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Tgp chi Khoa hoc - Cong nghe Thuy sdn SSmn^ KET QUA NGHIEN CL/U DAO TAO SAU DAI HOC NGHIEN Ciru ANH HlTOfNG CUA VI TRI VA THCW DlfiM PHUN KHI HOA LONG LPG DEN KHI THAI CUA DQNG CO DIESEL SU" DUNG NHIEN LIEU HON HOP LPG - DAU DIESEL RESEARCH ON THE IMPA CT OF POSITION END LPG FUEL INJECTION TIME ON EMISSION GAS OF DUAL FUEL DIESEL ENGINES USING MIXTURE OF LPG - DIESEL FUEL Li Xuan ChV, Nguyin VanNh^ Ngay nhgn bai: 11/7/2012; Ngay phanbi^ thdng qua:21/8/20l3; Ngay duyft dang 10/12/2013 TOM TAT Xu hudng sU dying dgng CO diesel ludng nhien lieu (dual fuel diesel engine) nhdm myic dich g^m chi phi rAienhh vd nhiem khixd dang dupc tnen khai rong rdi Khi nghien cuu dong ca diesel luang nhien Ueu thi viec xdc dinh dungihm diem phun dupc quan tdm Ket qud nghien ciru ciia nhom thuc nghiem dd chi dupc vi tri vd thdi diem bat dau cung cap hda Idng LPG co lpi cho moi truong md ket cdu cua dpng ca khong b\ thay doi nhieu Titkhda dpng cP Diesel luang nhien lieu, thai diem bat dau phun LPG, vi tri ddt vol phun ABSTRACT The trend of using dual fuel diesel engines for the purpose of reducing Juel cost and air pollution has been rapidly increased When researching on these engines, LPG fuel injection time also needs to be taken into account carefully The experimental results showed that the position end start time of LPG injection would be benefit to environment, while the engine structure was still remained Keywords dualfiiel diesel engine, start time of LPG injection LDATVANDE ^ Song hdnh vdi sg phdt trien kinh t l , nhat td thap ky vira qua, nhilm moi trudng ngdy cang nghiem trgng ede hogt dfng sdn xult edng nghifp, ndng fighif p giao thdng vgn tai va sinh hoaL Tronq dd „^.,i« „KA tu Z u ' - ^••' ', T ngudn phdt thai cdc chat o nhiem tu dgng ca ddt cua hogt dpng giao thdng van tai ehilm ty trpng ddng ke Vige su dyng dfng eo diesel tudng nhidn lifu Id mft nhijng giai phap gdp phin gidm thilu nhilm mdi Uudng Thdi diem bit diu eung cap hoa tdng LPG cho dfng ca diesel Id thdng sd quan trgng eIn duge nghidn euu d l ddnh gid muc df giam nhilm mdi tn/dng dp dyng gidi phap tren II NOI DUNG N G H I E N CtPU Phdn tieh cdc phuang an cung d p LPG d» ca diesel, lua chgn phuang an y,^^ ^dnh thu nghifm tgi ede thdi aim cung „ „ • or- ^A W »i,- • j > A 'cap LPG de tim thai diem cung elp toi uu a •in K ^ T Q U A NGHIEN Ct>U VA T H A O LUAN "*ã *^đ* ^ " ^ **^* nghiem Chung tdi tiln hdnh thir nghifm theo cSc phuang dn dgt vdi phun vd thdi 6\km eung cSp LPG trdn dfng ea diesel S I 95 eua hang Cao PtiongTrung Qude Thdng sd ky thuft eiia dfng ccr fli«rc trinh bdy d bdng PGS.TS, Nguyôn VSn NhĐn- Khoa Co - Trudng Dai hpe Nha Trang 66 • TRUONG DAI HOC NHATRANG Tgp chi Khoa hoc - Cong nghe Thuy sdn B i n g Thong s6 ky t h u t t ciia d^ng S195 STT ThAngsSkjthuft Kilu toai Diesel ky Dudng kinh xilanh 95 (mm) Hdnh trinh piston 115 (mm) Cdng suit djnh mirc 12 (HP) Tie df quay djnh mue 2000 (vdng/phiit) Thi b'eh xilanh 0,815 (tit) Van hiit md 17" tnrdc diem ehet trdn Van hut ddng 43" sau dilm chit dudi \^nxamd 43" tnrdc diem ehet dudi 10 Van xd ddng 17" sau ffilm chet tren Hinh Phae thao hai vj tri d^t v6i phui Su dung hf thdng phun nhidn lifu LPG phun gian dogn vdo dudng ngp nhd df ehdn khdng tgi ed gdp ngp duge trang bj them thiet bj dieu khien dign tu d l xde dinh thdi dilm bit d i u cung d p LPG 1: Binh LPG 11:ECU 2,6^: Ddng hd dp sua! binh LPG 12: Dfng cor diesel 3: Van khda binh LPG biin nhi^ d$ nu6c likm mit 4: Van Ol^ntLr n: cim b i ^ tdc d$ 5: Van glAm dp Tx: csm bi^n iihi#t d? xi 7: Van mft chilu 8: B i y lira 10:Vantl6tlinj Hinh Scr nH c^u tao hf Ihong phun nhifn lifii LPG gian doan trSn d$ng cor D12 Nhidn lifu khf hda Idng LPG d binh chua cd dp suat khodng 17 kG/cm^ dudi dp suit ndy md van chgn 3, LPG Idng dugc ddn di theo dudng dng cao dp qua van khda di tdi van dien tu 4, van dif n tip khda thi LPG bj giir Igi dng cao dp, dirdi tdc dgng cua ddng dien 24v van dien tir md, nhidn tif u LPG di qua van dien tir cd dp suit 5-7 kG/cm^ Sau dd gas tilp tyc di qua van dieu dp (van ndy cd tdc dyng dilu chmh dp suit nhien lifu LPG), sau di qua van dieu dp, dp suit gas dugc dilu chinh giam xudng kG/cm^ tdi biy lua cd gan ddng hd dp suit Tgi 8, gas dugc tgc qua nude rdi thoat dng cao dp tdi van tiet luu 10 rdi di ddn vdi phun tren hgng ngp ddng ca D12 vd hda trfn vdi khdng nap Khi dd hdn hgp LPG - khdng theo kl hdt sg chdnh tfch dp suit bdn w vd dp suit trdn dudng ngp md bj hut vdo xi lanh dfng ca k i t hgp vdi nhien ligu DO de thuc hifn qud trinh chay Tren dfng ca cd gan cde earn biln nhift df nude, cam biln nhift df xd, cam bien tdc ddng ea, dgng ca lam vigc cdc cam biln ndy bao tin hif u v l bf dieu khien trung tdm ECU K i t qud thi nghigm phun LPG - DO lien tyc Bang Nong CO, HC d cdc mirc tdi khdc %LPG P=2.4KW P=1.2KW HC(ppm) C0t%vo1) HC(ppm) CO(%vol) 2 10 20 80 31 11 35 114 87 11 TRUONG OAI HOC NHATRANG 67 Tgp chi Khoa hoc - Cong nghe Thuy sdn y = 41.9x-53.5 j , ^ J H , pHUN LPG d CHEDO LEN TUC ^ R = 9568 2KW - • - CO _LPG d 2KW HC_LPG g 4KW - co_LPG iy y = 9286x^-3.0714x + a L P G % y = x ^ - 4 x ^ ^ R^ = 0.9006 R ' = 9926 (CO_LPGO' KW) -Poly (CO _LPG & I KW) Hinb Do thi bieu dien CO vi HC frcac itiin: lai khac lihi phun LPG - DO lien tuc Ket qud thi nghifm phun LPG - DO gian dogn Vdl phun dfttgi Lo, Pga= kG/cm^ P^= 1.2 kW, thay ddi thdi gian phun Thdi gian phun: Tf = 20, 25, 30, 35 ms Db thi bi6u diin ni gdoHC , r - ' ' \ , ^ ^ ^ ^ ^ ^^^^^^^^1 ^ • ^ ^ ^ ^ 22 34 M cnotf) lOnh E>a thj bieu diln CO v a H C theo g6c phun va ihiri gian phun tai LO va P^= 1.2 kW Vdi phun dft tgi LO, Pgas= kG/cm^ P^= 2.4*W, thay ddi thai gian phun Thdi gian phun Tf = 20, 25, 30, 35 ms D6 thj biiu diln n6ng CO r? D A ttii bi^u d « n n n g HC K^j^^^^^^^^H ^Rr^j::;-'-"- -ãCO_20ms -ã-C0_25ra5 -*-CO_30ms -ằô-CO_35ins' - - H C 3S™ 30 a h % ,(1 ,j, ^ -v^ -p "(ii^l C(( do) Hinh Do thj bieu dien CO va HC theo gdc phun va IhM gian phun tai LO v i P,^= 2.4 kW 68 - TRUONG DAI HOC NHA TRANG Tap chi Khoa hoc - Cong nghe Thiiy san So 4/2013 • V6i phun d j t tai L l , Pgas= kG/cirf,P^= 2.4 kW, thay floi thm gian phun D i Hli b i t u d i i n n i n g d C O D o thi bieu d i l n n d n g d o HC 0.1G D14 J t-^ f "12 01 *ã OOB ^C-i-i._^_^vj-.-t-ô -ã-CO_25m3 -*-CO_30ms 006 002 ô ^ - ; ^ j 100 « ^ 80 L a :$SiH!5^1 ,-.-HC_»ms 6C p"" -«-CO_35fnl wt_ 004 X -•-HC_25ni» i' * s* »- _—• -"*" _„_— t=-^^T^-*,, • , ^ ^ » * = * ^^ • • "~~^ Dd thj bieu diln n ^ i g CO K:; -) K ^ - ^ H C 20[RS H t -•-HC 25nt5 -*-He i 30nis -»t-He 35n>s -»-.He 40ins Hinh D thj bieu d i l n CO v i HC theo g6c phun va thai gian phun tai L l va P^= 2.4 k W Bdng Ket qud so sdnh hai vj tri i l p dat vdi phun tgi L1 va LO TF30ms t^iLO Cf CO HC CO 0.12 82 0.15 101 0.13 83 0.15 115 0.13 91 0.14 97 0.13 79 0.13 90 0.13 75 0.13 94 10 0.12 70 0.13 93 T?iL1 HC 12 0.12 72 0.13 96 14 0.12 76 0.13 97 16 0.12 81 0.13 94 18 0.13 83 0.13 92 20 0.13 82 0.13 99 22 0.12 76 0.13 99 24 0.12 76 0.14 99 26 0.12 76 0.13 94 28 0.13 80 0.14 99 30 0.14 94 0.14 100 TRUONG OAI HQC NHA TRANG • 69 ^ Tgp chi Khoa hoc-Cong nghe Thtiy sdn iis5n3 - Di thj blhi diin ning CO tai Lo va Ll D14 _012 % 01 j-^CO_30mslaLo J-.-CO aOmstaLI iooe O 006 " 004 002 »• * * N* ^ a*- * mnh Do thj so sinh nong dp CO vi HC l^i bai v| trf LO vit Ll IV, K^T LUAN Td k4t qud lhi,rc nghigm diung toi mt diFgc mgt sd ket lugn sau: - Phirang dn cung eSp LPG vdo ddng co cd anh hu'dng quySt ^ n h ndng dg phdt thai HC, CO, HSU - Phuong dn phun gidn dogn trdn du-dng nap eo nhieu uu the hem, cde ehi tidu v l ndng dO cae chat ptiat Ihdi aku thip han - Thdi dilm phun thich hep nhat d thdi diem xupap hut md khodng td 16 den 18 dp va thdi gian F^n td 20ms - V| trf ddt vdi phun sdt xupap nap vl tri LO eho ket qud tot nhilt TAI LI$U THAM KHAO TUngVi^t Blil V3n Ga to v^ nhiem moi tnrcmg NXB Giao due Dinh Ngpc Lan, 1977 Nang lu^ng the ky 20 NXB Khoa hgc vk ky thuit Nguyen Vin Nh|n, 2002 Bai giang: I ^ e n lieu va chdt boi tron Luu hinh npi bO - Truong Djd hpe Thiy san Nha Trang Nguyen Vfin Ninh, 1999 Van deo nhilm moi Iracmg xe ctr gioi gay In LA Phomm, Tran Hihi Nghj, 1990 Nhien li^u - dau nhon - nude diing cho tiu thiiy NXB Giao thong van tai, HiNflL Nguyen TSt Ti^n, 2005 Nguyen ly dpng ccr d6t NXB Giao dye Le Minh Tien 2008 Nghien cuu he thSng nhien lieu cho dgng ccr dual - fuel sii dyng diesel va biogas keo may di?o D?i hpe Da Ning Tieng Anh Jan Werner, Jan Wajand, 1976 Sihiiki spalmowe malej i sredniejraocy,Wydawnictwwo Naukowo-Techniczne - Warszawi LesterC Lichly, 1967 Combustion engine processes, McGraw-HilL 70 • TRUONG DAI HOC NHA TRANG II ... H , pHUN LPG d CHEDO LEN TUC ^ R = 9568 2KW - • - CO _LPG d 2KW HC _LPG g 4KW - co _LPG iy y = 9286x^-3.0714x + a L P G % y = x ^ - 4 x ^ ^ R^ = 0.9006 R '' = 9926 (CO_LPGO'' KW) -Poly (CO _LPG. .. frcac itiin: lai khac lihi phun LPG - DO lien tuc Ket qud thi nghifm phun LPG - DO gian dogn Vdl phun dfttgi Lo, Pga= kG/cm^ P^= 1.2 kW, thay ddi thdi gian phun Thdi gian phun: Tf = 20, 25, 30, 35... thdng phun nhidn lifu LPG phun gian dogn vdo dudng ngp nhd df ehdn khdng tgi ed gdp ngp duge trang bj them thiet bj dieu khien dign tu d l xde dinh thdi dilm bit d i u cung d p LPG 1: Binh LPG
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