Umsebenzi wenzwa yokushaya imoto
Umsebenzi oyinhloko we-automotive knock sensor ukubona ukushayisa kwenjini, futhi uvimbele ukungqongqoza ngokulungisa i-Angle engaphambili yokushisa, ukuze kuvikelwe injini emonakalweni. .
Inzwa yokungqongqoza iguqula ukudlidliza kwemishini kwenjini kube amasignali kagesi adluliselwa kuyunithi yokulawula kagesi (ECU). I-ECU ilungisa i-engeli ethuthukisiwe yokuthungela ngokuya ngesignali eyamukelwe ukugwema ukwenzeka okuqhubekayo kokuqhunyiswa. Inzwa yokungqongqoza ivamise ukusebenzisa ubuchwepheshe be-piezoelectric ceramic. Lapho injini inyakaza, i-ceramic iyacindezelwa futhi ikhubazekile ukuze ikhiqize isignali kagesi, edluliselwa ku-ECU ngocingo oluvikelekile ukuze lucutshungulwe.
Isimiso sokusebenza senzwa yokugoqa sisekelwe kumphumela we-piezoelectric, lapho injini ingqongqoza, ama-ceramics e-piezoelectric ngaphakathi kwenzwa ayampintsha, okukhiqiza isignali kagesi. Lawa masiginali athunyelwa ku-ECU, elungisa i-Engeli engaphambili yokuvutha ngokusekelwe kudatha egciniwe ukuze kuvinjelwe ukungqongqoza. Ngaphezu kwalokho, izinzwa zokushaya zingakwazi ukuzwa isivinini nendawo yenjini, zinikeze ulwazi oluningi ukusiza ukuthuthukisa ukusebenza kwenjini.
Inzwa yokungqongqoza ivamise ukufakwa endaweni ethile ebhulokhini lenjini, njengaphakathi kwamasilinda angu-2 no-3 omshini wamasilinda amane noma phakathi kwamasilinda angu-1 no-2 kanye nesilinda esi-3 noma esi-4. Ukuma kwayo kuqinisekisa ukuthwebula okubucayi kokudlidliza kwenjini nokungqongqoza.
Uma i-knock sensor ihluleka, nakuba ingeke ibangele injini ukuba ihluleke ukuqala, izodala izinkinga ezifana ne-jitter yenjini, ukuphelelwa amandla, ukuwohloka komnotho kaphethiloli, namalambu amaphutha. Ngakho-ke, ukusebenza kahle kwenzwa yokugoqa kubalulekile ekusebenzeni kwenjini.
I-Automotive knock sensor iyisisetshenziswa esifakwe kubhulokhi yenjini, esetshenziswa kakhulu ukuthola ukushayisa kwenjini. Kunezinhlobo eziningi zezinzwa ezingqongqozayo, ezivame kakhulu ezihlanganisa i-magnetostrictive kanye ne-piezoelectric ceramic.
Uhlobo nesakhiwo senzwa yokushaya
I-Magnetostrictive : iqukethe ingqikithi kazibuthe, uzibuthe ongunaphakade kanye nekhoyili yokungeniswa. Lapho injini idlidliza, ingqikithi kazibuthe iyashintsha, okuholela ekushintsheni kokuguquguquka kazibuthe kukhoyili yokungeniswa, okuholela kumandla ombane kagesi.
I-piezoelectric ceramic : Lapho injini inyakaza, i-ceramic ngaphakathi iyampintsha ukuze ikhiqize isignali kagesi. Ngenxa yokuthi isignali ayinamandla, ikhebuli yokuxhuma ivamise ukusongwa ngocingo oluvikelwe .
i-piezoelectric resonance : efakwe engxenyeni engenhla yomzimba wenjini, ukusetshenziswa komphumela we-piezoelectric ukuguqula ukudlidliza komshini kube amasignali kagesi. Lapho imvamisa yokudlidliza engqongqozayo ihambisana nemvamisa yemvelo yenzwa, i-resonance phenomenon izokwenzeka, futhi i-voltage yesignali yokugoqa ephezulu izophuma ku-ECU, ngokusho ukuthi i-ECU izolungisa isikhathi sokuthungela ukuze igweme ukungqongqoza.
Inzwa yokungqongqoza isebenza kanjani
Inzwa yokugoqa izwa ukundindizela nemisindo yenjini bese iziguqulela kumasignali kagesi athunyelwa kuyunithi yokulawula injini (ECU). I-ECU ilungisa i-engeli ethuthukisiwe yokuthungela ngokuya ngesignali eyamukelwe ukuvimbela ukwenzeka kokuqhunyiswa. Umgomo othize wokusebenza umi kanje:
I-Magnetostrictive : ukudlidliza kwenjini kubangela ukuthi inkaba kazibuthe igudluke, iguqule ukuguquguquka kazibuthe kukhoyili yokungeniswa, okuholela emandleni e-electromotive.
i-piezoelectric ceramic : lapho injini inyakaza, i-piezoelectric ceramic iyampintsha ukuze ikhiqize isignali kagesi, i-ECU ilungisa isikhathi sokuthungela ngokwesiginali.
Uhlobo lwe-piezoelectric resonance : lapho imvamisa yokudlidliza kokungqongqozayo ihambisana nemvamisa yemvelo yenzwa, kwenzeka into ezwakalayo, futhi i-voltage yesiginali yokugoqa ephezulu iphuma ku-ECU.
Indima yezinzwa ezingqongqozayo ezimotweni
Umsebenzi oyinhloko wenzwa yokushaya ukukala izinga le-jitter yenjini. Lapho injini ikhiqiza i-knock, isignali kagesi idluliselwa ku-ECU, futhi i-ECU ilungisa i-Angle yokuthungela ngokufanele ukuze kuvinjelwe ukungqongqoza okuqhubekayo. I-Knock ingabangela ukulimala kwenjini, ngakho-ke izinzwa zokushaya zidlala indima ebalulekile ekuvikeleni injini .
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