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Title: Pulse combustor with controllable oscillations

Abstract

A pulse combustor having thermally induced pulse combustion in a continuously flowing system is described. The pulse combustor is fitted with at lease one elongated ceramic body which significantly increases the heat transfer area in the combustion chamber of the combustor. The ceramic body or bodies possess sufficient mass and heat capacity to ignite the fuel-air charge once the ceramic body or bodies are heated by conventional spark plug initiated combustion so as to provide repetitive ignition and combustion of sequentially introduced fuel-air charges without the assistance of the spark plug and the rapid quenching of the flame after each ignition in a controlled manner so as to provide a selective control over the oscillation frequency and amplitude. Additional control over the heat transfer in the combustion chamber is provided by employing heat exchange mechanisms for selectively heating or cooling the elongated ceramic body or bodies and/or the walls of the combustion chamber.

Inventors:
 [1];  [2];  [1]
  1. (Morgantown, WV)
  2. (Columbiana, OH)
Publication Date:
Research Org.:
National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
OSTI Identifier:
868354
Patent Number(s):
US 5123835
Assignee:
United States of America as represented by United States (Washington, DC) NETL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
pulse; combustor; controllable; oscillations; thermally; induced; combustion; continuously; flowing; described; fitted; lease; elongated; ceramic; significantly; increases; heat; transfer; chamber; bodies; possess; sufficient; mass; capacity; ignite; fuel-air; charge; heated; conventional; spark; plug; initiated; provide; repetitive; ignition; sequentially; introduced; charges; assistance; rapid; quenching; flame; controlled; manner; selective; control; oscillation; frequency; amplitude; additional; provided; employing; exchange; mechanisms; selectively; heating; cooling; walls; significantly increases; heat capacity; oscillation frequency; thermally induced; spark plug; combustion chamber; heat exchange; heat transfer; controlled manner; pulse combustor; sufficient mass; additional control; rapid quenching; continuously flowing; rapid quench; pulse combustion; employing heat; significantly increase; /431/60/122/

Citation Formats

Richards, George A., Welter, Michael J., and Morris, Gary J. Pulse combustor with controllable oscillations. United States: N. p., 1992. Web.
Richards, George A., Welter, Michael J., & Morris, Gary J. Pulse combustor with controllable oscillations. United States.
Richards, George A., Welter, Michael J., and Morris, Gary J. Wed . "Pulse combustor with controllable oscillations". United States. doi:. https://www.osti.gov/servlets/purl/868354.
@article{osti_868354,
title = {Pulse combustor with controllable oscillations},
author = {Richards, George A. and Welter, Michael J. and Morris, Gary J.},
abstractNote = {A pulse combustor having thermally induced pulse combustion in a continuously flowing system is described. The pulse combustor is fitted with at lease one elongated ceramic body which significantly increases the heat transfer area in the combustion chamber of the combustor. The ceramic body or bodies possess sufficient mass and heat capacity to ignite the fuel-air charge once the ceramic body or bodies are heated by conventional spark plug initiated combustion so as to provide repetitive ignition and combustion of sequentially introduced fuel-air charges without the assistance of the spark plug and the rapid quenching of the flame after each ignition in a controlled manner so as to provide a selective control over the oscillation frequency and amplitude. Additional control over the heat transfer in the combustion chamber is provided by employing heat exchange mechanisms for selectively heating or cooling the elongated ceramic body or bodies and/or the walls of the combustion chamber.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}

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