Chozizira cha EGR ndi chipangizo chomwe chimagwiritsidwa ntchito kuchepetsa mpweya wochokera ku injini zoyatsira mkati, zomwe zimagwira ntchito pochepetsa kupanga ma nitrogen oxides (NOx) kudzera mu njira ya exhaust gas recirculation (EGR), kumene mpweya wotulutsa mpweya umakhazikika ndikubwereranso ku injini kuti uyake.
Chozizira cha EGR nthawi zambiri chimakhala ndi chotenthetsera chomwe mpweya wotulutsa mpweya, womwe umatuluka mupopi ya injini, umasinthidwa ndi sing'anga yozizira (nthawi zambiri madzi ozizira a injini kapena mpweya) kuti muchepetse kutentha kwa mpweya wotuluka. Kuchepetsa kutentha kwa mpweya wotulutsa mpweya kumathandiza kuchepetsa kupanga NOx, komwe kumalimbikitsidwa ndi kutentha kwakukulu.
Pogwira ntchito ndi EGR yozizira, injini imatha kuchepetsa mpweya wa NOx pamlingo wina, motero ikugwirizana ndi miyezo ya chilengedwe. Nthawi yomweyo, EGR yozizira imathandizanso kukonza kuyaka kwa injini ndikuchepetsa kugwiritsa ntchito mafuta.
Zozizira za EGR zamagalimoto amalonda, Timapereka zida zapamwamba kwambiri zoziziritsira EGR (zipinda zolowera ndi zotulutsira, zipinda zolowera ndi zotulutsira madzi).
Ziwalo zathu (chipinda cha gasi) muzozizira zonse za EGR zimagwira ntchito pa kugwirizana, mbali ya mpweya wabwino imagwiritsidwa ntchito kugwirizanitsa mpweya wotulutsa mpweya kudzera mu dzenje lozungulira kuti muyike valavu ya EGR, kukonzanso kwapamwamba pamtunda mu njira yonse yolumikizira kuti mugwire ntchito yosindikiza; doko lalikulu kudzera pakuwotcha-kutentha kwambiri kolumikizidwa ndi chipolopolo; zakuthupi ndi ZG08Cr18Ni9, zinthuzo ndi zosagwira dzimbiri, kukana kutentha kwambiri, zomwe zimathandiza kupititsa patsogolo moyo wautumiki wa magawo.
Titha kupereka magawowa mosiyanasiyana malinga ndi zosowa za kasitomala.