Precision ignition

Sen, Philip
November 2002
Engineer (00137758);11/8/2002, Vol. 291 Issue 7615, p11
Evaluates the use of laser for gas-turbine ignition, rocket ignition and instability damping in the U.S. Principle of the laser-based ignition technique; Advantages of using laser-based ignition technique. INSET: DEWER NOX-IOUS EMISSIONS.


Related Articles

  • Kinetic Modelling of the Ignition Delays in Monomethylhydrazine/hydrogen/oxygen/argon Gaseous Mixtures. Catoire, L; Ludwig, T; Dupre, G; Paillard, C // Proceedings of the Institution of Mechanical Engineers -- Part G;1998, Vol. 212 Issue 6, p393 

    The objective of this study is to estimate the efficiency of ignition promotion or inhibition for H[sub 2]/O[sub 2]/Ar mixtures by monomethylhydrazine CH[sub 3]NHNH[sub 2], noted MMH), a propellant widely used in rocket propulsion systems. This is accomplished by computations performed with a...

  • Dynamics of flame propagation using laser-induced spark initiation: Ignition energy measurements. Syage, J. A.; Fournier, E. W.; Rianda, R.; Cohen, R. B. // Journal of Applied Physics;8/1/1988, Vol. 64 Issue 3, p1499 

    Presents a study which developed a method for measuring low-energy ignition of combustible mixtures using nanosecond and picosecond laser-induced breakdown. Experimental details; Results and discussion; Conclusion.

  • Numerical Study of the Threshold Intensity Dependence on Wavelength in Laser Spark Ignition of Molecular Hydrogen Combustion. Hamam, Kholoud A.; Abdellatif, Galila; Gamal, Yosr E. E.-D. // Journal of Modern Physics (21531196);Mar2013, Vol. 4 Issue 3, p311 

    A numerical investigation of laser wavelength dependence on the threshold intensity of spark ignition in molecular hydrogen over a wide pressure range is presented. A modified electron cascade model (Gamal et al., 1993) is applied under the experimental conditions that carried out by Phuoc...

  • In situ laser diode replaces spark plug. Brinkmann, Uwe // Laser Focus World;Oct2004, Vol. 40 Issue 10, p31 

    Reports that researchers Carinthian Tech Research and AVL List in Austria have developed a laser spark design that allows a traditional electrical spark plug in any engine to be replaced by a laser device so that ignition-improvement studies can be performed. Advantages of the device; Challenge...

  • Measurements of preheat and shock melting in Be ablators during the first few nanoseconds of a National Ignition Facility ignition drive using the Omega laser. Bradley, D. K.; Prisbrey, S. T.; Page, R. H.; Braun, D. G.; Edwards, M. J.; Hibbard, R.; Moreno, K. A.; Mauldin, M. P.; Nikroo, A. // Physics of Plasmas;Apr2009, Vol. 16 Issue 4, p042703 

    A scaled Hohlraum platform was used to experimentally measure preheat in ablator materials during the first few nanoseconds of a radiation drive proposed for ignition experiments at the National Ignition Facility [J. A. Paisner et al., Laser Focus World 30, 75 (1994)]. The platform design...

  • Development of a fuel stratification spark ignition engine. Li, Y; Zhao, H; Leach, B; Ma, T // Proceedings of the Institution of Mechanical Engineers -- Part D;Jul2005, Vol. 219 Issue 7, p923 

    A fuel stratification concept is being researched and developed in a three-valve twin-spark ignition engine. This concept requires that two different fuels or fuel components be introduced into the cylinder separately through two independent inlet ports. The fuels will be stratified laterally by...

  • Energy transfer between laser beams crossing in ignition hohlraums. Michel, P.; Divol, L.; Williams, E. A.; Thomas, C. A.; Callahan, D. A.; Weber, S.; Haan, S. W.; Salmonson, J. D.; Meezan, N. B.; Landen, O. L.; Dixit, S.; Hinkel, D. E.; Edwards, M. J.; MacGowan, B. J.; Lindl, J. D.; Glenzer, S. H.; Suter, L. J. // Physics of Plasmas;Apr2009, Vol. 16 Issue 4, p042702 

    The full scale modeling of power transfer between laser beams crossing in plasmas is presented. A new model was developed, allowing calculations of the propagation and coupling of pairs of laser beams with their associated plasma wave in three dimensions. The complete set of laser beam smoothing...

  • Simultaneous flow field and fuel concentration imaging at 4.8 kHz in an operating engine. Peterson, B.; Sick, V. // Applied Physics B: Lasers & Optics;Dec2009, Vol. 97 Issue 4, p887 

    High-speed particle image velocimetry (PIV) and planar laser induced fluorescence (PLIF) techniques are combined to acquire flow field and fuel concentration in a spray-guided spark-ignited direct-injection (SG-SIDI) engine under motored and fired operation. This is a crucial step to enable...

  • Lasers for engine ignition. Graham-Rowe, Duncan; Won, Rachel // Nature Photonics;Sep2008, Vol. 2 Issue 9, p515 

    The article reports on the idea of using laser technology to replace spark plugs due to the rising evidence suggesting that the use of lasers to ignite fuel in combustion engines improves reliability and brings about higher efficiency as that of conventional spark plugs. The use of laser...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics