WÄRTSILÄ 41508, Инструкция по эксплуатации

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Carbon dioxide Carbon dioxide and and nitrogen nitrogen will increase the methane number. will increase the methane number.
2) Hydrogen 2) Hydrogen contents above 3 vol-% must be agreed on case by case contents above 3 vol-% must be agreed on case by case
basis. basis.
Hydrogen sulphide H Hydrogen sulphide H
2 2
S S may cause corrosion on the gas handling may cause corrosion on the gas handling
equipment. equipment.
Particles Particles can be the reason for improper sealing and function of the can be the reason for improper sealing and function of the
gas handling equipment. The gas regulating unit should contain a gas handling equipment. The gas regulating unit should contain a
suitable filter.
suitable filter.
NOTE! NOTE! Duri During di ng disman smantlin tling and g and assem assembly o bly of the f the gas co gas compon mponents ents, spec , special ial
care should be taken in care should be taken in order to avoid foreign order to avoid foreign particles entering the particles entering the
gas system. gas system.
0 02 2..2 2 LLu ub brriic ca attiin ng g o oiill
02.2 02.2.1 .1 System System oil c oil character haracteristics istics
Vis Viscos cosity. ity. Viscosity class SAE 40. Viscosity class SAE 40.
Vis Viscos cosity ity ind index ( ex (VI) VI) . Min. 95 . Min. 95
Alk Alkalin alinity ity (BN) (BN).. Lubricants with a BN of 4 - 7 mg KOH/g have to be Lubricants with a BN of 4 - 7 mg KOH/g have to be
used. used.
Sulphated ash level. Sulphated ash level. The content of sulphated ash in gas engine The content of sulphated ash in gas engine
lubricants is a very important property. Too high lubricants is a very important property. Too high ash content can cause ash content can cause
preignition, knocking and spark plug fouling, w preignition, knocking and spark plug fouling, while too low ash content hile too low ash content
can lead to increased valve wear. Low ash lubricants with sulphated can lead to increased valve wear. Low ash lubricants with sulphated
ash level of max. 0.6 w-% have to be used.
ash level of max. 0.6 w-% have to be used.
Add Additiv itives. es. The oils should contain additives that give good oxidation The oils should contain additives that give good oxidation
stability, corrosion protection, load carrying capacity, neutralization of stability, corrosion protection, load carrying capacity, neutralization of
acid combustion and oxidation residues, and should prevent deposit
acid combustion and oxidation residues, and should prevent deposit
formation on internal engine parts (piston cooling gallery, piston ring
formation on internal engine parts (piston cooling gallery, piston ring
zone and bearing surfaces in particular).
zone and bearing surfaces in particular).
Foaming characteristics. Foaming characteristics. Fresh lubricating oil should meet the Fresh lubricating oil should meet the
following limits for foaming tendency and stability (according to the following limits for foaming tendency and stability (according to the
AST ASTM D M D 892 892-92 -92 test test met method hod): ):
Sequence I: 100/0 ml Sequence I: 100/0 ml
Sequence II: 100/0 ml
Sequence II: 100/0 ml
Sequence III: 100/0 ml
Sequence III: 100/0 ml
In this test a certain amount o In this test a certain amount of air is blown through the lubricating oil f air is blown through the lubricating oil
sample. The first number in the results is the foam volume after a sample. The first number in the results is the foam volume after a
blowing period of 5 minutes and should be less than or equal to 100 ml.
blowing period of 5 minutes and should be less than or equal to 100 ml.
The second number is the foam volume after a settling period of 10
The second number is the foam volume after a settling period of 10
minutes and should always be 0 ml.
minutes and should always be 0 ml.
Sequences I and III are per Sequences I and III are performed at a formed at a temperature of 24°C temperature of 24°C and and
F F u u e e l l , , L L u u b b r r i i c c a a t t i i n n g g O O i i l l , , C C o o o o l l i i n n g g W W a a te te r r 3 3 4 4 S S G G - - 2 2 0 0 0 0 3 3 0 0 3 3 - - 0 0 3 3