I-Diesel Injector Fuel Injector 0445110502 Bosch ye-Uaz Hunter/Patriot 2.0CD 08

Ukuhlaziywa kwe-Transient states kwama-injection enjini ye-CI kusetshenziswa izindlela zokubona

Abstract.

Inhloso enkulu yocwaningo kwakuwukuchaza ukubambezeleka kwesikhathi somjovo wangempela uma kuqhathaniswa nesikhathi sika-
isignali yokulawula kagesi ye-piezoelectric kanye ne-electromagnetic diesel injectors. Owesibili
Inhloso yalo msebenzi bekuwukuhlolwa komthelela wemingcele evamile yomjovo kulokhu
ukubambezela. Ukuhlaziywa kwakugxile ekuveleni kwezimpawu zokulawula ezifanele ezirekhodwe nge
ukusetshenziswa kwesistimu yokutholwa kwedatha ehluka ngokushesha futhi uma kuqhathaniswa nedatha erekhodwe ngokuphezulu
ikhamera yejubane. Izivivinyo zenziwa ngekamelo levolumu engashintshi yezinhlobo ezahlukene zomjovo
esetshenziswa ezinjinini ezivuthayo ngomjovo oqondile wamafutha edizili. Izivivinyo zenziwa ngaphansi
izimo eziguquguqukayo: ukucindezela kukaphethiloli okuhlukile, ukucindezela komoya emuva kanye nesikhathi somjovo.
1. Isingeniso
Umjovo onengcindezi ephezulu kaphethiloli owuketshezi otholwa ngohlelo lukaloliwe olujwayelekile udinga ukunemba okuphezulu kuphethiloli
ubuningi obulethwa egumbini elivuthayo ngomjovo. Njengamanje kunezinhlobo ezimbili eziyinhloko zama-injection
evame ukusetshenziselwa kokubili injini yokucindezela kanye ne-spark ignition: i-electromagnetic kanye
i-piezoelectric. Nakuba ingcindezi yokusebenza kukaphethiloli ezinhlelweni zokujova uphethiloli iphansi kakhulu
uma kuqhathaniswa nezinhlelo zika-diesel fuel, kodwa izikhathi zokuvula umjovo zicishe zifane kuzo zombili izinhlobo
ukwakhiwa. Lelo qiniso lenza izidingo zifane kuma-injector e-CI kanye ne-SI. Lawa madivayisi kufanele abe
ebonakala ngokusabela okungenzeka ngokushesha kumasiginali okulawula afanelekile kukho kokubili ukusebenza kokuvula nokuvala.
U-Payri et al. [1] iphenye umthelela wobuchwepheshe kazibuthe kanye ne-piezoelectric ku
inqubo yomjovo we-piezoelectric ne-solenoid injection esebenza ngokungaqondile. Kuleso sici se-hydraulic
izici zalungiselelwa yomibili imiklamo bese ziqhathaniswa nezinye. Kulolu cwaningo i
Kusetshenziswe inkomba yesilinganiso sikaphethiloli esisekelwe endleleni ye-Bosch. Imiphumela ezuziwe ibonise ukusebenza ngokushesha kwe
ama-piezo-injection aqhathanise ama-solenoid. Okushoyo ukuthi ukubambezeleka kwabo kwe-hydraulic kuncane. I
umehluko wawukhula ngokuphambene ngokulingana nokucindezela komjovo. Ukubuka kwesibili kusuka
lokho kuhlola kwakuyisivinini sokugeleza esiphezulu sikaphethiloli we-piezo-injector uma kuqhathaniswa nenye idizayini efana nayo
imbobo ububanzi.
Ucwaningo olufanayo lwenziwa ngu-Yu et al. [2], kodwa kuleso simo amafutha akhethelwe uphenyo ayekhona
uphalafini nodizili. Ngokusekelwe kuphela kumasiginali okulawula nokuhluka kwezinga lokugeleza kukaphethiloli ukusuka kumjovo
umlomo wombhobho, ukubambezeleka komjovo ngokumelene nesikhathi sokuvula isignali kagesi kwatholakala. Amanani alokhu
ipharamitha yayingashintshile ngaphandle kwengcindezi yomjovo (kulokhu 60 no-100 MPa) kanye nokubambezeleka
izikhathi ngokulandelana zazingu-0.45 ms we-piezo- kanye no-0.55 ms womjovo we-solenoid. Ukwengeza, ukugeleza okusheshayo
kusuka ku-nozzle yomjovo wokucindezela okuphansi komjovo kwabonwa. Lelo qiniso linikeza izinzuzo ezibalulekile
ukusebenza kwenjini yomlilo njengokwenza i-atomization engcono kanye nokuhwamuka kukaphethiloli. Ababhali abashiwo basebenzise