Patents Represented by Attorney Kathryn A. Marra
  • Patent number: 6959475
    Abstract: Various vehicle body business processes are described which capitalize upon the interchangeability of vehicle bodies on a flat rolling chassis. The ability to interchange vehicle bodies and exchange modular interior components enables substantial freedom and variation in the types of automobile, trucks, heavy equipment, machinery, RV bodies, etc. that can be interchanged on a rolling chassis. Various seating arrangements may be provided as well as enhanced space utilization, and different types of interior and exterior environments, aesthetics and functionality, including sound, lighting, and other technology enhancements may be provided on a body. Methods and structures are described for facilitating the exchange of modular body components, such as via a removable body floor.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: November 1, 2005
    Assignee: General Motors Corporation
    Inventors: Adrian B. Chernoff, Tommy E. White, Christopher E. Borroni-Bird, Mohsen D. Shabana, Robert Louis Vitale
  • Patent number: 6958587
    Abstract: A vehicle has multiple electrical propulsion systems. Torque is split among the various propulsion systems to meet a variety of requirements and limitations including operator demand, vehicular traction limits, electric machine torque capabilities, machine efficiency operating points and available electrical power.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: October 25, 2005
    Assignee: General Motors Corporation
    Inventor: Sanjeev M. Naik
  • Patent number: 6957528
    Abstract: The reduction of NOx in diesel engine exhaust gas, typically at about 200° C. to 400° C., is accomplished using a dual bed NaY—CuY zeolite reduction catalyst. The effectiveness of the catalyst in reducing the nitrogen oxides is markedly increased by the separate and sequential additions of plasma reformed diesel fuel and ozone to the exhaust before it contacts the powdered catalyst. Reformed diesel fuel is obtained by withdrawing fuel from on-board storage, heating the withdrawn volume and stripping a more volatile fraction with air and passing the air/volatile diesel fuel fraction through a non-thermal plasma reactor. Ozone is obtained by blowing ambient air through a second non-thermal plasma reactor.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: October 25, 2005
    Assignee: General Motors Corporation
    Inventor: Byong Kwon Cho
  • Patent number: 6956007
    Abstract: The present invention provides a method of making a noble metal catalyst, where the noble metal is distributed on the surface of special composite carrier particles. Nanometer sized oxide particles are first dry coated by an impact mixing process on the surface of larger alumina particles. In general, this dry coating process coats the nanometer sized particles on the surface of the alumina particles. A suitable solution of noble metal(s) compound is then soaked on the surface of the composite carrier particles. Ultimately, the noble metal compound is decomposed by calcining and noble metal particles dispersed with large effective surface area on the composite carrier particles. The resultant catalyst structure improves catalyst performance while making efficient and effective use of the expensive noble metal.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: October 18, 2005
    Assignee: General Motors Corporation
    Inventors: Mei Cai, Lee Lizhong Feng, Martin S. Ruthkosky, Jerry Dale Rogers
  • Patent number: 6956468
    Abstract: The invention describes a sensor mechanism for measuring hitch articulation angle. A configuration of the contact face between hitch ball and receiver eliminates the effect of the unwanted trailer motions, such as roll and pitch while accurately registering trailer yaw motion. Also, there is no yaw slippage at the contact that was a major problem during the successive acceleration and brake maneuvers. With the freely rotating ball and shaft, the angle is measured using an angle sensor, such as an optical encoder, potentiometer, or other means. For the case of a relative angle sensor, automatic zero angle calibration can be used to allow an absolute angle measurement.
    Type: Grant
    Filed: May 9, 2003
    Date of Patent: October 18, 2005
    Assignee: General Motors Corporation
    Inventors: Yong H. Lee, Weiwen Deng, Willard A. Hall, Thomas R. Brown, Joseph J. Gies, III
  • Patent number: 6949048
    Abstract: 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 three fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The seven torque-transmitting mechanisms provide interconnections between various gear members, the input shaft, the output shaft, and the transmission housing, and are operated in combinations of two to establish at least eight forward speed ratios and at least one reverse speed ratio.
    Type: Grant
    Filed: February 10, 2004
    Date of Patent: September 27, 2005
    Assignee: General Motors Corporation
    Inventors: Norman K. Bucknor, Patrick B. Usoro, Madhusudan Raghavan
  • Patent number: 6948226
    Abstract: A method of assembling a vehicle chassis includes providing a vehicle frame having a plurality of packaging cavities opening in a plurality of different directions, mounting vehicle hardware components toward openings in the packaging cavities and installing the vehicle hardware components into operative positions in their packaging cavities. The installation of the vehicle hardware components and their respective packaging cavities may be arranged to make the components removable from the frame in respective ones of the different directions.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: September 27, 2005
    Assignee: General Motors Corporation
    Inventors: Adrian B. Chernoff, Tommy E. White
  • Patent number: 6945204
    Abstract: A valve actuator assembly for an engine includes a movable engine valve. The valve actuator assembly also includes a movable finger for contact with the engine valve and a rotatable cam for contact with the finger. The valve actuator assembly further includes a finger-support element assembly for contact with the finger having a first piston and a second piston. The first piston and second piston are axially aligned and independently movable in the same direction to provide lift of the engine valve in an activated mode and lost motion of the engine valve in a de-activated mode. In the activated mode, one end of the second piston is the stationary pivot for the finger, and the other end contacts the first piston. The first piston rests on a fluid column. In the de-activated mode, fluid is exhausted hydraulically, yielding lost motion, and the two pistons are displaced away from each other by their biasing springs. The first piston remains stationary, and the second piston undergoes a reciprocating motion.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: September 20, 2005
    Assignee: General Motors Corporation
    Inventors: Burak A. Gecim, William R. Kuziak Jr.
  • Patent number: 6945900
    Abstract: 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 two fixed interconnecting members. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The seven torque-transmitting mechanisms provide interconnections between various gear members, the fixed interconnections, the input shaft, the output shaft, and the transmission housing, and are operated in combinations of two to establish at least eight forward speed ratios and at least one reverse speed ratio.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: September 20, 2005
    Assignee: General Motors Corporation
    Inventors: Patrick B. Usoro, Madhusudan Raghavan, Norman K. Bucknor
  • Patent number: 6945238
    Abstract: An air intake system for an internal combustion engine includes a conduit defining a passageway that conveys air to a manifold. An EGR inlet in the conduit enables EGR to mix with the air. A plate is sufficiently positioned in the passageway such that air in the passageway is divided into two streams. One of the streams flows on one side of the plate and the other stream flows on the other side of the plate. The plate is sufficiently positioned with respect to the EGR inlet such that at least some of the EGR, and preferably the greater part of the EGR entering the passageway, is diverted to flow on only one side of the plate. The plate deflects at least some of the EGR such that it has more time and space in which to mix with the air before being ingested in an engine cylinder. The plate thus enables more consistent EGR distribution among engine cylinders, resulting in better emissions and fuel economy compared to the prior art.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: September 20, 2005
    Assignee: General Motors Corporation
    Inventor: Mark Steven Huebler
  • Patent number: 6945214
    Abstract: A modular engine assembly includes a cylinder bore block, a cylinder head disposed above the cylinder bore block, and a crankcase assembly disposed below the cylinder bore block. The crankcase assembly includes an upper carrier and a lower carrier each having a plurality of bearing portions therein being integral, unitary, and one-piece.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: September 20, 2005
    Assignee: General Motors Corporation
    Inventors: Anil K. Sachdev, Brian D. Kaminski, Alexander Millerman, Gary L. Jones, William H. Haverdink
  • Patent number: 6947855
    Abstract: A method for determining a state of charge (SOC) of a super-capacitor (SC) system includes modeling the SC system with an equivalent circuit having first and second parameters. The method further includes estimating a value of the first and second parameters based on a measured voltage and determining the SOC based on the first and second parameters.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: September 20, 2005
    Assignee: General Motors Corporation
    Inventors: Mark W. Verbrugge, Damon R. Frisch
  • Patent number: 6944920
    Abstract: A releasable fastening system comprises a loop portion comprising a loop material, a hook portion comprising a plurality of hook elements, and an actuation device disposed in electrical communication with the loop portion and the hook portion. The actuation device is operable to provide electrostatic charges to the loop material and the hook elements.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: September 20, 2005
    Assignee: General Motors Corporation
    Inventors: Alan Lampe Browne, Nancy L. Johnson, Chandra Sekhar Namuduri
  • Patent number: 6938712
    Abstract: A vehicle chassis having substantially all of the mechanical, electrical, and structural componentry necessary for a fully functional vehicle includes at least an energy conversion system, a steering system, and a braking system. The chassis is configured for matability with a variety of different types or styles of vehicle bodies. Various prior art mechanical control linkages between a driver and controlled systems are replaced with non-mechanical control signal transmission components. Fuel cell technology is also implemented. The chassis may also include an electrical connector operably connected to the fuel cell and configured to transmit electrical energy from the fuel cell to an offboard system that consumes electrical energy. Chassis may be stacked and/or have interconnected fuel cells to increase electrical energy output.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: September 6, 2005
    Assignee: General Motors Corporation
    Inventors: Adrian B. Chernoff, Christopher E. Borroni-Bird, Mohsen D. Shabana, Robert Louis Vitale
  • Patent number: 6938585
    Abstract: Method and apparatus for automatically replenishing additives lost from the lubricating oil of an IC engine, by injecting controlled quantities of the additive into the oil. The amount and frequency of injection is controlled by either the operating conditions of the oil (e.g. its thermal history), or changes the properties of the oil (e.g. its electrochemical activity, or dielectric constant).
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: September 6, 2005
    Assignee: General Motors Corporation
    Inventor: Eric West Schneider
  • Patent number: 6938412
    Abstract: An apparatus and a method for removing NOx from an exhaust stream of a lean-burn engine during an engine cold start are provided. The apparatus includes a close-coupled LNT coupled to a main LNT by a hollow conduit. NOx from the cold exhaust is initially stored on the close-coupled LNT. As the engine exhaust warms up, the close-coupled LNT reaches its operating temperature and reduces the stored NOx to N2. When the temperature of the close-coupled LNT reaches approximately 350° C., NOx is released from the close-coupled LNT, is absorbed on the main LNT, and is converted to N2 during fuel-rich conditions, The close-coupled LNT can be regenerated after the engine is turned off by providing heat. The released NOx during the regeneration of the closed-coupled LNT is absorbed by the main LNT. The stored NOx on the main LNT can be reduced to N2 during the next vehicle operation.
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: September 6, 2005
    Assignee: General Motors Corporation
    Inventors: Wei Li, David R. Monroe
  • Patent number: 6935658
    Abstract: A structural frame for a vehicle chassis includes transversely-oriented unitary structural members interconnecting at least three longitudinally-oriented elongated members. The use of unitary structural members and elongated members provides flexibility in assembling structural frames of differing configurations. Correspondingly, a method of assembling structural frames having transversely-oriented unitary structural members interconnecting at least three longitudinally-oriented elongated members is provided.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: August 30, 2005
    Assignee: General Motors Corporation
    Inventors: Adrian B. Chernoff, Tommy E. White
  • Patent number: 6937927
    Abstract: A human vehicle interface for vehicle secondary controls includes a housing, an actuator grounded to the housing and having at least one degree of freedom, a follower coupled to the actuator and having a degree of freedom in the z direction, and a reaction plate having a first spatial relationship with the follower and defining a position path for the follower, wherein the actuator is responsive to the reaction plate at the first spatial relationship. The actuator includes a body and a control knob.
    Type: Grant
    Filed: November 25, 2002
    Date of Patent: August 30, 2005
    Assignee: General Motors Corporation
    Inventors: Charles W. Wampler, II, David R. Warn, Donn W. Glander, Donald J. McMillan
  • Patent number: 6936562
    Abstract: Certain metal-exchanged SUZ-4 zeolites have been prepared that have catalytic activity for the reduction of NOx in the exhaust of a hydrocarbon or alcohol fueled engine operated under fuel lean conditions. Initially the SUZ-4 zeolite contains alkali metal cations such as Li+, Na+, K+ and/or Cs+. These alkali metal cation-containing zeolites are partially exchanged with at least one of copper (II), silver (I), iron (III) or cobalt (II) ions. The resulting partially exchanged SUZ-4 zeolites display such activity and are stable under extreme hydrothermal aging conditions.
    Type: Grant
    Filed: September 4, 2003
    Date of Patent: August 30, 2005
    Assignee: General Motors Corporation
    Inventors: Byong Kwon Cho, Richard J. Blint, Ayyappan Subbiah
  • Patent number: 6935449
    Abstract: An electrical distribution system for a vehicle having electrical devices includes at least one junction box and a plurality of terminals interconnected by at least one conductive path. The electrical distribution system operatively interconnects the electrical devices when the electrical devices are appropriately connected to the electrical distribution system via the terminals. A method for advantageously using an electrical distribution system having sufficient terminals and sufficient conductive paths to accommodate a plurality of vehicle electrical device combinations is also provided.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: August 30, 2005
    Assignee: General Motors Corporation
    Inventors: Adrian B. Chernoff, Tommy E. White