yakaputsika oxygen sensor

yakaputsika oxygen sensor inotungamira mukuwedzera kudyiwa kwemafuta, kuderera kwesimba rinoita hunhu hwemotokari, kusagadzikana kushanda kweinjini pakusaita, kuwedzera kwekupedza chepfu. Kazhinji, zvikonzero zvekuparara kweiyo okisijeni sensor sensor ndeye kukuvara kwayo kwemagetsi, kuputsika kwemagetsi (signal) wedunhu, kusvibiswa kwechikamu chinonzwa che sensor ine zvigadzirwa zvinopisa mafuta. Mune zvimwe zviitiko, semuenzaniso, kana kukanganisa p0130 kana p0141 kukaitika pane dashboard, iyo Cheki Engine yambiro mwenje inovhurwa. Zvinogoneka kushandisa muchina une chinokanganisa okisijeni sensor, asi izvi zvinotungamira kumatambudziko ari pamusoro.

Chinangwa cheokisijeni sensor

Iyo okisijeni sensor inoiswa mune exhaust manifold (iyo chaiyo nzvimbo uye huwandu hunogona kusiyana kune dzakasiyana mota), uye inotarisisa kuvepo kweokisijeni mumagasi ekuburitsa. Muindasitiri yemotokari, vara rechiGiriki "lambda" rinoreva chiyero cheokisijeni yakawandisa mumusanganiswa wemafuta emhepo. Ndicho chikonzero nei iyo okisijeni sensor inowanzonzi "lambda probe".

Ruzivo rwakapihwa nesensor pahuwandu hweokisijeni mukuumbwa kwemagasi ekupera nemagetsi ekudzora unit ICE (ECU) inoshandiswa kugadzirisa jekiseni remafuta. Kana pane okisijeni yakawanda mumagasi ekupedza, ipapo musanganiswa wemhepo-mafuta unopiwa kumasilinda hauna kunaka (voltage pa sensor ndeye 0,1 ... Volta). Saizvozvo, huwandu hwemafuta hunopihwa hunogadziriswa kana zvichidikanwa. Izvo zvinokanganisa kwete chete maitiro ane simba einjini yekupisa yemukati, asiwo mashandiro eiyo catalytic converter yeanopedza gasi.

Muzviitiko zvakawanda, huwandu hwekushanda kunobudirira kwechigadziridzo ndeye 14,6 ... 14,8 zvikamu zvemhepo pachikamu chemafuta. Izvi zvinoenderana nerambda kukosha kweimwe. saka, iyo okisijeni sensor imhando yekudzora iri mune exhaust manifold.

Dzimwe mota dzakagadzirwa kuti dzishandise masensa maviri eokisijeni. Imwe iri pamberi pecatalyst, uye yechipiri inotevera. Basa rekutanga nderokugadzirisa kuumbwa kwemhepo-mafuta musanganiswa, uye yechipiri ndeyekutarisa kushanda kwechinokonzera. Iwo ma sensor pachawo anowanzo kufanana mukugadzira.

Ko iyo lambda probe inokanganisa kutanga - chii chichaitika?

Kana iwe ukadzima lambda probe, ipapo pachava nekuwedzera kwekushandiswa kwemafuta, kuwedzera kwehutu hwemagasi, uye dzimwe nguva kushanda kusina kugadzikana kwejini inopisa mukati pasina basa. Nekudaro, izvi zvinoitika chete mushure mekudziya, sezvo iyo okisijeni sensor inotanga kushanda patembiricha inosvika + 300 ° C. Kuti uite izvi, magadzirirwo ayo anosanganisira kushandiswa kwekudziya kwakakosha, iyo inovhurwa kana injini yekupisa yemukati inotanga. Saizvozvo, panguva yekutanga injini, iyo lambda probe haishande, uye haina kukanganisa kutanga kwayo.

Iyo "cheki" mwenje muchiitiko chekuputsika kwelambda probe inovhenekera kana zvikanganiso zvakati zvagadzirwa mundangariro yeECU zvine chekuita nekukuvara kune sensor wiring kana sensor pachayo, zvisinei, iyo kodhi inogadziriswa chete pasi pemamwe mamiriro. injini inopisa yemukati.

Zviratidzo zvekuputsika kweokisijeni sensor

Kukundikana kwe lambda probe kunowanzo kuperekedzwa nezviratidzo zvekunze zvinotevera:

• Kuderera kwekufambisa uye kuderedzwa kwemotokari inoshanduka kuita.
• Kusagadzikana kusina basa. Panguva imwecheteyo, kukosha kwekuchinja kunogona kusvetuka uye kuwira pasi peiyo optimum. Munyaya yakanyanya kuoma, mota haiite zvachose uye pasina mutyairi kufemereka inongomira.
• Kuwedzera kushandiswa kwemafuta. Kazhinji overrun haina kukosha, asi inogona kutariswa nekuyerwa kwechirongwa.
• Kuwedzera kuburitsa. Panguva imwecheteyo, gasi rinopedza simba rinova rakajeka, asi rine grey kana bluish tint uye inopinza, kunhuhwirira kwemafuta.

Zvakakosha kutaura kuti zviratidzo zvakanyorwa pamusoro zvinogona kuratidza kumwe kuparara kweinjini yekupisa mukati kana mamwe masystem emotokari. Nokudaro, kuti uone kukundikana kweiyo okisijeni sensor, macheki akawanda anodiwa uchishandisa, kutanga kwezvose, diagnostic scanner uye multimeter kutarisa zviratidzo zve lambda (kutonga uye kupisa dunhu).

kazhinji, matambudziko ane oxygen sensor wiring anoonekwa zvakajeka nemagetsi control unit. Panguva imwecheteyo, zvikanganiso zvinogadzirwa mundangariro dzayo, semuenzaniso, p0136, p0130, p0135, p0141 nevamwe. Iva sezvazvinogona, zvakakosha kutarisa sensor circuit (tarisa kuvapo kwemagetsi uye kutendeseka kwetambo dzega), uyewo kutarisa purogiramu yebasa (uchishandisa oscilloscope kana chirongwa chekuongorora).

Zvikonzero zvekutadza kweiyo oxygen sensor

Muzviitiko zvakawanda, okisijeni lambda inoshanda kweanenge 100 zviuru zvemakiromita pasina kukundikana, zvisinei, pane zvikonzero zvinoderedza zvakanyanya zviwanikwa zvayo uye zvinotungamirira mukuputsika.

• yakaputsika oxygen sensor circuit. Taura iwe zvakasiyana. Uku kunogona kunge kuri kutyora kwakazara mukugovera uye / kana masaini waya. Zvinogoneka kukanganisa kumhepo inopisa. Muchiitiko ichi, lambda probe haishande kudzamara magasi ekubuda achidziya kusvika pakushanda tembiricha. Zvinogoneka kukuvadza kune insulation pane waya. Muchiitiko ichi, pane pfupi pfupi.
• Sensor short circuit. Muchiitiko ichi, inokundikana zvachose uye, maererano naizvozvo, haipe chero zviratidzo. Mazhinji lambda probes haagone kugadziriswa uye anofanirwa kutsiviwa nematsva.
• Kusvibiswa kwe sensor nezvigadzirwa zvekupisa kwehuni. Munguva yekushanda, iyo oksijeni sensor, nekuda kwezvikonzero zvechisikigo, zvishoma nezvishoma inosviba uye nekufamba kwenguva inogona kumira kuendesa ruzivo rwakakwana. Nechikonzero ichi, automakers vanokurudzira nguva nenguva kushandura sensor kune imwe nyowani, vachipa sarudzo kune yekutanga, sezvo lambda yepasirese isingawanzo kuratidza ruzivo nenzira kwayo.
• Thermal overload. Izvi zvinowanzoitika nekuda kwezvinetso nemoto, kureva, kukanganisa mukati maro. Pasi pemamiriro ezvinhu akadaro, sensor inoshanda pakudziya kwakakosha kwairi, iyo inoderedza hupenyu hwayo hwese uye zvishoma nezvishoma inodzima.
• Mechanical kukuvara kune sensor. Zvinogona kuitika panguva yebasa rekugadzirisa zvisiri izvo, paunenge uchityaira kunze kwemugwagwa, zvinokanganisa mutsaona.
• Shandisa paunenge uchiisa ma sensor sealants anorapa pakupisa kwakanyanya.
• Kuedza kwakawanda kusina kubudirira kutanga injini yekupisa yemukati. Panguva imwecheteyo, mafuta asina kupiswa anounganidza mukati mejini inopisa, uye iyo, mune yakawanda yekubuda.
• Bata neinonzwa (ceramic) tip ye sensor yeakasiyana maitiro emvura kana zvidiki zvekunze zvinhu.
• Kudonha mu exhaust system. Semuenzaniso, iyo gasket pakati pemanifold uye catalyst inogona kupisa kunze.

Ndokumbira utarise kuti mamiriro eiyo okisijeni sensor zvakanyanya zvinoenderana nemamiriro ezvimwe zvinhu zveinjini yekupisa yemukati. Saka, zvikonzero zvinotevera zvinoderedza zvakanyanya hupenyu hwe lambda probe: iyo isingafadzi mamiriro emafuta ekucheka zvindori, ingress ye antifreeze mumafuta (cylinders), uye yakafumiswa yemhepo-mafuta musanganiswa. Uye kana, nekushanda kweokisijeni sensor, chiyero che carbon dioxide inenge 0,1 ... 0,3%, zvino apo lambda probe inokundikana, kukosha kunowirirana kunowedzera kusvika 3 ... 7%.

Nzira yekuziva sei yakaputsika oxygen sensor

Kune akati wandei nzira dzekutarisa chimiro chelambda sensor uye yekugovera kwayo / masaini maseketi.

BOSCH nyanzvi dzinopa zano rekutarisa sensor inoenderana ega ega zviuru makumi matatu emakiromita, kana kana pakaonekwa kusashanda kwakatsanangurwa pamusoro.

Chii chinofanira kuitwa pakutanga pakuongororwa?

1. zvakakosha kufungidzira kuwanda kwesoti pane probe tube. Kana paine yakawandisa, iyo sensor haishande nemazvo.
2. Sarudza ruvara rwe deposits. Kana paine chena kana grey madhipoziti pane inonzwisisika chinhu che sensor, izvi zvinoreva kuti mafuta kana mafuta ekuwedzera anoshandiswa. Ivo vanokanganisa zvakanyanya kushanda kwelambda probe. Kana pane madhipoziti anopenya pachubhu yeprobe, izvi zvinoratidza kuti kune mutobvu wakawanda mumafuta anoshandiswa, uye zviri nani kuramba kushandisa peturu yakadaro, zvichiteerana, shandura mhando yechiteshi chegesi.
3. Iwe unogona kuedza kuchenesa soot, asi izvi hazviiti nguva dzose.
4. Tarisa kuvimbika kweiyo wiring ine multimeter. Zvichienderana nemuenzaniso weimwe sensor, inogona kuva nemawaya maviri kusvika mashanu. Chimwe chazvo chichava chiratidzo, uye chakasara chichave chiripo, kusanganisira chekusimbisa zvinhu zvekupisa. Kuti uite maitiro ekuyedza, iwe unozoda dhijitari multimeter inokwanisa kuyera DC voltage uye kuramba.
5. Zvakakodzera kutarisa kushorwa kweiyo sensor heater. Mune mhando dzakasiyana dze lambda probe, ichave iri pakati pe2 kusvika ku14 ohms. Kukosha kwemagetsi ekupa kunofanirwa kunge kuri 10,5 ... 12 Volts. Munguva yekusimbisa maitiro, inofanirwawo kutarisa kuvimbika kwetambo dzese dzakakodzera sensor, pamwe nekukosha kwekupokana kwavo kwekudzivirira (zvose zviri zviviri pakati pavo, uye imwe neimwe pasi).

Maitiro ekutarisa lambda probe vhidhiyo

Ndokumbira utarise kuti yakajairika kushanda kweiyo okisijeni sensor inongogoneka pane yakajairika tembiricha yekushanda ye +300 ° С…+400 ° С. Izvi zvinokonzerwa nekuti chete pasi pemamiriro ezvinhu akadaro iyo zirconium electrolyte yakaiswa pane inonzwisisika chinhu che sensor inova conductor yemagetsi ikozvino. zvakare pakupisa uku, musiyano uripo pakati peokisijeni yemuchadenga neokisijeni mupombi yekuburitsa ichaita kuti magetsi aoneke pane sensor electrodes, inozoendeswa kune yemagetsi control unit yeinjini.

Sezvo kutarisa iyo okisijeni sensor muzviitiko zvakawanda kunosanganisira kubvisa / kuisa, zvakakodzera kufunga anotevera nuances:

• Lambda midziyo haina kusimba, saka, kana ichitarisa, haifanirwe kuve pasi pekunetseka kwemagetsi uye / kana kuvhunduka.
• Iyo tambo ye sensor inofanirwa kurapwa neyakakosha yekupisa paste. Muchiitiko ichi, iwe unofanirwa kuve nechokwadi kuti iyo paste haisviki pane yayo inonzwisisika chinhu, sezvo izvi zvichizotungamira kune yayo isiriyo kushanda.
• Paunenge uchiomesa, iwe unofanirwa kucherechedza kukosha kweiyo torque, uye shandisa torque wrench nechinangwa ichi.

Cheki chaiyo ye lambda probe

Iyo yakanyanya kurongeka nzira yekuona kuparara kweiyo oxygen concentration sensor inobvumira iyo oscilloscope. Uyezve, hazvidiwi kushandisa dhizaini yehunyanzvi, unogona kutora oscillogram uchishandisa simulator chirongwa pane laptop kana imwe gadget.

Rongedza kushanda chaiko kweiyo oxygen sensor

Nhamba yekutanga muchikamu chino igirafu yekushanda kwakakodzera kweiyo okisijeni sensor. Muchiitiko ichi, chiratidzo chakafanana neflat sine wave inoshandiswa kune iyo chiratidzo waya. Iyo sinusoid munyaya iyi inoreva kuti parameter inodzorwa ne sensor (huwandu hweokisijeni mumagasi emhepo) iri mukati memiganhu inobvumirwa, uye inongogara ichiongororwa uye nguva nenguva.

Inoshanda girafu yeyakanyanya kusvibiswa oxygen sensor

Oxygen sensor lean burn schedule

Oxygen Sensor Operation Chati pane Yakapfuma Fuel Musanganiswa

Oxygen sensor lean burn schedule

zvinotevera magirafu anoenderana ne sensor yakasvibiswa zvakanyanya, ICE mota yekushandisa yemusanganiswa wakaonda, musanganiswa wakapfuma, uye musanganiswa wakaonda. Mitsetse yakapfava pamagirafu inoreva kuti parameter inodzorwa yadarika miganhu inotenderwa mune imwe nzira kana imwe.

Maitiro ekugadzirisa yakaputsika okisijeni sensor

Kana gare gare cheki yakaratidza kuti chikonzero chiri mu wiring, ipapo dambudziko rinogadziriswa nekutsiva iyo wiring harness kana yekubatanidza chip, asi kana pasina chiratidzo kubva kune iyo sensor pachayo, inowanzoratidza kudikanwa kwekutsiva iyo oxygen concentration. sensor ine nyowani, asi usati watenga lambda nyowani, unogona kushandisa imwe yeinotevera nzira.

Maitiro ekutanga

Inosanganisira kuchenesa chinhu chinopisa kubva ku carbon deposits (inoshandiswa kana pane kuparara kweiyo oxygen sensor heater). Kuti ushandise nzira iyi, zvinodikanwa kupa mukana kune inonzwisisika ceramic chikamu chemudziyo, iyo yakavanzwa kuseri kwevhavha yekudzivirira. Iwe unogona kubvisa chivharo chakatsanangurwa uchishandisa faira yakatetepa, iyo yaunoda kucheka nayo munzvimbo ye sensor base. Kana zvisingakwanisi kubvisa chivharo zvachose, zvino inobvumirwa kubudisa mahwindo maduku anenge 5 mm muhukuru. Kuti uwedzere basa, iwe unoda nezve 100 ml ye phosphoric acid kana ngura inoshandura.

Kana chivharo chekudzivirira chave chabviswa zvachose, ipapo kuti udzorere pachigaro chayo, iwe uchafanirwa kushandisa argon welding.

Iyo yekudzoreredza maitiro inoitwa zvinoenderana neinotevera algorithm:

• Dururira 100 ml ye phosphoric acid mumudziyo wegirazi.
• Nyura iyo ceramic element ye sensor muasidhi. Hazvibviri kudzikisa zvachose sensor mu acid! Mushure maizvozvi, kumirira maminitsi makumi maviri kuti asidhi iparadze soot.
• Bvisa sensor uye woisuka pasi pemvura inomhanya yepombi, wozoisiya iome.

Dzimwe nguva zvinotora kusvika maawa masere kuchenesa sensor uchishandisa nzira iyi, nekuti kana soot isina kucheneswa kekutanga, zvino zvakakodzera kudzokorora maitiro maviri kana anopfuura, uye iwe unogona kushandisa brashi kuita pamusoro machining. Panzvimbo pebhurashi, unogona kushandisa bhurashi rezino.

Maitiro maviri

Inofungidzira kupisa kunze kabhoni deposits pane sensor. Kuti uchenese okisijeni sensor nenzira yechipiri, kuwedzera kune imwechete phosphoric acid, iwe uchadawo gasi rinopisa (sechisarudzo, shandisa chitofu chegasi reimba). Iyo yekuchenesa algorithm yakaita seiyi:

• Nyura iyo inonzwisisika ceramic element yeokisijeni sensor muasidhi, ichinyorovesa zvakanyanya.
• Tora sensor ine pliers kubva kudivi rakatarisana nechinhu uye uuye nayo kune inopisa inopisa.
• Asidhi iri pachinhu chinonzwa inofashaira, uye munyu wakasvibira uchaita pamusoro payo. Zvisinei, panguva imwe chete, soot ichabviswa mairi.

Dzokorora maitiro akatsanangurwa kakawanda kusvikira chinhu chinonzwisisika chakachena uye chichipenya.