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General Motors Corporation Patents
Assignee:
General Motors Corporation
Address:
Detroit, MI
No. of patents:
10630
Patents:


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Patent Number Title Of Patent Date Issued
7198587 Transmission with selectable braking one-way clutch April 3, 2007
A multi-speed transmission is provided with a selectable (reversible) braking one-way clutch operative to brake rotation of a member of a planetary gear set of the transmission when the transmission is in reverse and first speed. First and second rotating input clutches are slipped w
7197807 Castellated snap ring retention system and method April 3, 2007
The present invention provides a system and method for releasably retaining at least one coil spring. The present invention utilizes a circumferential castellation formed within a housing operable to receive within the notches formed by the castellation a complimentary number of fing
7197364 Portable electronic controller March 27, 2007
A portable electronic device includes a communication component, an integral display operatively connected to the communication component, an operator input component operatively connected to the display and a processing component operatively connected to the communication component,
7197290 Method for AM band interference suppression via frequency shift March 27, 2007
Methods are provided for suppressing interference in a motor vehicle radio such as an AM radio from the operating frequency or the harmonics of the operating frequency of a source of time varying signal such as a switching power supply in response to tuning the radio to a selected fr
7195836 Polymeric separator plates March 27, 2007
A separator plate in an electrochemical cell and method for making the same includes a body with an electrically conductive first section having fluid flow fields with a plurality of flow channels formed therein. A second section is provided adjacent to the first section that has a h
7195817 Diamond coated article and method of its production March 27, 2007
A diamond coated cutting tool is disclosed having a either steel or cemented carbide substrate. The interior layer disposed between the diamond coating and the substrate inhibits the diffusion of carbon and other species.
7195575 Splined sun gear and method for compact electro-mechanical transmission March 27, 2007
This invention relates to a sun gear member and sun gear shaft providing improved manufacturing time and material cost savings. This invention further relates to the packaging of a compact electro-mechanical transmission specifically as it pertains to the redesign of the planetary ge
7195095 Floating PRNDL face plate assembly and method to accommodate floor build variations March 27, 2007
A shifter face plate assembly and method for an automatic transmission having a shifter rod in an opening of a floor console which includes an intermediary plate and top face plate. The intermediary plate supports the top plate and floats horizontally laterally to obtain the proper s
7194372 Method and system for verifying an embedded module of a mobile vehicle March 20, 2007
A method and system for verifying an embedded module of a mobile vehicle. The method includes the steps of providing a validation test plan including a plurality of test keywords indexed to a requirement in a spread sheet format, receiving a validation test plan request including at
7194073 Method for automatically replenishing pre-paid calling units within a telematic unit March 20, 2007
In a system including a telematics unit and a data center, a method for automatically replenishing pre-paid calling units within the telematics is based on an occurrence of a trigger event as detected by the telematics units. Upon being notified of the trigger event, the data center
7193178 Method and apparatus for controlling the heating of an oxygen sensor in a motor vehicle March 20, 2007
Methods and apparatus are provided for controlling the heating of an oxygen sensor in a motor vehicle. The apparatus comprises an oxygen sensor for measuring oxygen levels in exhaust gases of a motor vehicle. The oxygen sensor comprising a heater rod, an outer electrode surrounding t
7193177 Method of metallurgically bonding articles and article therefor March 20, 2007
An article suitable for arc-welded metallurgical bonding having a first part having a lower surface, and a second part having an upper surface is disclosed. The lower surface of the first part is disposed at the upper surface of the second part to provide for a faying surface thereat. Th
7192668 Fuel cell stack and method of operating a fuel cell system with such a fuel cell stack March 20, 2007
A fuel cell stack comprising a plurality of fuel cells which are connected together. Each cell has an anode, a cathode, and a membrane therebetween and which are each arranged between two bipolar plates. The anode sides of the individual fuel cells have flow fields for a gaseous fuel sup
7192378 Planetary transmissions having three interconnecting members and clutched input members March 20, 2007
The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least eight forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having seven torque-transmitting mechanisms and thr
7192373 Electrically variable transmission having two planetary gear sets with one fixed interconnection March 20, 2007
The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first and second differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, and
7192053 Automotive vehicle air bag system March 20, 2007
A vehicle air bag assembly including an inflatable air bag cushion and at least one tether having a first portion is provided. The first portion includes a first loop supported at a first location at the cushion. The tether is releasably restrained such that the cushion inflates to a fir
7190946 In-vehicle clock synchronization with local time March 13, 2007
The present invention is a system and method for providing local time to a mobile vehicle. A time information message is received at an in-vehicle telematics unit, which monitors for a time-update trigger event. A time-update message is sent from the telematics unit to a vehicle bus in
7189182 Transmission clutch control system March 13, 2007
A power transmission includes a rotary input member adapted to receive drive torque from a source of torque, a rotary output member and a torque transmitting mechanism selectively operable to transfer drive torque between the input member and the output member. The torque transmitting
7188896 Headphone structure and storage therefor March 13, 2007
Headphone storage concepts provided include (i) a headrest forming a compartment configured for storage of an item within the compartment; (ii) a headrest cooperatively configured for receiving headphones such that the headphones are removably secured to the headrest; (iii) a headres
7186476 One piece bipolar plate with spring seals March 6, 2007
A PEM fuel cell includes a cathode plate for directing a first fluid along a surface thereof. An anode plate directs a second fluid along a surface thereof. An MEA is oriented in a first direction. The MEA includes an anode face opposing the anode plate and a cathode face opposing the
7185945 Structural assembly for vehicles March 6, 2007
A structural assembly for a vehicle includes a structural member extending longitudinally. The structural assembly also includes an insert disposed within and extending longitudinally along at least a portion of the structural member and having at least one corrugation to act as a crush
7185628 Continuous engine reverse rotation detection system March 6, 2007
A reverse rotation detection system for an engine with at least one camshaft and a crankshaft includes a camshaft position sensor that generates a camshaft position signal based on a rotation of the camshaft. A second sensor input device generates a crankshaft position signal based o
7181986 Quality control methods for gas diffusion media February 27, 2007
The present invention discloses various methods in which a quality of a diffusion media for use in a fuel cell assembly can be qualitatively evaluated. The material constant, an internal contact angle, a ratio of high and low energy pores, and an external contact angle can be calcula
7181908 Torque compensation method for controlling a direct-injection engine during regeneration of a le February 27, 2007
A torque compensation method for controlling a direct-injection gasoline engine during regeneration of a lean NOx trap disposed in an exhaust path of the engine determines a desired torque in accordance with driver demands, cruise control settings or idle control. An estimate of torque
7181902 Coordinated engine control for lean NOx trap regeneration February 27, 2007
A method for controlling a direct-injection gasoline engine during regeneration of a lean NOx trap disposed in an exhaust path of the engine includes determining the current air-fuel ratio and comparing the current air-fuel ratio to a lean limit air-fuel ratio. Transitions from lean
7181334 Method and apparatus to diagnose intake airflow February 20, 2007
An engine control system including an engine controller, a plurality of sensors coupled to the engine controller, and a neural network operating in the engine controller, and where upon failure of at least one of the plurality sensors, the neural network generates a representative value
7181326 Active front steer control for vehicle stability enhancement February 20, 2007
An AFS control system that combines and weights yaw rate feedback and side-slip rate feedback to provide increased vehicle stability enhancement control. The AFS system includes a yaw rate sub-system that generates a desired yaw rate signal. The AFS system also includes a side-slip r
7179553 Method for detecting electrical defects in membrane electrode assemblies February 20, 2007
A method and system for detecting imperfections in a membrane electrode assembly of an electrochemical fuel cell, and more particularly for detecting defects within a proton exchange membrane in a membrane electrode assembly which is optionally sandwiched between conductive diffusion
7179186 Electrically variable transmission having three interconnected planetary gear sets February 20, 2007
The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first, second and third differential gear sets, a battery, two electric machines serving interchangeably as motors or generato
7179185 Electrically variable transmission having three interconnected planetary gear sets, two clutches February 20, 2007
The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first, second and third differential gear sets, a battery, two electric machines serving interchangeably as motors or generato
7178859 Method for controlling airflow February 20, 2007
An airflow control device comprises a body and an active material in operative communication with the body. The active material, such as shape memory material, is operative to change at least one attribute in response to an activation signal. The active material can change its shape,
7178425 Transmission axle seal cover, lubrication dam and rock guard February 20, 2007
A cover for an aperture defined by an axle seal on a transmission includes a guard plate and a shield coupled to the axle seal. The shield includes a first portion and a detachable second portion. The shield encloses an aperture in the guard plate when the second portion is attached to t
7178395 Control logic for fluid flow control devices February 20, 2007
A system for controlling fluid flow about a vehicle. The system comprises a fluid flow control device, an obstacle sensor for detecting obstacles, and a controller. The fluid flow control device has a body with at least one surface and an actuation means in operative communication with t
7178328 System for controlling the urea supply to SCR catalysts February 20, 2007
A reductant dosing control system, for use in a Selective Catalytic Reduction (SCR) system of a motor vehicle includes an input receiving a NOx feedback signal from an NOx sensor provided to the SCR system. A base dosing module calculates a required quantity of reductant to inject in
7177634 Method of voice access for vehicle services February 13, 2007
One aspect of the invention presents a method of providing vehicle services to a mobile vehicle. An access request is received at a call center. The access request is authenticated. An automated voice menu of vehicle services is presented to a subscriber. A subscriber selection input
7176385 EMI protection and fuel cell systems employing the same February 13, 2007
A scheme is provided for reducing the degree to which EMI from high voltage components of a fuel cell system or a fuel cell powered vehicle is induced in low voltage components of the system or vehicle. In accordance with one embodiment of the present invention, the electrical compon
7175561 Planetary transmissions having two non-continuously interconnected gear members February 13, 2007
The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least eight forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having seven torque-transmitting mechanisms and thr
7175204 Method of hydroforming articles and the articles formed thereby February 13, 2007
A hydroformable frame element is formed from the combination of at least two elements. The at least two elements are designed with a partially overlapping region, with an annular space defined within the overlapping region. The annular space is filled with adhesive, which is then cured t
7174253 Receiving traffic update information and reroute information in a mobile vehicle February 6, 2007
The present invention provides a method for receiving traffic update information and reroute information from a telematics service call center in a mobile vehicle. The mobile vehicle monitors a satellite broadcast signal for the traffic update information. The traffic update information
7172638 Staged air autothermal reformer for improved startup and operation February 6, 2007
An autothermal reformer according to the principles of the present invention comprises a first stage that selectively receives a fuel flow, a first oxidant flow, and a steam flow. The first stage has a first portion of a catalyst bed. The fluids within the first stage are routed thro
7172525 Electrically variable transmission having a mechanical reverse mode February 6, 2007
An electrically variable transmission having two planetary gear sets, two motor/generators, and six torque transfer devices to provide input split, compound split, output split, neutral, electric reverse and mechanical reverse modes of operation. The electrically variable transmission
7172061 Self-adjusting clutches for automotive vehicles February 6, 2007
Self-adjusting clutches for automotive vehicles include a hydraulic cylinder as part of a clutch linkage connecting a clutch foot pedal to a clutch plate biased by a clutch spring to urge a friction disk into engagement with a flywheel of an engine. The hydraulic cylinder has a housi
7171226 Communication retry method over digital wireless systems January 30, 2007
The invention provides a method of reestablishing wireless communications for a mobile vehicle. After a communication link failure on a first communication link is detected, it is determined whether to reconnect on the first communication link based on at least one communication cond
7169491 Flexible system for hydrogen recirculation January 30, 2007
A fuel cell system that routes anode effluent from one fuel cell stack to the anode side of another fuel cell stack to consume unused hydrogen in the production of electricity is disclosed. The routing of the anode effluent from one fuel cell stack to another is accomplished by providing
7169074 Electrically variable transmission having two planetary gear sets with one stationary member January 30, 2007
The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first and second differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, and
7169073 Powertrain with electrically variable transmission January 30, 2007
A hybrid powertrain incorporates an engine, two motor/generator units and three planetary gearsets along with three torque-transmitting mechanisms to provide a two-mode compound-split electrically variable transmission.
7168738 Child restraint seat detection devices January 30, 2007
The presence of a child restraint seat on a vehicle seat is detected by movement of a pair of anchors from a first position to a second position when the child restraint seat is coupled with straps to the anchors. The anchors are pivotally or deflectively mounted on a cross bar which
7168541 Manual planetary transmission with synchronizer clutches and brakes January 30, 2007
A manual planetary power transmission includes two planetary gearsets and three torque-transmitting synchronizer assemblies. Two of the synchronizer assemblies permit the control of one gear member of the planetary gearsets individually. The third synchronizer permits control of two
7167084 Temporary key invalidation for electronic key and locking system January 23, 2007
Methods and apparatus are provided for rendering electronic keys left behind in a vehicle temporarily inactive. The apparatus comprises a vehicle security control module in wireless communication with the electronic keys, and having operatively coupled together a receiver, a processo
7166205 Method for producing hard surface, colored, anodized aluminum parts January 23, 2007
The present invention uses a two-step anodizing process to produce a colored anodized coating on the surface of an aluminum part. In accordance with this invention, a thin hard anodized coating layer is first formed on the surface of the aluminum part and then growing a softer a clea
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