YC4D Series marine engine

• This series diesel engine is developed by Yuchai adopting the technology of FEV, Germany;
• The cylinder block and head are made of the alloyed cast iron with high degree of the strength; the integral crankshaft & sliding bearing are featured by compact construction, smaller weight and higher reliability; the overhaul period is over 10000 hours;
• The index of the fuel consumption is very low by adopting the A type high pressure fuel pump with a higher injection pressure;
• Consumption of the oil is very low by adopting the Yuchai’s special sealing technology for the piston rings;
• It is an ideal power which can be used as the main engine for small-sized marine and fishery vessels and used as gen-sets for 20—40kW.

Key Parameter :

Model		YC4D35C	YC4D40C		YC4108CA	YC4D50C	YC4108C	YC4108ZC		YC4D75C
Type		Vertical,in-line , water-cooled, four stroke
Intake way		自然吸气						废气涡轮增压
No. of cylinders X Bore X Stroke（mm）		4×108×115
Piston displacement（L）		4.214
Compression ratio		17:1
Continuous power/Speed（kW/r/min）		27/1200	29.3/1200		32/1500	35.2/1500	40/1500	50/1500		55/1800
1H power/Speed（kW/r/min）	Engine	29.7/1239	32.23/1239		35.2/1548	38.7/1548	44/1548	55/1548		60.5/1858
	Gensets	/	/		/	/	44/1500	55/1500		/
Min. specific fuel oil consumption（g/kW·h）		≤218						≤210
Specific lube oil consumption(g/kW·h)		≤0.8
Crankshaft rotation direction(seen from power output end)		Anticlockwize
Net Weight (kg)		370						390
Dimenson(L× B×H)mm		986×730×948						986×730×1254
Matched reduction gearbox		Advance gearbox：MB142、40A、MB170、MBS170etc.
Specification of connection with the gearbox		Casing：SAE3# Flywheel：11.5〞
Main application		Fishing boat's engine		Fishing boat's engine	Passenger and cargo ship's engine	Fishing boat's engine	Passenger,cargo ,fishing ship's engine or gensets	Passenger,cargo ,fishing ship's engine or gensets	Passenger,cargo ,fishing ship's engine