mfundo ya ntchito

1.Oxygen sensor ndi kasinthidwe kokhazikika mu magalimoto.Ndi chinthu choyezera chomwe chimagwiritsa ntchito zinthu za ceramic tcheru kuyeza mphamvu ya okosijeni m'mapaipi othamangitsa magalimoto, ndikuwerengera kuchuluka kwa okosijeni molingana ndi mfundo yamankhwala oyenera, kuti azitha kuyang'anira ndikuwongolera chiwopsezo chamafuta amafuta ndikuwonetsetsa kuti chinthucho. khalidwe ndi utsi utsi kuti akwaniritse miyezo.Mpweya wa okosijeni umagwiritsidwa ntchito kwambiri m'mlengalenga kuwongolera mitundu yosiyanasiyana ya malasha, kuyaka kwamafuta, kuyaka kwa gasi ndi ng'anjo zina.Ndi njira yabwino kwambiri yoyezera mpweya woyaka pakali pano, ndipo ili ndi ubwino wa kapangidwe kosavuta, kuyankha mofulumira, kukonza kosavuta, kugwiritsa ntchito bwino ndi kuyeza kolondola.Kugwiritsa ntchito sensa iyi kuyeza ndi kuwongolera mpweya woyaka sikungakhazikike ndikuwongolera mtundu wazinthu, komanso kufupikitsa kuzungulira kwa kupanga ndikupulumutsa mphamvu.

2.Njira yogwiritsira ntchito mpweya wa okosijeni m'galimoto ndi yofanana ndi ya batri youma, ndipo chinthu cha zirconia mu sensa chimachita ngati electrolyte.Mfundo yake yaikulu yogwirira ntchito ndi: pansi pazifukwa zina, kusiyana komwe kungathe kuchitika kumapangidwa pogwiritsa ntchito kusiyana kwa mpweya wa okosijeni pakati pa mkati ndi kunja kwa zirconia, ndipo kusiyana kwakukulu kwa ndende, kumapangitsa kusiyana kwakukulu.Mpweya wa okosijeni mumlengalenga ndi 21%, ndipo mpweya wotuluka pambuyo pa kuyaka kosakanikirana kosakanikirana mulibe mpweya.Mpweya wotulutsa mpweya pambuyo pa kuyaka kosakanikirana kosakanikirana kapena mpweya wotuluka chifukwa chosowa moto uli ndi mpweya wochulukirapo, komabe umakhala wocheperako kuposa mpweya wa mumlengalenga.Pansi pa catalysis wa platinamu pa kutentha kwambiri, ayoni mpweya zoipa mlandu ndi adsorbed pa mkati ndi kunja kalikonse za zirconia sleeve.Chifukwa chakuti mumlengalenga muli mpweya wochuluka kuposa mpweya wotulutsa mpweya, mbali yomwe imalankhulana ndi mlengalenga pa casing imatenga ma ion oipa kwambiri kuposa mbali ya mpweya wotuluka, ndipo kusiyana kwa ma ion kumbali zonse ziwiri kumatulutsa mphamvu ya electromotive.

3.Pamene mpweya wa okosijeni kumbali ya mpweya wotulutsa mpweya wa galimotoyo uli wochepa, mphamvu yaikulu (0.6 ~ 1V) imapangidwa pakati pa ma electrode a sensa ya okosijeni, ndipo chizindikiro ichi chimatumizidwa ku ECU yamagalimoto kuti ikule.ECU imawona ma siginecha apamwamba ngati osakaniza olemera komanso siginecha yotsika yamagetsi ngati chisakanizo chowonda.Malingana ndi mphamvu yamagetsi yamagetsi a mpweya wa okosijeni, makompyuta amachepetsera kapena amalemeretsa kusakaniza molingana ndi chiŵerengero cha mpweya wabwino kwambiri wa mpweya-mafuta pafupi ndi 14.7: 1. Choncho, sensa ya okosijeni ndiyo sensor yofunikira pamagetsi oyendetsa mafuta.Pokhapokha pamene sensa ya okosijeni ili pa kutentha kwakukulu (mapeto amafika kupitirira 300 ° C) makhalidwe ake angasonyezedwe mokwanira ndipo mphamvu imatha kutulutsa.Pafupifupi 800 ° C, imakhala ndi yankho lofulumira kwambiri pakusintha kwa kusakaniza, koma khalidweli lidzasintha kwambiri kutentha kochepa.