Cummins QSB3.9-G3 vs Yuchai YC6B130Z-D20
The Cummins QSB3.9-G3 and Yuchai YC6B130Z-D20 are both diesel generator engines in a similar power class. Both are rated at roughly 100 kVA. Displacement is 3.9 L versus 6.871 L. The table below compares their full specifications side by side.
| Specification | Cummins QSB3.9-G3 | Yuchai YC6B130Z-D20 |
|---|---|---|
| Headline rating | 100 kVA | 100 kVA |
| Standby (50 Hz) | 80 kWe | — |
| Prime (50 Hz) | 64 kWe | — |
| Standby (60 Hz) | — | 80 kWe |
| Prime (60 Hz) | — | 70 kWe |
| Displacement | 3.9 L | 6.871 L |
| Configuration | L4 | L6 |
| Cylinders | 4 | 6 |
| Rated speed | 1,500 RPM | 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | China National Stage III / Unregulated | China National Stage II / Unregulated |
| Dry weight | — | — |
| Origin | China | China |