Lister Petter GW3, Operator'S Handbook Manual

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20
GAMMA SERIES ENGINES OpERATORS' hANdbOOk
4.1 fuEl SpECIfICATION
To get the correct power and performance from your engine, use good quality fuel.
The recommended fuel specification for Lister Petter Power Systems engines is
indicated below.
4. ENGINE fluIdS
FUeL SPeCIFICATION
Factor Specification
Cetane Number 50 minimum
Viscosity 2.0 / 4.5 centistoke at 40
°
C
Density 0.835-0.855 kg/litre
Sulphur 0.2% of mass maximum
Distillation 85% at 350
°
C
• Cetane Number
This indicates ignition performance. A fuel with a low cetane number can cause
starting problems and affect combustion.
• viscosity
Engine performance can be affected if viscosity (resistance to flow) is outside
the given limits.
• density
A low-density fuel reduces engine power. A high density fuel increases engine
power and exhaust emissions
• Sulphur
A high sulphur content (not normally found in Europe, North America or
Australasia) can cause engine wear. Where only high sulphur fuels are
available, it is necessary to use highly alkaline lubricating oil or to renew the
lubricating oil more frequently (see
sections 5.1 and 5.9
).
• distillation
This is an indication of the mixture of different hydrocarbons in the fuel. A high
ratio of lightweight hydrocarbons can affect the combustion characteristics.
4.1.1 low Temperature fuels
Special winter fuels may be available for engine operation at temperatures below
0°C. These fuels have a lower viscosity and also limit the wax format ion in the
fuel at low temperatures. If wax formation occurs, this could stop the fuel flow
through the filter.