The Caterpillar C2.2 is a 1.35 L naturally aspirated engine rated at 2720 rpm, producing up to 44.7 kW. It powers generator sets from Caterpillar, including the XQ20 and XQ30. It holds 10.6 L (2.8 gal) of oil and 2.8 L (0.7 gal) of coolant.
| Oil capacity | 10.6 L |
|---|---|
| Coolant capacity | 2.8 L |
| Displacement | 1.35 L |
| Aspiration | naturally aspirated |
| Rated speed | 2720 rpm |
| Gross power | 44 kW |