Spark ignition engine exhaust system

Details Spark ignition engine exhaust system Spark ignition engine exhaust system

1995-02-21

1996-05-28

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

60284, 60297, 60299, F01N 328

Patent

active

055199933

ABSTRACT:
An exhaust system for a spark ignition engine on an automotive vehicle including an exhaust filter disposed downstream of a spark ignition engine for condensing hydrocarbons in exhaust gases from the engine during a first time period after start of the engine, a bypass structure for bypassing at least a portion of exhaust gases around the exhaust filter to heat the exhaust filter during a second time period after the first time period and evaporate the condensed hydrocarbons, and a catalytic converter disposed downstream of the exhaust filter to oxidize the evaporated hydrocarbons and reduce NO.sub.x in exhaust gases passing therethrough. A method is also provided.

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