Daewoo ST Series Instruções de Operação Página 40

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NOTICE : A galvanized steel tank should never be used for fuel storage, because fuel oil
reacts chemically with the zinc coating to form powdery flakes which can quickly
clog the fuel filters and damage the fuel pump and injection nozzles.
How to select fuel oil
Fuel quality is an important factor in obtaining satisfactory engine performance, long engine life,
and acceptable exhaust emission levels. DAEWOO engines are designed to operate on most
diesel fuels marketed today. In general, fuels meeting the properties of ASTM designation D975
(grades 1-D and 2-D) have provided satisfactory performance.
The ASTM 975 specification, however, does not in itself adequately define the fuel characteristics
needed for assurance of fuel quality.
The properties listed in the fuel oil selection chart below have provided optimum engine
performance. Grade 2-D fuel is normally available for marine service. Grade 1-D fuel should not be
used in pleasure craft engines, except in an emergency.
<Fuel Oil Selection Chart>
- 37 -
General Fuel
Classification
Gravity, °API
#)
Flash Point
Min. °F (°C)
Viscosity, Kinematic
CST 100 °F (40 °C )
Cloud Point °F
#)
Sulfur Content
wt%, Max.
Carbon Residue
on 10%, wt%, Max.
Accelerated Stability
Total Insolubles
mg/100 ml, Max.
#)
Ash, wt%, Max.
Cetane Number, Min.
+)
Distillation
Temperature, °F(°C)
IMP, Typical
#)
10% Typical
#)
50% Typical
#)
90%
+)
End Point
#)
Water & Sediment
%, Max.
ASTM No. 1 No. 2
Test ASTM 1-D ASTM 2-D
D 287 40 ~ 44 33 ~ 37 0.815 ~ 0.855
D 93 100 (38) 125 (52) 131 (55)
D 445 1.3 ~ 2.4 1.9 ~ 4.1 1.8 ~ 10
D 2500 See Note 1) See Note 1) See Note 1)
D 129 0.5 0.5 0.15
D 524 0.15 0.35 0.1
D 2274 1.5 1.5
D 482 0.01 0.01
D 613 45 45 > 45
D 86
350(177) 375(191)
385(196) 430(221)
45(218) 510(256) 680(360)
500 (260) Max. 625(329) Max.
550(288) Max.` 675(357) Max.
D 1796 0.05 0.05 0.05
DIN 51601
#)
Not specified In ASTM D 975
+)
Differs from ASTM D 975
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