Lambda sonda, kako preveriti senzor kisika

Izpušni sistem avtomobila in sonda Lambda so tesno povezani. Razumeti je treba, da prisotnost te naprave v avtu ni naključna, načeloma, kot drugi visokotehnološki senzorji. Da, to so senzorji, saj se sonda Lambda še vedno imenuje drugačen senzor kisika (O 2-senzor), ki je popolnoma upravičen. Uporabnost tega senzorja močno vpliva na delovanje sistema za gorivo avtomobila kot celote, zato je treba preverjanje lambda sonde izvesti vsaj vsakih deset tisoč kilometrov kilometrov. Mnogi vozniki verjamejo, da sta približno 2-senzorja in katalizator tesno povezana z delom, vendar to ni povsem prava mnenje. Praviloma je katalizator nameščen po sondi lambda in ne vpliva na njegovo delovanje. Vendar pa prisotnost senzorja kisika bistveno razširja delovanje katalizatorja, saj je njena življenjska doba neposredno odvisna od kakovosti gorljive zmesi. O tem v članku.

Lambna sonda

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Načelo delovanja senzorja kisika

Pri oblikovanju senzorja kisika vključuje takšne komponente:

  1. Zaščitni ščit s posebno luknjo za sproščanje plinov.
  2. Spirala, ki se nahaja v posebnem rezervoarju.
  3. Keramični nasvet.
  4. Prevodne stike.
  5. Zaščitno ohišje, v katerem je luknja izvrtana, ki zagotavlja prezračevanje.
  6. Ožičenje s posebnimi manšeti za tesnjenje.
  7. Pečatni prstan).
  8. Keramični izolator.
  9. Kovinski primer s sesekljanimi rezbari.
Naprava tipala kisika
Naprava tipala kisika

Posebnost teh senzorjev - izključno toplotno odporne materiale se uporabljajo za njihovo proizvodnjo, saj morajo delovati pri visokih temperaturah.

Delo lambda sonde

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Lokacija senzorja kisika v avtu

Osnova sonde Lambda temelji na pojavu elektrollacijskega učinka. Pomen tega pojava temelji na dejstvu, da pri primerjavi izpušnih plinov in čistega atmosferskega zraka na elementih senzorja pride do napetosti. To se zgodi s pomočjo kompleksnih fizičnih procesov, kar tukaj nima smisla.

Katalizator senzorska emulator kisika
Katalizator senzorska emulator kisika

Tok iz senzorja kisika vstopi v računalnik, ki spremeni sestavo gorljive zmesi, odvisno od indikatorja napetosti. Lambna sonda deluje samo pri visokih temperaturah (300-400 stopinj Celzija), saj je samo v takih pogojih, električni tok proizvaja v senzorju in Galvanski element deluje.

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Na hladnem motorju se na pričevanje drugih senzorjev oblikuje vnetljiva zmes, tabarna lambda pa začne delovno delo samodejno pri vožnji motorja. Nekateri prevoz so nameščeni na 2-senzorji z vgrajenim ogrevanjem, ki je še vedno v zgodnji fazi delovanja motorja, zagotavlja zadnjo dobavo visoko kakovostne gorljive zmesi.

Če standard O 2-senzor deluje 40-70 tisoč kilometrov kilometrov, je vir iz sonde lambda z ogrevanjem bistveno večji.

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Lambda senzorja kisika sonda, saj vpliva na sestavo mešanice goriva

Po zgorevanju bencina, plini padejo v zbiralnik izpušnih plinov, kjer je senzor kisika pred plinskim katalizatorjem. Odstrani informacije o kvalitativnih značilnostih izpušnih plinov, zlasti količino preostalega kisika v njej v primerjavi z vsebnostjo 2 v atmosferskem zraku.

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Ta indikator je izjemno pomemben, ker računalnik s pomočjo računalnika izračuna optimalno razmerje goriva in kisika, da tvori vnetljivo zmes z tokom tovornimi obremenitvami, za najvišjo učinkovitost motorja.

Namestitev druge lambda sonde po katalizatorju omogoča računalniku z natančnejšimi izračuni, vendar v našem času je redkost.

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Treba je omeniti, da vsi izračuni temeljijo na enem pomembnem kazalniku - učinkovito izgorevanje enega dela goriva je sposobno zagotoviti 14,7 delov kisika.

Lambda sonda, vrste naprav

Odvisno od števila žic, s katerimi je senzor kisika priključen na sistem, obstajajo štiri vrste teh naprav:

  1. Štiri žice.
  2. Tri žice.
  3. Dvocela.
  4. Eno-žica.

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Senzor sonde kisika Lambda, povzroča poškodbe in ki ogroža avto med delovanjem

V razlogih je mogoče pripisati razčlenitvi senzorja kisika:

  1. Se prilegajo na ohišje različnih tehnoloških tekočin in umazanije.
  2. Povečana vsebnost svinca v zgorevanju.
  3. Uporaba goriva z visoko oktansko številko, ki ne vodi redko pregrevanja komponent sonde lambda.
  4. Slabo kakovostno gorivo.

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To lahko povzroči neprijetne posledice, in sicer:

  1. Zmanjšana moč.
  2. Palice v gibanju.
  3. Motor plavajoči promet.
  4. Videz pretirano onesnaženih izpušnih plinov.
  5. Nepravilno delovanje katalizatorja.
  6. Nepravilno delovanje injektorja.
  7. Velika poraba goriva.
  8. Na avtomobilih z avtomatskim menjalnikom se preklopna oprema pojavi z dotikom in jerkiranjem avtomobila.

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Lambda sonde, preverjanje zdravja senzorja z vizualno metodo, vzroki in posledicami:
umazanija, saje in snop na senzorju

Preden preverite senzor kisika s pomočjo naprav, je priporočljivo, da najprej ustvarite svoj vizualni pregled za prisotnost umazanije, saje in ger na senzorju.

Razlogi so pregrevanje sonde Lambda, zgorevanje ponovne vnetljive zmesi.
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Posledice - zavirali odziv senzorja kisika, pozno izdajo teh na računalnik in pozno napetost.

sero-bela odlaganje na senzorju

Vzroki - uporaba dodatkov različnih vrst goriva in olj.

Posledice - nepravilno delovanje sistema za gorivo, je potrebna naprava.

Prodaja in Nagar na senzorju kisika
Prodaja in Nagar na senzorju kisika

na briljantnih depozitih senzorja

Razlog je veliko svinca v gorivu.

Posledice - nepravilno delovanje sistema za gorivo, je potrebna naprava.

Barvne depozite
Sero-bele usedline

Senzor s kisikom Lambda Sonda, preverjanje storitev z napravami, podrobno delovanje pri preverjanju voltmetra za zmesi izčrpanega goriva

Preverjanje senzorja kisika z uporabo instrumentov samo v primeru, da zgoraj navedene napake niso bile zaznane med vizualnim pregledom. V nasprotnem primeru se sonda Lambda preprosto spremeni na novo.

Za diagnosticiranje lambda sonde z uporabo instrumentov veljajo:

  1. Izkušeni vozniki - Osciloskop.
  2. Za standardne preglede - voltmeter, boljši - digitalni.
  3. No, naravno, znanje.
Preverite lambda sonde voltmeter
Preverite lambda sonde voltmeter

Nato delujemo na ta način:

  1. Odklopite sondo Lambda iz blazinic z žicami.
  2. Povežite ga na voltmeter.
  3. Začnemo in segrejemo motor.
  4. Smo povečali število vrtljajev motorjev do 2000-2600, potem pa ostro metati pedal za plin.
  5. Od regulatorja sesalnega tlaka odstranite cev.
  6. Izmerjamo napetost, ki mora biti 0,45-0,8 vatov.

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S pomočjo cevi, ki se odstrani iz vakuumskega regulatorja, ustvarimo umetni zrak sušilec. Ko je izhodna napetost manjša od 0,2 W, se senzor deluje.

Kot možnost, da preverite delovanje senzorja kisika, ga preuredite v drugo vozilo, če so priključki primerni. Ni redko, da se ta preskusna metoda uporablja, če sta v družini dva avtomobila.

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Osciloskop preveri, dešifrirajte bralne grafe

Glavna prednost tega čeka je možnost, da popravi čas, za katerega se izhodna napetost spremeni. Ta pomemben kazalnik je določen le z osciloskopom in ne sme presegati več kot 120 ms. Spodnja slika označuje pravilno delovanje senzorja kisika.

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Kot vidite, napetost se gladko spreminja v območju od 0,1-0,75 W. Čas na sliki ni viden, kot je bilo že zgoraj, ne sme presegati 120 ms. Spodaj je na voljo popolnoma drugačna slika.

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Tukaj je videti, da je izhodna napetost padla pod 0-1 W. To nakazuje, da je sonda Lambda napačna in jo je treba zamenjati. S takšno razčlenitvijo senzorja kisika, na armaturni plošči, praviloma, "Preverite motor" zasveti.

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Na tej sliki, je upočasnitev gibanja lambda-sonde na spremembo količine kisika v izpušnem izpuhu označena z osciloskopom. Očitno presega 120 ms. Sistem za nadzor avtomobila ne more določiti te okvare, in na nadzorni plošči se ne prikaže napaka motorja. Glavne posledice te okvare je zmanjšati moč motorja in povečano porabo goriva.

Nasveti Pros: Kako pravilno preveriti

Vsi pregledi so narejeni samo na ogrevanem motorju z revolucijami 2000-2600. Za razliko od preverjanja z voltmetrom, kjer mora biti lambda sonda izklopiti iz krmilnika, pri preverjanju osciloskopa, senzor kisika iz omrežja ni potrebno.

Sonda osciloskopa je priključena na 2-senzorsko opozorilno žico in odčitavanje odstranjevanja. Lokacija priključkov si lahko ogledate na spodnji sliki.

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Na naslednji sliki se lahko seznanite s priključki kisikovih senzorjev, barvil za ožičenje in njihovo povezavo.

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Sklepi in priporočila

Potrebno je preveriti senzor kisika, saj je lahko posledice njegove okvare kritične, kot tudi popolnoma ustavljanje vozila. Pri zamenjavi te naprave je bolje uporabiti nov analog, saj je računalnik vaše naprave že prilagojen tako, da prejme signal iz tega modela.

Čeprav je vredno omeniti, da nekateri lastniki avtomobilov še vedno tvegajo in sestavljajo namesto pomanjkanja dragih senzorjev kisika poceni analogi. Na primer, za avtomobili Moskvich, VAZ približno 2 senzorji proizvaja BOSH. Prav tako jih proizvaja za Fordove avtomobile, tako evropski standard kakovosti. Posledično, za vozilo FORD lahko kupite analog naprave, izdelane za VAZ avtomobili. Najpomembnejše je, da je število stikov enako.

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