INGENIERIA ELECTROMECANICA
7 mo Semestre. Grupo “ B” MAQUINAS Y EQUIPOS TERMICOS. “SISTEMA DE ENFRIAMIENTO DE UN MOTOR DE COMBUSTION INTERNA”
FRANCISCO DE JESUS SANCHEZ DE LOERA. No. de Control: 12450597
M.I. MARCO ALONSO GARCIA ROMERO.
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Martes/10/Nov/2015
INTROD!!ION. "a temperatura es u# par$metro %ue a&e'ta (e ma#era )mporta#te e* &u#')o#am)e#to (e *os motores (e 'om+ust),# )#ter#a mo(er#os. -# a*u#as partes (e* motor se t)e#e# temperaturas maores (e 1000! '$mara '$mara (e 'om+ust),# 'om+ust),#3 3 e# a*u#os a*u#os 'asos *os ases (e es'ape es'ape sa*e# a 550 550!. !. -# u# motor motor m$ m$ss (e *a ter'e ter'era ra parte parte (e e#er e#era a %ue se *e sum)#)stra a travs (e* 'om+ust)+*e se p)er(e e# &orma (e 'a*or. -* s)stema (e e#&r)am)e#to es e* %ue se e#'ara (e %ue *os ()&ere#tes 'ompo#e#tes (e* motor se ma#te#a# e# temperaturas seuras as ev)tar %ue e* motor su&ra (esastes prematuros o (a6os )mporta#tes *orar 'o# e**o su m$)mo re#()m)e#to. re#()m)e#to. "a maora (e *os autos e# *a a'tua*)(a( 'ue#ta# 'o# motores 'o# s)stem s)s temas as (e e#&r)am e#&r)am)e# )e#to to por aua. aua. -stos -stos s)s s)stem temas as se e#'ar e#'ara# a# (e e#&r)ar u# *%u)(o re&r)era#te 8a'er*o ')r'u*ar (e#tro (e* +*o' *a 'a+e:a (e* motor para e#&r)ar*o ma#te#er*o e# u#a temperatura %ue *e perm)ta operar 'omo (e+e. ;* pr)#')p)o3 *os s)stemas (e e#&r)am)e#to ut)*):a+a# aua 'om<# para e#&r)ar *os e*eme#tos= s)# em+aro3 sta es 'orros)va sus pu#tos (e 'o#e*a'),# 0! (e e+u**)'),# 100! perm)te# *a 'o#e*a'),# e+u**)'),# (e* aua e# (eterm)#a(as 'o#()')o#es3 es por esto %ue se (esarro* (esarro**, *, e* *%u)(o *%u)(o a#t)'o#e* a#t)'o#e*a#te a#te a#t)e+u** a#t)e+u**e#te e#te %ue 'om<#me#t 'om<#me#te e **amamos s,*o a#t)'o#e*a#te o re&r)era#te. No s,*o es )mpos)+*e 8a'er >u)r 8)e*o por e* s)stema (e e#&r)am)e#to3 s)#o %ue e* aua a* 'o#e*arse se epa#(e 'ausa#(o a<# m$s (a6o a* s)stema. -ste *%u)(o **eva e* pu#to (e 'o#e*a'),# (e 0! a ?@7! *as prop)e(a(es a#t) e+u**e#tes (e estos *%u)(os *os **eva# a te#er u#e temperatura (e e+u**)'),# (e 11@! a 1@4!.
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ARIN!IA;"-S ARIN!IA;"-S !OMAON-NT-S D-" SIST-M; D- -NBRI;MI-NTO. Bomba de agua:
-s u#a +om+a me'$#)'a3 mov)(a por u#a +a#(a (e 8u*e3 %ue 8a'e ')r'u*ar a* *%u)(o a#t)'o#e*a#te por e* s)stema s )stema (e e#&r)am)e#to.
Radiado:
Su pr)#')p)o +$s)'o es e* (e )#ter'am+)ar e* 'a*or 'o#te#)(o e# e* *%u)(o tra#s&er)r*o a* a)re %ue ')r'u*a a travs (e *. -sto se *ora pasa#(o a* *%u)(o por e* )#ter)or (e u#os tu+os (e a*um)#)o %ue a su ve: est$# ro(ea(os (e (e*a(as a*etas (e* m)smo mater)a* %ue 'o#(u'e# a* a)re e#tre *os tu+os. ;* pasar e* *%u)(o por e* tu+o3 tra#sCere su 'a*or a* m)smo= stos tam+)# tra#sCere# e* 'a*or a *as a*etas (e a*um)#)o %ue a su ve: ()s)pa# ese 'a*or 8a')a e* a)re %ue ')r'u*a e#tre e**as. Aara ma#te#er e* >uo (e a)re a travs (e* ra()a(or3 a<# 'ua#(o e* ve8'u*o est$ para(o para ma#te# ma#te#er er *a tempe temperat ratura ura (e#tr (e#tro o (e *os *m)te *m)tess prees preesta+ ta+*e' *e')(o )(os3 s3 *os s)stemas (e re&r)era'),# )#'orpora# a(em$s u# ve#t)*a(or.
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!e"#i$ado:
Se u+)' u+)'a a pea( pea(o o a* ra() ra()a(o a(orr e# *a part parte e post poster er)o )orr. -ste -ste pue( pue(e e se serr e*'tr)'o3 'o#tro*a(o por *a 'omputa(ora (e* motor -! o por a*<# se#sor3 o+te#)e#(o su &uer:a para )rar (e u# motor e*'tr)'o3 o +)e# me'$#)'o mov)(o (e ma#era perma#e#te por e* m)smo mov)m)e#to (e* ')Ee6a* o3 e# (eterm)#a(os 'asos e# 'o'8es m$s mo(er#os3 a't)va(o (esa't)va(o (e ma#era e*'tr)'a por u# se#sor trm)'o o *a -! m)sma. -# 'ua* 'ua*%u %u)e )err 'a 'aso so33 *a &u#' &u#'), ),# # (e* (e* ve#t ve#t)* )*a( a(or or es *a (e ma ma#t #te# e#er er *a temperatura (e* *%u)(o re&r)era#te (e#tro (e* ra#o trm)'o re%uer)(o para su +ue# &u#')o#am)e#to.
Temo%#a#o: Se trata (e u#a v$*vu*a %ue perm)te o #o *a ')r'u*a'),# (e*
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;*re(e(or (e* ')*)#(ro t)e#e u# resorte %ue *e perm)t)r$ reresar a su pos)'),# #atura* (e 'erra(o u#a ve: %ue *a 'era se e#&re (e #uevo. "a v$*vu*a perma#e'er$ 'erra(a (e+ao (e *os 90! se a+r)r$ 'ua#(o *a temperatura (e* *%u)(o a*'a#'e *os 100!. !o# esto se perm)te %ue e* motor a*'a#'e su temperatura )(ea* (e opera'),# e# me#os t)empo.
Ta&'" de$ adiado:
;* ser u# ')r'u)to 8ermt)'o es #e'esar)o te#er u#a tapa %ue se**e e* s)stema por (o#(e es re**e#a(o. -* tap,# est$ ()se6a(o para ma#te#er e** ')r'u) ')r'u)to to 'erra(o 'erra(o 8asta 8asta ')ert ')erta a pres) pres),# ,# e#era e#era*me *me#te #te 1F *+ a+r)r a+r)r 'ua#( 'ua#(o o es esta ta pres pres), ),# # es super supera( a(a. a. -s #e'e #e'esa sar) r)o o te#e te#err u# tap, tap,# # e# e'e*e#tes e'e*e#tes 'o#()')o#es a %ue sera *a pr)mera &ua #atura* (e* s)stema.
()*uido e+igea"#e o a"#i,o"ge$a"#e:
-s e* >u)(o e#'ara(o (e tra#sportar e* 'a*or e# sus mo*'u*as para )#ter'am+)ar*o o *)+erar*o e# e* ra()a(or3 su &u#'),# e# otras pa*a+ras ser$ *a (e a*ma'e#ar e* 'a*or (e* motor para e*)m)#ar*o.
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Ma"guea%:
-* re&r)era#te o a#t)'o#e*a#te va (es(e e* motor 8asta e* motor a travs (e u#a ser)e (e (u'tos tu+os >e)+*es **ama(as ma#ueras. Buertes uertes a* m)smo t)empo t)empo >e)+*es >e)+*es %ue pue(a# to*erar *a v)+ra'),# v)+ra'),# (e* motor e* 'a*or )#te#so. Norma*me#te e)ste# (os pr)#')pa*es sa*)e#(o (e* ra()a(or (e &orma opuesta pero pue(e# e)st)r 8asta a*re(e(or (e @0 metros (e ma#uera e# u# autom,v)* 'om<#.
;*u#as partes (e* motor %ue se (e+e# e#&r)ar 'o#sta#teme#te so# H !$mara (e 'om+ust),# H Aarte a*ta (e* ')*)#(ro H !a+e:a (e* p)st,# H $*vu*as (e es'ape (e a(m)s),# H !)*)#(ro "os s)stemas (e e#&r)am)e#to mo(er#os est$# ()se6a(os para ma#te#er u#a temperatura 8omo#ea e#tre F2 11@!. # s)stema %ue #o 'ump*a *os re%u)s)tos %ue se e)e# pue(e pro(u')r *os s)u)e#tes e&e'tos J Desaste prematuro (e partes por so+re'a*e#tam)e#to3 so+re'a*e#tam)e#to3 e# espe')a* e# e* p)st,# 'o# *a pare( (e* ')*)#(ro
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J !orros),# (e partes )#ter#as (e* motor J -#tra(a (e re&r)era#te a *as '$maras (e 'om+ust),# J Buas (e re&r)era#te 'o#tam)#a#(o e* a'e)te *u+r)'a#te J -vapora'),# (e* *u+r)'a#te J Borma'),# (e pe*'u*as )#(esea+*es so+re e*eme#tos %ue tra#sCere# 'a*or 'omo *os (u'tos (e* ra()a(or J So+re'o#sumo (e 'om+ust)+*e J Borma'),# (e *o(os por +aa o a*ta temperatura e# e* a'e)te *u+r)'a#te -s por to(o esto )mporta#te 'o#o'er ',mo tra+aa e* s)stema (e e#&r)am)e#to3 *as 'ara'terst)'as %ue (e+e te#er u# +ue# re&r)era#te o “a#t)'o#e*a#te” *as a'')o#es %ue pue(e# a&e'tar (e ma#era #eat)va a* e#&r)am)e#to (e* motor.
OKL-TIO D-" SIST-M; D- -NBRI;MI-NTO J Re(u')r *a temperatura (e#tro (e ra#os seuros (e opera'),# para *os ()&ere#tes 'ompo#e#tes3 ta#to eter)ores 'omo )#ter)ores (e* motor J D)sm)#u)r D)sm)#u)r e* (esaste (esaste (e *as partes
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J Ma#te#er e* re&r)era#te e# esta(o *%u)(o ev)ta#(o su evapora'),#. -sto -sto se *or *ora a a* 'a 'am+ m+)a )arr e* pu#t pu#to o (e evap evapor ora' a'), ),# # (e *a sust susta# a#') ')a a re&r)era#te J Ma#te#er e* re&r)era#te e# esta(o *%u)(o ev)ta#(o *a &orma'),# (e 8)e*o a* +aar *a temperatura am+)e#te3 esto se *ora a* 'am+)ar e* pu#to (e 'o#e*a'),# 'o#e*a'),# (e *a *a susta#')a re&r)era#te J -v)tar *a 'orros),# J Te#er u#a ra# 'apa')(a( para )#ter'am+)ar 'a*or. -* aua es e* >u)(o (e e#&r)am)e#to +$s)'o por%ue es a+u#(a#te3 +arato >ue 'o# &a')*)(a(. "os pro(u'tos %um)'os %ue 'o#t)e#e u# +ue# a#t)'o#e*a#te meora# meora# *as prop)e(a(es prop)e(a(es (e* aua *a *a 'o#v)erte# e# u# e'e*e#te >u)(o (e e#&r)am)e#to. -stas susta#')as est$# ()se6a(as para re(u')r *a &orma'),# (e espuma3 re(u')r 'av)ta'),# ev)tar *a 'orros),#. "a +ase +ase (e 'a 'as) s) to(o to(oss *os *os a#t) a#t)'o 'o# #e* e*a# a#te tess es e* et)* et)*e# e#* *)' )'o* o* o e* prop)*e#*)'o*. !as) to(os *os &a+r)'a#tes re'om)e#(a# u#a me:'*a (e 50 (e a#t)'o#e*a#te aua m)ta( m)ta(3e# $reas mu &ras *a me:' me :'*a *a pue( pue(e e se serr m$ m$ss 'o 'o#' #'e# e#tr tra( a(a a pero pero e* *m) *m)te te es 7 7 2/@ 2/@ (e a#t)'o#e*a#te 1/@ (e aua.
!";SIBI!;!IN D- "OS SIST-M;S D- -NBRI;MI-NTO
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-stos s)stemas so# mu 'o#Ca+*es a %ue #o prese#ta# &uas (e *a susta#')a re&r)era#te pero #o so# ta# eC')e#tes 'omo *os %ue ut)*):a# u#a susta#')a *%u)(a a(em$s (e %ue propor')o#a# u# meor 'o#tro* (e *a temperatura e# *os ')*)#(ros *a '$mara (e 'om+ust),#. A;RT-S D-" SIST-M; SIST-M ; D- -NBRI;MI-NTO -NBRI;MI -NTO AOR "PQIDO ;* s)stema (e e#&r)am)e#to por *%u)(o *o &orma# 1. Ra()a(or 2. Tap,# (e ra()a(or @. Ma#ueras 4. Termostato 5. e#t)*a(or . To*va 7. Kom+a (e aua F. Ao*eas +a#(as 9. Dep,s)to re'upera(or pu*m,# 10. !am)sas (e aua 11. I#ter'am+)a(or (e 'a*or (e a'e)te para motores a ()ese* 12. Ku*+o (e temperatura !IR!ITO D-" "PQIDO R-BRIG-R;NT- -N -" MOTOR
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*%u)(o 'a*)e#te es )mpu*sa(o por *a +om+a (e aua e#v)a(o 8a')a e* ra()a(or pasa#(o por e* termostato 'o#'*ue#(o as e* ')'*o. !ua#(o e* motor est$ por (e+ao (e *a temperatura (e opera'),#3 e* termostato +*o%uea e* >uo (e aua 8a')a e* ra()a(or3 ')r'u*a#(o ste so*a so *ame me#t #te e por por *as *as 'a 'am) m)sa sass (e aua aua para para e*ev e*evar ar *a temp temper erat atur ura a (e ma#era 8omo#ea 8asta u# #)ve* ,pt)mo. -# (as &ros e* termostato perm)te ape#as *a ')r'u*a'),# (e re&r)era#te suC')e#te a travs (e* ra()a(or para e*)m)#ar e* e'eso e'eso (e 'a*or ma#te#er ma#te#er u#a temperatura temperatura a(e'ua(a e# e* motor. -# (as 'a*urosos es pro+a+*e %ue e* termostato est a+)erto por 'omp*eto.
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5. ;*etas e# e* ')*)#(ro . Ku*+o (e temperatura 7. Ra()a(or (e a'e)te F. To*va !IR!ITO !IR!ITO D-" SIST-M; D- -NBRI;MI-NTO AOR ;IR- -N -" MOTOR #a +a#(a a'op*a(a a *a po*ea po *ea (e* ')Ee6a* mueve *a po*ea (e* ve#t)*a(or3 esto provo'a e* mov)m)e#to (e* a)re por *a to*va 8a')a *as a*etas (e *os ')*)#(ros (e* motor. "a 'a#t)(a( (e a)re )#tro(u')(a se (eterm)#a por *a pos)'),# (e *as mamparas 'o#tro*a(as por e* termostato3 u#a ve: %ue so# e#&r)a(os *os ')*)#(ros parte (e* a)re se 8a'e pasar 8a')a u# ra()a(or e* 'ua* 'o#t)e#e e* a'e)te *u+r)'a#te para +aar su temperatura. -* a)re 'a*)e#te es (ese'8a(o (e* motor a travs (e u#as re)**as se vue*ve a )#tro(u')r a)re &res'o para )#)')ar e* ')'*o. -# a*u#os ve8'u*os este a)re 'a*)e#te se )#tro(u'e a *a 'a+)#a 'omo parte (e* s)stema (e 'a*e&a''),# meorar *as 'o#()')o#es (e 'o#&ort (e *a m)sma.
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tam+)# es res)ste#te a +aas temperaturas a %ue s) e* *%u)(o se 'o#e*a pue(e epa#()rse (a6ar a<# m$s e* s)stema. !a(a u#a (e *as partes %ue 'o#&orma# e* s)stema (e e#&r)am)e#to t)e#e u#a )mporta#te &u#'),#. S)# e* termostato3 por eemp*o3 e* *%u)(o estara ')r'u*a#(o (e* ra()a(or a* +*o%ue3 *o %ue #o au(ara a* mome#to (e 'a*e#tar e* motor. "os s)stemas (e e#&r)am)e#to (e u# motor re%u)ere# (e u#a rev)s),# /o ma#t ma #te# e#)m )m)e )e#t #to o per) per),( ,()' )'o o para para su 'o 'orrre' e'to to &u#' &u#')o )o#a #am) m)e# e#to to.. -ste -ste ma#te#)m)e#to pue(e ser (es(e )#spe'')o#ar e* #)ve* (e re&r)era#te 8asta 8asta 'am+)o 'am+)o (e a*u#a a*u#ass partes partes 'omo 'omo ma#ue ma#ueras ras rotas rotas33 'am+)o 'am+)o (e re&r)era#te3 et'. ;* #o 8a'er esto po(emos o'as)o#ar (a6os e# e* motor3 e# 'am+)o 'o# u# +ue# ma#te#)m)e#to po(emos aume#tar *a v)(a