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GM Global Technology Operations LLC Patents
Assignee:
GM Global Technology Operations LLC
Address:
Detroit, MI
No. of patents:
1883
Patents:












Patent Number Title Of Patent Date Issued
8087331 Method of machining a carrier assembly January 3, 2012
A method for machining a surface on a workpiece having a member extending perpendicularly to the surface includes determining a position of a tool, determining a position of the workpiece, positioning at least one of the workpiece and the tool to a predefined position, rotating the workp
8087287 Method for analyzing engine oil degradation January 3, 2012
The present disclosure provides a method for detecting degradation of an engine oil, by separation into a polar component and a non-polar component via admixture with a polar solvent having a polarity index greater than or equal to 5 and optionally a non-polar solvent having a polari
8087285 Apparatus and method for a seal immersion test with aerated fluid January 3, 2012
A test apparatus for testing fluid seals within an aerated fluid includes a container and a fluid located within the container. A plurality of seal coupons are submerged within the fluid in the container. An air supply is connected to the container to aerate the fluid within the containe
8087149 Self-piercing rivet and method of joining with bonded riveted joints January 3, 2012
A rivet configured to provide a strengthened rivet joint capable of acting as a load-bearing joint, such as in a vehicle, is provided. A method of joining a multiple member work-piece utilizing the rivet is also provided. The rivet includes a head portion and an annular body portion
8087146 Transmission clutch assembly fixture January 3, 2012
A fixture to align the inner splines of a plurality of clutch plates within a clutch housing assembly, the fixture including: a central body; a first fixed finger rigidly attached to a first fixed portion of the central body; and a first movable finger rigidly attached to a first mov
8086367 Vehicle lateral velocity and surface friction estimation using force tables December 27, 2011
A system and method for estimating vehicle lateral velocity and surface coefficient of friction using front and rear axle lateral force versus side-slip angle tables and sensor measurements. The sensor measurements include lateral acceleration, yaw-rate, longitudinal speed and steering
8084996 Method for battery capacity estimation December 27, 2011
An embodiment contemplates a method for estimating a capacity of a battery. A state of charge is determined at a first instant of time and at a second instant of time. A difference in the state of charge is determined between the first instant of time and the second instant of time.
8084164 Hybrid electrically conductive fluid distribution separator plate assembly for fuel cells December 27, 2011
In at least one embodiment, the present invention provides an electrically conductive fluid distribution separator plate assembly, a method of making, and a system for using, the electrically conductive fluid distribution separator plate assembly. In at least one embodiment, the elec
8083635 Gear and clutch arrangement for multi-speed transmission December 27, 2011
A transmission is provided having an input member, an output member, three 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.
8083633 8-speed hybrid transmission December 27, 2011
The hybrid transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The hybrid transmission includes a motor/generator, three planetary gear sets, five torque-transmitting devices, one fixed interco
8083632 Eight-speed transmission December 27, 2011
An eight speed transmission is provided having three planetary gear sets controlled by seven or optionally eight torque-transmitting mechanisms to provide eight forward speed ratios and a reverse speed ratio. The first planetary gear set is representable by a three-node first lever. The
8083628 Differential carrier assembly for a vehicle December 27, 2011
A differential carrier assembly for use in an axle of a vehicle includes a differential carrier that extends along a central axis. The differential carrier defines a chamber. A first stub shaft extends along a first rotational axis, transverse to the central axis. The first stub shaf
8083626 Highly configurable hybrid powertrain and control system therefor December 27, 2011
A hybrid powertrain system for a vehicle includes an engine and a transmission. The transmission includes a transmission input member, first and second electric machines, first and second planetary gear sets, and a plurality of selectively engageable torque transfer devices enabling
8083042 Selectable one-way clutch with symmetrical struts December 27, 2011
A selectable one-way clutch (SOWC) is provided for use with a vehicle transmission, and has a first race with a plurality of strut pockets, a moveable selector plate, symmetrical torque-holding elements or struts, and a second race that is rotatably engageable with a torque input dev
8083016 Vehicle with hybrid powertrain December 27, 2011
A hybrid vehicle is provided with an engine, as well as a transmission having a motor/generator, a stationary member, and a planetary gear set. The engine and the motor/generator are separately selectively connectable to one of the drive axle assemblies by engagement of different ones of
8082776 On-vehicle evaluation of oil formulation December 27, 2011
This invention is a method for determining the quality of lubrication oil added to a quantity of used oil in an operating engine or mechanism such as occurs during an oil change or when additional oil is added to maintain the vehicle manufacturer's specified total volume of oil. The
8082666 Method for producing automotive parts December 27, 2011
The invention relates to a method for producing a bodywork component of a motor vehicle that has first been shaped and is then thermally surface-treated, said method comprising iterative simulated steps with variable geometric data of tools that are used in the shaping process. Accor
8082140 Parametric analysis of real time response guarantees on interacting software components December 20, 2011
A system and method for providing control timing for a vehicle system at the design level. The method includes defining component timing specifications in a parametric form at a system level and at a sub-system level; mathematically representing the timing specifications in a system
8081210 Location of broadcast transmitters and mobile-adaptation using map-based navigation December 20, 2011
A system and method for mitigating the effects of Doppler shift, multipath and/or noise for a mobile receiver, such as on a vehicle, that is receiving broadcast television signals. The vehicle may include a map database and a GPS receiver that combine to identify the location of the
8079933 Method and apparatus to control engine torque to peak main pressure for a hybrid powertrain syst December 20, 2011
A method to control a powertrain including a transmission, an engine, and an electric machine includes monitoring a rotational speed of the engine, monitoring a temperature of a transmission fluid, determining a maximum hydraulic pressure within a hydraulic control system based upon the
8079932 Multi-speed transmission December 20, 2011
A transmission of the present invention has 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 first, second and third members. The torque transmitting devic
8079931 Eight speed automatic transmission December 20, 2011
An eight speed automatic transmission is provided having an input member, an output member, four planetary gear sets and five torque transmitting devices. Three of the planetary gear sets are simple and one planetary gear set is compound. Each of the plurality of planetary gear sets has
8079401 Method and apparatus for forming a casting December 20, 2011
A casting chamber configured to form a casting from molten material includes an outer mold, a plurality of inner core elements, and a surface portion of a thermal chill device. The thermal chill device includes first and second interchangeable elements with the surface portion of the
8078415 Method and apparatus to monitor state of health of electrical connections between battery and ge December 13, 2011
A system and method for monitoring the state of health of the connection between a generator and a battery includes detecting an interruption in power between the generator and the battery, incrementing a counter each time an interruption is detected, generating a trend of a number of
8078373 Vehicle dynamics prediction with lane/path information using a preview-correction-prediction app December 13, 2011
A method for predicting the dynamics of a vehicle using information about the path on which the vehicle is travelling that has particular application for enhancing active safety performance of the vehicle, to improve driver comfort and to improve vehicle dynamics control. The method
8078371 Method and apparatus to monitor output of an electro-mechanical transmission December 13, 2011
Controlling a hybrid powertrain includes monitoring an operator torque request, determining maximum and minimum allowable transmission output torques based upon the operator torque request, determining a commanded transmission output torque, and comparing the commanded transmission o
8078351 Estimation of surface lateral coefficient of friction December 13, 2011
A system and method for estimating surface coefficient of friction in a vehicle system. The method includes providing a kinematics relationship between vehicle yaw-rate, vehicle speed, vehicle steering angle and vehicle front and rear axle side-slip angles that is accurate for all su
8075441 Automatic transmission gear and clutch arrangement December 13, 2011
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 torq
8075239 Cargo handling device for vehicle December 13, 2011
A cargo handling device lifts a cargo to and from a cargo floor. A linear track mechanism is mounted on the cargo floor and has an extended position projecting through a vehicle opening. A cargo platform is mounted on the linear track mechanism so that the cargo platform moves betwee
8075173 Illuminated vehicle trim panel December 13, 2011
A trim panel for a vehicle interior provides a distinctive ambient lighting effect. The trim panel has an opening therein and an illuminated insert panel is mounted on the trim panel within the opening. The insert panel is molded of a clear plastic material and has a front face located
8075066 Metering check valve for active brake pads retraction system December 13, 2011
In an active brake pads retraction system, the improvement is a metering check valve which limits the retraction. The metering check valve is interfaced with an anti-lock brake system (ABS), disposed in the hydraulic brake line between the brakes apply system of the ABS and a caliper
8074614 Integrated hydraulic cooler and return rail in camless cylinder head December 13, 2011
An engine assembly may include a cylinder head defining an engine coolant reservoir, a pressurized fluid supply, a valve actuation assembly, and a hydraulic fluid reservoir. The valve actuation assembly may be in fluid communication with the pressurized fluid supply and may include a val
8073610 Method and apparatus to control warm-up of an exhaust aftertreatment system for a hybrid powertr December 6, 2011
An internal combustion engine is controlled to achieve a preferred temperature of the exhaust aftertreatment system and to minimize a total engine energy loss. A transmission is controlled to achieve a torque output based upon the preferred engine operation.
8073607 Method for populating motor vehicle yaw gain tables for use in an electronic stability control s December 6, 2011
An automated and algorithmic method utilizing motor vehicle steering geometry knowledge, applicable to small and large turn angles, along with knowledge of motor vehicle understeer gradient, for determining motor vehicle yaw gain by which a motor vehicle yaw gain table is populated for
8073605 Method of managing power flow in a vehicle December 6, 2011
A vehicle includes a powertrain system having a non-combustion tractive power generating device and a positioning system. A method of managing power flow in the vehicle includes determining a present location and a trajectory of the vehicle, and determining a probability of vehicle b
8073602 System constraints method of controlling operation of an electro-mechanical transmission with an December 6, 2011
A method for controlling an electro-mechanical transmission mechanically coupled to first and second electric machines to transmit power to an output member includes determining motor torque constraints and battery power constraints. A preferred output torque to an output member is d
8073601 Method for preferential selection of mode and gear and input speed based on multiple engine stat December 6, 2011
A method for controlling a hybrid powertrain system including an engine selectively operative in one of an all-cylinder state and a cylinder deactivation state based upon power costs includes determining engine power costs for each operating range state of the transmission, determini
8073597 Method and apparatus for predicting vehicle rollover during a trip-over event December 6, 2011
A vehicle includes wheels, force sensors adapted for a vertical force and lateral force of each wheel, an onboard device, and a controller. The controller calculates vehicle values using the vertical force and lateral force, compares the values to a corresponding threshold, and autom
8073594 Trailer articulation angle estimation December 6, 2011
A method for operating a vehicle includes acquiring position information including an azimuth angle between a non-contacting sensor and a wheeled axle of an attached trailer, determining a trailer tongue length correlated to the position information, determining a track width of the
8072686 UV laser beamlett on full-windshield head-up display December 6, 2011
An apparatus to project graphical images upon a substantially transparent windscreen head-up display of a vehicle includes an excitation light source projecting a laser beam based upon a graphical image command and a telescope for expanding the laser beam. The apparatus further includes
8072319 System and method for identifying a spare wheel December 6, 2011
A method is presented for identifying a first wheel on a vehicle, the vehicle including a wireless receiver. The method comprising receiving a plurality of wheel identifiers at the wireless receiver and selecting one of the plurality of wheel identifiers that corresponds to the first whe
8071064 XLI2MGHN hydrides as hydrogen storage compounds December 6, 2011
State-of-the-art electronic structure calculations yield results consistent with the observed compound SiLi.sub.2Mg and provide likelihood of the availability of IrLi.sub.2Mg and RhLi.sub.2Mg. Similar calculations provide likelihood of the availability of YLi.sub.2MgH.sub.n, ZrLi.sub
8070649 Hybrid powertrain and dual clutch transmission December 6, 2011
An automatic dual clutch transmission includes an input clutch which selectively connects a prime mover to an electric motor. The electric motor, in turn, is connected to the inputs of a pair of coaxial friction clutches. Each of the coaxial outputs of the friction clutches drives an
8070647 Method and apparatus for adapting engine operation in a hybrid powertrain system for active driv December 6, 2011
A powertrain includes an engine coupled to an input member of a hybrid transmission. The hybrid transmission is operative to transfer power between an input member and a plurality of torque machines and an output member. A method for controlling the powertrain includes, monitoring op
8070646 Multi-speed transmission December 6, 2011
A transmission of the present invention has 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 first, second and third members. The torque transmitting devic
8070645 Multi-speed transmission December 6, 2011
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. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include
8070644 Gear and clutch arrangement for multi-speed transmission December 6, 2011
A transmission is provided having an input member, an output member, three 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.
8070643 Gear and clutch arrangement for multi-speed transmission December 6, 2011
A transmission is provided having an input member, an output member, three 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.
8070642 Gear and clutch arrangement for multi-speed transmission December 6, 2011
A transmission is disclosed having an input member, an output member, three 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
8070638 Dual input planetary final drive December 6, 2011
The present invention provides a final drive assembly having a differential driven by a planetary gear set having two inputs. The ring gear of the planetary gear set is stationary. One of the inputs is coupled to and drives the planet gear carrier which, in turn, is coupled to and dr

 
 
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