Cummins QSB6.7-G31 vs SDEC 6DTAA8.9-G5E2.1
The Cummins QSB6.7-G31 and SDEC 6DTAA8.9-G5E2.1 are both diesel generator engines in a similar power class. Both are rated at roughly 283 kVA. Displacement is 6.7 L versus 8.9 L. The table below compares their full specifications side by side.
| Specification | Cummins QSB6.7-G31 | SDEC 6DTAA8.9-G5E2.1 |
|---|---|---|
| Headline rating | 281 kVA | 285 kVA |
| Standby (50 Hz) | 225 kWe | — |
| Prime (50 Hz) | 180 kWe | — |
| Standby (60 Hz) | — | 228 kWe |
| Prime (60 Hz) | — | 207 kWe |
| Displacement | 6.7 L | 8.9 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,500 RPM | 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Euro Stage V |
| Dry weight | — | — |
| Origin | China | China |