Fuel Oil Sys

7/25/2019 Fuel Oil Sys

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FUEL OIL SYSTEM


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1. FUEL OILS

1. H.F.O. Heavy fuel oil( residual, blends & crudes );

. !.F.O. !iesel fuel oilor".!.O. "arine !iesel oilorli#$% fuel oil( in

res%ric%ed sense )1.1.1 esidualsare residuesfro' various rafinery rocesses;

1.1. lendsare fuel oil 'i*%uresof differen% viscosi%y %o ob%ain a

roduc% of desired viscosi%y and densi%y.

1.1.+ rudes- na%ural 'i*%ures consis%in# of $ydrocarbons sul$ur,

ni%ro#en and / or o*y#en deriva%ives of $ydrocarbons.


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1. FUEL OILS

1. H.F.O. Heavy fuel oil( residual, blends & crudes );

. !.F.O. !iesel fuel oilor".!.O. "arine !iesel oilorli#$% fuel oil( in

res%ric%ed sense )1.1.1 esidualsare residuesfro' various rafinery rocesses;

1.1. lendsare fuel oil 'i*%uresof differen% viscosi%y %o ob%ain a

roduc% of desired viscosi%y and densi%y.

1.1.+ rudes- na%ural 'i*%ures consis%in# of $ydrocarbons sul$ur,

ni%ro#en and / or o*y#en deriva%ives of $ydrocarbons.

. FUEL 0ISOSI2

In%ernal resis%ance of a fluid %o rela%ive 'ove'en%. Oil is 'ore viscous

3$en cold. 0iscosi%y is 'easured in ed3ood Universal, Saybol%

Universal, Saybol% Furol and En#ler, bu% 'os% co''only in 4ine'a%ic cS%.


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+. 5U5OSE OF HE FUEL OIL S2SE"

o s%ore, %ransfer & clean%$e oil rior %o in6ec%ion.

7. SE588E FUEL OIL S2SE"S

7.1 H.F.O. Heavy fuel oil 9 in navi#a%ion;

7. !.F.O. !iesel fuel oil / or ".!.O."arine !iesel oil / or li#$% fuel oil9

in 'anuverin#.


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:. FO" HE !OULE OO" O HE E


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:. FO" HE !OULE OO" O HE E


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=. S8FE2 !E0IES

=.1 Lo3 %an4 level alar'si#nals %$a% a level in %$e %an4 is %oo lo3.

=. 5ressure loss alar'indica%es a ressure dro belo3 er'issible

li'i%s.

=.+ 0iscosi%y re#ula%or>con%rols fuel oil %e'era%ure, i.e. viscosi%y)


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=. S8FE2 !E0IES

=.1 Lo3 %an4 level alar'si#nals %$a% a level in %$e %an4 is %oo lo3.

=. 5ressure loss alar'indica%es a ressure dro belo3 er'issible

li'i%s.

=.+ 0iscosi%y re#ula%or>con%rols fuel oil %e'era%ure, i.e. viscosi%y)

=.7 5ressure re#ula%in# valveensures cons%an% ressure a% %$e fuel

'ain;

=.: ?uic4 close valvesare valves $avin# collasable bria#eand 'aybe closed fro' ou%side 'ac$inery sace.

=.= E'er#ency re'o%e cu%@ou% s3i%c$esfi%%ed %o %$e u's and

ac%ua%ed in case of e'er#ency.


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B. O"USIO


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C. F8OS LE8!I< O


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C. F8OS LE8!I< O


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C.+ 5EE8IO

Is %$e dis%ance %$e oil drole%s %ravel in%o co'bus%ion sace before

'i*in# 3i%$ air and i#ni%in#.


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5ene%ra%ion deends uon-

a) a%o'isa%ion;

b) veloci%y leavin# %$e in6ec%or

c) condi%ions 3i%$in %$e co'bus%ion c$a'ber

I% is desirable %$a% %$e fuel ene%ra%es in%o %$e 3$ole co'bus%ion

sacebu% i% s$ould no% i'in#eon %$e in%ernal surfacebefore burnin#.


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5ene%ra%ion deends uon-

a) a%o'isa%ion;

b) veloci%y leavin# %$e in6ec%or

c) condi%ions 3i%$in %$e co'bus%ion c$a'ber

I% is desirable %$a% %$e fuel ene%ra%es in%o %$e 3$ole co'bus%ion

sacebu% i% s$ould no% i'in#eon %$e in%ernal surfacebefore burnin#.

C.7 UULEE

Is %$e 'ove'en%of %$e co'ressed airand fuel3i%$in a co'bus%ionsace before co'bus%ion occurs.


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urbulence is caused by -

a) s3irl, 3$ic$ is i'ared due %o %$e air en%ry a% scavan#e or%s

b) fuel sray a%%ern

c) is%on cro3n s$ae

urbulence i'rovesfuel and air 'i*in# foreffec%ive andraid

co'bus%ion.


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. FUEL IGEOS

$ey are inser%ed in%o fuel valve oc4e%of %$e en#ine cylinder.

In6ec%ors can be fi%%ed cen%rally( si'e%rical fuel sray ) or in o%$er

3aydeendin# uon %$e osi%ion of e*$aus% valves.


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. FUEL IGEOS

$ey are inser%ed in%o fuel valve oc4e%of %$e en#ine cylinder.

In6ec%ors can be fi%%ed cen%rally( si'e%rical fuel sray ) or in o%$er

3aydeendin# uon %$e osi%ion of e*$aus% valves.!efec%s-

a) c$o4in# due %o dir%;

b) inadea%e coolin#( $i#$ %. 9 carbon buildin# u on %$e a%o'iser;)

( lo3 %. 9 e*%ernal corrosion )

es%in#-

Fuel in6ec%ors'us% be re#ulary over$auled;

8f%er asse'bly an in6ec%or is %es%ed 3i%$ a %es% u'( oera%in#

ressure and fuel sray );$ere s$ould be no lea4a#es.


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.1 OOLI

Fuel Oil Sys

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