Cummins QSZ13-G11 vs Yuchai YC6T660L-D21
The Cummins QSZ13-G11 and Yuchai YC6T660L-D21 are both diesel generator engines in a similar power class. Both are rated at roughly 550 kVA. Displacement is 12.9 L versus 16.35 L. The table below compares their full specifications side by side.
| Specification | Cummins QSZ13-G11 | Yuchai YC6T660L-D21 |
|---|---|---|
| Headline rating | 550 kVA | 550 kVA |
| Standby (50 Hz) | 440 kWe | 440 kWe |
| Prime (50 Hz) | 400 kWe | 400 kWe |
| Standby (60 Hz) | 500 kWe | 440 kWe |
| Prime (60 Hz) | 440 kWe | 400 kWe |
| Displacement | 12.9 L | 16.35 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 3 | China National Stage II / Unregulated |
| Dry weight | — | — |
| Origin | United States | China |