skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A Preliminary Investigation into the Mitigation of Plug-in Hybrid Electric Vehicle Tailpipe Emissions Through Supervisory Control Methods Part 1: Analytical Development of Energy Management Strategies

Abstract

Plug-in hybrid electric vehicle (PHEV) technologies have the potential for considerable petroleum consumption reductions, possibly at the expense of increased tailpipe emissions due to multiple 'cold' start events and improper use of the engine for PHEV specific operation. PHEVs operate predominantly as electric vehicles (EVs) with intermittent assist from the engine during high power demands. As a consequence, the engine can be subjected to multiple cold start events. These cold start events may have a significant impact on the tailpipe emissions due to degraded catalyst performance and starting the engine under less than ideal conditions. On current hybrid electric vehicles (HEVs), 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. The research is broken down into two (2) distinct phases, involving both analytical and experimental areas. Phase I of the research, addressed in this document, focuses on the design of a vehicle supervisory control system for a pre-transmission parallel PHEV powertrain architecture. A suitable control system architecture is created and implemented into a standard vehicle modeling tool (in this case, the Powertrain Systems Analysis Toolkit). Energy management strategies aremore » evaluated and implemented in a virtual environment for preliminary assessment of petroleum displacement benefits and rudimentary drivability issues. Engine cold start events are aggressively addressed in the development of this control system, which leads to enhanced pre-warming and energy-based engine warming algorithms that provide substantial reductions in tailpipe emissions over the baseline supervisory control strategy. The flexibility of the PHEV powertrain offers the potential for decreased emissions during any engine starting event through powertrain 'torque shaping' algorithms. The analytical work presented here is experimentally validated during Phase 2, the subject of a follow on paper.« less

Authors:
 [1];  [2];  [1]
  1. ORNL
  2. Argonne National Laboratory (ANL)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Power Electronics and Electric Machinery Research Facility
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
983132
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: 2010 SAE World Congress, Detroit, MI, USA, 20100413, 20100415
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; ALGORITHMS; ARCHITECTURE; CATALYSTS; CONTROL SYSTEMS; DESIGN; ENERGY MANAGEMENT; ENGINES; FLEXIBILITY; MITIGATION; PERFORMANCE; PETROLEUM; POWER DEMAND; SIMULATION; SYSTEMS ANALYSIS; TORQUE

Citation Formats

Smith, David E, Lohse-Busch, Henning, and Irick, David Kim. A Preliminary Investigation into the Mitigation of Plug-in Hybrid Electric Vehicle Tailpipe Emissions Through Supervisory Control Methods Part 1: Analytical Development of Energy Management Strategies. United States: N. p., 2010. Web.
Smith, David E, Lohse-Busch, Henning, & Irick, David Kim. A Preliminary Investigation into the Mitigation of Plug-in Hybrid Electric Vehicle Tailpipe Emissions Through Supervisory Control Methods Part 1: Analytical Development of Energy Management Strategies. United States.
Smith, David E, Lohse-Busch, Henning, and Irick, David Kim. 2010. "A Preliminary Investigation into the Mitigation of Plug-in Hybrid Electric Vehicle Tailpipe Emissions Through Supervisory Control Methods Part 1: Analytical Development of Energy Management Strategies". United States.
@article{osti_983132,
title = {A Preliminary Investigation into the Mitigation of Plug-in Hybrid Electric Vehicle Tailpipe Emissions Through Supervisory Control Methods Part 1: Analytical Development of Energy Management Strategies},
author = {Smith, David E and Lohse-Busch, Henning and Irick, David Kim},
abstractNote = {Plug-in hybrid electric vehicle (PHEV) technologies have the potential for considerable petroleum consumption reductions, possibly at the expense of increased tailpipe emissions due to multiple 'cold' start events and improper use of the engine for PHEV specific operation. PHEVs operate predominantly as electric vehicles (EVs) with intermittent assist from the engine during high power demands. As a consequence, the engine can be subjected to multiple cold start events. These cold start events may have a significant impact on the tailpipe emissions due to degraded catalyst performance and starting the engine under less than ideal conditions. On current hybrid electric vehicles (HEVs), 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. The research is broken down into two (2) distinct phases, involving both analytical and experimental areas. Phase I of the research, addressed in this document, focuses on the design of a vehicle supervisory control system for a pre-transmission parallel PHEV powertrain architecture. A suitable control system architecture is created and implemented into a standard vehicle modeling tool (in this case, the Powertrain Systems Analysis Toolkit). Energy management strategies are evaluated and implemented in a virtual environment for preliminary assessment of petroleum displacement benefits and rudimentary drivability issues. Engine cold start events are aggressively addressed in the development of this control system, which leads to enhanced pre-warming and energy-based engine warming algorithms that provide substantial reductions in tailpipe emissions over the baseline supervisory control strategy. The flexibility of the PHEV powertrain offers the potential for decreased emissions during any engine starting event through powertrain 'torque shaping' algorithms. The analytical work presented here is experimentally validated during Phase 2, the subject of a follow on paper.},
doi = {},
url = {https://www.osti.gov/biblio/983132}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 2010},
month = {Fri Jan 01 00:00:00 EST 2010}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: