Fluorescence-Based Method Designed for Quantitative Measurement of Fuel Film Thickness during Cold-Start of Engines
| Autor: | Lynn A. Melton, Jiemin Yang |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
chemistry.chemical_classification
Cold start (automotive) Materials science 010401 analytical chemistry Analytical chemistry 010501 environmental sciences 01 natural sciences Fluorescence 0104 chemical sciences Liquid fuel Hydrocarbon chemistry Range (aeronautics) Calibration Limiting oxygen concentration Saturation (chemistry) Instrumentation Spectroscopy 0105 earth and related environmental sciences |
| Zdroj: | Applied Spectroscopy. 54:565-574 |
| ISSN: | 1943-3530 0003-7028 |
| DOI: | 10.1366/0003702001949744 |
| Popis: | The liquid fuel that accumulates in the engine manifold and cylinders during cold start conditions is thought to contribute significantly to excess hydrocarbon emissions. Two fluorescent dopants, cyclohexanone and 2-methyl-cyclopentanone, have been tested for use as fluorescent markers for quantitative two-dimensional (2D) imaging of the thickness of automotive fuel films in the range 0-1 mm. These dopants are co-evaporative with synthetic automotive fuel and have fluorescence that is virtually independent of oxygen concentration equivalent to saturation under 5 atm air at temperatures of 20-200 C. Selection, calibration procedures, and (nonengine) demonstration laser-induced-fluorescence (LIF) imaging experiments are discussed. Index Headings: Fluorescence; Diagnostics; Engines; Liquid films; Cold start. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|