Multiquip DCA45SSIU4F - Manual (Page 40)

page 40 — dca45SSIU4F 60 hz generator • operatIon and partS manUal — rev. #0 (09/09/14)
MaiNteNaNCe
emISSIon control
The emission control system employed with the Isuzu
4LE2X diesel engine consist of a Diesel Oxidation Catalyst
(DOC).
This device oxidizes large amounts of harmful nitrogen
oxides (NOx) and particulate matter (PM) which are emitted
by diesel engines. These exhaust emissions pose serious
environmental and health risks. No maintenance or service
is required for the DOC device used on this generator.
diesel oxidation catalyst (doc)
The DOC does not filter particles it oxidizes them. This
catalyst (honeycomb like structure) uses a chemical
process to break down pollutants in the exhaust stream
into less harmful components. In general this catalyst
collects/burns accumulated particulates. The DOC contains
palladium and platinum which serve as a catalysts to oxidize
hydrocarbons and carbon monoxide.