part_subject: "CONTROL OF EMISSIONS FROM NONROAD SPARK-IGNITION ENGINES AT OR BELOW 19 KILOWATTS"
subpart_code: "D"
subpart_subject: "Emission Test Equipment Provisions"
section_number: "90.302"
section_subject: "Definitions."
cfr_reference: "40 CFR 90.302"
title_name: "Title 40"
title_subject: "Protection of Environment"
parts_covered: "Parts 87 to 95"
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 definitions in § 90.3 apply to this subpart. The following definitions also apply to this subpart.
Intermediate speed means the engine speed which is 85 percent of the rated speed.
Natural gas means a fuel whose primary constituent is methane.
Rated speed means the speed at which the manufacturer specifies the maximum rated power of an engine.