SE1551382A1 - A cooling system for a WHR system - Google Patents

A cooling system for a WHR system Download PDF

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Publication number
SE1551382A1
SE1551382A1 SE1551382A SE1551382A SE1551382A1 SE 1551382 A1 SE1551382 A1 SE 1551382A1 SE 1551382 A SE1551382 A SE 1551382A SE 1551382 A SE1551382 A SE 1551382A SE 1551382 A1 SE1551382 A1 SE 1551382A1
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SE
Sweden
Prior art keywords
systern
line
iine
valve
radiater
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Application number
SE1551382A
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Swedish (sv)
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SE540931C2 (en
Inventor
Hall Ola
Kardos Zoltan
Timrén Thomas
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Scania Cv Ab
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Publication date
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Priority to SE1551382A priority Critical patent/SE540931C2/en
Priority to DE102016012528.4A priority patent/DE102016012528B4/en
Publication of SE1551382A1 publication Critical patent/SE1551382A1/en
Publication of SE540931C2 publication Critical patent/SE540931C2/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
    • F01P3/2285—Closed cycles with condenser and feed pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/065—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle the combustion taking place in an internal combustion piston engine, e.g. a diesel engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
    • F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F01K23/101—Regulating means specially adapted therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The present invention relates to a cooling system for a WHR-system in a vehicle (1). The cooling system a first valve device (6, 27) configured to receive coolant from a coolant line (5) and direct it to a radiator line (7) and a radiator bypass line (9), a second valve device (23) configured to receive coolant from the radiator bypass line (9) and direct it to a condenser line (22) and a condenser bypass line (24), and a control unit (10) configured to control the first valve device (6, 27) and the second valve device (23) such that the coolant directed to the condenser (18) has a temperature and a flow rate which resu lts in a cooling of the working medium in the condenser (18) to a desired condensation temperature/pressure at the actual operating condition,. (Fig- 1)

Description

”EG 2G St) A cooling systeni for a ll/Vlí R syfsteni BACKGRKÉUND OF THE ÉNX/'ENTltÉÉN /ÄND PRIÜR, /ÄRT The present invention relates to a cooliiig systeni for a ÉVHR~ systern according to the preainhle of claiin i , A häll-itä systern (fvlvfaste Heat Recovery' System) can he used in vehicles for receveriiigyvaste tiierrnal energy and con feit it to ineeliairical energy or electric energyf. A WHRsysteni includes a purnp which pressurizes and rsirciilates a working niediuin in a,ttlriseil circuit. The ttirciiit cornprises one or stäveral tfyztiioiators where the Vworkintgmedium is heated and evaporated hy one er several heat sources such as, for' example,the exhaust gases frein a cornhustien engine. 'the pressurized and heated gaseousyverhiiig rnediiini is directed te an expaiíirlräi* ivhrzire it expaiids. The expaiitler generatesiriettliaiiical eriergyf tifhich :frin he used to tiperaite tite vehicle or apiiztratiises en tiievehicle. Alternativeiy, the expanrler is connected to a generator generating electricenergy The tyorking nrediurn leaving the expander direeted to a, conderiser. TheWorking iiietliuin is rficieled in the condensei" to a teinperatiire at whicli it condenses,The liqiielied yifrirkiiig rnetliiini is retliiectetl to the puirip »vhicli press urizes themedium. 'Üi\hus, the iifaste heat energyf ironi, for exainiile, the exhaust gases front acornhustion engine in a *vehicle can the recovered liy rneans of a “iäfllllš-sjyfstein.Consequeiictlyf, a XKfHR-systeni can :reduce the titel consiiniiatiriii of a conihiistion eriginte, ln order to achieve a high therinal efieiencfyf in a “ihfHR-syfsteiii, the ttforlririg nieditinrin the. condenser is to he coeleti te a condensaction teinperatiire lova as possible andsuhstantiaillyl wvitlioiit subcoeliiig, Conseqiireiitlyf, in order to achieve a hi gh tiieririztiefficiency' in a 'tt/li Rflsuvsterii, the ttforkiiig inethuiii is te he ceeied »ifith a suitahieceoling effect. Hett/etter, the stiitaible cooling effect of the tvorking inediuin in thecontienser varies during ditfereiit operating conditions such as *with the lieat effect supplied trotn, ftir exaniiple, thte exhaust gztses to the tävaiitiraitrii: Since the supplied C51 ”EG 2G St) heat trein exhanst gases can vary rapidiye, it is difticnit te centintieiisiy pretfide aceeiing effect ef the tverking niediuin in the cendeiiser restiiting in a high therniai eftitiiency ef at Wïíišsjøsteiii.
U 2013/(3118423 shows a ceeiing, circuit with a circniatiiig ceeiant Which ceeis anieter. The ceeiing circuit ceniprises a ceehng iine Where the ceeiant ceeis a vverkinginediiini in a cendensiäi* of a “iÃ/'HR-sfysetern and a, bypass iine ieading the rneditini pasttiie itenden The tteeiztrit thiwv tiirciighi the bypass line is centreiied hy a reiief ifaitie vvhicii epen at a specific pressure.
SUhíh/ÉARY OF THE ÉBWYENTIGN The ebj ect efthe tiresent inventien is te tirevitie a ceeiing systern tvhich abie teatijtist the ceeiing effect ef a iaferhiiig rnediuni in a eendenser ef a “tåïHiš-sjtfstern in aquick and sinipie inanner in cirdfzi* te siibstantiaiiy tfeirtinurinsiy' estabhsh atttiiititëiisatitiii tenipeitatiire/pressiire ef the vveriring iriediiiiri in the cenderisei' at Vwhicii the tRfi-Eiš systern receives a high therrnai efficiency.
T he above iiientieneti tihiect is achieved by ethe ceeiiiig systern acirertiiiig to ethectiaratttterizifti pztrt rifciaiiini t, T he iirst ifattve titëvice niakes it riessiibti: te :iii/ide thereceived ceeiant iiew in a first ceeiant tiew tiirengh the radiater and a seeend ceeiantfiew threugh the radiatei' byiiass Eine. 'Üfhe first eeeiant fEeW ehtains a ieWerteinperature than the setieiid ceeiant fiew ifvheii it is ceeieti in tiie radiater. Thus, it ispessihie te create twe ceehtrit tieW titidiifferenit fiew rates aiid ttiffererit ternperattnresby' the tirst wfaive ttevice. The first ceeiaiit tievv ieavirig the radiatei' is directed te thecendeiiser iniet iine. The seeend eeeiant fievif in the radiatei' hjypass iine enters the secend valve deviife ivhich ttirrects a part ef the seceiitt ceeiant flew te ethe cendenser irii et Eine aiifd a reinztiniing apart et' the secerirt tttietarit tietv te the cenderisiëi' bytiass line.
'I“iins, the secend *ifaive device inakes it pessitiie te stippiy an arhitiaifiy part ef thewvanner seeend ceeiant fieW te the ceeiei' first ceeiaiit fievr and direct the iiiixtnre tethe tieiidiiiiser intet iine fer ceeiiiig ef the ifverking iiieditirn in the cendensfzi: Atteiititfei iinit centrets the iirst ifarive itevitte aiiti the setteiiii 'valve rita/ice such thatceeiaiit directed te the cenderisei' has a temperature aiiti a fEeW rate resuitirig in aceeiing ef the iiferking rneditini in the cendenser te a desired eendensatien teinperature/pressure.
C51 ”EG 2G St) .According te an einheriiitieiit ef the iiiveiitien, the centret unit is centigiireit teestiinate the required ceeiing effect of the ceeiing systern and te control the first valvedevice such that it tiirrzets a ceeiant fiew rate te the ratiiater which results in a ceeiingetitfettt ef tiie tteeiaiit in the iradizttiir iii' a crirrfifsperidirig si ae the reeiiireii crieiirigeffect ef the ceeiing systern. in this case, it is pessihie te niaintaiii a therniai haiance hetvveeii input and output ef tiierrnai e ergy te the ceoiant in the eeeiiiig systeni.
Aceertiing te an eirihririiirient ef the iriveritiiin, the tirst vfaivfe iteviate is a tiir :e v rayvaive. 'The three Way vaive inay ceinpiises ene iiiiet epeiiirig and tvve riutiet epeiiirigs.The three vvay valve receives, yriai the iniet epenirig, a eeeiant fiew frein a iine ef theeeeiiiig system and tiireets a first part ef it, via a first entiet ripeiiing, te the radiatei"iine and. a secerid part ef it, via the secerid eutiet iipeniiigr te the itfariizttiir iiypaiss iinein this case, the tirst *uaiftfe tievice designed as a single ivaiftfe. Pretierahiy; the firstvaive device is acijustahie in a stepiess rnanner. in this case, it pessihie te vfary theeeeiant fiew rate te tiie radiater iine anti the ratiiater bypass iint? With a high aeciiraey:Aiteiiiativeiy, the tirst vaive iirëvice is designed tive tvve vtfziy vaives vviirëreiri av firsttvve Way vaive is airanged in the raitiattör iniet iine and a second twe Way *tfaive is arranged in the radiater ifiypass iine.
Actceriiirig te a tiirthrer ziiterfnative, the tirst vfaivfe iievitte tteiritiifistës a tiierniiistait, atiierinestat 'bypass iine and a vaive crintrriiiing the titöw rate threngii the therniestatbypass iine. in this case, the therniestat directs a first ceeiant tieW te the iadiater iineand a setseiiti ceeiaiit fiew te the ratiiater bypass hne depending en the teinperattire eftteeiarit. When the tteeiant teiritierattirtë i heiew a reguiaitisrig tafiriperzttiire ef thetherniestat, it is possihie te ripen the *vaive and provide a sniaii first ceeiaiit tiewthrough the tiiennestat iïiypass iine and the radiater Eine as a cenipieinent te the seeendeeeiaiit tievv' tiirengh the radiatei* bypass line, Thus, it is aise pessihie during sueh tiperzttiiig cenditiens te iirfevfiiitf tvve iteeiaiit tiiiws ef di tiferent terniififirtitiires, Accerding te an einhediinent ef the inventien, the first vaive device and/er the secendvaive tievice are tiesigneti te :fritid net sniaii ceeiaiit fiew rates Witii a iiigher aetiuiracy*titan target' ceeiant ti ew rates, During riiierzttiiig cenditiiinrs i/viien the ceeiant has areiativeiy' iew terriperattire, the first vaive device fiirects a sniaii ceeiant fievv ratethrough the iadiater iine. 'Üfiiis sniah ceoiant fievv rate is niixeti tvith a sniaii tifarnieeeiaiit tievv' rate freni the iradiater bypass iine by the second valve device. hetere the iriixttire is riirtxtteit to the cenderiser: in iiidei' te iihtairi a required crieiztrit ternperatnre C51 ”EG 2G St) of the niixture \with a high accuracy, it is suitahle to use a iirst valve device and asecond valve device tvith the ahotfe nientioned design. The first valve devices inayconiprise a. v/alve nieinher niovahlja arranged tvitliiri a. inowernent range haixiiig anextent between a tiifst erid positi on in which it rlirtëttts rio itoolaiit tlovtf to the itfatlizttiirline and a second end position in which it directs the entire coolaiit tflow to the radiatorline. The nioveiiient range for the tfalve inenilaer at tvhieli it direets sniall coolant tlovvsto the radiator lirre is greater than the. niovenierrt range for the *valve inemher at tvhichit iliirects laifgrfi” coolant il owfs to the radiator. The secorid valve tievfitte niay lizive a correspoiidiiig design as the first valve flevice.
According to an riinhorliinent of the invention., the seeorrrl valve device is a three vvay'vratlve. The three vway tfztlve receives tt ctoolant tlotv tiom the iadiator liypass liite anddirecis a part of the cool-ant llovw to the crindenser iiilet line and a reinaiiiiiig part ottheeoolant flovif to the condeiiser hypass liiie. lt niay also direct coolant front the iadiatorline to the condenser bypass line. ln ithis case., the seeorrrl valve device is designed. as asintgltë tfztlvtë. Pretferahlyfi, the second valve device is adjustahle in a stepless iri-aririer. lnthis case, it is possible to adiiust the cool-ant tlow rate to the conflenser line and thecondeiiser hypass line vvith a high aceuraejyf. falternatively, the second valve detfiee isdesigned. as tvvo two; v/ay valves vvhereiii a lirst two v/ay valve is arranged in theeoriderisrfr' inlet line arid a seeondt two vvay 'valve is zirrangerl in the eontleiistïi' bypass line. lftcrfcirtlirig to an enihodinieiitt ot" the iiiveiitiorr, ttlie control unit is conligitred to receiveiriforniatiori trom a terriperattirtë stfnsor aliout the tenipieiratiire ot* the tfoolarit tlotv in thecondensei' inlet line. in order to rirovirle a cooling of the viforltiiig inediuni in thecondeiiser to a desired temperature, it is important that the coolant llotv to thecondenser has a retttiiretl temperature. hr this tfase, the ttoiitrtil unit receivesiritforrrizttiriii zihout the actual teinpiëitfatiire 'oil the ttoolarit in the condeiisiär' inl et line. lncase there is a ditlfereiice between the actual temperature and the required coolantteniiierattire, the control unit niay atljtist the first valve device and/or the second valve device in order to eliniiiiate this ditlierencrä.
.According to an ernhorliiiieiit oil the iiiveiition, the control unit is contigurerl to receiveinformation front a sensor sensing a parainetei' related to the actual eondensingtemperattire/pressuire of the vveirhirig meditini in ttlre condenser. lir there is a. dittiferen ce hetvveen the actual itæinp:fratiire/ipressuie in the ttoiiileriser and the desired C51 ii) 2G 3G ccnderisatitin temperature/pressure, the cciitrci unit niay adjnst the iirst vaive device and/cr the second ifaive device in crtier te eiirniiiate this difference.
Attcniiiiiig to an enribtiiiiiiiiiiit tit* the iiivtäiitiicii, the tteiitrtii iiriit is een tigiireii te ctintreithe tirst tifaive device and the secciici vaive device siieh that the cceiaiit directed to theccrideriser has a teiniieratiire and a iioii/ rate 'Which esiiits in a cceiing of the iifcrkiiig inediiini in the ccndenser te a, tfciitieiisaititiii pressure _iiist above i bar. it is iieariy' aiways ipessiiiie 'in provide a ceeiaiit tiew rate tiirtiiigii tiie cericierisei* i/viiicii riësiiits iii a. cceiiiig of the ttvcrking nieciinin iii the cciicieiisei' te a desired cciideiisatieiiteniperatiire/pressiire at different cperatirig ccntiiticn. Hcvifeier, hy practical reascns,it is iiiaiijyf tiines suitahii? tc avcici negative pressiires in a iifiißsystfzin. iii this trase, itis suitahii: to iihtain a itcniienszititiii i, *essiire just zihtwe i iiaii Tiie iiesireti tiifessiiirferange rnay, ter exainpie, he in the range i, i - i, 5 har. it te iie netefi that accriderisatiiin iiressiire fcr a iifcrkiiig inediiini iias a ccrrespcnding cenciensatien temperature.
.Acccrciiiig te an eniiietiiiiieiit ef the iiiveiitiian, the vvcrking rnediiiiii in the \Å"i-iiš~system is etiiaiiei. Ethanoi iias an evapcration teiniieratiire of about 78ÛC, at i har. it isreiativeijy easy te actfcinpiisii a tzeniatnt temperature at a suitahie ievei hcicw ttiieevaperzttiiiii tiëniiiifiiitiire titfetiiiainei ziriti 'feet the etiianei in ai centieristfi* te aceiideiisatieii teiiiperatiire just aheve 78%. i-iciwever, it is possihie tc use etiiei' iifcrkiiig inediiinis such as for exanipie iå245fa.
Accertiing te an eirihtitiiirient ni the iriverititin, the ceiitrei tiiiit niay he cniiiigiiiftfti tereceive iiiferniatiiin ticrn a teinperature seiiscr aiioiit the teriiperatnie ef the itfeiiziiiginediiiin in a ccncienser oiitiet iine. in this case, it is iicssihie to detect the acttiaisiihtïcitiiing ct" the iifciriiiiig rnediiiin in ttiie ttontienser. iii order in ensure that aiiVweriring iiietiiiiiri iii the cencieiistii* is ttcniiensed, it is iieciëssztrjy te aiiciif a ceitatinisiihccciing otthe iverkirig niediiiiii. i-ieiweifer, it important that the siihciieiiiig isreiativeiy sinaii since it redtices the tiierinai efficiency' iii a iifHR-systeiii. in tiiis catse,it is pessihie inr the centroi unit in be iiiiitiriiiifti of the actiiai snhceeiiiig and te acijiistthe tirst ifaiife tievice :ina/ftir the secciiti ifaivi: device: in tirtiei' te eiiniiiiate a possible ditftference between the actiiai suiicoeiiiig anti a fiesireti siihciiiiiiiig.
According in an iiinbctiiinent ef the inventicn., the ceeiing systeni is aise trcntigiireti to ceci a itcnibiistitini engine. in this caise, the ceeiing systern is iiseti te ceei tiie C51 ”EG 2G 3G cemhirstitan eingirie as vveii as the eferkiiig rnedium in the ctrndenser ef the *shit-itäsystem. Thus, ne additional eeeling systern rieeds te the used. The centret unit iseentigtireai te receive inferiiíiatien freni a. tenrperasturf: sensor sensing tlie tr2rnperztttireef the eeelant in an engine entlet liite. By rneans et' this iniferrrrzttitiric it is ipessiinie ferthe eentrei unit te aditust the tirst centret device and the secend centret device suchthat the eernhnstien engine and tiie ttferkiiig mediuni in the eendenser receive a required tteeling ef the eeelariit in the tieeiing system.
.According te an einhetiiiiierit et" the iriveritien, the vverking niediurn is heated in anevaperater ef the ÉVHR-syïšteni hy means ef exhaust gases frern the eemhtistienengine. The exhaust gases frem a eernbusstien engiiie eentairíis a let ef heat energy;vwhiatli itsnailyf is supplied te the eriviriinnififiit. By rnearis 'eti a ivivfiiíR-systern, it is iiessiiile te recever a large iiart ef the heat energy in the exhaust gases.
BRÉEF DESCRIPTÉON OF THE DRAftÃ/'ÉNGS in the tfeiitrvifing preterred ernhedirnents efthe iriveritien is described, exanipies, tvith re “erence te the attached dravvings, in tvhicli: Pig. i siievxs a ateelirrg systern anteertiing te a tirst ernhcttiirrientt ef the irwerttitinandPig. 2 sheWs a eeeling system aeeerding te a. first enihedinrerit ef the iriventieii.
DETIÅIIJEÜ ßiïSCRlPTitiïtN OF ÉREPERRLED iÉh/íBGÜlh/TEENTS OF TliišiN\7EiN'I'lOiN Pig. l siíirnvs a. seheiiíiatitttally diseteseti vehicle i pevvered. hy a tfeiiihiistien engine 2.Tite tfeiiieie l niay be a heavy vfetiielfif arid the atrirriinustitin errgirre 2 rnay he a. dieselengine. The vehicle l eernprises a eeeiirig systern ctrniprising, an engine iniet iine 3 provided vtfith a pump 4 eircuiatirig a ceeiant in the eeeling systern. Vit/Then the ceeiant has eireiilated threngh the tfeinhustiriii engine 2, it is reeeivfeti in an engine eutlet line 5.
A tirst 'valve tieviee in tiie tenn. el' a tirfst tirree Way sfalve 6 is arranged at an 'erid el' theengine eutiet line S. 'the tirst three Way valve ti has ene intet eperiing aind tive eutietepeniiigs. The eeeling sjyfstem eeiniïfrises a radiater line 7 direeting eeeiant through aratiiater S. The radiatrii" line 7 eeniprises a radiatei" inlet liite 7:a, anti a radiater entlet line Yh. The ateeling systern eitniprises a. ratdiatrir' hytiass line 9 tiireetirig eeelant pztst C51 ”EG '15 2G 313 the radiater 3. 'The tiist three ivay vaive (i is etintirehed hy a eentrei ”uiiit 11). 11ie tïrstthree ivay* vahfe e is at1itistah1e in a stepiess nianner. 'Thus, it is pessih1e fer t1ie firsttiiree. vvay vfatyrr: 6 te receive tteeiant frein the engine entiet 1iiic 5 via the in1ct epeniiig:mid tiistrihiitrf a first part ef it te the irariiztter 1ine 7 *Jia a tiifst riut1et erieriirrg aint a seeenf1 reinainiiig part et* it te the radiater hyfpass 1ine 9 *via a seeend eiit1et eiieniiig.
The yfe1iie1e is provided yvith a iVHR-systeni (Waste Heat Recevery systeni). The“WHR- syfstfifiri tteriiriristës a puiriri 12 yvhieh. riressuiuizes aint eireii1ates a wer1riiigrnetiiuni in a e1eset1 a eireuit 13. hi this case., the Werkiiig inediuni ethaiitii. E-Tetiifeiver,it is pessihie te use ether kinds ef viferhirig nieditinis such as fer exanipie Rlïßlífa. Thepump 12 pressuirizes anti eircinates t1ie viferkiiig inediiiin te an exfaperater 1-4. Thevwerkirig iiieriiiiiri is iieatttari in the 'ei/arieratrii' 14, fbr exatriipha, hy exhaust gatses ffreinthe eernhustien erigine. The Werking niediurn is heateti in the evaperattir 14 te ateniperattrre at ivhiehi it evaperates. The iverking nieciiurn is eircuiated freni theexfaperater 1-4 te the expander 15. The pressiirised anti heateti v/erhing iiiectiuintaxrpariris in the extianeer 15. The extianeer 15 gtaneifates a. retary rnetieri vviiieh niay hetransinitted, via a suitahie nieehaniea1 traiisniissieii 16, te a shaft 17 etithe iievifer trainef the vrehic1e 1. .ffkiteriiativfehyfg the extiarider' 15 niay he eeniieeteti te a ge eratertraiisterniing iiieehanittai riiiergy' inte e1eetrica1 energy. The e1etïtrica1 energy' rnay hestriree in a hatteryf. The strireri eitëetriitai taiieitfgy' ean he supphed te ein e1ectitfiea1 engine ter driving ef the vehie1e er a eernpeiieiit en the vehie1e in a Tate-r state. ifittrzr the v/erking iiiectiurn has passect t1ireii gh the expander 15., it is tiizreeteti te acttiriritëriser 18. The vwerkiiig rneriiirrn. is eee1ei1 in the eeriderisei' 18 hy tfeetarit treni theeeehiig system te a ternperatirre at ivhieti it cencierises. The iverking niediturii isdirected frem t1ie eendenser 18 te a receiver 1 91. 'The presstire in the receiver 19 can hevarieri by ineans ef a. pressure reginater 19a. The puiiip 12 seeks Werkiiig nirzriiuinfrern the hetteni ef the reeeiyer 19 taiisurirrg that eni y ytferkirig nieriiuiii in a hquid stateis siippheci te the iiunip 12. A seeend eehtrei unit 213 eentreis the eperatieii ef the“itif1e1R-syfstein. The seeeiiti eentre1 unit 2G eentreis the eperatien ef the punip 12 andthe expaiitirii* 15. The EVER-system niahes it pessihie te transferni thernia1 energy' firenithe 'exhaiist gastës te rrierthaiiiea1 en 'ergy er eitaetriitai tarirfrgyz A teiiitierzttiire stariser 21er a pressure senser senses the eentiensatieii teniiieirature er the eendeiisatieii pressure in t1ie cendenser 18.
C51 ”EG 2G 3G The temperature tifesliaast gases and thus the heating eftect otithe vvorkiiig nieditiin inthe eyaporator 14 tfaries during different Operating conditions. ln order to niairitain asuhstantially' eontiriuotislyf high therrnal etfrciencyf in the ll/'HR~syYstern, the *workingirieiliiini in the :tendenser 18 is to he cooltëtl yvith an atljustithle erioling tillåtet. lt istavouralile to estahlish a condensatitin piresstare as low as possible at the differentoperating conditions. leloytfetfer, it is suitable to atfoid negative pressure in the WHR~systern hy practical reasons ln view' of these facts, it is suitable to provide a tftioling ofthe yitoiltiitg irieiliiini in the :tendenser 18 to a, conderisatifori pressure just above lliar.(Éoitsetnientltyf, in order to inaintain a high therinal elificieiicyf' it is necessary to adj astthe cooling effect of the *Working niediuiii in the contleiiser 18 in yiety* of the suppliedheat energy' front the exhaust gases such that the condensation pressure. will he _iust'above 1 liitr. The yiftnfkiiig rnetlitint ethaitol lias a, condetisati on teiriperattirtë of 78°t§ at lhar. ln this case, it is suitalile to accornplislt a condensation temperature ofjnst ahove 78°C in the conderiser 18.
Tlte cooliitg systtënt cornprises a, condetister' line 22 diretttirig ttoolaiit tltiroiigll thecondensei' The conderiser line 22 coinprises a condeitsei' inlet line 22a directingcoolant froin a radiator outlet line Th to the contleriser 18. "llhe condensei' line 22conrprises a condenser* outlet line 22b tlirectiiig coolant froiii the condenser l8 to theerigine irilet line 3. A second Valve detficte in the tiorrn tuta settond tl *ee tyay tfalve 23ireceives a coolant thnif troin the radiator bypass line 9. The second three tiyay tvalve 23is controlled hy the control unit lt). "the second three tyay' tzalyre 23 is adjustable in astepless rnanner. The secoinl three vvay 23 valve has orie inlet tipeiiing receiyingtfoolarit ironi the iadiztttir hyfpass line 9, one ontlet tiperiiitg directing coolant to acondensei' hyfpass line 24 and a third opening Which can he an otatlet opening or aninlet opening. tlloiiseqnentlyf, tlie second three *Way valve 2,3 niay eeeitfe coolant fronithe radiator* bypass line 9 and direct a part of it to the tsorideriser inlett line 22a and a,rern ainirig pztrt of it to the tttiritlteriser bypass line 24. .Ålteriiatii/elyf, the second threetvay valve 23 inay receive cool-ant frorn the radiator otatlet line "ih and direct it to thecondenser bypass line 24. A temperature sensor 25 senses the teniperatiire of thecoolant in the engine outlet line 5, A teiiipfzzratiire sensor 26 senses the ternperature. of the ttoolaiit in the condeiiser irilet line 22a.. lilnring operation, the control unit lt) receiyes suhstantiallyf continnonsly' informationtrorn said teiiiiifziratiire sensors 25., 26 ahont the actual coolant ternperatnres, The control aint lll :tlso receiyes iritforirizttiriit front the second control unit 211 ahoat the C51 ti) eperating eenditieri of the ätit-ER sytiterri. 'the centret uriit li) rnay; for' exarnpte, receiveinferniatien frern the sensor 2t atíteut the actual eendensatieii temperature in theeendenser 18, The eontrol tinit tÛ estiinates a desired tseiíttteiisaition teinperattire ef theworking iriediurrt in the eonderiser ltš. VV hen etttanot is ttsed ytleitfttiiig rrteditinii, aieonderisatiort ternperatiire et' ahent SÛWIÉ is desirahte during mest eperatirtg eenditioiis.The eentrot unit lt) estirnates a required fteW rate and a required ternperature ef theeoelant flow to he direeited te the tseríttteitsei" intet tine 2221 and the eontlenser 18 in :writer te protfitte the ttesirtëtt eendertsatiori ternperattirt: in the tttirideriser tåå, The centret unit lt) iieeeitffifs substztrttiatttyf etintirtittinsty' itriftirirtzttitin ahent the eootarittemperature in the engine euttet line 5. 'the ternperature ef the eeetant in the enginetintlet tiiie 5 iiidieattfs the tteetirig rtëtitiireirierit el' the tteelztrit in the eootirig systern, inease the eoelant has a tee tew teniperatiire the centret unit líš adjusts the three ityayvalve 6 such ithat it ttireets a relatively' snralt first part ef the eootant flow to ithe rattiatorline 7 and a reniairtiiig retativety' large seeend part etthe eeotant ttew te the rartiaterhypass line 9i On the other hand, in tfase the eeetaiit has a high teirtperattirefi the eentrotunit lt) ztdjitsts the three tyay valve 6 sneh it direets a rtetzttiyfiëtyf targe tirst apart ot theeeelant fleytf frem the engine eutlet tine 5 to the radiator line 7 and a remainingretzttivfifttjyf srnatt second part ef the eootarit tion' te the radizttor bypass lirie 9. Titus, theeoelant flott* rate to the radiator line 7 and the eoolant flott' rate to the rattiator ihjyrleaissline 9 :tan be tfariert by the tirfst three t 'ay *tfzttve ti, Furtherrnore, the first part et theeeelant tleyv is eeeted te a teWer temperature in the radiater 8 tliaii the temperature efthe second part ef the eeolant ttew. Censequeiíttlyf, it is possible. te ereate tva/o treelant tlotys ef rtittierertt ternperatures and titan' rates hy ine-ans ef the tirst three Way vatye 6. 'the tirst part of the eeetant ttew Which is eeeted in the radiater 8 is direeted tirerri therattiator entlet tine 7h to the eendenser intet tine 2211. Hotifever, the eeelant in theradizttor tiuttet tinfe Th ttzts ttstiatl y a teo ttivv ternperaftnrfe ter tteetirig the *evort-rintginedinrn in the eendenser it 8 te the desired eendensatien temperature. "the eentret unittt) attj tist the second thrfee tyay vattfe 23 siteh that it d ”eets a part et the warrneeeelarit tflew trein the rartiator' bypass line 9 te the eenrteriser intet tine 22a. in thisease, a niixture otia eotd tseetant tieiiít the radiater line 7 and yyarni eootant frein the iradiater bypass lirie 9 is direeted te the eenrteriser ltš. 'the second three Way' *tfalve 23 ti) “H5 ii) direets the remaining part ef the eeeiant freni the radiater hjytiass iine 9 te thettttiititeiiser hypaiss iine 24. The tttiiititfei iinit it) retteistfes interrriattitiri trern theternperature senser 26 aheut the teinperature ef tiie eeeiant in the eeiidenser iniet iine22a. in ease the ternsperatuie ef the erieiaiit is net the required terriperattirte, the erintrriiunit it? adjusts the first three »tfay valve 6 aiid/er the seeeiid three away isfaiye 23 inorder te change the temperature ef the treeiant in the eendenser iniet line 22a te therequired ternperattire. iaessiiiie ternperatures ef the eeeiant te he direeted te theeendenser 18 are Within a teiiiptïrature raiige having a niiiiirnurn temperature definedhy the teirititëirttiire et" the etieiztrit in the radiatei” euti et Eine fe and a irtatxisrntirnteinrfferattire defined “hy the temperature ef the eeeiant in the radiater iiypass iine 9. Byati_iustiriertt ef the tirst three t 'any *tfaive ti and the seeerid tiiree yvaty tfaiye 23 it ispessihie te give the eeeiant direeted te the eentieiiser 18 an arhitrary' temperaturevvithin this teniperatuire range. in tfase the first three yyay* vaiye 6 tiireets suhstaiitiaiiyfthe entire etieiaiit tirivv rate te the radiater iine 7, it is pessihie te direct a yariahie partef the tteeiant tietv rate in the :radiater eutiet iint? "ih te the tseiititïiiser bypass iine 21-15. inthis case, it is pessiiiie te reduce the eeeiant flety rate efthe iriininiuni temperature te the eentieiiser 18. in erder te eentrei the eeeiing systern, the eentrei unit it) niay estirnate the requiredeeeiing effeet ef the eeeiing systern. in this case, the required eeeiiiig effect is the sunief the retuiireti eeeiiiig effect ef the vverking inediurn in the eendensfzr 18 and therettuireii tteeiirig tätffettt ef the ttttintiiistitin erigirie 2, *Nhtëii the eernhustiriii erigine 2 Piasa iewer temperature than a ftesireti eperating temperature, the eernhustieii engine 2dees net iieed te he eeeied. The temperature ef the eeniiitistien engine is indieated hythe senser 25 sensirtg the ternperature ef the tteeiant in the engine tiutiet iine 5. in thisttase, the rtëttiiiieti eeeiiiig etffeet ef the eeetiiig systern is detineti hy the requiredetieiiiig etifeet ef the uferking, iriediiirn in the eendenser' As a eensequeiiee, theeentrei unit i Û centrets the first three tifay tfaiye (S stieh that it direets a eeeiant fievv'rate te the iadiatei" iine 7 sueh that the eeeiaiit reeeixfes a eeeiing effeet in the radiatei* 8ef the sarne value as the required erieiirig effettt ef tiie weritiiig irteditirn in theeendenser 18. in this case, a therrnai haianee is rnaintained hettweert input and eutput ef therniai energyf in the eeeiing syfsteiii.
C51 ii) 2G 39 11 During eperatiiig eenditiens vvheii cemhustieii engine is te he eeeied, the reqiiiiedeeeling effect ef the eeeling systern is the stim ef the required eeelirig effect ef thevtferhiiig medium in cthe cendenser lS and the required :feeling etieet ef the tternhiistienerigine 2, in this eztse, the tterttriii iinit 1G cenitrrih; the first three tvay tfaive 6 stich thiatit directs a ceelaiit flm/v rate te the iradiater line 7 such that the ceeiant receives aeeeliiig effect in the radiater 8 ef the sarne value as the sum ef the required ceeiingeffect ef the viferkiiig inedium in the cendenserr 18 and the requiiretl cee1iiig effect ef tite itenihtistitini :fiigine 2, Fig 2 siiews an altematisfe einhiitiiriierit ef the erieiirig systeni. hi this ttztstf, a first tfaitfedevice 27 cernprises a eenventienai therniestat 27a vifhich epeiis auteinatiealijyf Wheiithe ceeiant in the en gine eutiet 1ine 5 has a temperature aheve a reguiatirig teinperattirtëef the theiniestat 27a. The first vaive device 27 cenipirise further a therniestat bypassline 271) and a valve 27c eentrehed hy the eentrei unit 1G, The *valve 27e is atiiustahiein a stepiess manner 'hetweeii a clesed pesitirin artd a fuily' epen iiesitieii. iïiirtheirniere,a temperature senser 3G is cenfigiired te sense the teinperatuzre ef the viferhiiig medium in a crindteniser euttet iine 1 ef the XÄftiRnjysteiri.
Diiriiig tipeitfatieni, the centret unit lt) reeeives iriferniati en tfrerni the secen d tterttriill iinit20 ahriut the eiierating eenditien ef the lvVi-iiå systern. The eentrel unit 10 receivesiiiterniaitien frem the senser 21 aheut the aetiial eendensatien temperature in theeendenser 18 and trem the temperature senser šti aheut the teniperatiire ef the civerhingmedium leavfiiig the tseiititïiiser 18. Tiie differeiiee hetvtfeeii the tseiititäiisatieiiterirptärittiire and the teinpteratiire ef the vtfrirkirig m etiiuiii ieatfirig the eerideristfr' 18 isthe siihceeiing ef the Werkiiig inediiini. in erder te achieve a iiigh thernial efficiency'in a XK"1%EiR,-systeiii, the vtfrirkiiig rnieiiiunri in the rtiiiideiiser is te he eeeleti te aeendeiisatien teniperattire ievv as pessiliie and siihstaintialiy vtfitheut stihceeiiiig. 'ilheeentrel unit iii estiinatrfs a desired eendeiisaitien temperature ef the Working nirzdiuin inthe cendensei' 13 Which niay he aheut SNC When ethaiiei is used as tverking niediuni.Furthermore., the eentrel unit iii estiinates a retinirett tlew rate and a retiuiretitemperature ef the ceriiaiit te he tiiireeteti te the cendenser iriiet line lZf/Éa and theeenderiser 18 in erdei' te previde the desired cendensatien temperature in the eerideriser' 18 and a sina1i sutittiiiiiirig ef the vflxtiiiriiig irieiiitini in the itenden ser 18. ti) “H5 2D 12 in case the etielarit in the engine tiutlet line 5 ltas a, lower' terntieratitre thztn theregulating temperature ef the therinestat 27a, the therniestat 27a only direets eeelant tothe radiater h Eirie 9. En rirdtär' te iprevitltë a tteelztrit tlew threngh the radiztter line7, the eentrel unit ell) niay open the Valve 270 and pretfide a cool-ant tlow through thetheriiitistat bypass line 27h. ln this a relatively' sniall lirst part ef the eeelant flowin the engine eutlet liite 5 is direeted to the radiator Eine 7 and a remaining relativelylarge serverat part ef the rseelant lien' is direeted te the radiator bypass line 9. Since. tlie.first part of the eeelarit tlewf is tteeleti in the iradiztter är, it has a lewer teinperzttiire thtah the eoolant ilotv through the radiator bypass line 9.
The first tiart ef the ceeiant fEeW tt/hieh eooled in the ratliator S is direeted froin theiracliatei" eutlet line 7h te the eendensei" inlett line 22A, The eeelant in tlie. radiatei* eutletliite 739 has tisiualiy' a tee lew ternpeiatttre for Cooling the ttferltiitg ineflitini in theeondenser 18 te the desired tttiinleiisatitiii ternperature. Theretoref., the eentrel unit llladjnst the second three Way valve 23 such that it direets a iiart ef the ttfariner eeelantflevv freni the racliator bypass line 9 te the eondensei' intet Eine 2211. in this case, arnixtuie of the eeolaiit lite/v lrein the ratliator etitEet line 7h and apart etlthe eeelanttlewxf froin the rathator ihjyrieass line 9 is tlireetetl to the eondenser' iE 8. The seeend threettfzty valve 23 d* ”eets the reniairiirlg part of the eeelarit trein the radiatei” bytiass little 9 te the eondenser bypass line 24.
The control unit lt) ieeeives iiiterniatitan frem the sensor IZl ahent the actualeendensatiriii ternperature in the eendenser 18 and front the teinperaeture sensor 3Gabout the actual temperature of the vveirhiiig inediuni leaving the eendenser låš. in casethe rseiitleiisaititiii teiiipeirattire anal/ei* the snheeoling ef the vverliiiig inecliurn are not eldesired values; the eentrel nriit l ll adjusts tlte valve 270 'arld/er the seeerrd three ivayValtfe 23 in erder te change the tlew rate and the temperature of the eeolaiit direeted tethe tteniien ser lå sireh that the ttfrirkirig rnetlinnri ohtains the (lesireii eriiiderisatitiii ternperature and the desired sniall stiheooliiig. ti) “H5 2D 13 Pig. 3 shovvs seheinatically a grapli of certain relevant properties of the tirst three tvay*valve 6 used in the coohiig system. The three vway valve 6 etimprises a xfalve iriernhtëi'tvhieli is niovahly arranged vvithiri a rnoveinent range ihetvveeri a tfirst end position anda settoiitl end positiori. The iiiovalile iiietriher of the tiifst tliree safety viatlve o rnfay ditfidethe eoolant flow front the engine ontlet liiie 5 in a first coolant tlovv through theratliator line 9 and a. secoiitl coolant flow through the :radiator hypass line 9. The *valveineinher inay provide art arhitraruv' rnoveni ent such as a rotary inoveiiient or a reetiliiiearinciveinent hetvveen the end positions. ln the first end position, it tlireets no tfoolantllovv ratte to the radizttor line 7 strid in the settond end positi on it iiirettts the eritireeoolant tlovif rate to the radiator bypass line 9. The graiilr depiets the pereentageproportiori of the tlriw rate d *ectetl to the radiator line 7 as a. lfnneti on of the valvemernher distance l) froni the first position. A first ctirve 3l shovvs stieh a function for aconventional three *way *valve ln this case, the tfalve inernher distance D front the .firstend iiositioii is directly" related to the tlrivtf' rate to the radiator line A second graph 32shovvs an einhotliinent of a three Way valve 6 acctirdiiig to the? inventiciiír. Vvïlieii thecoolant has a relatively lovv temperature, the three Way valve 6 is used to flirect a smallcoolant flotv rate to the radiator line 7. ln order to direct a sniall coolant flow rate tothe radiator line 7 vtfith a hi gh accnraeyg the valve rneniliei' has an increased nioveineiitrange for sniall coolant flows to the radiator line 7. "fhis is intlieatetl hy the carve 32,,vvhere a tïirst part 32a irioluding 4G % of the rn overneiit range of the valve iriernher isused to direct eoolant flow rates froin t) to ll) % to the radiator line 7. The reinairiiirg60 % m" the niovtëiiient iaiigtä of the valve rnenihei' i s iised to direct coolant tl ow rateslroin lll to ll) l/a to the radiator line (Éurve 33 indieates a tfarther alternativerelationship hetvveeii the percentage proportioiis of the .flovv rate directetl to the radiatorline 7 as a function ofthe *valve ineinher distance t) trorn the first position. lii this ease,the llovv' rate acctiratty' increases tfoiitinutinsly in direction ttovt/ards the first end positionof the xfztlvft: irienihtëiz The second three vvauf tf-alvi: 23 rnay liave a corresririiiiliiig design as the first three tvay valtfe 6.
The iirveirtion is not restricted to the deserihed enrhodinieiit ihnt may he varied freely xfvithin the stficipe of the ttlainis.

Claims (4)

1. “EÜ 3G 14 Clairns E, A erieiirrg systerrr ler a ivivfiriR-Qfstern in av vehittle (l), vwheireirr tire eeeiirrg systemcenrprises - a ratiiater iine (7) tiireeting a first eeeiant flotv threnglr a radiater (S), - a radiatei" bypass line (9) tiireetirrg a seeend, rreeiant liew iaast the radiater (8), - a tterrrlrërrser iine (22) tiireetiirg eeelant threugli a. eriiitirfirser (l 8) et the XVEiR, systern,~ a erindenser' bypass iine (24) direeting the eeeiant past the eendenser (i S),eharaeterizeti in that the eeelirig systern eernprises ~ a rirst *valve tieviee (e, 27) tferrliggnreti te rerfeive eeeiant trern a eeelant Eine (5) and,direct it te the radizrtrir ii ne (7) strid the rzrrhatrir' bypass line (9), - a radiater etrtlet iine (Th) tiireeting at least a riart ef the tirst eeeiant tiew tirenr theratiiater iine (7) te the cendenser' Eine (232), - a seeeriri vaEve device (23) centigrired te receive treelant trenr the ratiiater bypass Eine(9) and direct it te the ernnieirser line (22) strid the eerrderrser bypass Eine (24), and » a centret rrnit (Eli) eentigrired te centret the tirst vralve ríeviee (6) and the seeendvalve devrice (23) streh that the eeelant direeted te the eentieriser (18) has a ternperatureand a tlevv rate vxfhich results in a ceeEing ei the working iriedirirn in the eenderiser ( E 8) te a riesireli eriiitirarrsavtiriir trërnp,:nature/terrass are at the aetaai eperatirrg etinrhtiriir.
2. A ceeiing systern aceerding te eiairn E, eharaeterized in that the centrel unit (i Ü) iseenfigured te estiniate the. rettnireti eeeling täfieet ei the eeeling sjvfstenr aritE te tttrirtrtritire tirst tfaive ritat/ice (6) such tirat it direets a tteeiairt tievtf rate te the radiater (8) vvhielr results in a eeeiing etieet in the radiater' ef a eerresprrnding size as the required eeeling effect the eeeiing systern.
3. , A erieiirrq svsterrr aeeerdirrtf te eEairrr i er 2 etratrzreterisarëti in tirat the tirst tfaiveb - C27 7 -------------------------------------- -- device is a three tvay vfaive (6).
4. A tfetriing systern atfeertling te eEairn i er 2, tfliaractfzrizeti in that the iirst v/ahfetleviee (27) errirrprisfifs a tirerrrrristat (27a), a, tlnerrnestat bytiass line (27h) arnl a “valts/e (270) eentreiiing the ti rrvv rate tiirengh the thernirrstat bypass line (27 e). S, A ceeEiirg systern aceerdving te any ene of tlie. precedirig clairns, ttharaeterized in thatthe iirst valve device (e) aint/tär' the setternl valve tieviee (23) are tiesigrrrëti te tttirnlriet srnali eeeiarrt tievv rates With a higher aeerrraey' than larger eeelant tlew rates. C51 ”EG 2G St) ti. A cooting syfstein according te any one of the preceding ciainis, characterizeti in that tiie second valve device is a three. vifay *valve (213). 7. Ai cotiiiiig systern according te ariy one ef the preceding ciainis, characterizeri in thatthe controi unit (iii) is configured te receive information frorn a temperature sensor (26) about the temperature of the cooiant tiow in ttiie cendenser intet iine (22:11). A cooiing systern according to anyone of the pieceriiiig ciairns, characterized in thatthe controi unit (iii) is contiignreti to receive inferniatien freni a sensor (li) about the teinperattire or the pressure in the condensrfi* (22 . 9. At cotiiiiig systern according te ariy one ef the preceding ciairns, characterizeri in thatthe controi unit (iii) is configured te receive information frorn a temperature sensor (2 i) about the temperature er the v/orking iriediuin in a. rseiideiiser riutiet iine ( i ha). it). A cooiing systern according to any ene of the piece-flitig ciairns, chairacterized iiithat the contrei unit (i (i) is confignreti to centret the first *vaive device (6, 27) and thesecond vatve device (23) such that the cooiant tiirrzrsteti to the condenser (th) has ateriipiäitfatiire and a. tiow rate vvhiitii results in a itooiiiig of the vvoriring iriednirn. in the condenser (itä) to a condensation pressure just aiiove i har. ii. Cooiing systeni accrirdiiig to any rine of the preceriiiig ciaiins, ttharacterized in that the vvoifiriiig rnediitni in the iitïiiR-syfstern is etharroi, iZ. A coeiing syfsteiii according to any one ef the preceding ciainis, charaeterizeti in tiiat the. cooiiiig systeiii is atso tfeiitigurert to tfeoi a cornbustion engine (2). i3. A ctieiirig systern according to ciairn iIZ, citaracterizeri in that the centret turiit (iii)is contigtireti to receive information froni a temperature sensor (25) sensing the teinperature of the ttooiant in an rängine outiet tine (S) i4. (Éoriiiiig systern according te ariy one ef the preceding ciairns, characterizeri in thatthe vvorking nietiiuiii is heated in an evaporator (14) of the WiHR-systeni hy rneans of exhanst gases front the rseinhustiriii engine (2).
SE1551382A 2015-10-27 2015-10-27 A cooling system for a WHR system SE540931C2 (en)

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SE541554C2 (en) 2017-01-26 2019-10-29 Scania Cv Ab A cooling system for cooling of objects with coolant at three different temperatures and a vehicle comprising such a system
US10570784B2 (en) 2017-09-22 2020-02-25 Tenneco Gmbh Rankine power system for use with exhaust gas aftertreatment system
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