Ara\u00e7lar i\u00e7erisinde \u00e7al\u0131\u015fmalar\u0131n\u0131 etkileyen pek \u00e7ok par\u00e7a bulunur. T\u00fcm par\u00e7alar\u0131n d\u00fczg\u00fcn bir \u015fekilde \u00e7al\u0131\u015fmas\u0131 ise s\u00fcr\u00fc\u015f g\u00fcvenli\u011fi ve ara\u00e7ta ar\u0131zalar\u0131n olu\u015fmamas\u0131 i\u00e7in olduk\u00e7a \u00f6nemlidir. \u0130\u015fte, bu par\u00e7alardan biri de motorun yanma i\u015flemi i\u00e7in b\u00fcy\u00fck \u00f6neme sahip olan EGR valfidir. <\/p>\n\n\n\n\n\n\n\n
O halde gelin, \u201cEGR valfi nedir?\u201d, \u201cEGR valfi ar\u0131zalan\u0131rsa ne olur?\u201d ve \u201cEGR valfi ar\u0131zas\u0131 nas\u0131l \u00e7\u00f6z\u00fcl\u00fcr?\u201d sorular\u0131n\u0131n cevaplar\u0131n\u0131 \u00f6\u011frenmeye ba\u015flayal\u0131m. <\/p>\n\n\n\n
EGR Valfi Nedir? <\/strong><\/h2>\n\n\n\n
Exhaust Gas Recirculation kelimelerinin k\u0131saltmas\u0131 olan EGR, hem dizel hem de benzinli ara\u00e7larda bulunan ve motorun yanma i\u015flemini d\u00fczenleyen bir par\u00e7ad\u0131r. Ara\u00e7taki egzoz devirdaiminin kontroll\u00fc bir \u015fekilde yap\u0131lmas\u0131n\u0131 sa\u011flayarak egzoz emisyonunu azalt\u0131r. EGR valfi sayesinde motorun yanmas\u0131 ile meydana gelen azot oksit oran\u0131 azalt\u0131l\u0131r ve ortaya \u00e7\u0131kan zararl\u0131 gaz\u0131n minimum seviyeye d\u00fc\u015f\u00fcr\u00fclmesi sa\u011flan\u0131r. <\/p>\n\n\n\n
Azot oksit, y\u00fcksek s\u0131cakl\u0131kta ortaya \u00e7\u0131kan bir gazd\u0131r ve arac\u0131n silindir yanma odas\u0131n\u0131n \u0131s\u0131nmas\u0131, bu gaz\u0131n ortaya \u00e7\u0131k\u0131\u015f\u0131n\u0131 etkiler. EGR valfi de bu noktada devreye girerek yanma s\u0131cakl\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcr\u00fcr ve ara\u00e7tan sal\u0131nan azot oksit oran\u0131n\u0131 azalt\u0131r. K\u0131saca zararl\u0131 gazlar\u0131n olu\u015fumunu azaltan bu sistem sayesinde ara\u00e7lar\u0131n \u00e7evreye zarar\u0131 y\u00fcksek oranda d\u00fc\u015f\u00fcr\u00fcl\u00fcr. <\/p>\n\n\n\n
Tabii ki \u00e7evre i\u00e7in b\u00fcy\u00fck \u00f6neme sahip olan bu sistem, ayn\u0131 zamanda arac\u0131n d\u00fczg\u00fcn bir \u015fekilde \u00e7al\u0131\u015fmas\u0131 ve b\u00fcy\u00fck hasarlar\u0131n meydana gelmemesi i\u00e7in olduk\u00e7a \u00f6nemlidir. Bu nedenle EGR ar\u0131zas\u0131 fark edildi\u011fi anda gerekli \u00f6nlemlerin al\u0131nmas\u0131 \u015fart. Peki, bir arac\u0131n EGR valfi ar\u0131zaland\u0131\u011f\u0131nda nas\u0131l anla\u015f\u0131l\u0131r? <\/p>\n\n\n\n
Bu sorunun cevab\u0131n\u0131 verebilmek i\u00e7in arac\u0131n \u00e7al\u0131\u015fmas\u0131 s\u0131ras\u0131nda ortaya \u00e7\u0131kan aksamalar\u0131 incelemekte fayda var. Bir ara\u00e7ta EGR ar\u0131zas\u0131 olmas\u0131 halinde \u015funlar ya\u015fanabilir: <\/p>\n\n\n\n
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S\u00fcr\u00fc\u015f s\u0131ras\u0131nda motorun \u00e7al\u0131\u015fmas\u0131nda sars\u0131nt\u0131lar ve \u00e7e\u015fitli sesler ortaya \u00e7\u0131kar. Hatta motorun yanma i\u015flemi d\u00fczenlenmedi\u011fi i\u00e7in motor \u00e7al\u0131\u015fmayabilir.<\/li>\n\n\n\n
Ara\u00e7, ola\u011fan yak\u0131t t\u00fcketiminin aksine daha fazla yak\u0131t t\u00fcketir.<\/li>\n\n\n\n
S\u00fcr\u00fc\u015f s\u0131ras\u0131nda ara\u00e7ta tekleme ve ani h\u0131zlanmada performans d\u00fc\u015f\u00fckl\u00fc\u011f\u00fc ya\u015fan\u0131r.<\/li>\n\n\n\n
Ara\u00e7tan daha yo\u011fun ve siyah renkte egzoz duman\u0131 \u00e7\u0131kar. <\/li>\n<\/ul>\n\n\n\n
EGR ar\u0131zas\u0131n\u0131n olabilece\u011fini g\u00f6steren bu belirtiler dikkate al\u0131nmay\u0131p ara\u00e7 kullan\u0131lmaya devam edilirse yanma odas\u0131n\u0131n yo\u011fun s\u0131cakl\u0131\u011f\u0131ndan dolay\u0131 motorun \u00e7al\u0131\u015fmas\u0131n\u0131 sa\u011flayan farkl\u0131 par\u00e7alar da ar\u0131zalanabilir. Bu nedenle arac\u0131n i\u00e7 aksam\u0131nda daha b\u00fcy\u00fck hasar\u0131n olu\u015fmamas\u0131 i\u00e7in EGR valfi ar\u0131zas\u0131 fark edildi\u011fi anda \u00f6nlem almak olduk\u00e7a \u00f6nemli. <\/p>\n\n\n\n
EGR Valfi Neden Ar\u0131zalan\u0131r? <\/strong><\/h2>\n\n\n\n
EGR ar\u0131zas\u0131, farkl\u0131 nedenlerden dolay\u0131 ortaya \u00e7\u0131kabilir. En s\u0131k kar\u015f\u0131la\u015f\u0131lan durum ise zehirli gazlar\u0131 tutan bu sistemde zamanla at\u0131k birikimi olu\u015fmas\u0131 ve buna ba\u011fl\u0131 olarak EGR valfinin t\u0131kanmas\u0131d\u0131r. <\/p>\n\n\n\n
Zamanla EGR valfinde t\u0131kanma meydana gelebilir. Ancak bu t\u0131kanman\u0131n daha s\u0131k ortaya \u00e7\u0131kmas\u0131na neden olan baz\u0131 fakt\u00f6rler bulunur. Bunlardan ilki yak\u0131t kalitesidir. D\u00fc\u015f\u00fck kaliteli yak\u0131tlar, EGR valfinin daha h\u0131zl\u0131 kirlenmesine ve t\u0131kanmas\u0131na sebep olabilir. <\/p>\n\n\n\n
Di\u011fer fakt\u00f6r ise s\u00fcr\u00fc\u015f ko\u015fullar\u0131d\u0131r. Yo\u011fun trafik, k\u0131sa mesafeli s\u00fcr\u00fc\u015fler ve a\u015f\u0131r\u0131 h\u0131z, EGR valfinin \u00e7al\u0131\u015fmas\u0131n\u0131 olumsuz \u015fekilde etkileyerek ar\u0131zalanmas\u0131na neden olabilir. <\/p>\n\n\n\n
Yukar\u0131da belirtti\u011fimiz t\u00fcm fakt\u00f6rler g\u00f6z \u00f6n\u00fcnde bulundurularak EGR valfi d\u00fczenli bir \u015fekilde kontrol edilmeli ve t\u0131kanma ya\u015fanmamas\u0131 i\u00e7in temizlenmelidir. \u201cPeki, EGR valfi nas\u0131l temizlenir?\u201d diye merak ediyorsan\u0131z hemen temizleme detaylar\u0131na ge\u00e7elim. <\/p>\n\n\n\n
EGR valfini temizlemek i\u00e7in \u00f6ncelikle par\u00e7an\u0131n vidalar\u0131 \u00e7\u0131kar\u0131l\u0131p s\u00f6k\u00fcm\u00fc yap\u0131lmal\u0131d\u0131r. Sonras\u0131nda ara\u00e7 i\u00e7erisinden \u00e7\u0131kar\u0131lan EGR valfi, par\u00e7ada biriken tortuyu \u00e7\u00f6zecek \u00f6zel s\u0131v\u0131lar ve bir f\u0131r\u00e7a ile temizlenmelidir. Temizleme i\u015flemi tamamland\u0131ktan sonra da EGR valfi tekrar motora monte edilir. <\/p>\n\n\n\n
Ancak \u015funu belirtelim: E\u011fer EGR valfinde biriken kir, art\u0131k ta\u015fla\u015fmaya ba\u015flad\u0131ysa temizlemek olduk\u00e7a zor olabilir. Ta\u015fla\u015fma olmas\u0131 halinde EGR valfini temizlemek yerine yenisi ile de\u011fi\u015ftirmek gerekebilir. <\/p>\n\n\n\n
Unutmay\u0131n ki EGR valfini s\u00f6kmek, temizlemek ve tekrar yerine takmak, uzmanl\u0131k gerektiren bir i\u015ftir. Arac\u0131n i\u00e7 aksam\u0131nda herhangi bir bozulma veya daha b\u00fcy\u00fck bir hasar meydana gelmemesi i\u00e7in EGR valfi temizli\u011fi ya da de\u011fi\u015fimi i\u00e7in yetkili ki\u015filerden destek alman\u0131zda fayda var. <\/p>\n\n\n\n
EGR valfinin bak\u0131m\u0131n\u0131 yapt\u0131\u011f\u0131m\u0131za g\u00f6re \u015fimdi, g\u00fcvenle trafi\u011fe \u00e7\u0131kma zaman\u0131. Ancak trafikte her zaman risklerin oldu\u011funu unutmay\u0131n. T\u00fcm bu risklere kar\u015f\u0131 haz\u0131rl\u0131kl\u0131 olmak i\u00e7in ise MAPFRE Sigorta her zaman yan\u0131n\u0131zda. <\/p>\n\n\n\n
![\"EGR](\"https:\/\/www.mapfre.com.tr\/blog\/media\/2023\/12\/EGR-arizasi-nasil-anlasilir.jpg\")
<\/figure>\n\n\n\n![\"EGR](\"https:\/\/www.mapfre.com.tr\/blog\/media\/2023\/12\/EGR-valfi-nasil-temizlenir.jpg\")
<\/figure>\n\n\n\n