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: 20220135219
    Abstract: A system to distribute power in the operation of a drone vehicle includes a primary energy storage unit, a plurality of power boost modules that communicate electrically with the primary energy storage unit, and a plurality of propeller-motor modules, each of the plurality of propeller-motor modules being connected electrically to a respective power boost module of the plurality of power boost modules. One or more of the plurality of power boost modules provide on-demand additional energy to a respective propeller-motor module during the operation of the drone vehicle.
    Type: Application
    Filed: October 30, 2020
    Publication date: May 5, 2022
    Inventors: Venkata Prasad Atluri, Venkatesh Gopalakrishnan, Neeraj S. Shidore, Chandra S. Namuduri
  • Publication number: 20220126714
    Abstract: A system to extend a towing range and maneuverability of an automobile vehicle during a towing operation includes a battery-electric-vehicle (BEV) having a vehicle energy pack providing operational energy to the BEV. A powered trailer is releasably connected to the BEV. A trailer module is provided with the powered trailer, the trailer module communicating between the powered trailer and the BEV. A propulsion unit is provided with the powered trailer and is in communication with trailer module and with the BEV using the trailer module. The propulsion unit enhances launch of the BEV and provides an acceleration assist to the BEV.
    Type: Application
    Filed: October 22, 2020
    Publication date: April 28, 2022
    Inventors: Norman K. Bucknor, Madhusudan Raghavan, Venkata Prasad Atluri
  • Publication number: 20220097540
    Abstract: An apparatus for charging an electric vehicle includes a plug command center having data identifying an availability of an amount of energy which is available for transfer from a first battery system of a first battery electric vehicle (BEV) to a second BEV. A charging adapter provides for energy transfer between a first plug of the first BEV and a second plug of the second BEV. A V2V charging controller communicates data identifying a battery system charge state of the first BEV and a battery system charge state of the second BEV and selects between multiple available charging options.
    Type: Application
    Filed: September 30, 2020
    Publication date: March 31, 2022
    Inventors: Venkata Prasad Atluri, Hanho Yun, Chandra S. Namuduri, Madhusudan Raghavan, Venkatesh Gopalakrishnan
  • Patent number: 11252840
    Abstract: A cooling assembly according to various aspects of the present disclosure includes a housing, an electronic component, a dielectric coolant, and a cover. The housing includes an interior compartment having a basin region in which the electronic component and the coolant are disposed. The coolant undergoes phase change between a liquid state and a gas state. The coolant is in direct contact with the electronic component in the liquid state. The cover component extends transversely through the interior compartment and is coupled to the body. The cover component is disposed in a direction with respect to the basin region. The cover component at least partially defines a port in fluid communication with the basin region. The cover component is configured to permit flow therethrough of the dielectric coolant in the gas state in at least the direction.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: February 15, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Anil K. Sachdev, Chih-Hung Yen, Venkata Prasad Atluri
  • Publication number: 20220032803
    Abstract: A charging system of an electrical automobile vehicle includes a converter unit and a first energy storage system of within a first automobile vehicle. A charging cable is releasably connected from the first energy storage system to a charging station or is releasably connected to a second energy storage system of a second automobile vehicle. A vehicle charging controller is connected to the converter unit and programmed to communicate with the charging station and to the second energy storage system. A plurality of low-loss switching devices of the converter unit are selectively operated by signals from the vehicle charging controller to position the plurality of low-loss switching devices in an on-state (ON) or an off-state (OFF) to control charging the first energy storage system from the charging station or charging the second energy storage system from the first energy storage system.
    Type: Application
    Filed: July 31, 2020
    Publication date: February 3, 2022
    Inventors: Lei Hao, Venkata Prasad Atluri, Chandra S. Namuduri, Suresh Gopalakrishnan
  • Patent number: 11235678
    Abstract: A charging system of an electrical automobile vehicle includes a converter unit and a first energy storage system of within a first automobile vehicle. A charging cable is releasably connected from the first energy storage system to a charging station or is releasably connected to a second energy storage system of a second automobile vehicle. A vehicle charging controller is connected to the converter unit and programmed to communicate with the charging station and to the second energy storage system. A plurality of low-loss switching devices of the converter unit are selectively operated by signals from the vehicle charging controller to position the plurality of low-loss switching devices in an on-state (ON) or an off-state (OFF) to control charging the first energy storage system from the charging station or charging the second energy storage system from the first energy storage system.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: February 1, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Lei Hao, Venkata Prasad Atluri, Chandra S. Namuduri, Suresh Gopalakrishnan
  • Publication number: 20210129687
    Abstract: A system for utilizing a deployable flex range battery to augment a primary battery is provided. The system includes a flex electronics bay. The flex electronics bay is electrically connected to an electrical sub-system including the primary battery and includes a DC-DC converter operable to change a voltage of electric power and at least one battery connection terminal. The system further includes the deployable flex range battery removably connected to the at least one battery connection terminal and a flex electronics bay controller programmed to selectively supply electric power from the flex electronics bay to the electrical sub-system.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 6, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Venkata Prasad Atluri, Hanho Yun, Neeraj S. Shidore, Chandra S. Namuduri, Venkatesh Gopalakrishnan
  • Publication number: 20210084790
    Abstract: A cooling assembly according to various aspects of the present disclosure includes a housing, an electronic component, a dielectric coolant, and a cover. The housing includes an interior compartment having a basin region in which the electronic component and the coolant are disposed. The coolant undergoes phase change between a liquid state and a gas state. The coolant is in direct contact with the electronic component in the liquid state. The cover component extends transversely through the interior compartment and is coupled to the body. The cover component is disposed in a direction with respect to the basin region. The cover component at least partially defines a port in fluid communication with the basin region. The cover component is configured to permit flow therethrough of the dielectric coolant in the gas state in at least the direction.
    Type: Application
    Filed: September 18, 2019
    Publication date: March 18, 2021
    Inventors: Anil K. SACHDEV, Chih-hung YEN, Venkata Prasad ATLURI
  • Patent number: 10676080
    Abstract: Hybrid vehicles and methods of operating the same are disclosed. Example methods may include providing a powertrain for the vehicle, which includes an internal combustion engine configured to provide rotational power to a rotatable input of a transmission by way of a starting device, and an electric motor-generator comprising a rotor configured to selectively provide rotational power to the rotatable input. The method may further include selectively disconnecting the engine from the rotatable input using a disconnect device separate from the starting device, thereby allowing the rotatable input of the transmission to be driven at a speed faster than an output speed of the engine.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: June 9, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Dongxu Li, Norman K. Bucknor, Chunhao J. Lee, Venkata Prasad Atluri, Neeraj Shidore, Farzad Samie, Derek F. Lahr
  • Patent number: 10632862
    Abstract: An electric power system includes an energy recovery system that is operable to convert kinetic energy into electric energy at a first voltage. A primary energy storage device is electrically connected to the energy recovery system at the first voltage. A first voltage autonomous driving system load is disposed in a parallel circuit with the energy recovery system and the primary energy storage device. A bi-directional DC-DC converter is electrically connected to the energy recovery system and the primary energy storage device for converting the electric energy between the first voltage and a second voltage. A secondary energy storage device is electrically connected to the bi-directional DC-DC converter at the second voltage. A second voltage autonomous driving system load is disposed in a parallel circuit with the secondary energy storage device.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: April 28, 2020
    Assignee: GM Global Technology Operations LLC
    Inventors: Venkata Prasad Atluri, Chandra S. Namuduri, Massimo Osella, Upali P. Mudalige, Nikhil L. Hoskeri
  • Patent number: 10597022
    Abstract: Presented are model-based control systems for operating parallel hybrid powertrains, methods for making/using such systems, and motor vehicles with parallel hybrid powertrains and model-based torque and speed control capabilities. A method for controlling operation of a hybrid powertrain includes receiving a command signal for a hybrid powertrain operation associated with a driver input and a current operating mode of the powertrain. A desired output torque for executing the powertrain operation is then determined. The method determines if a speed differential between an engine speed of an engine and a torque converter output speed of a torque converter is less than a calibrated threshold; if so, the method responsively engages a clutch device to operatively connect the engine's output member to the transmission's input member. Engine torque is then coordinated with motor torque such that the sum of the engine and motor torques is approximately equal to the desired output torque.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: March 24, 2020
    Assignee: GM Global Technology Operations LLC
    Inventors: Yue-Yun Wang, Venkata Prasad Atluri, Dongxu Li, Chunhao J. Lee
  • Publication number: 20200079351
    Abstract: Hybrid vehicles and methods of operating the same are disclosed. Example methods may include providing a powertrain for the vehicle, which includes an internal combustion engine configured to provide rotational power to a rotatable input of a transmission by way of a starting device, and an electric motor-generator comprising a rotor configured to selectively provide rotational power to the rotatable input. The method may further include selectively disconnecting the engine from the rotatable input using a disconnect device separate from the starting device, thereby allowing the rotatable input of the transmission to be driven at a speed faster than an output speed of the engine.
    Type: Application
    Filed: September 10, 2018
    Publication date: March 12, 2020
    Inventors: Dongxu Li, Norman K. Bucknor, Chunhao J. Lee, Venkata Prasad Atluri, Neeraj Shidore, Farzad Samie, Derek F. Lahr
  • Patent number: 10479220
    Abstract: A powertrain includes a motor-generator that is coupled to an engine. A starter mechanism is coupled to the engine. A first energy storage device is disposed in a parallel electrical relationship with the starter mechanism. A second energy storage device is disposed in a parallel electrical relationship with the motor-generator. The electrical circuit exhibits a first electrical resistance between the first energy storage device and the motor-generator, and a second electrical resistance between the second energy storage device and the motor-generator. The first electrical resistance is greater than the second electrical resistance so that electrical energy from the motor-generator more easily flows to the second energy storage device than the first energy storage device, and the motor-generator more easily draws electrical energy from the second energy storage device than from the first energy storage device.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: November 19, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Chandra S. Namuduri, Venkata Prasad Atluri, Suresh Gopalakrishnan
  • Publication number: 20190323474
    Abstract: A starter system for a powertrain comprises a brushless electric starter motor operatively connectable to an internal combustion engine. The starter system includes both an ultracapacitor power pack and a battery power pack. A nominal voltage of the ultracapacitor power pack is greater than that of the battery power pack. A DC-DC converter operatively connects the battery power pack and the ultracapacitor power pack and converts direct current at a first voltage level of the battery power pack to direct current at a greater second voltage level of the ultracapacitor power pack. An electronic control system is operable to control the brushless electric starter motor to start the engine using power provided from the ultracapacitor power pack, and to control the DC-DC converter to recharge the ultracapacitor power pack using power provided from the battery power pack through the DC-DC converter. A method of controlling the starter system is included.
    Type: Application
    Filed: April 24, 2018
    Publication date: October 24, 2019
    Applicant: GM Global Technology Operations LLC
    Inventors: Chandra S. Namuduri, Venkata Prasad Atluri, Lei Hao
  • Patent number: 10436167
    Abstract: A starter system for a powertrain comprises a brushless electric starter motor operatively connectable to an internal combustion engine. The starter system includes both an ultracapacitor power pack and a battery power pack. A nominal voltage of the ultracapacitor power pack is greater than that of the battery power pack. A DC-DC converter operatively connects the battery power pack and the ultracapacitor power pack and converts direct current at a first voltage level of the battery power pack to direct current at a greater second voltage level of the ultracapacitor power pack. An electronic control system is operable to control the brushless electric starter motor to start the engine using power provided from the ultracapacitor power pack, and to control the DC-DC converter to recharge the ultracapacitor power pack using power provided from the battery power pack through the DC-DC converter. A method of controlling the starter system is included.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: October 8, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Chandra S. Namuduri, Venkata Prasad Atluri, Lei Hao
  • Publication number: 20190232950
    Abstract: A powertrain system for a vehicle operates in one of a plurality of powertrain propulsion modes including an engine-only drive mode, an electric-only (EV) drive mode, a regenerative braking mode, a coasting mode and an engine/electric-assist mode. The vehicle also includes a Global Positioning System (GPS) sensor, a vehicle navigation system, a telematics system, a vehicle spatial monitoring system and a controller. The controller includes an instruction set that is executable to determine a trajectory for the vehicle, and determine road conditions, traffic conditions and surface conditions based upon the trajectory for the vehicle and the road conditions, traffic conditions and surface conditions. One of the powertrain propulsion modes is selected based upon the trajectory for the vehicle and the road conditions, traffic conditions and surface conditions. Operation of the hybrid powertrain system is controlled in the selected propulsion mode.
    Type: Application
    Filed: January 30, 2018
    Publication date: August 1, 2019
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Venkata Prasad Atluri, Madhusudan Raghavan, Neeraj S. Shidore
  • Publication number: 20190232793
    Abstract: An electric power system includes an energy recovery system that is operable to convert kinetic energy into electric energy at a first voltage. A primary energy storage device is electrically connected to the energy recovery system at the first voltage. A first voltage autonomous driving system load is disposed in a parallel circuit with the energy recovery system and the primary energy storage device. A bi-directional DC-DC converter is electrically connected to the energy recovery system and the primary energy storage device for converting the electric energy between the first voltage and a second voltage. A secondary energy storage device is electrically connected to the bi-directional DC-DC converter at the second voltage. A second voltage autonomous driving system load is disposed in a parallel circuit with the secondary energy storage device.
    Type: Application
    Filed: January 30, 2018
    Publication date: August 1, 2019
    Applicant: GM Global Technology Operations LLC
    Inventors: Venkata Prasad Atluri, Chandra S. Namuduri, Massimo Osella, Upali P. Mudalige, Nikhil L. Hoskeri
  • Publication number: 20190232941
    Abstract: Presented are model-based control systems for operating parallel hybrid powertrains, methods for making/using such systems, and motor vehicles with parallel hybrid powertrains and model-based torque and speed control capabilities. A method for controlling operation of a hybrid powertrain includes receiving a command signal for a hybrid powertrain operation associated with a driver input and a current operating mode of the powertrain. A desired output torque for executing the powertrain operation is then determined. The method determines if a speed differential between an engine speed of an engine and a torque converter output speed of a torque converter is less than a calibrated threshold; if so, the method responsively engages a clutch device to operatively connect the engine's output member to the transmission's input member. Engine torque is then coordinated with motor torque such that the sum of the engine and motor torques is approximately equal to the desired output torque.
    Type: Application
    Filed: February 1, 2018
    Publication date: August 1, 2019
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Yue-Yun Wang, Venkata Prasad Atluri, Dongxu Li, Chunhao J. Lee
  • Patent number: 10227941
    Abstract: A vehicle propulsion system includes an internal combustion engine configured to output a primary output torque and at least one fuel injector arranged to supply fuel to a combustion chamber of the engine. The propulsion system also includes at least one exhaust aftertreatment device to capture combustion byproducts within an exhaust flow. The propulsion system also includes an electric machine coupled to the engine to exchange torque. A controller is programmed to supply a baseline fuel injection corresponding to a first engine output to satisfy a driver torque demand and to periodically supplement the baseline target fuel injection quantity to increase engine output torque to overshoot the first engine output thereby increasing combustion byproducts to regenerate the at least one exhaust aftertreatment device. The controller is also programmed to apply a resistive torque from the electric machine such that an overall propulsion system torque remains at the driver torque demand.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: March 12, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Yue-Yun Wang, Venkata Prasad Atluri, Suresh Gopalakrishnan, Alberto Lorenzo Vassallo
  • Patent number: 10207699
    Abstract: A vehicle propulsion system includes a combustion engine configured to output a propulsion torque to satisfy a propulsion demand, and a traction electric machine to generate a supplemental torque to selectively supplement the propulsion torque. The propulsion system also includes a controller programmed to forecast an acceleration demand based on at least one estimation model. The controller is also programmed to issue a command indicative of a required axle torque corresponding to the acceleration demand. The controller is further programmed to engage at least one fuel conservation action in response to the required axle torque being within a first predetermined torque threshold range.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: February 19, 2019
    Inventors: Chandra S. Namuduri, Venkata Prasad Atluri, Suresh Gopalakrishnan, Jin-Woo Lee, Kevin J. Robinet, Sai Rajagopalan, Chen-fang Chang, Michael Livshiz, Patrick J. O'leary