Sulfate Emission from Diesel Engine

Abstract

Sulfate emission from a direct injection type diesel engine, 3.6 1 of displacement, was measured on an engine dynamometer using a dilution tunnel. Emission values, about 2-13 mg/m³ and 20-50 mg/km, were obtained on the basis of concentration and mass, respectively, which are considered to contribute to ambient air quality along a road considerably. Sulfate conversion was found to be 1-2% of sulfur in fuel, showing the maximum value at about 2.2 of excess air ratio. The measurement in this study seem to be reasonable by taking relatively high sulfur content (0.466 wt%) in used fuel into consideration.