Oxygen sensor, raws li lub npe tawm tswv yim, kev ntsuas rau kev paub txog cov pa oxygen concentration, thiab tawm tswv yim ntawm cov ntaub ntawv rau cov neeg ua haujlwm lossis cov khoom siv. Qee tus neeg yuav tsis paub txog lub tswv yim no, hauv peb lub neej txhua hnub, feem ntau nws yog muab zais, xws li qhov ze ntawm peb lub tsheb sab hauv, qhov tseeb, daim ntawv thov ntawm cov pa roj carbon monoxide yog qhov dav, piv txwv li, hauv cov ntawv luam , Tshuaj nroj tsuag, tshuaj thiab lwm yam. Tom ntej no, kuv yuav tsum qhia koj los ua kom paub cov pa oxygen thiab nws daim ntawv thov nws.
Oxygen sensor yog tus qauv ntawm lub tsheb, nws yog siv cov zauv ntawm cov khoom siv roj ntsuas hauv cov pa roj pa hauv cov pa oxygen, xam los ntawm cov tshuaj sib npaug ntawm oxygen concentration, los saib xyuas thiab tswj cov combustion cua-roj piv rau cov khoom kev nyab xeeb thiab tso pa tawm Kev tshem tawm cov qauv rau kev ntsuas. Cov pa roj carbon dioxide yog siv rau txhua yam ntawm cov roj combustion, roj combustion, roj combustion thiab lwm yam kev tswj cua chaw, nws yog qhov zoo tshaj los ntsuas qhov combustion cua, nrog cov qauv yooj yim, cov lus teb ceev, yooj yim kho, yooj yim siv, yog kev ntsuas Kev siv lub sensor rau kev sib ntsuas ntsuas thiab kev tswj tsis tau tsuas yog tswj thiab txhim kho cov khoom zoo, tab sis kuj ua rau lub voj voog ntau lawm, txuag zog.
Cov ua haujlwm ntawm cov pa oxygen ntawm lub tsheb zoo ib yam li cov roj teeb uas qhuav, thiab cov zirconia hauv cov yeeb yam ua ib yam li cov roj ntsha. Txoj cai ua haujlwm yooj yim yog: hauv qee qhov kev mob, kev siv zirconia sab hauv thiab sab nraum cov pa txawv concentration, ua rau muaj kev sib txawv, thiab qhov ntau dua qhov sib txawv ntawm concentration, qhov ntau dua qhov muaj peev xwm sib txawv. Atmospheric oxygen cov ntsiab lus ntawm 21%, concentrated tov roj combustion yog tsis muaj oxygen, dilute mixed mixed generated tom qab kev sib tsoo ntawm cov pa nkev lossis emissions vim tsis muaj oxygen muaj ntau cov pa, tab sis tseem ntau tshaj qhov chaw Oxygen tsawg dua. Nyob rau hauv lub catalysis ntawm high kub thiab platinum, negatively charged oxygen ions yog adsorbed on puab thiab sab qhov chaw ntawm zirconia casing. Raws li oxygen nyob rau hauv cov cua tshaj lub pa roj hauv cov pa, qhov casing rau tib sab ntawm huab cua tshaj li lub sab sab ntawm qhov adsorption ntawm cov ions tsis ntau, qhov concentration ntawm ions ntawm ob sab ntawm lub cim ntawm lub zog ntawm electromotive.
Thaum cov pa oxygen concentration nyob rau sab ntawm lub tsheb qias neeg siv pa roj tsawg, lub siab voltage (0.6 mus rau 1 V) yog tsim los ntawm cov pa oxygen sensor electrodes, thiab qhov hluav taws xob teeb liab raug xa mus rau lub tsheb ECU rau kev sib tw. Lub ECU regards cov teeb liab high voltage raws li tus nplua nuj sib xyaw, Thiab lub teeb liab tsis tshua muaj teeb meem raws li kev sib tov sib xyaw. Raws li oxygen sensor voltage teeb liab, lub computer raws li ze li sai tau rau qhov theoretical zoo tshaj plaws cua-roj piv ntawm 14.7: 1 mus rau dilute los yog thicken qhov sib tov. Yog li cov pa oxygen yog tus yawm sensor rau hluav taws xob tswj ntsuas roj. Oxygen sensor hauv siab (kawg rau 300 ° C saum toj no) nws cov yam ntxwv yuav qoos reflected thiaj li tso tawm qhov hluav taws xob. Nws reacts rau sib tov ntawm li 800 ° C ceev tshaj, thiab thaum tsis muaj peevxwm nws yuav hloov ntau heev.
Oxygen sensors yog dav siv hauv roj av, tshuaj lom neeg, thee, metallurgy, ntawv, hluav taws, kiag, tshuaj, automotive, roj emissions xyuas thiab lwm yam lag luam.
Tom qab cov lus piav qhia saum toj no, txawm tias koj muaj kev nkag siab ntau ntawm cov pa oxygen? Raws li kuv tus kheej kev paub ntawm kev paub tsuas yog muab rau koj nrog cov ntaub ntawv ntau, thiab tej zaum tsis zoo tag nrho, tab sis cia siab tias cov no tsuas Tus kheej cov ntaub ntawv yuav pab tau txhua tus. Tsis muaj ib qho uas hais tias: "ua neej nyob kawm", paub kev tsis paub, tab sis kuv xav tias nyob hauv peb sab, thiab peb muaj kev sib raug zoo nrog kev paub txog ntawm cov khoom yuav tsum muaj kev nkag siab ntawm lawv.