Emissions control

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Waste gas purifier

Reexamination Certificate

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Details

C422S171000, C422S177000, C422S180000, C060S274000, C060S377000, C060S280000, C060S292000, C060S605200, C060S602000, C123S568120

Reexamination Certificate

active

10018520

ABSTRACT:
A diesel engine (1) has an exhaust system (4) and an oxidation catalyst (5a). Exhaust gas for recirculation is taken through an intake pipe (6) downstream of the catalyst, and preferably upstream of a filter (5b) for soot. The recirculated gases are passed through a cooler (7) upstream of the EGR valve (8). Good removal of soot and NOxis achieved even at low exhaust gas temperature.

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