This section describes the applicable NOX, HC, CO, and PM standards for model years 2027 and later. These standards apply equally for all primary intended service classes unless otherwise noted.
Table 1 to Paragraph (a)(1) of § 1036.104 -Compression-Ignition Standards for Duty Cycle Testing
Duty cycle | NOX mg/hp·hr | HC mg/hp·hr | PM mg/hp·hr | CO g/hp·hr |
SET and FTP | 35 | 60 | 5 | 6.0 |
LLC | 50 | 140 | 5 | 6.0 |
Table 2 to Paragraph (a)(2) of § 1036.104 -Spark-Ignition Standards for Duty Cycle Testing
Duty cycle | NOX mg/hp·hr | HC mg/hp·hr | PM mg/hp·hr | CO g/hp·hr |
SET | 35 | 60 | 5 | 14.4 |
FTP | 35 | 60 | 5 | 6.0 |
Table 3 to Paragraph (a)(3) of § 1036.104 -Compression-Ignition Standards for Off-Cycle Testing
Off-cycle Bin | NOX | Temperature adjustmenta | HC mg/hp·hr | PM mg/hp·hr | CO g/hp·hr |
Bin 1 | 10.0 g/hr | (25.0-Tamb) · 0.25 | |||
Bin 2 | 58 mg/hp·hr | (25.0-Tamb) · 2.2 | 120 | 7.5 | 9 |
aTamb is the mean ambient temperature over a shift-day, or equivalent. Adjust the off-cycle NOX standard for Tamb below 25.0 °C by adding the calculated temperature adjustment to the specified NOX standard. Round the temperature adjustment to the same precision as the NOX standard for the appropriate bin. If you declare a NOX FEL for the engine family, do not apply the FEL scaling calculation from paragraph (c)(3) of this section to the calculated temperature adjustment.
Where:
Std[cycle]NOX, = the NOX emission standard that applies for the applicable cycle or for off-cycle testing under paragraph (a) of this section for engines not participating in the ABT program.
FELFTPNOX = the engine family's declared FEL for NOX over the FTP duty cycle from paragraph (c)(1) of this section.
StdFTPNOX = the NOX emission standard that applies for the FTP duty cycle under paragraph (a) of this section for engines not participating in the ABT program.
Example for model year 2029 Medium HDE for the SET:
StdSETNOX = 35 mg/hp·hr
FELFTP = 121 mg/hp·hr
StdFTPNOX = 35 mg/hp·hr
FELSETNOX = 121 mg/hp·hr
Table 4 to Paragraph (e) of § 1036.104 -Useful Life by Primary Intended Service Class
Primary intended service class | Model year 2026 and earlier | Model year 2027 and later | ||||
Miles | Years | Hours | Miles | Years | Hours | |
Spark-ignition HDE | 110,000 | 10 | 200,000 | 15 | 10,000 | |
Light HDE | 110,000 | 10 | 270,000 | 15 | 13,000 | |
Medium HDE | 185,000 | 10 | 350,000 | 12 | 17,000 | |
Heavy HDE | 435,000 | 10 | 22,000 | 650,000 | 11 | 32,000 |
40 C.F.R. §1036.104