[Code of Federal Regulations]
[Title 40, Volume 31]
[Revised as of July 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR1051.107]
[Page 618-619]
TITLE 40--PROTECTION OF ENVIRONMENT
CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
PART 1051_CONTROL OF EMISSIONS FROM RECREATIONAL ENGINES AND VEHICLES
--Table of Contents
Subpart B_Emission Standards and Related Requirements
Sec. 1051.107 What are the exhaust emission standards for all-terrain
vehicles (ATVs) and offroad utility vehicles?
This section specifies the exhaust emission standards that apply to
ATVs. As is described in Sec. 1051.1(a)(4), offroad utility vehicles
that are subject to this part are subject to these same standards.
(a) Apply the exhaust emission standards in this section by model
year. Measure emissions with the ATV test procedures in subpart F of
this part.
(1) Follow Table 1 of this section for exhaust emission standards.
You may generate or use emission credits under the averaging, banking,
and trading (ABT) program for HC+NOX emissions, as described
in subpart H of this part. This requires that you specify a family
emission limit for each pollutant you include in the ABT program for
each engine family. These family emission limits serve as the emission
standards for the engine family with respect to all required testing
instead of the standards specified in this section. An engine family
meets emission standards even if its family emission limit is higher
than the standard, as long as you show that the whole averaging set of
applicable engine families meets the applicable emission standards using
emission credits, and the vehicles within the family meet the family
emission limit. Table 1 also shows the maximum value you may specify for
a family emission limit. The phase-in values in the table specify the
percentage of your total U.S.-directed production that must comply with
the emission standards for those model years.
Calculate this compliance percentage based on a simple count of your
U.S.-directed production units within each certified engine family
compared with a simple count of your total U.S.-directed production
units. This applies to your total production of ATVs and offroad utility
vehicles that are subject to the standards of this part; including
[[Page 619]]
both ATVs and offroad utility vehicles subject to the standards of this
section and ATVs and offroad utility vehicles certified to the standards
of other sections in this part 1051 (such as Sec. 1051.615, but not
including vehicles certified under other parts in this chapter (such as
40 CFR part 90). Table 1 follows:
Table 1 of Sec. 1051.107--Exhaust Emission Standards for ATVs (g/km)
--------------------------------------------------------------------------------------------------------------------------------------------------------
Emission standards Maximum allowable family
Phase-in -------------------------------- emission limits
Phase Model year (percent) -------------------------------
HC+NOX CO HC+NOX CO
--------------------------------------------------------------------------------------------------------------------------------------------------------
Phase 1................................... 2006........................ 50 1.5 35 20.0 ..............
2007 and later.............. 100 1.5 35 20.0 ..............
--------------------------------------------------------------------------------------------------------------------------------------------------------
(2) You may certify ATVs with engines that have total displacement
of less than 100 cc to the exhaust emission standards in Sec. 1051.615
instead of certifying them to the exhaust emission standards of this
section. Count all such vehicles in the phase-in (percent) requirements
of this section.
(b) The exhaust emission standards in this section apply for ATVs
using the fuel type on which they are designed to operate. You must meet
the numerical emission standards for hydrocarbons in this section based
on the following types of hydrocarbon emissions for ATVs powered by the
following fuels:
(1) Gasoline- and LPG-fueled ATVs: THC emissions.
(2) Natural gas-fueled ATVs: NMHC emissions.
(3) Alcohol-fueled ATVs: THCE emissions.
(c) Your ATVs must meet emission standards over their full useful
life. For ATVs with engines that have total displacement of 100 cc or
greater, the minimum useful life is 10,000 kilometers, 1000 hours of
engine operation, or five years, whichever comes first. For ATVs with
engines that have total displacement of less than 100 cc, the minimum
useful life is 5,000 kilometers, 500 hours of engine operation, or five
years, whichever comes first. You must specify a longer useful life for
the engine family in terms of kilometers and hours if the average
service life of your vehicles is longer than the minimum value, as
follows:
(1) Except as allowed by paragraph (c)(2) of this section, your
useful life (in kilometers) may not be less than either of the
following:
(i) Your projected operating life from advertisements or other
marketing materials for any vehicles in the engine family.
(ii) Your basic mechanical warranty for any engines in the engine
family.
(2) Your useful life may be based on the average service life of
vehicles in the engine family if you show that the average service life
is less than the useful life required by paragraph (c)(1) of this
section, but more than the minimum useful life (10,000 kilometers or
1,000 hours of engine operation). In determining the actual average
service life of vehicles in an engine family, we will consider all
available information and analyses. Survey data is allowed but not
required to make this showing.
[67 FR 68347, Nov. 8, 2002, as amended at 70 FR 40488, July 13, 2005]