The Holset exhaust gas turbocharger can ensure more intake, improve engine efficiency, further improve combustion, and reduce engine fuel consumption.
Air-air intercooling technology ensures more sufficient air intake and better fuel economy.
• Compact structure and easy maintenance
to replace wet cylinder liner, good heat dissipation effect and easy replacement.
All models have strong versatility, high serialization, and easy to maintain.
Both the cylinder block and the cylinder head adopt a built-in pressure lubricating oil channel, which has a compact structure and a low failure rate.
• Designed with advanced performance reliable
cylinder block: made of high-strength alloy cast iron, good rigidity, low vibration and low noise.
Cylinder head: Four valves per cylinder are designed, optimized air/fuel mixing ratio, combustion and emissions; one cover per cylinder, easy maintenance.
Camshaft: Dual camshaft design controls valve and fuel injection timing, and optimized cam-shaped wire reduces impact force, improves reliability and durability.
Crankshaft: The integrated crankshaft made of high-strength forged steel, the induction hardening process of rounded corners and journals can ensure higher fatigue strength of the crankshaft.
Piston: Use aluminum alloy casting technology, the ω-shaped head and barrel skirt design can compensate for thermal expansion and contraction, ensuring good cooperation.
Lubrication system: All moving parts are forced lubricated; large-capacity gear pump provides pressure lubricating oil to lubricate the bearing and cool the piston; engine oil cooler, full flow filter, and bypass filter maintain good engine oil condition.
Fuel system: PT fuel system with Cummins patented technology, optimized combustion and strong power; STC distributed timing system ensures good combustion in all working conditions; low-pressure oil supply system is adopted, equipped with a one-way fuel circuit, which is reliable.
Cooling system: Forced water cooling with gear centrifugal water pump, large flow water channel design, good cooling effect; rotary water filter and DCA additives can prevent rust and cavitation, control the acidity of the coolant and remove impurities.
Intake and exhaust system: Holset exhaust gas booster further improves combustion; the pressure pulse exhaust pipe can make full use of exhaust energy and improve engine efficiency; air-to-air intercooling technology ensures fuel economy and good emissions.
• Mature products, well-known worldwide
and widely used: Since Cummins entered China in 1975, the K38 series engine has been widely used in engineering machinery, heavy vehicles, power generation, marine 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 K38 series engine has won high recognition from customers in various fields for its power, ultra-low fuel consumption, high reliability and low maintenance costs.
Technology upgrade: technologies such as air-cooling and slow start have further improved the engine's reliability, power, fuel economy and emission indicators. The QSK38 engine launched in 2008 uses electronic injection technology and has a power of 806-1200kW, which can meet the third-stage emission standards of non-road mobile machinery.
