ISSN: 2354-0575 PHAN TICH BANH GIA THANH PHAN PHAT THAI CUA DONG CO DIESEL KHI SU^ DUNG NHlfeN LEEU BIODIESEL CHE B I E N TU" DAU AN PHE THAI Nguyin Xuan Hoa, Nguyen Van Nhinh Truong Dai hge Suphgm Ky thugt Hung Yin Tom tat: Bdi bdo trinh bdy kit qud nghien ciru dnh huong cua nhiin lieu diesel sinh hoc dugc che biin ttr ddu an phe thdi vai ty I? pha trgn 5% (B5) den thdnh phdn phat thdi eua dong ca diesel Kit qud thifc nghiem tren ddng ca diesel D24S khdng tang dp thuc hien tren bdng thu dgng ca nhiiu xylanh, eung vai cde thiit bi ehuyen dicing, cho thdy ede thdnh phdn HC, CO, CO^ vd lugng chat thdi dang hgtgidm dang ke, nhien hdm lugng NO^ cd tang len Ket qud ndy Id mdt huang di mai de tim gidi phdp hap ly dap ung nhu cdu quan vi nguon nhien liiu thay the vd gidm thiiu mite dgc hai thdi dgng eo diesel Tit khoa: Thdnh phdn khixd, Khi xa dgng ca diesel, Nhien lieu sinh hgc; Biodiesel; Dat van de Nghien ciiu nham bo sung giai phap sii dung nhign lieu thay thg diesel khoang dang diin can kiet; Danh gia anh huong cila nhign lieu sinh hpc B5 den phan phat thai ciia dpng co diesel; So sanh miic dp anh huong ciia phan phat thai sic dyng nhien lieu sinh hpc B5 vai dau diesel khoang tren dpng ca diesel khong tang ap chu trinh; dx/d(p - Toe dp toa nhiet [1] Cff s d l y thuyet 2.1 Ca sit ly thuyit qua trinh chay ddng Cff diesel 2.1.1 Cac giai doan qua trinh chay Qua trinh chay ctia dpng co diesel eo thg chia b6n giai doan nhu Hinh 1: - Giai doan I: Chay tre, digm den - Giai doan II: Chay nhanh, digm den - Giai doan III: Chay chinh, diem dgn 4, - Giai doan IV: Chay rot, digm den het 5, eo thg coi digm la diem co nhiet lugng chay nha ehigm 95 - 97% nhiet lugng cip cho chu trinh 2.2 Qua trinh chay dong cff diesel su diing nhien lieu biodiesel 2.2.1 So sanh nhien lieu biodiesel va diesel thtrcmg a Thanh phan hoa hgc Bang Thdnh phdn hda hgc ca bdn cua biodiesel tir ddu dau ndnh vd diesel thuong [5] 2.1.2 Cac ygu td chinb anh hu-ong toi qua trinh chiy Tinh chdt nhien heu; Ty so nen; Goc phim som; Quy luat phun; Chat lugng phun nhien hgu; Digu kien nap va thai; Vat lieu chg t£io piston va xylanh, Chg dp lam viec ciia dpng co [2] Ty le (% khoi lirgrng) Thanh phan Biodiesel Diesel thirong C H 77,2 87 11,9 13 S 10,8