Umsebenzi wenzwa yokucindezela kokuthatha imoto
Imisebenzi esemqoka yenzwa ye-automotive air intake pressure sensor ihlanganisa lezi zici ezilandelayo:
Nikeza isignali yomthwalo wenjini : Inzwa yokucindezela oyithathayo inikeza isignali yomthwalo wenjini ku-ECU (Iyunithi yokulawula injini) ngokulinganisa ukushintsha kwengcindezi ku-multifold intake. Lawa masiginali asiza i-ECU ukuthi ilawule ngokunembile ububanzi be-injection pulse kanye nokuvulwa kwe-throttle ukuze ithuthukise ukusebenza kwenjini nokonga kukaphethiloli.
Lawula umjovo kaphethiloli nesikhathi sokubasa : Izinzwa ziguqula izinguquko zengcindezi ku-multifold intake zibe amasiginali kagesi ukuze i-ECU ilungise umjovo kaphethiloli kanye ne-Engeli yesikhathi sokubasa. Lapho injini ikhuphuka, ingcindezi ku-multifold intake iyehla, isignali yokuphuma kwenzwa iyakhuphuka, futhi i-ECU inyusa inani lomjovo kaphethiloli futhi ilibazise i-Engle yokuthungela. Uma kungenjalo, umjovo kaphethiloli uzoncishiswa futhi ukuthungela kuzothuthukiswa.
Lungisa isikhathi sokuvula i-valve yokungena kanye nomjovo kaphethiloli : Enjinini enesistimu yokulawula i-valve ye-elekthronikhi, inzwa yokucindezela i-intake ibona ushintsho lwengcindezi epayipini eliwuthathayo futhi ibale ngokunembile ivolumu yomoya kusilinda ngasinye ukuze kulungiswe isikhathi sokuvula i-valve yokungena kanye nevolumu yomjovo kaphethiloli. Lokhu kusiza ukuthuthukisa ukusebenza kahle namandla enjini.
vikela injini : Inzwa yokucindezela oyithathayo ingakwazi futhi ukubona izimo ezingavamile zokusebenza zenjini, njengokushintsha kwengcindezi engavamile, futhi ithumele amasignali ohlelweni lokulawula ukuvikela injini. Lokhu kusiza ukuvimbela ukulimala kwenjini ngenxa yokugcwala kakhulu noma ezinye izinkinga.
Umgomo wokusebenza : Inzwa yokucindezela okuthathwayo ivamise ukuxhunywa ku-multifold intake ngeshubhu ye-vacuum futhi izwa ushintsho lwe-vacuum endaweni eningi. Njengoba isivinini senjini nomthwalo kushintsha, ingcindezi ku-multifold intake izoshintsha, futhi ukumelana ngaphakathi kwenzwa nakho kuzoshintsha ngokufanele, ngaleyo ndlela kukhiphe isignali ye-voltage. Le signali yamukelwa yi-ECU futhi isetshenziselwa ukulungisa umjovo kaphethiloli nesikhathi sokuthungela.
Umthelela wephutha : Uma inzwa yengcindezi oyithathayo ilimele, ingase iholele esivinini esingazinzile sokungenzi lutho, ukusheshisa okubuthakathaka, ubunzima ekuqaliseni, ukusetshenziswa okuthe xaxa kukaphethiloli nezinye izinkinga zemoto. Ngesikhathi esifanayo, isibani sephutha senjini sizokhanyiswa, futhi ikhodi yephutha ehambisanayo izogcinwa.
Ngakho-ke, ukuhlolwa nokugcinwa njalo kwenzwa yokucindezela kokuthatha kubalulekile ukuze kuqinisekiswe ukusebenza okuvamile kwemoto.
I-Manifold Absolute Pressure Sensor (MAP) iyingxenye ebalulekile enjinini yezimoto eqapha izinguquko zengcindezi endaweni eningi ethathayo futhi iguqule lezi zinguquko zibe amasiginali kagesi ukuze ilawulwe ngokunembile iyunithi yokulawula i-elekthronikhi yenjini (ECU). Inzwa yokucindezela kokuthatha ixhunywe ku-multifold intake ngeshubhu ye-vacuum futhi ingakwazi ukuzwa ukuguqulwa kwe-vacuum ku-multifold intake. Ngesivinini esihlukile senjini nokulayisha, ukumelana ngaphakathi kwenzwa kuzoshintsha, okuzoguqulwa kube isignali kagesi ukuze i-ECU ilungise inani lomjovo kaphethiloli kanye nesikhathi sokubasa.
Isimiso sokusebenza
Isimiso sokusebenza senzwa yokucindezela kokuthatha sisekelwe ekushintsheni kokumelana okubangelwa ukuguqulwa kwengcindezi. Thatha inzwa ye-varistor type inlet pressure njengesibonelo, ingxenye yayo eyinhloko i-silicon diaphragm eyenziwe ngomphumela we-piezoresistive we-semiconductor. Lapho ingcindezi ye-multifold intake isebenza ku-silicon diaphragm, i-diaphragm izoshintsha, okuholela ekushintsheni kwenani layo lokumelana. Lolu shintsho luguqulwa lube isignali kagesi, ekhuliswa futhi idluliselwe ku-ECU. Ngokusekelwe kugesi wesignali eyamukelwe, i-ECU ilawula ngokunembile umjovo kaphethiloli oyisisekelo ukuze uvumelane nezidingo zokushayela ezihlukahlukene.
Izinhlobo nezicelo
Kunezinhlobo eziningi zezinzwa zokucindezela okudlayo, ezivamile i-semiconductor varistor, i-vacuum bellows kanye ne-capacitive. Phakathi kwazo, i-semiconductor varistor isetshenziswa kabanzi ohlelweni lomjovo wohlobo lwe-D ngenxa yezinzuzo zayo zokuphendula okusheshayo, ukunemba okuphezulu, usayizi omncane nokufakwa okuguquguqukayo. Inzwa ye-capacitive isebenzisa i-diaphragm ukuze yakhe into ezwela ukucindezela enevelu ye-capacitance eguquguqukayo, futhi iguqule ukuguqulwa kwengcindezi ibe isignali kagesi ngokulinganisa umjikelezo.
Ukugcinwa nokuxilongwa kwamaphutha
Ukuxilongwa kwephutha kwenzwa yokucindezela okuthathwayo ngokuvamile kuhilela ukuhlola ukuthi isignali yayo yokuphumayo ingaphakathi kwebanga elivamile. Uma isignali yokuphuma kwenzwa ingajwayelekile, ukusebenza kwenjini kungase kwehliswe noma kungazinzi. Ngesikhathi sokulungiswa, hlola ngezikhathi ezithile ukuxhumeka nokuvalwa kwenzwa ukuze uqinisekise ukuthi isebenza kahle.
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