isimiso sokusebenza

I-1.Inzwa ye-oxygen iwukucushwa okujwayelekile ezimotweni. Isici sokulinganisa esisebenzisa izakhi ze-ceramic ezizwelayo ukukala amandla komoya-mpilo kumapayipi okukhipha umoya wemoto, futhi ibala ukugcwala komoyampilo okuhambisanayo ngokomgomo webhalansi yamakhemikhali, ukuze kuqashwe futhi kulawule isilinganiso sokushiswa komoya-mafutha kanye nokuqinisekisa umkhiqizo. ikhwalithi nokukhipha umoya ukuze kuhlangatshezwane namazinga. Inzwa ye-oxygen isetshenziswa kabanzi ekulawuleni umkhathi wokushiswa kwamalahle okuhlukahlukene, ukushiswa kukawoyela, ukushiswa kwegesi nezinye iziko. Kuyindlela engcono kakhulu yokulinganisa umkhathi wokushiswa kwamanje, futhi inezinzuzo zesakhiwo esilula, impendulo esheshayo, ukugcinwa okulula, ukusetshenziswa okulula kanye nesilinganiso esinembile. Ukusebenzisa le nzwa ukulinganisa nokulawula umoya wokuvutha akukwazi nje ukuzinza nokuthuthukisa ikhwalithi yomkhiqizo, kodwa futhi kufinyeze umjikelezo wokukhiqiza nokonga amandla.

2.Isimiso sokusebenza senzwa ye-oxygen emotweni sifana nebhethri elomile, futhi isici se-zirconia senzwa sisebenza njenge-electrolyte. Umgomo wayo oyisisekelo wokusebenza uthi: ngaphansi kwezimo ezithile, umehluko ongaba khona ukhiqizwa ngokusebenzisa umehluko wokuhlushwa komoya-mpilo phakathi kwangaphakathi nangaphandle kwe-zirconia, futhi uma umehluko omkhulu wokugxila, umehluko omkhulu ongaba khona. Okuqukethwe komoyampilo osemkhathini kungamaphesenti angama-21, futhi igesi yokukhipha umoya ngemva kokushiswa kwengxube ecebile empeleni ayinawo umoya-mpilo. Igesi yokukhipha umoya ngemva kokushiswa kwengxube engenawo amandla noma igesi yokukhipha umoya ngenxa yokuntuleka komlilo iqukethe umoya-mpilo omningi, kodwa isencane kakhulu kunomoya-mpilo osemkhathini. Ngaphansi kwe-catalysis ye-platinum ekushiseni okuphezulu, ama-ion oksijini akhokhiswa kabi akhangisiwe endaweni engaphakathi nangaphandle yomkhono we-zirconia. Ngenxa yokuthi kunomoya-mpilo omningi emkhathini kunasegesi yokukhipha umoya, uhlangothi oluxhumana nomkhathi ku-casing lumunca ama-ion amaningi angemahle kunalawo asohlangothini lwegesi yokukhipha umoya, futhi umehluko wokugxila wama-ion ezinhlangothini zombili ukhiqiza amandla e-electromotive.

3.Lapho ukugxiliswa komoyampilo ohlangothini lwegesi ekhishwayo yebhokisi lemoto liphansi, i-voltage ephezulu (0.6 ~ 1V) ikhiqizwa phakathi kwama-electrode wenzwa ye-oxygen, futhi lesi signali yamandla kagesi ithunyelwa ku-ECU yemoto ukuze ikhulise. I-ECU ibheka isignali yamandla kagesi aphezulu njengengxube ecebile kanye nesignali yamandla kagesi aphansi njengengxube engenamandla. Ngokusho kwesignali ye-voltage yenzwa ye-oxygen, ikhompuyutha ihlanza noma inothisa ingxube ngokuvumelana ne-theoretical optimal air-fuel ratio eduze ngangokunokwenzeka ku-14.7: 1. Ngakho-ke, inzwa ye-oxygen iyinzwa eyinhloko yokulawula ukulinganisa uphethiloli nge-elekthronikhi. Kuphela uma inzwa ye-oxygen isezingeni lokushisa eliphezulu (ukuphela kufinyelela ngaphezu kuka-300 ° C) lapho izici zayo zingabonakala ngokugcwele futhi i-voltage ingaphuma. Cishe ku-800 ° C, inempendulo esheshayo ekushintsheni kwengxube, kodwa lesi sici sizoshintsha kakhulu ekushiseni okuphansi.