Specifications + Dimensions

50 Hz / 1500 rpm: 90 kW
105 kW
116 kW
127 kW
Voltage Regulation:+/- 0.5%
Frequency Droop Control:Isochronous 0%
Phase and Power Factor:Three phase -
0.8 power factor std.
Generator Full Load Temperature Rise:110°C temperature rise
at 45°C ambient
Inline Cylinders/ Aspiration: I-4 / Turbocharged + Aftercooled
Displacement - in³ (ltr):293 (4.8)
Bore/Stroke - inches (mm): 4.13/5.39 (105/137)
Fuel Injection Pump Type and Control:Electronic (HPCR)
(Heat Exchanger standard)
Heat Rejection to Jacket Water -1500 rpm BTU min:
M4105A1
M4105A2
M4105A3
M4105A4

2342
2908
3090
C/F
Freshwater Pump Capacity - gpm (lpm):50 (190)
Heat Exchanger Approx. Cooling Capacity - gal (ltr):9.7 (37)
Engine Only Approximate Capacity - gal (ltr):8.2 (31)
Raw Water Pump Capacity - gpm (lpm):40 (151)
Max. Raw Water Pump Suction Head Lift - in (mm):39 (1000)
Raw Water Pump Inlet Hose ID - in (mm):2 (51)
Min. Raw Water Inlet/Discharge Thru-Hull - in (mm):2 (51)
(12V standard, 24V optional)
DC Starting Voltage - Standard (Optional):12 (24)
Min. Battery Capacity - amp hr:90
Min. Battery Size - CCA:750
Starter Rolling Amps at 0°C - 12V (24V):420 (225)
12 Volt Battery Cable Size Up to 5ft (1.5m) - mm²:50
Air Consumption - m³/m (cfm):
M4105A1
M4105A2
M4105A3
M4105A4

4.1 (146)
4.4 (157)
4.6 (162)
4.8 (169.8)
Approx. Heat Radiated to Air; Engine & Generator - BTU/min:
M4105A1
M4105A2
M4105A3
M4105A4

1304
1529
1655
1799
Generator Cooling Air Flow 1&3Ø - m³/m (cfm):
M4105A1-3
M4105A4

15 (528)
17.4 (614)
Exhaust Gas Volume - kg/hr (lbs/min):
M4105A1
M4105A2
M4105A3
M4105A4

431 (15.8)
473 (17.4)
507 (18.6)
540 (19.8)
Exhaust Gas Temp. - C° (F°):
M4105A1
M4105A2
M4105A3
M4105A4

462° (864°)
482° (899°)
499° (930.2°)
524° (975.2°)
Max. Exhaust Back Pressure - in H²O (mm H²O):30 (762)
Wet Exhaust Elbow OD- in (mm):5 (127)
Dry Exhaust Elbow - in (mm):4 (102)
Fuel Injection Pump Type & Control:Electronic (HPCR)
Min. Suction Line Size - in (mm):0.375 (10)
Min. Return Line Size - in (mm):0.375 (10)
Max. Fuel Transfer Pump Suction Lift - ft (m):3.28 (1)
Max. Fuel Flow to Transfer Pump - gph:
M4105A1
M4105A2
M4105A3
M4105A4

28.3
25.3
25.8
C/F
Max. Fuel Return Line - psi:5
Approx. Fuel Rate at Full Load - gph (lph):
M4105A1
M4105A2
M4105A3
M4105A4

7.5 (28.35)
8.73 (30.3)
9.2 (36.4)
10.64 (48)
 All Models
Continuous - Fore/Aft:10°
Continuous - Side to Side:22.5°
Length - in (mm)73.9 (1878)
Length w/ Sound Enclosure - in (mm)75.4 (1916)
Width - in (mm)36.17 (919)
Width w/ Sound Enclosure - in (mm)42.0 (1067)
Height - in (mm)43.2 (1096)
Height w/ Sound Enclosure - in (mm)45.0 (1143)
Weight - lbs (kg)
M4105A1-3
M4105A4

2604 (1181)
2888 (1310)
Weight w/ Sound Enclosure- lbs (kg)
M4105A1-3
M4105A4

3162 (1421)
3753 (1706)

Features + Benefits

  • IMO Tier II at 50 Hz compliant
  • Inline four cylinder, four cycle, liquid cooled, overhead 4 valve per cylinder, marine diesels based on heavy-duty industrial engine blocks
  • Balanced, forged crankshaft for long life
  • Replaceable, wet cylinder liners for long life and low rebuild cost
  • Replaceable valve seats and guides
  • Three ring aluminum alloys pistons with Keystone piston ring reduces carbon buildup under light loads
  • Mass balancer improves vibration levels
  • Torsional crankshaft dampers help ensure smooth operation
  • A single poly-vee drive belt powers the alternator
  • Gear driven jacket water pump
  • Positive displacement gear-type oil pump.
  • Full flow, spin-on oil filter.
  • Oil spray cooling reduces piston crown temperature.
  • Jacket-water, plate-type, full flow oil cooler reduces heat and prevents lube oil breakdown.
  • Large capacity oil pan.
  • A closed loop crankcase vent traps oil vapor to keep the engine room clean.
  • Washable High flow air filter silences intake noise
  • Turbocharger with jacket water cooled turbine housings for safety
  • Jacket water aftercooler provides optimized combustion and output
  • Heat exchanger cooling standard
  • optional keel cooling on jacket water aftercooled models
  • Gear driven, raw water pump with flexible impeller with bronze housing and stainless-steel shaft
  • High-capacity cast aluminum expansion tank
  • Two thermostats with staggered opening for quick warm-ups and reduced temperature cycling
  • Cast-iron exhaust manifold for reliable operation and durability
  • Isolated ground 12 and 24 volt DC system
  • Large frame alternator to meet electrical requirements
  • Harness mounted fuse protection, starter motor and alternator with adjustable regulator
  • Standard TSC control panel with, RPM, coolant temperature gauge, oil pressure gauge, DC voltage meter, start-stop
  • Low oil pressure and high coolant temperature alarm system and safety shut down
  • Direct coupled single bearing, 12 lead, re-connectable AC generator
  • Class “H” insulation, marine grade shafts and 110°/45° heat rise ratings
  • Automatic voltage regulator, +/- 0.5% regulation over the entire range from no load to full load
  • Configured for isochronous operation with integral electronic governor control supplied ECU. Droop operation available
  • Meets 300% short circuit protection without needing additional PMG
  • Welded steel base frame with integrated drip pan
  • Sparkling white IMRON® polyurethane paint
  • Operator’s and parts manuals
  • Optional sound enclosure for sound for sound attenuation in a compact design
  • Compound mounts for increased vibration isolation

Note:

  1. Prime kW ratings for 3Ø at 0.8 power factor. Consult factory for deration factors.
  2. Based on prime kW rating at 1500 RPM. Fuel rate may vary depending on operating conditions.

Dimensions are subject to change without notice, they are not intended for installations.

Contact a factory representative for the current installation data.

© Northern Lights, Inc. 2018