Quantitative In-Cylinder NO LIF Measurements with a KrF Excimer Laser Applied to a Mass-Production SI Engine Fueled with Isooctane and Regular Gasoline

Knapp, Michael; Luczak, Andreas; Beushausen, Volker; Hentschel, W.; Mänz, P.; Andresen, Peter L.

doi:10.4271/970824

Cited by 14 publications

(5 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6͒ has been shown to give full access to the combustion chamber, even at peak pressures, in spark-ignited engines. [7][8][9] Practical considerations of the advantages and disadvantages of two NO A-X excitation schemes are discussed in Refs. 4, 9, and 10 and are not considered further here.…”

Section: Introductionmentioning

confidence: 99%

Quantification of NO A–X(0, 2) laser-induced fluorescence: investigation of calibration and collisional influences in high-pressure flames

Schulz¹,

Sick²,

Meier³

et al. 1999

Appl. Opt.

View full text Add to dashboard Cite

Laser-induced-fluorescence techniques have been used successfully for quantitative two-dimensional measurements of nitric oxide. NO A-X(0, 2) excitation at 248 nm recently found applications in internal-combustion engines. We assess the collisional processes that influence quantification of signal intensities in terms of saturation, rotational energy transfer, and line broadening, using laminar high-pressure methane/air and n-heptane/air flames at pressures as high as 80 bars (8 x 10(6) Pa). A calibration method that is applicable in technical combustion systems based on addition of NO to the burning flame is investigated for various air/fuel ratios and pressures and yields information about the influence of NO reburn processes.

show abstract

Section: Introductionmentioning

confidence: 99%

Quantification of NO A–X(0, 2) laser-induced fluorescence: investigation of calibration and collisional influences in high-pressure flames

Schulz¹,

Sick²,

Meier³

et al. 1999

Appl. Opt.

View full text Add to dashboard Cite

show abstract

“…76,77 Quantitative one-dimensional measurements were shown in a spark-ignition engine fueled with isooctane and regular gasoline. 78 The spectrograph detection used in these measurements enabled the assessment of Raman and LIF interferences as well as investigation of fluorescence trapping.…”

Section: A-x͑0 2͒ Excitationmentioning

confidence: 99%

Strategies for laser-induced fluorescence detection of nitric oxide in high-pressure flames III Comparison of A–X excitation schemes

et al. 2003

View full text Add to dashboard Cite

Laser-induced fluorescence (LIF) has proven a reliable technique for nitric oxide (NO) diagnostics in practical combustion systems. However, a wide variety of different excitation and detection strategies are proposed in the literature without giving clear guidelines of which strategies to use for a particular diagnostic situation. We give a brief review of the high-pressure NO LIF diagnostics literature and compare strategies for exciting selected transitions in the A-X(0, 0), (0, 1), and (0, 2) bands using a different detection bandpass. The strategies are compared in terms of NO LIF signal strength, attenuation of laser and signal light in the hot combustion gases, signal selectivity against LIF interference from O2 and CO2, and temperature and pressure sensitivity of the LIF signal. The discussion is based on spectroscopic measurements in laminar premixed methane-air flames at pressures between 1 and 60 bars and on NO and O2 LIF spectral simulations.

show abstract

“…The first applications were demonstrated in a spark-ignited square-piston engine fueled with propane [4]. More realistic configurations included engine operation with isooctane with multi-point [5,6] and direct injection [7][8][9]. One-dimensional measurements were performed in an engine fueled with regular gasoline [5].…”

Section: Introductionmentioning

confidence: 99%

“…More realistic configurations included engine operation with isooctane with multi-point [5,6] and direct injection [7][8][9]. One-dimensional measurements were performed in an engine fueled with regular gasoline [5]. Quantitative NO-LIF imaging was also performed in Diesel engines fueled with low-sooting [10] and commercial Diesel fuel [11].…”

Section: Introductionmentioning

confidence: 99%

Quantitative in-cylinder NO-LIF imaging in a realistic gasoline engine with spray-guided direct injection

Bessler

Hofmann

Zimmermann

et al. 2005

Proceedings of the Combustion Institute

View full text Add to dashboard Cite

Quantitative In-Cylinder NO LIF Measurements with a KrF Excimer Laser Applied to a Mass-Production SI Engine Fueled with Isooctane and Regular Gasoline

Cited by 14 publications

References 18 publications

Quantification of NO A–X(0, 2) laser-induced fluorescence: investigation of calibration and collisional influences in high-pressure flames

Quantification of NO A–X(0, 2) laser-induced fluorescence: investigation of calibration and collisional influences in high-pressure flames

Strategies for laser-induced fluorescence detection of nitric oxide in high-pressure flames III Comparison of A–X excitation schemes

Quantitative in-cylinder NO-LIF imaging in a realistic gasoline engine with spray-guided direct injection

Contact Info

Product

Resources

About