Multiple laser pulse ignition method and apparatus

Early, James W

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:

Early, James W ^[1]

Los Alamos, NM

Issue Date:: 1998-05-26

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

OSTI Identifier:: 871574

Patent Number(s):: 5756924

Assignee:: Regents of University of California (Oakland, CA)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02P - IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02C - GAS-TURBINE PLANTS

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F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02P - IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES
F02P23/04 - Other physical ignition means, e.g. using laser rays

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02C - GAS-TURBINE PLANTS
F02C7/264 - Ignition

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02K - JET-PROPULSION PLANTS
F02K9/95 - characterised by starting or ignition means or arrangements

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
F02D2200/0606 - Fuel temperature

F - MECHANICAL ENGINEERING F42 - AMMUNITION F42B - EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
F42B3/113 - activated by optical means, e.g. laser, flashlight

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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.

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                    Early, James W. Multiple laser pulse ignition method and apparatus.  United States.

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                    Early, James W. Tue .  
        "Multiple laser pulse ignition method and apparatus".  United States.  https://www.osti.gov/servlets/purl/871574.

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@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          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1998},

  month        = {5}

}

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Works referenced in this record:

Dynamics of flame propagation using laser‐induced spark initiation: Ignition energy measurements
journal, August 1988

Syage, J. A.; Fournier, E. W.; Rianda, R.
Journal of Applied Physics, Vol. 64, Issue 3
https://doi.org/10.1063/1.341824

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

Lee, T.; Santavicca, D.
Conference on Advanced SEI Technologies
https://doi.org/10.2514/6.1991-3598

Droplet size and equivalence ratio effects on spark ignition of monodisperse N-heptane and methanol sprays
journal, December 1988

Danis, Allen M.; Namer, Izak; Cernansky, Nicholas P.
Combustion and Flame, Vol. 74, Issue 3
https://doi.org/10.1016/0010-2180(88)90074-0

Ignition by condenser sparks. Regions of flammability of ethane, propane, n-butane and n-pentane
journal, January 1953

Laffitte, P.; Delbourgo, R.
Symposium (International) on Combustion, Vol. 4, Issue 1
https://doi.org/10.1016/S0082-0784(53)80014-7

Laser Ignited Internal Combustion Engine - An Experimental Study
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

Ballal, D.; Lefebvre, A.
Combustion and Flame, Vol. 35
https://doi.org/10.1016/0010-2180(79)90019-1

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

Kingdon, Richard G.; Weinberg, Felix J.
Symposium (International) on Combustion, Vol. 16, Issue 1
https://doi.org/10.1016/S0082-0784(77)80368-8

Laser versus conventional ignition of flames
conference, May 1993

Ronney, Paul D.
OE/LASE'93: Optics, Electro-Optics, & Laser Applications in Science& Engineering, SPIE Proceedings
https://doi.org/10.1117/12.145692

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Similar Records

Title: Multiple laser pulse ignition method and apparatus

Abstract

Citation Formats

Dynamics of flame propagation using laser‐induced spark initiation: Ignition energy measurements journal, August 1988

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 journal, December 1988

Ignition by condenser sparks. Regions of flammability of ethane, propane, n-butane and n-pentane journal, January 1953

Laser Ignited Internal Combustion Engine - An Experimental Study conference, February 1978

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

Dynamics of flame propagation using laser‐induced spark initiation: Ignition energy measurements
journal, August 1988

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
journal, December 1988

Ignition by condenser sparks. Regions of flammability of ethane, propane, n-butane and n-pentane
journal, January 1953

Laser Ignited Internal Combustion Engine - An Experimental Study
conference, February 1978

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