NTA855 Engines Four-stroke, water cooled, turbocharged and air-to-air aftercooled, Power covers 185-545 horsepower and the maximum torque is 1763 Nm, Self-weight is 1250 kg, and the ratio of power to self-weight is large.
Cummins PT fuel system, ultra-high injection pressure, ensures good atomization and complete combustion of the engine. High-efficiency Holset exhaust gas turbocharger can ensure more sufficient air intake, improve engine efficiency, further improve combustion, and reduce engine specific fuel consumption.
Air-to-air cooling technology ensures more sufficient air intake and better fuel economy, STC separate timing system ensures better combustion under high and low load conditions.
Cylinder block: Made of high-strength alloy cast iron, with good rigidity, small vibration and low noise.
Cylinder head: Four-valve design per cylinder, optimized air/fuel mixture ratio, effectively improving combustion and emission; two cylinders and one head, easy maintenance.
Camshaft: The large-diameter camshaft can withstand higher loads. The new design can precisely control the valve and fuel injection timing. The optimized cam profile can reduce the impact force and improve reliability and durability.
Crankshaft: Integral 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: Using the latest aluminum alloy casting technology, the ω-shaped head and barrel-shaped skirt are designed to compensate for thermal expansion and contraction, ensuring a good fit.
Rugged 4-cycle, industrial diesel delivers reliable power, low emissions and fast response to load changes.
Several alternator sizes offer selectable motor starting capability with low reactance 2/3 pitch windings; low waveform distortion with non-linear loads, fault clearing short-circuits capability, and class H insulation.
Is a hydro-mechanical Step Timing Control that advances the injection timing on start-up for improved startability and white smoke control.
Aftercooler: Three-pass design large capacity aftercooler results in cooler, denser intake air for more efficient combustion and reduced internal stresses for longer life. Aftercooler is located in engine coolant system, eliminating need for special plumbing.
Taper slot structure, 2/3 pitch windings, effectively suppressing waveform distortion of third harmonic current and output voltage under non-linear load. Call Cummins Care at Cummins™ (0086-21-332-827-11) for expert assistance from a Cummins Care representative. If you need service, representatives are available 24/7/365 to help you find the fastest solution.