Greenhouse Gas Emissions and Fuel Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles--Phase 2 |
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Environmental Protection Agency
National Highway Traffic Safety Administration
30 June 2017
[Federal Register Volume 82, Number 125 (Friday, June 30, 2017)]
[Rules and Regulations]
[Pages 29761-29762]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: C1-2016-21203]
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ENVIRONMENTAL PROTECTION AGENCY
40 CFR Parts 9, 22, 85, 86, 600, 1033, 1036, 1037, 1039, 1042,
1043, 1065, 1066, and 1068
DEPARTMENT OF TRANSPORTATION
National Highway Traffic Safety Administration
49 CFR Parts 523, 534, 535, and 538
[EPA-HQ-OAR-2014-0827; NHTSA-2014-0132; FRL-9950-25-OAR]
RIN 2060-AS16; RIN 2127-AL52
Greenhouse Gas Emissions and Fuel Efficiency Standards for
Medium- and Heavy-Duty Engines and Vehicles--Phase 2
Correction
0
In rule document 2016-21203, appearing on pages 73478-74274, in the
issue of Tuesday, October 25, 2016, make the following corrections:
Sec. 1036.805 Symbols, abbreviations, and acronyms. [Corrected]
0
1. On page 74044, in paragraph (b), the table should read as follows:
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Unit in terms of SI
Symbol Quantity Unit Unit symbol base units
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a............................. atomic hydrogen- mole per mole.... mol/mol........... 1.
to-carbon ratio.
b............................. atomic oxygen-to- mole per mole.... mol/mol........... 1.
carbon ratio.
CdA........................... drag area........ meter squared.... m\2\.............. m\2\.
Crr........................... coefficient of kilogram per kg/tonne.......... 10-\3\.
rolling metric ton.
resistance.
D............................. distance......... miles or meters.. mi or m........... m.
e............................. mass weighted grams/ton-mile... g/ton-mi.......... g/kg-km.
emission result.
Eff........................... efficiency.
Em............................ mass-specific net megajoules/ MJ/kg............. m\2\[middot]s-\2\.
energy content. kilogram.
fn............................ angular speed revolutions per r/min............. [pi][middot]30[middot]
(shaft). minute. s-\1\.
i............................. indexing
variable.
ka............................ drive axle ratio.
ktopgear...................... highest available
transmission
gear.
m............................. mass............. pound mass or lbm or kg......... kg.
kilogram.
M............................. molar mass....... gram per mole.... g/mol............. 10-
\3\[middot]kg[middot]
mol-\1\.
M............................. vehicle mass..... kilogram......... kg................ kg.
Mrotating..................... inertial mass of kilogram......... kg................ kg.
rotating
components.
N............................. total number in a
series.
P............................. power............ kilowatt......... kW................ 10\3\[middot]m\2\[midd
ot]kg[middot]s-\3\.
T............................. torque (moment of newton meter..... N[middot]m........ m\2\[middot]kg[middot]
force). s-\2\.
t............................. time............. second........... s................. s.
[Delta]t...................... time interval, second........... s................. s.
period, 1/
frequency.
UF............................ utility factor.
v............................. speed............ miles per hour or mi/hr or m/s...... m[middot]s-\1\.
meters per
second.
[[Page 29762]]
W............................. work............. kilowatt-hour.... kW[middot]hr...... 3.6[middot]m\2\[middot
]kg[middot]s-\1\.
wC............................ carbon mass gram/gram........ g/g............... 1.
fraction.
wCH4N2O....................... urea mass gram/gram........ g/g............... 1.
fraction.
x............................. amount of mole per mole.... mol/mol........... 1.
substance mole
fraction.
xb............................ brake energy
fraction.
xbl........................... brake energy
limit.
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Sec. 1037.550 Powertrain testing. [Corrected]
0
2. On page 74097, in the third column, TABLE 1 OF Sec. 1037.550--
STATISTICAL CRITERIA FOR VALIDATING DUTY CYCLES should read as follows:
Table 1 of Sec. 1037.550--Statistical Criteria for Validating Duty
Cycles
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Parameter \1\ Speed control
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Slope, a1................................. 0.990 <= a1 <= 1.010.
Absolute value of intercept, <=2.0% of maximum test
[bond]a0[bond]. speed.
Standard error of estimate, SEE........... <=2.0% of maximum test
speed.
Coefficient of determination, r\2\........ >=0.990.
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\1\ Determine values for specified parameters as described in 40 CFR
1065.514(e) by comparing measured and reference values for fnref,dyno.
[FR Doc. C1-2016-21203 Filed 6-29-17; 8:45 am]
BILLING CODE 1301-00-D