Explore the Cummins B5.9CMII122 marine diesel engine, designed for continuous duty applications with 90 kW (121 bhp) rated power and 1800 rpm rated speed. Compliant with IMO Tier II NOx requirements, this engine offers exceptional performance and reliability for your marine operations.

Product Description

The Cummins B5.9CMII122 is a high-performance marine diesel engine built for continuous duty applications. With its 5.9-liter displacement and 90 kW (121 bhp) rated power, this engine delivers exceptional performance and reliability in various marine operations. The power unit is turbocharged for enhanced power and efficiency, and its fuel system is designed for high-pressure common rail (HPCR) injection, ensuring optimal fuel consumption and reduced emissions. The B5.9CMII122 marine propulsion engine complies with the stringent IMO Tier II NOx requirements and China Marine Emission Regulation Stage II GB15097-2016, making it an environmentally friendly choice for your marine applications.

Specifications:

General Engine Data:

• Engine Model: Cummins B5.9CMII122
• Rating Type: Continuous Duty
• Rated Engine Power: 90 kW (121 bhp)
• Rated Engine Speed: 2200 rpm
• Rated Power Production Tolerance: ±3%
• Rated Engine Torque: 478 N·m (353 lb·ft)
• Peak Engine Torque @ 1400 rpm: 590 N·m (435 lb·ft)
• Brake Mean Effective Pressure: 1022 kPa (148 psi)
• Indicated Mean Effective Pressure: 1200 kPa (174 psi)
• Maximum Allowable Engine Speed: 2440 rpm
• Fuel System: HPCR
• Fuel Consumption at Rated Speed: 29.9 L/hr[7.9 gal/hr]
• Certifications: IMO Tier II (Two) NOx requirements, China Marine Emission Regulation Stage II GB15097-2016

Dimensions and Weight:

• • Displacement: 5.9 liters (359 in³)
  • Bore x Stroke: 102 mm (4.02 in) x 120 mm (4.72 in)
  • Cylinders: 6
  • Compression Ratio: 17.3:1
  • Piston Speed: 7.2 m/sec (1417 ft/min)
  • Firing Order: 1-5-3-6-2-4
  • Weight – Engine Only: 543 kg (1197 lb)
  • Weight – Engine With Heat Exchanger System: 641 kg (1413 lb)

Product Advantages:

• High Efficiency: The engine’s turbocharging and HPCR fuel system provide excellent fuel efficiency, reducing operational costs.
• Reliability: Designed for continuous duty operations, ensuring uninterrupted service and long-lasting performance.
• Low Emissions: Compliant with IMO Tier II and China Marine Emission Regulation Stage II standards, minimizing environmental impact.
• Powerful Performance: Delivers 90 kW (121 bhp) of rated power at 1800 rpm, suitable for a wide range of marine applications.

Key Features:

• Continuous Duty Rating: Built for applications requiring uninterrupted service at full power.
• Certified Compliance: Meets international emission standards for environmentally responsible operations.
• Advanced Fuel System: HPCR fuel system for precise fuel injection and improved combustion efficiency.
• Turbocharged: Turbocharging enhances power output and overall engine performance.
• High-Pressure Common Rail (HPCR) Fuel System: Ensures precise fuel injection for improved combustion efficiency.
• Turbocharged: Increases power output and torque while maintaining fuel efficiency.
• Wide Operating Range: Capable of operating effectively across a broad range of speeds and loads.

Applications:

The Cummins B5.9CMII122 marine diesel engine is ideal for a variety of marine applications, including but not limited to:

• Pushboats
• Tugboats
• Net draggers
•  Commercial fishing vessels
• Workboats
• Pleasure crafts