[Code of Federal Regulations]
[Title 40, Volume 30]
[Revised as of July 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR1039.501]

[Page 500-501]
 
                   TITLE 40--PROTECTION OF ENVIRONMENT
 
         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
 
PART 1039_CONTROL OF EMISSIONS FROM NEW AND IN-USE NONROAD 
COMPRESSION-IGNITION ENGINES--Table of Contents
 
                        Subpart F_Test Procedures
 
Sec. 1039.501  How do I run a valid emission test?


    (a) Use the equipment and procedures for compression-ignition 
engines in 40 CFR part 1065 to determine whether engines meet the duty-
cycle emission standards in Sec. 1039.101(a) and (b). Measure the 
emissions of all the pollutants we regulate in Sec. 1039.101 as 
specified in 40 CFR part 1065. Note that we do not allow partial-flow 
sampling for measuring PM emissions on a laboratory dynamometer for 
transient testing. Use the applicable duty cycles specified in 
Sec. Sec. 1039.505 and 1039.510.
    (b) Section 1039.515 describes the supplemental procedures for 
evaluating whether engines meet the not-to-exceed emission standards in 
Sec. 1039.101(e).
    (c) Measure smoke using the procedures in 40 CFR part 86, subpart I, 
for evaluating whether engines meet the smoke standards in Sec. 
1039.105, except that you may test two-cylinder engines with an exhaust 
muffler like those installed on in-use engines.
    (d) Use the fuels specified in Sec. 1039.104(e) and 40 CFR part 
1065 to perform valid tests.

[[Page 501]]

    (1) For service accumulation, use the test fuel or any commercially 
available fuel that is representative of the fuel that in-use engines 
will use.
    (2) For diesel-fueled engines, use the appropriate diesel fuel 
specified in 40 CFR part 1065 for emission testing. Unless we specify 
otherwise, the appropriate diesel test fuel is the ultra low-sulfur 
diesel fuel. If we allow you to use a test fuel with higher sulfur 
levels, identify the test fuel in your application for certification and 
ensure that the emission control information label is consistent with 
your selection of the test fuel (see Sec. 1039.135(c)(9)). For example, 
do not test with ultra low-sulfur diesel fuel if you intend to label 
your engines to allow use of diesel fuel with sulfur concentrations up 
to 500 ppm.
    (e) You may use special or alternate procedures to the extent we 
allow them under 40 CFR 1065.10.
    (f) This subpart is addressed to you as a manufacturer, but it 
applies equally to anyone who does testing for you, and to us when we 
perform testing to determine if your engines meet emission standards.