Products
Power range：40kW~162kW
Applications：inland transport ship, 9~12m yacht, passenger ship, etc.
The engine block and cylinder head are made of alloy cast iron, with high strength; with an integral crankshaft, the product is subject to in-depth reliability development, ensuring the overhaul period of over 10000 hours.
The application of in-cylinder 3D combustion CFD technology ensures combustion and emission optimization and more adequate combustion. The HPCR system, high-performance combustion chamber, and intake swirl ensure that the fuel consumption index is far superior to that of domestic products at the same power level. Yuchai's proprietary piston ring seal technology ensures the consumption of lubricating oil is above 50% lower than that of domestic products at the same power level.
Digital intelligent local and remote monitoring instruments are equipped to monitor and protect the operation of the engine in real time; The integral cast iron fresh water cooling jacket exhaust pipe ensures lower cabin temperature and safer use.
The application of full electronically-control technology makes the product meet China II and IMO II emission standards for marine engines.
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Item |
YC4A Series marine diesel engine |
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Model |
YC4A220L-C20 |
YC4A200L-C20 |
YC4A165L-C20 |
YC4A120L-C20 |
YC4A140Z-C20 |
YC4A120Z-C20 |
YC4A100Z-C20 |
YC4A70Z-C20 |
YC4A55Z-C20 |
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Number of cylinders - bore × stroke (mm) |
4-108×132 |
4-108×132 |
4-108×132 |
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Displacement (L) |
4.837 |
4.837 |
4.837 |
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Number of valves per cylinder |
2 |
2 |
2 |
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Induction system |
Turbocharged & intercooled |
Turbocharged & intercooled |
Turbocharged & intercooled |
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Rated power/speed (kW(Ps)/r/min) |
162(-220)/2300 |
147(200)/2300 |
120(165)/1800 |
90(120)/1500 |
103(140)/2300 |
90(120)/2000 |
75(100)/1800 |
53(70) /1500 |
40(55) /1500 |
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Overload power/speed (kW(Ps)/r/min) |
178.2(-240)/2374 |
161.7(-220)/2374 |
132(-180)/1858 |
99(-135)/1548 |
113.3 (-155)/2374 |
99(135)/2064 |
82.5(110)/1858 |
58.3(80) /1548 |
44(-60)/1548 |
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Min. specific fuel consumption(g/kW·h) |
≤200 |
≤200 |
≤200 |
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Certificates |
ZC、CCS、EIAPP、China II |
ZC、CCS、China II |
ZC、CCS、China II |
ZC、CCS、China II |
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Diemension (L×W×H) (mm) |
570 |
570 |
570 |
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Dry weight (kg) |
1143×853×1120 |
1143×853×1120 |
1076×853×1120 |
1076×853×1120 |
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Large displacement, high gradeability and high efficiency
Bosch high pressure common rail (HPCR) fuel injection system with the injection pressure up to 1,600 bar, achieving multiple injections and accurate control
High-strength alloy cast iron cylinder head
General engine block + independent crankcase
Long B10 service life design, which can be more than 500,000 km
Reduction soft meshing starter, ensuring smooth start
A framed engine body structure, ensuring good rigidity and small vibration
Damping gear
The engine block and cylinder head are made of alloy cast iron, with high strength; with an integral crankshaft, the product is subject to in-depth reliability development, ensuring the overhaul period of over 10000 hours.
The application of in-cylinder 3D combustion CFD technology ensures combustion and emission optimization and more adequate combustion. The HPCR system, high-performance combustion chamber, and intake swirl ensure that the fuel consumption index is far superior to that of domestic products at the same power level. Yuchai's proprietary piston ring seal technology ensures the consumption of lubricating oil is above 50% lower than that of domestic products at the same power level.
Digital intelligent local and remote monitoring instruments are equipped to monitor and protect the operation of the engine in real time; The integral cast iron fresh water cooling jacket exhaust pipe ensures lower cabin temperature and safer use.
The application of full electronically-control technology makes the product meet China II and IMO II emission standards for marine engines.