Olunye ulwazi malunga nemoto ye-O2 sensor

Inzwa yemoto ye-O2 yinzwa yempendulo ephambili kwinkqubo yokulawula injini ye-injini yamafutha.Yinxalenye ephambili yokulawula ukukhutshelwa kombhobho wemoto, ukunciphisa ukungcoliseka kwemoto kokusingqongileyo, kunye nokuphucula umgangatho wokutsha kwamafutha kwiinjini zemoto.I-sensor ye-O2 ifakwe kumbhobho wokukhupha injini.Okulandelayo, ndiza kwazisa ulwazi malunga nemoto ye-O2 sensor.

Isishwankathelo

I-Automobile O2 sensor isixhobo sokubona i-sensor enokulinganisa i-oxygen concentration esetyenziswe emotweni, kwaye ngoku ibe ngumgangatho wemoto.I-sensor ye-O2 ifumaneka ikakhulu kumbhobho wokukhupha we-injini yemoto.Licandelo elibalulekileyo lezivamvo kwinkqubo yolawulo lwe-injini ye-injini yamafutha.Ikwayinxalenye ephambili yokulawula ukukhutshwa kombhobho wemoto, ukunciphisa ukungcoliseka kwemoto kokusingqongileyo, kunye nokuphucula umgangatho wokutsha kwe-injini yemoto.

Inani

Ngokubanzi, kukho izinzwa ezimbini ze-O2 emotweni, i-O2 yangaphambili kunye ne-O2 yangasemva.I-sensor ye-O2 yangaphambili ifakwe ngokubanzi kwi-exhaust manifold phambi kwe-converter ye-catalytic yeendlela ezintathu kwaye inoxanduva lokulungiswa komxube.I-sensor ye-O2 yangasemva ifakwe kumbhobho wokukhupha ngasemva kwi-converter ye-catalytic yeendlela ezintathu kwaye isetyenziselwa ukukhangela umphumo osebenzayo we-converter catalytic converter.

Umgaqo　

Okwangoku, iisensom eziphambili ze-O2 ezisetyenziswa kwiimoto ziquka i-zirconium dioxide O2 sensors, i-titanium dioxide i-O2 sensors kunye ne-wide-area ye-O2 sensors.Phakathi kwabo, eyona nto isetyenziswa kakhulu yi-zirconium dioxide O2 sensor.Oku kulandelayo kusebenzisa i-zirconium dioxide O2 inzwa njengomzekelo ukukwazisa kumgaqo we-automobile O2 sensor.

I-zirconium dioxide i-O2 inzwa yenziwe ityhubhu ye-zirconium (into yokuva), i-electrode kunye nomkhono wokukhusela.I-tube ye-zirconium yinto eqinile ye-electrolyte eyenziwe nge-zirconium dioxide (ZrO2) equkethe inani elincinci le-yttrium.Amacala angaphakathi nangaphandle kwi-tube ye-zirconium afakwe ngoluhlu lwe-electrodes ye-membrane ye-platinum e-porous.Ngaphakathi ityhubhu ye-zirconium ivulekele emoyeni, kwaye ngaphandle idibene negesi yokukhupha.

Ngamagama alula, ii-automotive sensors ze-O2 zenziwa ikakhulu nge-zirconia ceramics kunye neplatinum encinci kwindawo yangaphakathi nangaphandle.Indawo yangaphakathi igcwele i-oxygen-rich ngaphandle emoyeni, kwaye indawo yangaphandle ibonakaliswe kwi-gas exhaust.Inzwa ixhotyiswe ngesekethe yokufudumeza.Emva kokuba imoto iqaliswe, isiphaluka sokufudumala sinokufikelela ngokukhawuleza kwi-350 ° C efunekayo ekusebenzeni okuqhelekileyo.Ke ngoko, inzwa yemoto ye-O2 ikwabizwa ngokuba yinzwa ye-O2 eshushu.

Isivamvo se-O2 ikakhulu sisebenzisa izinto ezibuthathaka ze-ceramic ukulinganisa amandla e-O2 kumbhobho wokukhupha wemoto, kwaye ibala i-concentration ye-O2 ehambelanayo ngomgaqo wokulinganisela kweekhemikhali, ukwenzela ukuba umlinganiselo wokutsha we-air-fuel unokubekwa esweni kwaye ulawulwe.Emva kokubeka iliso kumlinganiselo wamafutha omoya otyebileyo kunye nomqondiso obhityileyo wegesi exubeneyo, umqondiso ufaka igalelo kwi-ECU yemoto, kwaye i-ECU ihlengahlengisa isixa sokutofa kwe-injini ngokuhambelana nomqondiso wokuphumeza ulawulo oluvaliweyo, ukuze i-catalytic converter inokwenza ngcono umsebenzi wayo wokucoca, kwaye ekugqibeleni iqinisekise ukukhutshwa okusebenzayo kokukhupha.

Ngokukodwa, umgaqo wokusebenza we-O2 ye-automobile sensor ufana nebhetri eyomileyo, kwaye i-zirconium oxide element kwi-sensor yenza njenge-electrolyte.Ngaphantsi kweemeko ezithile, ukuhlukana kwe-O2 yoxinaniso phakathi kwamacala angaphakathi nangaphandle e-zirconia angasetyenziselwa ukuvelisa ukuhluka okunokuthi kwenzeke, kwaye ubuninzi bokubaluleka koxinzelelo, ubukhulu becala.Ngaphantsi kwe-catalysis yobushushu obuphezulu kunye neplatinam, i-O2 i-ionized.Ngenxa yoxinaniso oluphezulu lwe-O2 ion ngaphakathi kwi-tube ye-zirconium kunye nokuxinwa okuphantsi kwe-O2 ion ngaphandle, phantsi kwesenzo se-O2 umahluko woxinaniso, i-oxygen ion iyahlukana ukusuka kwi-atmospheric ukuya kwicala lokukhupha, kunye nokuxinwa kwee-ion kumacala omabini. Umahluko uvelisa amandla e-electromotive, ngokwenza njalo ibhetri inomahluko kwi-O2 yoxinaniso.

Ngaba uyazi ngakumbi malunga ne-O2 sensor yemoto?Ukuba ufuna ukuthengisa i-O2 sensor, wamkelekile ukuba uqhagamshelane nathi!

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