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NT855-C400S20
Cummins
The Cummins NT855-C400S20 is a heavy-duty 14-liter diesel engine engineered to deliver reliable, high-torque power in the world's most challenging environments. As part of the legendary NT855 series—known for millions of hours of service-proven operation—this turbocharged and aftercooled inline-six engine offers an optimal balance of performance, fuel economy, and renowned durability for critical industrial and commercial applications.
The NT855-C400S20 is built for a wide range of heavy-duty, continuous-use equipment. Its core applications span three major sectors:
Construction & Mining Machinery: This engine is a trusted power source for demanding equipment such as excavators, large bulldozers, wheel loaders, mining trucks, and rock crushers, where high torque and dependability under load are essential.
Power Generation: It serves as a robust prime mover for industrial generator sets, providing reliable prime and standby power for facilities ranging from data centers and hospitals to manufacturing plants and remote mining sites.
Marine & Industrial: The engine is also applied in marine auxiliary systems, pump drives, and other heavy industrial machinery that require a compact and resilient powerplant.
1. Proven PT Fuel System for Reliability
At its heart is the Cummins Pressure-Time (PT) fuel system, a mechanically governed, self-adjusting injection system renowned for its simplicity and robustness. This system provides precise fuel metering and timing, contributing to excellent fuel atomization, cleaner combustion, and reliable operation with minimal downtime.
2. Efficient Turbocharging and Cooling
Featuring turbocharging with air-to-air aftercooling (TTA), the engine forces a greater mass of cool, dense air into the cylinders. This advanced aspiration technology significantly boosts power density and combustion efficiency, leading to better fuel economy and lower emissions, while effectively managing thermal loads.
3. Durable Engine Architecture for Longevity
Designed for extended service life, the NT855-C400S20 incorporates replaceable wet cylinder liners that offer superior heat dissipation compared to dry liners and allow for straightforward in-frame overhauls without reboring the engine block. Its construction includes a high-strength alloy cast iron cylinder block and a four-valve-per-cylinder head design, which optimizes airflow for improved performance and durability.
The Cummins NT855-C400S20 is a heavy-duty 14-liter diesel engine engineered to deliver reliable, high-torque power in the world's most challenging environments. As part of the legendary NT855 series—known for millions of hours of service-proven operation—this turbocharged and aftercooled inline-six engine offers an optimal balance of performance, fuel economy, and renowned durability for critical industrial and commercial applications.
The NT855-C400S20 is built for a wide range of heavy-duty, continuous-use equipment. Its core applications span three major sectors:
Construction & Mining Machinery: This engine is a trusted power source for demanding equipment such as excavators, large bulldozers, wheel loaders, mining trucks, and rock crushers, where high torque and dependability under load are essential.
Power Generation: It serves as a robust prime mover for industrial generator sets, providing reliable prime and standby power for facilities ranging from data centers and hospitals to manufacturing plants and remote mining sites.
Marine & Industrial: The engine is also applied in marine auxiliary systems, pump drives, and other heavy industrial machinery that require a compact and resilient powerplant.
1. Proven PT Fuel System for Reliability
At its heart is the Cummins Pressure-Time (PT) fuel system, a mechanically governed, self-adjusting injection system renowned for its simplicity and robustness. This system provides precise fuel metering and timing, contributing to excellent fuel atomization, cleaner combustion, and reliable operation with minimal downtime.
2. Efficient Turbocharging and Cooling
Featuring turbocharging with air-to-air aftercooling (TTA), the engine forces a greater mass of cool, dense air into the cylinders. This advanced aspiration technology significantly boosts power density and combustion efficiency, leading to better fuel economy and lower emissions, while effectively managing thermal loads.
3. Durable Engine Architecture for Longevity
Designed for extended service life, the NT855-C400S20 incorporates replaceable wet cylinder liners that offer superior heat dissipation compared to dry liners and allow for straightforward in-frame overhauls without reboring the engine block. Its construction includes a high-strength alloy cast iron cylinder block and a four-valve-per-cylinder head design, which optimizes airflow for improved performance and durability.