umgaqo wokusebenza

I-1.Inzwa ye-oksijeni yinkqubo eqhelekileyo kwiimoto. Yinto yokulinganisa esebenzisa izinto ze-ceramic ezibuthathaka ukulinganisa amandla eoksijini kwimibhobho yokukhupha inqwelo-mafutha, kwaye ibala ugxininiso lweoksijini oluhambelanayo ngokomgaqo wolungelelwaniso lwekhemikhali, ukuze kubekwe iliso nokulawula umlinganiselo wokutsha komoya-mafutha kunye nokuqinisekisa imveliso. umgangatho kunye nokukhutshwa kwe-exhaust ukuhlangabezana nemigangatho. Inzwa yeoksijini isetyenziswa ngokubanzi kwi-atmosphere yolawulo lokutsha kwamalahle ahlukeneyo, ukutsha kweoyile, ukutsha kwegesi kunye nezinye iziko. Yeyona ndlela yokulinganisa umoya wokutsha okwangoku, kwaye ineenzuzo zesakhiwo esilula, ukuphendula ngokukhawuleza, ukugcinwa lula, ukusetyenziswa ngokufanelekileyo kunye nokulinganisa ngokuchanekileyo. Ukusebenzisa le nzwa yokulinganisa kunye nokulawula umoya wokutsha awukwazi nje ukuzinza nokuphucula umgangatho wemveliso, kodwa nokunciphisa umjikelo wemveliso kunye nokugcina amandla.

2.Umgaqo osebenzayo we-oxygen sensor kwimoto ufana nebhetri eyomileyo, kwaye i-zirconia element kwi-sensor yenza njenge-electrolyte. Umgaqo wayo osisiseko wokusebenza kukuba: phantsi kweemeko ezithile, ukungafani okunokwenzeka kuveliswa ngokusebenzisa ukuhlukana kwe-oksijini yoxinaniso phakathi kwangaphakathi nangaphandle kwe-zirconia, kwaye ubukhulu becala umehluko wokuxininisa, mkhulu umehluko okhoyo. Umxholo weoksijini emoyeni yi-21%, kwaye igesi yokukhupha emva kokutshiswa komxube ocebileyo ayinayo i-oxygen. Irhasi ephumayo emva kokutshiswa komxube obhityileyo okanye igesi yokuphuma ngenxa yokungabikho komlilo iqulethe ioksijini eninzi, kodwa isengaphantsi kakhulu kuneoksijini esemoyeni. Ngaphantsi kwe-catalysis ye-platinum kwiqondo lokushisa eliphezulu, i-ion ye-oxygen ehlawuliswa kakubi ibhengezwa kwiindawo zangaphakathi nangaphandle ze-zirconia sleeve. Kuba kukho ioksijini eninzi esibhakabhakeni kunegesi ephumayo, icala elinxibelelana nomoya osemoyeni kwi-casing lifunxa ii-ion ezingalunganga kunezo zikwicala legesi ephumayo, kwaye umahluko wokuxinana kwee-ion kumacala omabini uvelisa amandla ombane.

3.Xa ugxininiso lwe-oksijini kwicala lokukhutshwa kwegesi ye-casing ye-automobile casing, i-voltage ephezulu (0.6 ~ 1V) yenziwa phakathi kwe-electrodes ye-sensor ye-oxygen, kwaye lo mqondiso we-voltage uthunyelwa kwi-ECU yemoto ukuze ikhulise. I-ECU ithatha umqondiso wombane ophezulu njengomxube otyebileyo kunye nesignali yamandla ombane aphantsi njengomxube obhityileyo. Ngokomqondiso we-voltage ye-oxygen sensor, ikhompyutha iyancipha okanye ityebise umxube ngokwethiyori efanelekileyo ye-air-fuel ratio ngokusondeleyo kangangoko kunokwenzeka kwi-14.7: 1. Ngoko ke, inzwa ye-oxygen yinzwa engundoqo yokulawula i-fuel metering. Kuphela xa i-sensor ye-oksijeni ikwiqondo lokushisa eliphezulu (isiphelo sifikelela ngaphezu kwe-300 ° C) iimpawu zayo zingabonakaliswa ngokupheleleyo kwaye i-voltage inokukhutshwa. Ngokumalunga ne-800 ° C, inempendulo ekhawulezayo ekutshintsheni umxube, kodwa olu phawu luya kutshintsha kakhulu kwiqondo lokushisa eliphantsi.