Yintoni umsebenzi we-input pressure sensor emotweni
Umsebenzi ophambili we-automotive intake pressure sensor (MAP sensor) kukujonga uxinzelelo olupheleleyo kwi-intake manifold ye-injini kunye nokuguqula i-pressure signal ibe yisignali yombane ukuze idluliselwe kwi-injini ECU (Electronic Control Unit), esebenza njengesiseko esiphambili se-ECU sokubala umthamo we-fuel injection kunye ne-ignition advance Angle.
Ingqiqo yayo yokusebenza ethile kunye nolwandiso olusebenzayo lunokwahlulwahlulwa lube ngamanqaku amabini alandelayo:
Uxinzelelo lwe-input manifold yenjini luya kutshintsha ngesantya esahlukileyo kunye nemithwalo xa unikezelo lwepetroli luhambelana neemeko zokusebenza ezahlukeneyo. Umzekelo, xa ukuvulwa kwe-throttle kukhulu (phantsi komthwalo onzima), uxinzelelo lwe-input manifold luphezulu, kwaye i-ECU yonyusa umthamo we-fuel injection ngokusekelwe kwisignali ye-sensor. Xa ukuvulwa kwe-throttle kuncinci (phantsi komthwalo ophantsi), uxinzelelo luphantsi, kwaye i-ECU inciphisa umthamo we-fuel injection ukuqinisekisa ukuba umlinganiselo womoya-fuel wenjini uhlala ngaphakathi koluhlu olufanelekileyo phantsi kweemeko ezahlukeneyo zokusebenza kunye nokuphucula ukusebenza kakuhle komlilo.
Kwinjini exhotyiswe nge-turbocharging, i-intake pressure sensor inokunceda ekuboneni ukuba uxinzelelo lwe-boost luqhelekile na, ukuthintela i-boost egqithisileyo ukuba ingabangela ukungasebenzi kakuhle kwenjini. Ezinye iimodeli ziya kudibanisa nemiqondiso yazo ukuze ziphucule ulawulo olungasebenziyo kunye nokusebenza kakuhle kokucoca umphunga.
Iimpazamo eziqhelekileyo zezinzwa zoxinzelelo lokungenisa i-automotive (izinzwa ze-MAP) kunye neempawu zesithuthi ezihambelanayo ziphantsi kwezi ndidi zilandelayo:
Impazamo yesekethe yenzwa
Oku kuquka iimeko ezifana nee-short circuits, ii-open circuits, ii-oxidized plugs, kunye nonxibelelwano olubi.
Iimpawu ezifanayo: Isantya senjini esingazinzanga, ukukhawulezisa okubuthathaka, kwaye kwiimeko ezinzima, ukunqamka kunokwenzeka. I-ECU inokurekhoda ikhowudi yempazamo kwaye ikhanyise isalathisi sempazamo yenjini.
Izinto zangaphakathi zesensor zonakele
Ingxaki ephambili ikukusilela kwezinto ezifana netshiphu yokuva uxinzelelo kunye nesekethe yokukhulisa isignali yesensor, nto leyo eyenza kube nzima ukuphendula ngokuchanekileyo isignali yoxinzelelo lwe-intake manifold.
Iimpawu ezifanayo: Ukubalwa okungachanekanga komthamo wokufakwa kwepetroli, okubangela umxube otyebileyo kakhulu okanye obhityileyo. Xa umxube utyebile kakhulu, umsi omnyama uphuma kumbhobho wokukhupha umoya kwaye ukusetyenziswa kwepetroli kuyanda. Xa umxube ubhityile kakhulu, amandla enjini ayancipha kwaye kwenzeka umlilo obuyela umva.
Ukungena komoya kwesensor kuvaliwe okanye kuyavuza
Isensor iqhagamshelwe kwi-input manifold nge-vacuum tube. Ukuba i-vacuum tube ivaliwe, igobile okanye iyavuza, iya kubangela ukuba isignali yoxinzelelo eqokelelwe yisensor ijijeke.
Iimpawu ezifanayo: ukungcangcazela okungasebenziyo, ukulibaziseka kokukhawulezisa. Ezinye iimodeli zinokuba nesantya esingasebenziyo esiphakamileyo kakhulu okanye esiphantsi kakhulu.
Ukushukuma kwesignali yenzwa
Le yimpazamo efihlakeleyo. Isensor ayikaphumeleli ngokupheleleyo, kodwa ixabiso lesiginali yemveliso liyaphambuka kuluhlu oluqhelekileyo.
Iimpawu ezifanayo: Isithuthi asibonisi zimpawu zicacileyo zokungasebenzi kakuhle, kodwa iingxaki ezifana nokusetyenziswa kwepetroli okungaqhelekanga kunye nokuncipha kwamandla zinokubakho. Ezi ngxaki zinokufunyanwa kuphela ngokusebenzisa isixhobo sokuxilonga ukuze kufundwe idatha.
Ukufumanisa ukuba isignali yesivamvo soxinzelelo lokungenisa imoto (i-MAP sensor) iqhelekile na, kukho iindlela ezimbini eziphambili: ukufunda umsinga wedatha ngesixhobo sokuxilonga kunye nokulinganisa i-voltage/ukuxhathisa nge-multimeter. Umsebenzi othile ngolu hlobo lulandelayo:
I. Ukufunda umsinga wedatha ngesixhobo sokuxilonga (esona sisetyenziswa kakhulu nesichanekileyo)
Qhagamshela isixhobo sokuxilonga imoto kwi-interface ye-OBD yesithuthi, faka inkqubo yolawulo lwenjini, khetha umsebenzi othi "Funda iData Stream", kwaye ufumane into ethi "Intake Manifold Absolute Pressure".
Thelekisa amaxabiso oxinzelelo phantsi kweemeko zokusebenza ezahlukeneyo ukuze ubone ukuba awela ngaphakathi koluhlu oluqhelekileyo na (imigangatho ingahluka kancinci phakathi kweemodeli ezahlukeneyo zezithuthi, nceda ujonge incwadi yemiyalelo yokulungisa)
Imeko yokungasebenzi: Ixabiso eliqhelekileyo loxinzelelo ngokubanzi liphakathi kwama-20 nama-40kPa.
Phantsi kwemeko ye-throttle evulekileyo ngokupheleleyo (ukukhawulezisa ngequbuliso), ixabiso loxinzelelo liya kunyuka ngokukhawuleza liye kwi-80 ukuya kwi-100kPa (kufutshane noxinzelelo lwangaphandle lomoya).
Khupha ipayipi ye-vacuum ye-sensor: Ixabiso loxinzelelo liza kunyuka ngoko nangoko, lisondele kuxinzelelo lwangaphandle lomoya, nto leyo ebonisa ukuba i-sensor kunye nombhobho ziqhuba ngendlela eqhelekileyo.
Ukuba amaxabiso omlambo wedatha ahlala engaguqukiyo ngalo lonke ixesha, ephambuka kakhulu kuluhlu oluqhelekileyo, okanye engabonisi mpendulo kutshintsho kwiimeko zokusebenza, oko kubonisa ukuba isignali yesenzi ayiqhelekanga.
2. Linganisa i-voltage nge-multimeter (efanelekileyo ukusombulula iingxaki ngesandla)
Fumana iplagi ye-sensor ye-MAP. Ngokubanzi, i-sensor ineentambo ezintathu: umgca wombane (5V), ucingo oluphantsi komhlaba, kunye nocingo lwesignali.
Jika iswitshi yokutshaja iye kwindawo ethi "VULIWE" (ungaqalisi injini), uze ulinganise ngoluhlu lwe-DC voltage lwe-multimeter:
I-voltage phakathi komgca wombane kunye nocingo lomhlaba kufuneka ibe malunga ne-5V (ukuba i-voltage ingu-0 okanye iphantsi kakhulu, ibonisa ingxaki yombane kumgca okanye kwi-ECU).
I-voltage phakathi komgca wesignali kunye nomgca womhlaba ngokubanzi iphakathi kwe-0.5 ukuya kwi-1.5 volts ngesantya sokungaqhubi. Xa i-throttle ivuliwe ngokupheleleyo, i-voltage iya kunyuka iye kwi-3.5 ukuya kwi-4.5 volts.
Emva kokuqalisa injini, cofa kancinci i-accelerator pedal uze ujonge ukuba i-voltage yomgca wesiginali inyuka ngokuthe chu njengoko ukuvulwa kwe-throttle kusanda. Ukuba i-voltage ayitshintshi, itsiba okanye idlula umgama, oko kubonisa ukuba isiginali yesivamvo ayiqhelekanga.
Iii. Iindlela zoGwebo eziNcedisayo
Qaphela isiganeko sempazamo: Ukuba imoto ibonisa isantya esingazinzanga sokungaqhubeki kakuhle, ukukhawulezisa okubuthathaka, ukusetyenziswa kakhulu kwepetroli, kunye nesibane sempazamo sivuliwe, kwaye ikhowudi yempazamo ifundeka ngolu hlobo "P0106/P0107/P0108" (ikhowudi yempazamo enxulumene nesensor yoxinzelelo lokungenisa), kunokwenzeka kakhulu ukuba isignali yesensor ayiqhelekanga.
Jonga ityhubhu yokufunxa: Khupha ityhubhu yokufunxa eqhagamshelwe kwisensor ukuze ubone ukuba kukho na ukuvaleka, ukuqhekeka okanye ukuqhekeka. Ukuba ityhubhu yokufunxa iyavuza, iya kubangela ukuba isignali yoxinzelelo eqokelelwe yisensor igqwetheke kwaye igwetywe ngendlela engafanelekanga njengomqondiso ongaqhelekanga.
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.
