[Code of Federal Regulations]
[Title 40, Volume 31]
[Revised as of July 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 40CFR1039.140]

[Page 499]
 
                   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 B_Emission Standards and Related Requirements
 
Sec.  1039.140  What is my engine's maximum engine power?

    (a) An engine configuration's maximum engine power is the maximum 
brake power point on the nominal power curve for the engine 
configuration, as defined in this section. Round the power value to the 
nearest whole kilowatt.
    (b) The nominal power curve of an engine configuration is the 
relationship between maximum available engine brake power and engine 
speed for an engine, using the mapping procedures of 40 CFR part 1065, 
based on the manufacturer's design and production specifications for the 
engine. This information may also be expressed by a torque curve that 
relates maximum available engine torque with engine speed.
    (c) The nominal power curve must be within the range of the actual 
power curves of production engines considering normal production 
variability. If after production begins it is determined that your 
nominal power curve does not represent production engines, we may 
require you to amend your application for certification under Sec.  
1039.225.
    (d) Throughout this part, references to a specific power value or a 
range of power values for an engine are based on maximum engine power. 
For example, the group of engines with maximum engine power above 560 kW 
may be referred to as engines above 560 kW.