The exhaust emission standards of this section apply after the 2014 model year. Certain standards in this section also apply for model year 2014 and earlier. This section presents the full set of emission standards that apply after all the transition and phase-in provisions of §§ 1039.102 and 1039.104 expire. Section 1039.105 specifies smoke standards.
Table 2 of § 1039.101 -Tier 4 FEL Caps After the 2014 Model Year, g/kW-hr
Maximum engine power | Application | PM | NOX | NOX + NMHC |
kW [LESS THAN]19 | All | 0.80 | 1 9.5 | |
19 [LESS THAN EQUAL TO]kW [LESS THAN]56 | All | 0.05 | 7.5 | |
56 [LESS THAN EQUAL TO]kW [LESS THAN]130 | All | 0.04 | 0.80 | |
130 [LESS THAN EQUAL TO]kW [LESS THAN EQUAL TO]560 | All | 0.04 | 0.80 | |
kW [GREATER THAN]560 | Generator sets | 0.05 | 1.07 | |
All except generator sets | 0.07 | 6.2 |
1 For engines below 8 kW, the FEL cap is 10.5 g/kW-hr for NOX + NMHC emissions.
Table 3 of § 1039.101 -Alternate FEL Caps, g/kW-hr
Maximum engine power | Starting model year1 | PM FEL cap | NOX FEL cap |
19 [LESS THAN EQUAL TO]kW [LESS THAN]56 | 2 2016 | 0.30 | |
56 [LESS THAN EQUAL TO]kW [LESS THAN]130 | 2016 | 3 0.30 | 3 3.8 |
130 [LESS THAN EQUAL TO]kW [LESS THAN EQUAL TO]560 | 2015 | 0.20 | 3.8 |
kW [GREATER THAN]560 | 2019 | 0.10 | 4 3.5 |
1 See § 1039.104(g) for alternate FEL caps that apply in earlier model years.
2 For manufacturers certifying engines under Option #1 of Table 3 of § 1039.102 , these alternate FEL caps apply starting with the 2017 model year.
3 For engines below 75 kW, the FEL caps are 0.40 g/kW-hr for PM emissions and 4.4 g/kW-hr for NOX emissions.
4 For engines above 560 kW, the provision for alternate NOX FEL caps is limited to generator-set engines. For example, if you produce 1,000 generator-set engines above 560 kW in a given model year, up to 50 of them may be certified to the alternate NOX FEL caps.
NTE standard for each pollutant = (STD) * (M)
Where:
STD = The standard specified for that pollutant in Table 1 of this section (or paragraph (c) of this section) if you certify without using ABT for that pollutant; or the FEL for that pollutant if you certify using ABT.
M = The NTE multiplier for that pollutant, as defined in paragraph (e)(3) of this section.
If . . . | Or . . . | Then . . . |
(i) The engine family is certified to a NOX standard less than 2.50 g/kW-hr without using ABT | The engine family is certified to a NOX FEL less than 2.50 g/kW-hr or a NOX + NMHC FEL less than 2.70 g/kW-hr | The multiplier for NOX, NMHC, and NOX + NMHC is 1.50. |
(ii) The engine family is certified to a PM standard less than 0.07 g/kW-hr without using ABT | The engine family is certified to a PM FEL less than 0.07 g/kW-hr | The multiplier for PM is 1.50. |
T = -0.00254 * A + 100
Where:
T = ambient air temperature in degrees Fahrenheit.
A = altitude in feet above sea level (A is negative for altitudes below sea level).
Table 4 of § 1039.101 -Useful Life Values
If your engine is certified as . . . | And its maximum power is . . . | And its rated speed is . . . | Then its useful life is . . . |
(i) Variable speed or constant speed | kW [LESS THAN]19 | Any Speed | 3,000 hours or five years, whichever comes first. |
(ii) Constant speed | 19 [LESS THAN EQUAL TO]kW [LESS THAN]37 | 3,000 rpm or higher | 3,000 hours or five years, whichever comes first. |
(iii) Constant speed | 19 [LESS THAN EQUAL TO]kW [LESS THAN]37 | Less than 3,000 rpm | 5,000 hours or seven years, whichever comes first. |
(iv) Variable | 19 [LESS THAN EQUAL TO]kW [LESS THAN]37 | Any Speed | 5,000 hours or seven years, whichever comes first. |
(v) Variable speed or constant speed | kW [GREATER THAN EQUAL TO]37 | Any speed | 8,000 hours or ten years, whichever comes first. |
40 C.F.R. §1039.101