Patent ID: 8141351
Filing Date: 2012-03-27
Classification: F01N

Abstract:
1. A pre-catalyst device, for use in a diesel engine exhaust system, comprising: a housing having an inlet and an outlet, the housing configured with a flow path between the inlet and outlet such that engine exhaust may flow through the inlet and outlet; a plurality of channels disposed within the flow path, each of the channels including a wall structure such that the plurality of channels configured as multiple distinct openings at the inlet and extending through the housing to the outlet, the housing configured to be disposed upstream of a diesel main aftertreatment device of an engine exhaust system; and an oxidizing material disposed on surfaces of the wall structure of the plurality of channels, the oxidizing material configured to oxidize engine exhaust before the engine exhaust reaches the diesel main aftertreatment device of the engine exhaust system, wherein the housing of the pre-catalyst device is configured to be separate and distinct from a housing of the diesel main aftertreatment device.