Caterpillar C6.6 vs Weichai WP4.6ND138E310
The Caterpillar C6.6 and Weichai WP4.6ND138E310 are both diesel generator engines in a similar power class. Both are rated at roughly 156 kVA. Displacement is 6.6 L versus 4.6 L. The table below compares their full specifications side by side.
| Specification | Caterpillar C6.6 | Weichai WP4.6ND138E310 |
|---|---|---|
| Headline rating | 156 kVA | 155 kVA |
| Standby (50 Hz) | 125 kWe | 124 kWe |
| Prime (50 Hz) | 113 kWe | 112 kWe |
| Standby (60 Hz) | 150 kWe | — |
| Prime (60 Hz) | 136 kWe | — |
| Displacement | 6.6 L | 4.6 L |
| Configuration | L6 | L4 |
| Cylinders | 6 | 4 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 3 | China National Stage III / Unregulated |
| Dry weight | — | — |
| Origin | USA | China |