ceev ntawm antifreeze. Nws cuam tshuam li cas rau qhov chaw khov?
Txheem
Qhov ntom ntawm antifreeze
Yuav luag tag nrho cov tshuaj tiv thaiv niaj hnub no yog tsim los ntawm cawv (ib qho ntawm cov kev hloov pauv ntawm glycol) thiab dej distilled. Qhov piv ntawm glycol rau dej txiav txim siab qhov tsis kam mus rau qhov kub thiab txias.
Muaj ib qho paradox ntawm no uas tseem ceeb kom nkag siab. Rau ethylene glycol antifreezes, txoj cai tsis ua hauj lwm: qhov siab dua qhov concentration ntawm glycol, ntau Frost qhov sib tov tuaj yeem zam. Ntshiab ethylene glycol muaj qhov khov ntawm -13 ° C. Thiab xws li ib tug siab khov qhov pib ntawm lub coolant yog tiav los ntawm kev sib tov nrog dej.
Txog rau qhov concentration ntawm glycol nyob rau hauv muaj pes tsawg leeg ntawm kwv yees li 67%, kev txhim kho nyob rau hauv qis-kub zog tshwm sim. Nrog rau qhov piv txwv no, qhov siab tshaj plaws tiv thaiv kom khov yog tiav. Tom ntej no los maj mam hloov ntawm lub ncuav taw tes rau qhov zoo kub. Muaj cov lus piav qhia txog cov khoom ntawm ntau qhov ntau ntawm glycols thiab dej.
Qhov ntom ntawm antifreeze tsis nyob ntawm nws cov xim. Nrog rau qhov chaw khov. Nws tsis muaj teeb meem yog tias peb kawm qhov ntom ntawm cov tshuaj tiv thaiv ntsuab ntsuab, daj lossis liab, qhov txiaj ntsig tshwm sim yuav tsis cuam tshuam nrog xim. Cov xim theej txiav txim siab qhov muaj pes tsawg leeg ntawm cov additives thiab qhov kev siv ntawm antifreeze rau ntau lub tsheb. Txawm li cas los xij, tam sim no muaj qee qhov tsis meej pem hauv qhov system no. Yog li ntawd, nws yog tsis yooj yim sua kom tsom mus rau cov xim nkaus xwb.
Tam sim no, cov tshuaj tiv thaiv nrov tshaj plaws yog: G11, G12, G12 +, G12 ++ thiab G13. Rau tag nrho cov coolants, qhov ceev nws txawv nyob ntawm seb lub pour point (glycol concentration). Rau feem ntau niaj hnub coolants, daim duab no yog nyob ib ncig ntawm 1,070-1,072 g / cmXNUMX3, uas kwv yees sib haum mus rau qhov chaw khov ntawm -40 ° C. Ntawd yog, antifreeze hnyav dua dej.
Cov cuab yeej ntsuas qhov ntom ntom ntawm cov tshuaj tiv thaiv
Qhov ntom ntawm antifreeze tuaj yeem ntsuas nrog cov pa hydrometer. Qhov no yog cov cuab yeej tsim nyog tshaj plaws. Koj tsuas yog yuav tsum nrhiav ib lub qauv ntawm hydrometer, tsim los ntsuas qhov ntom ntawm glycol sib tov.
Lub hydrometer muaj ob qhov tseem ceeb:
- flasks (nrog rau lub taub roj hmab ntawm ib sab thiab ib lub pear rau lwm qhov) rau kev noj tshuaj tiv thaiv kab mob hauv;
- ntab nrog nplai.
Nyob rau hauv lub hydrometer, uas yog ncaj qha tsim los ntsuas qhov ceev ntawm antifreeze, feem ntau yog ib tug hint insert. Tsis tsuas yog qhov ceev yog cim rau ntawm nws, tab sis kuj muaj qhov concentration ntawm glycol coj mus rau nws. Qee qhov, hloov kho dua tshiab, tam sim ntawd muab cov ntaub ntawv ntawm qhov chaw khov ntawm cov tshuaj tiv thaiv kab mob hauv qab kawm. Qhov no tshem tawm qhov xav tau ntawm nws tus kheej tshawb nrhiav qhov tseem ceeb hauv lub rooj thiab ua rau cov txheej txheem nws tus kheej sai dua thiab yooj yim dua.
Yuav ntsuas qhov ntom ntawm antifreeze hauv tsev li cas?
Cov txheej txheem rau kev ntsuas nrog hydrometer yog qhov yooj yim heev. Nws yog ib qho tsim nyog yuav tau kos cov tshuaj tiv thaiv kom txaus rau hauv lub khob los ntawm lub kaus poom lossis ncaj qha los ntawm lub tshuab cua txias kom ntab lub ntab. Tom ntej no, saib lub ntab. Qib uas nws tog yuav qhia qhov ceev. Tom qab ntsuas, nws yog txaus los piv qhov ceev nrog cov concentration ntawm ethylene glycol, sib haum mus rau qhov ceev no, los yog nrog lub ncuav point.
Muaj lwm txoj hauv kev los ntsuas qhov ntom ntom hauv tsev. Qhov no yuav xav tau cov nplais kom raug (koj tuaj yeem siv cov nplais hauv chav ua noj) thiab ib lub thawv nrog ntim raws nraim 1 liter. Cov txheej txheem ntsuas qhov ntom ntom hauv qhov no yuav muaj cov kauj ruam hauv qab no:
- peb hnyav lub thawv khoob thiab sau cov txiaj ntsig;
- ncuav 1 liter ntawm antifreeze rau hauv lub thawv no thiab nqa tawm ib qho ntxiv hnyav;
- rho tawm qhov hnyav ntawm qhov hnyav tag nrho thiab tau txais ib qho net ntawm 1 liter ntawm antifreeze;
Qhov no yuav yog qhov ntom ntawm antifreeze. Cov txheej txheem tuaj yeem thov qhov tseeb tsuas yog tias cov nplai tau lees paub los qhia qhov tseeb qhov hnyav, thiab lub thawv tuav tau raws nraim 1 liter ntawm kua.
