1981-02-01

Measurements of Hydrocarbon Concentrations in the Exhaust Products from a Spherical Combustion Bomb 810148

Total hydrocarbon concentrations in the exhaust products from a constant volume heated spherical combustion bomb have been measured using a flame ionization detector. Results were obtained for methane-air and propane-air mixtures as a function of equivalence ratio, initial pressure, wall temperature and inert gas diluent fraction. Although an effort was made to eliminate all crevice volumes and wall contamination, the results indicate that at initial pressures greater than 1 atmosphere, most of the hydrocarbon came from a crevice which was not perfectly sealed. At initial pressures less than 1 atmosphere, it was possible to correct for this and obtain an estimate of the hydrocarbon mass in the quench layer. For an equivalence ratio of unity and no diluent, the hydrocarbon mass per unit wall area was ≤0.02 μg/cm2. This is only 2% of the value predicted by a theorectical model used to correlate standoff distances on a flat flame burner and suggests virtually complete post-quench oxidation of the quench layer as suggested by Lavoie and co-workers. For nonzero diluent fractions, the wall hydrocarbon concentration increased substantially.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

A Model for Absorption and Desorption of Fuel Vapour by Cylinder Lubricating Oil Films and Its Contribution to Hydrocarbon Emissions

830652

View Details

TECHNICAL PAPER

Correlations of Combustion Data for S. I. Engine Calculations - Laminar Flame Speed, Quench Distance and Global Reaction Rates

780229

View Details

TECHNICAL PAPER

Chemical Kinetics Study on Effect of Pressure and Fuel, O2 and N2 Molar Concentrations on Hydrocarbon Ignition Process

2012-01-1113

View Details

X