Yintoni umsebenzi we-sensor ye-crankshaft yesithuthi?
I-crankshaft sensor (ekwaziwa ngokuba yi-injini speed sensor) yi-core sensor yenkqubo yolawulo lwe-elektroniki yenjini. Isetyenziswa kakhulu ukubona indawo ye-crankshaft, isignali esembindini ephezulu ye-piston, kunye nesantya senjini, kwaye ithumela imiqondiso kwi-ECU ukulawula ukutsha kunye nexesha lokujova ipetroli. Le sensor idla ngokufakwa kwisiphelo esingaphambili se-crankshaft, isiphelo esingaphambili se-camshaft, i-flywheel, okanye i-distributor. Kufuneka isebenze ngokubambisana ne-camshaft position sensor.
Ngokomgaqo wayo wokusebenza, inokwahlulwa ibe ziintlobo ezintathu: uhlobo lwe-magnetic pulse, uhlobo lwe-Hall, kunye nohlobo lwe-photoelectric: Uhlobo lwe-magnetic pulse luvelisa isignali ye-sine wave ngokubangela utshintsho lwe-magnetic field ngediski yesignali. Uhlobo lwe-Hall lukhupha isignali ye-square wave ngokusebenzisa i-trigger blade. Uhlobo lwe-photoelectric luvelisa i-pulse voltage ngokusebenzisa i-light hole transmission. Uhlobo lwe-Hall lufuna umbane wangaphandle we-5V, kwaye uhlobo lwe-photoelectric lusengozini yokuwohloka kokuchaneka kwesignali ngenxa yongcoliseko lweoyile. Iimpazamo eziqhelekileyo ziquka ukuphazamiseka kwesignali okubangelwa ziintambo ezalupheleyo, kunye nobunzima bokuqala ngenxa ye-sensor engcolileyo. Iimeko ezingaqhelekanga zinokubangela ukukhanya kwempazamo yenjini kwaye zibangele amandla angonelanga okanye ukungakwazi ukuqala. Indlela yetekhnoloji yanamhlanje ibonisa umkhwa wokuvela ukusuka kwiimpawu ze-analog ukuya ekufumaneni kwedijithali.
Umgaqo wokufumanisa i-sensor yesikhundla se-crankshaft yohlobo lwe-magnetic pulse
I-Nissan Company magnetic pulse type crankshaft position sensor
Le sensor yesikhundla se-crankshaft ifakwe ngasemva kwe-pulley kwicala elingaphambili le-crankshaft. Kwicala elingasemva le-pulley, kukho idiski ebhityileyo ejikelezayo enamazinyo amancinci (asetyenziselwa ukuvelisa imiqondiso, ebizwa ngokuba yi-signal disc), efakwe kunye ne-crankshaft pulley kwi-crankshaft kwaye ijikeleza nge-crankshaft. Kwicala elingaphandle lediski yesignali, kukho izinyo rhoqo nge-4° ecaleni komjikelo. Kukho amazinyo angama-90 ewonke, kwaye iiprotrusions ezi-3 zicwangciswe kwi-120° nganye, zizonke zi-3. Ibhokisi ye-sensor efakwe kumda wediski yesignali yi-signal generator evelisa isignali yombane. I-signal generator ineentloko ezintathu zemagnethi ezijikelezwe yimagnethi esisigxina kwi-induction coil, apho intloko yemagnethi ② ivelisa isignali ye-120°, kwaye iintloko zemagnethi ① kunye ③ zidibene zivelisa isignali ye-angle ye-crankshaft ye-1°. Intloko yemagnethi ② ijongene nokuvela kwe-120° yediski yesignali, intloko yemagnethi ① kunye ne-③ zijongene neringi yegiya yediski yesignali, kunye nomahluko wesigaba sofakelo lwe-angle ye-crankshaft. Ijenereyitha yesignali ineesekethe zokukhulisa nokwakha isignali, kunye nesixhumi sangaphandle esinemingxuma emine, apho umngxuma "1" ungumgca wokuphuma kwesignali ye-120°, umngxuma "2" ungumgca wamandla wesekethe yokukhulisa nokwakha isignali, umngxuma "3" ungumgca wokuphuma kwesignali ye-1°, kwaye umngxuma "4" ungumgca womhlaba. Ngalesi sixhumi, isignali eveliswa sisiva sendawo ye-crankshaft idluliselwa kwi-ECU.
Xa injini ijikeleza, amazinyo kunye nokuvela kwediski yesignali kubangela utshintsho kumandla emagnethi adlula kwi-induction coil, ngaloo ndlela ivelisa amandla atshintshanayo e-electromotive kwi-induction coil. Emva kokucoca nokubumba, iba yisignali ye-pulse. Emva kokujikeleza kanye kwenjini, intloko yemagnethi ② ivelisa imiqondiso ye-pulse eyi-3 120°, kwaye iintloko zemagnethi ① kunye ③ nganye ivelisa imiqondiso ye-pulse engama-90 (etshintshanayo). Ekubeni iintloko zemagnethi ① kunye ③ zifakelwe kwi-angle ye-crankshaft ye-3° kwaye nganye ivelisa isignali ye-pulse rhoqo nge-4°, umahluko wesigaba phakathi kwemiqondiso ye-pulse eveliswa ziintloko zemagnethi ① kunye ③ yi-90° ngqo. Ezi signali zimbini ze-pulse zithunyelwa kwisekethe yokukhulisa kunye nokubumba isignali ukuze kwenziwe i-synthesis, kwaye emva koko kwenziwa isignali ye-angle ye-crankshaft ye-1°.
Intloko yemagnethi ② evelisa isignali ye-120° ifakwe kwi-70° ngaphambi kwesikhungo esifileyo esiphezulu, ngoko ke isignali yayo inokubizwa ngokuba yi-70° ngaphambi kwesibonakaliso sesikhungo esifileyo esiphezulu, oko kukuthi, ngexesha lokusebenza kwenjini, intloko yemagnethi ② ivelisa isignali yepulse kwiziko elifileyo eliphezulu lesilinda nganye.
I-Toyota Company magnetic pulse type crankshaft position sensor
Inkqubo ye-TCCS yeNkampani yeToyota ifaka i-sensor ye-crankshaft position sensor yohlobo lwe-magnetic pulse kumthengisi. I-sensor yahlulwe yangamacandelo aphezulu nasezantsi, inxalenye ephezulu ivelisa isignali ye-G, kwaye inxalenye esezantsi ivelisa isignali ye-Ne, zombini zisebenzisa i-rotor enamazinyo ajikelezayo ukuze kubangele ukuba i-induction coil ye-signal generator ibe notshintsho lwe-magnetic flux, ngaloo ndlela ivelisa amandla e-electromotive alternating induced kwi-induction coil, eya kuthi emva koko ikhuliswe kwaye ithunyelwe kwi-ECU.
Isignali yeNe sisignali yokubona i-engile ye-crankshaft kunye nesantya senjini, esilingana nesignali ye-1° ye-sensor ye-crankshaft position ye-magnetic pulse yeNkampani. Esi signali siveliswa yi-rotor (i-rotor ye-timing ye-N0.2) eqiniswe kwinxalenye esezantsi enamazinyo angama-24 ahlukeneyo kunye ne-coil yokuva ekufutshane.
Xa i-rotor ijikeleza, umsantsa womoya phakathi kwamazinyo kunye nenxalenye yeflange (intloko yemagnethi) ye-sensing coil uyatshintsha, nto leyo ebangela utshintsho kwintsimi yemagnethi edlula kwi-sensing coil kwaye ivelise amandla e-electromotive abangelwayo. Xa amazinyo esondela kwaye emka kwintloko yemagnethi, kuya kubakho utshintsho ekwandeni nasekuncipheni kwe-magnetic flux, ukuze izinyo ngalinye livelise isignali epheleleyo ye-AC voltage kwi-sensing coil xa idlula kwintloko yemagnethi. I-N0.2 timing rotor inamazinyo angama-24, ngoko ke xa i-rotor ijikeleza isangqa esinye esipheleleyo (oko kukuthi, i-crankshaft ijikeleza ngama-720°), i-sensing coil ivelisa imiqondiso ye-AC voltage engama-24. I-pulse enye yesignali ye-Ne kumjikelo ilingana nama-30° okujikeleza kwe-crankshaft (720° ÷ 24 = 30°). Ukufunyanwa kwe-angle echanekileyo ngakumbi kufezekiswa ngokwahlula ixesha lokujikeleza lama-30° yi-ECU kwiindawo ezingama-30 ezilinganayo, ngaloo ndlela kuvelisa isignali yokujikeleza kwe-crankshaft eyi-1°. Ngokufanayo, isantya senjini silinganiswa yi-ECU ngokusekelwe kwixesha elidluleyo phakathi kwee-pulses ezimbini zesignali ye-Ne (ukujikeleza kwe-crankshaft engama-60°). Isignali ye-G isetyenziselwa ukuchonga ii-cylinders kunye nokufumanisa indawo ephezulu embindini we-piston, elingana nesignali ye-120° ye-sensor ye-magnetic pulse crankshaft position sensor ye-Nissan. Isignali ye-G iveliswa yi-flange rotor (i-rotor ye-timing enguNombolo 1) ngaphezulu kwe-Ne generator kunye nee-coil zayo ezimbini ezilinganayo (i-coil yokubona ye-G1 kunye ne-coil yokubona ye-G2). Umgaqo wokuvelisa isignali uyafana nowesignali ye-Ne. Isignali ye-G ikwasetyenziswa njengesignali yokubhekisa ekubaleni i-angle ye-crankshaft.
Imiqondiso ye-G1 kunye ne-G2 ngokulandelelanayo ibona iziko eliphezulu elifileyo lesilinda yesi-6 kunye nesilinda yoku-1. Ngenxa yendawo eveliswa yijenereyitha yesignali ye-G1 kunye ne-G2, xa kuveliswa imiqondiso ye-G1 kunye ne-G2, i-piston ayikho ngqo kwiziko eliphezulu elifileyo (BTDC), kodwa ikwindawo eyi-10° ngaphambi kweziko eliphezulu elifileyo.
Ukufunyanwa kwe-magnetic pulse crankshaft position sensor
Thatha i-magnetic pulse crankshaft position sensor esetyenziswa kwinkqubo yolawulo lwe-elektroniki yenjini ye-2JZ-GE ye-Crown 3.0 sedan njengomzekelo ukubonisa indlela yokubhaqa kwayo.
Ukujonga ukuxhathisa kwesenzi sendawo ye-crankshaft
Cima iswitshi yokutsha, susa isixhumi sesensor yendawo ye-crankshaft, kwaye ulinganise amaxabiso okuxhathisa phakathi kwee-terminals zesensor yendawo ye-crankshaft ngokuseta ukuxhathisa kwe-multimeter (Itheyibhile 1). Ukuba amaxabiso okuxhathisa awekho ngaphakathi koluhlu oluchaziweyo, isensor yendawo ye-crankshaft kufuneka itshintshwe.
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.
