40 CFR Part 1054, Appendix B
(a) Test handheld engines with the following steady-state duty cycle:
| G3 mode No. | Engine speed a | Torque(percent) b | Weighting factors |
|---|---|---|---|
| 1 | Rated speed | 100 | 0.85 |
| 2 | Warm idle | 0 | 0.15 |
a Test engines at the specified speeds as described in § 1054.505.
b Test engines at 100 percent torque by setting operator demand to maximum. Control torque during idle at its warm idle speed as described in 40 CFR 1065.510.
(b) Test nonhandheld engines with one of the following steady-state duty cycles:
(1) The following duty cycle applies for engines designed to idle:
| G2 ModeNo.a | Torque(percent) b | Weighting factors |
|---|---|---|
| 1 | 100 | 0.09 |
| 2 | 75 | 0.2 |
| 3 | 50 | 0.29 |
| 4 | 25 | 0.3 |
| 5 | 10 | 0.07 |
| 6 | 0 | 0.05 |
a Control engine speed as described in § 1054.505. Control engine speed for Mode 6 as described in § 1054.505(c) for idle operation.
b The percent torque is relative to the value established for full-load torque, as described in § 1054.505.
(2) The following duty cycle applies for engines that are not designed to idle:
| Mode No.a | Torque(percent) b | Weighting factors |
|---|---|---|
| 1 | 100 | 0.09 |
| 2 | 75 | 0.21 |
| 3 | 50 | 0.31 |
| 4 | 25 | 0.32 |
| 5 | 10 | 0.07 |
a Control engine speed as described in § 1054.505.
b The percent torque is relative to the value established for full-load torque, as described in § 1054.505.
[88 FR 4668, Jan. 24, 2023]