Patents Assigned to GLOBAL TECHNOLOGY OPERATIONS LLC
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Publication number: 20130080026Abstract: An internal combustion engine operates in a homogeneous-charge compression-ignition combustion mode. A method for controlling the internal combustion engine in response to a fast transient event from a low-load state to a high-load state includes operating the engine with a negative valve overlap between an intake valve and an exhaust valve, and determining a preferred combustion phasing responsive to the high-load state. A preferred EGR mass and a preferred intake valve timing corresponding to the preferred combustion phasing are determined A first intake valve timing is determined in response to a difference between the preferred EGR mass and an actual EGR mass. The intake valve timing is controlled in response to a difference between the preferred intake valve timing and the first intake valve timing.Type: ApplicationFiled: September 27, 2011Publication date: March 28, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Jun-Mo Kang, Chen-Fang Chang, Hanho Yun
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Publication number: 20130076086Abstract: A head restraint for a seat includes a core support structure supporting a dual rate cushioning foam. The dual rate cushioning foam includes a dilatant material that changes from a first compression rate providing a first stiffness to a second compression rate providing a second stiffness in response to a strain rate in the dilatant material rising above a pre-defined limit. The first compression rate at the first stiffness provides a softer feel to the occupant for normal operation of the vehicle. The second compression rate at the second stiffness provides a stiffer resistance to resist the sudden rearward movement of the occupant's head in the event of a sudden rear impact.Type: ApplicationFiled: September 28, 2011Publication date: March 28, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Douglas M. Pickett, Carol C. Hathaway
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Publication number: 20130074789Abstract: A wax-type thermostat for the cooling system of an internal combustion engine (ICE) provided with a radiator and a coolant loop circuit linking the radiator to the ICE, and a by-pass conduit. The thermostat comprises a thermostat body with one inlet from the radiator, one inlet from the ICE, and one outlet to the ICE. The thermostat further comprises a closure element integral to a first piston that closes or opens a thermostat internal pathway running from the inlet from the radiator to the outlet to the ICE, a main wax chamber thermally connected to the coolant within the thermostat body, and a spring to return the closure element towards its closing position. Also provided is a first means for moving the first piston when a volume variation in the wax occurs.Type: ApplicationFiled: September 25, 2012Publication date: March 28, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventor: GM GLOBAL TECHNOLOGY OPERATIONS LLC
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Publication number: 20130079998Abstract: A method of controlling a vehicle is provided. The method includes determining a current car wash mode from a plurality of car wash modes; and controlling at least one vehicle component based on the car wash mode.Type: ApplicationFiled: September 27, 2011Publication date: March 28, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Mary Beth Furness, Kenneth J. Buslepp
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Publication number: 20130080028Abstract: An exemplary embodiment of the present disclosure provides a method for operating an internal combustion engine comprising: monitoring a value of a temperature parameter of a diesel particulate filter of the internal combustion engine; monitoring a value of an operating parameter of the internal combustion engine indicative of an engine load; using the monitored value of the engine load parameter to determine a threshold value of the diesel particulate filter temperature parameter; testing whether the monitored value of the diesel particulate filter temperature parameter exceeds the determined threshold value thereof; and diagnosing that the diesel particulate filter is overheated if the test returns positive.Type: ApplicationFiled: September 21, 2012Publication date: March 28, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventor: GM GLOBAL TECHNOLOGY OPERATIONS LLC
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Publication number: 20130076902Abstract: A robotic charging station for charging a battery of an electric vehicle includes a base plate, a riser coupled with the base plate and extending substantially transverse to the base plate, and a robotic arm. The robotic arm extends from the riser and supports an end effector. The end effector includes a plurality of electrical contacts configured to couple with a receptacle disposed on the electric vehicle. The robotic arm is configured to move the end effector in three degrees of motion.Type: ApplicationFiled: May 31, 2012Publication date: March 28, 2013Applicants: Universite Laval, GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Dalong Gao, Neil David Mc Kay, Matthew J. Reiland, Simon Foucault, Marc-Antoine Lacasse, Thierry Laliberte, Boris Mayer-St-Onge, Alexandre Lecours, Clement Gosselin, David E. Milburn, Linda Y. Harkenrider
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Publication number: 20130073338Abstract: A method of submitting customer-identified insights for improving a fleet of vehicles. A capturing application is distributed that allows a customer to record a customer identified insight. The capturing application is configured to transmit a recorded customer-identified insight to a receiving unit. Customer-identified insights are received at the receiving unit via a communication system. The customer-identified insights are aggregated in a storage database. The customer-identified insights in the storage database are analyzed to identify potential vehicle improvements.Type: ApplicationFiled: September 15, 2011Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Kevin G. Kolpasky, Jim K. Rainbolt, Thomas Edward Howe, Jan H. Aase
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Publication number: 20130074040Abstract: A method allows for testing software under test (SUT) with respect to a partial design model (PDM) having a boundary which differs from a boundary of the SUT. The method includes recording input information including the SUT, the PDM, and coverage criteria defining a required number of the test cases. Variables in the SUT are identified that correspond to boundary signals for the PDM. Test cases are extracted meeting the coverage criteria. The method may include generating additional test cases at the PDM level and mapping the additional cases with corresponding constraint functions to the boundary of the SUT using a forward/backward propagation and/or heuristics guided technique. A system for testing the SUT includes a host machine and memory. The host machine executes process instructions from memory to identify variables in the SUT that correspond to boundary signals for the PDM, and extracts test cases meeting the coverage criteria.Type: ApplicationFiled: September 21, 2011Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Prakash Mohan Peranandam, Ambar A. Gadkari, Ramesh Sethu
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Publication number: 20130071203Abstract: An apparatus includes structure having a first surface and a second surface, and defining a hole having a first opening at the first surface and a second opening at the second surface. A first member extends into the hole through the first opening and defines a first aperture. A second member extends into the hole through the second opening and defines a second aperture. A threaded fastener is at least partially disposed within the first and second apertures, and is selectively rotatable about an axis. A retainer member is disposed within the first and second apertures and resists axial movement of the first and second members and the threaded fastener.Type: ApplicationFiled: September 21, 2011Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventor: James D. Hay
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Publication number: 20130073864Abstract: A system and method of authenticating data files is provided. The method includes providing a plurality of software part files and a manifest file associated with the software part files. The manifest file identifies each of the plurality of software part files. The method includes associating the manifest file with a manifest detached digital signature. The method also includes digitally signing the manifest file with the manifest detached digital signature. The manifest detached digital signature authenticates the manifest file. The method includes associating each of the plurality of software part files with one a plurality of unique detached digital signatures. The method includes digitally signing each of the plurality of software part files with one of the plurality of unique detached digital signatures. Each of the plurality of unique detached digital signatures authenticates one of the software part files.Type: ApplicationFiled: September 19, 2011Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Susanta P. Sarkar, Ansaf I. Alrabady, Thomas M. P. Catsburg
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Publication number: 20130073148Abstract: A method is presented of optimizing an airbag suppression threshold for an airbag suppression system in a vehicle. The method includes defining a first value as the airbag suppression threshold such that deployment of an airbag is suppressed above the first value. Next, one or more factors indicative of a presence of a child restraint seat in the vehicle seat are determined. The airbag suppression threshold is set to a predefined second value when each of the factors are met. The factors include determining whether a locking feature in a set belt webbing retractor is in a first state configured to prevent withdrawal of the seat belt webbing. Other factors may include determining whether a speed of the vehicle is within a predetermined speed range and whether a load applied to the vehicle seat is within a predetermined seatload range.Type: ApplicationFiled: September 21, 2011Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: John R. Dolan, Joseph P. Gleason, Steven G. Corrion
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Publication number: 20130069347Abstract: An airbag device for a vehicle, a method for transferring an airbag of the airbag device into a compact state, and a vehicle with the airbag device are provided. The airbag device includes an airbag that, on an activation of the airbag device, is configured from a compact state into an expanded state. The airbag has a head region, a thorax region, and a pelvis region. In the expanded state of the airbag, the head region is configured for protection of a head of an occupant situated on a vehicle seat, the thorax region is configured for protection of an upper body of the occupant, and the pelvis region is configured for protection of a pelvis of the occupant. The airbag is configured as a single-chamber side airbag. The airbag device further comprises a gas generator for generation of gas.Type: ApplicationFiled: September 14, 2012Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Thomas JENNY, Ulrich RICK
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Publication number: 20130071736Abstract: A composite of silicon and tin is prepared as a negative electrode composition with increased lithium insertion capacity and durability for use with a metal current collector in cells of a lithium-ion battery. This electrode material is formed such that the silicon is present as a distinct amorphous phase in a matrix phase of crystalline tin. While the tin phase provides electron conductivity, both phases accommodate the insertion and extraction of lithium in the operation of the cell and both phases interact in minimizing mechanical damage to the material as the cell experiences repeated charge and discharge cycles. In general, roughly equal atomic proportions of the tin and silicon are used in forming the phase separated composite electrode material.Type: ApplicationFiled: September 16, 2011Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Xingcheng Xiao, Anil K. Sachdev, Mark W. Verbrugge, Ping Liu, John S. Wang
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Publication number: 20130071681Abstract: One embodiment of the invention may include a method of producing a composite article comprising a container, filling the container with a powdered metal, and compacting the powdered metal in the container such that an interfacial bond is created between the compacted powdered metal and the container.Type: ApplicationFiled: September 20, 2011Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Chongmin Kim, Anil K. Sachdev
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Publication number: 20130068187Abstract: A shaft assembly includes a shaft, a spacer and a cover. The body of the shaft includes a sealing portion, a balancing portion and a hollow portion which may collectively define a generally cylindrical space. The spacer substantially encloses the hollow portion of the body. The cover encapsulates the shaft body and the spacer to provide a substantially continuous cylindrical surface in sealing engagement with the sealing portion. The shaft assembly may be rotatably installed in an engine such that the balancing portion may be partially submerged in an oil bath in the engine and such that the substantially continuous cylindrical surface of the cover minimizes turbulence and aeration of the oil bath when the shaft assembly is rotated. The shaft may be configured for rotation in synchrony with a crankshaft. A method for encapsulating the shaft includes forming a continuous cylindrical surface in sealing engagement with the shaft body.Type: ApplicationFiled: September 15, 2011Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Glenn E. Clever, Charles K. Buehler
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Publication number: 20130073958Abstract: A method and system modifies a user interface (UI) of a portable device in communication with an interface device, where the UI is projected by a human-machine interface of the interface device to a user. The UI is modified by the portable device prior to being output to the interface device based on customized style information provided by the interface device. The interface device may be a vehicle interface device such as a head unit or infotainment system, and the portable device may be a smart phone, media player, or other computing device capable of displaying graphical information.Type: ApplicationFiled: September 19, 2011Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventor: Alfred C. Tom
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Publication number: 20130069332Abstract: A wheel bearing assembly includes a wheel hub, a knuckle member defining a bore, and a bearing arranged in the bore and configured to rotatably support the wheel hub. The bearing includes a seal member configured to cover internal workings of the bearing. The wheel bearing assembly also includes an annular slinger arranged on the wheel hub and configured to at least partially screen the seal member to minimize ingestion of contaminants by the bearing from the ambient. The wheel bearing assembly additionally includes an annular shield configured to at least partially shield the slinger from the contaminants and generate a labyrinth path from the ambient to the seal member for any of the contaminants. A vehicle employing the above described wheel bearing assembly is also disclosed.Type: ApplicationFiled: September 21, 2011Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Wenshui Wang, Robert G. Sutherlin
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Publication number: 20130073128Abstract: An electric vehicle includes a transmission, motor, rechargeable energy storage system (RESS), auxiliary power unit (APU), and a controller. The APU has a pair of rings, at least one of which rotates with respect to the other. One ring is coaxial with and radially within the other. Ring rotation generates current in windings. A gear element is in driving connection with the rotatable ring. The APU includes an engine disposed radially within the inner ring, and a power takeoff mechanism coupled to the gear element. The controller energizes the APU to rotate a ring. A method includes positioning the APU in a vehicle body compartment, affixing an outer ring of windings to a compartment wall, and positioning a rotatable inner ring having permanent magnets radially within and coaxial with the outer ring. The engine is positioned radially within the inner ring. A power takeoff mechanism connects to the inner ring.Type: ApplicationFiled: September 21, 2011Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Adam T. Timmons, Kerem Koprubasi
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Publication number: 20130073222Abstract: A method includes recording a current performance signature for first and second components in a system, recording a calibrated baseline performance signature for the components, and processing the performance signatures through an aging model to determine a future performance signature for each component. The future performance signatures are processed through a system function model to determine the state of function of the system for each possible repair case. A cost-optimal repair case is then determined from among the possible repair cases, and recorded in memory. An apparatus includes first and second components of a system, and a host machine configured for processing the current and baseline performance signatures through the aging and system function models as noted above. The cost-optimal repair case is determined from among all possible repair cases, and then recorded in memory. An example system may be a cranking system with a starter motor and battery.Type: ApplicationFiled: September 21, 2011Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Kwang-Keun Shin, Mutasim A. Salman
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Publication number: 20130068778Abstract: A drainable container system for a vehicle includes a container having an exterior surface and defining an interior cavity configured for storing a fluid, and a drain hole configured for draining the fluid from the cavity. The hole has a central longitudinal axis that is substantially perpendicular to the surface. The system includes a drain plug, wherein the plug is insertable into the hole along the axis into a locked position so that the fluid does not drain, and removable from the hole along the axis when disposed in an unlocked position so that the fluid drains. The system includes a locking element configured for preventing rotation of the plug within the hole about the axis when the plug is disposed in the locked position, wherein the element is formed from a metal that is substantially elastic at a temperature of from about ?40° C. to about 10° C.Type: ApplicationFiled: September 21, 2011Publication date: March 21, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Leonard Barry Griffiths, Roxann M. Bittner, David R. Staley