Lub neej ua haujlwm ntev rau kev ua kom txias

Nws nyuaj rau ntseeg, tab sis tsuas yog 34 feem pua. lub zog tau los ntawm kev sib xyaw ntawm cov roj-cua sib tov yog hloov mus rau hauv lub zog muaj txiaj ntsig, piv txwv li txhua lub zog. Daim duab no qhia tau hais tias, ntawm ib sab, qhov ua tau zoo ntawm lub cav nruab nrab ntawm lub tsheb tsawg npaum li cas, thiab ntawm qhov tod tes, siv zog npaum li cas rau kev tsim hluav taws xob. Cov tom kawg yuav tsum tau tawg sai sai txhawm rau tiv thaiv overheating thiab yog li jamming lub cav.

Glycol dej

Rau kev ua kom txias ntawm lub tsheb cav, nws yog ib qho tsim nyog yuav tsum tau siv qhov zoo tshaj plaws uas tuaj yeem nqus tau zoo thiab tom qab ntawd tshem tawm cov thermal ntau dhau mus rau sab nraud. Nws tsis tuaj yeem yog, piv txwv li, dej, vim nws cov khoom (nws khov ntawm 0 ° C thiab boils ntawm 100 ° C), nws tsis muaj txiaj ntsig tshem tawm cov cua sov ntau dhau ntawm lub cev. Yog li ntawd, automotive cua txias tshuab siv 50/50 sib tov dej thiab monoethylene glycol. Xws li kev sib tov yog tus yam ntxwv los ntawm qhov chaw khov ntawm -37 ° C thiab kub kub ntawm 108 ° C. Ib qho yuam kev yog siv ib qho glycol. Vim li cas? Nws hloov tawm hais tias tom qab ntawd qhov ua tau zoo ntawm kev tshem tawm cov cua sov tsis zoo, dhau li ntawd, undiluted glycol freezes ntawm qhov kub ntawm -13 degrees C. Yog li ntawd, kev siv cov ntshiab glycol tuaj yeem ua rau lub cav overheat, uas tuaj yeem ua rau qaug dab peg. . Rau cov txiaj ntsig zoo tshaj plaws, sib tov glycol nrog dej distilled hauv qhov sib piv 1: 1.

Nrog corrosion inhibitors

Cov kws kho mob tshwj xeeb saib xyuas qhov purity ntawm cov khoom siv kom txias lub cav. Ua ntej tshaj plaws, peb tab tom tham txog qhov purity ntawm glycol. Kev siv tom kawg ntawm qhov tsis zoo ua rau muaj kev tsim ntawm foci ntawm corrosion nyob rau hauv lub txias system (vim yog tsim ntawm acidic compounds). Qhov tseem ceeb tshaj plaws nyob rau hauv qhov zoo ntawm glycol yog lub xub ntiag ntawm thiaj li hu ua corrosion inhibitors. Lawv lub luag haujlwm tseem ceeb yog los tiv thaiv cov cua txias los ntawm ob qho tib si corrosion thiab tsim cov deposits txaus ntshai. Corrosion inhibitors kuj tiv thaiv lub coolant los ntawm kev laus ntxov ntxov. Yuav ua li cas hloov lub coolant nyob rau hauv lub tsheb radiators? Nws tag nrho yog nyob ntawm cov chaw tsim khoom thiab cov khoom siv ntxiv hauv lawv - classic lossis organic.

Ob mus rau rau xyoo

Qhov yooj yim tshaj plaws coolants muaj classic additives xws li silicates, phosphates los yog borates. Lawv qhov tsis zoo yog qhov txo qis ntawm cov khoom tiv thaiv sai thiab tsim cov deposits hauv lub cev. Rau cov kua dej no, nws raug pom zoo kom hloov txawm tias txhua ob xyoos. Qhov xwm txheej sib txawv nrog cov kua dej uas muaj cov organic tebchaw (hu ua carboxylic compounds), los yog cov kua dej ua lub neej ntev. Lawv qhov kev txiav txim yog ua raws li cov nyhuv catalytic. Cov tebchaw no tsis cuam tshuam nrog cov hlau, tab sis tsuas yog kho nws. Vim li no, lawv tuaj yeem tiv thaiv tau zoo dua los ntawm kev tsim cov chaw corrosion. Nyob rau hauv cov ntaub ntawv ntawm cov kua nrog ib tug ntev kev pab cuam lub neej, lawv cov kev pab cuam lub neej yog txhais raws li txawm rau xyoo, los yog hais txog 250 txhiab. km khiav.

Kev tiv thaiv thiab nruab nrab

Qhov zoo tshaj plaws coolants nrog cov organic carbon tebchaw tsis tsuas yog tiv thaiv lub system los ntawm kev pheej hmoo ntawm corrosion, tab sis kuj tiv thaiv cov tsim ntawm txaus ntshai deposits uas cuam tshuam rau cov txheej txheem txias. Cov kua dej no kuj ua tau zoo neutralize acidic pa gases uas tuaj yeem nkag mus rau hauv qhov cua txias los ntawm lub combustion chamber. Nyob rau tib lub sijhawm, uas tseem ceeb heev, lawv tsis hnov ​​​​mob nrog cov yas thiab elastomers siv hauv cov tshuab cua txias ntawm cov tsheb niaj hnub. Cov kua dej nrog cov organic additives yog qhov zoo dua ntawm kev tiv thaiv kev pheej hmoo ntawm lub cav overheating dua li lawv cov ntxhia counterparts, thiab yog li ntawd lawv tau nce ntxiv tom kawg.