EGR ta yaya EGT?

Ga yawancin masu ababen hawa, sake zagayowar iskar gas, EGR (Recirculation Exhaust Gas Recirculation) a takaice, ba sabon abu bane kamar yadda yake a cikin motocinsu. Duk da haka, ba kowa ba ne ya san cewa ba tare da hulɗa tare da na'urori masu auna sigina na EGT (sharewar iskar gas), wanda babban aikinsa shine auna yawan zafin jiki na iskar gas, ba zai iya aiki yadda ya kamata ba. Kodayake duka EGR bawuloli da na'urori masu auna firikwensin EGT suna da alaƙa da iskar gas, rawar da suke takawa a cikin tsarin ya bambanta.

EGR - ta yaya yake aiki?

A takaice dai, aikin tsarin EGR shine ƙara yawan iskar gas ɗin da ke shiga cikin silinda, wanda ke rage yawan iskar oxygen a cikin iska mai sha kuma ta haka yana rage yawan konewa. Da yawa don ka'idar. A aikace, wannan tsari yana faruwa ne ta hanyar da ake ciyar da iskar gas a cikin iska ta hanyar iskar gas na recirculation (EGR) da ke cikin tashar tsakanin nau'o'in ci da shaye-shaye. Lokacin da injin ke gudana a abin da aka sani da idling, an rufe bawul ɗin EGR. Yana buɗewa ne kawai bayan tuƙi ya dumama, wato lokacin da zafin konewa ya tashi. Menene takamaiman fa'idodin amfani da tsarin EGR? Godiya ga EGR, iskar iskar gas ya fi tsabta fiye da mafita na al'ada (ko da lokacin da injin ɗin ke gudana), musamman, muna magana ne game da rage mafi yawan cutarwa nitrogen oxides.

Me ya sa injin ke ta girgiza?

Abin takaici, tsarin EGR yana da sauƙin lalacewa. Ruwan da ake ajiyewa a ciki shine galibi ke haifar da rashin aiki mara kyau. A sakamakon haka, bawul ɗin baya buɗewa ko rufe daidai, ko, mafi muni, an toshe gaba ɗaya. Malfunctions a cikin aiki na shaye gas recirculation tsarin na iya bayyana kansu, ciki har da "Jerking" yayin tuki, da wuya fara da engine ko ta m idling. Don haka menene muke yi lokacin da muka sami lalacewar bawul ɗin EGR? A irin wannan yanayi, ana iya jarabce ku don tsabtace shi daga tarin zubo. Duk da haka, a cewar masana, wannan ba shine mafita mai kyau ba, tun da akwai haɗarin gaske na gurɓataccen gurɓataccen abu ya shiga cikin injin yayin wannan aiki. Sabili da haka, mafi kyawun mafita shine maye gurbin bawul ɗin EGR tare da sabon. Hankali! Dole ne a daidaita shi da asali.

Zazzabi a ƙarƙashin (diddigar) saka idanu

Daidaitaccen ma'auni na yawan zafin jiki na iskar gas yana da mahimmanci don daidaitaccen aiki na tsarin EGR. Don haka, ana shigar da firikwensin zafin jiki na iskar gas a sama na mai canzawa mai kaifi da sau da yawa kuma a sama na matatar dizal particulate (DPF). Suna isar da bayanai zuwa na'urar sarrafa motar, inda aka canza shi zuwa siginar da ta dace wacce ke sarrafa aikin wannan tuƙi. A sakamakon haka, za a iya sarrafa adadin gauraye man fetur da aka kawo wa silinda ta yadda mai canzawa da dizal particulate tace aiki da nagarta sosai kamar yadda zai yiwu. A daya hannun, akai-akai saka idanu yanayin zafin iskar gas yana kare mai kara kuzari da tacewa ta hanyar hana zafi da wuce gona da iri.

Lokacin da EGT ta kasa...

Kamar bawuloli na EGR, na'urori masu auna firikwensin EGT suma suna lalacewa ta hanyoyi daban-daban. Sakamakon girgizar da ya wuce kima, yana iya, a tsakanin sauran abubuwa, maiyuwa ya lalata haɗin haɗin waya na ciki ko lalata igiyar da ke kaiwa ga firikwensin. Sakamakon lalacewa, amfani da man fetur yana ƙaruwa, kuma a cikin matsanancin yanayi, mai kara kuzari ko DPF ya lalace. Ga masu amfani da motoci sanye take da na'urori masu auna firikwensin EGT, akwai wasu labarai marasa daɗi: ba za a iya gyara su ba, wanda ke nufin cewa idan an gaza, dole ne a maye gurbinsu da sababbi.