Patents by Inventor Sreenath Borra Gupta

Sreenath Borra Gupta 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).

  • Method and system to distribute high-energy pulses to multiple channels
    Patent number: 7699033
    Abstract: A method and system to distribute high-power laser pulses to create sparks in individual cylinders of a multi-cylinder engine are provided. A laser provides laser output pulses. A distributor includes a linear array of mirrors with a respective mirror associated with one of the laser plugs. Each mirror is operatively controlled to move into a laser beam path to direct individual laser output pulses the associated laser plug for providing spark generation. The system enables correct cylinder firing order for predefined multi-cylinder firing sequences and allows for individual cylinder timing variation.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: April 20, 2010
    Assignee: UChicago Argonne, LLC
    Inventors: Bipin Bihari, Sreenath Borra Gupta, Ramanujam Raj Sekar
  • METHOD AND SYSTEM TO DISTRIBUTE HIGH-ENERGY LASER PULSES TO MULTIPLE CHANNELS
    Publication number: 20090133654
    Abstract: A method and system to distribute high-power laser pulses to create sparks in individual cylinders of a multi-cylinder engine are provided. A laser provides laser output pulses. A distributor includes a linear array of mirrors with a respective mirror associated with one of the laser plugs. Each mirror is operatively controlled to move into a laser beam path to direct individual laser output pulses the associated laser plug for providing spark generation. The system enables correct cylinder firing order for predefined multi-cylinder firing sequences and allows for individual cylinder timing variation.
    Type: Application
    Filed: November 27, 2007
    Publication date: May 28, 2009
    Inventors: Bipin Bihari, Sreenath Borra Gupta, Ramanujam Raj Sekar
  • Nitrogen enriched combustion of a natural gas internal combustion engine to reduce NOemissions
    Patent number: 7455046
    Abstract: A method and system for reducing nitrous oxide emissions from an internal combustion engine. An input gas stream of natural gas includes a nitrogen gas enrichment which reduces nitrous oxide emissions. In addition ignition timing for gas combustion is advanced to improve FCE while maintaining lower nitrous oxide emissions.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: November 25, 2008
    Assignee: U Chicago Argonne LLC
    Inventors: Munidhar S. Biruduganti, Sreenath Borra Gupta, R. Raj Sekar, Steven S. McConnell
  • Laser based ignition system for natural gas reciprocating engines, laser based ignition system having capability to detect successful ignition event; and distributor system for use with high-powered pulsed lasers
    Patent number: 7114858
    Abstract: A laser based ignition system for stationary natural gas engines, a distributor system for use with high-powered lasers, and a method of determining a successful ignition event in a laser-based ignition system are provided. The laser based ignition (LBI) system for stationary natural gas engines includes a high power pulsed laser providing a pulsed emission output coupled to a plurality of laser plugs. A respective one of the plurality of laser plugs is provided in an engine cylinder. The laser plug focuses the coherent emission from the pulsed laser to a tiny volume or focal spot and a high electric field gradient at the focal spot leads to photoionization of the combustible mixture resulting in ignition.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: October 3, 2006
    Assignee: The University of Chicago
    Inventors: Sreenath Borra Gupta, Ramanujam Raj Sekar, Gregory E. Hillman