Experimental investigations of LASER ignition use at spark ignition engine
TLDR
In this paper, the experimental results presented the influence of LASER ignition on different engine parameters compared to electric spark ignition and the influence on in-cylinder pressure, heat release rate and engine efficiency.About:
This article is published in Procedia Manufacturing.The article was published on 2018-01-01 and is currently open access. It has received 6 citations till now. The article focuses on the topics: Ignition system & Laser ignition.read more
Citations
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Journal ArticleDOI
An overview of Higher alcohol and biodiesel as alternative fuels in engines
Erdiwansyah,Rizalman Mamat,Mohd Shahrir Mohd Sani,K. Sudhakar,K. Sudhakar,Asep Kadarohman,Ratnaningsih Eko Sardjono +6 more
TL;DR: In this paper, a review of engine performance and combustion characteristics using alternative fuels such as alcohol and biodiesel is presented and the effects of alternative fuels on emission properties such as NOx, CO and HC.
Journal ArticleDOI
Experimental and numerical study on thermodynamic performance in a designate pilot-ignition structure: Step
Shilong Zhao,Yuxin Fan +1 more
TL;DR: In this paper, a new pilot-ignition structure-step-was put forward with low resistance and developed to meet more critical challenges, such as reliable ignition and stable flame spreading.
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Continuous‐Wave Laser Ignition of Non‐Solvent Ionic Liquids Based on High Energetic Salts with Carbon Additives
Noboru Itouyama,Hiroto Habu +1 more
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Performances of a Research CFR Octane Rating Unit Engine and Dacia Single Cylinder SI Engine Ignited by a LASER System
Bogdan George Done,Ion Copae +1 more
TL;DR: In this article, a LASER medium Nd:YAG/Cr4+:Y AG ceramic structure made up of a 8.0mm long, 1.0-mm at.
References
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Journal ArticleDOI
Laser-induced spark ignition fundamental and applications
TL;DR: In this paper, the authors 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.
Journal ArticleDOI
Laser versus conventional ignition of flames
TL;DR: A critical review and comparison of the initiation of combustion processes by conventional electric spark or thermal means with laser sources is presented in this paper, where a description of the fundamentals of ignition processes is used as the basis for interpretation of experimental and theoretical studies of laser ignition.
Journal ArticleDOI
Laser ignited engines: progress, challenges and prospects
Geoff Dearden,Tom Shenton +1 more
TL;DR: Progress made in recent research on laser ignited IC engines is outlined, the potential advantages and control opportunities are discussed, the challenges faced and prospects for its future implementation are considered and how LI can be used to improve control of the engine is indicated.
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Laser Ignition of Methane-Air Mixtures at High Pressures and Diagnostics
Herbert Kopecek,Soren Charareh,Maximilian Lackner,Christian Forsich,Franz Winter,Johann Klausner,Gu¨nther Herdin,Martin Weinrotter,Ernst Wintner +8 more
Abstract: Methane-air mixtures at high fill pressures up to 30 bar and high temperatures up to 200 °C were ignited in a high pressure chamber with automated fill control by a 5 ns pulsed Nd:YAG laser at 1064 nm wavelength. Both, the minimum input laser pulse energy for ignition and the transmitted fraction of energy through the generated plasma were measured as a function of the air/fuel-equivalence ratio (λ). The lean side ignition limit of methane-air mixtures was found to be λ = 2.4. However, only λ < 2.2 seems to be practically usable. As a comparison, the limit for conventional spark plug ignition of commercial natural gas engines is λ = 1.8. Only with excessive efforts λ = 2.0 can be spark-ignited. The transmitted pulse shape through the laser-generated plasma was determined temporally as well as its dependence on input laser energy and properties of the specific gases interacting. For a first demonstration of the practical applicability of laser ignition, one cylinder of a 1 MW natural gas engine was ignited by a similar 5 ns pulsed Nd:YAG laser at 1064 nm. The engine worked successfully at λ = 1.8 for a first test period of 100 hours without any interruption due to window fouling and other disturbances. Lowest values for NOx emission were achieved at λ = 2.05 (NOx = 0.22 g/KWh). Three parameters obtained from accompanying spectroscopic measurements, namely water absorbance, flame emission and the gas inhomogeneity index have proven to be a powerful tool to judge laser-induced ignition of methane-air mixtures. The following effects were determined by the absorption spectroscopic technique: formation of water in the vicinity of the laser spark (semi-quantitative); characterization of ignition (ignition delay, incomplete ignition, failed ignition); homogeneity of the gas phase in the vicinity of the ignition and the progress of combustion.© 2003 ASME
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Ignition of an automobile engine by high-peak power Nd:YAG/Cr⁴⁺:YAG laser-spark devices.
TL;DR: Improved engine stability and decreased emissions of CO and HC were obtained for the engine that was run by laser sparks in comparison with classical ignition by electrical spark plugs.