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Title: Multiple laser pulse ignition method and apparatus

Abstract

Two or more laser light pulses with certain differing temporal lengths and peak pulse powers can be employed sequentially to regulate the rate and duration of laser energy delivery to fuel mixtures, thereby improving fuel ignition performance over a wide range of fuel parameters such as fuel/oxidizer ratios, fuel droplet size, number density and velocity within a fuel aerosol, and initial fuel temperatures.

Inventors:
 [1]
  1. Los Alamos, NM
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
871574
Patent Number(s):
US 5756924
Assignee:
Regents of University of California (Oakland, CA)
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
multiple; laser; pulse; ignition; method; apparatus; light; pulses; differing; temporal; lengths; peak; powers; employed; sequentially; regulate; rate; duration; energy; delivery; fuel; mixtures; improving; performance; wide; range; parameters; oxidizer; ratios; droplet; size; density; velocity; aerosol; initial; temperatures; light pulses; laser pulse; laser light; wide range; laser energy; fuel mixture; pulse power; light pulse; multiple laser; droplet size; fuel ignition; peak pulse; fuel mixtures; ignition performance; ignition method; temporal length; /102/123/372/

Citation Formats

Early, James W. Multiple laser pulse ignition method and apparatus. United States: N. p., 1998. Web.
Early, James W. Multiple laser pulse ignition method and apparatus. United States.
Early, James W. 1998. "Multiple laser pulse ignition method and apparatus". United States. https://www.osti.gov/servlets/purl/871574.
@article{osti_871574,
title = {Multiple laser pulse ignition method and apparatus},
author = {Early, James W},
abstractNote = {Two or more laser light pulses with certain differing temporal lengths and peak pulse powers can be employed sequentially to regulate the rate and duration of laser energy delivery to fuel mixtures, thereby improving fuel ignition performance over a wide range of fuel parameters such as fuel/oxidizer ratios, fuel droplet size, number density and velocity within a fuel aerosol, and initial fuel temperatures.},
doi = {},
url = {https://www.osti.gov/biblio/871574}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {5}
}

Works referenced in this record:

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Laser induced spark ignition of methane-oxygen mixtures
conference, February 2013


Droplet size and equivalence ratio effects on spark ignition of monodisperse N-heptane and methanol sprays
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Ignition by condenser sparks. Regions of flammability of ethane, propane, n-butane and n-pentane
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conference, February 1978

  • Dale, J. D.; Smy, P. R.; Clements, R. M.
  • 1978 Automotive Engineering Congress and Exposition, SAE Technical Paper Series
  • https://doi.org/10.4271/780329

Ignition and flame quenching of flowing heterogeneous fuel-air mixtures
journal, January 1979


The effect of plasma constitution on laser ignition energies
journal, January 1977


Laser versus conventional ignition of flames
conference, May 1993