Products
Power range：441kW~588kW
Applications：inland or offshore fishing boats and transport ships
Yuchai 6TD product, following the demanding specifications for mechanical development verification, has been subject to a cumulative durability bench test of 20,000 hours. The engine block is made of alloy cast iron, with higher strength. The integral forged steel crankshaft improves fatigue strength and wear resistance. The structure of one head for one cylinder ensures easy maintenance. The cylinder head bolts are evenly distributed and stressed. The valve system, high camshaft arrangement, short and thick push rod, and roller tappet make the product highly reliable.
The application of the four-valve technology ensures substantially increased flow area of intake and exhaust, and the central fuel injector enables more uniform atomization, and more complete combustion; The turbocharged & intercooled + electronically-control pump technology and accurate electronic control help the user to get the most out of every drop of fuel; The Holset/Lianxin turbocharger enables wide economic operating conditions, a more than 15% reduction in the mechanical loss and less pumping loss, as well as a 10-15% reduction in fuel consumption compared with engines at the same power level.
The application of the four-valve technology effectively reduces the intake and exhaust noise of the engine; The rear gear chamber and advanced point-line meshing gear technology reduce the mechanical noise of the powertrain.
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Item |
YC6TD Series marine diesel engine |
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Model |
YC6TD800L-C20 |
YC6TD760L-C20 |
YC6TD650L-C20 |
YC6TD600L-C20 |
YC6TD475L-C20 |
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Number of cylinders - bore × stroke (mm) |
6-152×180 |
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Displacement (L) |
19.59 |
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Number of valves per cylinder |
4 |
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Induction system |
Turbocharged & intercooled |
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Rated power/speed (kW(Ps)/r/min) |
588(800)/1800 |
559(760)/1800 |
478(650)/1800 |
441(600)/1500 |
348(475)/1800 |
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Overload power/speed (kW(Ps)/r/min) |
646.8(880)/1858 |
614.9(835)/1858 |
525.8(715)/1858 |
485.1(660)/1548 |
382.8(520)/1858 |
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Min. specific fuel consumption of external characteristics (g/kW·h) |
≤195 |
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Certificates |
ZC、CCS、EIAPP、 China II |
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Diemension (L×W×H) (mm) |
1986×1319×1696 |
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Dry weight (kg) |
2200 |
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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
Yuchai 6TD product, following the demanding specifications for mechanical development verification, has been subject to a cumulative durability bench test of 20,000 hours. The engine block is made of alloy cast iron, with higher strength. The integral forged steel crankshaft improves fatigue strength and wear resistance. The structure of one head for one cylinder ensures easy maintenance. The cylinder head bolts are evenly distributed and stressed. The valve system, high camshaft arrangement, short and thick push rod, and roller tappet make the product highly reliable.
The application of the four-valve technology ensures substantially increased flow area of intake and exhaust, and the central fuel injector enables more uniform atomization, and more complete combustion; The turbocharged & intercooled + electronically-control pump technology and accurate electronic control help the user to get the most out of every drop of fuel; The Holset/Lianxin turbocharger enables wide economic operating conditions, a more than 15% reduction in the mechanical loss and less pumping loss, as well as a 10-15% reduction in fuel consumption compared with engines at the same power level.
The application of the four-valve technology effectively reduces the intake and exhaust noise of the engine; The rear gear chamber and advanced point-line meshing gear technology reduce the mechanical noise of the powertrain.