Diesel Fuel


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diesel fuel

[′dē·zəl ‚fyül]
(materials)
Fuel used for internal combustion in diesel engines; usually that fraction of crude oil that distills after kerosine.

Diesel Fuel

 

a liquid petroleum fuel used in diesel engines. Two groups of diesel fuels are produced: distillate low-viscosity fuels used in high-speed boosted diesels and high-viscosity residual fuels used in slow-speed diesels.

Distillate diesel fuels are produced by using kerosine-gas-oil fractions from direct petroleum refining and to some degree (up to 20 percent) gas oils from catalytic cracking. Fuel for slow-speed diesels is produced from a mixture of fuel oils and the kerosine-gas-oil fractions of petroleum.

Table 1. Distillate fuels
FuelViscosity at 20°C
(centistokes)1
Centane numberSulfur content
(percent)
Congealing temperature (°C)Flash point (°C)
1 1 stoke = 10 m2/sec * Viscosity at 50°C
Motor vehicle and tractor fuels
Low sulfur content:
DA (arctic)...............
2.5-4.0400.2-6035
DZ (winter)...............3.5-6.0400.2-4550
DL (summer)...............3.5-8.0450.2-1060
DS (special)...............2.5-4.0 2500.2-1590
High sulfur content:
A (arctic)...............
1.5-2.5450.4-5530
Z (winter)...............2.2-3.2450.6-3535
L (summer)...............3.0-6.0451.0-1040
S (special)...............4.5-6.0501.0-1590
Locomotive and ship engine fuels
TZ (winter)...............2.2-5.0450.5-3540
TL (summer)...............3.5-6.5450.5-1065

Tables 1 and 2 show the basic properties of diesel fuels produced in the USSR.

Table 2. Residual fuels
FuelViscosity at 50°C
(centistokes)
Cokeability
(percent
)
Sulfur content
(percent
)
Congealing temperature
(°C
)
Flash point
(°C
)
DT...............363.00.5-1-5-565
DM...............15010.03.01085

REFERENCES

Nefteprodukty: Spravochnik. Edited by B. V. Losikov. Moscow, 1966.
Tekhnicheskie usloviia na nefteprodukty. Moscow, 1969.

N. G. PUCHKOV

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