I-P2457 Exhaust Gas Recirculation Cooling System Performance

Idatha ye-OBD-II DTC

Exhaust negesi Recirculation Ukupholisa Izici Izici

Kusho ukuthini lokhu?

Le Khodi Yezinkinga Zokuxilonga (i-DTC) yikhodi yokudlulisela ejwayelekile, okusho ukuthi isebenza kuzo zonke izimoto kusukela ngo-1996 (Ford, Dodge, GMC, Chevrolet, Mercedes, VW, njll.). Yize kuvamile emvelweni, izinyathelo ezithile zokulungisa zingahluka ngokuya ngohlobo lomkhiqizo / imodeli.

Uma imoto yakho efakwe i-OBD-II ikhombisa ikhodi engu-P2457, kusho ukuthi imodyuli yokulawula amandla we-powertrain (PCM) ithole ukungasebenzi kahle kohlelo lokupholisa i-exhaust gas (EGR). Lokhu kungaba inkinga yokusebenza noma inkinga kagesi.

Uhlelo lwe-EGR lubhekele ukuletha amanye amagesi e-exhaust abuyele kokuphindwe kaningi kokudla ukuze angashiswa okwesibili. Le nqubo iyadingeka ukunciphisa inani lezinhlayiya ze-nitrogen oxide (NOx) ezikhishwa emkhathini. I-NOx ineqhaza ekuqedeni ukukhishwa kwegesi okuqeda ungqimba lwe-ozone.

Isidingo sezinhlelo zokupholisa ze-EGR sinqunyelwe (ngokwazi kwami) ezimotweni zikadizili. Isipholisi senjini sisetshenziselwa ukunciphisa izinga lokushisa kwamagesi okukhipha injini ngaphambi kokufaka i-valve ye-EGR. Inzwa yokushisa yokubuyisa igesi yokukhipha itshela i-PCM ngezinguquko ekushiseni kwegesi yokukhipha eduze ne-valve yokukhipha igesi. I-PCM iqhathanisa okokufaka okuvela kwinzwa yokushisa ye-EGR kanye nenzwa yokushisa yegesi yokukhipha ukuphuma ukukhetha ukuthi uhlelo lwe-EGR lokupholisa lusebenza kahle yini.

Isipholi esibuyayo sokukhipha igesi imvamisa sifana nerediyetha encane (noma ingaphakathi lesifudumezi) esinamaphiko ngaphandle, indawo yokupholisa kanye ne-outlet, nepayipi elilodwa noma amaningi okukhipha noma amapayipi agudla phakathi nendawo. Umoya ugeleza phakathi kwamaphiko ukunciphisa izinga lokushisa lakho konke okupholisayo (okugeleza ngobubanzi obungaphandle bokupholisa) kanye ne-exhaust (egeleza phakathi nendawo yokubanda).

Inzwa yokushisa yegesi yokukhipha eyengeziwe imvamisa itholakala ku-downpipe, kuyilapho inzwa yokushisa yegesi yokukhipha itholakala eduze kwe-valve yokukhipha igesi. Uma okokufaka kwenzwa yokushisa ye-EGR kungekho ngaphakathi kokucacisiwe okuhleliwe, noma uma okokufaka kwenzwa ye-EGR ingekho ngaphansi kakhulu kunenzwa yokushisa yegesi yokukhipha okusizayo, i-P2457 izogcinwa futhi isibani sesibonisi sokungasebenzi kahle singakhanyisa.

Izimpawu nobukhali

Njengoba i-P2457 ihlobene nesistimu yokukhipha umoya, lokhu akubhekwa njengekhodi ye-flash. Izimpawu zekhodi ye-P2457 zingafaka:

Lapho le khodi igcinwa, kungahle kungabikho zimpawu
Ukunciphisa ukusebenza kwephethiloli
Ikhodi egciniwe
Ukukhanya kwesibani sokulawula sokungasebenzi kahle
Isipholisi esivuzayo
Khipha ukuvuza kwegesi
Amakhodi Okushisa Okushisa Kwegesi

izizathu

Izizathu ezingaba khona zokusetha le khodi:

Izinga lokupholisa injini ephansi
Inzwa yokukhipha igesi yokukhipha igesi ingasebenzi kahle
Inzwa yokushisa kwegesi engasebenzi kahle
Khipha ukuvuza
Exhaust igesi recirculation cooler ivalekile
Ukushisa ngokweqile kwenjini

Izinqubo zokuxilonga nokulungisa

Iphuzu elihle lokuqala ngaso sonke isikhathi ukuhlola ama-bulletins ezinsizakalo zobuchwepheshe (i-TSB) yemoto yakho ethile. Inkinga yakho ingaba inkinga eyaziwa ngesilungisi esikhishwe ngumkhiqizi futhi ingakongela isikhathi nemali ngenkathi uxazulula inkinga.

Olunye uhlobo lwesikena sokuxilonga, i-digital volt/ohmmeter, imanuwali yesevisi yemoto (noma okulinganayo), kanye nethemometha ye-infrared ene-laser pointer kungamathuluzi engingawasebenzisa ukuze ngihlole i-P2457.

Ngingaqala ngokuhlola ngokubonakalayo i-wiring nezixhumi ezihambisana nenzwa yokushisa ye-EGR kanye nenzwa yokushisa yegesi yokukhipha. Hlola eduze amahanisi wezintambo aseduze kwamapayipi wokushisa ashisayo kanye nezinqwaba. Hlola ibhethri ngaphansi komthwalo, hlola amatheminali ebhethri, izintambo zebhethri nokukhipha i-generator ngaphambi kokuqhubeka.

Ngithanda ukuxhuma isithwebuli emotweni futhi ngithole wonke amakhodi agciniwe futhi ngifrize idatha yozimele ngalesi sikhathi. Bhala imininingwane ngoba ungayidinga uma kuvela ukuthi iyikhodi engaqhubeki.

Ngiqaphe ukusakazwa kwedatha kwesithwebuli ukuthola ukuthi i-EGR ibiphola ngempela yini. Nciphisa ukusakaza kwakho kwedatha ukufaka kuphela ulwazi oludingayo ukuze uthole impendulo esheshayo nenembe kakhudlwana. Uma isithwebuli sikhombisa okokufaka kwangempela kokushisa kungaphakathi kokucacisiwe, sola iphutha le-PCM noma le-PCM elonakele.

Uma ukufundwa kwenzwa yokushisa ye-exhaust gas kunganembile noma kungaphandle kwebanga, hlola inzwa ngokulandela izincomo zomkhiqizi. Miselela inzwa uma ingahlangabezani nezincazelo zomkhiqizi. Uma inzwa isesimweni esihle, qala ukuhlola umjikelezo we-EGR sensor sensor. Nqamula zonke izilawuli ezihambisanayo ngaphambi kokuhlolwa nge-DVOM. Lungisa noma shintsha amasekethe avulekile noma afushane lapho kudingeka.

Uma uhlelo lukagesi lwenzwa yokushisa ye-EGR lusebenza kahle, sebenzisa i-infrared thermometer ukuhlola izinga lokushisa kwegesi emgodini opholile we-EGR nase-EGR coolelet (enenjini egijima nasezingeni lokushisa elijwayelekile). Qhathanisa imiphumela etholwe nemininingwane yomkhiqizi bese ushintsha izinto ezinamaphutha uma kudingeka.

Amanothi wokuxilonga angeziwe:

Ama-muffler we-Aftermarket nezinye izinto zohlelo lokukhipha kungadala ukushintshashintsha kokushisa kwegesi okukhipha, okungaholela ekutheni le khodi igcinwe.
Izinkinga zengcindezi yokukhipha emuva ezibangelwa isihlungi esanele sedizili (DPF) ziyaziwa ukuthi zithinta izimo zokugcina i-P2457.
Xilonga futhi ulungise amakhodi ahlobene ne-DPF ngaphambi kokuzama ukuthola le khodi.
Uma uhlelo lwe-EGR lulungisiwe kusetshenziswa ikhithi yokukhiya ye-EGR (okwamanje enikezwa yi-OEM ne-aftermarket), lolu hlobo lwekhodi lungagcinwa.

Izingxoxo ezihlobene ze-DTC

2014 VW Passat 2.0TDI P2457 - Inani: + RUB XNUMXNgabe ukhona onawo umdwebo opholile weVW Passat 2014 TDI 2.0. Imayini ishise kakhulu ngolunye usuku futhi ibheka ukuthi ukukhanya kwenjini enekhodi P2457 (ukusebenza kokupholisa i-EGR) kuyangena yini. Isebenza kahle esibayeni ngejubane elingenzi lutho, izinga lokushisa likhuphukela ku-190 futhi lihlala lapho. Ngolunye usuku ngiqaphele ...

Udinga usizo olwengeziwe ngekhodi le-p2457?

Uma usadinga usizo nge-DTC P2457, thumela umbuzo kumazwana angezansi kwalesi sihloko.

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