§ 1036.104 Criteria pollutant emission standards—NOX, HC, PM, and CO.
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.
(a) Emission standards. Exhaust emissions may not exceed the standards in this section, as follows:
(1) The following emission standards apply for Light HDE, Medium HDE, and Heavy HDE over the FTP, SET, and LLC duty cycles using the test procedures described in subpart F of this part:
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 |
(2) The following emission standards apply for Spark-ignition HDE over the FTP and SET duty cycles using the test procedures described in subpart F of this part:
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 |
(3) The following off-cycle emission standards apply for Light HDE, Medium HDE, and Heavy HDE using the procedures specified in § 1036.530, as follows:
Table 3 to Paragraph (a)(3) of § 1036.104—Compression-Ignition Standards for Off-Cycle Testing