N series engine product performance characteristics? Super power power covers 185-545 hp and maximum torque of 1763 Newton meters. Low-speed torque, started fast, climbing ability. Weight 1250 kg, the power weight ratio. ? Low fuel economy is good Cummins PT fuel system patented technology, high injection pressure, ensure that the engine good atomization, combustion. Efficient Holset turbocharger exhaust intake ensures more fully, improve engine efficiency and further improve combustion and reduce engine specific fuel consumption. Air Cooling technology to ensure intake fuller, better fuel economy. ? Compact, easy maintenance replaceable wet cylinder liners, cooling effect, easy to replace. All models parts versatility, high degree of serialization, and easy maintenance. Block and head are taking a built-in pressure lubricants Road, compact, low failure rate. Composite oil filter, easy maintenance, lower routine maintenance costs. Overhaul mileage of more than one million kilometers. ? Advanced design and reliable performance of the cylinder: high-strength alloy cast iron, rigidity, vibration, low noise. Head: four-valve per cylinder design, optimized air / fuel ratio, improve combustion and emissions; a two-cylinder cover for easy maintenance. Camshaft: Large diameter camshaft can withstand higher loads, the new design can be precisely controlled valve and injection timing, cam profile optimization can reduce the impact force, improve reliability and durability. Crankshaft: high strength forged steel crankshaft overall, induction hardening process and journal fillets can guarantee higher fatigue strength of the crankshaft. Pistons: aluminum alloy using the latest technology, ω-type head and barrel skirt designed to compensate for thermal expansion and contraction, to ensure a good fit.