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Application of Diesel Oxidation Catalyst and Diesel Particulate Filter for Diesel Engine Powered Non-Road Machines
In this paper, applications of the platinum group metal (pgm)-based diesel oxidation catalyst (DOC) and diesel particulate filter (DPF) technologies for John Deere Interim Tier 4 non-road machines are presented. The same criteria apply to EU Stage III B regulations. The design and
performance of engine aftertreatment systems are discussed in detail, and a few key performance characteristics of DOC-DPF systems are addressed. Significant passive soot oxidation was observed. Model based controls were found to properly account for passive regenerations of the DPF and could
be used to schedule active regenerations automatically. Active regenerations were transparent to operators. Tight DPF inlet temperature control and engine exhaust temperature management were found to be key for successful active DPF regenerations. The average fuel consumption for active regenerations
was estimated by a simple energy balance model. The emission performance of a DOC-DPF system under normal and active regenerations is summarised, and ash accumulation and DPF pressure drop impact are analysed.
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Document Type: Research Article
Publication date: July 1, 2012
Johnson Matthey's journal of research on the platinum group metals and developments in their application in industry from 1957-2014. It has now been renamed the Johnson Matthey Technology Review
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