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Accession Number DE2013-1074428
Title PHEV Cold Start Emissions Management.
Publication Date Jan 2013
Media Count 9p
Personal Author N/A
Abstract Plug-in hybrid electric vehicles (PHEV) operate predominantly as electric vehicles (EV) with intermittent assist from the engine. As a consequence, the engine can be subjected to multiple cold start events. These cold start events have a significant impact on tailpipe emissions due to degraded catalyst performance and starting the engine under less than ideal conditions. On current conventional vehicles, the first cold start of the engine dictates whether or not the vehicle will pass federal emissions tests. PHEV operation compounds this problem due to infrequent, multiple engine cold starts. ORNL, in collaboration with the University of Tennessee, developed an Engine-In-the-Loop (EIL) test platform to investigate cold start emissions on a 2.0l Gasoline Turbocharged Direct Injection (GTDI) Ecotec engine coupled to a virtual series hybrid electric vehicle. The end-goal of this project is to demonstrate the benefits of coordinating engine and powertrain supervisory control strategies to minimize cold start emissions.
Keywords Catalysts
Cold starts
Control systems
Hybrid electric powered vehicles
Performance evaluation
Plug-in hybrid electric vehicle(PHEV)

Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 85H - Road Transportation
81B - Electric & Ion Propulsion
Corporate Author Oak Ridge National Lab., TN.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1321
Contract Number DE-AC05-00OR22725

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