Patents Assigned to GM Global Technology Operation LLC
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Patent number: 9482122Abstract: A detent assembly and a method of assembling the detent assembly are disclosed. The detent assembly includes a first shaft rotatable about a longitudinal axis and has an outer surface. The first shaft defines a cavity having an opening defined by the outer surface. The detent assembly further includes a camshaft defining an aperture along the longitudinal axis to present an inner wall of the camshaft that circumscribes the longitudinal axis. The inner wall defines a plurality of recesses spaced from each other. The detent assembly also includes a self-contained plunger unit that is secured to the first shaft in the cavity as a unit. A plunger of the self-contained plunger unit engages the inner wall as the camshaft is disposed over the self-contained plunger unit so that the plunger rests in one of the recesses of the camshaft to selectively secure together the first shaft and the camshaft.Type: GrantFiled: June 30, 2014Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Joseph J. Moon, Patrick J. Tow, Domenic Certo
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Patent number: 9484605Abstract: A system and method for using exhaust gas to heat and/or charge a battery for a hybrid vehicle is provided. The system and method use an exhaust gas heat recovery (EGHR) device to heat a heat transfer fluid. The heat transfer fluid is thermally connected to a first heat exchanger to heat the battery and/or to a second heat exchanger to charge the battery if predetermined conditions are met.Type: GrantFiled: November 29, 2012Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Joseph M. Tolkacz, Brian L. Spohn
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Patent number: 9481357Abstract: A powertrain includes an engine with a crankshaft rotating on a first axis, motor/generator unit (MGU), belted drive system, transmission, actuator assembly, and controller. An MGU rotor shaft rotates about a second axis. The belted drive assembly has a first pulley connected to the crankshaft, a second pulley selectively connected to the rotor shaft, and an endless rotatable drive element that connects the pulleys. The transmission is connected to the flywheel via an input clutch. The actuator assembly has a third axis parallel to the first and second axes, a linear actuator(s), pinion gears translatable along the third axis to selectively engage the first and second gear elements, and overrunning clutches to passively disengage the pinion gears from the first or second gear element. The controller transmits control signals to the MGU and linear actuators to command a control state via translation of the pinion gears.Type: GrantFiled: December 30, 2014Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Chandra S. Namuduri, Alexandru Rajala, Alan G. Holmes, Thomas Wolfgang Nehl, Venkata Prasad Atluri, Madhusudan Raghavan
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Patent number: 9481236Abstract: A powertrain is disclosed. A ring gear is attached to a first distal end of a crankshaft such that the ring gear and the crankshaft are rotatable in unison about a longitudinal axis. A motor-generator includes a motor/generator shaft rotatable about a first axis spaced from the longitudinal axis. A starter mechanism includes a first starter gear coupleable to the motor/generator shaft and rotatable about a second axis spaced from the longitudinal axis. The first and second axes are spaced and substantially parallel to each other. The first starter gear is movable along the second axis between a first position engaging the ring gear such that torque is transferred from the motor/generator shaft through the first starter gear and the ring gear to the crankshaft to start the engine, and a second position disengaged from the ring gear to rotatably disconnect the starter mechanism from the ring gear.Type: GrantFiled: March 13, 2014Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Alan G. Holmes, Michael G. Reynolds, Alexandru Rajala, Chandra S. Namuduri
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Patent number: 9482164Abstract: A system includes a turbocharged engine, sensors, and a controller. The engine includes an engine intake manifold, air intake manifold, a compressor, a first aftercooler device, a throttle that admits cooled compressed air to the engine intake manifold, and cylinders. The sensors determine engine status signals and include a first manifold pressure (MAP) sensor positioned with respect to the first aftercooler device, a second MAP sensor positioned with respect to the engine intake manifold, a mass airflow (MAF) sensor positioned in the air intake manifold, a first manifold temperature (MAT) sensor positioned in the engine intake manifold, and a second MAT sensor positioned between the first aftercooler device and the throttle. The controller executes a method to calculate a cylinder air charge using an oxygen level of post-combustion gasses and the engine status signals, and controls an operation of the engine using the calculated air charge via engine control signals.Type: GrantFiled: March 30, 2015Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Hossein Javaherian, Shifang Li, Yiran Hu, Jun-Mo Kang, Chen-Fang Chang
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Patent number: 9481325Abstract: A system for controlling access into a vehicle in the event of loss of electrical power is disclosed. The vehicle has an access opening into the vehicle's interior with a first door for access thereto, a cargo enclosure with a second door therefor, and an energy storage device for generating the electrical power. A first latch selectively latches and unlatches the first door, while a first switch operates the first latch. A second latch selectively latches and unlatches the second door, while an actuator connects the second door to the vehicle body and selectively opens and closes the second door. A second switch selectively connects a motor-generator to the energy storage device for operating the actuator in a first mode and disconnects the motor-generator from the energy storage device for generating electric current when the second door is operated manually to operate the first latch in a second mode.Type: GrantFiled: April 21, 2015Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventor: Richard J. Lange
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Patent number: 9482125Abstract: A regeneration system includes a first comparison module that at least one of (i) compares a first temperature of an adsorber to an adsorber release temperature and (ii) compares a second temperature of an engine to a predetermined temperature, and generates a first comparison signal. A second comparison module that compares a particulate matter output of the engine with a predetermined output and generates a second comparison signal. A mode selection module that selects a mode and generates a mode signal based on the first comparison signal and the second comparison signal. A bypass valve control module that adjusts position of a bypass valve to bypass at least one of a particulate matter (PM) filter and the adsorber based on the mode signal.Type: GrantFiled: September 14, 2010Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Eugene V. Gonze, Halim G. Santoso, Michael J. Paratore, Jr.
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Patent number: 9481034Abstract: Methods of forming bi-metallic castings are provided. In one method, a metal preform of a desired base shape is provided defining a substrate surface. A natural oxide layer is removed from the substrate surface, yielding a cleaned metal preform. The method includes forming a thin metallic film on at least a portion of the substrate surface of the cleaned metal preform, and metallurgically bonding the portion of the metal preform having the metallic film with an overcast metal to form a bi-metallic casting. The metallic film promotes a metallurgical bond between the metal preform and the overcast metal. In one aspect, the metal preform may include aluminum (Al) and the metallic film may include zinc (Zn).Type: GrantFiled: December 6, 2013Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Yiqing Chen, Aihua A. Luo, Anil K. Sachdev
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Patent number: 9481262Abstract: A vehicle includes an electric motor, a direct current power source, and an inverter operatively connected to the direct current power source and the electric motor. The inverter is configured to convert direct current from the power source to alternating current and to transmit the alternating current to the electric motor. The inverter is characterized by an on status and an off status. A controller is operatively connected to the inverter and is configured to control whether the inverter is on or off. The controller is configured to selectively cause the inverter to enter a mode of operation in which the inverter cycles between being on and off.Type: GrantFiled: April 2, 2014Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Min-Joong Kim, Jinming Liu, Sean W. McGrogan
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Patent number: 9482329Abstract: A torque transmission device for a powertrain system includes a continuously variable unit (CVU) of a continuously variable transmission (CVT) arranged in parallel with a fixed-gear-ratio transmission. The fixed-gear-ratio transmission includes first and second planetary gear sets and a plurality of transmission clutches, wherein the first and second planetary gear sets are arranged to transfer torque between an input member and an output member in one of first and second fixed-gear-ratio modes by selectively activating the transmission clutches. The torque transmission device operates in a first fixed overdrive input/output speed ratio when the CVU input clutch is deactivated and a first set of two of the transmission clutches is activated. The torque transmission device operates in a second fixed overdrive input/output speed ratio when the CVU input clutch is deactivated and a second set of two of the transmission clutches is activated.Type: GrantFiled: January 8, 2015Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Chi-Kuan Kao, Chunhao J. Lee, Kumaraswamy V. Hebbale, Farzad Samie
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Patent number: 9481338Abstract: A method of manufacturing a trim component includes forming a skin layer of the trim component, and spraying a foam layer on the skin layer according to a first spray pattern that establishes a first gap in the foam layer arranged as a predetermined tear pattern. The skin layer extends across the first gap. A corresponding trim component has a skin layer with an outer surface and an inner surface opposite the outer surface, and a foam layer sprayed on the inner surface of the skin layer according to a predetermined spray pattern so that the foam layer has a first gap arranged as a predetermined tear pattern, with the skin layer extending across the first gap.Type: GrantFiled: April 21, 2015Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Lorin A. Mazur, Jeffrey T. Kinser
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Patent number: 9481240Abstract: A cover assembly for a filling port of a vehicle includes a hinge structure and a cover portion. The hinge structure includes an interface portion having a plurality of retention tabs. Each of the plurality of retention tabs include an inboard surface that is spaced from an outboard surface of the interface portion. The cover portion includes a plurality of cover tabs. Each of the cover tabs include an outboard surface that is spaced from an inboard surface of the cover portion. The cover portion is disposed adjacent the outboard surface of the interface portion. Each of the retention tabs is engaged with one of the cover tabs in interlocking engagement. Each of the cover tabs is disposed between one of the retention tabs and the interface portion. Each of the retention tabs is disposed between one of the cover tabs and the cover portion.Type: GrantFiled: August 25, 2015Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Matthew M. Stack, Robin L. Champion
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Patent number: 9482339Abstract: A continuously variable transmission (CVT) includes input and output members, a primary variator pulley, and a secondary variator pulley. The respective variator pulleys are responsive to primary and secondary pressures. Speed sensors measure a respective rotational speed of each variator pulley. A controller executes a method by receiving the measured rotational speeds, calculating a current speed ratio of the CVT above a threshold CVT speed ratio using the rotational speeds, comparing the calculated current speed ratio to calibrated threshold ratios during a sudden stop event of the vehicle, and selectively executing a CVT control action after the calculated current speed ratio drops below the threshold CVT speed ratio during the sudden stop event. The control action depends on which of the threshold ratios is exceeded by the calculated current speed ratio after the calculated current speed ratio drops below the threshold CVT speed ratio, and on the measured rotational speeds.Type: GrantFiled: March 6, 2015Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Paul G. Otanez, Zhen J. Zhang
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Patent number: 9482330Abstract: A transmission for transferring mechanical power between an input member and an output member is described, and includes a first synchronous electric machine including a first stator, a first distal rotor and a first proximal rotor and a second synchronous electric machine including a second stator, a second distal rotor and a second proximal rotor. The input member rotatably couples to the first distal rotor and to the second proximal rotor and the output member rotatably couples to the second distal rotor and to the first proximal rotor. Mechanical power is transferrable between the input member and the output member without torque being applied by the first stator.Type: GrantFiled: May 12, 2015Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Alan G. Holmes, Norman K. Bucknor
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Patent number: 9481488Abstract: A pallet assembly and a lid apparatus for the pallet assembly include a first lid segment and a second lid segment selectively cooperating with each other. The lid segments each include an outer edge and an inner edge spaced in an opposing relationship. The inner edges of the lid segments are configured to face each other. The first lid segment includes a first locking feature disposed proximal to the inner edge of the first lid segment and the second lid segment includes a second locking feature disposed proximal to the inner edge of the second lid segment. The lid segments are movable between an engaged position in which the locking features engage each other to secure the lid segments together to define a complete lid, and a disengaged position in which the locking features disengage from each other to separate the lid segments.Type: GrantFiled: February 27, 2015Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventor: Neal A. Lewis
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Patent number: 9482710Abstract: An electrical part testing system for evaluating quality of an insulated electrical part, including a computer-controlled switching apparatus for providing an original voltage to the electrical part automatically according to a pre-established testing scheme calling for provision of voltage to each phase of the part, in turn, while grounding the other phases of the part. A high-frequency filter for receiving receive the original voltage, receiving a load voltage emanating from the electrical part in response to the part receiving the original voltage, and filtering the original voltage from the load voltage to isolate any partial-discharge voltage added to the original voltage by the electrical part while the part is being electrified by the original voltage, yielding a filtered signal. A computing device determines, based on a comparison of a peak amplitude of the partial-discharge inception voltage to a voltage threshold, the quality of the electrical part being tested.Type: GrantFiled: September 11, 2013Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: John S. Agapiou, Thomas A. Perry, Jon Matthew Radlick
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Patent number: 9481224Abstract: An active airflow outlet for a vehicle and method for facilitating airflow through an active airflow outlet are provided. The active airflow outlet may operate in one of a static mode and an active mode. The active airflow outlet may include a motor, a gear assembly, a plurality of vent blades, and at least one control mechanism. The gear assembly may be operatively connected to the motor and the plurality of vent blades. The plurality of vent blades may be capable of occupying one of an open position and a closed position. The at least one control mechanism may be configured to signal the plurality of vent blades to rotate from the closed position to the open position and signal the motor to rotate the gear assembly and the plurality of vent blades in the active mode to facilitate additional airflow through the active airflow outlet.Type: GrantFiled: November 1, 2012Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventor: Gerard Brinas
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Patent number: 9482173Abstract: An indicated mean effective pressure (IMEP) module determines IMEPs for combustion cycles of cylinders of an engine, respectively. A coldstart indication module indicates whether the engine is in a cold state after a startup of the engine. A fueling correction module, when the engine is in the cold state, selectively increases a fueling correction for one of the cylinders based on the IMEP of the one of the cylinders. An equivalence ratio (EQR) module selectively increases an EQR of the one of the cylinders based on the fueling correction for the one of the cylinders.Type: GrantFiled: August 12, 2014Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Kenneth J. Buslepp, Julian R. Verdejo, Bruce F. Hunter, Daniel G. Brennan
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Patent number: 9482328Abstract: A torque transmission device for a powertrain system is described, and includes a continuously variable unit (CVU) of a continuously variable transmission (CVT) arranged in parallel with a fixed-gear-ratio transmission to transfer torque between a transmission input member and a transmission output member. The fixed-gear-ratio transmission includes first and second planetary gear sets arranged to transfer torque between the transmission input member and the transmission output member in one of a plurality of fixed-gear-ratio modes by selectively activating a plurality of transmission clutches. The transmission input member rotatably couples to one of the nodes of the first planetary gear set and one of the nodes of the second planetary gear set. The torque transmission device transfers torque in one of a continuously variable mode, a fixed underdrive input/output speed ratio, or a fixed overdrive input/output speed ratio.Type: GrantFiled: January 8, 2015Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventors: Chi-Kuan Kao, Chunhao J. Lee, Kumaraswamy V. Hebbale, Farzad Samie
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Patent number: 9483707Abstract: A method for recognizing a known object in a field of view of a three-dimensional (3D) vision system includes capturing a bitmap image file of the field of view and executing a first feature extraction to generate appearance features including a color histogram and an edge direction histogram. A reduced search space is identified based upon the appearance features including the color histogram and the edge direction histogram. A second feature extraction of the bitmap image file is executed to identify geometric features including a viewpoint feature histogram and an ensemble of shape functions. The appearance features and the geometric features are fused with contents of the reduced search space. The fused appearance features, geometric features and contents of the reduced search space are compared with a plurality of predetermined partial views of a plurality of known objects to recognize one of the known objects.Type: GrantFiled: February 4, 2015Date of Patent: November 1, 2016Assignee: GM Global Technology Operations LLCInventor: Zhichao Chen