Yintoni i-sensor yoxinzelelo lomahluko wesithuthi?
I-differential pressure sensor yi-electronic component echanekileyo esetyenziselwa ukulinganisa umahluko woxinzelelo phakathi kweendawo ezimbini ezahlukeneyo. Yenye yezona zinto zibalulekileyo zokuva kwiimoto zanamhlanje. Ayilinganisi uxinzelelo olupheleleyo kodwa igxile ekufumaneni umahluko woxinzelelo (ΔP = P1 - P2) phakathi kwamanqaku amabini afana "ne-intake port kunye ne-exhaust port" okanye "ephezulu nasezantsi", kwaye iguqula lo mahluko woxinzelelo ube yisignali yombane, ethi emva koko idluliselwe kwiyunithi yolawulo lwenjini (ECU) okanye kwezinye iinkqubo zolawulo ezikwibhodi ukuze kufezekiswe ulawulo oluchanekileyo lokusebenza.
Imisebenzi Engundoqo kunye Neemeko Zokusetyenziswa
I-differential pressure sensor idlala indima "ye-pressure nerve" kwiinkqubo ezininzi eziphambili zeemoto. Iinkqubo zayo eziphambili ziquka:
Ulawulo lokukhutshwa komoya ongcolileyo (ulawulo lokuvuselelwa kwe-DPF): Le yenye yeenjongo zayo eziphambili. I-sensor ifakwe kwiziphelo zangaphambili nangasemva zesihluzi se-particulate (DPF), ijonga umahluko woxinzelelo lomoya ongcolileyo. Xa iidipozithi zekhabhoni zibangela umahluko woxinzelelo ukuba udlule umda, i-ECU iya kuqalisa "inkqubo yokuvuselelwa", inyuse ubushushu bomoya ongcolileyo ukuze kutshiswe iidipozithi zekhabhoni ukuze kuthintelwe ukuvaleka, ukulahleka kwamandla, kunye nokukhutshwa komoya ongcolileyo.
Ukuphucula umlinganiselo wokungenisa injini kunye nomlinganiselo womoya-mafutha: Kwezinye iinkqubo, isetyenziselwa ukulinganisa umahluko woxinzelelo phakathi kwe-intake manifold engasemva kwe-throttle kunye nomoya okanye imibhobho ethile. Idityaniswe nedatha yesensor, ibala ngokungathanga ngqo umthamo wokungenisa, inceda i-ECU ukulawula ngokuchanekileyo umthamo wokufaka amafutha kunye nexesha lokutsha, iphucula ukusebenza kakuhle komlilo.
Ukubeka esweni inkqubo yamafutha: Kwiinjini zedizili zikaloliwe ezixineneyo okanye kwiinkqubo zokujova ipetroli ngqo, ijonga umahluko woxinzelelo kwiindawo ezahlukeneyo zombhobho wamafutha, inika ingxelo yenqanaba le-millisecond kwi-ECU, ifezekisa ulawulo oluchanekileyo lomthamo wokujova ipetroli (ngempazamo ngaphakathi kwe-±0.02ml), ukulinganisela amandla kunye noqoqosho lwamafutha.
Inkqubo yokubuyisela igesi ephumayo (EGR): Ifakwe eziphelweni zevalvu ye-EGR okanye i-EGR cooler, ilinganisa umahluko woxinzelelo ukuze imisele ukuvulwa kwevalvu ye-EGR, nokuba umbhobho uvalekile okanye uyavuza, ukuqinisekisa ubungakanani obuchanekileyo bokujikeleza igesi ye-EGR kwaye inciphisa ngokufanelekileyo ukukhutshwa kwe-nitrogen oxide.
Inkqubo yokulawula ukukhutshwa komoya ophuma kwipetroli (i-EVAP): Isetyenziselwa ukufumanisa ukuba kukho ukuvuza okanye ukuvaleka kwimibhobho yenkqubo yepetroli. Inkqubo idala umahluko omncinci kuxinzelelo, kwaye isensa ibona utshintsho. Ukuba ayihlangabezani nolindelo, inkqubo igwetywa njengenempazamo kwaye isibane sempazamo siyakhanyiswa.
Inkqubo yokumiswa komoya: Kwiimodeli eziphezulu, ijonga umahluko woxinzelelo phakathi kwamacala amabini esipringi somoya, isebenzisana nekhompyutha ekwibhodi ukulungisa umswakama rhoqo ngemizuzwana embalwa, iphucula kakhulu uzinzo lohambo lwesithuthi kwiindlela ezinamaqhuqhuva.
Inkcazo emfutshane yoMgaqo wokuSebenza
Isiseko se-differential pressure sensor yi-diaphragm ebucayi eyahlula i-sensor ibe sisiphelo esinoxinzelelo oluphezulu (H) kunye nesiphelo esinoxinzelelo oluphantsi (L). Xa uxinzelelo olulinganisiweyo lwe-P1 kunye ne-P2 zisetyenziswa kuzo zombini iziphelo, i-diaphragm ifumana utshintsho oluncinci ngenxa yomahluko woxinzelelo. Olu tshintsho lufunyanwa kwaye luguqulwa yindlela yokuguqula yangaphakathi (njengotshintsho lokumelana kwiigeyiji zoxinzelelo, utshintsho kwixabiso le-capacitance, okanye isiphumo se-piezoelectric) ibe sisignali yombane, eyandiswa kwaye ihlawulwe yisekethe, ize emva koko iphume njenge-voltage esemgangathweni, yangoku, okanye isignali yedijithali ukuze i-ECU iyisebenzise.
Impembelelo yeempazamo
Ukuba i-sensor yoxinzelelo lomahluko yonakele okanye isignali ayichanekanga, i-ECU iya kufumana idatha yomahluko woxinzelelo olungachanekanga, nto leyo enokukhokelela ku:
Isibane se-injini siyakhanyisa
I-torque yenjini incinci, amandla ayancipha
Ukubalwa komthamo wokufakwa kwepetroli akuchanekanga, okubangela ukwanda kokusetyenziswa kwepetroli, ukungabikho kwamandla, okanye ukukhutshwa kwepetroli
Inkqubo yokuvuselela i-DPF ayiqhelekanga, inokubangela ukuvaleka okukhulu
Inkqubo ye-EGR isebenza ngendlela engaqhelekanga, ichaphazela ukukhutshwa kunye nokuzinza komlilo
Ukuqukumbela, nangona isenzi soxinzelelo lomahluko sincinci ngobukhulu, siyinxalenye ebalulekileyo eqinisekisa ukusebenza kakuhle, ukuthotyelwa kwemigangatho yokukhupha umbane, kunye nokhuseleko lweemoto.
Ukuba ufuna ukwazi okungakumbi, qhubeka ufunda amanye amanqaku kule sayithi!
Nceda usitsalele umnxeba ukuba ufuna iimveliso ezinjalo.
Zhuo Meng Shanghai Auto Co., Ltd. uzimisele ukuthengisa iMG&MAXUSiinxalenye zeemoto zamkelekile ukuthenga.
