[Code of Federal Regulations]

[Title 40, Volume 20]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 40CFR89.117]



[Page 59-60]

 

                   TITLE 40--PROTECTION OF ENVIRONMENT

 

         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

 

PART 89_CONTROL OF EMISSIONS FROM NEW AND IN-USE NONROAD 

COMPRESSION-IGNITION ENGINES--Table of Contents

 

        Subpart B_Emission Standards and Certification Provisions

 

Sec.  89.117  Test fleet selection.



    (a) The manufacturer must select for testing, from each engine 

family, the engine with the most fuel injected per stroke of an 

injector, primarily at the speed of maximum torque and secondarily at 

rated speed.

    (b) Each engine in the test fleet must be constructed to be 

representative of production engines.



[[Page 60]]



    (c) After review of the manufacturer's test fleet, the Administrator 

may select from the available fleet one additional test engine from each 

engine family.

    (d) For establishing deterioration factors, the manufacturer shall 

select the engines, subsystems, or components to be used to determine 

exhaust emission deterioration factors for each engine-family control 

system combination. Engines, subsystems, or components shall be selected 

so that their emission deterioration characteristics are expected to 

represent those of in-use engines, based on good engineering judgment.



[59 FR 31335, June 17, 1994. Redesignated and amended at 63 FR 56995, 

57003, Oct. 23, 1998]