Table 1—8-Mode Test Cycle for Variable-Speed Engines
| Test segment | Mode number | Engine speed1 | Observed torque2 (percent of max. observed) | Minimum time in mode (minutes) | Weighting factors |
|---|---|---|---|---|---|
| 1 | 1 | Rated | 100 | 5.0 | 0.15 |
| 1 | 2 | Rated | 75 | 5.0 | 0.15 |
| 1 | 3 | Rated | 50 | 5.0 | 0.15 |
| 1 | 4 | Rated | 10 | 5.0 | 0.10 |
| 2 | 5 | Int | 100 | 5.0 | 0.10 |
| 2 | 6 | Int | 75 | 5.0 | 0.10 |
| 2 | 7 | Int | 50 | 5.0 | 0.10 |
| 2 | 8 | Idle | 0 | 5.0 | 0.15 |
1Engine speed (non-idle): ±2 percent of point. Engine speed (idle): Within manufacturer's specifications. Idle speed is specified by the manufacturer.
2Torque (non-idle): Throttle fully open for 100 percent points. Other non-idle points: ±2 percent of engine maximum value. Torque (idle): Throttle fully closed. Load less than 5 percent of peak torque.
Table 2—5-Mode Test Cycle for Constant-Speed Engines
| Mode number | Engine1 Speed | Observed torque2 (percent of max. observed) | Minimum time in mode (minutes) | Weighting factors |
|---|---|---|---|---|
| 1 | Rated | 100 | 5.0 | 0.05 |
| 2 | Rated | 75 | 5.0 | 0.25 |
| 3 | Rated | 50 | 5.0 | 0.30 |
| 4 | Rated | 25 | 5.0 | 0.30 |
| 5 | Rated | 10 | 5.0 | 0.10 |
1Engine speed: ±2 percent of point.
2Torque: Throttle fully open for 100 percent point. Other points: ±2 percent of engine maximum value.
Table 3—6-Mode Test Cycle for Engines Rated Under 19 kW
| Mode number | Engine speed1 | Observed torque2 (percent of max. observed) | Minimum time in mode (minutes) | Weighting factors |
|---|---|---|---|---|
| 1 | Rated | 100 | 5.0 | 0.09 |
| 2 | Rated | 75 | 5.0 | 0.20 |
| 3 | Rated | 50 | 5.0 | 0.29 |
| 4 | Rated | 25 | 5.0 | 0.30 |
| 5 | Rated | 10 | 5.0 | 0.07 |
| 6 | Idle | 0 | 5.0 | 0.05 |
1Engine speed (non-idle): ±2 percent of point. Engine speed (idle): Within manufacturer's specifications. Idle speed is specified by the manufacturer.
2Torque (non-idle): Throttle fully open for operation at 100 percent point. Other nonidle points: ±2 percent of engine maximum value. Torque (idle): Throttle fully closed. Load less than 5 percent of peak torque.
Table 4—4-Mode Test Cycle for Propulsion Marine Diesel Engines
| Mode number | Engine speed1 (percent of max. observed) | Observed power2 (percent of max. observed) | Minimum time in mode (minutes) | Weighting factors |
|---|---|---|---|---|
| 1 | 100 | 100 | 5.0 | 0.20 |
| 2 | 91 | 75 | 5.0 | 0.50 |
| 3 | 80 | 50 | 5.0 | 0.15 |
| 4 | 63 | 25 | 5.0 | 0.15 |
1Engine speed: ±2 percent of point.
2Power: Throttle fully open for operation at 100 percent point. Other points: ±2 percent of engine maximum value.
[63 FR 57019, Oct. 23, 1998]
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