QSK38 series engine product performance characteristics

• Super power

The power covers 1086~1650 horsepower and the maximum torque is 6242 Newton meters.

The weight is 3958 kg, and the power to weight ratio is 0.417 horsepower/kg.

• Low fuel consumption and good economy

Cummins PT fuel system, ultra-high injection pressure, ensures good engine atomization and sufficient combustion.

The efficient Holset exhaust gas turbocharger can ensure more adequate air intake, improve engine efficiency, further improve combustion, and reduce engine specific fuel consumption.

Air-to-intercooling technology ensures more adequate air intake and better fuel economy.

• Compact structure and easy maintenance

Replaceable wet cylinder liner has good heat dissipation effect and is easy to replace. 

The parts of all models are highly versatile, highly serialized and easy to maintain.

Both the cylinder block and the cylinder head adopt built-in pressure lubricating oil passages, which have compact structure and low failure rate.

• Advanced design and reliable performance

Cylinder body: Made of high-strength alloy cast iron, with good rigidity, low vibration and low noise.

Cylinder head: Four-valve design per cylinder, optimized air/fuel mixing ratio, effectively improving combustion and emissions.

Camshaft: The single camshaft design can accurately control valve and injection timing, and the optimized cam profile can reduce impact force and improve reliability and durability.

Crankshaft: An integral crankshaft made of high-strength forged steel. The induction quenching process of fillets and journals can ensure higher fatigue strength of the crankshaft.

Piston: Using new aluminum alloy casting technology, the ω-shaped head and barrel-shaped skirt design can compensate for thermal expansion and contraction to ensure good fit.

• Professional configuration and excellent quality

Lubrication system: All moving parts are forced lubrication; the large-capacity gear pump provides pressure lubricating oil to lubricate the bearings and cool the pistons; the oil cooler, full-flow filter, and bypass filter ensure that the oil is maintained in good condition.

Fuel system: Cummins PT fuel system optimizes combustion and provides surging power; STC step-by-step timing system ensures better combustion in all working conditions; a low-pressure fuel supply system is configured with a one-way fuel circuit, which is safe and reliable.

Cooling system: forced water cooling by gear centrifugal water pump, large flow water channel design, good cooling effect; spin-on water filter and special DCA additive can effectively control the acidity of the coolant, prevent rust and cavitation, and remove impurities.

Intake and exhaust system: The efficient Holset exhaust gas supercharger further improves combustion; the pressure-type pulse exhaust pipe can make full use of exhaust gas energy and improve engine efficiency; air-to-air intercooling technology ensures better fuel economy and emissions.

• Mature products, famous all over the world

Dalian diesel generator sets are widely used: QSK38 series engines are widely used in engineering machinery, heavy-duty vehicles, power generation, ship power and other fields; it has formed strategic partners with important customers.

High reputation: As one of the main models of the Cummins family, the QSK38 series engines have won high recognition from customers in various fields for their strong power, ultra-low fuel consumption, high reliability and low maintenance costs.

Technology upgrade: Air-to-air intercooling, slow starting and other technologies have further improved the engine's reliability, power, fuel economy and emissions. The QSK38 engine adopts electronic injection technology and can meet the third stage emission standards of non-road mobile machinery, further enhancing