Cummins 4BTA3.9-GM47 Marine Generator Set Product Description

Overview

The Cummins 4BTA3.9-GM47 is a robust, water-cooled, 4-stroke, turbocharged, and aftercooled marine auxiliary diesel engine designed for marine generator sets. Manufactured by Dongfeng Cummins Engine Co., Ltd. (DCEC), a 50:50 joint venture between Dongfeng Automobile Limited and Cummins USA, this engine delivers dependable power for marine applications, ensuring high performance and durability in demanding environments.

Key Specifications

• Engine Type: 4-cylinder, in-line, 4-stroke diesel

• Displacement: 3.9 liters

• Rated Power: 47 kW (63 hp) at 1500 RPM (50 Hz) or 1800 RPM (60 Hz)

• Standby Output: 44 kW (50 Hz) / 50 kVA

• Prime Output: 40 kW (50 Hz)

• Cooling System: Equipped with a seawater pump and heat exchanger (optional radiator, fan, or keel cooling system)

• Fuel System: BYC A fuel injection pump with electronic governor for precise fuel delivery

• Turbocharger: Garrett bypass high-efficiency turbocharger

• Bore x Stroke: 102 mm x 120 mm

• Compression Ratio: 17.3:1

• Aspiration: Turbocharged and aftercooled

• Dimensions: Approximately 1100 mm x 900 mm x 1300 mm (L x W x H, packaged)

• Weight: Varies by configuration (contact supplier for exact weight)

• Certifications: CCS (China Classification Society) and IMO compliant

Key Features

1. Reliable Performance

• Delivers consistent power output of 47 kW at 1500 RPM, ideal for marine generator sets requiring prime or standby power.

• Turbocharged and aftercooled design ensures efficient combustion and optimal performance under varying loads.

• Excellent transient performance for handling sudden load changes, critical for marine environments.

2. Durability and Robust Design

• Cylinder Block: Dragon door-style block without liner, featuring a water pump turbo housing for enhanced durability.

• Connecting Rod: High-strength alloy steel with inclined cutting for improved load-bearing capacity.

• Crankshaft: Alloy steel with full bearing support and hardened round corners for extended service life.

• Piston: Silicon-aluminum alloy with dual Ni-resist and oil cooling for superior heat resistance and longevity.

• Belt Drive System: Includes an automatic tensioner for reliable operation and reduced maintenance.

3. Marine-Specific Features

• Equipped with a seawater pump and heat exchanger for efficient cooling in marine environments.

• Optional cooling configurations (radiator, fan, or keel cooling) to suit various vessel requirements.

• Designed for marine auxiliary applications, ensuring compatibility with marine generator sets and power packs.

4. Certifications and Compliance

• Certified by the China Classification Society (CCS) and meets IMO standards, ensuring compliance with international marine regulations.

• Suitable for commercial and recreational marine applications requiring certified equipment.

5. Fuel Efficiency and Maintenance

• Optimized fuel system with a BYC A injection pump and electronic governor for improved fuel economy.

• Spin-on fuel filter with optional pre-filter water separator for enhanced fuel quality.

• Maintenance-friendly design with repairable cylinder bore and valve guide tubes, reducing downtime and costs.

6. Support and Availability

• Global Availability: Available in regions including Africa, Middle East, Asia Pacific, Europe, India, Latin America, and North America.

• Genuine Parts: Access to authentic Cummins 4BTA3.9-GM47 parts through authorized distributors, ensuring long-term reliability.

• Warranty: Typically includes a one-year warranty, with free replacement of easily damaged parts (excluding issues from incorrect operation). Extended spare parts support available post-warranty.

• After-Sales Service: Supported by local service stations and Cummins’ global network, with technical assistance from authorized agents.

• Lead Time: 5-7 days for 1-10 units; 7-10 days for 10-20 units.

7. Optional Configurations

• Available with marine power packs, alternators, control panels, or gearboxes for complete generator set solutions.

• Compatible with Stamford UCI 224 D alternator for efficient power generation.

• Optional marine gearbox, propeller, and shaft for integrated propulsion systems.

Applications

The Cummins 4BTA3.9-GM47 is ideal for:

• Marine generator sets for commercial vessels, yachts, and workboats

• Auxiliary power units for electricity generation on board

• Emergency or standby power in marine environments

Packaging and Delivery

• Packaging: Shipped in a wooden case (1 unit per case) with dimensions of 1100 mm x 900 mm x 1300 mm.

• Delivery Time: 5-7 working days for small orders (1-10 units); 7-10 days for larger orders (10-20 units).

• Payment Terms: Accepts T/T, L/C, Western Union, personal bank cards, and credit cards for flexible transactions.

Why Choose the Cummins 4BTA3.9-GM47?

• Proven Reliability: Backed by Cummins’ reputation for quality and performance in marine applications.

• Global Support: Extensive network of service centers and parts availability ensures minimal downtime.

• Competitive Pricing: Offered at agent wholesale prices through authorized Cummins distributors.

• Versatility: Suitable for a wide range of marine power generation needs with customizable configurations.