Doosan G625XF, Руководство по эксплуатации и техническому обслуживанию

Страница: 47 / 106

50 Hz: G625 - G690 - G750XW/XF
OPERATION & MAINTENANCE MANUAL 47 60 Hz: G655 - G750 - G800 - G850XW/XF
FUEL SYSTEM
GENERAL INFORMATION
The fuel injection pump and nozzle are composed of very
sophisticated components with high precision. If fuel is
mixed with foreign substance, it may block the nozzle or
the fuel injection pump components may become seized.
Ensure the fuel system is clean at all times.
CAUTION
Use approved fuel only. Use of non approved fuel
may cause critical damage and faults to the engine.
Replenish fuel while the engine is stopped.
FUEL STANDARDS
The quality of fuel is very important to satisfy the engine
performance, extension of engine life and the allowable
exhaust gas level. Doosan engines are designed to use
diesel fuel available in the local market. If the optimum
engine performance is required, select the proper fuel by
referring to the fuel selection table below.
• Low Sulfur Diesel
NOTE: High sulphur content in diesel fuel - Doosan
diesel fuel engines can be operated with fuels
whose sulphur content is max. 0.05wt%. Fuels
with a sulphur content of > 0.05wt% are not
permitted as they result in increased corrosion
and greatly reduce the service life of engines.
The oil change intervals must be halved if the
sulphur content is > 0.02wt%.
Fuel Ingredients Unit Standard Product
Specific Gravity (kg/litres) - 0.83
Flash Point (°C) > 40 47.8
Viscosity (40°C) (cSt) 1.955 2.459
Sulfur content (wt%) < 0.05 0.038
Cloud point (°C) - -3
Pour Point (°C) < -17.5 -27.2
Low temperature filter clogging point (°C) < -12 -18
Colour (ASTM) < 2.5 0.7
Carbon Residue (10%) Distillation residue
(wt)
(%) < 0.15 0.08
Total acid value (mg KOH/g) < 0.40 0.03
Copper corrosion (100°C, 3 hrs) < 1 1 - a
Ash content (wt) (%) < 0.01 0.001
Moisture and Precipitate (vol. %) < 0.01 0.005
Cetane Index > 45 52
Distillation test
temperature
50% Distillation Point (°C) - 264.4
90% Distillation Point (°C) < 360 344.3