Research and Development for Dust Removal on Diesel Engine (Part-1)

—Dust Properties and Filter Element Characteristics—

Abstract

We have been developing a soot removing system for a diesel engine emission.
This system, used granular filter, is set in a exhaust gas manifold, and soot is collected and burned continuously during engine running.
In this paper, the removing conception, and diesel emission constituent, soot characteristic and results of granular characteristics test are reported.
Results of this research are summarized below.
(1) . The emission rate of soot for diesel engines is about 100mg/Nm³., and depends on used fuel properties.
(2) . Properties of soot vary with sulfur content of used fuel.
(3) . A calorific value and a ignition temperature point of soot become high with carbon content.
(4) . When mechanical and thermal strength, density and compact installation are considered, silica-alumina, for example a mullite ball is suitable as a granular.
(5) . This trapping rate of granular element is hight.
Soot is burned by heating air at 600°C, and the granular is renewed.