Patents by Inventor Padmanabha R. ETTIREDDY

Padmanabha R. ETTIREDDY 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).

  • Exhaust aftertreatment system with ammonia gas generator
    Patent number: 10458302
    Abstract: An exhaust aftertreatment system may include a reductant tank, a gaseous ammonia source, an injector, first conduit and a second conduit. The injector may receive the liquid reductant from the reductant tank and the gaseous ammonia from the gaseous ammonia source and inject the liquid reductant into a stream of exhaust gas in a first mode, inject the gaseous ammonia into the stream of exhaust gas in a second mode, and both the liquid reductant and the gaseous ammonia into the stream of exhaust gas in a third mode. The first conduit may communicate liquid reductant from the reductant tank to the injector. The second conduit may communicate gaseous ammonia from the gaseous ammonia source to the injector.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: October 29, 2019
    Assignees: Tenneco Automotive Operating Company Inc., Tenneco GmbH
    Inventors: Mark Devito, Ryan A. Floyd, Adam J. Kotrba, Padmanabha R. Ettireddy, Michael C. Bradford, Bradley Fingland, John W. Degeorge, Philipp Kreutziger, Manuel Kluck, Michael Flockert, Mathias Hund, Eric A. Hein
  • EXHAUST AFTERTREATMENT SYSTEM WITH AMMONIA GAS GENERATOR
    Publication number: 20180238217
    Abstract: An exhaust aftertreatment system may include a reductant tank, a gaseous ammonia source, an injector, first conduit and a second conduit. The injector may receive the liquid reductant from the reductant tank and the gaseous ammonia from the gaseous ammonia source and inject the liquid reductant into a stream of exhaust gas in a first mode, inject the gaseous ammonia into the stream of exhaust gas in a second mode, and both the liquid reductant and the gaseous ammonia into the stream of exhaust gas in a third mode. The first conduit may communicate liquid reductant from the reductant tank to the injector. The second conduit may communicate gaseous ammonia from the gaseous ammonia source to the injector.
    Type: Application
    Filed: August 19, 2016
    Publication date: August 23, 2018
    Applicants: Tenneco Automotive Operating Company Inc., Tenneco GmbH
    Inventors: Mark DEVITO, Ryan A. FLOYD, Adam J. KOTRBA, Padmanabha R. ETTIREDDY, Michael C. BRADFORD, Bradley FINGLAND, John W. DEGEORGE, Philipp KREUTZIGER, Manuel KLUCK, Michael FLOCKERT, Mathias HUND, Eric A. HEIN
  • Exhaust aftertreatment system with ammonia gas generator
    Patent number: 9702291
    Abstract: An exhaust aftertreatment system may include a reductant tank, a reactor system, a storage tank, a first conduit and a second conduit. The reactor system may receive reductant from the reductant tank and may output a gas comprising ammonia. The storage tank may receive gas comprising ammonia from the reactor system and may store a volume of gas comprising ammonia. The first conduit may communicate gas comprising ammonia from the reactor system to a stream of exhaust gas. The first conduit may bypass the storage tank. The second conduit may communicate gas comprising ammonia from the storage tank to the stream of exhaust gas.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: July 11, 2017
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Padmanabha R. Ettireddy, Bradley Fingland, Adam J. Kotrba, John W. Degeorge, Michael C. Bradford
  • Exhaust Aftertreatment System With Ammonia Gas Generator
    Publication number: 20170122169
    Abstract: An exhaust aftertreatment system may include a reductant tank, a reactor system, a storage tank, a first conduit and a second conduit. The reactor system may receive reductant from the reductant tank and may output a gas comprising ammonia. The storage tank may receive gas comprising ammonia from the reactor system and may store a volume of gas comprising ammonia. The first conduit may communicate gas comprising ammonia from the reactor system to a stream of exhaust gas. The first conduit may bypass the storage tank. The second conduit may communicate gas comprising ammonia from the storage tank to the stream of exhaust gas.
    Type: Application
    Filed: November 3, 2015
    Publication date: May 4, 2017
    Inventors: Padmanabha R. ETTIREDDY, Bradley FINGLAND, Adam J. KOTRBA, John W. DEGEORGE, Michael C. BRADFORD