[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: 40CFR1051.137]



[Page 625-626]

 

                   TITLE 40--PROTECTION OF ENVIRONMENT

 

         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

 

PART 1051_CONTROL OF EMISSIONS FROM RECREATIONAL ENGINES AND VEHICLES

--Table of Contents

 

          Subpart B_Emission Standards and Related Requirements

 

Sec.  1051.137  What are the consumer labeling requirements?



    Label every vehicle certified under this part with a removable hang-

tag showing its emission characteristics relative to other models. The 

label should be attached securely to the vehicle before it is offered 

for sale in such a manner that it would not be accidentally removed 

prior to sale. Use the applicable equations of this section to determine 

the normalized emission rate (NER) from the FEL for your vehicle. If the 

vehicle is certified without using the averaging provisions of subpart 

H, use the final deteriorated emission level. Round the resulting 

normalized emission rate for your vehicle to one decimal place. If the 

calculated NER value is less than zero, consider NER to be zero for that 

vehicle. We may specify a standardized format for labels. At a minimum, 

the tag should include: the manufacturer's name, vehicle model name, 

engine description (500 cc two-stroke with DFI), the NER, and a brief 

explanation of the scale (for example, note that 0 is the cleanest and 

10 is the least clean).

    (a) For snowmobiles, use the following equation:



NER = 16.61 x log (2.667 x HC + CO)-38.22



Where:



HC and CO are the cycle-weighted FELs (or emission rates) for 

hydrocarbons and carbon monoxide in g/kW-hr.



    (b) For off-highway motorcycles, use the following equations:

    (1) For off-highway motorcycles certified to the standards in Sec.  

1051.105, use one of the equations specified below.

    (i) If the vehicle has HC + NOX emissions less than or 

equal to 2.0 g/km, use the following equation:



NER = 2.500 x (HC+NOX)



Where:



HC+NOX is the FEL (or the sum of the cycle-weighted emission 

rates) for hydrocarbons and oxides of nitrogen in g/km.



    (ii) If the vehicle has HC + NOX emissions greater than 

2.0 g/km, use the following equation:



NER = 5.000 x log(HC+NOX)+ 3.495



Where:



HC+NOX is the FEL (or the sum of the cycle-weighted emission 

rates) for hydrocarbons and oxides of nitrogen in g/km.



    (2) For off-highway motorcycles certified to the standards in Sec.  

1051.615(b), use the following equation:



NER = 8.782 x log(HC+NOX) -5.598



Where:



HC+NOX is the FEL (or the sum of the cycle-weighted emission 

rates) for hydrocarbons and oxides of nitrogen in g/kW-hr.



    (c) For ATVs, use the following equations:

    (1) For ATVs certified to the standards in Sec.  1051.107, use one 

of the equations specified below.

    (i) If the vehicle has HC + NOX emissions less than or 

equal to 1.5 g/km, use the following equation:



NER = 3.333 x (HC+NOX)



Where:



HC+NOX is the FEL (or the sum of the cycle-weighted emission 

rates) for hydrocarbons and oxides of nitrogen in g/km.



    (ii) If the vehicle has HC + NOX emissions greater than 

1.5 g/km, use the following equation:



NER = 4.444 x log(HC+NOX)+4.217



Where:



HC+NOX is the FEL (or the sum of the cycle-weighted emission 

rates) for hydrocarbons and oxides of nitrogen in g/km.



    (2) For ATVs certified to the standards in Sec.  1051.615(a), use 

the following equation:





[[Page 626]]





NER = 8.782 x log(HC + NOX) -7.277



Where:



HC+NOX is the FEL (or the sum of the cycle-weighted emission 

rates) for hydrocarbons and oxides of nitrogen in g/kW-hr.



[70 FR 40491, July 13, 2005]