Caterpillar CG18 vs Weichai 12M26D605E300NG
Compare Caterpillar CG18 and Weichai 12M26D605E300NG by recorded output, operating duty, frequency and engine specifications. Their listed displacements are 18.1 L and 31.2 L, respectively. Start with the same duty and frequency, then check each model’s source and package conditions. These records alone do not establish interchangeability.
| Specification | Caterpillar CG18 | Weichai 12M26D605E300NG |
|---|---|---|
| Standby electrical (50 Hz) | Not listed | Not listed |
| Prime electrical (50 Hz) | Not listed | 500 kWe |
| Standby electrical (60 Hz) | 500 kWe | Not listed |
| Prime electrical (60 Hz) | Not listed | Not listed |
| Other recorded mechanical power (duty unspecified) | 567 kW | Not listed |
| Displacement | 18.1 L | 31.2 L |
| Configuration | L6 | V12 |
| Cylinders | 6 | 12 |
| Recorded engine speed | 1,800 RPM | 1,500 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Recorded emissions classification | U.S. EPA Stationary | Unregulated |
| Dry weight | Not listed | Not listed |
| Origin | United States | China |
Compare matching ratings
Read across a row to compare the same operating duty and frequency. kWe is electrical output; mechanical kW is power at the engine shaft. kVA is apparent electrical power and is shown only when kWe is missing, without converting it. “Not listed” means the record lacks that rating, not zero output. Continuous and prime duties are kept separate. Check source documents, units and site conditions before comparing values.
An emissions classification in the catalog is not proof of certification for your engine or installation. Confirm the exact model, applicable documents and generator configuration.
Caterpillar CG18: Review the model record and available supporting documents
Weichai 12M26D605E300NG: Review the model record and available supporting documents
Choosing between Caterpillar CG18 and Weichai 12M26D605E300NG
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.