Fiber delivered systems for laser ignition of natural gas engines

Azer P. Yalin, Sachin Joshi, Adam Reynolds, Morgan Defoort, Bryan Willson, Almantas Galvanauskas, Yuji Matsuura, Mitsunobo Miyagi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Past research has shown that laser ignition is capable of operating high bmep engines at high efficiency and with low emission levels. However, for laser ignition systems to be adopted by industry, one requires a practical (and economical) mode of beam delivery other than the conventional open-path beam delivery that has been used in much of the past research. One potential beam delivery method is via optical fibers capable of handling high peak power. This paper summarizes our recent efforts in this area. Using coated hollow fibers, our research group has demonstrated the delivery of laser pulses to form optical sparks both on the bench-top and for ignition and operation of a single cylinder of an ARES engine. When held relatively straight, the hollow fibers allow transmission of nanosecond pulse energies of 10s of milli-Joules with transmission above 90% and sufficient beam quality for spark formation. We have also been able to deliver optical sparks on the bench-top with high peak power pulsed fiber lasers. Pulse energies in those experiments were approximately 2 mJ. Other recent work has studied the transmission characteristics of recently developed photonic crystal fibers.

Original languageEnglish
Title of host publicationProceedings of ASME Internal Combustion Engine Division 2006 Fall Technical Conference
DOIs
Publication statusPublished - 2006 Nov 28
EventASME Internal Combustion Engine Division 2006 Fall Technical Conference - Sacramento, CA, United States
Duration: 2006 Nov 52006 Nov 8

Publication series

NameAmerican Society of Mechanical Engineers, Internal Combustion Engine Division (Publication) ICE
Volume2006
ISSN (Print)1066-5048

Other

OtherASME Internal Combustion Engine Division 2006 Fall Technical Conference
CountryUnited States
CitySacramento, CA
Period06/11/506/11/8

Keywords

  • Fiber lasers
  • Fiber optics
  • Gas engine
  • Hollow fibers
  • Laser ignition
  • Photonic crystal fibers

ASJC Scopus subject areas

  • Engineering(all)

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