W Series Marine Engine

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Description
The W series engine is designed for meeting the high power demands of heavy duty marine power systems. It is a new generation of marine diesel engine which is researched and developed on the basis of military products, and by introducing and absorbing internationally advanced technology. Its various technical indexes all have reached advanced levels.

This series engine is characterized by outstanding fuel economy, high torque reserve, compact structure, high reliability, good emission, etc. It is widely used in inland and coastal shipping, fishing boats, working ships, passenger ships and other ships, as well as 400-600KW marine generator sets.

Outline dimensional drawing

SC33WL: 2551mm W: 1283mm H: 1898mm

Technical parameters

Model	Aspiration method	Continuous power/speed kW/r/min	Overload power/speed kW/r/min	Unlimited Navigation Areas rated power/speed kW/r/min	Unlimited Navigation Areas overload power/speed kW/r/min	Min.fuel consumption g/kW.h	Oil consumption g/kW.h	Weight kg	Notes
SC33W680CA2	TA	500/1350	550/1390	490/1350	539/1390	195	≤0.6	3400	Main engine
SC33W825CA2	TA	605/1500	665/1545	588/1500	647/1545	195	≤0.6	3400	Main engine
SC33W680.1CA2	TA	500/1200	550/1236	/	/	195	≤0.6	3400	Main engine
SC33W625CA2	TA	460/1000	506/1030	/	/	195	≤0.6	3400	Dual-turbocharger main engine
SC33W680.2CA2	TA	500/1000	550/1030	/	/	195	≤0.6	3400	Dual-turbocharger main engine
SC33W680.1CA2	TA	500/1200	550/1236	/	/	195	≤0.6	3400	Dual-turbocharger main engine
SC33W735.1CA2	TA	540/1000	594/1030	/	/	195	≤0.6	3400	Dual-turbocharger main engine
SC33W770CA2	TA	565/1000	622/1030	/	/	195	≤0.6	3400	Dual-turbocharger main engine
SC33W825.2CA2	TA	605/1200	665/1236	/	/	195	≤0.6	3400	Dual-turbocharger main engine
SC33W825.1CA2	TA	605/1350	665/1390	/	/	195	≤0.6	3400	Dual-turbocharger main engine
SC33W880.1CA2	TA	650/1350	715/1390	/	/	195	≤0.6	3400	Dual-turbocharger main engine
SC33W880CA2	TA	650/1500	715/1545	/	/	195	≤0.6	3400	Dual-turbocharger main engine
SC33W950CA2	TA	700/1500	770/1545	/	/	195	≤0.6	3400	Dual-turbocharger main engine
SC33W1000CA2	TA	735/1500	809/1545	/	/	195	≤0.6	3400	Dual-turbocharger main engine

Bore × stroke (mm)	Displacement (L)	Type	Aspiration	Steady speed governing rate (%)	Idling (r/min)	Exhaust temperature (℃)	Compression ratio	Oil capacity (L)
SC33W 180×215	33	In-line, 6-valve	TA-Turbocharged and intercooler	0%-5%	550	≤550	15:01:00	75

Note

Flywheel house and flywheel are SAED# and SAE1B#.
The high pressure oil pipe is two-layer.

Features

Four-valve per cylinder, P11 high quality oil pump and double turbocharger configuration can increase air flow to make the combustion more full. The minimum specific fuel consumption is 193g/kW.h and the oil consumption is 0.3g/kW.h,delivering low operating costs.
With a gantry type cylinder block structure and rear gear chamber, this engine has features of compact structure, high overall rigidity and smooth operation. And it is strictly checked and verified according to MHI standard with high reliability. And its power has improved by 17% compared with the domestic similar products. The torque is more than 4500N.m, the power covers a wide range, and the acceleration performance is good.
This engine is equipped with dual-layer high-pressure oil pipe, dual-booting flywheel house with optional single and dual booting and optional electric/manual priming oil pump, having complete configuration and wide application.
W series engine adopts one cylinder and one head structure and the overall appearance is simple, with good accessibility and convenient maintenance.

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diesel engine, SDEC engine, commercial engine, industrial engine