Khoutu ea phoso ea P20EE OBD2 - SCR NOx e sebetsang hantle ka tlase ho moeli, banka 1

Lethathamo la lintlha tsa DTC P20EE - OBD-II

Khoutu ea Phoso ea P20EE OBD2 - SCR NOx Catalyst Effective Below Threshold Bank 1

Khoutu ea OBD2 - P20EE e bolela'ng?

Ena ke Khoutu ea Mathata e Tloaelehileng ea Tlhatlhobo (DTC) e sebetsang ho likoloi tse ngata tsa OBD-II (1996 le tse ncha). Sena se ka kenyelletsa, empa ha se felle feela ho, Audi, Buick, Chevrolet, Ford, GMC, Mercedes-Benz, Subaru, Toyota, Volkswagen, jj. Le ha mehato e akaretsang ea ho lokisa e ka fapana ho latela selemo sa tlhahiso, sebopeho, mmotlolo le phetisetso phetiso. ...

Ha P20EE e bolokoa ka koloing ea disele e nang le OBD-II, ho bolela hore mojule oa taolo ea powertrain o hlokometse hore ts'ebetso ea catalyst e ka tlase ho moeli oa mofuta o itseng oa enjene. Khoutu ena e sebetsa ho converter ea catalytic (kapa NOx trap) bakeng sa banka ea pele ea lienjineri. Bank one ke sehlopha sa enjene se nang le silindara ea pele.

Le ha lienjine tsa sejoale-joale tse sa hloekang li na le menyetla e mengata ho feta lienjine tsa peterole (haholo-holo literakeng tsa khoebo), li tloaetse ho ntša likhase tse ling tse kotsi ho feta tse ling. Lintho tse hlahelletseng ka ho fetisisa tse silafatsang ke li-ion tsa nitrogen oxide (NOx).

Sistimi ea Exhaust Gas Recirculation (EGR) e thusa haholo ho fokotsa mochini oa NOx, empa lienjineri tse ngata tsa kajeno tse nang le matla ha li khone ho fihlela maemo a thata a US (US) a sebelisang mochini oa EGR feela. Ka lebaka lena, lits'ebetso tsa SCR li entsoe.

Litsamaiso tsa SCR li kenya mokelikeli oa Diesel Exhaust Fluid (DEF) ka har'a likhase tse tsoang ka har'a noka ea phetoho ea catalytic kapa leraba la NOx. Kenyelletso ea DEF e phahamisa mocheso oa likhase tsa ho qeta le ho lumella karolo ea catalytic hore e sebetse hantle. Sena se eketsa bophelo ba mantlha mme se fokotsa tlhahiso ea NOx.

Lisebelisoa tsa oksijene (O2), lisele tsa NOx le / kapa lisebelisoa tsa mocheso li behoa pele le ka morao ho ts'ebetsong ho hlahloba mocheso le katleho ea eona. Sisteme eohle ea SCS e laoloa ke PCM kapa molaoli ea ikemetseng ea buisanang le PCM. Ho seng joalo, molaoli o lekola lisebelisoa tsa O2, NOx le mocheso (hammoho le lisebelisoa tse ling) ho fumana nako e nepahetseng ea ente ea DEF. Precision DEF ente e hlokahala ho boloka mocheso oa khase o tsoa maemong a amohelehang le ho etsa bonnete ba hore ho khefatsoa ha NOx.

Haeba PCM e lemoha hore ts'ebetso ea ts'ebetso e sa lekana bakeng sa maemo a tlase a amohelehang, khoutu ea P20EE e tla bolokoa 'me lebone la sesupo sa ho se sebetse le ka bonesa.

P20ee DTC e na le bothata bofe?

Likhoutu life kapa life tse bolokiloeng tse amanang le SCR li ka etsa hore sistimi ea SCR e koalehe. Khoutu ea P20EE e bolokiloeng e lokela ho nkuoa e le ea bohlokoa 'me e lokisoe kapele kamoo ho ka khonehang. Haeba khoutu e sa lokisoe kapele, e ka senya converter ea catalytic.

A mang a matšoao a khoutu ke afe?

Matšoao a khoutu ea bothata ea P20EE a ka kenyelletsa:

• Mosi o motšo o feteletseng o tsoang ho koloi
• Ts'ebetso ea enjene e fokotsehileng
• Fokotsa matla a mafura
• Likhoutu tse ling tse bolokiloeng tsa SCR le mohlapo

Mabaka a mang a tloaelehileng a khoutu ea P20EE ke afe?

Mabaka a khoutu ena a ka kenyelletsa:

• Haelloang O2, NOx kapa mocheso kutlo
• Sistimi e robehileng ea SCR
• Sesebelisoa sa SCR se nang le phoso
• Mokelikeli oa DEF o fosahetseng kapa o sa lekaneng
• Sesefa se sebe sa diesel particulate (DPF)
• Ho lutla hoa mohatsela
• Tšilafalo ea mafura
• Taolo e mpe ea SCR kapa phoso ea ho etsa mananeo
• Ho tsoa hoa metsi ka pel'a sethothetsi
• Ho kenya likarolo tsa sistimi ea ho qeta monono eo e seng ea mantlha kapa e phahameng

Khoutu ea Phoso ea P20EE

Ho fumana lisosa tsa khoutu ea OBD2 - P20EE

Ho hlahloba DTC P20EE, setsebi se tlameha ho:

1. Hlakola likhoutu ho ECM 'me u shebe data ea foreimi bakeng sa likhoutu tsa mathata.
2. Lekola litlaleho tsa nalane ea koloi bakeng sa likhoutu tse amanang le NOx tse neng li setiloe pele.
3. Sheba mosi o bonahalang ho tsoa phala ea ho ntša metsi 'me u hlahlobe mochine oa ho ntša metsi bakeng sa ho lutla kapa tšenyo.
4. Sheba lisebelisoa tsa hose ho netefatsa hore ha ho na litšitiso.
5. Lekola bokantle ba DPF kapa SCR catalytic converter bakeng sa lelakabe le tingoeng kapa matšoao a hlakileng a tšenyo.
6. Lekola tšupa e tlatsitsoeng ea DEF bakeng sa ho lutla, boits'oaro ba cap, le ho lekana hantle ha cap to fluid line.
7. Lekola boemo ba DTC ho ECM ho netefatsa hore sistimi ea SCR e ea sebetsa.
8. Sheba lintlha tsa bohlokoa tsa enjine bakeng sa matšoao a tšenyo kapa tšebeliso e feteletseng ea mafura ka lebaka la ho se sebetse hantle ha enjine kapa ho hloleha ha turbo boost.

Mehato ea ho rarolla mathata bakeng sa P20EE ke efe?

Haeba ho bolokiloe likhoutu tse ling tsa SCR kapa tsa khase ea mocheso oa moea, li lokela ho hlakoloa pele li leka ho fumana P20EE e bolokiloeng.

Ho lutla ho fe kapa hofe ha metsi ka pel'a sefetoleli se thusang ho lokisa ho lokela ho lokisoa pele u leka ho fumana mofuta ona oa khoutu.

Ho khetholla khoutu ea P20EE ho tla hloka phihlello ho sekena sa tlhahlobo, dijithale volt / ohmmeter (DVOM), infrared thermometer e nang le sesupi sa laser, le mohloli oa tlhaiso-leseling ea tlhahlobo bakeng sa sistimi ea hau ea SCR.

Batla Bulletin ea Tšebeletso ea Tekheniki (TSB) e tsamaellanang le selemo sa tlhahiso, sebopeho le koloi; hammoho le ho fallisoa ha enjene, likhoutu tse bolokiloeng, le matšoao a fumanoeng li ka fana ka tlhaiso-leseling e sebetsang ea ho hlahloba.

Qala ho hlahlojoa ka ho hlahloba ka mahlo sistimi ea ente ea SCR, ho felisa mocheso oa mocheso oa khase, li-sensor tsa NOx, le lihokelo le lihokelo tsa oksijene (02). Mehala e chesitsoeng kapa e senyehileng le / kapa likhokelo li tlameha ho lokisoa kapa ho nkeloa sebaka pele li tsoela pele.

Ebe u fumana sehokedi sa tlhahlobo ea koloi ebe o kenya sekena. Khutlisa likhoutu tsohle tse bolokiloeng le data ea foreime e tsamaellanang ebe u ngola tlhaiso-leseling eo pele u hlakola likhoutu. Ebe u leka ho khanna koloi ho fihlela PCM e kena ka mokhoa oa ho itokisa kapa hore khoutu e hlakoloe.

Haeba PCM e kena ka mokhoa o loketseng, khoutu e bohareng 'me ho ka ba thata haholo ho e fumana ka nako ena. Maemo a tlatselitseng ho phehelleng ha khoutu a ka hloka ho mpefala pele ho ka fumanoa hore na o na le eng.

Haeba khoutu e hlophisoa bocha hang-hang, batla mohloli oa tlhaiso-leseling ea koloi ea hau bakeng sa lits'oants'o tsa "diagnost block", li-pinout tsa sehokelo, lifahleho tsa sehokedi, le lits'ebetso tsa liteko tsa likarolo. Tlhahisoleseling ena e tla hlokahala ho phethela mehato e latelang tlhahlobo ea hau.

Hlokomela phallo ea data ea scanner ho bapisa ho baloa ha li-sensors tsa khase (pele le kamora ho hloekisa) O2, NOx le thempereichara lipakeng tsa enjene. Haeba ho se lumellane ho fumanoe, hlahloba li-sensor tse tsamaellanang u sebelisa DVOM. Lisele tse sa sebetsaneng le litlhaloso tsa moetsi li lokela ho nkuoa li haella.

Haeba li-sensors le lipotoloho tsohle li sebetsa hantle, belaela hore karolo ea catalytic e na le phoso kapa hore sistimi ea SCR ha e sebetse hantle.

• Etsa bonnete ba hore polokelo ea DEF e tletse mokelikeli o nepahetseng 'me ha e silafatsoe ka tsela efe kapa efe.

Tloaelehileng P20EE Liphoso tsa ho Rarolla mathata

Tse latelang ke tse ling tsa liphoso tse atileng haholo tseo setsebi se ka li etsang ha se fumana khoutu ea P20EE:

• Tlhahlobo ea Lintlha tsa Frame Frame e sieo ho ECM
• Tlaleho ea nalane ea koloi ha e ea hlahlojoa bakeng sa likhoutu tse amanang le SCR
• Ho lokisa bothata bo le bong ntle le ho utloisisa ka botlalo hore na bo amana joang le mathata a mang a tsamaiso.

Ke litokiso life tse ka lokisang khoutu ea P20ee?

Mona ke litharollo tse ka rarollang bothata bona:

• Phetoho ea mokelikeli oa DEF
• Phetoho ea sensor ea NOx
• Ho fetola karolo ea sefa ea DPF
• Ho nkela sebaka sa mohala o amanang le sistimi ea SCR
• Ho nkela sebaka sa SCR Catalyst e Senyehileng kapa e Koetsoeng
• Ho tlosa mafome a mafome kapa a phatlohileng
• Ho tlosa liente tse senyehileng kapa tse sa sebetseng hantle
• Ho kenya sensor ea Turbocharger

Likhoutu tsa phoso tse amanang le OBD2:

P20EE e amahanngoa le 'me e ka tsamaea le likhoutu tse latelang:

• P2031 - SCR e sa sebetseng hantle
• P2032 - Ho se sebetse hantle ha valve ea switching ea sistimi ea SCR
• P2137 - Voltage e tlase ho potoloho e ka pele ea oksijene (HO2S), bank 1, sensor 1
• P2138 - Front Heated Oxygen Sensor (HO2S) Circuit High Voltage Bank 1

fihlela qeto e

Qetellong, khoutu P20EE ke khoutu ea bothata ba ho hlahloba e amanang le SCR NOx Catalyst Efficiency Under Threshold malfunction. Sena se ka bakoa ke lintlha tse 'maloa, empa lisosa tse atileng haholo ke mathata a sefahla sa DPF le mokelikeli oa DEF. Setsebi se lokela ho hlahloba lisosa tsena tse ka bang teng le ho hlahloba bukana ea litšebeletso ho hlahloba le ho lokisa khoutu ena hantle.