Products
1.Reliability and durability
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 matching 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.
2.Fuel and money saving
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.
3.Safety and comfort
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.
4.High adaptability
It has automatic and manual parallel functions, with its performance meeting the relevant provisions of the General Technical Condition for Marine Diesel Generator Sets (GB/T13032-2010).
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Name |
Main Technical Parameters |
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Genset model |
CCFJ400J-W1 |
CCFJ350J-W |
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Power supply type |
Three-phase AC |
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Rated power kW |
400 |
350 |
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Rated voltage V |
400 |
400 |
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Rated current A |
721.7 |
631 |
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Rated frequency (Hz) |
50 |
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Rated power factor(COSφ) |
0.8（Lag） |
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Rated speed r/min |
1500 |
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Absolute value of steady-state voltage regulation % |
≤2.5 |
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Absolute value of transient voltage deviation (%) |
Sudden unloading 60% Rated current |
≤20 |
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Sudden load 60% Rated current |
≤15 |
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Voltage stabilization time (s) |
≤1.5 |
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Absolute value of voltage fluctuation rate % |
≤1 |
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Absolute value of transient speed regulation % |
Sudden load 0-50% |
≤10 |
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Sudden load 50-100% |
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Sudden unloading 100%-0 |
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Transient speed regulation stabilization time s |
≤5 |
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Steady-state speed regulation % |
≤5 |
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Absolute value of speed fluctuation rate% |
≤0.5 |
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Insensitivity of genset speed governing system % |
≤0.5 |
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Fuel consumption rate under rated conditions (g/(kW·h)) |
≤230 |
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Specific oil consumption g/(kW·h) |
≤1 |
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Fuel grade |
Summer: 0#, 10# light diesel of GB 19147-2016 premium grade or first grade;； |
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Winter: 0#, -10#, -20# and -35# light diesel of GB 19147-2016 premium grade or first grade (selected based on the ambient temperature)) |
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Oil grade |
Summer: 40CF, 15W/40CF; |
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Winter: 30CD, 10W/30CD or other diesel engine oil that is not inferior to Grade CF in GB 11122-2006 and suitable for the environment. |
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Start mode |
Electric start |
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Cooling mode |
Internal circulation：Closed circulating water cooling，External circulation：Open water cooling |
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Connection mode of motor winding |
Three-phase four-wire |
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Operating mode of genset |
Continuous |
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Operating environment conditions |
Ambient temperature |
45°C |
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Outboard water temperature |
32°C |
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Inclination angle |
Hell: 15°; roll: 22.5°; trim: 7.5°; pitch: 10° |
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Temperature rise |
Thermal classificationA |
55°C |
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Measurement method R |
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Short circuit |
The alternator and its excitation system can maintain at least 3 times the rated current for at least 2s under steady-state short-circuit conditions. |
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Overload |
50% overcurrent; 2 min |
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Fuel engine model |
YC6TD655L-C20 |
YC6TD600L-C20 |
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Rated power of diesel engine (kW) |
480 |
441 |
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Alternator model |
SB-HW4.D-400 |
SB-HW4.D-350 |
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（SAE1-14） |
（SAE1-14） |
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Rated power of motor (kW) |
400 |
350 |
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Genset weight (kg) |
3700 |
3600 |
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Diemension（Length × width × height） mm |
2818×1213×1775 |
2818×1213×1775 |
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Note: Dimension (L*W*H) may vary with the configuration. |
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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
1.Reliability and durability
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 matching 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.
2.Fuel and money saving
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.
3.Safety and comfort
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.
4.High adaptability
It has automatic and manual parallel functions, with its performance meeting the relevant provisions of the General Technical Condition for Marine Diesel Generator Sets (GB/T13032-2010).