Manufacturer-documented fuel consumption for 5 1120–1125 kW Diesel generator sets — median 69.48 gal/h at full load, 36.19 gal/h at half load.
Compare 1120–1125 kW Diesel generator specs side-by-side →
| Model | kW | gal/h @ 50% | gal/h @ 100% | Tank (L) | Runtime @ 50% (h) |
|---|---|---|---|---|---|
| Caterpillar 3512 | 1120 | — | 50.67 | — | — |
| Cummins/Onan 1120 DFLC | 1120 | — | 76.35 | 2000 | — |
| Cummins/Onan C1400 D5 | 1120 | 38.04 | 69.48 | — | — |
| MTU 18V2000 DS1400 | 1120 | 34.34 | 66.04 | — | — |
| SDMO T1400 | 1122 | — | 71.59 | — | — |
Figures from each model’s own manufacturer documentation (spec sheets and manuals); runtime = documented tank capacity ÷ consumption at 50% load. Verify against the datasheet for your exact configuration.
Across 5 models with manufacturer data, full-load consumption runs 50.67–76.35 gal/h (median 69.48); at 50% load the median is 36.19 gal/h.