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Model | NC493QC1 | ||
Type | Inline,water-cooled,four-stroke,supercharged | ||
Oil supply type | Oil supply type | ||
Emission Standards | European IGB 18352.1 | ||
Number of Cylinders | 4 | ||
Combustion type | Direct injection | ||
Cylinder bore*piston stroke (mm) | 93*102 | ||
Cylinder working volume (L) | 2.771 | ||
Compression ratio | 17.5 | ||
Cylinder compression pressure(200r/min)MPa | ≥2.0, and each cylinder pressure difference ≤0.2 | ||
Minimum fuel consumption rate at full load g/KW.h | 224 | ||
Maximum power/speed (KW/r/min) | 67.6/3600 | ||
Maximum torque/speed (N.m/r/min) | 204/2000±100 | ||
No-load maximum speed (r/min) | 4200±100 | ||
Idle speed (r/min) | 750±20 | ||
oil consumption rate(g/h) | 2000r/min, 4/4 load | ≤20 | |
3600r/min, 4/4 load | ≤70 | ||
Dimensions: L*W*H | 742*601*768 | ||
Weight (kg) | 250 | ||
Cylinder working order | 1-3-4-2 | ||
valve phase | Intake valve open (before top dead center) | 24 | |
Intake valve closed (after bottom dead center) | 55 | ||
Exhaust valve open (before bottom dead center) | 54 | ||
Exhaust valve closed (after top dead center) | 26 | ||
valve clearance | Intake valve (cold state) mm | 0.3 | |
Exhaust valve (cold state) mm | 0.4 | ||
Starting method | Electric start | ||
cooling method | Closed, Water Cooled, Pressure, Circulation | ||
Lubrication method | pressure, splash compound | ||
Governor type | mechanical centrifugal | ||
Injector type | P type | ||
Injector opening pressure (MPa) | 18.1 | ||
Fuel injection timing | Before top dead center (degrees) | 6°±1° | |
Crankshaft angle/Plunger lift | 0°CA/1.0 | ||
Exhaust temperature (°C) | ≤600 | ||
Cooling water outlet temperature | 85±5 | ||
Oil pressure (MPa) | Rated speed | ≥0.40 |
TSD Diesel Inboard vs Gasoline Outboard
Diesel has a high flash point, is not easy to burn, and is safer.
Fuel types more compliant with government requirements and easier to buy.
Higher fuel efficiency and economy, durability.
The initial purchase cost is high, but the maintenance cycle is long and the user operating cost is low.
Greener and emits less CO2 than gasoline.
Gasoline has a lower flash point and has a higher chance of an accidental explosion.
More and more government directives require that government ships in the fields of defense, navy, etc., transition from gasoline engines to diesel engines.
Fuel consumption of the same horsepower is about 40% higher than that of diesel outboards.
Low initial acquisition cost and high long-term operating cost.
More carbon dioxide and pollutants.
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