[Code of Federal Regulations]
[Title 40, Volume 17]
[Revised as of July 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR86.708-98]
[Page 52-53]
TITLE 40--PROTECTION OF ENVIRONMENT
CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
PART 86--CONTROL OF EMISSIONS FROM NEW AND IN-USE HIGHWAY VEHICLES AND
ENGINES (CONTINUED)--Table of Contents
Subpart H--General Provisions for In-Use Emission Regulations for 1994
and Later Model Year Light-Duty Vehicles and Light-Duty Trucks
Sec. 86.708-98 In-use emission standards for 1998 and later model year
light-duty vehicles.
Section 86.708-98 includes text that specifies requirements that
differ from Sec. 86.090-8 of subpart A of this part. Where a paragraph
in Sec. 86.090-8 is identical and applicable to Sec. 86.708-98, this may
be indicated by specifying the corresponding paragraph and the statement
``[Reserved]. For guidance see Sec. 86.090-8.'' Where a corresponding
paragraph of Sec. 86.090-8 is not applicable, this is indicated by the
statement ``[Reserved].''
(a)(1)(i) In-use exhaust emissions from 1998 and later model year
light-duty vehicles shall meet all standards in tables H98-1 and H98-2
in the rows designated with the applicable fuel type.
Table H98-1--Intermediate Useful Life \1\ Standards (g/mi) for Light-Duty Vehicles
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Fuel THC NMHC THCE NMHCE CO NOX PM
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Gasoline........................................... 0.41 0.25 ...... ........... 3.4 0.4 0.08
Diesel............................................. 0.41 0.25 ...... ........... 3.4 1.0 0.08
Methanol........................................... ...... ...... 0.41 0.25 3.4 0.4 0.08
Natural Gas........................................ ...... 0.25 ...... ........... 3.4 0.4 0.08
LPG................................................ 0.41 0.25 ...... ........... 3.4 0.4 0.08
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\1\ The applicable useful life is 5 years or 50,000 miles, whichever first occurs.
[[Page 53]]
Table H98-2--Full Useful Life \1\ Standards (g/mi) for Light-Duty Vehicles
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Fuel THC NMHC THCE NMHCE CO NOX PM
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Gasoline........................................... ...... 0.31 ...... ........... 4.2 0.6 0.10
Diesel............................................. ...... 0.31 ...... ........... 4.2 1.25 0.10
Methanol........................................... ...... ...... ...... 0.31 4.2 0.6 0.10
Natural Gas........................................ ...... 0.31 ...... ........... 4.2 0.6 0.10
LPG................................................ ...... 0.31 ...... ........... 4.2 0.6 0.10
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\1\ The applicable useful life is 10 years or 100,000 miles, whichever first occurs, except that no enforcement
testing will be done beyond 7 years or 75,000 miles, whichever first occurs.
(ii)(A) Vehicles subject to the standards of paragraph (a)(1)(i) of
this section shall be all actual U.S. sales of light-duty vehicles of
the applicable model year by a manufacturer.
(B) A manufacturer cannot use one set of engine families to meet its
in-use intermediate useful life standards and another to meet its in-use
full useful life standards. The same families which are used to meet the
intermediate useful life standards will be required without deviation to
meet the corresponding full useful life standards.
(iii) CST emissions from gasoline-fueled Otto-cycle light-duty
vehicles measured and calculated in accordance with subpart O of this
part may not exceed the standards listed in paragraphs (a)(1)(iii) (A)
and (B) of this section.
(A) Hydrocarbons: 220 ppm as hexane.
(B) Carbon monoxide: 1.2 percent.
(2) The standards set forth in paragraph (a)(1) of this section
refer to the exhaust emitted over a driving schedule as set forth in
subpart B of this part and measured and calculated in accordance with
those procedures. The test weight basis for light-duty vehicles, for the
purposes of determining equivalent test weight as prescribed in
Sec. 86.129-94, shall be loaded vehicle weight.
(3) The standards set forth in paragraph (a)(1)(iii) of this section
refer to the exhaust emitted during the CST as set forth in subpart O of
this part and measured and calculated in accordance with those
provisions.
(b) The provisions of Sec. 86.090-8 (b) through (h) of subpart A of
this part apply to this section. The provisions of Sec. 86.096-8 (i)
through (j) of subpart A of this part apply to this section.
[56 FR 25781, June 5, 1991, as amended at 58 FR 58424, Nov. 1, 1993; 59
FR 33913, July 1, 1994; 59 FR 48516, Sept. 21, 1994]