(a) The following duty cycles apply as specified in §1042.505(b)(1):
(1) The following duty cycle applies for discrete-mode testing:
| E3 mode No. | Engine speed1 | Percent of maximum test power |
Weighting factors |
|---|---|---|---|
| 1 | Maximum test speed | 100 | 0.2 |
| 2 | 91% | 75 | 0.5 |
| 3 | 80% | 50 | 0.15 |
| 4 | 63% | 25 | 0.15 |
1Maximum test speed is defined in 40 CFR part 1065. Percent speed values are relative to maximum test speed.
(2) The following duty cycle applies for ramped-modal testing:
| RMC mode |
Time in mode (seconds) |
Engine speed1 3 |
Power (percent)2 3 |
|---|---|---|---|
| 1a Steady-state | 229 | Maximum test speed | 100%. |
| 1b Transition | 20 | Linear transition | Linear transition in torque. |
| 2a Steady-state | 166 | 63% | 25%. |
| 2b Transition | 20 | Linear transition | Linear transition in torque. |
| 3a Steady-state | 570 | 91% | 75%. |
| 3b Transition | 20 | Linear transition | Linear transition in torque. |
| 4a Steady-state | 175 | 80% | 50%. |
1Maximum test speed is defined in 40 CFR part 1065. Percent speed is relative to maximum test speed.
2The percent power is relative to the maximum test power.
3Advance from one mode to the next within a 20 second transition phase. During the transition phase, command a linear progression from the torque setting of the current mode to the torque setting of the next mode, and simultaneously command a similar linear progression for engine speed if there is a change in speed setting.
(b) The following duty cycles apply as specified in §1042.505(b)(2):
(1) The following duty cycle applies for discrete-mode testing:
| E5 mode No. | Engine speed1 |
Percent of maximum test power |
Weighting factors |
|---|---|---|---|
| 1 | Maximum test speed | 100 | 0.08 |
| 2 | 91% | 75 | 0.13 |
| 3 | 80% | 50 | 0.17 |
| 4 | 63% | 25 | 0.32 |
| 5 | Warm idle | 0 | 0.3 |
1Maximum test speed is defined in 40 CFR part 1065. Percent speed values are relative to maximum test speed.
(2) The following duty cycle applies for ramped-modal testing:
| RMC mode |
Time in mode (seconds) |
Engine speed1 3 |
Power (percent)2 3 |
|---|---|---|---|
| 1a Steady-state | 167 | Warm idle | 0. |
| 1b Transition | 20 | Linear transition | Linear transition in torque. |
| 2a Steady-state | 85 | Maximum test speed | 100%. |
| 2b Transition | 20 | Linear transition | Linear transition in torque. |
| 3a Steady-state | 354 | 63% | 25%. |
| 3b Transition | 20 | Linear transition | Linear transition in torque. |
| 4a Steady-state | 141 | 91% | 75%. |
| 4b Transition | 20 | Linear transition | Linear transition in torque. |
| 5a Steady-state | 182 | 80% | 50%. |
| 5b Transition | 20 | Linear transition | Linear transition in torque. |
| 6 Steady-state | 171 | Warm idle | 0. |
1Maximum test speed is defined in 40 CFR part 1065. Percent speed is relative to maximum test speed.
2The percent power is relative to the maximum test power.
3Advance from one mode to the next within a 20 second transition phase. During the transition phase, command a linear progression from the torque setting of the current mode to the torque setting of the next mode, and simultaneously command a similar linear progression for engine speed if there is a change in speed setting.
(c) The following duty cycles apply as specified in §1042.505(b)(3):
(1) The following duty cycle applies for discrete-mode testing:
| E2 mode No. | Engine speed1 |
Torque (percent)2 |
Weighting factors |
|---|---|---|---|
| 1 | Engine Governed | 100 | 0.2 |
| 2 | Engine Governed | 75 | 0.5 |
| 3 | Engine Governed | 50 | 0.15 |
| 4 | Engine Governed | 25 | 0.15 |
1Speed terms are defined in 40 CFR part 1065.
2The percent torque is relative to the maximum test torque as defined in 40 CFR part 1065.
(2) The following duty cycle applies for ramped-modal testing:
| RMC mode | Time in mode (seconds) |
Engine speed | Torque (percent)1 2 |
|---|---|---|---|
| 1a Steady-state | 229 | Engine Governed | 100%. |
| 1b Transition | 20 | Engine Governed | Linear transition. |
| 2a Steady-state | 166 | Engine Governed | 25%. |
| 2b Transition | 20 | Engine Governed | Linear transition. |
| 3a Steady-state | 570 | Engine Governed | 75%. |
| 3b Transition | 20 | Engine Governed | Linear transition. |
| 4a Steady-state | 175 | Engine Governed | 50%. |
1The percent torque is relative to the maximum test torque as defined in 40 CFR part 1065.
2Advance from one mode to the next within a 20 second transition phase. During the transition phase, command a linear progression from the torque setting of the current mode to the torque setting of the next mode.
[81 FR 74156, Oct. 25, 2016]
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