Cummins QSB3.9-G37 vs Yuchai YC4A140-D30
The Cummins QSB3.9-G37 and Yuchai YC4A140-D30 are both diesel generator engines in a similar power class. Both are rated at roughly 110 kVA. Displacement is 3.9 L versus 4.837 L. The table below compares their full specifications side by side.
| Specification | Cummins QSB3.9-G37 | Yuchai YC4A140-D30 |
|---|---|---|
| Headline rating | 110 kVA | 110 kVA |
| Standby (50 Hz) | 88 kWe | 88 kWe |
| Prime (50 Hz) | 70 kWe | 80 kWe |
| Standby (60 Hz) | — | — |
| Prime (60 Hz) | — | — |
| Displacement | 3.9 L | 4.837 L |
| Configuration | L4 | L4 |
| Cylinders | 4 | 4 |
| Rated speed | 1,500 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | China National Stage III / Unregulated |
| Dry weight | — | — |
| Origin | China | China |