Certification Procedures for Advanced Technology Heavy-Duty Vehicles: Evaluating Test Methods and Opportunities for Global Alignment

Event
SAE 2012 Commercial Vehicle Engineering Congress
Authors Abstract
Content
Advanced technology heavy-duty vehicles such as hybrids present unique regulatory challenges. Hybrids employ an additional energy source in conjunction with an internal combustion engine for motive power, and the interactions between the engine and the hybrid components affect criteria pollutant emissions and fuel consumption. Often, an engine installed in a hybrid vehicle will operate very differently from the same engine installed in a conventional vehicle driven over the same route. One of the difficulties in integrating vehicles such as hybrids into regulatory programs is developing the proper certification test procedures for criteria pollutant and greenhouse gas (GHG) emissions so that these advanced technologies and vehicles are evaluated fairly and consistently as compared to their conventional counterparts. This paper seeks to inform policy makers of the alternatives for moving toward more holistic approaches to testing and certifying powertrain systems and complete vehicles. The first part of the paper describes and compares the options for testing the emissions and fuel efficiency performance of heavy-duty vehicles from a technical perspective. The paper then goes on to discuss some of the specific regulatory challenges posed by the fact there are a myriad of test method and test cycle options and combinations that could potentially be used in a certification program. Finally, the paper concludes with an examination of the opportunities and challenges of developing a “world harmonized” certification procedure for heavy-duty hybrid and advanced technology vehicles.
Meta TagsDetails
DOI
https://doi.org/10.4271/2012-01-1986
Pages
12
Citation
Sharpe, B., and Lowell, D., "Certification Procedures for Advanced Technology Heavy-Duty Vehicles: Evaluating Test Methods and Opportunities for Global Alignment," Commercial Vehicles 5(2):534-545, 2012, https://doi.org/10.4271/2012-01-1986.
Additional Details
Publisher
Published
Sep 24, 2012
Product Code
2012-01-1986
Content Type
Journal Article
Language
English