1. General 1.2 Specifications 2 2 Official engine model name unit 3YM30 3YM20 Company internal model name - 3YM30 3YM30C 3YM20 3YM20C Marine gear model - KM2P-1 SD20 KM2P-1 SD20 Use - Pleasure use Type - Vertical water cooled 4 cycle diesel engine Combustion system - Indirect injection Air charging - Naturally aspirated Number of cylinders - 3 Bore x stroke mm(inch) 76 x 82 (2.99 x 3.23) 70 x 74 (2.76 x 2.91) Displacement L 1.115 0.854 Continuous power Output at crankshaft / Engine speed kW(HP)/ min-1 20.1(27.3) / 3489 (at Fuel temp. 25°C) * 14.7(20.0) / 3489 (at Fuel temp. 25°C) * Fuel stop power Output at crankshaft / Engine speed kW(HP)/ min-1 22.1(30) / 3600 (at Fuel temp.
25°C) * 21.3(29.0) / 3600 (at Fuel temp. 40°C) ** 16.2(22) / 3600 (at Fuel temp. 25°C) * 15.3(20.8) / 3600 (at Fuel temp. 40°C) ** Output at propeller shaft / Engine speed kW(HP)/ min-1 21.4(29.1) / 3600 (at Fuel temp. 25°C) * 20.7(28.1) / 3600 (at Fuel temp. 40°C) ** 15.7(21.3) / 3600 (at Fuel temp. 25°C) * 14.9(20.2) / 3600 (at Fuel temp. 40°C) ** Installation - Flexible mounting Fuel injection timing deg b.T.D.C. FID 16±1 (FIC-Air : 18±1) FID 22±1 (FIC-Air :
24±1) Fuel injection opening pressure MPa (kgf/cm2) 11.8+0.98/ (120+10/ ) -0 -0 12.3+0.98/ (125+10/ ) -0 -0 Main power take off - At Flywheel side Direction of rotation Crankshaft - Counter-clockwise viewed from stern Propeller shaft (Ahead) - Clockwise viewed from stern Cooling system - Fresh water cooling with heat exchanger Lubrication system - Complete enclosed forced lubrication Cooling water capacity (fresh water) L(quart) Engine:4.9 (5.2), Coolant recovery tank : 0.8 (0.8) Engine:4.1 (4.3), Coolant recovery tank : 0.8 (0.8) Lubricating oil capacity (engine) Rake angle deg. at rake angle 8 deg. at rake angle 0 deg. at rake angle 8 deg. at rake angle 0 deg.
Total (Note 4) L(quart) 2.8 0/ -0.2 (3.0 0/ ) -0.2 2.5 0/ -0.2 (2.6 0/ ) -0.2 2.7 0/ -0.2 (2.9 0/ ) -0.2 2.4 0/ -0.2 (2.5 0/ ) -0.2 Effective (Note 5) 1.4 (1.5) 1.5 (1.6) 1.4 (1.5) 1.5 (1.6) Starting system Type - Electric Starting motor V-kW DC 12V-1.4 kW AC generator V-A 12V-60A (12V-80A optional) Engine Dimension Overall length mm(inch) 715 (28.1) 715 (28.1) 698 (27.5) 698 (27.5) Overall width 463 (18.2) 463 (18.2) 463 (18.2) 463 (18.2) Overall height 545 (21.5) 545 (21.5) 528 (20.8) 528 (20.8) Engine dry mass (include marine gear) kg 133 157 (with SD20) 120 144 (with SD20)