Cummins Marine NTA855-M400 Engine

The Cummins NTA855-M400(1800 RPM) Marine Engine is a 6-cylinder inline, 14-liter four-stroke engine with a 140 mm (5.5 in) bore and a 152 mm (6.0 in) stroke. Equipped with a PT Fuel System, turbocharger, and Water-Air intercooler, this marine diesel engine complies with IMO-NOx requirements set by the International Maritime Organization (IMO). It delivers continuous power of 400 HP (298 kW) at 1800 RPM and offers a maximum torque of 1385 N.m at 1500 RPM.

Key features and advantages

1. The NT-series marine engine is characterized by a stable performance, low failure rate and a high level of reliability. It has optimum detection characteristics, high injector pressure, high cooling, fast acceleration, a strong cooling system, high cooling pressure, and possesses favourable transient response.
2. The engine meets the requirements for IMO Tier2 emission regulations. It adopts CMI’s high-efficiency turbocharger and intercooler, which make it run efficiently. Low-temperature technology is used to reduce fuel consumption and emissions while improving engine reliability.
3. It can achieve energy savings with high efficiency and high-injection pressure. The ESTC electronic timing control valve equipped with the system can precisely adjust and supplement the timing, and improve the color of the combustion smoke at low idle speeds.
4. Detachable components, compact structure, modular design overall, block integration.
5. The cylinder block and head are designed in an integrated way, resulting in a low failure rate. They also have a low parasitic force, a low parasitic torque, and exemplary durability.

Hawks Parts offers comprehensive life cycle services for customers, including design, power system supply, installation, commissioning, after-sales service training, spare parts supply, troubleshooting, and overhaul technical support. Additionally, We provide upgrading services for water-cooled exhaust systems, meeting the specific requirements of passenger boat projects and ensuring optimal engine performance and longevity.

NTA855-M400 – General Information

Model: NTA855-M400

Type: 6 Cylinders in Line, 4 strokes

Displacement: 14 L

Bore * Stroke: 140 * 152

Net Weight (with flywheel & alternator): 1430 Kg

Overall Dimension: 1809mm*881mm*1598mm

Manufacture Plant: Chongqing Cummins Plant

Engine Configuration No.: D0903348MX02

NTA855-M400 – Technical Specification

Certification: CCS/IMO Certificates

Aspiration: Turbocharged/Aftercooled

Fuel System: Cummins Pressure Time (PT Pump)

Starting System: Electrical Start (24V/100AMP)

Governor Type: Mechanical Control

Compression Radio: 14.5:1

Lowest Starting Temp Without auxiliary system: -12℃

Cooling Method: Sea water pump, Heat exchanger, Water cooled

NTA855-M400 – Performance Data

Rated Power/Speed: 298 kW/400HP

Rated Speed: 1800/2100 rpm

Rating Type: Continuous Running Power

Max Torque/Speed (1800 rpm): 1385 N.m @ 1500 rpm

Max Torque/Speed (2100 rpm): 1491 N.m @ 1500 rpm

Low Idle Speed: 575-675 rpm

High Idle Speed (1800): 1962-2106 rpm

High Idle Speed (2100): 2289-2457 rpm

Fuel Consumption (Running Speed): ≤ 72 L/hr

Cummins NTA855 Engine Seires