cfr_sections: 40:40:25.0.1.1.2.1.1.47

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section_id	title_number	title_name	chapter	subchapter	part_number	part_name	subpart	subpart_name	section_number	section_heading	agency	authority	source_citation	amendment_citations	full_text
40:40:25.0.1.1.2.1.1.47	40	Protection of Environment	I	C	86	PART 86—CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND ENGINES	A	Subpart A—General Provisions for Heavy-Duty Engines and Heavy-Duty Vehicles	86.088-2	§ 86.088-2 Definitions.	EPA	(Secs. 202, 203, 206, 207, 208, 301a, Clean Air Act, as amended; 42 U.S.C. 7521, 7522, 7525, 7541, 7542, 7601a)	42 FR 32907, June 28, 1977, unless otherwise noted.	[50 FR 10648, Mar. 15, 1985]	The definitions in § 86.085-2 remain effective. The definitions in this section apply beginning with the 1988 model year. Composite NO X standard, for a manufacturer which elects to average light-duty trucks subject to the NO X standard of § 86.088-9(a)(iii)(A) together with those subject to the NO X standard of § 86.088-9(a)(iii)(B) in the light-duty truck NO X averaging program, means that standard calculated according to the following equation and rounded to the nearest one-tenth gram per mile: Where: PROD A = The manufacturer's total light-duty truck production for those engine families subject to the standard of § 86.088-9(a)(iii)(A) and included in the average for a given model year, STD A = The NO X standard of § 86.088-9(a)(iii)(A), PROD B = The manufacturer's total light-duty truck production for those engine families subject to the standard of § 86.088-9(a)(iii)(B) and included in the average for a given model year, and STD B = The NO X standard of § 86.088-9(a)(iii)(B). Where: PROD A = The manufacturer's total light-duty truck production for those engine families subject to the standard of § 86.088-9(a)(iii)(A) and included in the average for a given model year, STD A = The NO X standard of § 86.088-9(a)(iii)(A), PROD B = The manufacturer's total light-duty truck production for those engine families subject to the standard of § 86.088-9(a)(iii)(B) and included in the average for a given model year, and STD B = The NO X standard of § 86.088-9(a)(iii)(B). Critical emission-related components are those components which are designed primarily for emission control, or whose failure may result in a significant increase in emissions accompanied by no significant impairment (or perhaps even an improvement) in performance, driveability, and/or fuel economy as determined by the Administrator. Critical emission-related maintenance means that maintenance to be performed on critical emission-related components. Emission-related maintenance means that maintenance which does substantially affect emissions or which is likely to affect the emissions deterioration of the vehicle or engine during normal in-use operation, even if the maintenance is performed at some time other than that which is recommended. Family NO X emission limit means the NO X emission level to which an engine family is certified in the light-duty truck NO X averaging program, expressed to one-tenth of a gram per mile accuracy. Non-emission-related maintenance means that maintenance which does not substantially affect emissions and which does not have a lasting effect on the emissions deterioration of the vehicle or engine during normal in-use operation once the maintenance is performed. Production-weighted NO X average means the manufacturer's production-weighted average NO X emission level, for certification purposes, of all of its light-duty truck engine families included in the NO X averaging program. It is calculated at the end of the model year by multiplying each family NO X emission limit by its respective production, summing those terms, and dividing the sum by the total production of the effected families. Those vehicles produced for sale in California or at high altitude shall each be averaged separately from those produced for sale in any other area. Production-weighted particulate average means the manufacturer's production-weighted average particulate emission level, for certification purposes, of all of its diesel engine families included in the particulate averaging program. It is calculated at the end of the model year by multiplying each family particulate emission limit by its respective production, summing those terms, and dividing the sum by the total production of the effected families. Those vehicles produced for sale in California or at high altitude shall each be averaged separately from those produced for sale in any other area.