Patents by Inventor Venkata Prasad Atluri

Venkata Prasad Atluri has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20160257190
    Abstract: A powertrain includes a motor-generator and an auxiliary electric system. The powertrain also includes a first energy storage device disposed in a parallel electrical relationship with a motor-generator and an auxiliary electric system. Additionally, the powertrain includes a first switching device selectively transitionable between a first open state to electrically disconnect the first energy storage device from at least one of the motor-generator and the auxiliary electric system, and a first closed state to electrically connect the first energy storage device to at least one of the motor-generator and the auxiliary electric system. The motor-generator and the auxiliary electric system are operable regardless of the first switching device being in the first open and closed states.
    Type: Application
    Filed: May 16, 2016
    Publication date: September 8, 2016
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan G. Holmes, Venkata Prasad Atluri, Chandra S. Namuduri, Robert S. Conell, Michael G. Reynolds, Thomas Wolfgang Nehl, Bob R. Powell, Madhusudan Raghavan
  • Publication number: 20160207413
    Abstract: A network includes vehicle(s) having a battery pack and vehicle telematics unit (VTU), and a server. A server in communication with the VTUs and remote client device(s) is programmed to receive vehicle information from the VTU, including an energy throughput value defined by charging power delivered to the battery pack during an active charging event. The server receives utility information and a load adjustment request from the remote client device, including a power interrupt permission status describing whether interruption of power by a host of the client device is permitted. Charging control signals are transmitted in response to the load adjustment request to enable or postpone the charging event. Energy throughput is recorded over multiple active charging events, which are then combined or aggregated. Output data, e.g., a bill or report describing the aggregated energy throughput values, may be generated by the server. A method and server are also disclosed.
    Type: Application
    Filed: January 15, 2015
    Publication date: July 21, 2016
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Venkata Prasad Atluri, Ian J. Sutherland, Russ Eling, Alexander D. Keros
  • Publication number: 20160185225
    Abstract: A powertrain includes a first switching device transitionable between an open state disconnecting a first energy storage device from one of a motor-generator and an auxiliary electric system, and a closed state connecting the first energy storage device to one of the motor-generator and the auxiliary electric system. A second switching device is transitionable between an open state disconnecting a second energy storage device from one of the motor-generator and the auxiliary electric system, and a closed state connecting the second energy storage device to one of the motor-generator and the auxiliary electric system. A third switching device is transitionable between an open state disconnecting the auxiliary electric system from one of the motor-generator, and the first and second energy storage devices, and a closed state connecting the auxiliary electric system to one of the motor-generator, and the first and second energy storage devices.
    Type: Application
    Filed: December 30, 2014
    Publication date: June 30, 2016
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Chandra S. Namuduri, Venkata Prasad Atluri, Suresh Gopalakrishnan
  • Publication number: 20160185335
    Abstract: A powertrain includes an engine with a crankshaft rotating on a first axis, motor/generator unit (MGU), belted drive system, transmission, actuator assembly, and controller. An MGU rotor shaft rotates about a second axis. The belted drive assembly has a first pulley connected to the crankshaft, a second pulley selectively connected to the rotor shaft, and an endless rotatable drive element that connects the pulleys. The transmission is connected to the flywheel via an input clutch. The actuator assembly has a third axis parallel to the first and second axes, a linear actuator(s), pinion gears translatable along the third axis to selectively engage the first and second gear elements, and overrunning clutches to passively disengage the pinion gears from the first or second gear element. The controller transmits control signals to the MGU and linear actuators to command a control state via translation of the pinion gears.
    Type: Application
    Filed: December 30, 2014
    Publication date: June 30, 2016
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Chandra S. Namuduri, Alexandru Rajala, Alan G. Holmes, Thomas Wolfgang Nehl, Venkata Prasad Atluri, Madhusudan Raghavan
  • Patent number: 9370992
    Abstract: A powertrain for a vehicle is disclosed. The powertrain includes an engine, a motor-generator and a starter mechanism. The powertrain also includes a first energy storage device disposed in a parallel electrical relationship with a motor-generator and an auxiliary electric system. Additionally, the powertrain includes a first switching device selectively transitionable between a first open state to electrically disconnect the first energy storage device from at least one of the motor-generator and the auxiliary electric system, and a first closed state to electrically connect the first energy storage device to at least one of the motor-generator and the auxiliary electric system. Electrical communication between the motor-generator and the auxiliary electric system is independent of the first switching device being in the first open and closed states.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: June 21, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan G. Holmes, Venkata Prasad Atluri, Chandra S. Namuduri, Robert S. Conell, Michael G. Reynolds, Thomas Wolfgang Nehl, Bob R. Powell, Madhusudan Raghavan
  • Publication number: 20160167499
    Abstract: A powertrain for a vehicle includes an engine and a method of assembling the powertrain includes providing the engine. A starter mechanism is selectively operable to start the engine. A motor-generator includes an adapter to dispose the motor-generator and the starter mechanism in alternative assembly configurations being a first assembly configuration and a second assembly configuration. The first assembly configuration is when the starter mechanism is coupleable to the adapter to selectively transfer torque from the motor-generator through the adapter and the starter mechanism to start the engine. The second assembly configuration is when the starter mechanism is spaced from the adapter to operate independently of the motor-generator such that the starter mechanism selectively transfers torque to start the engine.
    Type: Application
    Filed: February 23, 2016
    Publication date: June 16, 2016
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan G. Holmes, Alexandru Rajala, Chandra S. Namuduri, Venkata Prasad Atluri
  • Publication number: 20160129936
    Abstract: A method of controlling steering of a vehicle through setting wheel angles of a plurality of modular electronic corner assemblies (eModules) is provided. The method includes receiving a driving mode selected from a mode selection menu. A position of a steering input device is determined in a master controller. A velocity of the vehicle is determined, in the master controller, when the determined position of the steering input device is near center. A drive mode request corresponding to the selected driving mode to the plurality of steering controllers is transmitted to the master controller. A required steering angle of each of the plurality of eModules is determined, in the master controller, as a function of the determined position of the steering input device, the determined velocity of the vehicle, and the selected first driving mode. The eModules are set to the respective determined steering angles.
    Type: Application
    Filed: January 18, 2016
    Publication date: May 12, 2016
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS LLC, The U.S.A. As Represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Andrew D. Dawson, William J. Bluethmann, Chunhao J. Lee, Robert L. Vitale, Raymond Guo, Venkata Prasad Atluri
  • Patent number: 9302575
    Abstract: A powertrain for a vehicle and a method of assembling the powertrain are disclosed. An engine includes a crankshaft being rotatable about a longitudinal axis. A ring gear is attached to a first distal end of the crankshaft such that the ring gear and the crankshaft are rotatable in unison about the longitudinal axis. A starter mechanism is selectively operable to rotate the ring gear and the crankshaft to start the engine. A motor-generator includes an adapter selectively cooperating with the starter mechanism to dispose the motor-generator and the starter mechanism in alternative assembly configurations being a first assembly configuration and a second assembly configuration. The first assembly configuration is when the starter mechanism is coupleable to the adapter and the second assembly configuration is when the starter mechanism is spaced from the adapter to operate independently of the motor-generator.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: April 5, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Alan G. Holmes, Alexandru Rajala, Chandra S. Namuduri, Venkata Prasad Atluri
  • Patent number: 9254866
    Abstract: A method of controlling steering of a vehicle through setting wheel angles of a plurality of modular electronic corner assemblies (eModules) is provided. The method includes receiving a driving mode selected from a mode selection menu. A position of a steering input device is determined in a master controller. A velocity of the vehicle is determined, in the master controller, when the determined position of the steering input device is near center. A drive mode request corresponding to the selected driving mode to the plurality of steering controllers is transmitted to the master controller. A required steering angle of each of the plurality of eModules is determined, in the master controller, as a function of the determined position of the steering input device, the determined velocity of the vehicle, and the selected first driving mode. The eModules are set to the respective determined steering angles.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: February 9, 2016
    Assignees: GM Global Technology Operations LLC, The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Andrew D. Dawson, William J. Bluethmann, Chunhao J. Lee, Robert L. Vitale, Raymond Guo, Venkata Prasad Atluri
  • Patent number: 9169763
    Abstract: A system and method for providing energy to auto systems such as systems after-treating exhaust. Energy may be received from a solar energy source electrically connected to an after-treatment system. At least some of the energy from the solar energy source may be provided to the after-treatment system to purify exhaust from an engine. A control module may provide at least some of the energy from the solar energy source to a heater, for example, to initiate heating the after-treatment system prior to starting the engine. The heater may heat the after-treatment to temperatures within a predetermined temperature range associated with optimal efficiency for the after-treatment system.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: October 27, 2015
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Venkata Prasad Atluri, Kushal Narayanaswamy, Paul M. Najt, Yongsheng He, Madhusudan Raghavan
  • Patent number: 9156359
    Abstract: The present disclosure relates to an automobile electrical system including a solar subsystem. Components collect and store solar energy in an advanced energy storage subsystem including a base portion and, in some embodiments, a solar-energy buffer. The components use the solar energy selectively to meet vehicle loads, including selectively using one or more of: energy obtained directly from the solar subsystem; energy from the advanced energy storage system; and energy from a high-voltage energy converter such as an alternator or accessory power module.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: October 13, 2015
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Venkata Prasad Atluri, Michael Gerard Rubbo, Larry D. Laws
  • Publication number: 20150260145
    Abstract: A powertrain and an electromechanical apparatus are disclosed. A ring gear is attached to a first distal end of a crankshaft such that the ring gear and the crankshaft are rotatable in unison about a longitudinal axis. A motor-generator includes a motor/generator shaft being rotatable about a first axis spaced from the longitudinal axis. A starter mechanism includes a first starter gear coupleable to the motor/generator shaft and rotatable about a second axis spaced from the longitudinal axis. The first starter gear is movable along the second axis between a first position engaging the ring gear such that torque is transferred from the motor/generator shaft through the first starter gear and the ring gear to the crankshaft to start the engine, and a second position disengaged from the ring gear to rotatably disconnect the starter mechanism from the ring gear.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 17, 2015
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan G. Holmes, Michael G. Reynolds, Alexandru Rajala, Chandra S. Namuduri, Venkata Prasad Atluri
  • Publication number: 20150258881
    Abstract: A powertrain for a vehicle is disclosed. The powertrain includes an engine, a motor-generator and a starter mechanism. The powertrain also includes a first energy storage device disposed in a parallel electrical relationship with a motor-generator and an auxiliary electric system. Additionally, the powertrain includes a first switching device selectively transitionable between a first open state to electrically disconnect the first energy storage device from at least one of the motor-generator and the auxiliary electric system, and a first closed state to electrically connect the first energy storage device to at least one of the motor-generator and the auxiliary electric system. Electrical communication between the motor-generator and the auxiliary electric system is independent of the first switching device being in the first open and closed states.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 17, 2015
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan G. Holmes, Venkata Prasad Atluri, Chandra S. Namuduri, Robert S. Conell, Michael G. Reynolds, Thomas Wolfgang Nehl, Bob R. Powell, Madhusudan Raghavan
  • Publication number: 20150258984
    Abstract: A method of controlling a hybrid vehicle having a hybrid powertrain with an engine and a motor/generator includes receiving data indicative of anticipated future vehicle operating conditions, and determining via a controller optimal operating parameters for the engine and for the motor/generator based at least partially on the data. A controller then commands a powertrain operating strategy for the engine and the motor/generator based on the determined optimal operating parameters. The data received can be from active onboard sensing systems and from vehicle telematics systems.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 17, 2015
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Venkata Prasad Atluri, Matias Garibaldi, Chandra S. Namuduri
  • Publication number: 20150258883
    Abstract: A powertrain for a vehicle and a method of assembling the powertrain are disclosed. An engine includes a crankshaft being rotatable about a longitudinal axis. A ring gear is attached to a first distal end of the crankshaft such that the ring gear and the crankshaft are rotatable in unison about the longitudinal axis. A starter mechanism is selectively operable to rotate the ring gear and the crankshaft to start the engine. A motor-generator includes an adapter selectively cooperating with the starter mechanism to dispose the motor-generator and the starter mechanism in alternative assembly configurations being a first assembly configuration and a second assembly configuration. The first assembly configuration is when the starter mechanism is coupleable to the adapter and the second assembly configuration is when the starter mechanism is spaced from the adapter to operate independently of the motor-generator.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 17, 2015
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Alan G. Holmes, Alexandru Rajala, Chandra S. Namuduri, Venkata Prasad Atluri
  • Patent number: 9108633
    Abstract: A hybrid powertrain with an engine, motor/generator, a belt drive train, a starting mechanism and one or more switching devices for one or more energy storage devices has at least one electronic controller that executes a stored algorithm and controls the hybrid powertrain in accordance with the stored algorithm to establish multiple operating modes including an operating mode in which a first switching device establishes an electrical connection between a first energy storage device and the motor/generator. The operating mode established can be dependent upon a parameter of the first energy storage device, a parameter of the control system, a parameter of the motor/generator, and/or a parameter of said at least one actuator. For example, the stored algorithm can control the hybrid powertrain based on a capacity to restart the engine.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: August 18, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Venkata Prasad Atluri, Chandra S. Namuduri, Suresh Gopalakrishnan, Alan G. Holmes, William R. Cawthorne
  • Publication number: 20150134202
    Abstract: A method of controlling steering of a vehicle through setting wheel angles of a plurality of modular electronic corner assemblies (eModules) is provided. The method includes receiving a driving mode selected from a mode selection menu. A position of a steering input device is determined in a master controller. A velocity of the vehicle is determined, in the master controller, when the determined position of the steering input device is near center. A drive mode request corresponding to the selected driving mode to the plurality of steering controllers is transmitted to the master controller. A required steering angle of each of the plurality of eModules is determined, in the master controller, as a function of the determined position of the steering input device, the determined velocity of the vehicle, and the selected first driving mode. The eModules are set to the respective determined steering angles.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 14, 2015
    Applicants: The U.S.A. As Represented by the Administrator of the National Aeronautics and Space Adminstration, GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Andrew D. Dawson, William J. Bluethmann, Chunhao J. Lee, Robert L. Vitale, Raymond Guo, Venkata Prasad Atluri
  • Publication number: 20140095018
    Abstract: The present disclosure relates to an automobile electrical system including a solar subsystem. Components collect and store solar energy in an advanced energy storage subsystem including a base portion and, in some embodiments, a solar-energy buffer. The components use the solar energy selectively to meet vehicle loads, including selectively using one or more of: energy obtained directly from the solar subsystem; energy from the advanced energy storage system; and energy from a high-voltage energy converter such as an alternator or accessory power module.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Applicant: GM Global Technology Operations LLC
    Inventors: Venkata Prasad Atluri, Michael Gerard Rubbo, Larry D. Laws
  • Patent number: 8612075
    Abstract: An electric or hybrid-electric vehicle is provided with vehicle-mounted solar cells capable of generating electrical power. The power from the array is directed to vehicle systems according to a pre-determined algorithm intended to most effectively extend the vehicle range when operated under electric power. Power from the solar cells is directed by a controller, and may be applied to directly charge the batteries or to power electric power receiving devices, for example, to control cabin temperatures, depending on factors including the state of charge of the batteries, whether or not, the vehicle is parked and the current cabin temperature. The controller is also capable of controlling and managing the operating voltage of the solar cells to ensure optimal power extraction from the cells.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: December 17, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Venkata Prasad Atluri, Thomas L. Gibson, Nelson A. Kelly
  • Patent number: 8538617
    Abstract: An auxiliary energy management system for a vehicle includes an energy storage device, solar panel array, a preconditioning device, a communication module and a solar control module. The solar panel array generates electrical energy. The pre-conditioning device generates a temperature change to the vehicle. The solar control module includes a processor for selectively configuring a distribution of electrical energy captured by the solar energy panel to one of the energy storage device and the preconditioning device. The processor includes a mode selector logic module for indicating one of a passive enablement or active enablement of the distribution of electrical energy based on a vehicle driving status and the electrical energy availability from the solar panel array. At least one of a recharging function or a preconditioning function is enabled passively or actively based on a configuration in the mode selector logic module or a personalized configuration.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: September 17, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Venkata Prasad Atluri, Madhusudan Raghavan