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TUGAS 2A MESIN KONVERSI ENERGI I (Motor Bakar)
1. Jelaskan pere!aan "es#n otto !an "es#n !#esel !ar# s#s#
a. S#kl$s !an lan%ka& . Karakter#st#k
'. Ko"ponen
!. el$an% e#s#ens#2. Jelaskan pert#"an%an*pert#"an%an !ala" "e"#l#& spes##kas# tekn#s "otor akar
(+a,-oo! & 2.1)
/. Apa ,an% !#"aks$! !en%an e#s#ens# 0ol$"etr#k (+a,-oo! & .2)
3. Se$tkan &al*&al ,an% "e"pen%ar$&# e#s#ens# 0ol$"etr#k (+a,-oo! & .2)4. Se$tkan pere!aan s$per'&ar%er !an t$ro'&ar%er (+a,-oo! & .5)
. Se$tkan !an 6elaskan 0ar#ael ,an% "e"pen%ar$&# prestas#7 e#s#ens#7 !an e"#s# "otor
ens#n (+a,-oo! & 14./)8. Se$tkan !an 6elaskan 0ar#ael ,an% "e"pen%ar$&# prestas#7 e#s#ens#7 !an e"#s# "otor
!#esel (+a,-oo! & 14.4)
Ja-a 9
1. ere!aan "es#n otto !an !#esel.
a. S#kl$s !an lan%ka& 9
- S#kl$s pa!a "es#n otto7 s#kl$s "es#n "en%%$nakan a&an akar ens#n !en%an
pen%ap#an !ar# per'#kan $n%a ap# !ar# $s#.Mes#n otto !#a%# "en6a!# 2 ,a#t$ "es#n 3 tak !an "es#n 2 tak.
o Mes#n 3 tak: 3 lan%ka& ,a#t$ p#ston er%erak 3 lan%ka& $nt$k
"en%&as#lkan tena%a !ala" sekal# pe"akaran.
o Mes#n 2 tak: 2 lan%ka& ,a#t$ p#ston er%erak 2 lan%ka& $nt$k
"en%&as#lkan tena%a !ala" sekal# pe"akaran.
-S#kl$s pa!a "es#n !#esel a&an akar ,an% !#%$nakan a!ala& "#n,ak !#esel ata$solar. U!ara !#ko"pres# ke te"parat$r t#n%%#. Ke"$!#an pe"akaran !#"$la# saat
a&an akar ,an% !##n6eks#kan kontak !en%an $!ara panas terse$t.
. Kaarakter#st#k
- Karakter#st#k "es#n otto
o e#s#ens# panas ke'#l
o !a,a ,an% !#&as#lkan le#& ren!a&
o a&an akar relat# oros
o %etaran "es#n le#& &al$s
o ke'epatan le#& t#n%%#
-Karakter#st#k "es#n !#esel
o e#s#ens# panas t#n%%#
o !a,a !an ,an% !#&as#lkan le#& t#n%%#
o a&an akar &e"at
o ke'epatan le#& ren!a& !# an!#n% otto
o %etaran "es#n le#& esar
'. Ko"ponen
- Ko"ponen "es#n otto
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o B$s#
o Ko#l pen%ap#an
o Kar$rator
o In6e'tor
- Ko"ponen "es#n !#esel
o No;;leo Glo- pl$%
o In6e't#on p$"p
o re 'o"$st#on '&a"er
o Go0ernor
!. el$an% E#s#ens#
o Mes#n otto 9 e#s#ens# le#& ren!a& !ar#pa!a "es#n !#esel
karena peran!#n%an ko"pres# le#& ren!a& <*1191
o Mes#n =#esel 9 e#s#ens# le#& t#n%%# karena peran!#n%an ko"pres#
t#n%%# 23*2891
2. pert#"an%an*pert#"an%an !ala" "e"#l#& spes##kas# tekn#s "otor akar
- eor"a "es#n sela"a rentan% or"as#n,a.
- e"aka#an a&an akar "es#n !en%an rentan% operas# !an #a,a a&an akar
,an% !#$t$&kan.
- Ke#s#n%an "es#n !an pol$s# $!ara sela"a operas#n,a.
- +ar%a "es#n !an #nstalas# pen!$k$n%n,a.
- Kea!aan !an !a,a ta&an "es#n7 pe"el#&araan "es#n !an #a,a operas#.
/. e#s#ens# 0ol$"etr#' a!ala& peran!#n%an antara 'a"p$ran $!ara !an a&an akar ,an%
"as$k !en%an lan%ka& p#ston.
3. &al*&al ,an% "e"pen%ar$&# e#s#ens# 0ol$"etr#'9
- eran!#n%an ko"pres#- $taran "es#n
- =esa#n7 !an $k$ran #ntake "an#ol!
- Te"perat$r "es#n
4. s$per'&ar%er !an t$ro'&ar%er
- s$per'&ar%er se$a& ko"presor $!ara ,n% !#%erakkan !en%an "en%%$nakan
tena%a !ar# p$taran 'rank s&at !ar# "es#n.
- T$ro '&ar%er se$a& ko"presor $!ara ,an% er$n%s# $nt$k "en#n%katane#s#ens# 0ol$"etr#' ,an% !#%erakkan !en%an "e"anaatkan tena%a !ar# %as
$an% !# e>&a$st "an#ol!.
. 0ar#ael ,an% "e"pen%ar$&# prestas#7 e#s#ens#7 !an e"#s# "otor ens#n.
- ?akt$ pen%ap#an 9 per'#kan n,ala ap# ,an% tepat pa!a -akt$n,a akan "e"$at
'a"p$ran !ar# a&an akar !an $!ara terakar se"p$rna. Se&#n%%a e#s#ens#n,a"en#n%kat !an e"#s# se"ak#n a#k.
- Ko"pos#s# 'a"p$ran 9 6#ka a&an akar le#& an,ak !#san!#n% $!ara "aka
a&an akar t#!ak akan terakar se"p$rna. Se&#n%%a e#s#ens# erk$ran%7 tena%a
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"es#n 6$%a le"a&7 !an e"#s# %as ,an% !#&as#lkan t#n%%# karena "en%an!$n%
an,ak O.
- Bean !an ke'epatan 9 Bean ,an% esar !an ke'epatan akan "e"$at "es#n
"e"erl$kan tena%a ,an% esar p$la7kons$"s# a&an akar 6$%a esar7 "aka e"#s#
%as ,an% !#t#"$lkan 6$%a se"ak#n an,ak.-
Ras#o ko"pres#se"ak#n t#n%%# ko"press# ras#o se"ak#n e#s#enn,a 6$%a se"ak#n a#k.
8. 0ar#ael ,an% "e"pen%ar$&# prestas#7 e#s#ens#7 !an e"#s# "otor !#esel.
- Bean !an ke'epatan 9 se"ak#n esar !an 'epat "aka tena%a "es#n ,an%
!#$t$&kan se"ak#n t#n%%#7 a&an akar ,an% !# #n6eks#kan 6$%a se"ak#n an,ak.Maka e"#s# ,an% !#&as#lkan se"ak#n an,ak.
- ara"eter #n6eks# a&an akar 9 6#ka #n6eks# a&an akar ,an% !##n6eks#kan
se"ak#n an,ak ,an% erent$k ka$t "aka pe"akaran a&an akar akanse"ak#n se"p$rna. Sea #t$ e#s#ens# akan na#k7 !an e"#s# %as $an%n,a
se"ak#n ren!a&
-
=esa#n r$an% akar 9"en#n%katn,a p$saran $!ara !ala" s#l#n!er ,an% !#%$nakn!ala" !#re't #n6e't#on akan "e"$at $k$ran "es#n(0ol$"e pen$&) se&#n%%a
pen'a"p$ran a&an akar ,an% !##n6eks#kan se"ak#n a#k. Maka &as#l
pe"akaran a#k7 e"#s# erk$ran% !an e#s#ens# "en#n%kat.