Cummins QSK19-G8 vs PSI 20L-D
The Cummins QSK19-G8 and PSI 20L-D are both diesel generator engines in a similar power class. Both are rated at roughly 813 kVA. Displacement is 19 L versus 19.62 L. The table below compares their full specifications side by side.
| Specification | Cummins QSK19-G8 | PSI 20L-D |
|---|---|---|
| Headline rating | 813 kVA | 813 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | — | — |
| Standby (60 Hz) | 650 kWe | 650 kWe |
| Prime (60 Hz) | 545 kWe | — |
| Displacement | 19 L | 19.62 L |
| Configuration | L6 | L6 |
| Cylinders | 6 | 6 |
| Rated speed | 1,800 RPM | 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | China National Stage III / Unregulated | U.S. EPA Tier 3 |
| Dry weight | — | 2110 kg |
| Origin | China | United States |
Choosing between Cummins QSK19-G8 and PSI 20L-D
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.