Diesel engine 4.4TGM

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Overview
The 4.4TGM is a turbocharged auxiliary marine diesel engine designed to supply a vessel's onboard electrical and auxiliary power. It is engineered for rapid starting, sustained operation under heavy auxiliary loads and operation across wide ambient temperature ranges. A dedicated auxiliary engine like the 4.4TGM provides additional electrical power compared with relying on the propulsion engine for generation.

Features At A Glance

• Durability: Gear‑driven water pumps, inserted valve seats, oil spray‑cooled pistons and compact plate oil cooler extend component life.
• Lower operating costs: 500‑hour service intervals, low fuel consumption and competitive parts availability reduce total cost of ownership.
• Low noise & emissions: Designed to meet multiple emission standards while maintaining low acoustic levels.
• Reliable starting and operation: High compression ratio for fast starts; operational capability up to 50°C ambient and seawater up to 38°C; cold‑start aids to −15°C.

Key Specs (highlight)
Minimum Power: 56.4 kW
Maximum Power: 63.6 kW
Bore: 105 mm

Standard Equipment (selected)

• Air inlet system: Air filter; Closed engine breather system; Water‑jacketed exhaust manifold
• Control system: Electronic governor (control to ISO 8528 G3); Wiring harness with 23‑way connector
• Cooling system: Deaeration header tank; Gear‑driven fresh and auxiliary water pumps; Thermostatically controlled cooling water system
• Flywheels and flywheel housing: Backend - SAE3
• Fuel system: Rotary fuel injection pump; Spin‑on fuel oil filter and separator
• Oil system: Flat‑bottom cast iron sump; Spin‑on full‑flow lubrication oil filter with integral oil cooler (left side)

Product Specifications — Power Rating
Minimum Power: 56.4 kW
Maximum Power: 63.6 kW
Maximum Torque: 371 Nm @ 1800 rpm
Rated Speed: 1500–1800 rpm

Product Specifications — General
Bore: 105 mm
Stroke: 127 mm
Displacement: 4.4 l
Aspiration: Turbocharged
Rotation from Flywheel End: Anti‑clockwise
Total Coolant Capacity: 15 l
Total Lubricating Capacity: 8.5 l
Combustion System: Direct injection
Compression Ratio: 19.3:1
Cycle: 4‑stroke
Cooling System: Liquid
Number of Cylinders: 4 inline

Product Specifications — Engine Dimensions*
Dry Weight: 478 kg
Wet Weight: 505 kg
Length (to flywheel housing): 844 mm
Height: 920 mm
Width: 688 mm

Disclaimer / Notes
Final dimensions and weights depend on selected options and configuration.

Technical specifications

• Model: 4.4TGM
• Type: Auxiliary marine diesel engine
• Displacement: 4.4 l
• Minimum power: 56.4 kW (at specified rating)
• Maximum power: 63.6 kW (at specified rating)
• Maximum torque: 371 Nm @ 1800 rpm
• Rated speed: 1500–1800 rpm
• Bore x Stroke: 105 mm x 127 mm
• Cylinders: 4 inline
• Aspiration: Turbocharged
• Combustion: Direct injection
• Compression ratio: 19.3:1
• Cooling: Liquid; total coolant capacity 15 l
• Lubrication capacity: 8.5 l
• Dry / Wet weight: 478 kg / 505 kg
• Dimensions (L x W x H): 844 mm x 688 mm x 920 mm (length to flywheel housing)
• Operating ambient capability: up to 50°C ambient and seawater up to 38°C; starting aids to −15°C