EGR valve

EGR valve - gawo loyambira lamagetsi otulutsa mpweya wotulutsa mpweya (Exhaust Gas Recirculation). ntchito EGR tichipeza kuchepetsa mlingo wa mapangidwe nayitrogeni oxides, zomwe ndizopangidwa ndi ntchito ya injini yoyaka mkati. Pofuna kuchepetsa kutentha, mpweya wina wotulutsa mpweya umatumizidwa ku injini yoyaka mkati. Mavavu amaikidwa pamainjini onse a petulo ndi dizilo, kupatula omwe ali ndi turbine.

Kuchokera kumalingaliro a chilengedwe, dongosololi limagwira ntchito yabwino, kuchepetsa kupanga zinthu zovulaza. Komabe, nthawi zambiri ntchito ya USR ndi gwero la mavuto ambiri kwa oyendetsa. Chowonadi ndi chakuti valavu ya EGR, komanso mphamvu zambiri zogwiritsira ntchito komanso zogwiritsira ntchito, zimakutidwa ndi mwaye panthawi ya ntchito, zomwe zimayambitsa kusakhazikika kwa injini yoyaka mkati. Chifukwa chake, eni magalimoto ambiri sagwiritsa ntchito kuyeretsa kapena kukonza, koma kusokoneza dongosolo lonse.

Vavu ya EGR ili kuti

Chipangizo chotchulidwacho chiri ndendende pa injini yoyaka mkati yagalimoto yanu. Mumitundu yosiyanasiyana, kuphedwa ndi malo kungakhale kosiyana, komabe, muyenera pezani kuchuluka kwa kudya. Kawirikawiri chitoliro chimachokera mmenemo. valavu ikhoza kuikidwanso pamtundu wambiri, m'magawo odyetserako kapena pamtundu wa throttle. Mwachitsanzo:

Vavu ya EGR pa Ford Transit VI (dizilo) ili kutsogolo kwa injini, kumanja kwa dipstick yamafuta.

Valve ya EGR pa Chevrolet Lacetti imawoneka nthawi yomweyo pomwe hood imatsegulidwa, ili kuseri kwa gawo loyatsira.

Vavu ya EGR pa Opel Astra G ili pansi pa ngodya yakumanja ya chivundikiro choteteza injini

 

komanso zitsanzo zingapo:

BMW E38 EGR valve

Valavu ya Ford Focus EGR

Valavu ya Opel Omega EGR

 

Kodi valve ya EGR ndi mitundu ya mapangidwe ake ndi chiyani

Kupyolera mu valavu ya EGR, kuchuluka kwa mpweya wotulutsa mpweya kumatumizidwa kuzinthu zambiri. ndiye amasakanizidwa ndi mpweya ndi mafuta, pambuyo pake amalowetsamo ma cylinders a injini yoyaka mkati pamodzi ndi mafuta osakaniza. Kuchuluka kwa mpweya kumatsimikiziridwa ndi pulogalamu yamakompyuta yomwe ili mu ECU. Zomverera zimapereka chidziwitso pakupanga zisankho ndi kompyuta. Nthawi zambiri iyi ndi sensa yoziziritsa kuzizira, sensa yamphamvu kwambiri, mita yoyenda mpweya, sensa ya throttle position, sensor yolowera kutentha kwa mpweya, ndi zina.

Dongosolo la EGR ndi valavu sizigwira ntchito mosalekeza. Kotero, iwo sanagwiritsidwe ntchito:

• idling (pa injini yoyaka moto mkati);
• ozizira mkati kuyaka injini;
• damper yotseguka kwathunthu.

Magawo oyamba omwe adagwiritsidwa ntchito anali pneumomechanical, ndiko kuti, kuyendetsedwa ndi vacuum yochuluka. Komabe, patapita nthawi anakhala electropneumaticndi (miyezo ya EURO 2 ndi EURO 3) komanso mokwanira zamagetsi (miyezo EURO 4 ndi EURO 5).

Mitundu ya ma valve a USR

Ngati galimoto yanu ili ndi EGR yamagetsi, imayendetsedwa ndi ECU. Pali mitundu iwiri ya ma valve a digito EGR - ndi mabowo atatu kapena awiri. Amatsegula ndi kutseka mothandizidwa ndi solenoids yogwira ntchito. Chipangizo chokhala ndi mabowo atatu chimakhala ndi magawo asanu ndi awiri obwerezabwereza, chipangizo chokhala ndi ziwiri chimakhala ndi magawo atatu. Valavu yabwino kwambiri ndi yomwe mlingo wake wotsegulira umagwiritsidwa ntchito pogwiritsa ntchito galimoto yamagetsi ya stepper. Amapereka kuwongolera bwino kwa kayendedwe ka gasi. Makina ena amakono a EGR ali ndi gawo lawo lozizirira gasi. Amakulolani kuti muchepetse kuchuluka kwa zinyalala za nitrogen oxide.

Zomwe zimayambitsa kulephera kwadongosolo ndi zotsatira zake

Depressurization ya valve EGR - kulephera kofala kwa dongosolo la EGR. Zotsatira zake, kuyamwa kosalamulirika kwa mpweya wambiri m'mipata yolowera kumachitika. Ngati galimoto yanu ili ndi injini yoyaka mkati yokhala ndi mita ya mpweya, izi zikuwopseza kutsamira mafuta osakaniza. Ndipo pakakhala mpweya wothamanga m'galimoto m'galimoto, kusakaniza kwa mafuta kudzalimbikitsidwanso, chifukwa chake kupanikizika kwazomwe zimapangidwira kumawonjezeka. Ngati injini yoyaka mkati ili ndi masensa onsewa, ndiye kuti ikakhala yopanda pake ilandila mafuta osakanikirana, ndipo m'njira zina zogwirira ntchito imakhala yowonda.

Valavu yakuda ndi vuto lachiwiri lofala. Zomwe tingapange nazo komanso momwe tingayeretsere, tidzakambirana pansipa. Chonde dziwani kuti kuwonongeka pang'ono pakugwira ntchito kwa injini yoyatsira mkati kungapangitse kuti pakhale mwayi woipitsidwa.

Kusweka konse kumachitika pazifukwa izi:

• mpweya wochuluka kwambiri umadutsa mu valve;
• mpweya wotulutsa mpweya wochepa kwambiri umadutsamo;
• thupi la valve likutuluka.

Kulephera kwa makina otulutsa mpweya wotulutsa mpweya kumatha chifukwa cha kulephera kwa magawo awa:

• mapaipi akunja operekera mpweya wotulutsa mpweya;
• EGR valve;
• valavu yotentha yolumikiza gwero la vacuum ndi valavu ya USR;
• solenoids zomwe zimayendetsedwa ndi kompyuta;
• osinthitsa mpweya kuthamanga.

Zizindikiro za valavu ya EGR yosweka

Pali zizindikiro zingapo zomwe zimasonyeza kuti pali mavuto pakugwira ntchito kwa valve ya EGR. Yaikulu ndi:

• ntchito yosakhazikika ya injini yoyaka mkati popanda ntchito;
• kuyimitsa pafupipafupi kwa injini yoyaka mkati;
• zolakwika;
• kugwedezeka kwagalimoto;
• kuchepa kwa vacuum pazowonjezera zomwe zimadya komanso, chifukwa chake, kugwira ntchito kwa injini yoyaka mkati mwamafuta osakanikirana;
• nthawi zambiri pakawonongeka kwambiri pakugwira ntchito kwa valavu yotulutsa mpweya wotulutsa mpweya - makina amagetsi agalimoto amawonetsa kuwala kwa cheke.

Pa diagnostics, zizindikiro zolakwika monga:

• P1403 - kuwonongeka kwa valavu yotulutsa mpweya wotulutsa mpweya;
• P0400 - cholakwika mu dongosolo mpweya recirculation;
• P0401 - kusagwira ntchito bwino kwa utsi wa gasi recirculation dongosolo;
• P0403 - waya yopuma mkati valavu ulamuliro wa dongosolo mpweya recirculation utsi;
• P0404 - kuwonongeka kwa valavu yolamulira ya EGR;
• P0171 Mafuta osakaniza ndiwowonda kwambiri.

Momwe mungayang'anire valavu ya EGR?

Mukamayang'ana, muyenera kutero kuyang'ana momwe machubu alili, mawaya amagetsi, zolumikizira ndi zigawo zina. Ngati galimoto yanu ili ndi valavu ya pneumatic, mungagwiritse ntchito pompopompo kuziyika mu kuchitapo. Kuti mudziwe zambiri, gwiritsani ntchito zida zamagetsi, zomwe zimakupatsani mwayi wopeza nambala yolakwika. Ndi cheke chotere, muyenera kudziwa magawo aukadaulo a valavu, kuti muzindikire kusiyana pakati pa data yomwe idalandilidwa ndi yolengezedwa.

Cheke ikuchitika motere:

1. Lumikizani mapaipi a vacuum.
2. Chotsani chipangizocho, pomwe mpweya suyenera kudutsamo.
3. Lumikizani cholumikizira ku valavu ya solenoid.
4. Pogwiritsa ntchito mawaya, yambitsani chipangizocho kuchokera ku batri.
5. Chotsani valavu, pamene mpweya uyenera kudutsamo.

Pamene cheke anasonyeza kuti wagawo si oyenera ntchito zina, amafuna kugula ndi kukhazikitsa latsopano, koma nthawi zambiri, akulangizidwa chabe kuzimitsa valavu USR.

Momwe mungaletsere valavu ya EGR?

Ngati pali mavuto pakugwira ntchito kwa dongosolo la EGR kapena valavu, ndiye kuti njira yosavuta komanso yotsika mtengo ndiyo kusokoneza.

Kuyenera kudziwidwa yomweyo kuti mmodzi kukonza chip sikokwanira. Ndiko kuti, kuzimitsa valavu kulamulira kudzera ECU sikuthetsa mavuto onse. Sitepe iyi imangopatula kuwunika kwadongosolo, chifukwa chomwe kompyuta sipanga cholakwika. Komabe, valve yokhayo ikupitiriza kugwira ntchito. Choncho, kuwonjezera m'pofunika kupanga mawotchi kusaganizira izo kuchokera ku ntchito ya ICE.

Ena opanga magalimoto amaphatikizapo mapulagi apadera a valve mu phukusi la galimoto. Nthawi zambiri, iyi ndi mbale yachitsulo yokhuthala (mpaka 3 mm wandiweyani), yopangidwa ngati dzenje mu chipangizocho. Ngati mulibe pulagi yoyambirira yotere, mutha kudzipanga nokha kuchokera kuchitsulo cha makulidwe oyenera.

Chifukwa cha kuyika pulagi, kutentha kwa ma cylinders kumakwera. Ndipo izi zikuwopseza chiopsezo cha ming'alu ya mitu ya silinda.

ndiye chotsani valavu ya EGR. M'mitundu ina yamagalimoto, kuchuluka kwamafuta kumayenera kuchotsedwanso kuti achite izi. Mogwirizana ndi izi, yeretsani ngalande zake kuti zisaipitsidwe. ndiye pezani gasket yomwe imayikidwa pamalo olumikizira ma valve. Pambuyo pake, m'malo mwake ndi pulagi yachitsulo yomwe tatchula pamwambapa. Mutha kuzipanga nokha kapena kuzigula kwa ogulitsa magalimoto.

Pamsonkhanowu, gasket yokhazikika ndi pulagi yatsopano imaphatikizidwa pamalo olumikizirana. Ndikofunikira kumangitsa kapangidwe kake ndi mabawuti mosamala, popeza mapulagi a fakitale nthawi zambiri amakhala osalimba. Pambuyo pake, musaiwale kulumikiza ma hoses akusefukira ndikuyika mapulagi. Pamapeto pa ndondomekoyi, muyenera kupanga chip chomwe chatchulidwa, ndiko kuti, kusintha firmware ya ECU kuti kompyuta isawonetse zolakwika.

Momwe mungaletsere EGR

Timazimitsa EGR

Kodi zotsatira za kusokoneza dongosolo la USR ndi chiyani?

Pali mbali zabwino ndi zoipa. Zabwino zikuphatikizapo:

• mwaye suunjikira m’chotolera;
• kuonjezera makhalidwe amphamvu a galimoto;
• palibe chifukwa chosinthira valavu ya EGR;
• kusintha mafuta pafupipafupi.

Magulu oyipa:

• ngati pali chothandizira mu injini yoyaka mkati, ndiye kuti idzalephera mofulumira;
• chipangizo cholozera chosweka pa dashboard chimayatsidwa ("chekeni" babu);
• zotheka kuwonjezeka kwa mafuta;
• kuchuluka kwa kuvala kwamagulu a valve (kawirikawiri).

Kuyeretsa valavu ya EGR

Nthawi zambiri, dongosolo la EGR likhoza kubwezeretsedwanso poyeretsa chipangizocho. Nthawi zambiri kuposa ena, eni magalimoto Opel, Chevrolet Lacetti, Nissan, Peugeot magalimoto.

Moyo wautumiki wa machitidwe osiyanasiyana a EGR ndi 70 - 100 km.

pa kuyeretsa EGR pneumatic valve kufunika kwa mwaye mpando woyera ndi tsinde... Liti kuyeretsa EGR ndi valve solenoid control, kawirikawiri, fyuluta ikutsukidwa, zomwe zimateteza dongosolo la vacuum kuti lisaipitsidwe.

Pakutsuka, mufunika zida zotsatirazi: mawotchi otsegula ndi mabokosi, zotsuka ziwiri za carburetor (thovu ndi kupopera), Phillips screwdriver, ma valve lapping phala.

Kuyeretsa valavu ya EGR

Mukapeza komwe valve ya EGR ili, muyenera pindani ma terminals kuchokera ku batri, komanso cholumikizira kuchokera pamenepo. ndiye, pogwiritsa ntchito wrench, masulani mabotolo omwe akugwira valavu, pambuyo pake timachichotsa. Mkati mwa chipangizocho uyenera kuthiridwa ndi carburetor flush.

M'pofunika kutsuka njira muzobwezedwa ndi thovu zotsukira ndi chubu. Ndondomeko iyenera kuchitidwa mkati mwa 5 ... 10 mphindi. Ndipo bwerezani mpaka kasanu (malingana ndi mlingo wa kuipitsidwa). Panthawiyi, valavu yoviikidwa kale yavunda ndipo yakonzeka kuti iwonongeke. Kuti muchite izi, masulani mabawuti ndikuchita disassembly. Kenako, mothandizidwa ndi lapping phala, ife akupera valavu.

Pamene lapping yachitika, muyenera kusamba bwinobwino zonse, ndi sikelo, ndi muiike. ndiye muyenera kuumitsa bwino ndikusonkhanitsa chilichonse. komanso onetsetsani kuti muyang'ane valavu kuti mukhale olimba. Izi zimachitika pogwiritsa ntchito mafuta a palafini, omwe amathiridwa m'chipinda chimodzi. Timadikirira kwa mphindi 5, kuti palafini asalowe m'chipinda china, kapena kumbali yakumbuyo, kunyowa sikuwoneka. Ngati izi zitachitika, ndiye kuti valve sichimasindikizidwa mwamphamvu. Kuti muchepetse kuwonongeka, bwerezani ndondomeko yomwe tafotokozayi. Kusonkhanitsa kwa dongosolo kumachitidwa motsatira dongosolo.

Kusintha kwa valve EGR

Nthawi zina, valavu ikalephera, ndikofunikira kuyisintha. Mwachilengedwe, njirayi idzakhala ndi mawonekedwe ake amtundu uliwonse wagalimoto, komabe, mwazinthu zambiri, ma aligorivimu adzakhala pafupifupi ofanana.

Komabe, atangotsala pang'ono kusintha, ntchito zingapo ziyenera kuchitidwa, zomwe zimagwirizana ndi makompyuta, kubwezeretsanso chidziwitso, kuti magetsi "alandire" chipangizo chatsopanocho ndipo asapereke cholakwika. Choncho, muyenera kuchita zotsatirazi:

• yang'anani mipope ya vacuum ya utsi wa gasi recirculation system;
• yang'anani magwiridwe antchito a sensa ya USR ndi dongosolo lonse;
• fufuzani patency ya mzere wa recirculation gasi;
• sinthani sensor ya EGR;
• kuyeretsa tsinde la valve kuchokera ku carbon deposits;
• chotsani cholakwika mu kompyuta ndikuyesa kugwiritsa ntchito chipangizo chatsopanocho.

Koma m'malo chipangizo otchulidwa, tipereka chitsanzo cha m'malo ake pa galimoto "Volkswagen Passat B6". Algorithm ya ntchito idzakhala motere:

1. Lumikizani cholumikizira chapampando wa vavu.
2. Masulani zotsekera ndikuchotsa ma hose ozizira pazitsulo za valve.
3. Chotsani zomangira (ziwiri mbali iliyonse) pazomangira zazitsulo zamachubu opangira kuti azipereka ndi kutulutsa mpweya kuchokera / kupita ku valavu ya EGR.
4. Thupi la valavu limamangiriridwa ku injini yoyatsira mkati pogwiritsa ntchito bulaketi yokhala ndi bawuti imodzi yamagetsi ndi zomangira ziwiri za M8. Chifukwa chake, muyenera kuwamasula, chotsani valavu yakale, kukhazikitsa ina m'malo mwake ndikumangitsa zomangirazo.
5. Lumikizani valavu ku dongosolo la ECU, ndiyeno sinthani pogwiritsa ntchito mapulogalamu (zingakhale zosiyana).

Monga mukuonera, ndondomekoyi ndi yosavuta, ndipo nthawi zambiri, pamakina onse, sizipereka zovuta zazikulu. Ngati mupempha thandizo ku siteshoni, ndiye kuti njira yosinthira kumeneko imawononga pafupifupi 4 ... 5 rubles lero, mosasamala kanthu za mtundu wa galimotoyo. Ponena za mtengo wa valve EGR, umachokera ku 1500 ... 2000 rubles ndi zina zambiri (malingana ndi mtundu wa galimoto).

Zizindikiro za kulephera kwa injini ya dizilo

Valavu ya EGR imayikidwa osati pa mafuta okha, komanso pa injini za dizilo (kuphatikizapo turbocharged). Ndipo chinthu chochititsa chidwi kwambiri m'mitsempha iyi ndi chakuti panthawi yogwiritsira ntchito chipangizo chomwe tatchula pamwambapa, mavuto omwe atchulidwa pamwambapa a injini ya mafuta a injini ya dizilo ndi ofunika kwambiri. Choyamba muyenera kutembenukira ku kusiyana kwa ntchito ya chipangizo pa injini dizilo. Chifukwa chake, apa valavu imatseguka mosagwira ntchito, ikupereka pafupifupi 50% mpweya woyera muzolowera zambiri. Pamene chiwerengero cha kusintha chikuwonjezeka, amatseka ndi kutseka kale katundu pa injini kuyaka mkati. Pamene injini ikugwira ntchito yotentha, valve imatsekedwa kwathunthu.

Mavutowa amagwirizanitsidwa makamaka ndi chakuti ubwino wa mafuta a dizilo apanyumba, kunena mofatsa, umasiya zambiri. Pakugwira ntchito kwa injini yoyaka mkati mwa dizilo, ndi valavu ya EGR, kuchuluka kwa mayamwidwe, ndi masensa omwe amayikidwa mu dongosolo lomwe limaipitsidwa. Izi zingayambitse chimodzi kapena zingapo mwa zizindikiro za "matenda":

• kusakhazikika kwa injini yoyatsira mkati (kugwedezeka, kuthamanga koyandama kosagwira ntchito);
• kutayika kwa mawonekedwe amphamvu (kuthamanga molakwika, kumawonetsa kutsika kwamphamvu ngakhale pamagiya otsika);
• kuchuluka mafuta;
• kuchepa kwa mphamvu;
• Injini yoyaka mkati idzagwira ntchito "zolimba" (pambuyo pake, valavu ya EGR mu injini za dizilo ndiyomwe ikufunika kuti muchepetse kuyendetsa galimoto).

Mwachilengedwe, zomwe zatchulidwazi zitha kukhala zizindikilo za zovuta zina, komabe, tikulimbikitsidwa kuti tiyang'ane gawo lomwe tatchulalo pogwiritsa ntchito matenda apakompyuta. Ndipo ngati kuli kofunikira, yeretsani, m'malo mwake kapena mungosokoneza.

palinso njira imodzi yotulutsira - kuyeretsa zochulukira zomwe zimadya komanso dongosolo lonse lofananira (kuphatikiza chozizira). Chifukwa cha mafuta a dizilo otsika kwambiri, dongosolo lonselo limaipitsidwa kwambiri pakapita nthawi, kotero kuwonongeka komwe kufotokozedwa kungakhale chifukwa cha kuipitsidwa kwa banal, ndipo kudzatha mukamaliza kukonza koyenera. Njirayi tikulimbikitsidwa kuti ichitike kamodzi pazaka ziwiri zilizonse, ndipo makamaka nthawi zambiri.