§ 86.007-15 NOX and particulate averaging, trading, and banking for heavy-duty engines.
Section 86.007–15 includes text that specifies requirements that differ from § 86.004–15. Where a paragraph in § 86.004–15 is identical and applicable to § 86.007–15, this may be indicated by specifying the corresponding paragraph and the statement “[Reserved]. For guidance see § 86.004–15.”
(a)–(l) [Reserved]. For guidance see § 86.004–15.
(m) The following provisions apply for model year 2007 and later engines (including engines certified during years 2007–2009 under the phase-in provisions of § 86.007–11(g)(1), § 86.005–10(a), or § 86.008–10(f)(1)). These provisions apply instead of the provisions of paragraphs § 86.004–15 (a) through (k) to the extent that they are in conflict.
(1) Manufacturers of Otto-cycle engines may participate in an NMHC averaging, banking and trading program to show compliance with the standards specified in § 86.008–10. The generation and use of NMHC credits are subject to the same provisions in paragraphs § 86.004–15 (a) through (k) that apply for NOX plus NMHC credits, except as otherwise specified in this section.
(2) Credits are calculated as NOX or NMHC credits for engines certified to separate NOX and NMHC standards. NOX plus NMHC credits (including banked credits and credits that are generated during years 2007–2009 under the phase-in provisions of § 86.007–11(g)(1), § 86.005–10(a), or § 86.008–10(f)(1)) may be used to show compliance with 2007 or later NOX standards (NOX or NMHC standards for Otto-cycle engines), subject to an 0.8 discount factor (e.g., 100 grams of NOX plus NMHC credits is equivalent to 80 grams of NOX credits).