Utsi dongosolo mpweya recirculation

Ndi zofunikira zowonjezera zachilengedwe, machitidwe owonjezera amawonjezedwa pang'onopang'ono ku galimoto yamakono, yomwe imasintha njira zogwiritsira ntchito injini yoyaka mkati, kusintha mawonekedwe a osakaniza a mpweya-mafuta, kuchepetsa mankhwala a hydrocarbon omwe ali mu utsi, ndi zina zotero.

Zida zoterezi zikuphatikizapo othandizira kusintha, wotsatsa, AdBlue ndi machitidwe ena. Tanena kale za iwo mwatsatanetsatane. Tsopano tiyang'ana pa dongosolo linanso, lomwe woyendetsa galimoto aliyense amayenera kuyang'anira thanzi lake. Uku ndikubwezeretsanso gasi wotuluka. Tiyeni tiwone momwe kujambula kwadongosolo kumawonekera, momwe kumagwirira ntchito, ndi mitundu yanji yomwe ilipo, komanso ubwino wake.

Kodi galimoto gasi recirculation dongosolo

M'mabuku aukadaulo komanso mafotokozedwe agalimoto, dongosololi limatchedwa EGR. Kumasulira kwachidule ichi kuchokera ku Chingerezi kwenikweni kumatanthauza "kutulutsa mpweya wotuluka". Ngati simulowa mwatsatanetsatane zakusintha kosiyanasiyana kwamakina, kwenikweni, iyi ndi valavu yobwezeretsanso yomwe imayikidwa pa chitoliro cholumikizana ndi mayamwidwe ndi kutulutsa.

Dongosololi limayikidwa pamainjini onse amakono okhala ndi zida zowongolera zamagetsi. Zamagetsi zimakupatsani mwayi wosinthira molondola njira ndi njira zosiyanasiyana mugawo lamagetsi, komanso machitidwe omwe ntchito yawo imagwirizana kwambiri ndi magwiridwe antchito a injini yoyaka moto.

Panthawi ina, EGR flap imatsegula pang'ono, chifukwa chomwe mpweya umalowa pang'onopang'ono mu dongosolo la injini (kuti mudziwe zambiri za chipangizo ndi mfundo ya ntchito yake, werengani. kubwereza kwina). Zotsatira zake, mpweya wabwino umasakanikirana pang'ono ndi mpweya wotulutsa mpweya. Pachifukwa ichi, funso limadzuka: chifukwa chiyani mukufunikira mpweya wotulutsa mpweya mu dongosolo la kudya, ngati mpweya wokwanira umafunika kuti injini igwire bwino ntchito? Ngati pali mpweya wina wosawotchedwa mu mpweya wotuluka, kafukufuku wa lambda akhoza kusonyeza izi (zikufotokozedwa mwatsatanetsatane. apa). Tiyeni tiyese kuthana ndi zomwe zikuwoneka ngati zotsutsana.

Cholinga cha dongosolo lotulutsa mpweya wotulutsa mpweya

Si chinsinsi kwa aliyense kuti pamene mafuta ndi mpweya wothinikizidwa mu silinda zimayaka, osati mphamvu yabwino yokha yomwe imatulutsidwa. Njirayi imatsagana ndi kutulutsidwa kwa zinthu zambiri zapoizoni. Zowopsa kwambiri mwa izi ndi nitrogenous oxides. Pang'onopang'ono amamenyana ndi chosinthira chothandizira, chomwe chimayikidwa mu galimoto yotulutsa mpweya (ndi zinthu ziti zomwe dongosololi lili nazo, ndipo limagwira ntchito bwanji? payokha).

Kuthekera kwina kochepetsera zomwe zili muzinthu zotere mu utsi ndikusintha kapangidwe kakusakaniza kwamafuta a mpweya. Mwachitsanzo, gawo loyang'anira zamagetsi limachulukitsa kapena kuchepetsa kuchuluka kwa mafuta omwe amabadwira mumpweya watsopano. Izi zimatchedwa MTC umphawi / kulemeretsa.

Kumbali inayi, mpweya wochuluka umalowa mu silinda, umakwera kwambiri kutentha kwa mpweya / mafuta osakaniza. Panthawi imeneyi, nayitrogeni amamasulidwa ku kuphatikiza kwa kutentha kwa mafuta a petulo kapena dizilo komanso kutentha kwambiri. Mankhwalawa amalowa mu okosijeni ndi okosijeni, omwe analibe nthawi yoyaka. Komanso, kuchuluka kwa mapangidwe a oxides amenewa kumagwirizana mwachindunji ndi kutentha kwa malo ogwira ntchito.

Cholinga cha recirculation system ndikuchepetsa kuchuluka kwa oxygen mu gawo latsopano la mpweya. Chifukwa cha kukhalapo kwa mpweya wochepa wotulutsa mpweya wopangidwa ndi VTS, kuziziritsa pang'ono kwa njira yoyaka moto m'masilinda kumaperekedwa. Pankhaniyi, mphamvu ya ndondomeko yokhayo sikusintha, popeza voliyumu yomweyi ikupitirizabe kulowa mu silinda, yomwe imakhala ndi mpweya wochuluka womwe umafunika kuyatsa mafuta.

Kutuluka kwa gasi kumatengedwa ngati inert, chifukwa ndi chifukwa cha kuyaka kwa HTS. Pachifukwa ichi, palokha, sikungathenso kuyaka. Ngati kuchuluka kwa mpweya wotulutsa mpweya kumasakanizidwa mu gawo latsopano la mpweya wamafuta osakaniza, kutentha kwakuya kumachepa pang'ono. Chifukwa cha izi, njira ya nitrogen oxidation idzakhala yocheperako. Zowona, kubwereza kumachepetsa pang'ono mphamvu yamagetsi, koma galimotoyo imakhalabe ndi mphamvu zake. Kuipa kumeneku ndi kochepa kwambiri kotero kuti n'kosatheka kuzindikira kusiyana kwa mayendedwe wamba. Chifukwa chake n'chakuti ndondomekoyi sikuchitika pa mphamvu modes ya injini kuyaka mkati, pamene liwiro limatuluka. Amangogwira ntchito pamayendedwe otsika ndi apakatikati (mumagawo amafuta) kapena osagwira ntchito komanso otsika rpm (ngati injini za dizilo).

Chifukwa chake, cholinga cha dongosolo la EGR ndikuchepetsa kawopsedwe ka utsi. Chifukwa cha izi, galimotoyo ili ndi mwayi wochuluka wokwanira mu ndondomeko ya chilengedwe. Amagwiritsidwa ntchito pa injini iliyonse yamakono yoyaka mkati, mosasamala kanthu kuti ndi petulo kapena dizilo. Chenjezo lokhalo ndikuti dongosololi siligwirizana ndi mayunitsi ena omwe ali ndi ma turbocharger.

General ntchito mfundo za utsi gasi recirculation dongosolo

Ngakhale lero pali mitundu ingapo ya machitidwe omwe kugwirizana kwa mpweya wotulutsa mpweya kumalowa kudzera mu valve ya pneumatic ikuchitika, ali ndi mfundo yofanana yogwiritsira ntchito.

Valve sichimatseguka nthawi zonse. Injini yozizira ikayamba, imagwira ntchito mopanda pake, komanso ikafika pa liwiro lalikulu la crankshaft, throttle iyenera kukhala yotsekedwa. Munjira zina, dongosololi lidzagwira ntchito, ndipo chipinda choyaka cha gulu lililonse la silinda-pistoni chidzalandira pang'ono zinthu zoyaka mafuta.

Ngati chipangizocho chidzagwira ntchito pa liwiro lopanda pake la injini kapena pakufika kutentha kwake (zomwe ziyenera kukhala, werengani apa), gawolo lidzakhala losakhazikika. Kuchita bwino kwambiri kwa valve ya EGR kumatheka kokha pamene injini ikuyenda pafupi ndi rpm. Munjira zina, kuchuluka kwa nitrogen oxides kumakhala kotsika kwambiri.

Pamene injini ikuwotha, kutentha kwa moto m'zipinda sikuli kokwera kwambiri kotero kuti kuchuluka kwa nitrous oxides kumapangidwa, ndipo kubwereranso pang'ono kwa mpweya ku ma silinda sikofunikira. Zomwezo zimachitika pa liwiro lotsika. Injini ikafika pa liwiro lalikulu, iyenera kukhala ndi mphamvu zambiri. Ngati valavu imayambitsidwa, idzasokoneza, choncho, mumayendedwe awa, dongosololi lidzakhala lopanda ntchito.

Mosasamala za mtundu wa machitidwe, chinthu chofunika kwambiri mwa iwo ndi chopukutira chomwe chimalepheretsa kupeza mpweya wotulutsa mpweya ku dongosolo lodyera. Popeza kutentha kwakukulu kwa mpweya wa gasi kumatenga voliyumu yochulukirapo kuposa analogue yokhazikika, mpweya wotulutsa mpweya uyenera kuziziritsidwa kuti kuyaka kwa HTS kusachepetse. Pachifukwa ichi, pali chowonjezera chozizira kapena intercooler chogwirizana ndi injini yozizira. Dera mumtundu uliwonse wagalimoto litha kukhala losiyana, koma limakhala ndi radiator yomwe imakhazikitsa njira yosungira kutentha kwa chipangizocho.

Ponena za injini za dizilo, valavu mkati mwake imatsegulidwa pa XX. Vacuum mu dongosolo lolowetsamo imakokera mpweya wotuluka mu masilinda. Mu mode iyi, injini amalandira pafupifupi 50 peresenti ya mpweya utsi (poyerekeza mpweya wabwino). Pamene liwiro likuwonjezeka, damper actuator imasunthira pang'onopang'ono kumalo otsekedwa. Umu ndi momwe dizilo imagwirira ntchito.

Ngati tilankhula za gawo la petulo, ndiye kuti kuchuluka kwa mpweya wotulutsa mpweya m'magawo obwera kumadzaza ndi kusagwira bwino ntchito kwa injini yoyaka moto. Choncho, mu nkhani iyi, ntchito dongosolo ndi osiyana pang'ono. Valavu imatsegulidwa injini ikafika pa liwiro lapakati. Komanso, zomwe zili mu gawo latsopano la BTC siziyenera kupitirira 10 peresenti.

Dalaivala amaphunzira za kusinthika kolakwika ndi chizindikiro cha Check Engine pa dashboard. Nawa kuwonongeka kwakukulu komwe dongosolo lotere lingakhale nalo:

• Chojambulira chotsegula chaphulika chasweka. Nthawi zambiri, kupatula mulingo wolakwika komanso babu yomwe imayatsa paudongo, palibe chomwe chimachitika.
• Kuwonongeka kwa valve kapena sensa yake. Chifukwa chachikulu cha vuto ili ndikulumikizana kosalekeza ndi mpweya wotentha wotuluka m'galimoto. Kutengera ndi mtundu wa dongosolo, kuwonongeka kwa chinthu ichi kumatha kutsagana ndi kuchepa kapena kulemetsedwa kwa MTC. Ngati injini imagwiritsa ntchito makina ophatikizika okhala ndi masensa monga MAF ndi MAP, ndiye kuti osagwira ntchito, osakaniza amakhala olemera kwambiri, ndipo pa liwiro lalikulu la crankshaft, BTC ndi yowonda kwambiri.

Dongosolo likalephera, mafuta a petulo kapena dizilo amawotcha bwino, chifukwa cha zovuta zomwe zimachitika, mwachitsanzo, moyo wogwirira ntchito wa chothandizira umachepa kwambiri. Umu ndi momwe machitidwe agalimoto amawonekera pochita ndi njira yolakwika yobwezera gasi wotulutsa mpweya.

Kuti akhazikitse idling, gawo lowongolera limasinthira magwiridwe antchito amafuta ndi kuyatsa (ngati ndi gawo lamafuta). Komabe, sangathe kulimbana ndi ntchitoyi mumayendedwe osakhalitsa, chifukwa kutsegula phokoso kumawonjezera mpweya, ndipo kuthamanga kwa mpweya kumakwera kwambiri, chifukwa chomwe mpweya wotulutsa mpweya umadutsa pamtunda wotseguka.

Chotsatira chake, injiniyo sichilandira kuchuluka kwa okosijeni komwe kumafunikira kuti mafuta azitha kuyaka kwathunthu. Malinga ndi kuchuluka kwa kuwonongeka, galimoto akhoza kugwedezeka, pakhoza kukhala misfire, kusakhazikika kapena kusowa kwathunthu XX, injini kuyaka mkati angayambe bwino, etc.

Kupaka mafuta m'mist kumapezeka mumitundu yosiyanasiyana ya unit. Ndi kukhudzana kwake kosalekeza ndi mipweya yotentha yotentha, malo amkati mwazinthu zambiri, ma valve, kunja kwa majekeseni ndi ma spark plugs adzaphimbidwa ndi carbon deposits. Nthawi zina, kuyatsa kwamafuta kumatha kuchitika BTC isanalowe mu silinda (ngati mukanikiza chopondapo mwamphamvu).

Ponena za liwiro losakhazikika lopanda ntchito, ngati valve ya EGR yalephera, imatha kutha kwathunthu, kapena imatha kukwera mpaka malire ovuta. Ngati galimoto ali okonzeka ndi kufala basi, ndiye woyendetsa mu nkhani yachiwiri posachedwapa adzawononga ndalama basi kukonza kufala. Popeza wopanga aliyense amagwiritsa ntchito njira yobwezeretsanso mpweya wotulutsa mpweya m'njira yakeyake, kusagwira ntchito kwadongosololi kumakhala kwamunthu payekha. Komanso, zotsatira za izi zimakhudzidwa mwachindunji ndi luso la unit mphamvu, poyatsira dongosolo, ndi dongosolo mafuta.

Kuyimitsa makinawo kumapangitsa injini ya dizilo kugwira ntchito molimbika mosagwira ntchito. Injini ya petulo imakhala ndi mafuta osakwanira. Nthawi zina, chothandizira chimatseka mwachangu chifukwa cha kuchuluka kwa mwaye komwe kumawoneka chifukwa chogwiritsa ntchito kusakaniza kolakwika kwamafuta a mpweya. Chifukwa chake ndi chakuti magetsi a galimoto yamakono amapangidwira dongosolo ili. Kuti muteteze gawo lowongolera kuti lisinthidwenso, muyenera kulembanso, monga momwe zilili ndi chip tuning (werengani za njirayi. apa).

Mitundu ya recirculation system

M'galimoto yamakono, imodzi mwa mitundu itatu ya machitidwe a EGR ikhoza kukhazikitsidwa pamagetsi:

1. Mogwirizana ndi Euro4 eco-standard. Iyi ndi dongosolo lapamwamba kwambiri. Chophimbacho chimakhala pakati pa ma intake ndi manifolds otulutsa. Potuluka mu injini, makinawo amaima kutsogolo kwa turbine. Pankhaniyi, valve electro-pneumatic imagwiritsidwa ntchito (kale, analogue ya pneumatic-mechanical inagwiritsidwa ntchito). Zochita za ndondomeko yotereyi zili motere. Supottle chatsekedwa - injini ikugwira ntchito. Vacuum mu kapepala kameneka kamakhala kakang'ono, choncho chotchinga chimatsekedwa. Mukasindikiza accelerator, vacuum yomwe ili m'kati mwake imawonjezeka. Chotsatira chake, kupanikizika kwa msana kumapangidwa mu dongosolo la kudya, chifukwa chomwe valve imatsegula kwathunthu. Kuchuluka kwa mpweya wotulutsa mpweya kumabwezeretsedwa ku masilindala. Pankhaniyi, turbine sigwira ntchito, chifukwa mpweya wotulutsa mpweya ndi wochepa, ndipo sangathe kupota chopondera chake. Mavavu a pneumatic samatseka atatsegulidwa mpaka liwiro la mota litsike pamtengo woyenerera. M'machitidwe amakono, mapangidwe obwezeretsanso amaphatikizapo ma valve owonjezera ndi masensa omwe amasintha ndondomekoyi motsatira njira zamagalimoto.
2. Mogwirizana ndi Euro5 eco-standard. Dongosololi ndilotsika kwambiri. Pankhaniyi, mapangidwewo amasinthidwa pang'ono. Damper ili kuseri kwa fyuluta ya particulate (za chifukwa chake ikufunika, ndi momwe imagwirira ntchito, werengani. apa) mu dongosolo lotayira, ndi kudya - kutsogolo kwa turbocharger. Ubwino wa kusinthidwa koteroko ndikuti mpweya wotulutsa mpweya umakhala ndi nthawi yoziziritsa pang'ono, ndipo chifukwa chodutsa mu fyuluta, amachotsedwa mwaye ndi zigawo zina, chifukwa chomwe chipangizocho mu dongosolo lapitalo chimakhala ndi moyo waufupi wogwira ntchito. Dongosololi limapereka mpweya wotulutsa mpweya wobwereranso mumayendedwe a turbocharging, popeza mpweyawo umadutsa mu choyikapo cha turbine ndikuuzungulira. Chifukwa cha chipangizo choterocho, dongosolo sikuchepetsa mphamvu ya injini (monga oyendetsa ena amati, "sikutsamwitsa" injini). Mumitundu yambiri yamagalimoto amakono, fyuluta ya particulate ndi chothandizira zimasinthidwanso. Chifukwa chakuti valavu ndi sensa yake zili kutali ndi galimoto yodzaza ndi thermally unit, iwo nthawi zambiri amalephera pambuyo njira zingapo zoterezi. Panthawi yokonzanso, valavu idzatsekedwa pamene injini ikufuna mafuta owonjezera ndi mpweya wochuluka kuti iwonjezere kutentha kwa DPF kwakanthawi ndikuwotcha mwaye mmenemo.
3. Mogwirizana ndi Euro6 eco-standard. Iyi ndi dongosolo lophatikizana. Mapangidwe ake ali ndi zinthu zomwe zili mbali ya zipangizo zomwe tafotokozazi. Popeza iliyonse ya machitidwewa imagwira ntchito mwa njira yake yokha, kulowetsedwa kuchokera ku injini yoyaka moto ya injini yoyaka mkati kumakhala ndi ma valve amitundu yonse ya njira zobwezeretsanso. Pamene kupanikizika kwa madyedwe kumachepa, siteji yofanana ndi chizindikiro cha Euro 5 (kutsika kochepa) imayambika, ndipo pamene katunduyo akuwonjezeka, sitejiyi imatsegulidwa, yomwe imagwiritsidwa ntchito m'magalimoto omwe amagwirizana ndi eco standard Euro 4. high pressure).

Umu ndi momwe machitidwe amagwirira ntchito omwe ali amtundu wa kubwereza kwakunja (njirayo imachitika kunja kwa gawo lamagetsi). Kuphatikiza apo, pali mtundu womwe umapereka mpweya wotuluka mkati. Imatha kutulutsa zina mwazotulutsa ngati zikulowa munjira zambiri. Izi zokha zimatsimikiziridwa ndikugwedeza pang'ono ma camshafts. Pachifukwa ichi, chosinthira gawo chimayikidwanso mu makina ogawa gasi. Izi, munjira ina yogwiritsira ntchito injini yoyaka mkati, imasintha pang'ono nthawi ya valve (chomwe ili, ndi phindu lanji la injini, ikufotokozedwa. payokha).

Pankhaniyi, mavavu onse a silinda amatsegulidwa panthawi inayake. Kuchuluka kwa mpweya wotulutsa mpweya mu gawo latsopano la BTC kumadalira kutalika kwa ma valves otseguka. Panthawiyi, cholowera chimatsegulidwa pisitoni isanafike pakatikati pakufa ndipo chotulukacho chimatseka TDC ya pisitoni isanachitike. Chifukwa cha nthawi yayifupi iyi, utsi wochepa umalowa m'dongosolo lazakudya kenako umalowetsedwa mu silinda pomwe pisitoni ikupita ku BDC.

Ubwino wa kusinthidwa uku ndi kugawa kwambiri ngakhale mpweya utsi mu masilindala, komanso liwiro la dongosolo ndi apamwamba kwambiri kuposa zinachitikira recirculation kunja.

Machitidwe amakono a recirculation amaphatikizapo radiator yowonjezera, kutentha kwa kutentha komwe kumalola kuti mpweya wotulutsa mpweya ukhale wokhazikika mwamsanga usanalowe m'kati mwa njira. Sizingatheke kufotokoza ndondomeko yeniyeni ya kachitidwe kameneka, chifukwa opanga makina amagwiritsira ntchito ndondomekoyi molingana ndi ziwembu zosiyanasiyana, ndipo zowonjezera zowonjezera zikhoza kupezeka mu chipangizocho.

Ma valve obwereza gasi

Payokha, ziyenera kutchulidwa za mitundu ya ma valve a EGR. Amasiyana wina ndi mzake m’mene amalamuliridwa. Malinga ndi gulu ili, njira zonse zimagawidwa m'magulu awiri:

• Ma valve a pneumatic. Chipangizo chamtunduwu sichimagwiritsidwanso ntchito kawirikawiri. Iwo ali vacuum mfundo ntchito. Chophimbacho chimatsegulidwa ndi vacuum yomwe imapangidwa mu thirakiti lolowera.
• Electro-pneumatic. Electrovalve yoyendetsedwa ndi ECU imalumikizidwa ndi valavu ya pneumatic mu dongosolo loterolo. Zamagetsi zapa board zimasanthula mitundu ya mota, motero zimasintha magwiridwe antchito a damper. Chigawo chowongolera zamagetsi chimalandira zidziwitso kuchokera ku masensa a kutentha ndi kuthamanga kwa mpweya, kutentha kozizira, etc. ndipo, malingana ndi deta yolandiridwa, imayendetsa galimoto yamagetsi ya chipangizocho. Chodabwitsa cha ma valve oterowo ndikuti damper mkati mwake imakhala yotseguka kapena yotsekedwa. Vacuum mu dongosolo lolowetsamo likhoza kupangidwa ndi pampu yowonjezera ya vacuum.
• Zamagetsi. Ichi ndi chitukuko chaposachedwapa cha makina. Ma valve a solenoid amagwira ntchito mwachindunji kuchokera kuzizindikiro zochokera ku ECU. Ubwino wa kusinthidwa uku ndi ntchito yawo yosalala. Zimatsimikiziridwa ndi malo atatu a damper. Izi zimathandiza kuti makinawo azitha kusintha mlingo wa gasi wotulutsa mpweya molingana ndi injini yoyaka mkati. Dongosolo siligwiritsa ntchito vacuum mu njira yolowera kuti liwongolere valavu.

Ubwino wa recirculation system

Mosiyana ndi zomwe anthu ambiri amakhulupirira kuti galimoto yothandizana ndi chilengedwe siipindulitsa pa powertrain, kubwereza kwa gasi wotulutsa mpweya kuli ndi ubwino wake. Wina sangamvetse chifukwa chake kukhazikitsa dongosolo lomwe limachepetsa mphamvu ya injini yoyaka mkati, ngati zowonjezera zowonjezera zitha kugwiritsidwa ntchito (koma pakadali pano, makina otulutsa amakhala "golide", popeza zitsulo zamtengo wapatali zimagwiritsidwa ntchito poletsa zinthu zoopsa) . Pachifukwa ichi, eni ake a makina otere nthawi zina amaikidwa kuti aletse dongosolo. Ngakhale zikuwoneka kuti ndizoyipa, kubwereza kwa gasi wotulutsa kumakhala kopindulitsa pagawo lamagetsi.

Nazi zifukwa zina zomwe zimachititsa izi:

1. Mu injini yamafuta, chifukwa cha octane otsika (zomwe zili, ndipo gawo ili limakhudza chiyani pa injini yoyaka mkati, werengani payokha) Kuphulika kwamafuta kumachitika nthawi zambiri. Kukhalapo kwa vuto ili kudzawonetsedwa ndi sensa ya dzina lomwelo, lomwe likufotokozedwa mwatsatanetsatane apa... Kukhalapo kwa kachitidwe ka recirculation kumachotsa zotsatira zoyipa izi. Ngakhale zikuwoneka zosemphana, kukhalapo kwa valavu ya egr, m'malo mwake, kumapangitsa kuti muwonjezere mphamvu ya unit, mwachitsanzo, ngati muyika nthawi yoyatsira yosiyana yoyatsira kale.
2. Chotsatira chotsatira chimagwiranso ntchito ku injini zamafuta. Pakuthamanga kwa ma ICE otere, nthawi zambiri pamakhala kutsika kwakukulu, chifukwa chake pali kuchepa pang'ono kwa mphamvu. Kugwira ntchito kwa recirculation kumapangitsanso kuchepetsa izi.
3. Koma injini dizilo mu mode XX dongosolo amapereka ntchito yofewa ya injini kuyaka mkati.
4. Ngati galimoto ikudutsa kulamulira chilengedwe (mwachitsanzo, podutsa malire ndi mayiko a EU, njirayi ndi yovomerezeka), ndiye kuti kukhalapo kwa kubwezeretsanso kumawonjezera mwayi wodutsa cheke ichi ndikupeza chiphaso.

Mu zitsanzo zambiri zamagalimoto, recirculation dongosolo si mophweka kwambiri kuzimitsa, ndipo kuti injini kugwira ntchito mosasunthika popanda izo, zoikamo zina za unit ulamuliro pakompyuta ayenera kupangidwa. Kuyika mapulogalamu ena kudzalepheretsa ECU kuyankha kusowa kwa zizindikiro kuchokera ku masensa a EGR. Koma palibe mapulogalamu fakitale, kotero kusintha zoikamo zamagetsi, mwini galimoto amachita pangozi yake ndi chiopsezo.

Pomaliza, timapereka kanema wachidule wakanema wa momwe kubwereza kumagwirira ntchito mugalimoto:

Kufotokozera kosavuta kwa Exhaust Gas Recirculation (EGR)

Mafunso ndi Mayankho:

Momwe mungayang'anire valve ya EGR? Zolumikizana ndi ma valve zimakhala ndi mphamvu. Kudina kuyenera kumveka. Njira zina zimadalira malo oyika. Kwenikweni, pamafunika kukanikiza pang'ono membrane wa vacuum pomwe injini ikuyenda.

Kodi valavu ya EGR ndi chiyani? Ichi ndi chinthu chofunikira kuti muchepetse zomwe zili muzinthu zovulaza mu utsi (mipweya ina imalunjikitsidwa kumalo ochulukirapo) ndikuwonjezera magwiridwe antchito a unit.

Vavu ya EGR ili kuti? Zimatengera kapangidwe ka injini. Muyenera kuyang'ana m'dera la manifold (pa zobweza palokha kapena paipi yomwe imalumikiza kulowetsedwa kwa injini).

Kodi valve yotulutsa mpweya imagwira ntchito bwanji? Pamene throttle imatsegulidwa kwambiri, chifukwa cha kusiyana kwapakati pa kulowetsedwa ndi kutulutsa mpweya wambiri, gawo la mpweya wotulutsa mpweya umalowetsedwa mu dongosolo la injini yoyaka mkati mwa valavu ya EGR.