Patents Assigned to GM
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Patent number: 9405982Abstract: A method for detecting an eyes-off-the-road condition based on an estimated gaze direction of a driver of a vehicle includes monitoring facial feature points of the driver within image input data captured by an in-vehicle camera device. A location for each of a plurality of eye features for an eyeball of the driver is detected based on the monitored facial features. A head pose of the driver is estimated based on the monitored facial feature points. The gaze direction of the driver is estimated based on the detected location for each of the plurality of eye features and the estimated head pose.Type: GrantFiled: September 30, 2013Date of Patent: August 2, 2016Assignees: GM GLOBAL TECHNOLOGY OPERATIONS LLC, CARNEGIE MELLON UNIVERSITYInventors: Wende Zhang, Dan Levi, Debbie E. Nachtegall, Fernando De La Torre, Dong Huang
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Patent number: 9406229Abstract: A traffic flow advisory system includes a locating device for identifying a position of a driven vehicle. A communication device exchanges vehicle position data, speed data, and heading data with remote vehicles. A processor constructs a traffic flow rate in a plurality of road lanes based on the position data and speed data. A human machine interface indicates to a driver of the driven vehicle the traffic flow rate of each of the road lanes.Type: GrantFiled: November 12, 2009Date of Patent: August 2, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS, LLCInventors: Chaminda Basnayake, Donald K. Grimm
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Patent number: 9403413Abstract: Systems and methods for assisting in coupling a vehicle and a trailer include at least one sensing device disposed on the vehicle. A first coupling is coupled the vehicle and a second coupling is coupled to the trailer. A controller in communication with the at least one sensing device is configured to identify a spatial location of the first coupling. The controller is also configured to determine a spatial location of the second coupling using data from the at least one sensing device. The controller may also calculate a path between the spatial location of the first coupling and the spatial location of the second coupling and convey the path for facilitating movement of the first coupling toward the second coupling.Type: GrantFiled: May 7, 2015Date of Patent: August 2, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Timothy J. Talty, Mark E. Shields, Wende Zhang, Michael A. Wuergler, Vernon Hole
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Patent number: 9403209Abstract: Methods, systems, and apparatus for reduction of gas pressure within a core, such as a sand casting core package, during a casting process in order to reduce bubble defects. Some embodiments may comprise a mold configured to receive a molten metal to create a metal casting, such as an engine block casting. The mold may comprise a mold core configured to create a cavity within the metal casting. The system may further comprise a filling device configured for delivering a molten metal into the mold for creating the metal casting. The mold core may comprise a material that is permeable to certain gases known to often result in bubble defects. The system may further comprise a vacuum configured to be coupled with the mold to reduce gas pressure within a permeable portion of the mold in order to reduce the incidence of bubble defects within the casting.Type: GrantFiled: January 22, 2013Date of Patent: August 2, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Christopher D. Cogan, James T. Singer, Stephen M. Fitch, Maurice G. Meyer, David D. Goettsch
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Patent number: 9404575Abstract: A transmission control module comprises an actuation module and a flare control module. The actuation module controls actuation of a friction device used in shifting from a first transmission ratio to a second transmission ratio. The transmission ratio is based on an input speed of a transmission divided by an output speed of the transmission. The first transmission ratio is greater than the second transmission ratio. The flare control module selectively generates an engine torque reduction request when a measured transmission ratio is greater than a threshold during a shift from the first transmission ratio to the second transmission ratio.Type: GrantFiled: January 3, 2008Date of Patent: August 2, 2016Assignee: GM Global Technology Operations LLCInventors: James Robert Somerville, John J. Koenig, Christopher A. Spangler, Andriy Nikitin
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Patent number: 9407178Abstract: A voltage source inverter controller for controlling an inverter electrically connected to an electric machine includes a current command generator, a six-step flux controller and a current regulator. The six-step flux controller generates a flux modifier to regulate flux in a flux-weakening speed/load operating region of the electric machine when operating the electric machine in a six-step mode. The current command generator converts a desired torque to three-phase desired currents that are input to a dq0-dq transformer and combined with the flux modifier to determine a modified-flux direct-quadrature (dq) current request. The current regulator includes a proportional-integral feedback controller, anti-windup elements, a dq voltage limit element and a voltage magnitude limiter. The proportional-integral feedback controller and the anti-windup elements perform closed-loop current control on the modified-flux dq current request to determine commanded dq voltages.Type: GrantFiled: November 14, 2014Date of Patent: August 2, 2016Assignee: GM Global Technology Operations LLCInventors: Jung Sik Yim, Jihoon Jang, Bon Ho Bae, Milan A. Vadera
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Patent number: 9405192Abstract: A method for fabricating a radiation-cured structure is provided. The method includes the steps of providing a first radiation-sensitive material and a second radiation-sensitive material adjacent the first radiation-sensitive material. The first radiation-sensitive material has a first sensitivity. The second radiation-sensitive material has the first sensitivity and a second sensitivity different from the first sensitivity. At least one mask is placed between at least one radiation source and the first and second radiation-sensitive materials. The mask has a plurality of substantially radiation-transparent apertures. The first and second radiation-sensitive materials are then exposed to a plurality of radiation beams through the radiation-transparent apertures in the mask to form a first construct in the first radiation-sensitive material and a second construct in the second radiation-sensitive material. The first construct and the second construct cooperate to form the radiation-cured structure.Type: GrantFiled: April 18, 2011Date of Patent: August 2, 2016Assignee: GM Global Technology Operations LLCInventors: Jeffrey A. Rock, Gerald W. Fly, Yeh-Hung Lai, Keith E. Newman, Alan J. Jacobsen, William B. Carter, Peter D. Brewer, Hung D. Nguyen, Joanna A. Kolodziejska
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Patent number: 9403273Abstract: A method of training a robot to autonomously execute a robotic task includes moving an end effector through multiple states of a predetermined robotic task to demonstrate the task to the robot in a set of n training demonstrations. The method includes measuring training data, including at least the linear force and the torque via a force-torque sensor while moving the end effector through the multiple states. Key features are extracted from the training data, which is segmented into a time sequence of control primitives. Transitions between adjacent segments of the time sequence are identified. During autonomous execution of the same task, a controller detects the transitions and automatically switches between control modes. A robotic system includes a robot, force-torque sensor, and a controller programmed to execute the method.Type: GrantFiled: May 23, 2014Date of Patent: August 2, 2016Assignee: GM Global Technology Operations LLCInventors: David W. Payton, Ryan M. Uhlenbrock, Li Yang Ku
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Patent number: 9404427Abstract: An engine assembly includes an engine block defining a cylinder, an exhaust system, and an exhaust gas recirculation system. A first exhaust valve is configured to control the flow of fluid from the cylinder to the exhaust system. A second exhaust valve configured to control the flow of fluid from the cylinder to the exhaust gas recirculation system. The second valve is deactivatable independently of the first valve, thereby enabling EGR flow.Type: GrantFiled: June 22, 2012Date of Patent: August 2, 2016Assignee: GM Global Technology Operations LLCInventor: Edward J. Keating
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Patent number: 9403275Abstract: A robotic system includes an end-effector, an input device, and a controller. The input device is operable for collecting data defining a position and a velocity of a dynamic obstacle in an environment of the end-effector. The dynamic obstacle has an arbitrary shape. The controller is in communication with the end-effector and is programmed to execute a method and thereby receive a set of inputs via the input device, including the position and velocity of the dynamic obstacle. The controller computes a contour function defining the closest allowed distance and direction between the end-effector and the dynamic obstacle using the Gilbert-Johnson-Keerthi algorithm, and controls the end-effector via an output command to thereby avoid contact between the end-effector and the dynamic obstacle.Type: GrantFiled: October 17, 2014Date of Patent: August 2, 2016Assignee: GM Global Technology Operations LLCInventors: Heiko Hoffmann, Derek Mitchell
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Patent number: 9404438Abstract: A method and a device for supporting a driver of a motor vehicle in utilizing an automatic engine start-stop system of the motor vehicle is provided. The method includes registering and storing, for at least one operating time of the motor vehicle and for each engine stop of a total number initiated by the automatic engine start-stop system in the operating time, at least the respective time durations where k=0, 1, 2, . . . P, where P?[0, 1, 2, . . . ]. A first ratio value that is dependent on the operating time and the added time durations determined: W 1 = ? k = 0 P B ? ? t MS , k t B . ( 1 ) The first ratio value is output and/or an output which is dependent on the first ratio value is generated and output.Type: GrantFiled: August 8, 2013Date of Patent: August 2, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Dirk Balzer, Stipe Dujic
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Patent number: 9404451Abstract: A number of variations may include an air cleaner assembly which comprises a first housing portion having at least one air inlet aperture. The air cleaner assembly may further include a second housing portion operably coupled to the first housing portion and having at least one air outlet aperture. Moreover, a filter media may be disposed between the first housing portion and the second housing portion. At least one insulator may be integrally formed with the filter media. The entire filter media including the insulator may be removable and replaceable.Type: GrantFiled: April 11, 2014Date of Patent: August 2, 2016Assignee: GM Global Technology Operations LLCInventor: Giovanni F. Bernardo
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Patent number: 9404436Abstract: Methods and apparatus for operating an internal combustion engine are provided. The engine has an engine block defining a cylinder accommodating a reciprocating piston coupled to rotate a crankshaft, a fuel injector for injecting fuel inside the cylinder, and a crank position sensor positioned proximal to the crankshaft. A method includes commanding the fuel injector to perform a test fuel injection with a predetermined energizing time and using the crank position sensor to determine a crankshaft acceleration signal during the test fuel injection. The crankshaft acceleration signal is filtered and a value of an amplitude of a fundamental frequency component of the filtered crankshaft acceleration signal is determined. A correction factor of the predetermined energizing time is determined based on a difference between the determined value of the amplitude and a preset value thereof. The correction factor is used to correct an energizing time of subsequent fuel injections.Type: GrantFiled: October 22, 2012Date of Patent: August 2, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Ignazio Dentici, Michele Bastianelli
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Patent number: 9404466Abstract: An internal combustion engine employs a starting system. A method for evaluating the starting system includes determining a cranking resistance ratio between a starter and a battery of the starting system during engine cranking. The cranking resistance ratio is normalized based upon an operating temperature of the starting system, and the starting system is evaluated based upon the normalized cranking resistance ratio.Type: GrantFiled: June 14, 2014Date of Patent: August 2, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Xinyu Du, Atul Nagose, Yilu Zhang
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Patent number: 9403417Abstract: A method for preconditioning a vehicle includes the steps of obtaining a temperature inside the vehicle and remotely starting an engine of the vehicle, an environmental control system of the vehicle, or both, if the temperature inside the vehicle is within a predetermined range of temperatures.Type: GrantFiled: March 12, 2009Date of Patent: August 2, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: David T. Proefke, Clark E. McCall, William A. Biondo
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Patent number: 9403558Abstract: An engine mount assembly includes a frame member and a cradle member. The frame member defines a frame hole and the cradle member defines a cradle hole. A bolt fixedly mates the frame member to the cradle member. The bolt has a bolt body, which is disposed within the frame hole and the cradle hole, and a bolt flange oriented downward relative to the vehicle. A well is defined by the frame hole or the cradle hole. The well is a volume around the bolt body capable of retaining water in contact with the frame member and or cradle member. A washer, having an interior hole and a perimeter edge, is disposed between the bolt flange and the well. At least one channel is defined in the washer and provides fluid communication between the well and the perimeter edge.Type: GrantFiled: May 15, 2015Date of Patent: August 2, 2016Assignee: GM Global Technology Operations LLCInventors: Kevin J. Pohl, Kenneth J. Hsu, William A. Morris, Frederick M. Marquardt
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Publication number: 20160215692Abstract: A two-stroke engine includes a crankcase defining a cylinder bore, a piston moveably disposed within the cylinder bore, and a cylinder head that covers the cylinder bore. A wall surface of the cylinder bore, a piston combustion surface of the piston, and a head combustion surface of the cylinder head, cooperate to define a combustion chamber for combusting a fuel therein. A thermal conductivity reducing mechanism is disposed in thermal connectivity with at least one of the crankcase, the piston, and the cylinder head for reducing heat transfer from combusted fuel within the combustion chamber to at least one of the crankcase, the piston, and the cylinder head. The thermal conductivity reducing mechanism may include a layer of low conductivity material coating one of the surfaces defining the combustion chamber, or a void in the cylinder head and/or the crankcase adjacent the combustion chamber.Type: ApplicationFiled: January 18, 2016Publication date: July 28, 2016Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Alok Warey, Michael A. Potter, Venkatesh Gopalakrishnan
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Publication number: 20160215708Abstract: A method of determining the timing and quantity of fuel injection to operate an internal combustion engine is disclosed. While operating the fuel injector to perform a fuel injection; a signal of a fuel pressure within the fuel rail during the fuel injection is sampled. The signal is used to determine first and second integral transforms yielding as output a value of first and second functions having as variables the fuel rail pressure drop caused by the fuel injection and the timing parameter indicative of the instant when the fuel injection started. Values of the first and second functions are used to calculate a value of the fuel rail pressure drop caused by the fuel injection and a value of the timing parameter. A value of a fuel quantity injected by the fuel injection is calculated as a function of the value of the fuel rail pressure drop.Type: ApplicationFiled: January 22, 2016Publication date: July 28, 2016Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Stefano NIEDDU, Andrea MOLLAR
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Publication number: 20160215785Abstract: A turbocharger for an internal combustion engine includes a bearing housing defining a bearing bore and a hybrid journal bearing system disposed within the bore. The hybrid journal bearing system includes first and second journal bearings. The first journal bearing is a semi-floating bearing and the second journal bearing is a full-floating bearing. The turbocharger also includes a shaft having a first end and a second end, wherein the shaft is supported by the journal bearing system for rotation about an axis within the bore. The turbocharger also includes a turbine wheel fixed to the shaft proximate to the first end and configured to be rotated about the axis by post-combustion gases emitted by the engine. Additionally, the turbocharger includes a compressor wheel fixed to the shaft proximate to the second end and configured to pressurize an airflow being received from the ambient for delivery to the engine.Type: ApplicationFiled: January 22, 2015Publication date: July 28, 2016Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Louis P. Begin, Dingfeng Deng, Isaac H. Y. Du
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Publication number: 20160214284Abstract: A process for fabricating a curved vehicle impact sandwich beam including a micro-truss structure. The method includes positioning a mold in contact with a curved bottom facesheet so that the mold and the bottom facesheet define a reservoir. The reservoir is filled with a liquid photo-polymer resin and a mask is positioned over the reservoir. A series of UV light sources are provided on a mounting member relative to the mask and the mounting member is flexed to conform to the shape of the bottom facesheet. Light from UV sources shines through apertures in the mask to cure and form polymerized struts in the reservoir to define the micro-truss structure formed to the facesheet.Type: ApplicationFiled: April 17, 2014Publication date: July 28, 2016Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: NILESH D. MANKAME, ELISABETH J. BERGER