Open AccessExhaust composition at laser ignition of combustible gas mixtures under controlled conditions
Author(s) -
Y. V. Anishchanka,
E. Yu. Loktionov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1385/1/012061
Subject(s) - ignition system , gas composition , laser , methane , materials science , exhaust gas , piston (optics) , autoignition temperature , composition (language) , range (aeronautics) , lean burn , laser ignition , combustion , environmental science , analytical chemistry (journal) , chemistry , thermodynamics , environmental chemistry , composite material , nox , optics , organic chemistry , physics , linguistics , philosophy , wavefront
One of the main advantages of laser ignition is the ability to ignite lean combustible mixtures, resulting in obvious economy and reduction of harmful emissions, primarily NO x . Experimental data on exhaust composition are presented in the literature very poorly. As a rule, the studies were not of a systematic nature, considered only very specific conditions of combustible mixtures exposure and composition (mainly methane-air), and were obtained for experimental piston engines, the design and operational features of which could significantly affect the result. We suggested that in order to obtain a starting point for further optimization, a study of exhaust composition should be carried out under conditions of minimal impact of the engine design. For this purpose, an experimental stand was created, which allows to investigate the laser ignition of combustible mixtures of different composition in wide pressures range. We studied the laser ignition of gas mixtures based on butane with fuel-air coefficients ϕ ∼ 0.8 – 1.2, in pressure range p ∼ 1 – 3 bar, ignited by radiation of the the nanosecond Nd:YAG laser. The exhaust composition was analyzed by O 2 , CH, CO, CO 2 , NO x . Correspondence of the obtained results known from other experimental and theoretical works is analyzed.