Document ID: EPA-HQ-OAR-2019-0307-0108
Agency: epa
Document Type: Rule
Title: Improvements for Heavy-Duty Engine and Vehicle Test Procedures, and other Technical Amendments
Posted Date: 2022-10-26T04:00Z

[Federal Register Volume 87, Number 206 (Wednesday, October 26, 2022)]
[Rules and Regulations]
[Pages 64864-64866]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: C2-2021-05306]

[[Page 64863]]

Vol. 87

Wednesday,

No. 206

October 26, 2022

Part II

Environmental Protection Agency

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40 CFR Parts 9, 59, 60, et al.

Improvements for Heavy-Duty Engine and Vehicle Test Procedures, and 
Other Technical Amendments; Corrections; Final Rule

  Federal Register / Vol. 87, No. 206 / Wednesday, October 26, 2022 / 
Rules and Regulations  

[[Page 64864]]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 9, 59, 60, 85, 86, 88, 89, 90, 91, 92, 94, 1027, 1033, 
1036, 1037, 1039, 1042, 1043, 1045, 1048, 1051, 1054, 1060, 1065, 
1066, 1068, and 1074

[EPA-HQ-OAR-2019-0307; FRL-10018-52-OAR]
RIN 2060-AU62

Improvements for Heavy-Duty Engine and Vehicle Test Procedures, 
and Other Technical Amendments

Corrections

    In rule document 2021-05306, appearing on pages 34308-34590, in the 
issue of Tuesday, June 29, 2021, make the following corrections:

Sec.  1036.301  [Corrected]

0
1. On page 34380, in the first column, in the sixth line above Table 1, 
``Mreduction'' should read ``Mreduction''.

Sec.  1036.540  [Corrected]

0
2. On page 34396, in the first column, at the top of the page, before 
(i) insert:
    ``(3) Run GEM for each simulated vehicle configuration as 
follows:''

Sec.  1037.528  [Corrected]

0
3. On page 34474, in the third column, after amendatory instruction 
152, the section heading should read:

Sec.  1037.528  Coastdown procedures for calculating drag area (CdA).

Sec.  1037.540  [Corrected]

0
4. On page 34477, in the second column, in the tenth line below Eq. 
1037.540-2, ``pcircuit-2'' should read 
``pcircuit-2''

Sec.  1037.550  [Corrected]

0
5. On page 34479, in the third column in paragraph (f)(4), 
``k[alpha]B = 4.0'' should read ``kaB = 4.0''.

0
6. On page 34481, in Table 1 of Sec.  1037.550, in the first column, in 
the first line, ``Slope, a;1'' should read ``Slope, 
a1''.

Sec.  1037.560  [Corrected]

0
7. On page 34485, in the first column, paragraph (f) introductory text 
should read:
    (f) Calculate the mean power loss, Ploss, at each test 
point as follows:

0
8. On the same page, in the second column, (f)(2) should read:
    (2) Calculate Ploss as the mean power loss from all 
measurements at a given test point.

0
9. On the same page, in the third column (f)(3) should read:
    (3) The following example illustrates a calculation of 
Ploss:
* * * * *

0
10. On the same page, in the first column paragraph (g) introductory 
text should read:
    (g) Create a table with the mean power loss, Ploss, 
corresponding to each test point for input into GEM. Express wheel 
angular speed in r/min to one decimal place; express output torque in 
N[middot]m to two decimal places; express power loss in kW to four 
decimal places.

0
11. On the same page, in the third column, (h)(3) should read:
    (3) Determine Ploss of untested axles for each speed and 
torque setpoint based on a linear relationship between your declared 
power loss and axle ratio as follows:
* * * * *

0
12. On page 34486, in the first column, (h)(4) should read:
    (4) Select declared values of Ploss for untested 
configurations that are at or above the values you determined in 
paragraph (h)(3) of this section.

Sec.  1037.565  [Corrected]

0
13. On page 34487, in the first column, paragraph (f) introductory text 
should read:
    (f) Calculate the mean power loss, Ploss, at each 
operating condition as follows:
* * * * *

0
14. On the same page, in the second column, the definition for 
fnout and paragraph (f)(2) introductory text should read as 
follows:
    fnout = mean output shaft speed from paragraph (e)(6) of 
this section in rad/s. Let fnout = 0 for all tests with the 
transmission in neutral. See paragraph (f)(2) of this section for 
calculating fnout as a function of fnin instead 
of measuring fnout.
    (2) For transmissions that are configured to not allow slip, you 
may calculate fnout based on the gear ratio using the 
following equation:
* * * * *

0
15. On the same page, in the third column, paragraph (f)(3), paragraph 
(f)(4) introductory text, and the eighth line after paragraph (f)(4) 
introductory text should read as follows:
    (3) Calculate Ploss as the mean power loss from all 
measurements at a given operating condition.
    (4) The following example illustrates a calculation of 
Ploss:
* * * * *
Ploss,3 = 4292 W = 4.292 kW
* * * * *

0
16. On page 34488, in the first column, lines 1-3 from the top of the 
page should read:
    (g) Create a table with the mean power loss, Ploss, 
corresponding to each operating condition for input into GEM.

Sec.  1037.570  [Corrected]

0
17. On page 34489, beginning in the second column, lines 17-20 from the 
top should read as follows:
    (e) Calculate the mean torque ratio, l, at each tested speed ratio, 
v, as follows:
    (1) Calculate [mu] at each tested speed ratio as follows:

0
18. On the same page, in the same column, in the 6th through 10 lines 
after Eq. 1037.570-1, paragraphs (e)(2) and (3) introductory text 
should read as follows:
    (2) Calculate l as the average of the two values of [mu] at each 
tested speed ratio.
    (3) The following example illustrates a calculation of l:
* * * * *

0
19. On the same page, in the third column, paragraphs (f) introductory 
text, (f)(1) introductory text, (f)(2), and (f)(3) introductory text 
should read as follows:
    (f) Calculate the mean capacity factor, k, at each tested speed 
ratio, n, as follows:
    (1) Calculate K at each tested speed ratio as follows:
* * * * *
    (2) Calculate k as the average of the two values of K at each 
tested speed ratio.
    (3) The following example illustrates a calculation of k:
* * * * *

0
20. On the same page, in the first column, beginning in the 7th line 
from the bottom, paragraph (g) should read as follows:
    (g) Create a table of GEM inputs showing l and k at each tested 
speed ratio, n. Express l to two decimal places; express k to one 
decimal place; express n to two decimal places.

Sec.  1037.805  [Corrected]

0
21. On page 34493, in Table 2 to Sec.  1037.805--Symbols for 
Quantities, in the first column,
0
a. line 7 should read: ag
0
b. line 8 should read: a0
0
c. line 9 should read: a1

0
22. On page 34494, in the second column, in Table 3 to Sec.  1037.805--
Superscripts, in the first column, the second and third lines should 
read:
    Double overbar (such as y)

[[Page 64865]]

Sec.  1065.307  [Corrected]

0
23. On page 34538, in the first column, in (c)(13), the first sentence 
should read as follows:
    (13) Use the arithmetic means, yi, and reference values, 
yrefi, to calculate least-squares linear regression 
parameters and statistical values to compare to the minimum performance 
criteria specified in Table 1 of this section.

0
24. On page 34539, in the second column, in paragraph (e)(3), (v) and 
(vi) should read as follows:
    (v) For linearity verification of a fuel flow rate meter, 
mmax is the manufacturer's specified maximum fuel rate of 
the lowest-power engine expected during testing.
    (vi) For linearity verification of a DEF flow rate meter, 
mmax is 10% of the manufacturer's specified maximum fuel 
rate of the lowest-power DEF-using engine expected during testing.

Sec.  1065.530  [Corrected]

0
25. On page 34547, in the first column, paragraph (g)(5) should read as 
follows:
    (g) * * *
    (5) If you perform carbon balance error verification, verify carbon 
balance error as specified in the standard-setting part and Sec.  
1065.543. Calculate and report the three carbon balance error 
quantities for each test interval; carbon mass absolute error for a 
test interval ([epsi]aC), carbon mass rate absolute error 
for a test interval ([epsi]aCrate), and carbon mass relative 
error for a test interval ([epsi]rC). For duty cycles with 
multiple test intervals, you may calculate and report the composite 
carbon mass relative error, [epsi]rCcomp, for the whole duty 
cycle. If you report [epsi]rCcomp, you must still calculate 
and report [epsi]aC, [epsi]aCrate, and 
[epsi]rC for each test interval.
* * * * *

Sec.  1065.543  [Corrected]

0
26. On page 34547, in the second column, paragraph (b)(1) should read:
    (b) * * *
    (1) Calculate carbon balance error quantities as described in Sec.  
1065.643. The three quantities for individual test intervals are carbon 
mass absolute error, [epsi]aC, carbon mass rate absolute 
error, [epsi]aCrate, and carbon mass relative error, 
[epsi]rC. Determine 
[epsi]aC, [epsi]aCrate, and [epsi]rC 
for all test intervals. You may determine composite carbon mass 
relative error, [epsi]rCcomp, as a fourth quantity that 
optionally applies for duty cycles with multiple test intervals.

0
27. On the same page, in the same column, Eq. 1065.543-1 should read:

[GRAPHIC] [TIFF OMITTED] TR26OC22.008

0
28. On the same page, in the third column, Eq. 1065.543-2 should read:
[GRAPHIC] [TIFF OMITTED] TR26OC22.009

0
29. On the same page, in the same column, lines 12-17 should read:
[GRAPHIC] [TIFF OMITTED] TR26OC22.007

    (iii) The carbon mass relative error limit, L[egr]rC, is 
0.020 for comparision to the absolute value of [epsi]rC, and 
optionally the absolute value of [epsi]rCcomp.

Sec.  1065.602  [Corrected]

0
30. On page 34554, in the third column, in (l)(1)(ii), in the 8th line 
down, ``pumping, P '' should read ``pumping, Pfrict.''

Sec.  1065.643  [Corrected]

0
31. On page 34559, in the first column, Eq. 1065.643-7 should read:

[ograve]aC = mCexh -mCfluid -
mCair

0
32. On page the same page, in the third column, Eq. 1065.643-8 should 
read:
[GRAPHIC] [TIFF OMITTED] TR26OC22.000

0
33. On the same page, beginning in the same column, Example: for Eq. 
1065.643-8 should read:

[epsi]aC = -6.7 g

t = 1202.2 s = 0.3339 hr
[GRAPHIC] [TIFF OMITTED] TR26OC22.001

0
34. On the same page, in the second column, Eq. 1065.643-9 should read:
[GRAPHIC] [TIFF OMITTED] TR26OC22.002

0
35. On the same page, beginning in the first column, Example: for Eq. 
1065.643-9 should read:

    [epsi]aC = -6.7 g
    mCfliud = 975.3 g
    mCair = 278.6 g
    [GRAPHIC] [TIFF OMITTED] TR26OC22.003
    

0
36. On page 34560, at the top of the page, Eq. 1065.643-10 should read:
[GRAPHIC] [TIFF OMITTED] TR26OC22.004

0
37. On the same page, in the first column, the formula before (iii) 
should read:
[GRAPHIC] [TIFF OMITTED] TR26OC22.005

[[Page 64866]]

0
38. On the same page, in the same column, the formula before amendatory 
instruction 353 should read:
[GRAPHIC] [TIFF OMITTED] TR26OC22.006

Sec.  1065.650  [Corrected]

0
39. On page 34561, in the third column, the fourth line after Eq. 
1065.650-8 should read:

ndexh = 57.692 mol/s

0
40. On page 34563, in the first column, the ninth through eleventh 
lines after Eq. 1065.650-19 should read:

P = mean steady-state power over the test interval as described in 
paragraph (e) of this section.

Sec.  1065.655  [Corrected]

0
41. On page the same page, in Table 1 of Sec.  1065.655, delete column 
1 and 2 headings and insert first entry to read as follows:

 Table 1 of Sec.   1065.655--Symbols and Subscripts for Chemical Balance
                                Equations
------------------------------------------------------------------------
 
------------------------------------------------------------------------
Xdil/exh.....................  amount of dilution gas or excess air per
                                mole of exhaust.
 
                              * * * * * * *
------------------------------------------------------------------------

Sec.  1065.1005  [Corrected]

0
42. On page 34576, in Table 1 of Sec.  1065.1005, in the Symbol column, 
the first line should read ``[alpha]''.

Sec.  1066.1005  [Corrected]

0
43. On page 34585, in Table 1 of Sec.  1066.1005, in the Symbol column, 
the fifth line should read ``Am''

[FR Doc. C2-2021-05306 Filed 10-25-22; 8:45 am]
BILLING CODE 0099-10-P