Aikin ƙwanƙwan mota
Babban aikin na'urar bugun bugun mota shine gano yanayin bugun injin, da kuma hana bugun ta hanyar daidaita kusurwar ci gaba da kunna wuta, don kare injin daga lalacewa. "
Na'urar firikwensin ƙwanƙwasa tana canza girgizar injin injin zuwa siginar lantarki waɗanda ake watsawa zuwa sashin sarrafa lantarki (ECU). ECU tana daidaita kusurwar gaba ta kunna wuta gwargwadon siginar da aka karɓa don guje wa ci gaba da faruwar fashewa. Firikwensin ƙwanƙwasa yawanci yana amfani da fasahar yumbura piezoelectric. Lokacin da injin ya girgiza, yumbura yana matsawa kuma yana lalacewa don samar da siginar lantarki, wanda ake aikawa zuwa ECU ta hanyar waya mai kariya don sarrafawa.
Ka'idar aiki na firikwensin ƙwanƙwasa yana dogara ne akan tasirin piezoelectric, lokacin da injin ya ƙwanƙwasa, yumburan piezoelectric a cikin firikwensin ana matse shi, yana haifar da siginar lantarki. Ana aika waɗannan sigina zuwa ECU, wanda ke daidaita kusurwar gaba ta kunna wuta dangane da bayanan da aka adana don hana bugawa. Bugu da kari, ƙwanƙwasa na'urori masu auna firikwensin za su iya fahimtar saurin da matsayi na injin, suna ba da bayanai da yawa don taimakawa haɓaka aikin injin.
Ana shigar da firikwensin ƙwanƙwasa a wani takamaiman wuri a cikin toshe injin, kamar tsakanin silinda 2 da 3 na injin silinda huɗu ko tsakanin silinda 1 da 2 da silinda 3 ko 4. Matsayinsa na hawa yana tabbatar da ɗaukar ƙananan motsin injin da ƙwanƙwasa.
Idan na'urar firikwensin bugun ta kasa, ko da yake ba zai sa injin ya gaza farawa ba, zai haifar da matsaloli kamar jita-jita, hasarar wutar lantarki, tabarbarewar tattalin arzikin man fetur, da fitulun kuskure. Saboda haka, aikin da ya dace na firikwensin ƙwanƙwasa yana da mahimmanci ga aikin injin.
Na'urar bugun bugun mota wata na'ura ce da aka shigar akan toshe injin, galibi ana amfani da ita don gano bugun injin. Akwai nau'ikan firikwensin ƙwanƙwasa da yawa, waɗanda aka fi sani da su sun haɗa da magnetostrictive da yumbu na piezoelectric.
Nau'i da tsarin firikwensin ƙwanƙwasa
Magnetostrictive : ya ƙunshi babban abin maganadisu, maganadisu na dindindin da nada induction. Lokacin da injin ya yi rawar jiki, ƙarfin maganadisu yana canzawa, yana haifar da canji a cikin jujjuyawar maganadisu a cikin induction coil, yana haifar da jawo ƙarfin lantarki.
Ceramic piezoelectric: Lokacin da injin ya girgiza, yumbun da ke ciki yana matse don samar da siginar lantarki. Saboda siginar tana da rauni, galibi ana naɗe kebul ɗin haɗin gwiwa da waya mai kariya.
Piezoelectric resonance: shigar a kan babba na jikin injin, yin amfani da tasirin piezoelectric don canza girgizar injiniya zuwa siginar lantarki. Lokacin da mitar girgiza ƙwanƙwasa ta yi daidai da mitar yanayi na firikwensin, abin mamaki zai faru, kuma babban ƙarfin siginar bugun za a fitar zuwa ECU, gwargwadon abin da ECU zai daidaita lokacin kunnawa don guje wa bugawa.
Yadda ƙwanƙwasa firikwensin ke aiki
Na'urar firikwensin ƙwanƙwasa yana jin girgiza da sautin injin kuma ya canza su zuwa siginar lantarki waɗanda ake aika zuwa sashin sarrafa injin (ECU). ECU tana daidaita kusurwar gaba ta kunnawa bisa ga siginar da aka karɓa don hana faruwar fashewar. Ƙa'idar aiki ta musamman ita ce kamar haka:
Magnetostrictive : girgizar injin yana haifar da motsin maganadisu zuwa motsi, yana canza juzu'in maganadisu a cikin coil induction, yana haifar da haifar da ƙarfin lantarki.
Piezoelectric yumbu: lokacin da injin ya girgiza, ana matse yumburan piezoelectric don samar da siginar lantarki, ECU tana daidaita lokacin kunnawa bisa ga siginar.
Nau'in resonance na piezoelectric: lokacin da mitar girgiza ƙwanƙwasa ta yi daidai da mitar yanayi na firikwensin, abin mamaki yana faruwa, kuma babban ƙarfin siginar buga yana fitowa zuwa ECU.
Matsayin ƙwanƙwasa firikwensin a cikin motoci
Babban aikin firikwensin ƙwanƙwasa shine auna ma'aunin jitter na injin. Lokacin da injin ya haifar da ƙwanƙwasa, ana isar da siginar lantarki zuwa ECU, kuma ECU tana daidaita kusurwar gaba ta hanyar kunna wuta don hana kara bugun. Knock na iya haifar da lalacewar injin, don haka ƙwanƙwasa firikwensin suna taka muhimmiyar rawa wajen kare injin.
"Idan kana son ƙarin sani, ci gaba da karanta sauran labaran kan wannan rukunin yanar gizon!
Da fatan za a kira mu idan kuna buƙatar irin waɗannan samfuran.
Kudin hannun jari Zhuo Meng Shanghai Auto Co., Ltd. ya himmatu wajen siyar da sassan motoci na MG&750 maraba saya.
