Menene aikin firikwensin crankshaft na abin hawa?
Na'urar firikwensin crankshaft (wanda kuma aka sani da na'urar firikwensin saurin injin) ita ce babbar na'urar firikwensin tsarin sarrafa lantarki na injin. Ana amfani da ita ne musamman don gano matsayin na'urar firikwensin, siginar tsakiya ta sama ta piston, da kuma saurin injin, sannan ana aika sigina zuwa ECU don sarrafa lokacin kunnawa da allurar mai. Yawanci ana sanya wannan na'urar firikwensin a ƙarshen gaba na na'urar firikwensin, ƙarshen gaba na na'urar firikwensin cam, ƙafafun tashi, ko mai rarrabawa. Yana buƙatar yin aiki tare da na'urar firikwensin matsayi na na'urar firikwensin camshaft.
Dangane da ka'idar aikinsa, ana iya rarraba shi zuwa nau'i uku: nau'in bugun maganadisu, nau'in Hall, da nau'in photoelectric: Nau'in bugun maganadisu yana haifar da siginar sine wave ta hanyar haifar da canjin filin maganadisu ta hanyar faifan sigina. Nau'in Hall yana fitar da siginar murabba'in wave ta amfani da ruwan jawo. Nau'in photoelectric yana samar da ƙarfin bugun zuciya ta amfani da watsawa ramin haske. Nau'in Hall yana buƙatar samar da wutar lantarki ta waje ta 5V, kuma nau'in photoelectric yana da sauƙin lalacewa sakamakon lalacewar daidaiton sigina saboda gurɓatar mai. Matsalolin da aka saba gani sun haɗa da tsangwama ga sigina da wayoyin tsufa ke haifarwa, da wahalar farawa saboda firikwensin datti. Yanayi marasa kyau na iya haifar da hasken kuskuren injin kuma ya haifar da ƙarancin ƙarfi ko rashin iya farawa. Hanyar fasaha ta zamani tana nuna yanayin juyin halitta daga siginar analog zuwa gano dijital.
Ka'idar gano na'urar firikwensin matsayi na crankshaft nau'in bugun jini na magnetic
Kamfanin Nissan Kamfanin Na'urar auna bugun jini ta magnetic
An sanya wannan firikwensin matsayin crankshaft a bayan pulley a ƙarshen gaban crankshaft. A ƙarshen baya na pulley, akwai sirara mai zagaye mai ƙananan haƙora (wanda ake amfani da shi don samar da sigina, wanda ake kira diskin sigina), wanda aka sanya tare da pulley ɗin crankshaft akan crankshaft kuma yana juyawa tare da crankshaft. A gefen waje na diskin sigina, akwai haƙori a kowane 4° tare da kewaye. Akwai jimillar haƙora 90, kuma an shirya fitattun haƙora 3 a kowane 120°, jimilla 3. Akwatin firikwensin da aka sanya a gefen diskin sigina janareta ne wanda ke samar da siginar lantarki. Injin samar da sigina yana da kawunan maganadisu 3 da aka kewaye da magnet na dindindin akan coil ɗin induction, inda kan maganadisu ② ke samar da siginar 120°, kuma kawunan maganadisu ① da ③ tare suna samar da siginar kusurwar crankshaft 1°. Kan maganadisu ② yana fuskantar fitowar faifan siginar 120°, kan maganadisu ① da ③ suna fuskantar zoben gear na faifan siginar, tare da bambancin mataki na shigar da kusurwar crankshaft. Mai samar da siginar yana da da'irorin ƙara sigina da siffantawa, da kuma mahaɗin rami huɗu na waje, tare da ramin "1" shine layin fitarwa na siginar 120°, ramin "2" shine layin wutar lantarki don ƙara sigina da siffantawa, ramin "3" shine layin fitarwa na siginar 1°, kuma ramin "4" shine layin ƙasa. Ta wannan mahaɗin, siginar da na'urar firikwensin matsayi na crankshaft ke samarwa ana aika ta zuwa ECU.
Lokacin da injin ya juya, haƙoran da fitowar faifan siginar suna haifar da canji a cikin filin maganadisu da ke ratsa ta cikin na'urar induction, ta haka ne ke samar da ƙarfin lantarki mai canzawa a cikin na'urar induction. Bayan tacewa da siffantawa, sai ya zama siginar bugun jini. Bayan juyawa ɗaya na injin, kan maganadisu ② yana samar da siginar bugun jini guda 3 120°, kuma kan maganadisu ① da ③ kowannensu yana samar da siginar bugun jini 90 (masu canzawa). Tunda ana shigar da kan maganadisu ① da ③ a tazara ta kusurwar crankshaft 3° kuma kowannensu yana samar da siginar bugun jini a kowane 4°, bambancin lokaci tsakanin siginar bugun jini da shugabannin maganadisu ① da ③ suka samar shine daidai 90°. Ana aika waɗannan siginar bugun jini guda biyu zuwa da'irar ƙara siginar da siffantawa don haɗawa, sannan ana samar da siginar kusurwar crankshaft 1°.
Ana shigar da kan maganadisu ② wanda ke samar da siginar 120° a 70° kafin tsakiyar matacce ta sama, don haka ana iya kiran siginar ta da 70° kafin siginar tsakiyar matacce ta sama, wato, yayin aikin injin, kan maganadisu ② yana samar da siginar bugun jini a tsakiyar matacce ta sama ta kowace silinda.
Kamfanin Toyota na'urar firikwensin matsayi na crankshaft
Tsarin TCCS na Kamfanin Toyota yana shigar da na'urar firikwensin matsayi na crankshaft na nau'in magnetic pulse a cikin mai rarrabawa. Ana raba na'urar firikwensin zuwa manyan sassa da ƙananan sassa, ɓangaren sama yana samar da siginar G, ɓangaren ƙasa kuma yana samar da siginar Ne, duka suna amfani da na'urar rotor tare da haƙora suna juyawa don sa coil ɗin induction na janareta siginar ya canza yanayin maganadisu, ta haka yana samar da ƙarfin lantarki mai canzawa a cikin coil ɗin induction, wanda daga nan ake ƙara shi kuma a aika shi zuwa ECU.
Siginar Ne siginar gano kusurwar crankshaft da saurin injin, daidai da siginar 1° na firikwensin matsayi na crankshaft na Kamfanin Nissan. Wannan siginar ana samar da ita ne ta hanyar na'urar rotor (rotor timing N0.2) da aka gyara a ƙasan ɓangaren tare da haƙoran da suka yi daidai da juna 24 da kuma na'urar firikwensin da ke kusa.
Lokacin da na'urar juyawa ta juya, gibin iska tsakanin haƙoran da ɓangaren flange (kan maganadisu) na na'urar jijiya yana canzawa, yana haifar da canji a filin maganadisu da ke wucewa ta na'urar jijiya kuma yana samar da ƙarfin lantarki da aka haifar. Lokacin da haƙoran suka kusanci suka ƙaura daga kan maganadisu, za a sami canji a cikin ƙaruwa da raguwar kwararar maganadisu, ta yadda kowane haƙori zai samar da cikakken siginar ƙarfin AC a cikin na'urar jijiya lokacin da yake wucewa ta kan maganadisu. Na'urar juyawa ta lokaci ta N0.2 tana da haƙora 24, don haka lokacin da na'urar juyawa ta juya da'ira ɗaya (watau, na'urar juyawa ta juya 720°), na'urar jijiya tana samar da siginar ƙarfin AC guda 24. Buga ɗaya na siginar Ne a cikin zagayowar yayi daidai da 30° na juyawar crankshaft (720° ÷ 24 = 30°). Ana samun ƙarin gano kusurwar daidai ta hanyar raba lokacin juyawa 30° ta ECU zuwa sassa 30 daidai, don haka samar da siginar juyawa ta crankshaft 1°. Hakazalika, ana auna saurin injin ta hanyar ECU bisa ga lokacin da ya shude tsakanin bugun siginar Ne guda biyu (juyin juyawar crankshaft 60°). Ana amfani da siginar G don gano silinda da kuma gano matsayin tsakiyar piston na sama, wanda yayi daidai da siginar 120° na firikwensin matsayi na bugun magnetic na Nissan. Siginar G ana samar da ita ne ta hanyar rotor flange (rotor timing No.1) a saman janareta Ne da kuma coils ɗinsa guda biyu masu daidaitawa (G1 sensing coil da G2 sensing coil). Ka'idar samar da siginar iri ɗaya ce da ta siginar Ne. Ana kuma amfani da siginar G a matsayin siginar tunani don ƙididdige kusurwar crankshaft.
Siginar G1 da G2 bi da bi suna gano tsakiyar matacce na saman silinda ta 6 da silinda ta 1. Saboda matsayin janareta na siginar G1 da G2, lokacin da aka samar da siginar G1 da G2, piston ba daidai yake a tsakiyar matacce na sama (BTDC) ba, amma a matsayi na 10° kafin tsakiyar matacce na sama.
Gano firikwensin matsayi na bugun jini na magnetic
Ɗauki na'urar firikwensin matsayi na bugun jini na magnetic pulse position firikwensin da ake amfani da shi a cikin tsarin sarrafa lantarki na injin 2JZ-GE na Crown 3.0 sedan a matsayin misali don kwatanta hanyar gano shi.
Duba juriya na firikwensin matsayi na crankshaft
Kashe maɓallin kunnawa, cire haɗin firikwensin matsayi na crankshaft, sannan a auna ƙimar juriya tsakanin tashoshin firikwensin matsayi na crankshaft tare da saitin juriya na multimeter (Tebur 1). Idan ƙimar juriya ba ta cikin kewayon da aka ƙayyade ba, dole ne a maye gurbin firikwensin matsayi na crankshaft.
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.
