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Absolute NO and OH Concentrations During Diesel Combustion Process by Multiwavelength Absorption Spectroscopy
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 04, 2002 by SAE International in United States
Annotation ability available
Conventional methods to measure gas concentrations and, in particular, NO are typically based on sampling by valve, sample treatment and subsequent analysis. These methods suffer low spatial and temporal resolution. The introduction of high energy lasers in combination with fast detection systems allowed to detect the NO distribution inside optically accessible Diesel engines. In this paper, a high spatial and temporal resolution in-situ technique based on ultraviolet - visible absorption spectroscopy is proposed. The characterization of the combustion process by the detection of gaseous compounds from the start of combustion until the exhaust phase was performed. In particular, this technique allows the simultaneous detection of NO and OH absolute concentrations inside an optically accessible Diesel combustion chamber. Using a numerical procedure for retrieving of optical data, supported by the knowledge of local temperature, the temporal evolution and spatial distributions of OH radical and NO were evaluated.
CitationCorcione, F., Merola, S., and Vaglieco, B., "Absolute NO and OH Concentrations During Diesel Combustion Process by Multiwavelength Absorption Spectroscopy," SAE Technical Paper 2002-01-0892, 2002, https://doi.org/10.4271/2002-01-0892.
Compression Ignition Combustion and In-Cylinder Diesel Particulates and Nox Control
Number: SP-1698 ; Published: 2002-03-04
Number: SP-1698 ; Published: 2002-03-04
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