[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: 40CFR1039.515]



[Page 510]

 

                   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.  1039.515  What are the test procedures related to not-to-exceed 

standards?



    (a) General provisions. The provisions in 40 CFR 86.1370-2007 apply 

for determining whether an engine meets the not-to-exceed emission 

standards in Sec.  1039.101(e). Interpret references to vehicles and 

vehicle operation to mean equipment and equipment operation.

    (b) Special PM zone. For engines certified to a PM standard or FEL 

above 0.07 g/kW-hr, a modified NTE control area applies for PM emissions 

only. The speeds and loads to be excluded are determined based on speeds 

B and C, determined according to the provisions of 40 CFR 86.1360-

2007(c). One of the following provisions applies:

    (1) If the C speed is below 2400 rpm, exclude the speed and load 

points to the right of or below the line formed by connecting the 

following two points on a plot of speed-vs.-power:

    (i) 30% of maximum power at the B speed; however, use the power 

value corresponding to the engine operation at 30% of maximum torque at 

the B speed if this is greater than 30% of maximum power at the B speed.

    (ii) 70% of maximum power at 100% speed.

    (2) If the C speed is at or above 2400 rpm, exclude the speed and 

load points to the right of the line formed by connecting the two points 

in paragraphs (b)(2)(i) and (ii) of this section (the 30% and 50% 

torque/power points) and below the line formed by connecting the two 

points in paragraphs (b)(2)(ii) and (iii) of this section (the 50% and 

70% torque/power points). The 30%, 50%, and 70% torque/power points are 

defined as follows:

    (i) 30% of maximum power at the B speed; however, use the power 

value corresponding to the engine operation at 30% of maximum torque at 

the B speed if this is greater than 30% of maximum power at the B speed.

    (ii) 50% of maximum power at 2400 rpm.

    (iii) 70% of maximum power at 100% speed.