Patents Assigned to GM
  • Patent number: 8187130
    Abstract: A multiple speed transmission for a motor vehicle includes an input member, an output member, four planetary gear assemblies, each with first, second, and third members, a plurality of torque transmitting devices, an electric motor, and a switching device that selectively couples the electric motor to the input member and selectively couples the electric motor to one of the members of one of the planetary gear assemblies. The electric motor can be employed for regenerative braking. Further, the electric motor can be employed to launch and drive the motor vehicle with each of the gear ratios of the multi-speed transmission.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Edward W. Mellet, James B. Borgerson, James M. Hart
  • Patent number: 8187138
    Abstract: A front wheel drive transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and brakes arranged within a transmission housing.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Clinton E. Carey, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
  • Patent number: 8186686
    Abstract: A seal for a vehicle having a transmission output shaft and a transmission output shaft housing is provided. The seal comprises a contact member at least partially surrounding and contacting the transmission output shaft, a support member coupled to the contact member, the support member at least partially surrounding the transmission output shaft and extending along the transmission output shaft, the support member coupled to the transmission output shaft housing, and an electrically-conductive surface overlying at least a portion of the contact member and at least a portion of the support member, the electrically-conductive surface contacting the transmission output shaft and the transmission output shaft housing.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Xiaoling Jin, William T. Ivan
  • Patent number: 8190330
    Abstract: A system and method for providing steering control for lane changing and lane centering purposes in an autonomous or semi-autonomous vehicle system. A vehicle vision system calculates roadway lane marking information, such as lateral offset, yaw angle and roadway curvature with respect to the vehicle's centered coordinate system. The roadway is then modeled as a second order polynomial equation. The method then predicts roadway lateral position and yaw angle over a pre-defined lane change completion time using a vehicle dynamic model. The method then compares a predicted vehicle path with a desired vehicle path to generate an error value, and calculates a steering angle command to minimize the error value, where the steering angle command is calculated as a function of vehicle lateral position, vehicle lateral speed, vehicle yaw rate and vehicle yaw angle. The steering angle command is then sent to the vehicle steering system.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventor: Jin-Woo Lee
  • Patent number: 8186466
    Abstract: A method of controlling a vehicular electrical system for a hybrid electric vehicle (HEV) includes providing a high voltage electrical system having a high power electrical energy storage device (HPD) and a power inverter that cooperate to provide power to a hybrid electric vehicle propulsion system, providing a low voltage electrical system having a low voltage power source, at least one accessory power load, and a control switch, and toggling the control switch between an opened and a closed position to isolate the low voltage system from the high voltage system when the switch is opened and to charge the HPD when the control switch is closed.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Mark W. Verbrugge, Lance W. Turner, Andres V. Mituta
  • Patent number: 8186536
    Abstract: A boss for use with a vessel is disclosed. The boss includes a first component adapted to be formed in an opening of the vessel, wherein the first component includes a first coupling element, and a second component including a second coupling element, wherein the second coupling element engages the first coupling element to secure the second component to the first component, and wherein a liner of the vessel is disposed therebetween.
    Type: Grant
    Filed: November 4, 2009
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventor: Ludger Strack
  • Patent number: 8190341
    Abstract: A method of controlling an auxiliary pump for use with a transmission in a vehicle is provided, the vehicle having a system voltage/current. The method comprises: determining an optimal auxiliary pump start voltage/current; determining if the system voltage/current is less than the optimal auxiliary pump start voltage/current; if yes, determining if the auxiliary pump is in a start-mode and if a predetermined override condition has been met; determining if the actual auxiliary pump speed is less than a desired auxiliary pump speed if the auxiliary pump is in the start-mode; if not, determining if the auxiliary pump is in an on-state; and, increasing an actual auxiliary pump voltage/current to equal the optimal auxiliary pump start voltage/current if the actual auxiliary pump speed is less than the desired auxiliary pump speed or the predetermined override condition has been met.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventor: Karl Andrew Sime
  • Patent number: 8187145
    Abstract: A method for controlling hydraulic line pressure of a hydraulic control system in an electro-mechanical transmission mechanically-operatively coupled to an internal combustion engine and an electric machine adapted to selectively transmit mechanical power to an output member via selective application of a plurality of hydraulically-applied torque transfer clutches includes monitoring requirements for transmission of clutch reactive torque in one of the clutches, monitoring a hydraulic line pressure within the hydraulic control system, determining a minimum clutch torque capacity required to keep the clutch from slipping, determining a hydraulic line pressure required to create the minimum clutch torque capacity, and modulating hydraulic line pressure applied to the clutch by modulating operation of the hydraulic control system based upon the hydraulic line pressure required to create the minimum clutch torque capacity.
    Type: Grant
    Filed: October 13, 2008
    Date of Patent: May 29, 2012
    Assignees: GM Global Technology Operations LLC, Daimler AG, Chrysler LLC, Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Lawrence A. Kaminsky, Anthony H. Heap, Jy-Jen F. Sah
  • Patent number: 8190331
    Abstract: Systems for detecting animate objects in a vehicle compartment include active materials based sensors for detecting the presence of an animate object in the compartment. The systems produce a response if the sensors detect the presence of an animate object in the compartment and at least one other predetermined condition exists.
    Type: Grant
    Filed: November 1, 2007
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan L. Browne, Nancy L. Johnson, James Y. Khoury, Artie J Martin, Pablo D. Zavattieri, William Barvosa-Carter
  • Patent number: 8186059
    Abstract: An internal gear and cap assembly includes a gear having a base that extends about an axis between a first and second end. The first end defines a groove that extends to a floor and the groove surrounds the axis. Teeth extend from the base. A lip extends from the first end and also surrounds the axis. A cap has a flange that is inserted into the groove. The lip is deformed toward the groove such that material from the lip flows to trap the flange between the lip and the floor of the groove to retain the cap to the gear in the axial direction. Slots may be defined in the flange such that the material from the lip flows into the slots to provide a key-lock between the cap and the gear to prevent rotation of the cap relative to the gear about the axis.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Jeffrey R. Lee, Stephen D. Doubler, Travis M. Thompson, Steven L. Clark, Richard Vriesen
  • Patent number: 8188616
    Abstract: A vehicle includes a high-voltage (HV) energy storage system (ESS), an HV power bus, a DC-DC power converter electrically connected to the HV power bus, an HV bus connector, a low voltage (LV) battery power bus, and a pair of LV bus connectors. The vehicle includes a vehicle module electrically connected to the HV and LV bus connectors, an LV power bus electrically connected to the DC-DC power converter and to the module, and a controller. The controller has an algorithm that controls the converter to power the module via one of the LV bus connectors during a transient LV condition. The converter and a method of controlling the same are also provided, with the method including determining the LV condition, powering the vehicle module via one of the LV bus connectors during the transient LV condition, and powering the module via the other LV connector otherwise.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Erik Charles Nordstrom, Mohammad N. Anwar, David P. Tasky, Alan G. Holmes, Mehrdad Teimorzadeh
  • Patent number: 8187147
    Abstract: A hydraulic control system for distributing pressurized fluid to a multi-mode hybrid-type power transmission is provided, as well as a method for regulating the same. The hydraulic control system includes an engine-driven main pump in fluid communication with a main regulator valve, and an electrically-driven auxiliary pump in fluid communication with an auxiliary regulator valve. One pressure control solenoid provides feedback (boost) pressure to both regulator valves, and thereby modify output of the main and auxiliary pumps. A controller selectively modifies distribution of boost pressure to ensure a continuous and controllable feed of hydraulic pressure to the transmission during all vehicle operations.
    Type: Grant
    Filed: July 14, 2008
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Eric S. Tryon, Michael D. Foster
  • Patent number: 8187440
    Abstract: A method of coating a magnesium-based substrate includes applying a first potential of electric current to the substrate and, after applying, immersing the substrate in an electrocoat coating composition. After immersing, a second potential of electric current is applied between the substrate and a counter electrode to deposit the electrocoat coating composition onto the substrate. The second potential is greater than the first potential. The method also includes curing the electrocoat coating composition to form a cured film and thereby coat the substrate. An electrocoat coating system includes the magnesium-based substrate, and the cured film disposed on the substrate and formed from the electrocoat coating composition. The substrate exhibits a negative charge from an applied first potential of electric current of ? approximately 40 V prior to contact with the electrocoat coating composition.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventor: Guangling Song
  • Patent number: 8190322
    Abstract: A system and method for providing autonomous and remote vehicle maintenance and repair. The system employs an on-board diagnosis and prognosis module that monitors one or more vehicle buses to identify trouble codes and other information indicating a vehicle problem. The on-board module causes a telematic device on the vehicle to broadcast a message including a problem code that identifies the problem the vehicle is having. A remote repair center may receive the message and may identify a software upgrade patch associated with the problem that can be transmitted to the vehicle to upgrade its software to correct the problem. Also, the message may be received by another vehicle that is part of a broadcast network that has previously received the software upgrade patch to fix a problem on that vehicle, where the receiving vehicle may transmit the software upgrade patch to the vehicle having the problem.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: William C. Lin, Bakhtiar Brian Litkouhi, Ansaf I. Alrabady, Balarama V. Murty, Xiaodong Zhang, Steven W. Holland, Mutasim A. Salman, Rami I. Debouk, Yuen-Kwok W Chin
  • Patent number: 8188601
    Abstract: A semiconductor subassembly is provided for use in a switching module of an inverter circuit for a high power, alternating current motor application. The semiconductor subassembly includes a wafer having first and second opposed metallized faces; a semiconductor switching device electrically coupled to the first metallized face of the wafer and having at least one electrode region; and an interconnect bonded to the semiconductor switching device. The interconnect includes a first metal layer bonded to the at least one electrode region of the semiconductor switching device, a ceramic layer bonded to the first metal layer, the ceramic layer defining a via for accessing the first metal layer, a second metal layer bonded to the ceramic layer, and a conducting substance disposed in the via of the ceramic layer to electrically couple the first metal layer to the second metal layer.
    Type: Grant
    Filed: June 6, 2007
    Date of Patent: May 29, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Terence G. Ward, Edward P. Yankoski
  • Publication number: 20120125282
    Abstract: An engine assembly may include an engine block, a first piston, a second piston, and a cylinder head. The first piston may be located in a first cylinder bore and the second piston may be located in a second cylinder bore. The cylinder head may be coupled to the engine block and cooperate with the first cylinder bore and the first piston to define a first combustion chamber and with the second cylinder bore and the second piston to define a second combustion chamber. The cylinder head may define a first intake and exhaust port arrangement in communication with the first combustion chamber and may define a second intake and exhaust port arrangement in communication with the second combustion chamber. The second intake and exhaust port arrangement may include a greater total number of ports than the first intake and exhaust port arrangement.
    Type: Application
    Filed: November 19, 2010
    Publication date: May 24, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventor: ALAN W. HAYMAN
  • Publication number: 20120129640
    Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque-transmitting devices. Further, a hydraulic fluid control circuit is provided for controlling the operation of the plurality of torque-transmitting devices. The hydraulic fluid control circuit receives pressurized hydraulic fluid from an off-axis hydraulic fluid pump and has a plurality of fluid passages disposed in the transmission house, input member and other coupling members.
    Type: Application
    Filed: January 30, 2012
    Publication date: May 24, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Patrick S. Portell, John A. Diemer, James M. Hart, Scott H. Wittkopp, Edwin T. Grochowski, Douglas John Dwenger, Elizabeth I. Wooden, Boris Burgman, Clinton E. Carey, Tejinder Singh
  • Publication number: 20120130574
    Abstract: A vehicle includes a transmission, a motor configured to provide a motor torque to the transmission, and an engine configured to provide an engine torque to the transmission. A torque converter is operably disposed between the transmission and the motor, the engine, or both. The torque converter is configured to at least partially transfer at least one of the motor torque and the engine torque to the transmission in accordance with a plurality of k-factors. The torque converter includes a clutch configured to at least partially engage to change the effective k-factor applied by the torque converter. A control processor is configured to blend the plurality of k-factors and at least partially engage the clutch based on the blended k-factor.
    Type: Application
    Filed: November 24, 2010
    Publication date: May 24, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Shawn H. Swales, Hong Yang, Amanda Luedtke, Andrew W. Phillips, Joel M. Maguire
  • Publication number: 20120126521
    Abstract: A steering column assembly includes a rake bracket, a steering column pivotably attached to the rake bracket and a rake lock mechanism. The rake lock mechanism includes a plurality of rake teeth located at the rake bracket and a plurality of jacket teeth engageable with the plurality of rake teeth and located at the steering column at a teeth distance from the plurality of rake teeth. A retainer is insertable through the rake bracket and into the steering column to maintain the teeth distance. When a predetermined force is applied to the steering column, a portion of the retainer is detached to allow the plurality of jacket teeth to approach the plurality of rake teeth and engage therewith.
    Type: Application
    Filed: November 23, 2010
    Publication date: May 24, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Melvin Lee Tinnin, Kevin M. Burns
  • Publication number: 20120126822
    Abstract: A method of evaluating an electrically conductive wire segment having an insulated intermediate portion and non-insulated ends includes passing the insulated portion of the wire segment through an electrically conductive brush. According to the method, an electrical potential is established on the brush by a power source. The method also includes determining a value of electrical current that is conducted through the wire segment by the brush when the potential is established on the brush. The method additionally includes comparing the value of electrical current conducted through the wire segment with a predetermined current value to thereby evaluate the wire segment. A system for evaluating an electrically conductive wire segment is also disclosed.
    Type: Application
    Filed: November 19, 2010
    Publication date: May 24, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Edward Panozzo, Harold Parish