Cummins L9G19 vs VMAN D11A1
The Cummins L9G19 and VMAN D11A1 are both diesel generator engines in a similar power class. Both are rated at roughly 330 kVA. Displacement is 8.8 L versus 10.964 L. The table below compares their full specifications side by side.
| Specification | Cummins L9G19 | VMAN D11A1 |
|---|---|---|
| Headline rating | 330 kVA | 329 kVA |
| Standby (50 Hz) | 264 kWe | 263 kWe |
| Prime (50 Hz) | 241 kWe | 239 kWe |
| Standby (60 Hz) | 284 kWe | — |
| Prime (60 Hz) | 260 kWe | — |
| Displacement | 8.8 L | 10.964 L |
| Configuration | L6 | V6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Final Tier 4 / EU Stage V | Unregulated |
| Dry weight | — | — |
| Origin | United States | China |
Choosing between Cummins L9G19 and VMAN D11A1
Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing. The Cummins L9G19 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.