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To reduce particulate matter, a Diesel Particulate Filter
(DPF) captures soot and larger sulfate particles in a series
of ceramic honeycomb channels. Exhaust gases are directed
into a cordierite or silicon carbide molded substrate
with closed ends. Gas passes through the porous material,
and the particulates are trapped and accumulate on the
channel walls. As is used currently, an Oxidizing Catalyst
will control hydrocarbons.
- Captures soot and sulfate particles
- Oxidizing Catalyst controls hydrocarbons
- Exterior engine and exhaust temperatures same as pre-2007 models during the regeneration process
- Harmless ash is left as residue
- Automatic or driver-initiated process
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