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Title: Method of treating emissions of a hybrid vehicle with a hydrocarbon absorber and a catalyst bypass system

A method of treating emissions from an internal combustion engine of a hybrid vehicle includes directing a flow of air created by the internal combustion engine when the internal combustion engine is spinning but not being fueled through a hydrocarbon absorber to collect hydrocarbons within the flow of air. When the hydrocarbon absorber is full and unable to collect additional hydrocarbons, the flow of air is directed through an electrically heated catalyst to treat the flow of air and remove the hydrocarbons. When the hydrocarbon absorber is not full and able to collect additional hydrocarbons, the flow of air is directed through a bypass path that bypasses the electrically heated catalyst to conserve the thermal energy stored within the electrically heated catalyst.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
1117706
Report Number(s):
8,627,654
13/196,263
DOE Contract Number:
FC26-08NT04386
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Aug 02
Research Org:
GM Global Technology Operations LLC (Detroit, MI)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS