Appendix II - Appendix II to Part 1042— Steady-State Duty Cycles
(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 speed 1 | 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 |
|---|
1 Maximum 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
speed 1 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%. |
|---|
1 Maximum test speed is defined in 40 CFR part 1065. Percent speed is relative to maximum test speed.
2 The percent power is relative to the maximum test power.
3 Advance 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
speed 1 | 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 |
|---|
1 Maximum 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
speed 1 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. |
|---|
1 Maximum test speed is defined in 40 CFR part 1065. Percent speed is relative to maximum test speed.
2 The percent power is relative to the maximum test power.
3 Advance 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
speed 1 | 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 |
|---|
1 Speed terms are defined in 40 CFR part 1065.
2 The 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%. |
|---|
1 The percent torque is relative to the maximum test torque as defined in 40 CFR part 1065.
2 Advance 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.