Cummins QSB3.9-G2 vs SDEC 4HT4.3-G22
The Cummins QSB3.9-G2 and SDEC 4HT4.3-G22 are both diesel generator engines in a similar power class. Both are rated at roughly 76 kVA. Displacement is 3.9 L versus 4.3 L. The table below compares their full specifications side by side.
| Specification | Cummins QSB3.9-G2 | SDEC 4HT4.3-G22 |
|---|---|---|
| Headline rating | 75 kVA | 76 kVA |
| Standby (50 Hz) | 60 kWe | 61 kWe |
| Prime (50 Hz) | 48 kWe | 56 kWe |
| Standby (60 Hz) | — | 67 kWe |
| Prime (60 Hz) | — | 60 kWe |
| Displacement | 3.9 L | 4.3 L |
| Configuration | L4 | L4 |
| Cylinders | 4 | 4 |
| Rated speed | 1,500 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | China National Stage III / Unregulated | China National Stage III / Unregulated |
| Dry weight | — | — |
| Origin | China | China |