NGHIEN CUU - TRAO OOI N G H I E N C U U T H I E T K E V A C H E TOO H E T H O N G P H U N X f l N G D I E N T U T H P Y THE C H O HE T H O N G D U N G B O CHE H O T K H I T R E N X E M A Y (*) PHAM M I N H TUAN, NGUYEN DUY T l f i N LE ANH TUAN, NGUYEN THE TRUC, T R A N A N H TRUNG (**) L E DANG DONG T H I E T K E , C H E T A O H E G l l T H I E U Theo Cue Dang kiem Viet Nam, tinh den 2010, Viet Nam co 1.394.858 xe to nhung co tdi khoang 33 trieu chiec xe may dang luu hanh, chiem 95% so lupng phuong tien giao thong va dap ung 90% nhu cau di lai tai cac Idn Hang nam, co them khoang trieu xe may va 150.000 to mdi tham gia giao thong Nhu vay, xe may d Viet Nam la loai phuong tien giao thong chu yeu nhung cung la mpt nhung nguon nhiem chu yeu doi vdi cac Idn THONG EFI CHO XE M A Y 2.1 Lua chgn ddi tuang nghien cuu Thong qua kinh nghiem thuc te, qua tim hieu, thu thap thong tin, so lieu ve su thong dung, thi phan cua cac loai xe gia re bien nuoc ta, chiing toi nhan thay, dong xe Dream ciia hang Honda co dung tich cong tac danh nghia 100 cm duoc dung kha bien tai nude ta Ngoai ra, cac loai xe xuat xir Trung Quoc, cac dong xe De tiet kiem nhien lieu va giam phat thai nhiem khac co ket cau -thong so co ban gan giong nhu Honda moi trudng, nhung nam gan day, cac nha san xuat Dream cung kha bien nhu: Wave a, Detech, Sufat, da sir dung cong nghe phun xang dien tir (Electronic T&T Chinh vi vay, chiing tdi chpn xe SuperDream Fuel Injection - EFI) cho moto-xe may Tai Viet Nam ciia hang Honda Viet Nam cho viec ung dung de nghien da cd mpt so kieu xe sir dung EFI ciia cac hang nhu: ciiu thuc hien de tai Chiec xe dupe chpn thi nghiem la Honda (vdi Future Neo FI, Lead, AirBladeFI); hang chiec xe thi nghiem ciia Phong Thir nghiem xe may, Piaggio (vdi Vespa GTS 125 Super i.e) va VMEP (vdi Phdng thi nghiem Dong co dot trong, DHBK Ha Npi, Attila Elizabeth EFI) Tuy nhien, so chi chiem da chay dupe khoang 40.000 km Trudc cai tien, xe khoang 5% tong so xe dang luu hanh, 95% so lai duoc thii nghiem dac cac thong so kinh te, ky thuat van sir dung bp che hda tieu thu nhieu nhien lieu va va phat thai de lam so lieu so sanh doi chiing phat thai nhieu doc hai He thong nhien lieu phun xang dien tir co so Nham gop phan tim nhung giai phap kha thi giam tieu hao nhien lieu va phat thai nhiem moi trudng, tai Phdng thi nghiem Dong co dot trong, Truong Dai hpc Bach khoa Ha Npi da thuc hien de tai "Nghien cuu thiet ke va che tao he thdng phun xang dien tir thay the cho he thong dimg bo che hoa tren xe may" Ket qua cu the, doi vdi xe Honda SuperDream, da dat muc tieu ban dau de ra, la giam tieu thu nhien lieu va phat thai doc hai Giai phap cd the ap dung cho cac xe may khac dang luu hanh va cac xe may gia re cd nguon goc tu Trung Quoc dang san xuat, lap rap tai Viet Nam nhu tren hinh Be thuc hien de tai, mpt so bo phan, linh kien duoc tinh toan, chpn mua tren thi truong ma cong nghe nude khong che tao dupe hoac che tao dupe nhung gia qua cao Cac bp phan lai duoc thiet ke, che tao khuon kho ciia de tai 2.2 Lua chon edephan tu cua he thdng Cac phan tir can phai mua gom: bom xang, c6 hong gid, van khdng tai, cac cam bien va voi phun Bom xang: Dupe lua chpn la loai bom LGL3, kieu dat thiing xang ciia hang KYMCO, cd so nguyen ly hoat dong the hien tren hinh Day la loai bom cd tich hpp bo dieu ap dupe sit dung tren xe may * Vien Ca Dong luc, Truong Dai hpc Bach khoa HaNpi ** Khoa Co Dong lire, Truong Dai hpc Su pham KyttiuatHung YenlOOcc dupe lap rap tai Dai Loan ' TAP CHI CO KHI VIET NAM • So - Thang nam 2011 Q l NGHIEN CUU • TRAO DOI Van khong tai: Dupe lua chpn la loai dieu khien dong mo bang dien tir, co ky hieu SYNERJECT 379008 Loc gio _J Cam bien vi tri biftfrn ga\ Cam bien ap sual _ dtrbug ong nap Vdi phun: Dupe chpn la voi phun DEKA Short type, co chieu cao 34,5 mm, trd khang cao khoang 13Q, tia phun nghieng 17°, luu lupng va ap suit phun phii hpp vdi loai xe thi nghiem, hinh a 2.3 Thiet ke, che tao mot so bo phan ciia he thdng He thong nap thai: Dupe thiet ke bang phan mem mo phong CATIA V5R20, [1], [2] ^-Cam bien vi tri tnic khuyu Hinh 1: S a he thong nhien lieu phun xang dien hi Co hong gio: Dupe lua chpn la TYPE 72, cua hang BING (xem hinh 5), la loai tich hpp cam bien budm ga da dupe dung tren cac ddng xe co dung tich cong tac tuong tu nhu cua dong co Honda SuperDream va co ket cau phii hop vdi yeu cau lap tren xe Cam bien luu luong nap: Duoc lua chpn cua hang SIEMENS, cd ky hieu SYNERJECT 366-008 5WK9 686, hinh 3b Day la loai cam bien ap suat dudng nap tich hpp cam bien nhiet nap Duong nap: Can bo tri lap dat co hong gio va vdi phun mpt each toi uu [1] V i tri lap voi phun va bien dang co hut duoc thiet ke cho tia phun it bam nhat, hudng thang vao vi tri xupap nap, la noi co nhiet dp kha cao, giiip cai thien qua trinh boc hoi cua nhien lieu, dong thoi phai bao dam sue can nhd doi vdi ddng nap Ngoai ra, bien dang dudng nap dupe thiet ke cho tao nen xoay 16c nhe ciia ddng khong nap, tang cudng qua trinh hoa tron hon hop trudc vao dong co Cudi ciing, dudng nap phai dam bao yeu cau t i n dung toi da cac bp phan hien cd cua xe, co the lap dat duoc khoang khong gian bi han che ma khong gay anh hudng den cac tinh nang ky thuat ciia xe van hanh De thi nghiem, dudng nap dupe che tao don chiec bang ong thep uon dua theo bien dang va ket cau tir tinh toan md phdng [1], [2] Van mot chieu Than born Lutfi gat Canh btJm a) b) Hinh 3: Vdi phun DEKA (a) va cam bien luu luong nap SYNERJECT (b) Nhien lieu Duong thai: Tuong tu nhu dudng nap, dupe cai tien tren co so duong ong thai cu ciia xe de thuan tien cho viec lap dat, tan dung lai thiet bi ciia xe Do phai Cam bien lambda: (Lap tren dudng thai, hinh 6), lap them cam bien oxy va bp xiic tic thai, de giam dupe chpn la loai cam bien oxy Zr02 say nong ben bot he so can tren duong thai nen kich thudc phia dau LP-40289 model CP 10, dung de lay tin hieu ve dudng thai dupe cai tien Ion hon mpt chut, [1], [2] Tuy he so du lupng khong X nhien, kho khan viec dat mua don chiec bp Cam bien nhiet dong co: Dupe su dung la loai xir ly xuc tic thai phan tir nude ngoai nen SITX18T ciia dong co xe BMW M3, dung de lay tin dudng thai chi du tinh khong gian de lap bp xii ly hieu nhiet dp dong co tai nap xylanh thai tuong lai ma thoi Hinh 2: So nguyen ly bom xang dat thung d l TAP CHI CO KHI VIET NAM *l* Sd - Thang nam 2011 NGHIEN CUU - TRAO DOI 3-4-3 Hinh 6: Lap dat duong thai m E m m m W m Hinh the hien vi tri lap hong gio tren dudng nap va hinh the hien vi tri lap dat dudng thai Ngoai ra, cac Thung nhien lieu: Dugc cai tien tir thung nhien lieu bo phan khac nhu cam bien nhiet dong co dugc lap ciia xe nguyen thuy, cho lap duoc bom xang vao dat tren canh la t i n nhiet d phia dudi dong co; cam bien ben giong nhu cac xe may phun xang dien tir toe dugc lap dat vao 16 xac dinh thoi diem danh lira hien co tren thi truong [1] ciia dong co nguyen bin; van khong tai (cung cap them Bo dieu khien dien tir (Electronic Control Unit khong b che ham nong may) duoc lap dat tren - ECU): Dugc thiet ke bao gom cac khoi chiic nang gia canh hong gid phia sau bau loc gid; cdn ECU (phan ciing) nhu sau: khoi cap nguon 5V, khoi xii ly dugc lap dat khay dung cu dudi yen xe, noi tuong tin hieu dau vao tir cac cam bien, khoi dieu khien trung doi kin, han che duoc va cham, rung xoc va xa thimg tim, khoi dieu khien cac co cau chap hanh va khoi ket nhien lieu (han che chay no cham chap dien) [1], noi giao tiep vdi may tinh Chi tiet thiet ke so mach va che tao phan ciing ECU duoc trinh bay [ 1], [2], do, sir dung phan mem AltiumDesigner de thiet ke mach in Bo mach ciia ECU sau che tao dugc the hien tren hinh Hinh Bo mach cua ECU 2.4 Thiet ke lap dat cac bo phan cua he thdng Cac bd phan dugc lira chgn va che tao neu d tren dugc tinh toan, thiet ke lap dat len xe tao he thong phun xang dien tir hoan chinh.tren nguyen tac trudc het thda man yeu cau hoat dong, ngoai ra, phai anh hudng it nhat den ket cau va bo tri tren xe nguyen ban Hieu chinh theo dao dong P dao dong B ga, dien ap AQ Dieu chinh xung phun n9pi Hinh 5: Vi tri lap dat hong gio Hinh Thuat toan dieu khien phun a che on dinh TAP CHI CO KHI VIET NAM V So - Thing nam 2011 i CUU - TRAO OOI 2.5 Xay dung bp die lieu dieu khien cho ECU T H U * N G H I E M X E D A C A I T I E N Trong he thong phun xang dien t i i kieu gian doan luong xang phun moi chu trinh chi phu thuoc vao thoi gian mo voi phun hay rong xung phun [3] Do rong xung dieu khien voi phun thay doi dua tren nguyen tac su dung mach dem lap trinh timer Khi co tin hieu xung dieu khien phun G timer se bat dau dem va xung phun se chuyen trang thai sang mire cao de nang voi phun len Khi gia tri dem cua timer bang gia tri dat trudc cung la luc xung phun duoc xuong mire thap voi phun duoc dong lai ket thiic qua trinh phun 3.1 Thu nghiem phdng ngh iem Trong khuon kho de tai, ECU duoc thiet ke dieu khien voi phun theo cac che sau: che khoi dong voi ^ nho, che chuyen tiep tir khoi dong sang khong tai, che him nong miy che chuyen tiep tir khong tai sang che co tai, che tang tdc, che dp giam toe, che dp on dinh, che dp cat nhien lieu dong co bi keo, che dp cat nhien lieu qua toe dp, che dp on dinh dieu khien vdng kin vdi I =1 tai trung binh va dong co da du nong Cac che dp dupe thu nghiem va toi uu tren bang thir xe may De thay doi v i dieu chinh cac so lieu qua trinh thi nghiem, ECU dupe dieu khien boi may tinh qua chuong trinh truyen thong giao tiep giua may tinh va vi xu ly (VXL) dupe Met bang ngon ngu lap trinh DELPHI [1] Giao dien cua chuong trinh se nhan du lieu tir VXL de hien thi cac thong so lam viec cua dong co nhu: toe dp, ap suat dudng nap nhiet dp dong co, vi tri budm ga Ngoai du lieu dupe truyen tir may tinh xuong ECU de hieu chinh lupng nhien lieu phun qua trinh thi nghiem Bp du lieu co so dupe xay dung thu nghiem d che dp on dinh (vi tri budm ga, toe dp vong quay co dinh nhiet dp dong co > 80°C) vdi ' =1 de dat hieu qua xu ly thai Idn nhat Khi thu nghiem, vi tri budm ga dupe chia 12 phan deu va toe dp vong quay dong co dupe chia 18 khoang deu, tir 500 den 9000 vg/ph Ket qua dupe trinh bay chi tiet [1] Thuat toan dieu khien o che dp dupe trinh bay tren hinh thuat toan dieu khien cac che khac dupe the hien chi tiet [1] Tren co so thuat toan dieu khien, chuong trinh dieu khien cua ECU dupe lap trinh bang ngon ngu C tren phin mem Code Vision AVR Thiet bi diing qua trinh thu nghiem bao gom: bang thii xe may CD20", tu phan tich thai CEBIT thiet bi tieu hao nhien lieu AVL733S, he thong lay mau thai CVS Xe thir sau da dupe chuyen doi sang su dung he thdng phun xang dien tu, dupe lap dat len bang thir CD20'" (hinh 8) Qua trinh thi nghiem da dac cac thong so the hien cac tinh nang kinh te ky thuat cua xe nhu: cong suat suit tieu hao nhien lieu, kha nang gia toe, che dp khong tai va lupng phat thai cac chat thai doc hai doi chung vdi xe nguyen ban su dung bp che hda Cac thong so cua xe su dung hai loai he thong nhien lieu duoc so sinh thong qua viec xay dung cac dudng dac tinh ngoai o so (voi dai van toe tir 20 - 45 km/h) so (voi dai v an toe tir 35 - 80 km/h), che dp ting toe, che dp khong tai va doi chung theo chu riinh thu ECE R40 cua tieu chuan thai chau Au Ket qua chi tiet dupe trinh bay [1] Dudi day, chi trinh bay mot so ket qua dien hinh Hinh trinh bay ket qua thu nghiem cong suit (NJ va suit tieu thu nhien lieu ( g j cua dong co dac tinh ngoai tai so Cong suit cua xe su dung hai he thong nhien lieu khong co su chenh lech nhieu \iing toe dp thip hon 60 km/h Tuy nhien, su chenh lech dien kha ro ret b \img toe dp cao (> 60 km/h) Xet tren toan dac tinh cong suit cua xe su dung EFI tang 6,1% so vdi sir dung bo che hoa Dieu the hien su uu viet cua EFI so vdi dung bp che hoa Cung tren hinh 9, the hien suit tieu thu nhien lieu tai so Tai ciing mpt toe dp, suit tieu thu ciia xe su dung EFI thip hon su dung bp che hoa Suit tieu thu nhien lieu cua xe su dung bp che hoa dat cue tieu o toe dp 60 km/h Trong do, suit tieu thu nhien lieu su dung he thong phun xang co xu hudng tang theo toe dp dong co Xet chung tren toan dai suit tieu thu nhien lieu, su dung EFI thap hon 9,7% so vdi su dung bp che hoa FT1 TAP CHI CO KHI VIET NAM ••• Sd - Thing nam 2011 Hinh 8: Thii nghiem xe tren bang thii NGHIEN CUU - TRAO DOI dung hai he thong nhien lieu theo chu trinh thir ECE R40 Ket qua thir nghiem duoc tong hop bang Tir ket qua thir nghiem cho thay, sir dung EFI, luong nhien lieu tieu thu giam 7,14% so vdi sir dung bo che hoa Ve phat thai, ham luong CO giam tdi 72,89%, HC tang 56,76%, NOx tang hon 14,28 % so vdi sir dung bo che hoa Phat thai NO tang la hda nhat hon gan vdi vung phat thai cue dai img vdi X = 1,05 - 1,1 [4] x Hinh 9: Cong suat va suat tieu thu nhien lieu d sd Phat thai CO a so sir dung he thong phun xang thap hon rat nhieu so vdi sir dung bo che hoa khi, hinh 10 Xet tren toan dai, ham luong CO sir dung EFI giam 87,7% so vdi sir dung bo che hda Phat thai HC sir dung he thong phun xang b so cao hon so vdi sir dung bo che hoa khi, hinh 10 Trung binh tren toan dac tinh, ham luong HC sir dung EFI tang 35% so vdi sir dung bo che hoa he so du luong khong cao hon [4], Phat thai NO d so duoc minh hoa tren hinh 10 cho thay khong cd su khac biet nhieu giua hai he thong x Can phai chii y rang, co bo xu ly xuc tac phan thi phat thai doc hai se giam dang ke, mdi phat huy triet de tinh uu viet cua EFI [4] Bang 1: Thir nghiem thai theo ECE R40 Tieu Thay Gia tri Thanh chuan doi Che Phun Don vi phan (%) EUR02 hoa xang 1.16 56.76 1.2 0.74 [g/km] HC 0.32 14.28 0.3 0.28 [g/km] NOx 1.48 45.1 1.02 HC + NOx fg/km] 7.82 2.12 -72.89 5.5 [g/km] CO 30.04 31.238 4.12 [g/km] C02 1.82 -7.14 Tieu thu nl [1/100 km] 1.96 11 OIU1U,»VVV pm) 40000 35000 325U0U 75 20000/ -«-Cheh6akhi 15000 * Phun xang ]jj 10000 * 5000 035 40 45 50 55 60 65 70 75 80 Toe d$ xe (km/h) 7500 -^Chehoakhi * Phun xang 7000 ***••- • ca U1,66 5000 EE5500 _— • 5000 35 40 45 50 55 60 65 70 75 Toe d§ xe (km/h) —O V • ~ dp khong tai on dinh (may nong, nhiet > 80°C) Ham lupng CO b che dp giam dang ke (35%) doi voi ddng co EFI, dat 8489 ppm so voi 13076 ppm vdi bp che hda [ 1] Day la mpt uu viet cua xe sir dung EFI chiu kiem soat thai xe dang luu hanh theo Quyet dmh 249/2005/QD -TTg Q che dp ting toe va ham nong may, ket qua nhan dupe ciing rat kha quan [1] He thong EFI co thoi gian ham nong may ng§n hon (2 phut 48 giay so vdi phut 15 giay sir dung bp che hoa khi) Thoi gian tang tdc trung binh tir den 70 km/h b he thong EFI giam 28%, chi mat 25,770 giay so vdi 35,859 giay b bp che hoa Dieu la cdng suat cua dong co duoc cai thien va sue can dudng nap giam dung he thong EFI 3.2 Thu-nghiem tren dudng Nham muc dich kiem tra tinh nang van hanh cua xe dieu kien van hanh thuc te, chiing toi da dua xe thii nghiem chay xe thuc te tren dudng [ 1] Qua trinh kiem tra duoc thuc hien b cac che nhu: khdi dong, khong tai, chay on dinh a toe thap, toe cao, cac qua trinh ting toe, giam toe, cac qua trinh chuyen so Ket qua thir nghiem cho thay, xe khoi dong kha de dang bang ca de va dap no Thoi gian chuyen tiep tir khong tai nhanh sang khong tai 6n dinh kha nhanh va Be so sanh mpt each toan dien ve tinh kinh te va phat 6n dinh Toe dp khong t i i chuan dupe giu ngang bang thai cua xe sir dung he thong EFI va bp che hda khi, vdi toe dp khong t i i cua xe nguyen ban chiing toi da tien hanh thir nghiem doi chung xe sir He thong hoat dong tot cac che dp chuyen' 35 40 45 50 55 60 65 70 75 80 Toe d§ xe (km/h) Hinh 10: So sanh phat thai doc hai d s6 TAP CHI CO KHI VIET NAM So - Thing nam 2011 EEE NGHIEN CUU - TRAO DOI tiep nhu tang toe giam toe va chuyen so, khong co cam giac thieu nhien lieu tang toe dot ngpt (Tiep theo trang 16) che on dinh he thong van dam bao hoat dong on dinh ca o toe cao Tuy nhien o tdc va tai thap thi gia toe cua xe khong cao nhu diing bp che hoa Cac he thong da hoat dong on dinh, phuc \ri tot nhu cau img dung cong nghe CAD/CAM/CNC cua cac co so KET LUAN VA HI ()\( PHAT TRIEN Nghien cuu ket noi va tich hpp mpt so loai may NC va CNC vdi may tinh da dupe tac gia thuc hien tren nhieu loai may gia cong vdi cac he dieu khien khac Ket qua cua nghien cuu da xay dung duoc mo hinh ket noi va dieu khien true tiep DNC, da thuc hien bien doi cac tin hieu vi dieu khien va lap trinh cac tham so truyen thong cua nhieu he dieu khien khac nhau, tu da nang cao duoc kha nang cong nghe cua may dieu khien va gia cong cac bien dang va be mat phuc tap Vdi giai phap nay, co the tich hpp dupe toi da la 256 may gia cong (trong co nhieu he dieu khien khac nhau) vdi phong thiet ke va quan Ly theo he thong DNC/LAN tir may chii Server Day la co so quan trpng cho cac nghien cuu tiep theo de xay dung he thong san xuat linh hoat (FMS) hay san xuat tich hop (CEVI), hoac xay dung chuong ttinh quan ly thiet ke (PDM) va quan tri danh nghiep (ERP) Ket qua nghien cuu cd the trien khai ung dung rang rai cac nha may co hoac cac truong dai hpc va cao dang ve ky thuat o Viet Nam • Voi nhung ket qua da trinh bay o tren, co the nit mpt so ket luan sau: - Be giam tieu thu nhien lieu cung nhu giam thieu nhiem moi trudng thi viec chuyen doi tir he thdng nhien lieu diing bp che hoa sang EFI tren xe may la can thiet - Ba tinh toan thiet ke, che tao va lap dat dupe he thong EFI cho xe Honda SuperDream vdi ket cau nho gon, dam bao khong anh huong tdi tinh cac tinh nang van hanh cua xe va tan dung toi da cac thiet bi hien co cua xe, giam chi phi che tao, chuyen ddi - Thu nghiem chung cho thay, cong suat tang khoang tir 5-K>% theo dac tinh ngoai o so va so 4, [1] Suat tieu hao nhien lieu ciing giam duoc 7,41% thu nghiem theo chu trinh ECE R40 Ngoai ra, cai thien duoc phat thai doc hai, dac biet la giam dang ke (72,89%) CO thai Day la nhung ket qua budc dau kha kha quan Tuy nhien, thoi gian va kinh phi thuc hien bi han che cho nen ket qua dat duoc van cdn mpt so han che nhu may khong boc o tai va toe dp nho va HC thai kha cao so vdi su dung bp che hoa KET LUAN T a i lieu t h a m khao: Lntergreter machine center VMC-85S with the CAD/CA system- Application of CAD/CAM/CNC in training and technology De cd the ap dung ket qua nghien cuu vao thuc te, can transfer at Thai Nguyen University of technology; Duong Xuan phai tiep tuc nghien ciru hoan thien he thong Cu the nhu sau: Truong; Tran Minh Due, Do The Vinh, Hoang Minh Phuc; Scientific journals - Thai Nguyen University, 2009 - Tiep tuc cac thi nghiem de xac dinh cac he sd Integrated CAD/CAM/ERP; Topsolid, Misler 2010 dieu chmh lupng nhien lieu phun theo cac che dp lam Enterprise Resource Planning - Integration withAutomation viec de tir cd the cai thien dupe cac chi tieu kinh te, System; FORTU TOM, Helsinki University of technology, Depamient of Automation and System technology ky thuat va thai cua dong co tot hon nua Integration of CAD/CAM/PDM/MES and ERP Systems; - Can phai lap dat bp xiic tac thai phan K S Kul'ga and R R Gtlfanov - ISSN 1068-798X, Russian de cd the toi uu hoa viec dieu khien lupng phun nhien Engineering Research, 2008, Vol 28, No 2, pp 169—172 Manufacturing Resource Planning with Introduction to lieu theo che dp phan hoi vong kin nham giam thieu toi ERP, CSM and CRM; Singapore, McGraw- Hill International da phat thai doe hai • Editions - Khaltd Sheikh 2002 General Operation's manual for Machining Center, Fanuc 2009 Tai lieu tham khao: Enhanced Modular Controller communication with [ ] Pham Minh Tuan, Nguyen DUY Tien, Le Anh Tuan, NguyenMitsubishi Q PLC overRS232; User's Manual Mitsubishi User's Manual GSK980TD, GSK CNC Equipment Co Ltd The True (2011) Bao cao kit thiic di tai cdp Bp B2009-01-288 [2] Le Dang Dong (2010) Tinh toan, thiet ke he thdng hi phun DNC Max Server and CTMCO Edit V5 User Guide; xang dien tren xe may, Luan van Thac sy Dai hoc Bach khoa Ha CTMCO Integration - June 27, 2005 10 Serial Por Complete ftograrrnning and Noi, 10/2010 [3] Do Van Dung (2004), Trang bi dien & dien tu tren otoCircuits for RS C232 and RS 485; Jan Axelson Links and Networks 11 User's Manual SMUMERLK 802D, 840Di Turning, hien dai, NXB Dai hoc Quoc gia, TP.H6 Chi Minh milling; Siemens System controller 2005 [4] Pham Minh Tuan (2009), Khi thai dong ca va nhiem mdi 12.User's Manual User's Manual HETOENHAIN C onversational trudng, NXB Khoa hoc va Ky thuat ET1 TAP CHI CO KHI VIET NAM ••• Sd - Thang nam 2011 ... Trong he thong phun xang dien t i i kieu gian doan luong xang phun moi chu trinh chi phu thuoc vao thoi gian mo voi phun hay rong xung phun [3] Do rong xung dieu khien voi phun thay doi dua tren... dtrbug ong nap Vdi phun: Dupe chpn la voi phun DEKA Short type, co chieu cao 34,5 mm, trd khang cao khoang 13Q, tia phun nghieng 17°, luu lupng va ap suit phun phii hpp vdi loai xe thi nghiem, hinh... bien nhiet dong co dugc lap ciia xe nguyen thuy, cho lap duoc bom xang vao dat tren canh la t i n nhiet d phia dudi dong co; cam bien ben giong nhu cac xe may phun xang dien tir toe dugc lap dat