Sensor yeokisijeni yemotokari.
Sensor yeokisijeni yemotokari ndiyo sensor huru yemhinduro muhurongwa hwekudzora injini yeEFI, uye ndiyo chikamu chakakosha chekudzora kuburitswa kweutsi hwemotokari, kuderedza kusvibiswa kwenharaunda yemotokari uye kuvandudza mhando yemafuta einjini yemotokari.
Kune mhando mbiri dzezvinonzwa okisijeni, zirconia netitanium dioxide.
Chinoongorora okisijeni kushandiswa kwezvinhu zvinonzwa ceramic kuyera kugona kweokisijeni muzvitofu zvakasiyana-siyana zvinopisa kana mapaipi eutsi, kuverenga huwandu hweokisijeni hunoenderana nepfungwa yekuenzana kwemakemikari, kutarisa nekudzora chiyero chemhepo-mafuta anobvira muchoto, kuve nechokwadi chemhando yezvigadzirwa uye mwero wekubuda kweutsi kwezvinhu zvinoyera, zvinoshandiswa zvakanyanya mumhando dzese dzekupiswa kwemarasha, kupisa mafuta, kupisa gasi nezvimwe zvinhu zvinodzora mhepo muchoto.
Chinoongorora okisijeni chinoshandiswa nemagetsi kudzora nzira yekudzora mhinduro yechinhu chinopinza mafuta kuti chione huwandu hweokisijeni mugasi rinobuda mumhepo uye huwandu hwehuwandu hwemhepo-mafuta, kutarisa huwandu hwemhepo-mafuta hunobvira muinjini, uye kutumira zviratidzo zvekupindura kukombiyuta.
Musimboti wekushanda
Sensor yeokisijeni inoshanda zvakafanana nebhatiri, nechinhu chinonzi zirconia musensor chichishanda seelectrolyte. Nheyo huru yekushanda ndeiyi: pasi pemamwe mamiriro (tembiricha yakakwira uye platinum catalysis), musiyano wehuwandu hweokisijeni pakati pemukati nekunze kweHao oxide unoshandiswa kugadzira musiyano wepositi, uye musiyano wehuwandu hwepositi yakakura, musiyano wepositi mukuru. Huremu hweokisijeni mumhepo ndeye 21%, gasi remhepo mushure mekupiswa kwakasimba harina okisijeni, uye gasi remhepo rinogadzirwa mushure mekupiswa kwemusanganiswa we diluted kana gasi remhepo rinogadzirwa nekushaikwa kwemoto rine okisijeni yakawanda, asi richiri shoma pane okisijeni mumhepo.
Pasi pekushandiswa kwekupisa kwakanyanya uye platinum, okisijeni yakabatana nesensor yeokisijeni inodyiwa, saka musiyano wevoltage unogadzirwa, voltage inobuda yemusanganiswa wakaomeswa iri pedyo ne1V, uye musanganiswa wedilute uri pedyo ne0V. Zvichienderana nechiratidzo chevoltage chesensor yeokisijeni, chiyero chemhepo-mafuta chinodzorwa kugadzirisa upamhi hwepulse yeinjection yemafuta, saka kudzora kwemagetsi kwesensor yeokisijeni ndiyo sensor inokosha yekuenzanisa mafuta. Sensor yeokisijeni inogona kutsanangurwa zvizere chete pakupisa kwakanyanya (mugumo unosvika kupfuura 300 ° C) uye inogona kuburitsa voltage. Inokurumidza kupindura kune shanduko mumusanganiswa paanenge 800 ° C.
Mazano
Sensor yeokisijeni yezirconium dioxide inoratidza kuchinja kwekuwanda kwemusanganiswa unobvira kuburikidza nekuchinja kwevoltage, uye sensor yeokisijeni yetitanium dioxide inoratidza kuchinja kwemusanganiswa unobvira kuburikidza nekuchinja kweresistance. Sisitimu yekudzora yemagetsi inoshandisa zirconia oxygen sensor haigone kudzora chiyero chemhepo-mafuta chaiwo pedyo nechiyero chemhepo-mafuta chedzidziso kana mamiriro ekushanda kweinjini aderera, nepo sensor yeokisijeni yetitanium dioxide inogonawo kudzora chiyero chemhepo-mafuta chaiwo pedyo nechiyero chemhepo-mafuta chedzidziso kana mamiriro ekushanda kweinjini aderera.
Vhoriyamu yejekiseni (upamhi hwepipi yejekiseni) inogadziriswa neyuniti yekudzora munguva pfupi zvichienderana nechiratidzo che sensor yeokisijeni inonzi kugadzirisa mafuta kwenguva pfupi, iyo inodzorwa nemagetsi anobuda e sensor yeokisijeni.
Kugadziriswa kwemafuta kwenguva refu ndiko kukosha kunoonekwa nekushandurwa kwechimiro chedata rekushanda kweyuniti yekudzora zvichienderana nekuchinja kwehuwandu hwekugadzirisa mafuta kwenguva pfupi.
Mhosva yakajairika
Kana sensor yeokisijeni yakundikana, komputa yemagetsi inopinza mafuta haigone kuwana ruzivo rwehuwandu hweokisijeni mupombi yekubuda, saka haigone kudzora huwandu hwemhepo nemafuta, izvo zvichawedzera kushandiswa kwemafuta einjini uye kusvibiswa kweutsi, uye injini ichaita seisina kugadzikana kumhanya, kushaya moto, kukwira kwemhepo nezvimwe zviitiko zvekukanganisa. Saka, kukanganisa kunofanirwa kubviswa kana kutsiviwa nenguva [1].
Mhosva yekuchetura
Kushandiswa kwepoisoning yeokisijeni kunowanzoitika uye kwakaoma kudzivirira kutadza kushanda, kunyanya kushandiswa kwemota dzepeturu dzine lead, kunyangwe sensor itsva yeokisijeni, inogona kushanda makiromita mashoma chete. Kana iri poisoning diki yelead, saka kushandisa tangi repeturu isina lead kunogona kubvisa lead iri pamusoro pe sensor yeokisijeni uye kuidzorera pakushanda kwayo kwakajairika. Zvisinei, kazhinji nekuda kwekupisa kwakanyanya kweutsi, lead inopinda mukati mayo, ichidzivisa kupararira kwemaion eokisijeni, zvichiita kuti sensor yeokisijeni isashande, panguva iyoyo inogona kungotsiviwa chete.
Pamusoro pezvo, chepfu yesilicon ye oxygen sensors inowanzoitikawo. Kazhinji, silica inogadzirwa mushure mekupiswa kwe silicon compounds dziri mu peturu nemafuta ekuzora, uye silicone gasi rinoburitswa nekushandiswa zvisina kunaka kwe silicone rabber sealing gaskets zvichaita kuti oxygen sensor isashande, saka mafuta emhando yepamusoro nemafuta ekuzora zvinofanira kushandiswa.
Pakugadzirisa, zvakakosha kusarudza nekuisa magasket erabha nemazvo, usaise zvinonyungudutsa uye zvinodzivirira kunamira kunze kweizvo zvakatarwa nemugadziri pasensor, nezvimwewo. Nekuda kwekupisa kusina kunaka kweinjini, makabhoni anoiswa pamusoro pesensor yeokisijeni, kana mafuta kana guruva uye mamwe madhaka anopinzwa mukati mesensor yeokisijeni, izvo zvinokanganisa kana kuvharira mweya wekunze kupinda mukati mesensor yeokisijeni, kuitira kuti chiratidzo chekubuda kwesensor yeokisijeni chisashande zvakanaka. ECU haigone kugadzirisa chiyero chemhepo-mafuta nekufamba kwenguva. Kugadzirwa kwemakabhoni kunonyanya kuratidzwa sekuwedzera kwekushandiswa kwemafuta uye kuwedzera kukuru kwehuwandu hwemhepo inobuda. Panguva ino, kana madhaka akabviswa, achadzokera pabasa rakajairika.
Kutsemuka kweCeramic
Ceramic ye oxygen sensor yakaoma uye inopwanyika, uye kugogodza nezvinhu zvakaoma kana kufefetera nemhepo ine simba kunogona kuita kuti iparare yokundikana. Saka, zvakakosha kungwarira zvikuru pakugadzirisa matambudziko uye kuatsiva nenguva.
Waya yebhuroko yapiswa
Waya inodzivisa kupisa inotsva. Kune sensor yeoxygen inodziya, kana waya inodzivisa kupisa ikatsva, zvinonetsa kuita kuti sensor isvike patembiricha yekushanda yakajairika yorasikirwa nebasa rayo.
Kubviswa kwemutsetse
Dunhu remukati re sensor yeokisijeni rabviswa.
Nzira yekuongorora
Kuongorora kuramba kupisa
Bvisa chivhariso cheharness ye oxygen sensor, woshandisa multimeter kuyera resistance iri pakati pe heater pole ne iron pole iri mu oxygen sensor terminal. Resistance value i4-40Ω (tarisa mirairo yemuenzaniso chaiwo). Kana isingasvike padanho rakatarwa, tsiva oxygen sensor.
Kuyerwa kwemagetsi emhinduro
Pakuyera voltage yemhinduro ye sensor yeokisijeni, harness plug ye sensor yeokisijeni inofanira kubviswa, uye waya yakatetepa inofanira kutorwa kubva pa output terminal ye feedback voltage ye sensor yeokisijeni zvichienderana ne circuit diagram yemuenzaniso, uye wobva wabatanidza harness plug. Vertical feedback inogona kuyerwa kubva pa lead line panguva yekushanda kweinjini (mamwe mamodheru anogonawo kuyera voltage yemhinduro ye sensor yeokisijeni kubva pa fault detection socket). Semuenzaniso, mota dzakatevedzana dzakagadzirwa neToyota Motor Company dzinogona kuyera voltage yemhinduro ye sensor yeokisijeni zvakananga kubva pa OX1 kana OX2 terminals mu fault detection socket).
Pakuyera voltage ye feedback ye oxygen sensor, zvakanakisisa kushandisa pointer type multimeter ine range yakaderera (kazhinji 2V) uye high impedance (internal resistance inopfuura 10MΩ). Nzira dzekuongorora dzakatarwa ndeidzi:
1. Isa injini pakupisa kusvika patembiricha yekushanda yakajairika (kana kuimhanyisa pa2500r/min mushure mekutanga kwemaminitsi maviri);
2. Batanidza chinyoreso che negative che multimeter voltage stop ku E1 kana electrode ye negative yebhatiri iri mu soketi yekuona zvikanganiso, uye chinyoreso che positive kune OX1 kana OX2 jack iri mu soketi yekuona zvikanganiso, kana kunhamba | iri pa plug ye wiring harness ye oxygen sensor.
3, rega injini irambe ichishanda nekumhanya kweinenge 2500r/min, uye tarisa kana pointer yevoltmeter ichigona kutenderera nekudzoka pakati pe0-1V, uye nyora huwandu hwema voltmeter pointer anotenderera mukati me10s. Mumamiriro ezvinhu akajairwa, nekufambira mberi kwekudzora mhinduro, voltage yemhinduro ye sensor yeokisijeni inogara ichichinja pamusoro uye pasi pe0.45V, uye voltage yemhinduro inofanira kuchinja kanenge kasere mukati me10s.
Kana iri pasi pekasere, zvinoreva kuti sensor yeokisijeni kana system yekudzora feedback haisi kushanda zvakanaka, izvo zvinogona kukonzerwa nekuunganidzwa kwekabhoni pamusoro pe sensor yeokisijeni, zvekuti kunzwa kwayo kunoderera. Kuti izvi zviitike, injini inofanira kushanda pa2500r/min kwemaminitsi angangoita maviri kubvisa carbon deposits pamusoro pe sensor yeokisijeni, uye wobva watarisa voltage yefeedback. Kana pointer yevoltmeter ichiri kuchinja zvishoma nezvishoma mushure mekunge kabhoni yabviswa, zvinoreva kuti sensor yeokisijeni yakakuvara, kana kuti computer feedback control circuit haina kunaka.
4, kuongorora kwemavara echitarisiko cheokisijeni sensor
Bvisa sensor yeokisijeni kubva papombi yekubuda utsi wotarisa kana gomba rekubuda kwemhepo riri paimba ye sensor rakavharika uye kana denga receramic rakakuvara. Kana rakakuvara, tsiva sensor yeokisijeni.
Zvikanganiso zvinogonawo kuonekwa nekutarisa ruvara rwechikamu chepamusoro che sensor yeokisijeni:
1, grey light top: iyi ndiyo ruvara rwakajairika rwe sensor yeokisijeni;
2, pamusoro muchena: kunokonzerwa nekusvibiswa kwesilicon, sensor yeokisijeni inofanira kutsiviwa panguva ino;
3, pamusoro pebrown (sezvinoratidzwa paMufananidzo 1): kunokonzerwa nekusvibiswa kwemutobvu, kana kwakakomba, kunofanirawo kutsiva sensor yeokisijeni;
(4) Dema pamusoro: rinokonzerwa nekuiswa kwekabhoni, mushure mekubvisa kukanganisa kwekabhoni muinjini, kuiswa kwekabhoni pa sensor yeokisijeni kunogona kubviswa otomatiki.
Kana uchida kuziva zvakawanda, ramba uchiverenga zvimwe zvinyorwa pane ino saiti!
Ndapota tifonerei kana muchida zvigadzirwa zvakadaro.
Zhuo Meng Shanghai Auto Co., Ltd.yakazvipira kutengesa zvikamu zvemotokari zveMG&MAUXS zvinogamuchirwaKutenga.
