Menene firikwensin lokaci
Na'urori masu auna lokaci sune muhimman abubuwan lantarki na mota kuma ana amfani da su a fannoni da yawa don auna adadi na zahiri kamar matsayin da saurin abubuwa.
A fannin kera motoci, galibi ana amfani da shi ne don gano lokacin bawul na injin don tantance lokacin kunna wuta mafi kyau.
Akwai nau'ikan na'urori masu auna lokaci daban-daban, waɗanda aka rarraba su zuwa nau'ikan magnetoelectric da Hall, suna samar da siginar sine wave da square wave bi da bi. Gabaɗaya, ya haɗa da na'urori masu auna hoto da na'urori masu auna maganadisu.
Na'urar firikwensin matakin daukar hoto tana fitar da sigina na matakai daban-daban ta hanyar juya bangaren siginar da kuma kunna ko kashe na'urar daukar hoto bisa ga watsawa ko toshe haske.
Nau'in Hall a cikin na'urori masu auna maganadisu yana amfani da tasirin Hall, yayin da nau'in magnetoelectric yana amfani da ƙa'idar magnetic induction. Lokacin da rotor na siginar ke juyawa, canjin da ke cikin da'irar magnetic yana haifar da wani ƙarfin lantarki mai canzawa a cikin coil na induction.
Ka'idar aikinsa ita ce cimma aikin ta hanyar gano matsayi da juyawa na kusurwar camshaft. Na'urar gano ciki tana iya jin abubuwan ƙarfe da ke kusa. Idan babu abubuwa na ƙarfe, da'irar LC tana yin sauti kuma ƙarfin fitarwa yana kololuwa. Lokacin da wani abu na ƙarfe ya kusanci, ana haifar da kwararar eddy a cikin na'urar ganowa, inductance na na'urar yana canzawa, da'irar layi ɗaya ta LC tana warware daidaito, kuma ƙarfin fitarwa yana raguwa. Canjin yana daidai da nisan abin ƙarfe. Ana gano canjin lokaci ta hanyar auna canjin ƙarfin fitarwa.
Lokacin bawul yana nufin kusurwar da ake buɗewa da rufe bawulolin shiga da fitar da hayaki na injin dangane da juyawar crankshaft. Daidaitaccen lokacin bawul yana da mahimmanci ga aikin injin, tasirin wutar lantarki, tattalin arzikin mai da fitar da hayaki.
Na'urar firikwensin mataki tana da alhakin sa ido kan daidaiton matakin jirgin ƙasa na bawul. Idan wani abu ya faru na rashin daidaituwa, za a kunna ƙararrawa kuma hasken lalacewar injin zai haskaka.
Na'urori masu auna lokaci, waɗanda kuma su ne kalmomin gabaɗaya na na'urori masu auna matsayi na camshaft da na'urori masu auna matsayi na crankshaft, muhimmin tushe ne don tantance lokacin kunna injin.
Na'urar firikwensin matakin camshaft tana gano matsayin juyawa na camshaft kuma tana shigar da sigina zuwa ECU, wanda shine babban siginar don sarrafa kunna wuta.
Na'urar firikwensin matsayi na crankshaft tana gano kusurwar injin da kuma tsakiyar piston ɗin da ya mutu a sama, sannan tana aika sigina zuwa kwamfutar injin don sarrafa lokacin kunnawa da allurar mai. Hakanan shine tushen sigina don auna saurin injin.
A wasu fannoni, na'urori masu auna lokaci, bisa ga ƙa'idar auna lokaci, suna fitar da sigina zuwa abubuwa kuma suna ƙididdige bayanan matsayin abubuwan ta hanyar auna bambancin lokaci tsakanin siginar da aka fitar da kuma wacce aka nuna.
Ana amfani da shi sosai a fannoni kamar sarrafa kansa na masana'antu, sararin samaniya, kula da lafiya, da kuma fasahar robot, kuma yana iya taimakawa wajen sarrafa sarrafa robot mai cin gashin kansa, sarrafa kewayawa na motocin sufuri, da kuma gano cutar lafiya, da sauransu.
Firikwensin mataki muhimmin sashi ne na tsarin sarrafa injin mota na zamani, wanda ya ƙunshi na'urori masu auna matsayi na crankshaft da na'urori masu auna matsayi na camshaft. Firikwensin matsayi na crankshaft yana da alhakin tattara saurin injin da siginar kusurwa ta crankshaft, yana ba da ma'anar lokaci don kunna wuta da allurar mai. Firikwensin matsayi na camshaft yana tabbatar da aiwatar da daidaitaccen sarrafa allurar mai da sarrafa fashewa ta hanyar gano matsayin tsakiyar matsewar silinda mafi girma [3] [8]. Dukansu suna aiki tare ta hanyar daidaitawa ta hanyar daidaitawa ta lokaci, wanda yake da mahimmanci musamman a lokacin farawa kuma yana buƙatar daidaito daidai na lokacin kunna wuta na farko [6]. Wannan rukunin firikwensin gaba ɗaya ana kiransa "firikwensin lokaci" saboda aikin sarrafawa gabaɗaya akan matakin jirgin bawul da lokacin kunna wuta
Rashin na'urar firikwensin mataki na iya haifar da jerin matsaloli.
Matsala ta farko ita ce wahalar kunna injin. Na'urar firikwensin mataki tana buƙatar samar wa ECU da bayanai game da matsayin crankshaft, kuma ECU tana ƙididdige lokacin kunna wuta da adadin allurar mai bisa ga wannan bayanin. Idan na'urar firikwensin mataki ta yi matsala, ba za ta iya samar da bayanai masu inganci ba. ECU ba za ta iya sarrafa kunna wuta da allurar mai daidai ba, wanda hakan ke sa fara injin ya yi wahala ko ma ba zai yiwu ba.
Sannan akwai rashin kwanciyar hankali. A cikin yanayi na yau da kullun, na'urar firikwensin mataki tana lura da matsayin crankshaft, tana bawa na'urar sarrafa injin damar daidaita lokacin kunna wuta da ƙarar shiga don tabbatar da saurin injin mai santsi. Da zarar na'urar firikwensin mataki ta lalace, bayanan da aka aika zuwa ECU ba daidai ba ne, kuma ikon ECU akan injin zai karkace. Sakamakon haka, saurin rashin kwanciyar hankali zai kasance mara tabbas, kuma matsaloli kamar girgizar aiki da saurin canzawa na iya faruwa.
Hakan zai haifar da ƙarancin saurin gudu. Lokacin da abin hawa ya yi sauri, na'urar firikwensin mataki tana buƙatar samar da bayanai na ainihi da kuma daidai kamar matsayin crankshaft, ta yadda ECU za ta iya daidaita dabarun kunna wuta da kuma allurar mai cikin gaggawa don biyan buƙatun hanzarin abin hawa. Idan matsala ta faru, bayanan ba daidai ba ne, ECU ba zai iya yin gyare-gyare daidai ba, ƙarfin injin zai shafi, saurin gudu zai yi rauni, har ma da jin kamar zai iya faruwa, wanda ke shafar ƙwarewar tuƙi.
Bugu da ƙari, hasken zai kunna. Idan tsarin gano matsalar motar ya gano matsalar na'urar firikwensin mataki, zai haifar da lambar matsala, kuma hasken matsalar injin da ke kan dashboard ɗin zai haskaka, yana tunatar da mai motar cewa akwai matsala da motar.
A ƙarshe, yawan amfani da mai yana ƙaruwa. Matsalar na'urar firikwensin mataki na sa ECU ta kasa sarrafa adadin allurar mai daidai. Yawan allurar mai na iya zama ko dai ya yi yawa ko ya yi ƙasa, wanda ke haifar da ƙonewa mara cikakke kuma ba a mayar da man zuwa wutar lantarki yadda ya kamata ba, wanda hakan ke ƙara yawan amfani da mai.
A ƙarshe, matsalar na'urorin auna karfin jini na mataki-mataki suna da tasiri sosai ga ababen hawa. Idan matsalolin da ke sama suka faru, ya zama dole a duba na'urar auna karfin jini nan take, sannan idan ya cancanta, a gyara ko a maye gurbinta domin mayar da motar zuwa yanayin da ta saba.
"Idan kana son ƙarin bayani, ci gaba da karanta sauran labaran da ke wannan shafin!
Don Allah a kira mu idan kuna buƙatar irin waɗannan kayayyaki.
Kudin hannun jari Zhuo Meng Shanghai Auto Co., Ltd. ta kuduri aniyar sayar da MG&MAXUSsassan mota maraba siya.
