[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: 40CFR86.608-88]
[Page 18-20]
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 G--Selective Enforcement Auditing of New Light-Duty Vehicles
Sec. 86.608-88 Test procedures.
(a) The prescribed test procedures are contained in subpart B of
this part 86. For purposes of Selective Enforcement Audit testing, the
manufacturer shall not perform any of the test procedures in subpart B
of this part relating to evaporative emission testing, except as
specified in paragraph (a)(2) of this section.
(1) The Administrator may, on the basis of a written application by
a manufacturer, prescribe test procedures other than those in subpart B
of this part for any motor vehicle which he determines is not
susceptible to satisfactory testing using the procedures in subpart B of
this part.
(2) The following exceptions to the test procedures in subpart B of
this part are applicable to Selective Enforcement Audit testing:
(i) The manufacturer may use test fuel meeting the specifications of
paragraph (a)(1) or (b)(2) of Sec. 86.113-82 for mileage accumulation.
Otherwise, the manufacturer may use fuels other than those specified in
this section only with advance approval of the Administrator.
(ii) The manufacturer may measure the temperature of the test fuel
at other than the approximate mid-volume of the fuel tank, as specified
in Sec. 86.131(a), and may drain the test fuel from other than the
lowest point of the tank, as specified in Sec. 86.131(b), provided an
equivalent method is used. Equivalency documentation shall be maintained
by the manufacturer and shall be made available to the Administrator
upon request.
(iii) The manufacturer may perform additional preconditioning on SEA
test vehicles other than the preconditioning specified in Sec. 86.132
only if the additional preconditioning had been performed on
certification test vehicles of the same configuration.
(iv) The manufacturer shall perform the heat build procedure 11 to
34 hours following vehicle preconditioning rather than according to the
time period specified in paragraph Sec. 86.133(a). All references in
Sec. 86.133 to an evaporative emission enclosure (SHED) and analyzing
for HC during the heat build can be ignored.
(v) The manufacturer may substitute slave tires for the drive wheel
tires on the vehicle as specified in paragraph Sec. 86.135(e): Provided,
That the slave tires are the same size.
(vi) The cold start exhaust emission test described in Sec. 86.137
shall follow the heat build procedure described in Sec. 86.133 by not
more than one hour.
(vii) In performing exhaust sample analysis under Sec. 86.140.
(A) When testing diesel vehicles, the manufacturer shall allow a
minimum of 20 minutes warm-up for the HC analyzer, and a minimum of 2
hours warm-up for the CO, CO2 and NOX analyzers.
(Power is normally left on infrared and chemiluminescent analyzers. When
not in use, the chopper motors of the infrared analyzers are turned off
and the phototube high voltage supply to the
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chemiluminescent analyzers is placed in the standby position.)
(B) The manufacturer shall exercise care to prevent moisture from
condensing in the sample collection bags.
(viii) The manufacturer need not comply with Sec. 86.142, since the
records required therein are provided under other provisions of subpart
G of this part.
(ix) In addition to the requirements of subpart B of this part, the
manufacturer shall prepare gasoline-fueled vehicles as follows prior to
exhaust emission testing:
(A) The manufacturer shall inspect the fuel system to insure the
absence of any leaks of liquid or vapor to the atmosphere by applying a
pressure of 14.50.5 inches of water to the fuel system,
allowing the pressure to stabilize, and isolating the fuel system from
the pressure source. Following isolation of the fuel system, pressure
must not drop more than 2.0 inches of water in 5 minutes. If required,
the manufacturer shall perform corrective action in accordance with
paragraph Sec. 86.608(d) and report this action in accordance with
paragraph Sec. 86.609(d).
(B) When performing this pressure check, the manufacturer shall
exercise care to neither purge nor load the evaporative emission control
system.
(C) The manufacturer shall not modify the test vehicle's evaporative
emission control system by component addition, deletion, or
substitution, except to comply with paragraph (a)(2)(ii) of this section
if approved in advance by the Administrator.
(b)(1) The manufacturer shall not adjust, repair, prepare, or modify
the vehicles selected for testing and shall not perform any emission
tests on vehicles selected for testing pursuant to the test order unless
this adjustment, repair, preparation, modification, and/or tests are
documented in the manufacturer's vehicle assembly and inspection
procedures and are actually performed or unless these adjustments and/or
tests are required or permitted under this subpart or are approved in
advance by the Administrator.
(2) For 1981 and later model years the Administrator may adjust or
cause to be adjusted any engine or vehicle parameter which the
Administrator has determined to be subject to adjustment for new vehicle
compliance testing (e.g., for certification or Selective Enforcement
Audit testing) in accordance with Sec. 86.081-22(c)(1), to any setting
within the physically adjustable range of that parameter, as determined
by the Administrator in accordance with Sec. 86.081-22(e)(3)(ii), prior
to the performance of any tests. However, if the idle speed parameter is
one which the Administrator has determined to be subject to adjustment,
the Administrator shall not adjust it to a setting which causes a lower
engine idle speed than will be possible within the physically adjustable
range of the idle speed parameter on the vehicle when it has accumulated
4,000 miles, all other parameters being adjusted identically for the
purpose of comparison. The Administrator, in making or specifying such
adjustments, will consider the effect of the deviation from the
manufacturer's recommended setting on emissions performance
characteristics as well as the likelihood that similar settings will
occur on in-use light-duty vehicles or light-duty trucks. In determining
likelihood, the Administrator will consider factors such as, but not
limited to, the effect of the adjustment on vehicle performance
characteristics and surveillance information from similar in-use
vehicles.
(c) Prior to performing exhaust emission testing on an SEA test
vehicle, the manufacturer may accumulate on each vehicle a number of
miles equal to the greater of 4,000 miles, or the number of miles the
manufacturer accumulated during certification on the emission-data
vehicle corresponding to the configuration specified in the test order.
(1) Mileage accumulation must be performed in any manner using good
engineering judgment to obtain emission results representative of normal
production vehicles. This mileage accumulation must be consistent with
the new vehicle break-in instructions contained in the applicable
vehicle owner's manual, if any.
(2) The manufacturer shall accumulate mileage at a minimum rate of
300 miles per vehicle during each 24 hour period, unless otherwise
provided by the Administrator.
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(i) The first 24 hour period for mileage accumulation shall begin as
soon as authorized vehicle checks, inspections and preparations are
completed on each vehicle.
(ii) The minimum mileage accumulation rate does not apply on
weekends or holidays.
(iii) If the manufacturer's mileage accumulation target is less than
the minimum rate specified (300 miles per day), then the minimum daily
accumulation rate shall be equal to the manufacturer's mileage
accumulation target.
(3) Mileage accumulation shall be completed on a sufficient number
of test vehicles during consecutive 24 hour periods to assure that the
number of vehicles tested per day fulfills the requirements of paragraph
(g) of this section.
(d) The manufacturer shall not perform any maintenance on test
vehicles after selection for testing nor shall the Administrator allow
deletion of any test vehicle from the test sequence, unless requested by
the manufacturer and approved by the Administrator before any test
vehicle maintenance or deletion.
(e) The manufacturer will be allowed 24 hours to ship test vehicles
from the assembly plant or storage facility to the test facility if the
test facility is not located at the plant or storage facility or in
close proximity to the plant or storage facility: Except, That the
Administrator may approve more time based upon a request by the
manufacturer accompanied by a satisfactory justification.
(f) If a vehicle cannot complete the mileage accumulation or
emission tests because of vehicle malfunction, the manufacturer may
request the Administrator to authorize the repair of that vehicle or its
deletion from the test sequence.
(g) Whenever the manufacturer conducts testing pursuant to a test
order issued under this subpart, the manufacturer shall notify the
Administrator within one working day of receipt of the test order, which
test facility will be used to comply with the test order and the number
of available test cells at that facility. If no test cells are available
at the desired facility, the manufacturer must provide alternate testing
capability satisfactory to the Administrator. The manufacturer shall
complete emission testing on a minimum of four vehicles per 24 hour
period including voided tests for each available test cell at his
testing facility: Except, That the Administrator may approve a longer
period based upon a request by the manufacturer accompanied by
satisfactory justification.
(h) The manufacturer shall perform test vehicle selection,
preparation, mileage accumulation, shipping, and testing in such a
manner as to assure that the audit is performed in an expeditious
manner.
(i) The manufacturer may retest any test vehicle after a fail
decision has been reached in accordance with paragraph (d) of
Sec. 86.610 based on the first test on each vehicle; except, that the
Administrator may approve retesting at other times during the audit
based upon a request by the manufacturer accompanied by a satisfactory
justification. The manufacturer may test each vehicle a total of three
times. The manufacturer shall test each vehicle the same number of
times. The manufacturer may accumulate additional mileage on test
vehicles before conducting retests, subject to the provisions of
paragraph (c) of this section.
[41 FR 31483, July 28, 1976, as amended at 43 FR 4552, Feb. 2, 1978; 44
FR 2975, Jan. 12, 1979; 45 FR 14524, Mar. 5, 1980; 47 FR 49813, Nov. 2,
1982; 49 FR 48482, Dec. 12, 1984. Redesignated and amended at 54 FR
2123, Jan. 19, 1989]