Momwe mungayang'anire USR

Kuyang'ana dongosolo kumatsikira kuti mudziwe momwe ma valve a EGR akuyendera, sensa yake, komanso zigawo zina za crankcase ventilation system (Exhaust Gas Recirculation). Kuti muwone, woyendetsa adzafunika multimeter yamagetsi yomwe imatha kugwira ntchito mu ohmmeter ndi voltmeter mode, pampu ya vacuum, scanner ya ECU. ndendende momwe mungayang'anire egr zidzadalira chinthu china cha dongosolo. Chiyeso chosavuta kwambiri chogwiritsira ntchito chikhoza kukhala chiwongolero chowoneka bwino cha ntchito pamene mphamvu ikugwiritsidwa ntchito kapena mpweya watulutsidwa.

Kodi dongosolo la EGR ndi chiyani

kuti mumvetse kufotokozera za cheke chaumoyo cha USR, ndikofunika kufotokoza mwachidule za mtundu wanji wa dongosolo, chifukwa chake likufunika komanso momwe limagwirira ntchito. Chifukwa chake, ntchito ya dongosolo la EGR ndikuchepetsa kuchuluka kwa mapangidwe a nitrogen oxide mu mpweya wotuluka. Imayikidwa pamainjini onse a petulo ndi dizilo, kupatula omwe ali ndi turbocharger (ngakhale pali zosiyana). Kuchepetsa kupanga kwa nitrogen oxides kumatheka chifukwa chakuti gawo lina la mpweya wotulutsa mpweya limatumizidwanso ku injini yoyaka mkati kuti ikawotchedwe. Chifukwa cha izi, kutentha kwa chipinda choyaka moto kumachepa, utsi umakhala wopanda poizoni, kuphulika kumachepa ngati nthawi yoyatsira moto ikugwiritsidwa ntchito ndipo mafuta amachepetsedwa.

Machitidwe oyambirira a EGR anali pneumomechanical ndipo ankatsatira EURO2 ndi EURO3 miyezo ya chilengedwe. Ndi kulimba kwa miyezo ya chilengedwe, pafupifupi machitidwe onse a EGR akhala amagetsi. Chimodzi mwa zigawo zikuluzikulu za dongosololi ndi valavu ya USR, yomwe imaphatikizapo sensa yomwe imayendetsa malo a valve yotchulidwa. Chigawo chowongolera zamagetsi chimayang'anira magwiridwe antchito a valavu ya pneumatic pogwiritsa ntchito valavu yowongolera electro-pneumatic. kotero, kuyang'ana USR kumabwera kuti mudziwe momwe ma valve a USR amagwirira ntchito, sensa yake, komanso dongosolo lolamulira (ECU).

Zizindikiro zakuswa

Pali zizindikiro zambiri zakunja zomwe zimasonyeza kuti pali vuto ndi dongosolo, lomwe ndi EGR sensor. Komabe, zizindikiro zomwe zili pansipa zikhoza kusonyeza kuwonongeka kwina kwa injini yoyaka mkati, kotero kuti zowunikira zowonjezera zimafunikira zonse pa dongosolo lonse komanso la valve makamaka. Nthawi zambiri, zizindikiro za valve EGR yosagwira ntchito zidzakhala zizindikiro zotsatirazi:

• Kuchepetsa mphamvu ya injini yoyaka mkati ndikutaya mawonekedwe amphamvu agalimoto. Ndiko kuti, galimoto "si kukoka" pamene akuyendetsa kumtunda ndi kudzaza boma, komanso Imathandizira bwino ndi kuyimitsidwa.
• Kusakhazikika kwa injini yoyaka mkati, "yoyandama" liwiro, makamaka pachopanda pake. Ngati injini ikuyenda motsika kwambiri, imatha kuyima mwadzidzidzi.
• ICE imagulitsa atangoyamba kumene. Zimachitika pamene valavu yatsekedwa ndipo mpweya wotulutsa mpweya umapita kukamwa kwathunthu.
• Kuchuluka kwamafuta. Izi zimayamba chifukwa cha kuchepa kwa vacuum mu kuchuluka kwa mayamwidwe, ndipo chifukwa chake, kulimbikitsanso kusakaniza kwamafuta a mpweya.
• Kupanga zolakwika. Nthawi zambiri, chenjezo la "check engine" pa bolodi limatsegulidwa, ndipo mutatha kufufuza ndi zipangizo zowunikira, mungapeze zolakwika zokhudzana ndi machitidwe a USR, mwachitsanzo, zolakwika p0404, p0401, p1406 ndi ena.

Ngati chimodzi mwazizindikiro zomwe zatchulidwazi chikuwoneka, ndikofunikira kuti mufufuze mwachangu pogwiritsa ntchito scanner yolakwika, ziwonetsetsa kuti vuto lili mu valavu ya USR. Mwachitsanzo, Jambulani Chida Pro Black Edition zimapangitsa kuti zizitha kuwerenga zolakwika, kuwona magwiridwe antchito a masensa osiyanasiyana munthawi yeniyeni komanso kusintha magawo ena.

obd-2 scanner Jambulani Chida Pro Black imagwira ntchito ndi ma protocol am'nyumba, aku Asia, aku Europe ndi America. Mukalumikizidwa ndi chipangizochi kudzera pazida zodziwika bwino kudzera pa Bluetooth kapena Wi-Fi, mumapeza mwayi wofikira pamakina a injini, ma gearbox, ma transmissions, ma ABS, ESP, ndi zina zambiri.

Ndi scanner iyi, mutha kuwona momwe valavu ya solenoid ya vacuum regulator imagwirira ntchito (zambiri kumapeto kwa nkhaniyo). Pokhala ndi chipangizo choterocho, mukhoza kupeza mwamsanga chifukwa chake ndikuyamba kuchichotsa. Kuwona valavu mu garaja ndikosavuta.

Zomwe zimayambitsa kuwonongeka kwa dongosolo la EGR

Pali zifukwa ziwiri zokha zomwe zimayambitsa kusagwira ntchito kwa valve ya USR ndi dongosolo lonse - mpweya wochepa kwambiri umadutsa mu dongosolo ndipo mpweya wochuluka kwambiri umadutsa mu dongosolo. Komanso, zifukwa za izi zikhoza kukhala zochitika zotsatirazi:

• Pa tsinde la valve ya EGR mwaye amapangidwa. Izi zimachitika pazifukwa zachilengedwe. Monga tafotokozera pamwambapa, mpweya wotulutsa mpweya umadutsamo, ndipo mwaye umakhazikika pamakoma a valve, kuphatikizapo tsinde. Chodabwitsa ichi chimakula makamaka pamene makinawa akugwira ntchito mwaukali. ndicho, ndi kuvala kwa injini yoyaka mkati, kuwonjezeka kwa kuchuluka kwa mpweya wa crankcase, kugwiritsa ntchito mafuta otsika kwambiri. Pambuyo pozindikira valavu, nthawi zonse tikulimbikitsidwa kuyeretsa tsinde ndi chotsuka cha carb kapena chotsuka chofananira. Nthawi zambiri, zosungunulira zina (mwachitsanzo, mzimu woyera) kapena acetone wangwiro amagwiritsidwa ntchito pa izi. mutha kugwiritsanso ntchito mafuta a petulo kapena dizilo.
• Kutuluka kwa diaphragm EGR valve. Kuwonongeka uku kumabweretsa mfundo yakuti valavu yomwe yatchulidwayo sichimatsegula mokwanira ndipo sichitseka, ndiko kuti, mpweya wotulutsa mpweya umadutsamo, zomwe zimabweretsa zotsatira zomwe tafotokozazi.
• Njira zamakina a EGR zimaphimbidwa. Izi zimabweretsanso kuti mpweya wotulutsa mpweya komanso mpweya usawombedwe bwino. Kuphika kumachitika chifukwa cha mawonekedwe a mwaye pamakoma a valve ndi / kapena njira zomwe mpweya wotulutsa mpweya umadutsa.
• Dongosolo la EGR linasinthidwa molakwika. Eni magalimoto ena omwe amakumana nawo nthawi zonse kuti chifukwa chogwiritsa ntchito dongosolo la ICE amataya mphamvu, amangozimitsa valavu ya EGR. Komabe, ngati chisankho choterocho chapangidwa, ndiye kuti izi ziyenera kuchitidwa molondola, apo ayi mita ya mpweya idzalandira chidziwitso chakuti mpweya waukulu kwambiri ukuchitika. Izi ndi zoona makamaka pogula galimoto yogwiritsidwa ntchito, pamene mwiniwake watsopano sadziwa kuti valavu ya EGR imayikidwa pa galimoto. Ngati galimoto ili ndi dongosolo loterolo, ndiye kuti m'pofunika kufunsa mwiniwake wa galimotoyo za chikhalidwe chake, komanso funsani ngati dongosolo la USR linasokonezeka.

• Valve ya EGR yokhazikika pa kutseka kwake ndi/kapena kutsegulidwa. Pali njira ziwiri apa. Yoyamba ndi sensa yokhayo yomwe ili yolakwika, yomwe siingathe kutumiza deta yolondola ku chipangizo chowongolera zamagetsi. Chachiwiri ndi mavuto ndi valve yokha. Mwina sichimatsegula kwathunthu kapena sichitseka kwathunthu. Izi nthawi zambiri zimakhala chifukwa cha kuchuluka kwa mwaye pa icho, chomwe chimapangidwa chifukwa cha kuyaka kwamafuta.
• EGR valve yothamanga. Solenoid yogwira ntchito iyenera kupereka kusinthika kosalala kwa tsinde, ndipo molingana ndi izi, sensa iyenera kujambula bwino deta yosintha pa malo a damper. Ngati kusinthako kumachitika mwadzidzidzi, ndiye kuti chidziwitso chofananiracho chimatumizidwa ku kompyuta, ndipo dongosolo palokha siligwira ntchito bwino ndi zotsatira zomwe zafotokozedwa pamwambapa kwa injini yoyaka mkati.
• Pamagalimoto omwe ma valve amaperekedwa stepper drive, zifukwa zothekera zagona mmenemo. motero, galimoto yamagetsi imatha kulephera (mwachitsanzo, kuzungulira kwafupipafupi, kulephera kunyamula), kapena zida zoyendetsa galimoto zimatha kulephera (dzino limodzi kapena angapo pamenepo likusweka kapena kutha kwathunthu).

Kufufuza kwadongosolo la USR

Mwachilengedwe, pamapangidwe osiyanasiyana ndi mitundu yamagalimoto, malo a sensa ya EGR adzakhala osiyana, komabe, ngakhale zikanakhala kuti, msonkhano uwu udzakhala pafupi ndi zambiri zomwe zimadya. Pang'ono ndi pang'ono, imapezeka mu thirakiti loyamwa kapena pa throttle block.

M'mikhalidwe ya garaja, chekecho chiyenera kuyamba ndi kuyang'ana kowonekera. Mwambiri, pali njira ziwiri zodziwira valavu ya EGR - ndikuchotsa komanso popanda kuichotsa. Komabe, ndibwino kuti mufufuze mwatsatanetsatane ndikuchotsa msonkhanowo, chifukwa pambuyo pa cheke, ngati valavu yatsekedwa ndi mafuta oyaka, ikhoza kutsukidwa isanakhazikitsidwenso. Poyamba, tiwona njira zowonera popanda kuthyola magawo amodzi.

Chonde dziwani kuti nthawi zambiri mukamayika valavu yatsopano ya EGR, iyenera kusinthidwa pogwiritsa ntchito mapulogalamu apadera kuti agwire ntchito bwino ndi chipangizo chowongolera zamagetsi.

Momwe mungayang'anire magwiridwe antchito a EGR

Musanayambe kufufuza kwathunthu, muyenera kuonetsetsa kuti valve ikugwira ntchito. Cheke yotere imachitidwa poyambira.

Pakafunika kuyang'ana momwe ma valve a pneumatic akugwirira ntchito, ndikwanira kuyang'ana kugunda kwa tsinde panthawi ya mpweya (munthu m'modzi amatsitsimutsa, wachiwiri akuwoneka). Kapena kukanikiza nembanemba - liwiro liyenera kugwa. kuti muwone valavu ya EGR solenoid, muyenera kugwiritsa ntchito mphamvu molunjika kuchokera ku batri mpaka kuphatikizira ndi kuchotsera cholumikizira, ndikumvetsera kudina kulikonse. Mukachita izi, mutha kupita ku cheke chatsatanetsatane cha EGR.

Kukanikiza valavu

Ndi injini yoyaka mkati yomwe ikuyenda mosagwira ntchito, muyenera kukanikiza pang'ono pa nembanemba. Kutengera mawonekedwe enieni a valavu, imatha kupezeka m'malo osiyanasiyana. Mwachitsanzo, m'galimoto yotchuka ya Daewoo Lanos, muyenera kukanikiza pansi pa mbale, pansi pake pali zodulidwa mu thupi, zomwe mungathe kukanikiza pa nembanemba. Ndiko kuti, kukanikiza sikuchitika pa nembanemba palokha, chifukwa zimatetezedwa ndi thupi, koma pa mbali ya thupi yomwe ili pamwamba pake.

Ngati, mukukankhira mfundo yotchulidwayo, liwiro la injini lidamira ndipo linayamba "kutsamwitsidwa" (liwiro linayamba kugwa), izi zikutanthauza kuti mpando wa valve uli bwino, ndipo kawirikawiri, palibe chomwe chiyenera kukhala. kukonzedwa, kupatula zolinga zodzitetezera (kuti muchite izi, padzakhala kofunikira kumasula valve ya EGR ndikufanana ndikuchita zina zowonjezera zovuta za unit). Komabe, ngati palibe chimene chimachitika pambuyo kukanikiza mwachindunji, ndi injini kuyaka mkati si kutaya liwiro, ndiye kuti nembanemba salinso zolimba, ndiko kuti, dongosolo EGR pafupifupi sagwira ntchito. Choncho, m'pofunika dismantle valavu USR ndi kuchita diagnostics zina za boma la valavu palokha ndi zinthu zina za dongosolo.

Yang'anani valavu

Monga tafotokozera pamwambapa, malo a valve amatha kusiyana m'magalimoto osiyanasiyana, komabe, nthawi zambiri amaikidwa m'dera lakudya. Mwachitsanzo, pagalimoto ya Ford Escape 3.0 V6, imayikidwa pa chitoliro chachitsulo chochokera kuzinthu zambiri. Valavu imatsegulidwa chifukwa cha vacuum yomwe imachokera ku solenoid. Chitsanzo cha kutsimikizira kwina kudzaperekedwa ndendende pa injini yoyaka mkati yagalimoto yomwe yatchulidwa.

Kuti muwone momwe valavu ya EGR ikugwirira ntchito, ndikokwanira kutulutsa payipi kuchokera ku valavu pa liwiro lopanda ntchito la injini yoyaka mkati, momwe vacuum (vacuum) imaperekedwa. Ngati pali vacuum mpope mwadzina kupezeka, ndiye inu mukhoza kulumikiza ndi dzenje valavu ndi kupanga vacuum. Ngati valavu ikugwira ntchito, injini yoyaka mkati imayamba "kutsamwitsa" ndi kugwedezeka, ndiko kuti, liwiro lake lidzayamba kugwa. M'malo mwa pampu ya vacuum, mutha kungolumikiza payipi ina ndikupanga vacuum mwa kuyamwa mpweya ndi pakamwa panu. Zotsatira zake ziyenera kukhala zofanana. Ngati injini yoyaka mkati ikupitilizabe kugwira ntchito moyenera, ndiye kuti valavuyo imakhala yolakwika. Ndikoyenera kumasula kuti mufufuze mwatsatanetsatane. Zikhale momwemo, kukonzanso kwake kwina kuyenera kuchitika osati pampando wake, koma malinga ndi malo ogulitsira magalimoto (garaja).

Onani solenoid

Solenoid ndi mphamvu yamagetsi yomwe imalola kuti madzi azitha kudutsamo. Solenoid imasintha voteji yomwe imadutsamo pogwiritsa ntchito pulse-width modulation (PWM). Mphamvu yamagetsi imasintha panthawi yogwira ntchito, ndipo ichi ndi chizindikiro chogwiritsira ntchito vacuum ku valve ya EGR. Chinthu choyamba kuchita poyang'ana solenoid ndikuwonetsetsa kuti vacuum ili ndi vacuum yabwino. Timapereka chitsanzo chotsimikizira zagalimoto yomweyo ya Ford Escape 3.0 V6.

Chinthu choyamba kuchita ndikudula machubu ang'onoang'ono pansi pa solenoid, pambuyo pake muyenera kuyambitsa injini yoyaka mkati. Chonde dziwani kuti machubu ayenera kuchotsedwa mosamala kuti asathyole zida zomwe akuyenera! Ngati vacuum pa imodzi mwa machubu ali bwino, ndiye kuti idzakhala yomveka, nthawi zambiri, mukhoza kuika chala chanu pa chubu. Ngati palibe vacuum, matenda owonjezera amafunikira. Kuti muchite izi, padzakhalanso kofunikira kutulutsanso valavu ya USR pampando wake kuti mudziwe zambiri.

Pambuyo pake, ndikofunikira kuyang'ana gawo lamagetsi, ndiko kuti, ndikofunikira kuyang'ana mphamvu ya solenoid. Kuti muchite izi, muyenera kuchotsa chip kuchokera kuzinthu zomwe zatchulidwa. Pali mawaya atatu - chizindikiro, mphamvu ndi nthaka. Pogwiritsa ntchito ma multimeter osinthidwa kukhala DC voltage kuyeza mode, muyenera kuyang'ana mphamvu. Apa kafukufuku wina wa multimeter amayikidwa pa kukhudzana kopereka, chachiwiri - pansi. Ngati pali mphamvu, multimeter idzawonetsa mtengo wamagetsi okwana pafupifupi 12 volts. Panthawi imodzimodziyo, ndi bwino kuyang'ana kukhulupirika kwa waya wothamanga. Izi zitha kuchitikanso pogwiritsa ntchito multimeter, koma kusinthira ku "dialing" mode. Pa Ford Escape 3.0 V6 yomwe yatchulidwa ili ndi zotsekemera zofiirira, ndipo polowetsa ECU ili ndi nambala 47 komanso zofiirira. Moyenera, mawaya onse ayenera kukhala osasunthika komanso okhala ndi intact intact. Ngati mawaya athyoka, ndiye kuti ayenera kusinthidwa ndi atsopano. Ngati kusungunula kwawonongeka, ndiye kuti mutha kuyesa kuyiyika ndi tepi yamagetsi kapena tepi yochepetsera kutentha. Komabe, njirayi ndi yoyenera ngati kuwonongeka kuli kochepa.

Pambuyo pake, muyenera kuyang'ana kukhulupirika kwa waya wa solenoid palokha. Kuti muchite izi, mutha kusintha ma multimeter kumayendedwe opitilira kapena kuyeza kukana kwamagetsi. ndiye, ndi ma probe awiri, motsatana, gwirizanitsani ndi zotuluka ziwiri za waya wa solenoid. Mtengo wotsutsa pazida zosiyanasiyana ukhoza kukhala wosiyana, koma Khalani momwe zingakhalire, ziyenera kukhala zosiyana ndi zero komanso zopanda malire. Kupanda kutero, pali kagawo kakang'ono kapena kupuma kozungulira, motsatana.

Kuwona sensor ya EGR

Ntchito ya sensa ndiyo kulemba kusiyana kwapakati pa gawo limodzi ndi lina la valve, motero, imangotumiza chidziwitso ku kompyuta ponena za malo a valve - ndi yotseguka kapena yotsekedwa. Choyamba, muyenera kuyang'ana kukhalapo kwa mphamvu pa izo.

Sinthani multimeter kukhala DC voltage kuyeza mode. Lumikizani imodzi mwazofufuza kuti waya Nambala 3 pa sensa, ndi kafukufuku wachiwiri pansi. kenako muyenera kuyambitsa injini. Ngati zonse zili bwino, ndiye kuti voteji pakati pa ma probe awiri omwe asonyezedwa ayenera kukhala ofanana ndi 5 volts.

kenako muyenera kuyang'ana voteji pa mpukutu waya No. Mu boma pamene injini kuyaka mkati si kutenthetsa mmwamba (dongosolo EGR sikugwira ntchito), voteji ayenera kukhala pafupifupi 1 Volts. Mukhoza kuyeza mofanana ndi waya wamagetsi. Ngati pampu ya vacuum ilipo, ndiye kuti vacuum ingagwiritsidwe ntchito pa valve. Ngati sensa ikugwira ntchito, ndipo idzakonza izi, ndiye kuti mphamvu yamagetsi pa waya wothamanga idzawonjezeka pang'onopang'ono. Pamagetsi pafupifupi 0,9 volts, valavu iyenera kutsegulidwa. Ngati pa mayeso voteji si kusintha kapena kusintha sanali linear, ndiye, mwina, sensa ndi kunja dongosolo ndipo m`pofunika kuchita diagnostics zina.

Ngati galimotoyo itayika pambuyo pa ntchito yaifupi ya injini, ndiye kuti mukhoza kumasula valve ya USR ndikuyitsamira ndikuyichotsanso kuti muwone momwe injini yoyaka mkati imachitira - ngati mutachotsa valavu kuchokera ku crankcase, utsi wambiri umatuluka. ndipo injini yoyaka mkati imayamba kugwira ntchito mofanana, mpweya wabwino kapena valavu yokha ndi yolakwika. Macheke owonjezera akufunika apa.

Kuchotsa mayeso

Ndi bwino kuyang'ana valve ya EGR ikachotsedwa. Izi zipangitsa kuti zitheke kuwona komanso mothandizidwa ndi zida kuyesa momwe zilili. Chinthu choyamba kuchita ndikuwona ngati zikugwira ntchito. Ndipotu, valavu ndi solenoid (coil), yomwe iyenera kuperekedwa ndi 12 volts yachindunji, monga momwe magetsi amayendera m'galimoto.

Chonde dziwani kuti mapangidwe a ma valve angasiyane, ndipo motero, manambala a ma contact omwe akufunika kulimbikitsidwa adzakhalanso osiyana, motero, palibe yankho lachilengedwe pano. Mwachitsanzo, pagalimoto ya Volkswagen Golf 4 APE 1,4, pali zikhomo zitatu pa valve yokhala ndi nambala 2; zinayi; 4. Mphamvu yamagetsi iyenera kugwiritsidwa ntchito pazigawo za 6 ndi 2.

Ndikoyenera kukhala ndi gwero lamagetsi la AC pamanja, chifukwa pochita (m'galimoto) mphamvu yowongolera imasiyanasiyana. Choncho, mwachizolowezi, valavu imayamba kutsegula pa 10 volts. Mukachotsa ma volts 12, ndiye kuti imatseka (tsinde lidzalowa mkati). Pamodzi ndi izi, ndikofunikira kuyang'ana kukana kwamagetsi kwa sensor (potentiometer). Ndi sensa yogwira ntchito pa valve yotseguka, kukana pakati pa zikhomo 2 ndi 6 kuyenera kukhala pafupifupi 4 kOhm, ndi pakati pa 4 ndi 6 - 1,7 kOhm. Pamalo otsekedwa a valve, kukana kofanana pakati pa zikhomo 2 ndi 6 kudzakhala 1,4 kOhm, ndi pakati pa 4 ndi 6 - 3,2 kOhm. Kwa magalimoto ena, ndithudi, makhalidwe adzakhala osiyana, koma malingaliro adzakhala chimodzimodzi.

Pamodzi ndikuwona momwe solenoid ikuyendera, ndikofunikira kuyang'ana luso la valve. Monga tafotokozera pamwambapa, mwaye (zopangidwa ndi kuyaka kwamafuta) zimaunjikana pamwamba pake pakapita nthawi, ndikukhazikika pamakoma ake ndi ndodo. Chifukwa cha izi, kuyenda kosalala kwa valve ndi tsinde kumatha kuwonongeka. Ngakhale kulibe mwaye wambiri kumeneko, amalimbikitsidwabe kuti azitchinjiriza kuti azitsuka mkati ndi kunja ndi chotsuka.

Kutsimikizira kwa mapulogalamu

Njira imodzi yokwanira komanso yabwino yodziwira dongosolo la EGR ndikugwiritsa ntchito mapulogalamu omwe adayikidwa pa laputopu (piritsi kapena zida zina). Choncho, magalimoto opangidwa ndi nkhawa VAG, imodzi mwa mapulogalamu otchuka kwambiri matenda ndi VCDS kapena Russian - "Vasya Diagnostic". Tiyeni tiwone mwachangu ma algorithm oyesera a EGR ndi pulogalamuyi.

EGR fufuzani mu pulogalamu ya Vasya Diagnost

Gawo loyamba ndikulumikiza laputopu ku ICE electronic control unit ndikuyendetsa pulogalamu yoyenera. ndiye muyenera kulowa gulu lotchedwa "ICE Electronics" ndi menyu "Custom Magulu". Pakati pa ena, pansi pa mndandanda wa tchanelo, pali njira ziwiri zowerengera 343 ndi 344. Yoyamba imatchedwa "EGR Vacuum Regulator Solenoid Valve; actuation" ndipo yachiwiri ndi "EGR Solenoid Valve; mtengo weniweni".

Mwachizoloŵezi, izi zikutanthauza kuti malinga ndi njira 343, munthu akhoza kuweruza pa mtengo wanji womwe ECU wasankha kutsegula kapena kutseka valavu ya EGR mu chiphunzitso. Ndipo njira 344 ikuwonetsa zomwe valavu imagwira ntchito. Momwemo, kusiyana pakati pa zizindikiro izi mu mphamvu ziyenera kukhala zochepa. Chifukwa chake, ngati pali kusiyana kwakukulu pakati pa zikhalidwe mu njira ziwiri zomwe zasonyezedwa, ndiye kuti valavu ilibe dongosolo. Ndipo kusiyana kwakukulu m'mawerengedwe oyenerera, valavu imawonongeka kwambiri. Zifukwa za izi ndizofanana - valve yonyansa, nembanemba sichigwira, ndi zina zotero. Chifukwa chake, pogwiritsa ntchito zida zamapulogalamu, ndizotheka kuwunika momwe valavu ya EGR ilili popanda kuichotsa pampando wake pa injini yoyaka mkati.

Pomaliza

Kuyang'ana dongosolo la EGR sikovuta kwenikweni, ndipo ngakhale woyendetsa novice amatha kuchita. Ngati valavu ikulephera pazifukwa zina, chinthu choyamba kuchita ndikusanthula kukumbukira kwa ECU kwa zolakwika. m'pofunikanso kuswa ndi kuyeretsa. Ngati sensa ili kunja kwa dongosolo, sikukonzedwa, koma m'malo mwake ndi yatsopano.