INDLELA YOKUHLOLA inzwa ye-O2 NGE-MULTIMETER

Ngaphandle kwencazelo, injini yemoto yakho intekenteke futhi cishe iyingxenye ebaluleke kakhulu yemoto yakho.

Kunezinzwa eziningi eziyenza isebenze ngaphansi kwezimo ezifanele kakhulu, futhi uma enye yazo inephutha, injini isengozini. 

Ingabe unezinkinga zenjini?

Ingabe uke wenza izivivinyo kuzinzwa ezidume kakhulu njengenzwa ye-crankshaft noma inzwa ye-throttle position futhi usahlangabezana nenkinga efanayo?

Khona-ke inzwa ye-O2 ingase ibe yisigebengu esingadumile kangako.

Kulokhu okuthunyelwe, sizokuhambisa kuyo yonke inqubo yokuhlola izinzwa ze-O2, kusukela ekuqondeni ukuthi ziyini ukuya ekusebenziseni i-multimeter ukwenza ukuxilonga okuhlukahlukene.

Ake siqale.

Iyini inzwa ye-O2?

Inzwa ye-O2 noma inzwa ye-oxygen iyisisetshenziswa sikagesi esikala inani le-oxygen emoyeni noma uketshezi olusizungezile.

Uma kuziwa ezimotweni, inzwa yomoya-mpilo iyithuluzi elisiza injini ukuthi ilawule isilinganiso somoya kuphethiloli.

Isezindaweni ezimbili; kungaba phakathi kwe-nifold exhaust kanye nesiguquli se-catalytic, noma phakathi kwesiguquli se-catalytic kanye nembobo yokukhipha umoya.

Uhlobo oluvame kakhulu lwenzwa ye-O2 esetshenziswa ezimotweni yi-wideband zirconia sensor, enezintambo ezine ezixhunywe kuyo.

Lezi zintambo zihlanganisa intambo eyodwa yokukhipha isignali, intambo yaphansi eyodwa, nezintambo ezimbili ze-heater (umbala ofanayo). 

Intambo yesiginali ibaluleke kakhulu ekuxilongweni kwethu, futhi uma inzwa yakho ye-oxygen inephutha, ulindele ukuthi injini yakho izohlupheka futhi ibonise izimpawu ezithile.

Izimpawu zenzwa ye-O2 enephutha

Ezinye zezimpawu zenzwa ye-O2 enephutha zihlanganisa:

• Isibani se-Check Engine sivuliwe kudeshibhodi,
• Injini engasebenzi kahle,
• Iphunga elibi elivela enjinini noma epayipini lokukhipha umoya,
• Ukugxuma kwemoto noma ukukhuphuka kwamandla,
• Ukusebenza kahle kwamafutha kanye
• I-mileage engalungile emotweni, phakathi kwezinye izinto.

Uma ungashintshi inzwa yakho ye-O2 uma iqala ukuba nezinkinga, uzifaka engozini yokuthola izindleko ezengeziwe zokuthumela ezingase zifinyelele ezinkulungwaneni zamadola noma kuhlobo lwemali yakho yasendaweni.

Uzibheka kanjani izinkinga ngenzwa ye-O2?

Ithuluzi elikhulu lokuxazulula izinkinga izingxenye zikagesi yi-voltmeter yedijithali oyidingayo.

Uyivivinya kanjani inzwa ye-O2 usebenzisa i-Multimeter

Misa i-multimeter yakho kububanzi obungu-1-volt, hlola intambo yesiginali yenzwa ye-oxygen ngephini, bese ufudumeza imoto cishe imizuzu emihlanu. Xhuma umkhondo oqondile we-multimeter kutheminali yokuhlola engemuva, ugaye umthofu omnyama kunoma iyiphi indawo yensimbi eseduze bese uhlola ukufundwa kwe-multimeter phakathi kuka-2 mV no-100 mV. 

Kunezinyathelo eziningi ezengeziwe ezidingekayo, ngakho-ke sizoqhubeka nokuchaza zonke izinyathelo ngokuningiliziwe.

1. Thatha izinyathelo zokuvimbela

Ukuthatha izinyathelo ezisheshayo lapha kuzokusiza ukuthi ugweme ukuhlola okuqinile okufanele ukwenze kunzwa yakho ye-O2 ukuze uthole inkinga ngayo.

Okokuqala, uhlola izintambo ukuze ubone ukuthi zonakele noma zingcolile.

Uma ungayitholi inkinga ngazo, uzoqhubeka nokusebenzisa ithuluzi lokuskena njengesikena se-OBD ukuze uthole amakhodi amaphutha.

Amakhodi ephutha afana ne-P0135 ne-P0136, nanoma iyiphi enye ikhodi ebonisa inkinga ngesithwebuli komoyampilo, asho ukuthi awudingi ukwenza izivivinyo ezengeziwe kuso.

Kodwa-ke, ukuhlolwa kwe-multimeter kunemininingwane eyengeziwe, ngakho-ke kungase kudingeke wenze izivivinyo ezengeziwe.

2. Setha i-multimeter kububanzi obungu-1 volt

Izinzwa zomoya-mpilo zisebenza ngama-millivolts, okuyisilinganiso samandla kagesi aphansi kakhulu.

Ukuze wenze ukuhlola okunembile kwenzwa ye-oxygen, uzodinga ukusetha i-multimeter yakho kububanzi be-voltage ye-DC ephansi kakhulu; ububanzi 1 volt.

Ukufundwa okutholayo kusuka ku-100 millivolts kuya ku-1000 millivolts, okulingana no-0.1 kuya ku-1 volt ngokulandelanayo.

3. I-Rear Probe O2 Sensor Signal Wire

Udinga ukuhlola inzwa ye-O2 ngenkathi izintambo zayo ezixhumayo zixhunyiwe.

Kunzima ukufaka i-multimeter probe esokhethi lesixhumi, ngakho-ke udinga ukuyivikela ngephini.

Vele ufake iphinikhodi kutheminali yentambo yokuphumayo (lapho intambo yenzwa ixhumeka khona).

4. Beka i-multimeter probe kuphini lokuhlola elingemuva

Manje uxhuma i-probe ebomvu (enhle) ye-multimeter kuphini lokuhlola elingemuva, okungcono usebenzisa isiqeshana sengwenya.

Bese uhlikihla i-probe emnyama (negethivu) kunoma iyiphi indawo yensimbi eseduze (njenge-chassis yemoto yakho).

5. Khulisa imoto yakho

Ukuze izinzwa ze-O2 zisebenze kahle, kufanele zisebenze emazingeni okushisa acishe abe ngu-600 degrees Fahrenheit (600°F).

Lokhu kusho ukuthi kufanele uqale futhi ufudumeze injini yemoto yakho cishe imizuzu emihlanu (5) kuya kwengama-20 imoto yakho ize ifinyelele kuleli zinga lokushisa. 

Qaphela uma imoto ishisa kanje ukuze ungashi.

6. Linganisa imiphumela

Uma usubeke umkhondo wokuhlola ezindaweni ezifanele, sekuyisikhathi sokubheka ukufundwa kwe-multimeter. 

Uma inzwa yomoya-mpilo ifudumele, i-DMM kulindeleke ukuthi inikeze ukufunda okushintshashintsha ngokushesha phakathi kuka-0.1 no-1 volt uma inzwa isebenza kahle.

Uma ukufundwa kuhlala kufana nenani elithile (imvamisa licishe libe ngu-450 mV/0.45 V), inzwa inephutha futhi kufanele ishintshwe. 

Ukuqhubekela phambili, ukufunda okuhlala kunciphile (ngaphansi kuka-350mV/0.35V) kusho ukuthi kunophethiloli omncane engxubeni kaphethiloli uma kuqhathaniswa nomoya othathayo, kuyilapho ukufunda okuhlala kuphezulu (ngaphezulu kuka-550mV/0.55V) kusho ukuthi kunenqwaba yamandla. amafutha atholakalayo. ingxube kaphethiloli enjinini kanye nesilinganiso somoya esiphansi.

Ukufundwa okuphansi kungabangelwa futhi ipulaki ye-spark engalungile noma ukuvuza kwe-exhaust, kuyilapho ukufundwa okuphezulu kungabangelwa izici ezifana 

• Inzwa ye-O2 inoxhumo olubuthakathaka phansi
• I-valve ye-EGR ibhajwe ivuliwe
• I-spark plug eseduze nenzwa ye-O2
• Intambo yenzwa ye-O2 engcolisiwe ngenxa yobuthi be-silicon

Manje sekunokuhlolwa okwengeziwe ukuze kutholwe ukuthi ingabe inzwa ye-O2 isebenza kahle yini.

Lokhu kuhlola kusabela kungxube ethambile noma enothile futhi kusisiza ukuthi sihlole ukuthi ingabe inzwa isebenza kahle yini.

Ihlola Impendulo Yenzwa Ye-O2

Njengoba kushiwo ngaphambili, ingxube engenawo amandla ngokwemvelo ibangela inzwa ye-oxygen ukuthi ifunde i-voltage ephansi.

Uma ukufundwa kwenzwa kusaguquguquka phakathi kuka-0.1 V no-1 V, nqamula ipayipi le-vacuum ku-positive crankcase ventilation (PCV). 

I-multimeter manje kulindeleke ukuthi ikhiphe ukufundwa okuphansi kwe-0.2V kuya ku-0.3V.

Uma ingahlali njalo phakathi kwalokhu kufundwa okuphansi, kusho ukuthi inzwa inephutha futhi idinga ukushintshwa. 

Ukuhlola Impendulo Ecebile Yenzwa ye-O2

Ukuze uthole ukuhlolwa okuphezulu kwengxube, ufuna ukushiya ipayipi levacuum lixhumeke ku-PCV futhi esikhundleni salokho unqamule ipayipi lepulasitiki eliya ekuhlanganiseni kwesihlungi somoya.

Vala imbobo yepayipi endaweni yokuhlanza umoya ukuze uvimbele umoya ukuthi ungangeni enjinini.

Uma lokhu sekwenziwe, i-multimeter kulindeleke ukuthi ibonise inani elingaguquki elizungeze i-0.8V.

Uma ingabonisi inani eliphezulu eliqhubekayo, khona-ke inzwa inephutha futhi idinga ukushintshwa.

Ungahlola ngokuqhubekayo izintambo ze-O2 sensor heater usebenzisa i-multimeter.

Ihlola inzwa ye-O2 nge-Heater Wires

Vula ukudayela kwe-multimeter kusilungiselelo se-ohmmeter futhi uphenye intambo ye-heater yenzwa ye-O2 kanye netheminali yocingo oluphansi.

Manje xhuma ukuhola okuhle kwe-multimeter kwenye yamatheminali enzwa angemuva yocingo lwe-heater, bese uxhuma umthofu ongemuhle kutheminali yenzwa yangemuva yocingo oluphansi.

Uma i-oxygen sensor circuit ilungile, uzothola ukufundwa kwe-10 kuya ku-20 ohms.

Uma ukufunda kwakho kungangeni phakathi kwalobu bubanzi, inzwa ye-O2 inephutha futhi idinga ukushintshwa.

isiphetho

Ukuhlola inzwa ye-O2 ngomonakalo kuyinqubo ebandakanya izinyathelo ezimbalwa nezindlela zokuhlola. Qiniseka ukuthi uzenza zonke ukuze uqinisekise ukuthi ukuhlolwa kwakho kuphelele, noma ukuyise kumakhenikha uma kuba nzima kakhulu.

Imibuzo evame ukubuzwa

Mangaki ama-ohm okufanele inzwa ye-oxygen?

Inzwa ye-oxygen kulindeleke ukuthi ibonise ukumelana phakathi kuka-5 no-20 ohms, kuye ngemodeli. Lokhu kutholakala ngokubheka izintambo zokushisisa ngezintambo eziphansi ukuthi aziwona umonakalo.

Ingakanani i-voltage evamile yezinzwa eziningi ze-O2?

Ibanga elivamile lamandla kagesi lenzwa enhle ye-O2 liyinani elishintshashintshayo ngokushesha phakathi kwama-millivolts angu-100 no-1000 millivolts. Aguqulwa abe ngu-0.1 volt kanye ne-volt engu-1 ngokulandelana.