm, and a second end of the swing arm rotatably couples to a fourth pivot pin that couples to a distal end of a rotating arm that attaches to a rotating shaft coupled to rotation of the crankshaft.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Russell P. Durrett, Paul M. Najt, Peter Andruskiewicz, Steve Miller, Ian Whiteside, Steve Anstey
  • Patent number: 9574619
    Abstract: A pawl grounding clutch with synchronizer assembly attached to a planetary gear set of a drive unit. A cylindrical hub is engaged to the ring gear and the hub co-rotates with the ring gear. A gear is fixed to the hub. A pawl having a pawl tooth rotates between a first position with the pawl tooth spaced away from the gear and a second position having the pawl tooth engaged between successive gear teeth. A synchronizer rotates during pawl rotation and includes a friction surface directly contacting the hub before the pawl tooth engages the gear. A shift member displaces the pawl between the first and second positions. The pawl in the second position engages the ring gear with a case defining a clutch closed position. The pawl in the first position disengages ring gear from the case, defining a clutch open position.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations, LLC
    Inventor: Joseph Ralph Littlefield
  • Patent number: 9574522
    Abstract: An assembly includes a cylinder head with an integrated exhaust manifold that has four exhaust flow passages directing cylinder exhaust from inlets arranged to correspond with exhaust from the four cylinders, respectively, and has only three outlets. The assembly includes a twin scroll turbocharger having a housing with a first scroll passage, a second scroll passage, and only three inlets. Two of the exhaust flow passages join in the cylinder head to direct exhaust flow into only one of the inlets of the housing and through the first scroll passage. Exhaust flow through the other two of the exhaust flow passages flows separately into the other two inlets in the housing and joins in the housing to flow through the second scroll passage.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Robert J. Moran, Kevin M. Luchansky, Eric C. Douse
  • Patent number: 9575128
    Abstract: Adaptive estimation techniques to create a battery state estimator to estimate power capabilities of the battery pack in a vehicle. The estimator adaptively updates circuit model parameters used to calculate the voltage states of the ECM of a battery pack. The adaptive estimation techniques may also be used to calculate a solid-state diffusion voltage effects within the battery pack. The adaptive estimator is used to increase robustness of the calculation to sensor noise, modeling error, and battery pack degradation.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Patrick Frost, Brian J. Koch, Damon R. Frisch, Brett B. Stawinski, Patricia M. Laskowsky, Kurt M. Johnson, Robert C. Baraszu
  • Patent number: 9574622
    Abstract: A system is provided for latching and draining a torque transmitting device. The system may include a clutch feed channel having an inlet portion and a clutch portion. The inlet portion is configured to provide hydraulic fluid from a pressurized source to the clutch portion. The clutch portion is configured to provide hydraulic fluid to a torque transmitting device. An inlet valve connects the inlet portion of the clutch feed channel to the clutch portion of the clutch feed channel. The inlet valve is configured to open to allow the hydraulic fluid to flow from the inlet portion to the clutch portion when the torque transmitting device is engaged. The inlet valve is configured to close and to trap hydraulic fluid within the torque transmitting device when the torque transmitting device is not actively pressurized. A multispeed transmission is also provided.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations, LLC
    Inventors: Craig S. Ross, Paul G. Otanez
  • Patent number: 9574654
    Abstract: A hydraulic control system for a CVT includes a pressure regulator subsystem, a ratio control subsystem, a torque converter control (TCC) subsystem, a clutch control subsystem, an electronic transmission range selection subsystem, and is enabled for automatic engine start/stop (ESS) functionality.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations, LLC
    Inventor: Philip C. Lundberg
  • Patent number: 9574657
    Abstract: A vehicle includes an engine, a transmission, and a controller. The transmission includes a pressure control solenoid (PCS) valve device having a PCS and a regulating valve, a friction clutch, and a clutch piston in fluid communication with the regulating valve. The piston is operable to apply a clutch pressure to the friction clutch during a shift of the transmission. The controller is programmed to receive an acceleration value describing a lateral and/or longitudinal acceleration force of the vehicle, calculate the clutch pressure using the received acceleration value, and control an operation of the regulating valve via the PCS using the calculated clutch pressure. The acceleration value may be determined via one or more accelerometers or calculated. A method is also disclosed for compensating for acceleration in control of the regulating valve in a vehicle having a transmission that includes a friction clutch, PCS, and regulating valve.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Shawn M. Harris, Timothy R. Stockdale, Joel H. Gunderson
  • Patent number: 9574252
    Abstract: A method of reducing entrained aluminum oxides in aluminum castings. The method comprises preheating a furnace charge to remove moisture and contaminants. The furnace charge is then coated on all free surfaces with a layer of flux. Subsequently the furnace charge is melted in a furnace to form a melt bath of liquid aluminum suitable for casting. The flux layer removes the naturally occurring oxide film from the furnace charge surface as well as provides a cover flux to protect the melt bath from oxidation.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations, LLC
    Inventors: Qigui Wang, Dale A. Gerard
  • Patent number: 9574537
    Abstract: A first fuel rail of an engine connects to first fuel injectors and a second fuel rail connects to second fuel injectors. The first fuel injectors each includes a tip portion projecting through an opening in the cylinder head into the combustion chamber. The second fuel injectors each includes a tip portion projecting through an opening in a bottom portion of an intake port. The first fuel rail includes first mounting brackets each including an aperture, and outwardly projecting mounting bosses, and fixedly attaches to the cylinder head via fasteners that pass through the apertures of the first mounting brackets and attach to the mounting bosses of the cylinder head. The second fuel rail includes second mounting brackets each including an aperture. The second fuel rail fixedly attaches to the first fuel rail via fasteners that attach to the mounting bosses of the first fuel rail.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan W. Hayman, Eric C. Douse
  • Patent number: 9574971
    Abstract: A method for assessing a cold start emission reduction (CSER) strategy applied to an engine system is provided. The method determines a first accumulation value based on an estimated output signal that would result from applying a first control command to the engine system. The method determines a second accumulation value based on a measured output signal resulting from applying a second control command that implements the CSER strategy to the engine system. The method compares the first accumulation value and the second accumulation value. The method determines whether the applying the second command to the engine system achieved a performance threshold of the CSER strategy based on the comparing.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: February 21, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Kevin J. McKay, Steve L. Melby, Chad E. Marlett
  • Patent number: 9576352
    Abstract: A quantitative metallographic method to measure skin layer thickness in high pressure die cast aluminum components. Because the faster-cooling skin layer region exhibits a higher volume fraction of eutectic phases than that of a slower-cooling inner region, measurements showing such higher eutectic phases can be used to quantify such layer thickness. An image at various thicknesses of a location of interest in a cast component sample is first obtained using an image analyzer, from which eutectic volume fractions within each of the received images may be determined. Comparisons of the determined volume fractions can be made against a known or predicted quantity for a particular alloy composition, and then correlated to the skin layer thickness via differences between the received or measured quantities and those of the known standard.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations, LLC
    Inventors: Qigui Wang, Wenying Yang, James W. Knight
  • Patent number: 9578580
    Abstract: A system and method of controlling a wireless device communicating with a cellular communications system includes: establishing a cellular connection between the wireless device and a first cell tower; detecting, at the wireless device, a reference signal received power (RSRP) measurement of a signal broadcast by the first cell tower; increasing an RSRP threshold used by the wireless device by adding an offset value to the RSRP threshold; determining whether the detected RSRP measurement of the signal broadcast by the first cell tower falls below the increased RSRP threshold; and initiating a cellular connection with a second cell tower.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: February 21, 2017
    Assignee: General Motors LLC
    Inventors: Mohammad Ishfaq, Monil H. Joshi, Waqas Haleem, David George
  • Patent number: 9576078
    Abstract: The present disclosure provides methods of generating an interior surface of a vehicle compartment. A selection from the user is received for one of a plurality of identifiers of the general template and a selection from the user is received for a desired location of an exterior surface of a specific vehicle to associate general criteria for the selected one of the identifiers with exterior surface data of the selected desired location. Interior surface data of the selected desired location is determined as a function of the general criteria of the selected one of the identifiers and the exterior surface data of the selected desired location. The interior surface representing the interior surface data of the configuration of the specific vehicle corresponding to the general criteria of the selected one of the identifiers and the exterior surface data of the selected desired location is displayed on the display device.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventor: Tasie N. Backos
  • Patent number: 9574972
    Abstract: Methods and systems are provided for evaluating a steering system of a vehicle, in which the steering system includes a steering column, steering rack, and pinion. The rack is manipulated as the steering system is mounted to a testing system. The steering column is also manipulated as the steering system is mounted to the testing system. Data is collected from the manipulating of the rack and the dithering of the steering column for use in evaluating the steering system.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: February 21, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Kenneth L. Oblizajek, John D. Sopoci, William Keith Adams
  • Patent number: 9578047
    Abstract: Systems and methods are provided for monitoring and detecting intrusions and authenticating messages on a communication network of a vehicle. A plurality of signals transmitted over communications network between an electronic control module and a remote electronic module are monitored. Reflectometry feature sets are extracted from the plurality of signals and compared to a repository of predetermined communication network feature sets to generate a mismatch value. The mismatch value is compared to a predetermined threshold range and an authenticated event occurs when the mismatch value is within the predetermined threshold range. When the mismatch value is outside the predetermined threshold range, a flagged event occurs and is recorded.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: February 21, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Moshe Laifenfeld, Yuval Polevoy, Timothy D. Julson, Kevin M. Baltes, Omer Cohen
  • Patent number: 9576474
    Abstract: A method and a system for providing vehicle services to at least one communication device located at a vehicle via a vehicle telematics unit. The method carried out by the system includes the steps of: receiving a request at the vehicle telematics unit for first vehicle services from a first communication device located at a vehicle; associating a first identifier with the first communication device; and providing the first vehicle services to the first communication device, wherein the vehicle services are provided according to at least one services parameter associated with the first identifier.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: February 21, 2017
    Assignee: General Motors LLC
    Inventors: Andrew J Macdonald, Jonathan L Gerlach, Dipankar Pal, David George
  • Patent number: 9576791
    Abstract: Semiconductor devices and methods for fabricating semiconductor devices are provided. In one example, a semiconductor device includes a semiconductor structure. An electrically semi-insulating passivation layer overlies the semiconductor structure. An electrically substantially fully insulating passivation layer overlies the electrically semi-insulating passivation layer.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: February 21, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Craig J. Atkinson, Alireza Amirrezvani, Nicole C. Skaggs
  • Patent number: 9576490
    Abstract: A navigation system for a transportation device, such as a vehicle, includes a controller and is at least partially operated by a driver. An off-board control module is operatively connected to a remote server and configured to communicate with the controller. The off-board control module is not physically connected to the controller. The controller has a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of determining a personalized route for travelling from a start location to an end location. The controller is programmed to divide each of the plurality of routes into a respective plurality of nodes, such that adjacent ones of the plurality of nodes define a respective path (i). The personalized route is selected based at least partially on a weighted consumption score reflecting various preferences of the driver, such as fuel consumption, speed, distance travelled and other preferences.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Peggy Wang, Eric Chen, Wenjing Yang, Ron M. Hecht
  • Patent number: 9577251
    Abstract: In an example of a method for making a silicon-based active electrode material, a silicon active material precursor is introduced into a carrier gas. Another active material precursor is introduced into the carrier gas prior to, simultaneously with or subsequent to the silicon active material precursor. The other active material precursor is selected from a tin active material precursor, an aluminum active material precursor, a graphene active material precursor, and combinations thereof. The carrier gas containing the precursors is exposed to plasma vaporization, and a material is formed. The material includes i) an alloy of phase separated silicon and tin and/or aluminum, or ii) a graphene layer having silicon nanoparticles and tin nanoparticles, aluminum nanoparticles, or combinations of tin and aluminum nanoparticles deposited on a surface thereof, or iii) a graphene layer having an alloy of phase separated silicon and tin, aluminum, or tin and aluminum deposited on a surface thereof.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Xingcheng Xiao, Mei Cai
  • Patent number: 9577284
    Abstract: A fuel cell device including a fuel cell stack with a flexible enclosure.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Benno Andreas-Schott, Thomas P. Migliore
  • Publication number: 20170044961
    Abstract: A method of controlling a particulate filter of an internal combustion engine is disclosed. A regeneration cycle of the particulate filter is initiated. During the regeneration, a value of an exhaust gas temperature at an outlet of the particulate filter is determined and a value of a residual soot quantity stored into the particulate filter is estimated on the basis of the measured value of the exhaust gas temperature at the outlet of the particulate filter. The regeneration cycle may be started and stopped based on the estimated residual soot quantity.
    Type: Application
    Filed: August 12, 2016
    Publication date: February 16, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Giuseppe MAZZARA BOLOGNA, Isadora RICCI, Stefano PELLEGRINO
  • Publication number: 20170046810
    Abstract: A method and system for processing vehicle data to respond to a vehicle crash is provided, vehicle data obtained from at least one vehicle is received. An entrapment-risk parameter indicative of an entrapment risk is estimated based on the vehicle data. Information related to an entrapment risk based on the entrapment-risk parameter is communicated to an emergency response point.
    Type: Application
    Filed: August 15, 2016
    Publication date: February 16, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventor: Stephane VITET
  • Publication number: 20170044951
    Abstract: A computer program, system and method are provided for thermally regulating an injector injecting a reducing agent into an exhaust pipe of an internal combustion engine. A pump is activated to deliver a coolant in a coolant circuit having a portion in heat exchange relation with the injector. A value is determined for a mass flow rate of the coolant delivered by the pump. A value is calculated for a temperature of the injector as a function of the determined value of the mass flow rate. A difference is calculated between the calculated value of the injector temperature and a predetermined set-point value thereof, and the mass flow rate of the coolant delivered by the pump is adjusted on the basis of the calculated difference.
    Type: Application
    Filed: August 15, 2016
    Publication date: February 16, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Michele BILANCIA, Giorgio STICCHI, Luis Daniel GUERRERO CRUZ, Stefano CASSANI
  • Publication number: 20170044946
    Abstract: A method is disclosed for operating an automotive system having an internal combustion engine equipped with an exhaust gas aftertreatment system including a Lean NOx Trap (LNT) upstream of a Selective Catalytic Reduction washcoated particulate filter (SCRF). A LNT inlet temperature is monitored. A parameter representative of a quantity of NOx stored in the LNT is also monitored. A map correlating the LNT inlet temperature and the quantity of NOx stored in the LNT is used to estimate an ammonia quantity produced during a LNT regeneration. A LNT regeneration is performed, if the estimated ammonia quantity is greater than a threshold value thereof.
    Type: Application
    Filed: August 12, 2016
    Publication date: February 16, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Gennaro MERLINO, Jaime Andres CESPEDES GARCIA