Cummins 4B3.9-G12 vs Xinchai 3B11RD
The Cummins 4B3.9-G12 and Xinchai 3B11RD are both diesel generator engines in a similar power class. Both are rated at roughly 38 kVA. Displacement is 3.9 L versus 1.1 L. The table below compares their full specifications side by side.
| Specification | Cummins 4B3.9-G12 | Xinchai 3B11RD |
|---|---|---|
| Headline rating | 38 kVA | 38 kVA |
| Standby (50 Hz) | 30 kWe | 30 kWe |
| Prime (50 Hz) | 25 kWe | 27 kWe |
| Standby (60 Hz) | 35 kWe | — |
| Prime (60 Hz) | 28 kWe | — |
| Displacement | 3.9 L | 1.1 L |
| Configuration | L4 | L3 |
| Cylinders | 4 | 3 |
| Rated speed | 1,500 / 1,800 RPM | 3,000 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | China | China |