The driving cycle . . . | is identified in . . . |
(A) FTP | 40 CFR 1066.801(c)(1) . |
(B) US06 | 40 CFR 1066.801(c)(2) . |
(C) SC03 | 40 CFR 1066.801(c)(3) . |
(D) HFET | 40 CFR 1066.801(c)(5) . |
(E) ACC II-Mid-temperature intermediate soak | 40 CFR 1066.801(c)(8) . |
(F) ACC II-Early driveaway | 40 CFR 1066.801(c)(9) . |
(G) ACC II High-load PHEV engine starts | 40 CFR 1066.801(c)(10) . |
Table 1-To Paragraph (b) (2)-Fully Phased-In Tier 4 Criteria Exhaust Emission Standards a
NMOG+NO X (mg/mile) b | PM (mg/mile) c | CO (g/mile) d | Formaldehyde (mg/mile) e | |
Light-duty program vehicles | 15 | 0.5 | 1.7 | 4 |
Medium-duty vehicles | 75 | 0.5 | 3.2 | 6 |
a Paragraphs (b)(6) and (f) of this section describe how these standards phase in for model year 2027 and later vehicles. | ||||
b The NMOG+NO X standards apply on a fleet-average basis using discrete bin standards as described in paragraphs (b)(4) and (6) of this section. | ||||
c PM standards do not apply for the SC03, HFET, and ACC II driving cycles specified in paragraphs (b)(1)(ii)(C) through (G) of this section. | ||||
d Alternative CO standards of 9.6 and 25 g/mile apply for the US06 driving cycle for light-duty program vehicles and medium-duty vehicles, respectively. CO standards do not apply for the ACC II driving cycles specified in paragraph (b)(1)(ii)(E) through (G) of this section. | ||||
e Formaldehyde standards apply only for the FTP driving cycle. |
Table 2 to Paragraph (b)(4)(ii) -Tier 4 NMOG+NO X
Bin Standards for Light-Duty Program Vehicles
[mg/mile]
FEL name | FTP, US06, SC03, HFET | ACC II-Mid- temperature intermediate soak (3-12 hours) | ACC II-Mid- temperature intermediate soak (40 minutes) a | ACC II-Mid- temperature intermediate soak (10 minutes) | ACC II- Early driveaway b | ACC II- High-power PHEV engine starts bc |
Bin 70 | 70 | 70 | 54 | 35 | 82 | 200 |
Bin 65 | 65 | 65 | 50 | 33 | 77 | 188 |
Bin 60 | 60 | 60 | 46 | 30 | 72 | 175 |
Bin 55 | 55 | 55 | 42 | 28 | 67 | 163 |
Bin 50 | 50 | 50 | 38 | 25 | 62 | 150 |
Bin 45 | 45 | 45 | 35 | 23 | 57 | 138 |
Bin 40 | 40 | 40 | 31 | 20 | 52 | 125 |
Bin 35 | 35 | 35 | 27 | 18 | 47 | 113 |
Bin 30 | 30 | 30 | 23 | 15 | 42 | 100 |
Bin 25 | 25 | 25 | 19 | 13 | 37 | 84 |
Bin 20 | 20 | 20 | 15 | 10 | 32 | 67 |
Bin 15 | 15 | 15 | 12 | 8 | 27 | 51 |
Bin 10 | 10 | 10 | 8 | 5 | 22 | 34 |
Bin 5 | 5 | 5 | 4 | 3 | 17 | 17 |
Bin 0 | 0 | |||||
a Calculate the bin standard for a soak time between 10 and 40 minutes based on a linear interpolation between the corresponding bin values for a 10-minute soak and a 40-minute soak. Similarly, calculate the bin standard for a soak time between 40 minutes and 3 hours based on a linear interpolation between the corresponding bin values for a 40-minute soak and a 3-hour soak. | ||||||
b Qualifying vehicles are exempt from standards for early driveaway and high-power PHEV engine starts as described in paragraph (b)(5) of this section. | ||||||
c Alternative standards apply for high-power PHEV engine starts for model years 2027 through 2029 as described in paragraph (b)(6)(v) of this section. |
Table 3 to Paragraph (b)(6)(i) -Declining Fleet Average NMOG+NO X
Standards for Light-Duty Program Vehicles
Model year | Fleet average NMOG+NO X standard (mg/mile) |
2027 | 25 |
2028 | 23 |
2029 | 21 |
2030 | 19 |
2031 | 17 |
2032 | 15 |
Table 4 to Paragraph (b)(6)(iii) (B)-Declining Fleet Average NMOG+NO X
Standards for Medium-Duty Vehicles
Model year | Fleet average NMOG+NO X standard (mg/mile) |
2027 | 175 |
2028 | 160 |
2029 | 140 |
2030 | 120 |
2031 | 100 |
2032 | 80 |
2033 | 75 |
Table 5 to Paragraph (b)(6)(v) -Model Year 2027 Through 2029 Bin Standards for High-Power PHEV Engine Starts
FEL name | ACC II- High-power PHEV engine starts (mg/mile) |
Bin 70 | 320 |
Bin 65 | 300 |
Bin 60 | 280 |
Bin 55 | 260 |
Bin 50 | 240 |
Bin 45 | 220 |
Bin 40 | 200 |
Bin 35 | 175 |
Bin 30 | 150 |
Bin 25 | 125 |
Bin 20 | 100 |
Bin 15 | 75 |
Bin 10 | 50 |
Bin 5 | 25 |
Table 6 to Paragraph (e)(1) -Alternative Off-Cycle Standards for High-GCWR Vehicles With Compression-Ignition Engines a
Off-cycle bin | NO Xb | HC mg/hp·hr | PM mg/hp·hr | CO g/hp·hr |
Bin 1 | 7.5 g/hr | |||
Bin 2a | 75 mg/hp·hr | 210 | 7.5 | 23.25 |
Bin 2b | 30 mg/hp·hr | 210 | 7.5 | 23.25 |
a Listed standards include a conformity factor of 1.5. Accuracy margins apply as described in § 86.1845-04(h) . | ||||
b There is no temperature-based adjustment to the off-cycle NO X standard for testing with three-bin moving average windows. |
Table 7 to Paragraph (e)(2) -Off-Cycle Emission Standards for High-GCWR Vehicles With Spark-Ignition Engines a
Pollutant | Off-cycle emission standard |
NO Xb | 30 mg/hp·hr. |
HC | 210 mg/hp·hr. |
PM | 7.5 mg/hp·hr. |
CO | 21.6 g/hp·hr. |
a Listed standards include a conformity factor of 1.5. | |
b There is no temperature-based adjustment to the off-cycle NO X standard for vehicles with spark-ignition engines. |
40 C.F.R. §§86.1811-27