part_subject: "CONTROL OF EMISSIONS FROM SPARK-IGNITION PROPULSION MARINE ENGINES AND VESSELS"
subpart_code: "H"
subpart_subject: "Averaging, Banking, and Trading for Certification"
section_number: "1045.705"
section_subject: "How do I generate and calculate exhaust emission credits?"
cfr_reference: "40 CFR 1045.705"
title_name: "Title 40"
title_subject: "Protection of Environment"
parts_covered: "Parts 1000 to 1059"
revised_date: "Revised as of July 1, 2017"
publication_date: "As of July 1, 2017"
contains_description: "Containing a codification of documents of general applicability and future effect"
publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"
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The provisions of this section apply for calculating exhaust emission credits for HC + NOX or CO. You may generate exhaust emission credits only if you are a certifying engine manufacturer.
(a)For each participating family, calculate positive or negative emission credits relative to the otherwise applicable emission standard. Calculate positive emission credits for a family that has an FEL below the standard. Calculate negative emission credits for a family that has an FEL above the standard. Sum your positive and negative credits for the model year before rounding. Round the sum of emission credits to the nearest kilogram (kg) using consistent units throughout the following equation: