Kwenziwe e-China Common Rail Fuel Injector 0 445 120 067 0445120067 for Bosch Diesel Fuel Injector Spare Part

Ama-injection kaphethiloli ohlobo lwezimbobo asetshenziswa kakhulu ezinjinini zikadizili ezinamagumbi okuvutha umjovo oqondile. Zihlukaniswe zibe izinhlobo ezinde nezifushane ngokusho kohlobo lomjovo womjovo kaphethiloli. Inombolo ye-nozzles i-1 kuya ku-8, futhi ububanzi be-nozzle bungaba ngu-0.15 kuya ku-0.7 mm. Umfanekiso 1 ubonisa umjovo omude obuyisela imbobo kaphethiloli osetshenziswa enjinini kadizili, ohlanganisa ivalvu yenaliti, umzimba wevalvu yenaliti, induku yokuphusha, isiphethu esilawula ukucindezela, isikulufu esilawula ukucindezela kanye nomzimba womjovo kaphethiloli. I-diameter ye-nozzle ingu-0.35 mm, i-engeli ye-spray cone ingu-150, kanti ingcindezi yomjovo ingu-17.5 MPa.

Umbhobho wokujova uphethiloli (okuhlanganisa ivalve yenaliti kanye nomzimba wevalvu yenaliti), owaziwa nangokuthi ipheya yesivalo senaliti, wenziwe ngensimbi ye-alloy yekhwalithi ephezulu (GCr15) futhi iphathwa ngokushisa futhi ngokukhetha igaywe ibe ngamapheya, ngakho ayikwazi ezishintshile. Imvume efanayo ingu-0.001 kuya ku-0.0015 mm. Kuyadingeka ukuqinisekisa ukushelela okuhle futhi akukho ukuvuza kwamafutha. I-valve yenaliti inezindawo ezimbili eziqinile. Indawo engaphansi eyikhoyili ibambisana nendawo engaphakathi eyikhoyili ehambisanayo emzimbeni wevalvu, ebizwa ngokuthi i-conical surface evalayo ukuze ivale ingaphakathi lomjovo; indawo ephakathi nendawo ye-conical isendaweni kawoyela ye-annular yomzimba we-valve ukuze imelane ne-axial thrust yokucindezela kawoyela ukwenza i-valve yenaliti ikhuphuke, ebizwa ngokuthi i-pressure-bearing conical surface. Ingxenye engenhla yomzimba we-valve yenaliti ine-groove yamafutha e-annular kanye nembobo yesiteshi sikawoyela, futhi isiphetho esingezansi sinembobo yamafutha kanye nembobo yesifutho. Ipheya yevalvu yenaliti iboshelwa emzimbeni womjovo ngekepisi eliqinile. Umfutho olawula intwasahlobo ucindezela i-valve yenaliti ngokumelene nesihlalo se-valve ngokusebenzisa induku yokuphusha. Indawo yokuxhumana phakathi kwe-valve yenaliti kanye nenduku yokusunduza iyindawo eyindilinga, engavimbela i-valve yenaliti ekukhiqizeni ukucindezela kwe-lateral ngenxa yokugoba kwenduku yokusunduza. Amandla anwebekayo entwasahlobo elawula ukucindezela angalungiswa ngesikulufu esilawula ukucindezela, futhi akhiyelwe nenathi elilawula ingcindezi ngemva kokulungiswa. Umgomo wokusebenza womjovo ovaliwe uboniswa kuMfanekiso 4-46. Idizili enengcindezi ephezulu evela empompeni yomjovo ingena emgodini kawoyela ngomgudu wamafutha emzimbeni womjovo kanye nomzimba wevalvu yenaliti. Njengoba imbobo yesifutho ivalwe yi-valve yenaliti, umfutho wedizili emgodini ukhuphuka ngokushesha. Lapho umfutho we-diesel osebenza endaweni ene-pressure-bearing cone ye-valve yenaliti umkhulu kunamandla anwebekayo we-spring elawula ukucindezela, i-valve yenaliti iyakhuphuka nge-axially, imbobo yesifutho iyavulwa, futhi idizili enengcindezi ephezulu iqala ukufutha phakathi. Igumbi elivuthayo ngokusebenzisa imbobo yesifutho. Ngenxa yomphumela wokugobhoza wembobo yesifutho, udizili ofuthiwe wakha izinhlayiya zenkungu enhle futhi ngokushesha yakhe ingxube evuthayo nomoya. Le nqubo yomjovo iyaqhubeka kuze kube yilapho iphampu yomjovo iyeka ukunikeza uwoyela, futhi lapho ingcindezi kawoyela kumgodi wokujova iphansi kunamandla anwebekayo entwasahlobo elawula ukucindezela, i-valve yenaliti ivala ngokushesha imbobo yesifutho ngaphansi kwesenzo somfutho olawula intwasahlobo, futhi umjovo uyama.

Ingcindezi yomjovo womjovo ovaliwe ikakhulukazi incike ekulayisheni kuqala kwentwasahlobo elawula ingcindezi. Ngakho-ke, ukulungisa ukulayisha kuqala kwentwasahlobo elawula ingcindezi kungashintsha ngokuqondile usayizi wengcindezi yomjovo. Lapho isikulufu sokulungisa siphendulelwa ngaphakathi, ukulayisha kuqala kwasentwasahlobo kuyakhula futhi ingcindezi yomjovo iyanda; ngokuphambene, ingcindezi umjovo kunciphisa. Ukunyuswa kwevalvu yenaliti kunqunyelwe indawo ephansi yokugcina yomzimba womjovo kanye nokulayishwa kuqala kwentwasahlobo elawula ingcindezi. Ngakho-ke, ukuphakama okuphezulu kwevalve yenaliti yomjovo kungu-0.45mm ukuze kuqinisekiswe ukunqanyulwa kwamafutha ngokushesha. Ngesikhathi sokusebenza komjovo, inani elincane likadizili liyaphuma phakathi kwevalve yenaliti nomzimba wevalvu, ligeleza libuyele kusihlungi sikadizili noma ithangi likaphethiloli ngepayipi likawoyela elibuyayo, futhi ngesikhathi esifanayo ligcoba izingxenye zevalve yenaliti. .