The test procedures of this subpart N apply for supplemental emission testing, except as specified otherwise in this section.
Speed A = nlo + 0.25 * (nhi - nlo)
Speed B = nlo + 0.50 * (nhi - nlo)
Speed C = nlo + 0.75 * (nhi - nlo)
Where: nhi = High speed as determined by calculating 70% of the maximum power. The highest engine speed where this power value occurs on the power curve is defined as nhi.
nlo = Low speed as determined by calculating 50% of the maximum power. The lowest engine speed where this power value occurs on the power curve is defined as nlo.
Maximum power = the maximum observed power calculated according to the engine mapping procedures defined in 40 CFR 1065.510 .
EZ = ERS + (ETU-ERS) * (MZ-MRS) / (MTU-MRS)
ETU = ET + (EU-ET) * (nZ-nRT) / (nSU-nRT)
ERS = ER + (ES-ER) * (nZ-nRT) / (nSU-nRT)
MTU = MT + (MU-MT) * (nZ-nRT) / (nSU-nRT)
MRS = MR + (MS-MR) * (nZ-nRT) / (nSU-nRT)
Where:
ER, ES, ET, EU = for each regulated pollutant, brake specific gaseous emissions of the enveloping modes adjusted according to the factors in(f)(2).
MR, MS, MT, MU = engine torque of the enveloping modes.
MZ = engine torque of the selected control point Z.
nZ = engine speed of the selected control point Z.
40 C.F.R. §86.1360