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Maintaining low NOx emissions over the operating range of diesel engines continues to be a major issue. However, quantitative measurements of nitric oxide (NO) are lacking especially in the core of diesel jets even if optical measurement techniques like laser-induced fluorescence (LIF) are used. NO may be present in the jet core due to enhanced fuel/air premixing. Close to the flame axis, severe light...
Quantitative spatially resolved measurements of temperature and species are lacking particularly in the core of combusting diesel jets. Major problems are light attenuation and interfering light emissions. However, these factors are reduced in non-sooting diesel-like jets, as demonstrated in the present work, because light is not attenuated by soot and interfering LIF (laser-induced fluorescence)...
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