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NC493QC1 Marine Diesel Engine

  • NC493QC1
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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 pressure200r/minMPa 

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 rateg/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.


TSD Diesel Engine

Surface drive


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GB/T19001-2016/IS09001:2015.
This certificate is valid to the following scope for QMS: ^DESIGN, DEVELOPMENT AND MANUFACTURE OF MARINE ACCESSORY PRODUCTS (MOVABLE SEMIIMMERSED OAR, FIXED SEMI-IMMERSION OAR, GEAR BOX)*.
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