Cummins QSV91G vs Jenbacher J612
Compare Cummins QSV91G and Jenbacher J612 by catalog output, operating duty, frequency and engine specifications. Their listed displacements are 91.6 L and 74.9 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 | Cummins QSV91G | Jenbacher J612 |
|---|---|---|
| Standby electrical (50 Hz) | Not listed | Not listed |
| Prime electrical (50 Hz) | 2,000 kWe | 2,000 kWe |
| Standby electrical (60 Hz) | Not listed | Not listed |
| Prime electrical (60 Hz) | Not listed | 1,986 kWe |
| Other recorded mechanical power (duty unspecified) | 2,000 kW | 2,000 kW |
| Displacement | 91.6 L | 74.9 L |
| Configuration | V18 | V12 |
| Cylinders | 18 | 12 |
| Recorded engine speed | 1,500 RPM | 1,500 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Recorded emissions classification | Unregulated | Unregulated |
| Dry weight | Not listed | Not listed |
| Origin | United States | Austria |
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.
Cummins QSV91G: Review the model record and available supporting documents
Jenbacher J612: Review the model record and available supporting documents
Choosing between Cummins QSV91G and Jenbacher J612
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.