Inzwa ye-post-oxygen

Namuhla, izimoto zifakwe izinzwa ezimbili ze-oxygen, eyodwa ingaphambi kwe-catalyst yezindlela ezintathu enye ngemuva kwayo. Umsebenzi wangaphambili uwukuthola isilinganiso se-air-fuel yenjini ngaphansi kwezimo zokusebenza ezihlukene, futhi ngesikhathi esifanayo, ikhompyutha ilungisa inani lomjovo kaphethiloli futhi ibala isikhathi sokuthungela ngokwalesi siginali. Ingemuva iwukuhlola umsebenzi wokuguqula izindlela ezintathu! Okungukuthi izinga lokuguqulwa kwe-catalyst. Kuyisisekelo esibalulekile sokuhlola ukuthi ingabe i-catalyst yezindlela ezintathu isebenza ngokujwayelekile (enhle noma embi) ngokuqhathanisa nedatha yenzwa ye-oxygen yangaphambili.

isingeniso sokuqamba

Inzwa ye-oxygen isebenzisa isimiso se-Nernst.

Isici sawo esiyinhloko yishubhu le-ceramic le-ZrO2 elinezimbobo, eliyi-electrolyte eqinile, futhi izinhlangothi zayo ezimbili zifakwe ama-electrode angenazimbobo ze-Pt. Ezingeni elithile lokushisa, ngenxa yokugcwala okuhlukene komoyampilo ezinhlangothini zombili, amangqamuzana omoya-mpilo ohlangothini lokugxila okuphezulu (ngaphakathi kweshubhu le-ceramic) akhangiswa ku-electrode yeplatinamu futhi ahlanganiswe nama-electron (4e) ukuze akhe ama-ion omoya-mpilo O2- , okwenza i-electrode ishajwe kahle, futhi ama-O2- ion athuthele ohlangothini lwe-oxygen ephansi (i-exhaust gas side) ngokusebenzisa izikhala ze-ion ye-oxygen ku-electrolyte, okwenza i-electrode ishajwe kabi, okungukuthi, umehluko ongase ube khona uyakhiqizwa.

Uma isilinganiso se-air-fuel siphansi (ingxube ecebile), kuba ne-oksijini encane kugesi ephumayo, ngakho-ke kukhona ama-ion oksijini ambalwa ngaphandle kweshubhu le-ceramic, okwenza amandla e-electromotive angaba ngu-1.0V;

Uma isilinganiso sikaphethiloli womoya silingana no-14.7, amandla e-electromotive akhiqizwa ezinhlangothini zangaphakathi nangaphandle zeshubhu le-ceramic ngu-0.4V~0.5V, okungamandla e-electromotive eyireferensi;

Uma isilinganiso sikaphethiloli womoya siphezulu (ingxube engenawo amandla), okuqukethwe komoyampilo egesini yokukhipha umoya kuphezulu, futhi umehluko wokuhlushwa wama-ion omoya-mpilo ngaphakathi nangaphandle kweshubhu le-ceramic mncane, ngakho amandla e-electromotive aphansi kakhulu futhi asondele ku-zero. .

Inzwa ye-oxygen eshisayo:

-Inzwa ye-oxygen eshisayo inokumelana nokuhola okuqinile;

-Incike kancane ekushiseni kwe-exhaust, futhi ingasebenza njengokujwayelekile ngaphansi komthwalo ophansi kanye nezinga lokushisa eliphansi lokukhipha umoya;

-Faka ngokushesha isilawuli se-loop evaliwe ngemuva kokuqala.