QSF 2.8 engine

QSF2.8 is a 4-cylinder, in-line, water-cooled, turbocharged diesel engine produced by Cummins. It is mainly used in construction machinery, agricultural machinery, small generator sets, forklifts, excavators, air compressors and other equipment. It is widely used for its compact design, low fuel consumption, high reliability and environmental protection.

1. Main technical parameters
Parameter Value
Engine type Inline 4-cylinder, 4-stroke, turbocharged diesel engine
Displacement 2.8L (2793cc)
Bore × Stroke 94mm × 100mm
Compression ratio 16.9:1
Maximum power 49 – 74 HP (36 – 55 kW), depending on the adjustment
Maximum torque 208 – 265 N·m
Rated speed 2500 – 2800 rpm
Fuel system High-pressure common rail (HPCR) electronic injection system
Cooling method Water cooling
Boosting method Exhaust gas turbocharging
Emission standard EPA Tier 4 Final / Euro V / National IV
Applicable fuel 0# or lower grade diesel
Lubrication system Oil pressure lubrication
Starting method Electric start
2. Main features
✅ High power density: Small displacement provides strong power, suitable for compact equipment.
✅ Excellent fuel economy: High-pressure common rail fuel system (HPCR), full combustion, reduced fuel consumption.
✅ Low emission and environmental protection: Meets EPA Tier 4 Final / Euro V / National IV emission standards, adopts DOC+DPF technology (no SCR urea required).
✅ Compact structure and light weight: Suitable for small mechanical equipment, flexible installation.
✅ High reliability: Optimized turbocharging and cooling system to adapt to harsh working conditions.

3. Applicable equipment (examples of some brands)
Construction machinery: small excavators, skid loaders (such as Bobcat, Hitachi, Doosan, etc.)
Agricultural machinery: small tractors, combine harvesters (such as Case, John Deere, etc.)
Generators: Cummins OEM and some domestic brands
Forklifts & other equipment: Mitsubishi, Linde, Toyota, air compressors, etc.
4. Maintenance recommendations
Oil change: Change every 250-500 hours (depending on the working conditions).
Air filter: Clean or replace regularly to prevent increased intake resistance and power loss.
Fuel system: Use high-quality diesel and replace fuel filters regularly to prevent injector nozzles from clogging.
Cooling system: Check the antifreeze level, keep the water pump and radiator clean, and prevent overheating.