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Library› Engine Room› Main Engines (4-Stroke)› Main Engine 4-Stroke› Mitsubishi S12R-Z3MPTAW
Mitsubishi

S12R-Z3MPTAW

Main Engine 4-Stroke · Main Engines (4-Stroke)

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Specifications

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Type4-Cycle, Water Cooled
AspirationTurbo-Charged, Inter Cooler
Cylinder Arrangement60°V
No.of Cylinders12
Bore mm(in.)170 (6.69)
Stroke mm(in.)180 (7.09)
Displacement Liter(in.3)49.03 (2992)
Compression Ratio14.5 : 1
Dry Weight - Engine only - kg(lb)5320 (11731)
Wet Weight - Engine only - kg(lb)5600 (12348)
Idling Speed -RPM600～650
Maximum Overspeed Capacity - RPM2100
Moment of Inertia of Rotating Components J- kg・m2(lbf・ft2)20.22 (1920)
Cyclic Speed Variation with Flywheel at 1800RPM1/683
Cyclic Speed Variation with Flywheel at 1500RPM1/448
Cyclic Speed Variation with Flywheel at 1200RPM1/77
Maximum Bending Moment at Rear Face of Flywheel Housing - N・m(lbf・ft)4413 (3256)
Maximum Intake Air Restriction (Includes piping)- kPa (in.H2O)3.92 (15.7)
Maximum Allowable Intake Air Temperature- oC (oF)45 (113)
Maximum Allowable Back Pressure - kPa (in.H2O)4.41 (17.7)
Oil Pressure at ldle - MPa (psi)0.2～0.3 (29～43)
Oil Pressure at Rate Speed - MPa (psi)0.5～0.6 (71～86)
Maximum Oil Temperature- oC (oF)110 (230)
Oil Capacity of Marine Pan High - liter (U.S.gal)200 (52.8)
Oil Capacity of Marine Pan Low - liter (U.S.gal)158 (41.7)
Cranking Ampere of Starter at 5 C (41oF) / -5oC (23oF)380 × 2 / 480 × 2
Maximum Suction Head of Feed Pump - kPa (in. Hg)14.7 (4.3)
Maximum Level of Fuel Tank - m5.0 Continuous Use
Minimum Fuel Oil Supply Pipe Inner Diameter - mm(in.)20 (0.79)
Minimum Fuel Oil Leak Pipe Inner Diameter - mm(in.)20 (0.79)
Battery Charging Alternator - V-Ah24-35
Starting Motor Capacity - V -kW24-7.5×2
Recommended Minimum Battery Capacity300 At 5oC (41oF) and above - Ah
Manufacturer documentation

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“4-Cycle, Water Cooled Turbo-Charged, Inter Cooler (Fresh water to Cooler) 60°V 12 170 (6.69) 180 (7.09) 49.03 (2992) 14.5 : 1 5320 (11731) 5600 (12348)”

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