Diesel engine 4.4GM

4-cylinderin-linedirect injection

Overview
The 4.4GM auxiliary marine engine is designed for on-board electrical generation and other auxiliary duties on commercial and fishing vessels. It delivers reliable starting, controlled emissions and low noise levels while providing the continuous power required for deck machinery and onboard systems.

Features At A Glance

• Durability - Gear-driven water pumps, inserted valve seats and oil-spray-cooled pistons extend service life.
• Low cost of ownership - Competitive engine and parts pricing, 500-hour service intervals and efficient fuel consumption reduce operating costs.
• Low noise and low emissions - Designed to meet multiple emission standards with acoustic performance suitable for auxiliary applications.
• Reliable power - High compression ratio for rapid starts; operable in ambient temperatures up to 50°C and seawater up to 38°C. Fuel-heating starting aid available to -15°C.

Key Specs
Minimum Power: 42.7 kW (57.3 hp)
Maximum Power: 49.1 kW (65.8 hp)
Bore: 105 mm (4.1 in)

Standard Equipment

• 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-bottomed cast iron sump
• Spin-on full-flow lubrication oil filter with integral oil cooler (left side)

Product Specifications - Power Rating
Minimum Power: 42.7 kW (57.3 hp)
Maximum Power: 49.1 kW (65.8 hp)
Maximum Torque: 286.5 Nm @ 1800 rpm (211.3 lb-ft @ 1800 rpm)
Rated Speed: 1500–1800 rpm

Product Specifications - General
Bore: 105 mm (4.1 in)
Stroke: 127 mm (5 in)
Displacement: 4.4 L (286.5 in³)
Aspiration: Naturally aspirated
Rotation from flywheel end: Anti-clockwise
Total lubricating capacity: 8.5 L (2.2 US gal)
Compression ratio: 18.23:1
Total coolant capacity: 15 L (4 US gal)
Number of cylinders: 4 inline
Combustion system: Direct injection
Cooling system: Liquid
Cycle: 4-stroke

Product Specifications - Engine Dimensions*
Width: 691 mm (27.2 in)
Length - Flywheel Housing: 844 mm (33.2 in)
Height: 875 mm (34.4 in)
Wet Weight: 489 kg (1,078 lb)
Dry Weight: 462 kg (1,018.5 lb)

Disclaimer
Final dimensions dependent on selected options.

Technical specifications

• Model: 4.4GM
• Minimum Power: 42.7 kW (57.3 hp)
• Maximum Power: 49.1 kW (65.8 hp)
• Maximum Torque: 286.5 Nm @ 1800 rpm
• Rated Speed: 1500–1800 rpm
• Bore x Stroke: 105 mm x 127 mm
• Displacement: 4.4 L
• Number of Cylinders: 4 inline
• Aspiration: Naturally aspirated
• Combustion: Direct injection
• Cooling: Liquid
• Lubricating Capacity: 8.5 L
• Coolant Capacity: 15 L
• Wet Weight: 489 kg
• Dry Weight: 462 kg