Cummins C20N6 vs Xinchai 4D27LPG
The Cummins C20N6 and Xinchai 4D27LPG are both natural gas generator engines in a similar power class. The Xinchai 4D27LPG is the higher-output unit (30 kVA vs 25 kVA). Displacement is 2.4 L versus 2.7 L. The table below compares their full specifications side by side.
| Specification | Cummins C20N6 | Xinchai 4D27LPG |
|---|---|---|
| Headline rating | 25 kVA | 30 kVA |
| Standby (50 Hz) | — | 24 kWe |
| Prime (50 Hz) | — | 23 kWe |
| Standby (60 Hz) | 20 kWe | — |
| Prime (60 Hz) | — | — |
| Displacement | 2.4 L | 2.7 L |
| Configuration | L4 | L4 |
| Cylinders | 4 | 4 |
| Rated speed | 1,800 RPM | 1,500 RPM |
| Fuel | Natural Gas | LPG |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Stationary | Unregulated |
| Dry weight | — | — |
| Origin | United States | China |
Choosing between Cummins C20N6 and Xinchai 4D27LPG
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 Xinchai 4D27LPG has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.