Patents by Inventor Rafik N. Rofail

Rafik N. Rofail 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: 20170234219
    Abstract: A fuel burner system (10) for a turbine engine (12) configured to operate with syngas fuel, whereby the fuel burner system (10) is configured to reduce nozzle and combustor basket temperatures is disclosed. The fuel burner system (10) may include a plurality of first and second fuel injection ports (16) positioned within a combustor (18), whereby the first fuel injection ports (14) are larger than the second fuel injection ports (16). One or more air injection ports (20) may be aligned with the first fuel injection ports (14). During operation, fuel injected into the combustor (18) from the first fuel injection ports (14) mixes better with the incoming air, causing reduced NOx emissions and lower flame temperatures. Also, the regions between adjacent air injection ports (20), which typically run the hottest, are cooler than conventional combustion system due, in part, to the smaller, second fuel injection ports (16) aligned with regions (22) between adjacent air injection ports (20).
    Type: Application
    Filed: September 11, 2014
    Publication date: August 17, 2017
    Inventors: Vinayak V. Barve, Rafik N. Rofail, Samer P. Wasif, Clifford E. Johnson, Khalil Farid Abou-Jaoude, Stephan Buch, Bernd Prade, J├╝rgen Meisl
  • Publication number: 20150167980
    Abstract: A gas turbine engine (202) including a secondary fuel stage (218) which also functions as a dual frequency resonator. The engine includes a combustor (210) and a casing (205) enclosing the combustor to define a volume (214). The secondary fuel stage includes a nozzle (217) sized to be effective as a transverse resonator at a high frequency. The nozzle and the volume (214) of the casing are sized to be effective as a longitudinal resonator at an intermediate frequency.
    Type: Application
    Filed: December 18, 2013
    Publication date: June 18, 2015
    Inventors: Jared M. Pent, Juan Enrique Portillo Bilbao, Perry L. Johnson, Esam Abu-Irshaid, Walter R. Laster, Scott M. Martin, Rafik N. Rofail