parametros constructivos de mci
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UNIVERSIDAD NACIONAL DE SAN AGUSTIN DE AREQUIPA
FACULTAD DE INGENIERA DE PRODUCCIN Y SERVICIOS
DEPARTAMENTO ACADMICO DE INGENIERA MECNICA- ELCTRICA
CURSO DE: ENSAYOS DE MOTORES DE COMBUSTIN INTERNA
LABORATORIO N 1
TEMA: DESARMADO, ARMADO Y DETERMINACIN DE LOS
PARAMETROS CONSTRUCTIVOS DE UN MOTOR DE COMBUSTIN INTERNA
REALIZADO POR:HUANCO ANCO JESUS
DOCENTE: M.S. I!".:JUAN DAVID CHVEZ CUELLAR
F#$% '#%()*%)+!: F#$% #!,'#"%: N,%:
26/04/206 2!/04/206
AREQUIPA - PER
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/01LABORATORIO N 1
DESARMADO2 ARMADO Y DETERMINACIN DE LOS PARAMETROS
CONSTRUCTIVOS DE UN MOTOR DE COMBUSTIN INTERNA
I.- OB3ETIVO:
C"#"$%& '"( )*&+%-&"( $"#(-&.$-"( 1%' "-"&, 1%#-$*& (.( )$)*'%( %'%%#-"( 3 &%'*$"#*& %'1%(*&&"''" 1%' $$'" -%&"1#+$" $"# '"( 1%&%#-%( ((-%*( 1% .#$"#*%#-"( 1%' "-"&
II.- FUNDAMENTO TEORICO:
1. PARMETROS CONSTRUCTIVOS DE LOS M.C.I.
A. PUNTO MUERTO SUPERIOR 4PMS5: L* )"($5# 1%' )(-5# %# %' $'#1&", %# .% '*1(-*#$* %#-&% %' )(-5# 3 %' %7% 1%' $89%:*' 1%' "-"& (%&+ +;*
B. PUNTO MUERTO INFERIOR 4PMI5: L* )"($5# 1%' )(-5# %# %' $'#1&", %# .% '*1(-*#$* %#-&% %' )(-5# 3 %' %7% 1%' $89%:*' (%&+
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%()*$" .% (% %#$.%#-&* %# '* )*&-% (.)%&"& 1%' )(-5#, %(-% %()*$" *&E?AL 4L)5:P"& $*1* .%'-* 1%' $89%:*' %' )(-5#&%$"&&% 2 $*&&%&*( 1* 3 .%'-*
L. VELOCIDAD MEDIA DEL MBOLO O PISTN 4V965: C*&*$-%&>* %' 8&*1" 1%)%&%$$"#*%#-" 1% '* %(-&.$-.&* 1%' "-"&, ).%(-" .% (. *'"& ).%1% 1%-%*& %' 1%(8*(-%1% '*( )%>*( .% "&*# %' 8&.)" $'#1&" 3 @?"'" 3 %' #%' 1% '*()@&11*( %$+#$*( 1%?1*( *' &">*%#-"
/. ELEMENTOS CONSTRUCTIVOS DE LOS M.C.I.
A. CILINDRO:C"#1.$% *' )(-5# %# (. "%#-" 3 %( %' %'%%#-" $%#-&*' 1%' ((-%* 1%$")&%(5#
B. BLOQUE DE CILINDROS Y BANCADA:S"?&% %' ?'".% (% *)"3*# '*( 1%+( )*&-%( 1%'"-"& )"& '" .% (. &81%> %( %(%#$*' )*&* %' ?.%# .#$"#*%#-" 1%' "-"&
E' ?'".% 1%?% )"(%%& 1% $"#1.$-"( #-%&"&%( )*&* ''%*& %' *$%-% * )&%(5# * '"( 1%&%#-%($"7#%-%( .% (")"&-*# %' $89%:*', *(< $"" $"#1.$-"( )*&* ''%*& %' *$%-% * '* $.'*-* .% * (.%> -%#% $"#1.$-"( )*&* ''%*& %' *$%-% *' +&?"' 1% '%*( " 1% ?*'*#$#%(
C. CULATA:E( '* )%>* 1%' "-"& 1% 1(%:" +( $")'%7" )"& '* $*#-1*1 1% .#$"#%( 3&%.%&%#-"( .% 1%?% $.)'& P.%1% *?%& .#* )*&* -"1"( '"( $'#1&"( "-"&%( )%.%:"(," .#* )*&* $*1* $'#1&" " )*& 1% $'#1&"( "-"&%( +( 8&*#1%(
L* $.'*-* )"&'" 8%#%&*' -%#%
.% *'"7*& '"( (8.%#-%( %'%%#-"(
Vc=Vc 1+Vc 2+Vc3Va=Vh+Vc
=Va
V
R=S
2
LCI=2R=2S
Vmp=Sn
30
Ilustracin 1: Esquema General De Un Motor De Combustin InternaAlternativo
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
)%(*& '" %#"( )"(?'% 3 %( 1
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F. VLVULAS: S"# '*( %#$*&8*1*( 1% $"#-&"'*& %' )*(" 1% '.1" )"& '* $+*&*1% $"?.(-5# 1.&*#-% %' )&"$%(" 1% &%#"*$5# 1% '* $*&8* L* "&* +($"# 1% '*( +'.'*( %( '* 1%#"#*1* 1% )'*-"
L* +'.'* +( ("'$-*1* %( '*
1% %($*)% )"& .% '*-%)%&*-.&* 1%' '.1" $.*#1")*(* )"& %''* %( .3 *'-*
G. SISTEMA DE DISTRIBUCIN:A8&.)* *-"1"( '"( %'%%#-"( %$+#$"( .% )&""$*# '**)%&-.&* 3 $%&&% 1% '*( +'.'*(, 1%?% %(-*&(#$&"#>*1" $"# %' "%#-" 1% )(-5#$89%:*' 3 $")'%-* .# $$'" 1%.#$"#*%#-" $*1* 1"( .%'-*( 1%' "-"& %'+&?"' 1% '%*( 8&* * '* -*1 1% &%"'.$"#%(.% %' $89%:*'
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). P%',#8 S)8,#9% E!#!&)&: B*-%&
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P"& '"( )'*-#"( #$*%#-% )*(* '* $"&&%#-% 1% ?*(% 1%' -&*#((-"& S% $"#(8.%# $"&&%#-%( 1% $*&8* *3"&%( N" (% (.?(*#* %' )&"?'%* 1% '"( &%?"-%( L* $"#.-*$5# (8.% (%#1" '%#-*
. EL ENCENDIDO ELECTRNICO SIN CONTACTOS 4ENCENDIDOTRANSISTORIZADO5:E# %' %#$%#11" %'%$-&5#$" " ''**1" -*?@# -&*#((-"&>*1" *(1" .-'>*1" *3"&-*&*%#-% )"& '"( $"#(-&.$-"&%( 1% *.-"5'%( 1%?1" * (. (%#$''%>,)&%(-*$"#%( 3 *?'1*1 E(-% -)" 1% %#$%#11" (% ''** $"#%#-% G?&%*%&'%((G
.-'>*#1" .#* )*'*?&* #8'%(* .% (8#$* (# &.)-"& T%#%#1" %# $.%#-* %' -)" 1% $*)-*1"& " (%#("& .-'>*1" %# %' 1(-&?.1"& (% ).%1%#1%&%#$*& 1"( -)"( 1% %#$%#11" %'%$-&5#$"
E#$%#11" %'%$-&5#$" $"# 8%#%&*1"& 1% ).'("( 1% #1.$$5# BOSCH '" 1%#"#* TZI"-&"( *?&$*#-%( '" 1%#"#*# TSZI
E#$%#11" %'%$-&5#$" $"# 8%#%&*1"& H*'' BOSCH '" 1%#"#* TZH
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&. ENCENDIDO DE PLATINO:E# '* *3"&* 1% '"( *.-"( 1% "1%'"( *#-%&&%(,1% '"( 0 3!0 (% .-'>" .$" %(-% -)" 1% %#$%#11"
D#8#!,%% ( #!#!&)& P(%,)!L* 1%(%#-*7* %( .% ( %' *.-"5' ''%8*(%, * $*&8*& 1%+( " %-%& "'-*7%, .$"*3"& 1%' .% %(, (% .%*# '"( )'*-#"( 1%' *.-"5' 3 (% *)*8* %' *.-"
B. NUMERO DE TIEMPOS
%. MOTORES DE TIEMPOSF S% &%*'>* .# $$'" $*1* 1"( .%'-*( 1%' "-"&F E;(-%# .#"( )&"$%("( 1%&%#$*1"( )*&* &%#"*& %' '.1" .% %"'.$"#*
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. MOTORES DE / TIEMPOS S% &%*'>* .# $$'" $*1* .%'-* 1%' "-"& E' '.1" (% &%#.%* %#-&*( %' )(-5# %(-+ %# '* )*&-% #%&"& 1% (. $*&&%&*
S% .-'>* )*&* )%.%:*( )"-%#$*( (%#$''%> ?*&&1" )"& $*&-%& 3 )"-%#$* %()%$
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L*( %;8%#$*( )&")*( 1%' "1" 1% %#$%#11" 3 $"?.(-5# 1% '"( MEP 3 1% '"( MEC, 7.#-"$"# %' )&"$%(" 1% "&*$5# 1% '* %>$'* *1%$.*1*, *# ''%*1" * '* %;(-%#$* 1% -)"( 1%
$"?.(-?'%( .% ("# %()%$
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A-"(@&$"( T.&?"*'%#-*1"( C"# #-%&$*?*1"& 1% $*'"& " #-%&$""'%&
F. TIPO DE REFRIGERACIN%. R#')"#'%)+! 6' %)'# 4&)'#,%5 E' $*'"& (% -&*#(-% 1&%$-*%#-% *' *&% * -&*@( 1% .#*( *'%-*( $"'"$*1*( %# %' $'#1&" E( +( ?*&*-" 3 *?'% E( +( &.1"(" 3 "'.#"(" A %$%( (% .(* .#* (")'*#-% )*&* "%& *' *&%
. R#')"#'%)+! 6' (H7)& 4)!&)'#,% 8) 8# 78%)!,#'%9)%&'5
E' "-"& $%1% $*'"& *' %1" &%&8%&*#-% $*( (%)&%*8.* .% *$-* $"" *8%#-% #-%&%1" %#-&% %' "-"& 3 %'*&%
S% #%$%(-* .#* ?"?* )*&* "%& %' &%&8%&*#-% E' &%&8%&*#-% (.%'% (%& *8.* $"# *'$""'%( )*&* %-*& '*
$"#8%'*$5# 3 *1-"( )*&* %-*& $"&&"(5#
G. SEGN ESTRUCTURA: POSICION DE CILINDROS
H"&>"#-*'%( V%&-$*'%( E# '
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III.-
PROCEDIMIENTO DE ARMADO Y DESARMADO
E' 7%% 1% 8&.)" ("'$-*&* *' *'*$@# '" (8.%#-%- U# %%&- U#* &%8'* %-+'$*- U# $")+( 1% #-%&"&%(- U# $")+( 1% %;-%&"&%(- U# -&*#()"&-*1"&- U# -&*#()"&-*1"&- U#* )&"?%-* 8&*1.*1*- A$%-% 1% "-"&- L'*%( %;*8"#*'%( *)&")*1*( )*&* %' )%" 1% '* $.'*-*- O-&*( %&&*%#-*( .% (% .-'>*&*#
2 S% )&"$%1%&+ * (*$*& '"( )%"( 1% '* $.'*-* )*&* 1%(-*)*& %' "#"?'"$
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A$$"#*1" %' $89%:*' &"-*$5# (% %(-*?'%$%&+ '*( )"($"#%( 1%' )(-5# %# %' PMS % PMI 3 (%%1&+ '* $*&&%&* S
4 C"# %' $")+( 1% #-%&"&%( (% %1&+ %' 1+%-&" 1%' $'#1&" %1& %' "'.%# .%&-" V$ $"# $.*'.%&* 1% '"( (8.%#-%( @-"1"( 8%"@-&$" $"# *$%-%
" $"?#*#1" $"# '"( @-"1"( *#-%&"&%(6 A$$"#*#1" %' $89%:*', %&$*& .% $.)'* %' $$'" ")%&*-" 1%' "-"&
I1%#-$*& '*( +'.'*( 1% *1(5# 3 %($*)%! M"%#1" 8&*#1" %' $89%:*' 1%-%*& '"( "%#-"( 1% *)%&-.&* 3 $%&&% 1% '*( +'.'*( 1%
*1(5# 3 %($*)% K&*#1" %' $89%:*' 1%-%*& %' "&1%# 1% %#$%#11" 1%' "-"&0 A -&*@( 1% '* "?(%&*$5# 3 %' *#+'((, %(-*?'%$%& '"( %(.%*( ()'$*1"( 1% '"( ((-%*(
*.;'*&%( 1%' "-"& V"'%& *&*& %' "-"&, 1%7*#1" -"1" %# "&1%#
IV.CONTENIDO DEL INFORME
/. PARAMETROS A CALCULAR
DATOS:
D 6!2 6!2 $S2 2 $L $? %()%("&0!! 00!! $
A. P%'9#,'8 % %(7(%':- V(79#! ,'%% 4V$5
Vh= D
2
4S
Vh=6 .8 25
2
4x7 .23
Vh=264 .5cm3
- R#(%)+! 4RL5
R=
D
2
R=6.825
2 =3.4 125
R
L=0.306
- V(79#! 97#', 4V5
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Vc=Vc 1+Vc 2+Vc 3
V$ 2! ' 2! $
V$ ' $
Vc2=D
2
4x b
Vc2=6.825
2
4x 0.088=3.22cm3
Vc=23.83+3.22+5=32.05cm3
Vc=32.05 cm3
- R#(%)+! 4SD5
S
D=1.059
- R#(%)+! 96'#8)+!
Va=Vc+Vh=32.05+264.5=296.55 cm3
=Va
Vc=
296.55
32.05
=9.25
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D%,8:
C#))#!,# #J#8 %)'#: !=0.9
D#( 978,)(#:
H%=44000&'
()*C=0.885,H=0.145 + s"masamlec"lar ,C=
144 ()cmb"s
(ml
P'#8 %&9)8)+!: P-=0.085MPa*a=73C
P'#8 96'#8)+! n1=1.34
P'#8 978,)+! /=0.85
P'#8 #J6%!8)+! n2=1.24
P'#8 #8%6# 0r=0.06
E7%)+!:
"c+0r"c}} over {1+ {} rsub {r}} = {u} rsub {Z} rsup {
1(H%2 H%)
M1(1+0r) +
} = left su! fro! {"=1} to {"=#} {{r} rsub {"} {$v} rsub {"}} r"%&t ' {(} rsub {)}
"1
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;%((%98 M1Para !
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c=a n11
c=346(9.251.341)
c=737 .16&
c=464 . 16 C
;%((%!&
,=M2+MrM1+Mr
dndeMr=0rM1
Mr=0.06 (0.4783)
Mr=0.028698 &ml
&)cmb
,=0.5187+0.0286980.4783+0.028698
,=1.0797
;%((%!& ;U2 H%=114000(1!)L3
2H%=114000 (10.9) 0.5238
2 H%=5971.32&'
&);%((%!& 7"c=C#c
I#-%&)"'*#1" )*&* T$ 46062 =C
T 4C5 C 4%)'#5
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400 2444646 C
00 2!
C#=21 .67 &'
&ml C
E!,!#8"c=(21.67 ) ( 464.16 )
"c=10058 . 35&'
&)
;%((%!& 7K} = left su! fro! {"=1} to {"=#} {{r} rsub {"} {$v} rsub {"}} r"%&t ' {(} rsub {*}
"c
4r c=
(1!) (C+3H)6
M2
rc=
(10.9)( 0.885+3(0.145))6
0.5187
rc=0.0424
4r c2
=
1
12(C2 (1!) (C+3H))
M2
rc2
=
1
12(0.8852 (10.9 )(0.885+3 (0.145 )))
0.5187
rc2=0.0998
4r H23=
H
2
M2
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rH23=
0.145
2
0.5187
rH2 3=0.1398
4r 52=0.79! L
M2
r52=0.79 (0.9) ( 0.5238 )
0.5187
r52=0.718
H*''*#1" '"( C )*&* T$ 46062 =C
T 4C5 CN/ CCO/ C;/O CCO400 2! 4 26 244
4646 CN2 CCO2 CH2O CCO00 244 62! 2 2!4
C#52=21.354&'
&ml C
C#C32=35.783&'
&ml C
C#H23=27.1231&'
&mlC
C#C3=21.6729&'
&mlC
riC#i=r52C#52+rC32C#C32+rH23C#H23+rC3C#C3
riC#i=0.7180 (21.35 4 )+0.0998 (35.783 )+0.1398 (27.1231 )+0.0424 (21.6729)
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riC#i=23.6141 &'&mlC
L.%8"} =23.6141'464.16 '
"c
} = 10960 . 72 {+,} over {+!ol-$}
"c
L7#" %(7(%98}
&1=,"/
&1=0.85(440005971.32)
0.4783(1+0.06) +
10058.35+0.06(10960.72)1+0.06
&1=73865 .85&'
&ml C
;%((%!& @/
} = {} rsub {2}
, "1
L7#"
} = left su! fro! {"=1} to {"=#} {{r} rsub {"} {$v} rsub {"}} r"%&t ' {(} rsub {)}"1
A879)#!& T* /
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} =29.11532300'
"1
} =66965.31
"1
P' ( ,%!,
&2=1.0797(66965.31)
&2=72302.45&'
&)
Cm&1>&2 * entnces as"mims1=2400 C
r i C#i=r52 C#52+rC32 C#C32+rH2 3 C#H2 3+rC3 C# C3
r i C#i=0.7180 (25.447 )+0.0998 (47.076 )+0.1398 (37.830 )+0.0424 (25.908)
ri C#i=29.2863 &'&ml CP' ( ,%!,
} =29.28632400'
"1
} =70287.27
"1
P' ( ,%!,
&2=1.0797(70287.27)
&2=75889.17&'
&)
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-6"i se ntaclaramente6"e&1 !6!2400 !!
;%((%!& T*1=2343.59C
1=2616 .59&
;%((%!& T
b=1
7n21
=87 4 8=1
=7=8.52
P' ( ,%!,
b=261 6.59
9.251.241
b=1534 . 13&
;%((%!& P*
P1=9 Pc
98=,1
c48=1
9=1.0797(2616.59
737.16
)
9=3.832
C%(7(%98 P*P1=1.675 (3.832 )
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P1=6 . 4186MPa
P1=64 .19
VIII. OBSERVACIONES Y CONCLUSIONES
- C"# %' '*?"&*-"&" #%&" .#" .% &%*'>*"( %"( 1%#-$*1" -"1"( '"( ((-%*( 1%.#$"#*%#-"( .% )&%(%#-* .# "-"&
- %"( &%$"#"$1" '*( )*&-%( 1%' "-"& 1% $"?.(-5# #-%* 1.&*#-% (. %#(*?'*7%- P.1"( $"#"$%& %' 1%(*&&"''" 1% '"( $$'"( -%&"1#+$"( .% (% 1*# %# %' "-"&- %"( 1%#-$*1" (.( )*&+%-&"( )$)*'%( $"# '"( $.*'%( *"( * &%*'>*& %' #"&%- ).1"( "?(%&*& .% %( #%$%(*&" -%#%& $"#"$%#-" 1%' -%* *#-%( 1% )&"$%1%& *' %#(*?'*7%
1%' "-"&-
"?(%&*"( -*?@# .% (%)&% 1%?%"( (%8.& '*( #(-&.$$"#%( .% #"( 1*# '"( 1(%:*1"&%(1%' "-"& *' "%#-" 1% &%*'>*&'% .# *#-%#%#-" 3 *( %' "-"& ).%1* .%1*& %# 5)-*($"#1$"#%( 3 #" (.&* *''*(
- O?-."( '* %1$5# 1%' V$ 1% '* $.'*-* %1*#-% %' @-"1" "'.@-&$" $"# *3.1* 1%#(-&.%#-"( 1% '*?"&*-"&"
- C")&"?*"( 3 %&$*"( '* &%'*$5# 1% $")&%(5# 1%' "-"&- I1%#-$*"( %' .#$"#*%#-" 1% %(-% "-"& %# '*( %-*)*( 1% *1(5#, $")&%(5#,
%;)*#(5# 3 %($*)%- H%"( #"-*1" $"" (% ).%1% $*'?&*& 3/" "1$*& -"1" %' )&"$%(" 1% .#$"#*%#-"
"1$+#1"(% %' +#8.'" 1% #3%$$5#
296.532.0
1.6
6.4
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- H%"( $")&"?*1" .% %;(-% %' -&*('*)% " $&.$% 1% +'.'*( 1% *1(5# 3 %($*)%
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