Chapter 1 General 2. Specifications 3JH2 Series Printed in Japan A0A1015-0302 Printed in Japan A0A1015-0302 1-3-1 Model Unit 3JH25A 3JH30A Type ___ Vertical 4-cycle water cooled diesel engine Combustion system ___ Direct injection Aspiration ___ Normal aspiration Number of cylinders ___ 3 Bore × stroke mm 82 × 86 Displ acement 1.303 One hour rating output (DIN6270B) flywheel output Output/crankshaft speed kW(PS)/rpm 20.2/3300 (27.5/3300) 24.3/3000 (33.0/3000) Brake mean effective pressure MPa(kgf/cm2) 0.539 (5.50) 0.713 (7.27) Piston speed m/sec.
9.5 8.6 Continuous rating output (DIN6270A) flywheel output Output/crankshaft speed kW(PS)/rpm 18.4/3200 (25/3200) 22.1/2900 (30/2900) Brake mean effective pressure MPa(kgf/cm2) 0.506 (5.016) 0.670 (6.83) Piston speed m/sec. 9.2 8.3 Compression ratio ___ 18.1 Fire order ___ 1 — 3 — 2 — 1 Fuel injection pump ___ YPES-CL Fuel injection timing (b.T.D.C.) degree. 19±1 Fuel injection pressure MPa(kgf/cm2) 19.6±0.5(200±5) Fuel injection nozzle ___ Hole type Direction of rotaion (Crankshaft) ___ Counter-clock wise viewed from stern Power taka off ___ At Flywheel side Cooling system ___ Constant high temperature fresh water cooling Fresh water : Centrifugal pump See water :
Rubber impeller pump Lubrication system ___ Forced lubrication with trochoid pump Starting system Starting motor V-kW DC 12V-1.8kW AC generator V-A 12V-35A Dimensions (with KM35P1) Overall length mm 730 770 Overall width mm 545 Overall height mm 680 Engine weight without marine gear (dry) kg 185 190 Lubricating oi l capacity Effect/max. 0.9 / 7.0 Cooling water capacity (Fresh water) Fresh water tank 4.4 Sub tank 0.8