Iyini inzwa yokucindezela umehluko wemoto?
Inzwa yokucindezela okuhlukile iyisakhi se-elekthronikhi esinembile esisetshenziselwa ukukala umehluko wokucindezela phakathi kwezikhundla ezimbili ezahlukene. Ingenye yezakhi ezibalulekile zokuzwa ezimotweni zanamuhla. Ayikali ingcindezi ephelele kodwa igxile ekuboneni umehluko wokucindezela (ΔP = P1 - P2) phakathi kwamaphuzu amabili njenge-"port yokungenisa kanye ne-exhaust port" noma "upstream and downstream", futhi iguqula lo mehluko wokucindezela ube isignali kagesi, edluliselwa kuyunithi yokulawula injini (ECU) noma kwezinye izinhlelo zokulawula ezisebhodini ukuze kufezwe ukulawulwa kokusebenza okunembile.
Izimo Zomsebenzi Oyinhloko kanye Nesicelo
Inzwa yokucindezela ehlukile idlala indima "ye-pressure nerve" ezinhlelweni eziningi ezibalulekile zezimoto. Ukusetshenziswa kwayo okuyinhloko kufaka phakathi:
Ukuphathwa kokukhishwa komoya ongcolile (ukulawulwa kokuvuselelwa kwe-DPF): Lokhu kungenye yezinhloso zayo eziyinhloko. Inzwa ifakwe emaphethelweni angaphambili nangemuva kwesihlungi sezinhlayiya (i-DPF), iqapha umehluko wengcindezi yangemuva kokukhipha. Lapho amadiphozithi ekhabhoni ebangela umehluko wengcindezi ukuthi udlule umkhawulo, i-ECU izoqala "uhlelo lokuvuselelwa kabusha", ikhulise izinga lokushisa lokukhipha ukuze kushiswe amadiphozithi ekhabhoni ukuze kugwenywe ukuvaleka, ukulahleka kwamandla, kanye nokukhishwa komoya ongcolile.
Ukuthuthukisa isilinganiso sokungenisa injini kanye nesilinganiso somoya-fuel: Kwezinye izinhlelo, isetshenziselwa ukukala umehluko wokucindezela phakathi kwe-incase manifold ngemuva kwe-throttle kanye nomoya noma amapayipi athile. Uma ihlanganiswe neminye imininingwane yenzwa, ibala ngokungaqondile ivolumu yokungenisa, isiza i-ECU ukulawula ngokunembile ivolumu yokujova uphethiloli kanye nesikhathi sokusha, ithuthukisa ukusebenza kahle kokushisa.
Ukuqapha uhlelo lukaphethiloli: Ezinjinini ze-common rail diesel ezicindezelwe kakhulu noma ezinhlelweni zokujova uphethiloli ngqo, iqapha umehluko wokucindezela ezindaweni ezahlukene zombhobho kaphethiloli, ihlinzeka ngempendulo yezinga le-millisecond ku-ECU, ifinyelela ukulawula okunembile kwevolumu yokujova uphethiloli (ngephutha elingaphakathi kuka-±0.02ml), ukulinganisela amandla kanye nokonga uphethiloli.
Uhlelo lokujikeleza kabusha kwegesi yokukhipha umoya (i-EGR): Lufakwe emaphethelweni evalvu ye-EGR noma i-EGR cooler, lulinganisa umehluko wokucindezela ukuze lunqume ukuvulwa kwangempela kwevalvu ye-EGR, kungakhathaliseki ukuthi ipayipi livalekile noma liyavuza, luqinisekisa ivolumu enembile yokujikeleza kabusha kwegesi ye-EGR futhi lunciphisa ngempumelelo ukukhishwa kwe-nitrogen oxide.
Uhlelo lokulawula ukukhishwa komoya ophumayo (i-EVAP): Lusetshenziselwa ukuthola ukuthi kukhona yini ukuvuza noma ukuvaleka kwamapayipi esistimu kaphethiloli. Uhlelo ludala umehluko omncane wokucindezela, futhi inzwa ibona ushintsho. Uma ingahlangabezani nokulindelwe, uhlelo lubhekwa njengolunephutha bese ukukhanya kwephutha kukhanya.
Uhlelo lokumiswa komoya: Kumamodeli aphezulu, luqapha umehluko wokucindezela phakathi kwezinhlangothi ezimbili zesiphethu somoya, lusebenzisana nekhompyutha esebhodini ukulungisa ukumanzisa njalo ngemizuzwana embalwa, luthuthukisa kakhulu ukuzinza kokuhamba kwemoto emigwaqweni enamagquma.
Incazelo emfushane yesimiso sokusebenza
Ingqikithi yenzwa yokucindezela okuhlukile iyi-diaphragm ebucayi ehlukanisa inzwa ibe yisiphetho esinomfutho ophezulu (H) kanye nesiphetho esinomfutho ophansi (L). Lapho ingcindezi elinganisiwe i-P1 kanye ne-P2 isetshenziswa kuzo zombili izinhlangothi, i-diaphragm idlula ekuguqukeni okuncane ngenxa yomehluko wokucindezela. Lokhu kuguqulwa kutholakala futhi kuguqulwa yindlela yokuguqulwa kwangaphakathi (njengokushintsha kokumelana kuma-strain gauges, izinguquko enanini le-capacitance, noma umphumela we-piezoelectric) ibe isignali kagesi, ekhuliswa futhi inxeshezelwe yisekethe, bese ikhishwa njenge-voltage ejwayelekile, yamanje, noma isignali yedijithali ukuze i-ECU iyisebenzise.
Umphumela Wamaphutha
Uma inzwa yokucindezela komehluko yonakele noma isignali inganembile, i-ECU izothola idatha yomehluko wokucindezela okungalungile, okungaholela ku:
Isibani sephutha lenjini siyakhanya
I-torque yenjini ilinganiselwe, amandla ayancipha
Ukubalwa kwevolumu yokufaka uphethiloli akulungile, okuholela ekusetshenzisweni kukaphethiloli okwandisiwe, ukuntuleka kwamandla, noma ukukhishwa kwegesi
Uhlelo lokuvuselela i-DPF alujwayelekile, lungabangela ukuvaleka okukhulu
Uhlelo lwe-EGR lusebenza ngendlela engajwayelekile, luthinta ukukhishwa kwegesi kanye nokuqina kokushisa
Ekuphetheni, yize inzwa yokucindezela okuhlukile incane ngobukhulu, iyisici esibalulekile esiqinisekisa ukusebenza kahle, ukusebenza kahle, ukuhambisana nezindinganiso zokukhishwa komoya, kanye nokuphepha kwezimoto.
Uma ufuna ukwazi okwengeziwe, qhubeka ufunda ezinye izihloko ezikulesi siza!
Sicela usishayele ucingo uma udinga imikhiqizo enjalo.
Inkampani Zhuo Meng Shanghai Auto Co., Ltd. uzibophezele ekuthengiseni i-MG&I-MAXUSizingxenye zezimoto zamukelekile ukuthenga.
