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Document Title Future Heavy-Duty GHG Test Procedure Considerations
Reference Number HDH-13-12
Date
29 Jul 2013
Summary Overview of current US Environmental Protection Agency heavy-duty hybrid powerpack testing activites.
Source(s) US EPA
Rulemaking Area(s) Heavy-duty Hybrids (HDH) and GTR No. 4 WHDC
Meeting(s)
Downloads
UNECE server .pdf format
Excerpts from session reports related to this document
HDH | Session 13 | 21-22 Mar 2013

Mr. Sanchez (EPA) gave an overview of the current EPA activities.

He emphasized that transmissions are becoming more important in the evaluation of hybrid vehicles. A post-transmission powerpack method therefore is suitable test method. He indicated that EPA will give their input to the HDH drafting group. EPA is willing to test within their internal programs the WHVC with slopes, but powerpack validation will likely be used instead of chassis dyno validation.