Cummins QSK50 engine

QSK50 is a V-type 16-cylinder, high-performance, large-displacement diesel engine produced by Cummins. It is widely used in heavy-duty equipment such as mining trucks, construction machinery, oil drilling, generator sets, and ship propulsion. It is known for its excellent power performance, high durability, and low-emission technology, and is suitable for harsh working conditions.

1. Main technical parameters
Parameter Value
Engine type V-type 16-cylinder, four-stroke diesel engine
Displacement 50.3L (50300cc)
Bore × stroke 159mm × 159mm
Compression ratio 15.9:1
Maximum power 1400 – 2500 HP (1044 – 1864 kW)
Maximum torque Over 9000 N·m
Rated speed 1800 – 1900 rpm
Fuel system High pressure common rail (HPCR) or PT (Pressure-Time) injection system
Supercharging method Twin turbocharger + charge air cooling
Cooling method Water cooling
Emission standard Meets EPA Tier 2 / Tier 4 Final, some versions meet Euro V or National IV
Applicable fuel 0# or lower grade diesel
Lubrication system Oil pressure lubrication
Starting method Electric start or air start
2. Main features
✅ Super power: V16 structure, providing 1400-2500 HP, high torque output, suitable for heavy-duty equipment.
✅ Fuel economy: High-pressure common rail (HPCR) or PT fuel system, optimized fuel injection, improved combustion efficiency.
✅ High durability: Made of high-strength alloy, suitable for harsh working conditions such as mines and oil drilling.
✅ Intelligent monitoring system: Some versions are equipped with Cummins CM850 electronic control module to accurately control fuel injection and improve reliability.
✅ Low emission technology: EPA Tier 4 version is equipped with SCR (Selective Catalytic Reduction) + DPF (Diesel Particulate Filter) to reduce NOx and particulate matter emissions.

3. Applicable equipment (examples of some brands)
Mining trucks: Caterpillar, Terex, Komatsu, Liebherr and other 150-300 ton mining trucks
Engineering machinery: super large excavators, bulldozers (such as Hitachi EX8000, Caterpillar 6090, etc.)
Oil drilling: land drilling platforms, offshore drilling equipment
Generators: 1000-2000kW Cummins power stations, large data center backup power supplies
Ship propulsion: tugboats, engineering ships, offshore platform power supply systems
4. Maintenance recommendations
Oil replacement: It is recommended to replace it every 500-1000 hours (depending on the working conditions).
Air filter: Clean or replace regularly to prevent air intake blockage and affect combustion efficiency.
Fuel system: Use diesel that meets the standards, replace the fuel filter regularly, and keep the fuel injectors clean.
Cooling system: Check the coolant level to ensure that the cooling system is normal to prevent the engine from overheating.
Electronic monitoring system: It is recommended to connect the Cummins INSITE diagnostic system for regular inspection to prevent failures.