Laser-induced spark ignition fundamental and applications
Laser ignition has become an active research topic in recent years because it has the potential to replace the conventional electric spark plugs in engines that are required to operate under much higher compression ratios, faster compression rates, and much leaner fuel-to-air ratios than gas engines today. It is anticipated that the igniter in these engines will face with pressures as high as 50MPa and temperatures as high as 4000 K. Using the conventional ignition system, the required voltage and energy must be greatly increased (voltages in excess of 40 kV) to reliably ignite the air and fuel mixture under these conditions. Increasing the voltage and energy does not always improve ignitability but it does create greater reliability problem. The objective of this paper is to review past work to identify some fundamental issues underlying the physics of the laser spark ignition process and research needs in order to bring the laser ignition concept into the realm of reality.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR
- Sponsoring Organization:
- USDOE - Office of Fossil Energy (FE)
- DOE Contract Number:
- None cited
- OSTI ID:
- 938584
- Report Number(s):
- DOE/NETL-IR-2006-194; NETL-TPR-1162; TRN: US200820%%169
- Journal Information:
- Optics and Lasers in Engineering, Vol. 44, Issue 5; ISSN 0143-8166
- Publisher:
- Elsevier Ltd.
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AIR
COMPRESSION
COMPRESSION RATIO
ELECTRIC SPARKS
ENGINES
IGNITION
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
LASERS
MIXTURES
PHYSICS
RELIABILITY
CHEMISORPTION
PENTACENE
SILICON
SORPTIVE PROPERTIES
MORPHOLOGY
ADSORPTION HEAT
Laser ignition
Gas breakdown
Spark evolution
Ignition mechanism
Ignition energy