A Study of Ash Deposition in Diesel Particulate Filter for Construction Machinery

Abstract

The purpose of this study is to discuss the influence of operating condition for Ash deposition in Diesel Particulate Filter (DPF) for construction machinery, based on the experimental results of the long run (non-accelerated) engine bench test. Experimental results show that bulk density of bottom deposited Ash is changed related to regeneration interval. Additionally, results show that it is changed similarly when engine operating condition changed to higher duty ratio. Based on these results, the mechanism of bulk density change of bottom deposited Ash is considered. As a result, it is suggested that the mass balance between Ash load and Soot load at the regeneration is an important parameter to explain the mechanism of bulk density change of bottom deposited Ash.