CYLINDER LUBRICATION LUBRICATION SYSTEM May 31, 2015 Marine Study
Cylinder lubrication in a lowspeed main propulsion diesel engine: Cyinder u!ri"ati#n $#r %arine die&e en'ine& #(eratin' #n re&idua )ue& "#ntainin' &u(*ur, "yinder u!ri"ati#n %u&t 'eneray &er+e t*e )##in' (ur(#&e&. Create and %aintain an #i /% t# (re+ent %eta t# %eta "#nta"t !eteen t*e "yinder iner and (i&t#n rin'& . Neutrai&e &u(*uri" a"id in #rder t# "#ntr# "#rr#&i#n "#rr#&i#n . Cean t*e "yinder iner, and (arti"uary t*e (i&t#n rin' (a", t# (re+ent %a)un"ti#n and da%a'e "au&ed !y "#%!u&ti#n and neutrai&ati#n re&idue& Cyinder u!ri"atin' #i )#r a #&(eed %ain (r#(u&i#n die&e en'ine i& ad%itted t# ea"* "yinder durin' t*e "#%(re&&i#n &tr#e Cyinder u!ri"atin' #i, )#r u!ri"atin' t*e (i&t#n rin'& and t*e iner, *a& t# !e ad%itted *en t*e (i&t#n, (i&t#n rin'& and t*e iner are in "## "#nditi#n
and t*e (i&t#n i& %#+in' u(ard &# t*at #i "an !e retained #n t*e (i&t#n rin'& and &(rayed !y t*e (i&t#n rin'& #n t*e iner a& T*i& i& #ny (#&&i!e durin' t*e "#%(re&&i#n &tr#e Ot*eri&e, t*e (i&t#n i& *#t and i) t*e u!ri"atin' #i i& &(rayed #n it, it i e+a(#rate +ery )a&t and i n#t "arry #ut any #r #) u!ri"ati#n At t*e &a%e ti%e, i) u!ri"atin' #i i& ine"ted durin' t*e e4(an&i#n &tr#e, ie *en t*e (i&t#n i& %#+in' d#nard&, it i *a+e a &"ra((in' ee"t rat*er t*an u!ri"ati#n
Cylinder Lubrication in fourstroke trunk piston engine: In )#ur&tr#e trun (i&t#n en'ine&, t*ere are a nu%!er #) dierent %et*#d& )#r u!ri"atin' t*e "yinder iner& and (i&t#n rin'&, de(endin' #n en'ine &i6e and %ae. S(a&* )r#% t*e re+#+in' "ran&*a)t . 7Inner u!ri"ati#n8, *ere t*e #i i& &u((ied )r#% t*e (i&t#n &ide . 7Outer u!ri"ati#n8, *ere t*e #i i& &u((ied !y an e4terna, &e(arate "yinder u!ri"atin' de+i"e )r#% t*e "yinder iner &ide In a )#ur&tr#e trun (i&t#n en'ine, t*e "yinder u!ri"atin' #i i& identi"a t# t*e en'ine &y&te% #i u&ed )#r !earin' u!ri"ati#n and "##in' (ur(#&e& A &%a a%#unt #) t*e "yinder u!ri"atin' #i !y(a&&e& t*e (i&t#n rin'& and end& u( in t*e "#%!u&ti#n &(a"e, *ere it i& 7"#n&u%ed8 9#e+er, t*e (i&t#n in a )#ur&tr#e trun (i&t#n en'ine *a& an #i &"ra(er rin' t*at &"ra(e& %#&t #) t*e #i &u((ied t# t*e "yinder iner !a" t# t*e en'ine:& #i (an, )r#% *ere it i& drained, "eaned and re"y"ed N#r%ay, a ar'e, %#dern, e %aintained )#ur&tr#e trun (i&t#n die&e en'ine i "#n&u%e &#%e 03 t# 05 ';<* #) u!ri"atin' #i
Type of Oil Used in Cylinder Lubricating System o
T*e "yinder u!ri"ant %u&t !e #) a *i'*er +i&"#&ity &# t*at it "an )#r% a '##d u!ri"atin' /% !eteen t*e iner and t*e (i&t#n rin'&
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It %u&t a&# it*&tand t*e *eat +ariati#n& in t*e "#%!u&ti#n area and %u&t dea it* t*e "#%!u&ti#n (r#du"t&
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Under n#r%a runnin' "#nditi#n& t*i& #i i ty(i"ay !e an aaine "yinder u!ri"atin' #i #) SAE 50 +i&"#&ity
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T*e aainity i& indi"ated !y t*e TBN =T#ta Ba&e Nu%!er > ratin' #) t*e u!ri"ant T*e TBN +aue %#&t &uita!e )#r t*e "yinder u!ri"atin' #i de(end& ar'ey #n t*e &u(*ur "#ntent #) t*e )ue u&ed Ty(i"a +aue& )#r &u(*ur "#ntent #) 05 t# 1? %ay !e !eteen 20 t# 25 TBN $#r &u(*ur "#ntent #+er 15? t*e TBN nu%!er %ay !e @0 #r *i'*er
Using the Correct Feed ate for Cylinder Lubrication On"e t*e "#rre"t u!ri"atin' #i i& "*#&en t*e "#rre"t )eed rate %u&t !e e&ta!i&*ed in a""#rdan"e it* t*e en'ine !uider:& re"#%%endati#n&
T*e )eed rate *a& a "riti"a ee"t #n '##d en'ine #(erati#n a(art )r#% t*e ue&ti#n #) #i "#n&u%(ti#n
T## *i'* a )eed rate i& a a&te #) u!ri"ant and %#ney T*e "#rre"t )eed rate i a# t*e )#r%ati#n #) t*e u!ri"atin' /% !eteen t*e iner and t*e rin'& and i 'i+e %a4i%u% (r#te"ti#n at t*e (i&t#n re+er&a (#int&
T*e "yinder #i "#n&u%(ti#n !urette i& a u&e)u %ean& #) "*e"in' t*e #i "#n&u%(ti#n #) indi+idua u!ri"at#r !#4e& t# *e( en&ure t*at t*e #i i& di&tri!uted a"r#&& t*e !#4e& a& intended T*e +#u%e !eteen t*e t# interna di&"& i& 1;2 itre& i+en t*e te%(erature den&ity "*ara"teri&ti"& #) t*e #i, t*e a"tua %a&& #) t*e #i durin' it& u&e in en'ine "ai!rati#n "an !e "a"uated )r#% t*e #i te%(erature Cai!rati#n ti%e ie& ty(i"ay !eteen 3 10 %inute& de(endin' #n t*e #i "#n&u%(ti#n rate& and t*e &(eed;(#er #) t*e en'ine, =i) t*e #i )eed dri+e i& &(eed;(#er de(endent> In &# &(eed #(erati#n, t*e u&e #) *ea+y )ue #i it* *i'* &u(*ur "#ntent %ae& t*e #! #) t*e "yinder u!ri"ant +ery di"ut E+en *i'*
aainity #i& "ann#t *#(e t# neutrai&e a t*e &u(*uri" a"id& *i"* are (r#du"ed durin' "#%!u&ti#n
!"ect of Under Lubrication and O#er Lubrication of Cylinder: A "#rre"t +i&"#&ity i& i%(#rtant in #rder t# en&ure t*e &(reada!iity #) t*e "yinder #i, and t*e a((ied )eed rate and ine"ted a%#unt #) #i (er &tr#e are ey )a"t#r& in t*e dei"ate !aan"e !eteen under u!ri"ati#n and #+er u!ri"ati#n-
$ Under-lubrication I) t## itte "yinder #i i& &u((ied, &tar+ati#n i #""ur *i"* %i'*t re&ut in "#rr#&i#n, a""u%uated "#nta%inati#n )r#% un!urned )ue and "#%!u&ti#n re&idue&, and in t*e #r&t "a&e, %eta t# %eta "#nta"t, n#n a& 7&"un'8
$ O#er-lubrication I) t## %u"* "yinder #i i& &u((ied, t*e #&& #) )re&*, unu&ed #i in t*e &"a+en'e (#rt& i !e *i'*, and t*e (i&t#n rin'& %i'*t !e (re+ented )r#% %#+in' =r#tatin'> in t*eir 'r##+e& !y t*e &# "aed 7*ydraui" #"8 $urt*er%#re, t*e "yinder iner runnin' &ur)a"e &tru"ture %i'*t #+er ti%e !e"#%e "#&ed and &%##t* ie a %irr#r, and i n# #n'er !e a!e t# retain t*e u!ri"atin' #i T*i& i& &#%eti%e& "aed 7"*e%i"a !#re (#i&*8, and *en aaine de(#&it !uidu( #n t*e (i&t#n t#( and )r#% e4"e&&i+e "yinder #i i& in "#nta"t it* t*e "yinder iner runnin' &ur)a"e, it "an "au&e *at i& &#%eti%e& "aed 7%e"*ani"a !#re (#i&*8 A #) t*e&e (*en#%ena %i'*t e+entuay re&ut in &"un'
%cid Condensation in the combustion chamber
T*e "##in' &y&te% %u&t !e #(erated &# t*at t*e (i&t#n and "yinder iner te%(erature i& n#t dr#((ed !e# t*e te%(erature at *i"* t*e Su(*uri" a"id %ay "#nden&e #n t*e "yinder iner
%cid condensation depends on: t*e en'ine "#%!u&ti#n (re&&ure t*e iner te%(erature t*e "#n"entrati#n #) t*e &u(*ur #4ide& t*e *u%idity #) t*e intae air S#, t# *e( t*e u!ri"ant in neutrai&in' t*e a"id, t*e en'ineer %u&t en&ure t*at t*e te%(erature #) t*e &"a+en'e air &*#ud !e %aintained in a""#rdan"e it* t*e %anu)a"turer&: re"#%%endati#n T## # a &"a+en'e air te%(erature i re&ut in "#nden&ati#n it* t*e ri& #) %#i&ture enterin' t*e "yinder& t## *i'* a &"a+en'e air te%(erature i ad+er&ey ae"t t*e "#%!u&ti#n "*ara"teri&ti"& #) t*e en'ine
!ngine uning-in Criti"a t# t*i& u!ri"ati#n area i& t*e ay t*e en'ine *a& !een run in at "#%%i&&i#nin' A '##d run in (r#"edure i "reate a '##d ear in #) t*e "yinder iner and (i&t#n rin' A '##d 'a& &ea i& #!tained !eteen t*e% *ere!y a t*in #i /% (r#+ide& reia!e and ee"ti+e u!ri"ati#n T*e (eri#d and %et*#d #) runnin' in &*#ud !e de"ided u(#n in a""#rdan"e it* t*e en'ine %anu)a"turer:& re"#%%endati#n E+en i) #ny ne rin'& *a+e !een /tted t*e runnin' in (r#"edure& &*#ud !e a& near a& (#&&i!e t# t*at re"#%%ended )#r ne en'ine& T*e runnin' in re"#%%endati#n %ay &(e"i)y t*e u&e #) a (arti"uar ty(e #) u!ri"ant and t*e )eed rate &*#ud !e *i'* A)ter runnin' in, t*e n#r%a "yinder #i i !e u&ed and t*e )eed rate 'raduay adu&ted unti t*e re"#%%ended )eed rate i& rea"*ed S#, t*e "yinder u!ri"atin' #i %u&t "reate a u!ri"atin' /% !eteen t*e (i&t#n rin' and t*e iner, and %u&t %aintain ee"ti+e u!ri"ati#n It %u&t
a&# "#%!at "#rr#&i+e ear T*e u&e #) t*e "#rre"t u!ri"ant and t*e "#rre"t )eed rate )#r t*e en'ine #ad i *e( t# a"*ie+e t*e !e&t re&ut )r#% t*e u!ri"ant
Lubrication Of Medium Speed Trunk Piston Engine
In %ediu% &(eed die&e t*e "yinder i& #(en t# t*e "ran "a&e T*i& %ean& t*at "#nta%inati#n #) t*e "ran "a&e #i !y "#%!u&ti#n (r#du"t& reuire& t*e #i t# !e dierent in "*ara"ter t# t*at *i"* %ay !e u&ed in a &# &(eed en'ine eneray, t*e u!ri"ant %u&tF "reate and %aintain ee"ti+e u!ri"ati#n !eteen %#+in' "#%(#nent& under *i'* %e"*ani"a and t*er%a #ad& F tran&(#rt &#id "#nta%inant& )r#% t*e "yinder t# t*e "eanin' de+i"e&, &u"* a& /ter& and "entri)u'e& F it*&tand *eat /'*t "#nta%inati#n, "#rr#&i#n and ear re&i&t #4idati#n and t*er%a !read#n ee( t*e en'ine "ean
eferences: 1 %arinedie&e&in)# 2 T*e Runnin' and Maintenan"e #) Marine Ma"*inery G C#ey 3 Reed& Marine En'ineerin' Serie&, H# 12 G M#t#r En'ineerin' n#ed'e )#r Marine En'ineer&
J La%!:& Kue&ti#n and An&er& #n Marine Die&e En'ine& G S C*ri&ten&en 5 rin"i(e& and ra"ti"e #) Marine Die&e En'ine& G Sanya art&ia"#%
