Isitofu se-Diesel Fuel Injector 0445120343 iyahambelana ne-Bosch injector WEICHAI WD615 WD10 - EU 4

Inkqubo yokusebenza ye-injector

Kwinkqubo yokusebenza, inkqubo yokutofa ye-injector yempompo inokwahlulwa ibe ngamanqanaba amabini: i-injection yangaphambili kunye ne-injection engundoqo, kwaye inokwahlulwa ibe yi-injection yangaphambili, isiphelo se-pre-injection, i-injection engundoqo, ukuphela kwenaliti engundoqo kunye i-high-pressure oil room Kukho iinkqubo ze-5 zokuthatha ioli. Ixesha lokutofa kwamafutha kunye nobuninzi benaliti yesibaso kulawulwa ngokudibeneyo sisincedisi seplunger, ivalve yenaliti yenaliti yamafutha, isibambo senaliti yenaliti yokubuya, isidambisi sevalvu yesibaso kunye nevalve yokulawula i-electromagnetic.
(1) Isitofu sangaphambili
Xa icandelo elithe tye lecam lichukumisa ingalo ye-rocker, inkqubo yolawulo lwe-elektroniki inika amandla kwivalve yokulawula i-electromagnetic, ukuze ivalve yenaliti yevalve yolawulo lombane ihambe iye ngasekhohlo, inqumle indlela phakathi kwegumbi loxinzelelo oluphezulu kunye ne-oyile. Ipaseji yeoyile yoxinzelelo oluphantsi, kwangaxeshanye, ikholamu yeoli yempompo Ngaphantsi kwesenzo sengalo yerocker, iplagi ihla ijonge ezantsi ngokuchasene ne-elastic force yomthombo obuyayo wepompe iplunger yeoli, ukuze uxinzelelo lweoyile kwindawo Igumbi leoli elinoxinzelelo oluphezulu likhuphuka ngokukhawuleza. Xa uxinzelelo lweoyile lunyuka luye kwi-18MPa, ukutyhala okuya phezulu okuveliswe ngamafutha kwindawo yekhowuni embindini wevalve yenaliti yokutofa kukhulu kunokuqina kwangaphambili kwentwasahlobo yokubuya kwevalve yenaliti, kunye nevalve yenaliti. izakutyhalelwa phezulu ukuze iqalise ukutofa kwangaphambili.
(2) Ukuphela kokutofa kwangaphambili
Emva kokuba isitofu sangaphambili siqalisile, inaliti yesibaso iyaqhubeleka ihambela phezulu. Xa i-cam ijika ngaphezulu kwe-1/3 ye-stroke yenaliti ye-fuel, isiphelo esisezantsi senaliti yenaliti ye-fuel ingena kumngxuma wenaliti yenaliti ye-fuel, kunye nomphezulu wenaliti yenaliti yamafutha. ivalve yenaliti yokutofa kwisithuba esincinci. Ngale ndlela, into ebizwa ngokuba "yi-hydraulic gasket" yenziwa phezulu kwivalve yenaliti yenaliti yamafutha, ethintela ivalve yenaliti yenaliti ukuba ingaqhubeki nokunyuka ukuya phezulu, ukuze isixa se-fuel pre-injection silinganiselwe. Njengoko i-pump plunger iqhubeka nokuhla, uxinzelelo lwe-oyile kwigumbi loxinzelelo oluphezulu luyaqhubeka nokunyuka. Xa uxinzelelo lweoyile lufikelela kwixabiso elichaziweyo, emva kokuba i-plunger encedisayo ihambela phantsi phantsi kwesenzo se-fuel-high-pressure, umthamo wegumbi le-oyile ephezulu ngokukhawuleza ukhula ngokukhawuleza. ukwanda, uxinzelelo lwamafutha luyehla ngoko nangoko. Ngeli xesha, ukutyhala okuya phezulu kumphezulu wekhowuni embindini wenaliti yenaliti yepetroli kuyehla ngokufanelekileyo, kwaye inaliti yenaliti yamafutha iphinda isetyenziselwe ukubuya kwentwasahlobo yenaliti yenaliti yamafutha (amandla eelastiki ayanda ngenxa yokucinezelwa kwenaliti yamafutha. i-plunger encedisayo), kunye ne-Oli yokutofa kwangaphambili iphelile.