Patents Assigned to GLOBAL TECHNOLOGY OPERATIONS LLC
-
Publication number: 20120330506Abstract: A method for determining and detecting end stops of a steering device of a motor vehicle, which has a servomotor, is provided. The method includes determining actual, mechanical end stops of the steering device and establishing software-controlled end stops after the actual, mechanical end stops are determined A motor vehicle comprising a steering device for the wheels of the motor vehicle is also provided. The steering device includes a servomotor and a control unit. The control unit controls the servomotor. The control unit is configured to specify software-controlled end stops for the wheels of the motor vehicle and to determine software-controlled end stops after reaching and determining actual, mechanical end stops of the wheels.Type: ApplicationFiled: June 19, 2012Publication date: December 27, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Peter KLEINHANS, Matthias REBEL
-
Publication number: 20120324858Abstract: A method of reducing an initial stress on a cable includes stretching the cable to a first length to thereby define the initial stress. The cable has a central longitudinal axis, and includes a plurality of wires each twisted around the axis and formed from a shape memory alloy transitionable in response to a signal between a first state wherein each of the wires has a first temperature-dependent length, and a second state wherein each of the wires has a second temperature-dependent length that is less than the first. After stretching, the method includes activating the alloy by exposing the alloy to the signal such that the alloy transitions from the first to the second temperature-dependent state. Concurrent to activating, the method includes elongating the cable to a second length that is greater than the first to define a second stress on the cable that is less than the first.Type: ApplicationFiled: August 16, 2012Publication date: December 27, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Alan L. Browne, Paul W. Alexander, Nancy L. Johnson
-
Publication number: 20120322377Abstract: A wireless data link system between a vehicle having a vehicle controller and a computing device having a computing processor is provided. The wireless data link system includes a vehicle data link (“VDL”) device and a computing data link (“CDL”). The VDL device has a VDL controller, a VDL memory, and a VDL interface circuitry. The VDL interface circuitry provides a connection to the vehicle controller for exchanging data. The VDL memory stores a passcode that provides a secure connection and a VDL recognizable code that is associated with the VDL device. The CDL device has a CDL controller, a CDL memory, and CDL interface circuitry. The CDL interface circuitry provides a connection to the computing processor for exchanging data.Type: ApplicationFiled: June 15, 2011Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventor: Ansaf I. Alrabady
-
Publication number: 20120319375Abstract: A front axle system for a vehicle for receiving a total loading is provided. The front axle system includes a front axle frame element and a steering gear device connected to the front axle frame element. The front axle frame element is configured for receiving a first part of the total loading and the steering gear device is configured for receiving a second, remaining part of the total loading.Type: ApplicationFiled: June 6, 2012Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Lutz UHLENBRUCH, Thomas DEGENSTEIN
-
Publication number: 20120318589Abstract: A system for maintaining tension in a drive belt comprises a first belt tensioner that comprises a first pulley mounted on a first lever arm, and a second belt tensioner that comprises a second pulley mounted on a second lever arm. The first belt tensioner is configured and positioned to bias the first pulley against the drive belt at a first location following a departure of the drive belt from a pulley coupled to a motor-generator unit and to thereby maintain tension on the drive belt during both driving and driven modes of the motor-generator unit. The second belt tensioner is configured and positioned to bias the second pulley against the drive belt at a second location prior to an approach of the drive belt toward the pulley and to thereby maintain tension on the drive belt at the second location during both driving and driven modes.Type: ApplicationFiled: June 19, 2012Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Eric D. Staley, William C. Deneszczuk, Paul J. Mc Vicar
-
Publication number: 20120317807Abstract: A method of setting lash in a cam phaser includes rotating a stator having a lobe in a first direction so that the lobe contacts a motion limiter pin disposed within a first hole in a rotor, causing the compression of a spring until a motion limiter lock pin enters a groove on the motion limiter pin and contacts a wall at one end of the groove. The rotor is then rotated in conjunction with the stator in the first direction until a rotor locking pin that is disposed within a second hole in the rotor engages a lock pin seat on a cover at one end of the seat. The rotor is then held in place while rotating the stator in a second direction so that there is a gap between the wall at one end of the groove and the motion limiter locking pin.Type: ApplicationFiled: May 15, 2012Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: William P. Vukovich, Nick John Hendriksma
-
Publication number: 20120319634Abstract: A method for controlling an electric power flow between a high-voltage battery and an electrically-powered torque machine of a powertrain system includes, upon violating a constraint associated with the electric power flow during operation of the powertrain system, executing a battery power control scheme for controlling the electric power flow including commanding an initial state for a parameter of the electric power flow, the initial state for the parameter of the electric power flow including a maximum estimated state for the parameter of the electric power flow occurring during one of a plurality of selected ones of previous timesteps.Type: ApplicationFiled: June 16, 2011Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Sean W. McGrogan, Anthony H. Heap
-
Publication number: 20120323461Abstract: A method for controlling a hybrid powertrain system including an internal combustion engine includes controlling operation of the hybrid powertrain system in response to a preferred minimum coolant temperature trajectory for the internal combustion engine.Type: ApplicationFiled: June 17, 2011Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Ryan D. Martini, Brian L. Spohn, Allen J. Lehmen, Teresa L. Cerbolles
-
Publication number: 20120322606Abstract: A planetary gear assembly having improved planet gear lubrication includes a thrust bearing assembly mounted to the planet gear carrier which provides a friction reducing interface between the carrier and a hub or stationary transmission member. A lubrication dam located radially outwardly of the thrust bearing assembly collects transmission fluid (oil) that has been supplied through a centrally disposed shaft and driven to and past the thrust bearing and into the dam by centrifugal force. Transmission fluid collecting within the dam and between the thrust bearing assembly and the planet gear carrier generates a biasing force which drives the thrust bearing assembly away from the planet gear carrier, thereby ensuring that the bearing position is not indeterminate and positively locating the thrust bearing assembly and providing an annular flow path for the transmission fluid which is then directed into a plurality of axial passageways in stub shafts which support the planet gears.Type: ApplicationFiled: June 20, 2011Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Charles Wayne Lewis, Boris Burgman
-
Publication number: 20120319460Abstract: An annular centering ring centers a wheel on a hub. The hub has a circular outer surface and an outer end face. The wheel has a central opening defined by a circular wall. The annular centering ring has an annular mounting flange structure that seats upon the circular outer surface and the outer end face of the hub, and a centering skirt structure that is engaged by the circular wall of the wheel when the wheel is installed onto the hub so that the centering skirt structure is flexed and occupies the annular space between the circular outer surface of the hub and the central opening of the wheel to thereby center the wheel upon the hub in readiness for installation of a plurality of lug nuts. The centering skirt structure is captured in a press-fit relationship between the wheel and hub, or can be extruded away during the installation of the wheel onto the hub.Type: ApplicationFiled: June 20, 2011Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventor: DONALD G. STRAITIFF
-
Publication number: 20120317786Abstract: A method of joining multiple components includes stacking the components vertically. Each component includes two opposite substantially planar surfaces that are arranged in a column when the components are stacked. The method also includes placing the stacked components in a clinch-crimping apparatus having a first punch, a second punch, and a crimping element. The method also includes displacing a section of the substantially planar surfaces of the stacked components by driving the first punch in a first direction that is substantially perpendicular to the surfaces. The method additionally includes retracting the first punch from the displaced section and crimping the displaced section by the crimping element to form a crush initiator. The method additionally includes disengaging the crimping element from the crimped, displaced section. Furthermore, the method includes clinching the crimped, displaced section by driving the second punch in a second direction that is opposite to the first direction.Type: ApplicationFiled: June 17, 2011Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Pei-Chung Wang, David Yang, Jeff Wang, Blair E. Carlson
-
Publication number: 20120322604Abstract: 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: ApplicationFiled: August 28, 2012Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: 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, Tejnder Singh
-
Publication number: 20120323418Abstract: A powertrain system includes an internal combustion engine configured to transfer torque via a clutch to an input member of a hybrid transmission having torque machines configured to transfer torque thereto. Operation of the engine is controlled to facilitate a change in activation of a clutch between the engine and the input member of the hybrid transmission.Type: ApplicationFiled: June 17, 2011Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Jy-Jen F. Sah, Anthony H. Heap, Lawrence A. Kaminsky
-
Publication number: 20120320291Abstract: A transparent 3D display system comprises a display sheet and a barrier mask, the barrier mask being separated from the display sheet by an optical thickness. The barrier mask is separated from a viewer having a right eye and a left eye. The display sheet is configured to display an image comprising first and second sets of image strips, and the barrier mask is configured to produce a plurality of alternating viewing strips and blocking strips. The viewing strips are positioned, oriented, and configured so as to allow the right eye to view the first set of image strips and the left eye to view the second set of image strips, and the blocking strips are positioned, oriented, and configured to prevent the right eye from viewing the second set of image strips and the left eye from viewing the first set of image strips.Type: ApplicationFiled: June 14, 2011Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Sam Yang, Peter G. Diehl
-
Publication number: 20120323437Abstract: A method for calibrating an adaptive chassis system of a motor vehicle within the production process of the vehicle is provided. The vehicle has a sensor for determining the compression or rebound state of an element of the chassis system. Sensor signals of the sensor are supplied to a control unit in which a generic sensor characteristic is stored. The method includes, after the installation of the element and the sensor, detecting the sensor signals as a function of the compression and rebound state of the element during the production process and supplying the sensor signals as raw data to the control unit. A dependence of the values of the sensor signals of the sensor on a measurement value defining the compression and rebound state of the element is determined from the raw data and from the generic sensor characteristic by an algorithm deposited in the control unit.Type: ApplicationFiled: May 31, 2012Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Frank BONARENS, Heiko CHARLE
-
Publication number: 20120319433Abstract: A frame structure is provided for the underbody of a self-supporting motor vehicle bodywork. The frame structure includes, but not included with an elongate tunnel and two sillboards parallel hereto. The sillboards are disposed on both sides of the tunnel. The frame structure also includes, but is not limited to a dashboard cowl with closing plate, which is connected directly to both sillboards and the tunnel, a wheel housing with a downwardly open main structural arc, the ends whereof are connected to the underbody, and on its side facing the underbody (e.g., the vehicle inner side) the main structural arc has a damper receptacle in its upper area, from which a supporting strut connected to the underbody projects downward.Type: ApplicationFiled: August 23, 2012Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Ronny BUFE, Stefan GLOGER, Jens HARTMANN, Matthias SCHLELEIN, Matthias SEYFRIED, Ralph STENGER, Dirk STREHL, Joachim KÖHR, Heinz-Günter LANG, Hans-Joachim PATSCHICKE
-
Publication number: 20120318799Abstract: A drainable container system for a vehicle includes a container defining an interior cavity configured for storing a fluid, and a drain hole configured for draining the fluid from the interior cavity. The drainable container system further includes a drain plug configured for plugging the drain hole, and a weld nut attachable to the container and configured for receiving the drain plug. The weld nut includes a coupling portion matable with the drain plug and having a longitudinal axis, and a flange portion extending from the coupling portion and disposed substantially perpendicular to the longitudinal axis. The flange portion defines at least one channel therein configured for conducting the fluid to the drain hole.Type: ApplicationFiled: June 15, 2011Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Thomas A. Spix, Karl R. Gilgenbach
-
Publication number: 20120319652Abstract: A method and system for power management among batteries of varying states of health. Two or more battery packs are switched on and off in square wave pulses to energize a multi-winding transformer, and the output of the transformer is used to power a load. As the state of charge of the battery packs decrease at different rates, the duty cycle of each battery pack's switch pulse is made proportional to its state of charge relative to the other battery packs. The battery pack with the greatest state of charge has the longest on-time and provides the most energy to the transformer, yet all battery packs contribute. A baseline duty cycle is computed by a proportional integral control module, based on voltage measurements at the load. Energy contribution is managed so that state of charge does not diverge even when the battery packs have widely varying states of health.Type: ApplicationFiled: June 17, 2011Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Andrew J. Namou, Christopher A. Schlaupitz, Todd F. Mackintosh, John Reed
-
Publication number: 20120318476Abstract: A vehicle includes a body that defines an opening in a forward end thereof. A heat exchanger and an inlet of a brake duct are each positioned rearward of the opening to receive a flow of air through the opening. A shutter system is movable between an open position to allow airflow through the opening and a closed position to block airflow through the opening. The shutter system controls the airflow to both the heat exchanger and to the inlet of the brake duct.Type: ApplicationFiled: June 20, 2011Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: David Begleiter, Steven J. Weber
-
Publication number: 20120322611Abstract: A method to execute a shift in a powertrain including a plurality of torque generative devices rotatably connected through a first clutch includes operating the powertrain in a continuously variable operating range state, and monitoring a command to execute the shift including monitoring a target speed for a first torque generative device, and monitoring a command to disengage the first clutch. The first clutch is shifted from an engaged state to a disengaged state, including operating a torque phase of the first clutch wherein the first clutch is transitioned from the engaged state to the disengaged state, and simultaneous with the torque phase, operating an inertia speed phase of the first clutch wherein a speed of the first torque generative device is transitioned from an initial speed to the target speed.Type: ApplicationFiled: June 17, 2011Publication date: December 20, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Anthony H. Heap, Lawrence A. Kaminsky, Sean W. McGrogan, Lisa M. Talarico