Variable turbine geometry - iri nani pane yakagadziriswa geometry?

Mhando dzekutanga dze turbocharger dzaidzorwa nekumanikidzwa kwakaiswa kune wastegate. Pakasvika muganhu wekumanikidzira, vharafu yakavhurika, ichibvumira magasi emhepo akawandisa kuti atize mumhepo. Variable turbine geometry inoshanda zvakasiyana uye nekuwedzera inosanganisira iyo inonzi. zvidzoreso, kureva zvikwasvi. Zviri pamusoro pei? tinopindura!

Chii chinonzi Variable Geometry Turbine?

Sezvambotaurwa pamusoro, iyo turbine geometry muVHT compressors (kana VGT kana VTG zvichienderana nemugadziri) inogona kugadziriswa kana kuchinjika. Pfungwa yacho ndeyekugadzirisa magasi emhepo anobudiswa nejini zvakanyatsonaka sezvinobvira. Iyo VNT turbine ine imwe mhete padivi rinopisa. Makwara (kana zvidzoreso) anoiswa pairi. Iko kona yekutsauka kwavo inodzorwa nevhavhavhavha. Aya mablades anogona kuderedza kana kuwedzera nzvimbo yekuyerera kweflue gasi, iyo inokanganisa kumhanya kwekuyerera kwavo. Izvi zvinobvumira iyo inopisa padivi impeller kuti itenderere nekukurumidza kunyangwe isina kuita.

Iyo yakagadziriswa uye yakasiyana geometry turbocharger inoshanda sei?

Kana injini iri kunonoka kana kuti yakaderera rpm renji (zvinoenderana nekusangana kweinjini uye saizi yeturbine), pane gasi rekupedza simba rakakwana kuchengetedza turbine kuti isaburitse kumanikidza. Turbo lag inoitika kana gasi pedal yakatsikirirwa zvakasimba pane yakagadziriswa geometry turbo units. Iyi inguva yekuzengurira uye hapana kukurumidza kukurumidza. Iyo turbine yakadaro haikwanise kukurumidza kukurumidza.

Variable geometry turbine kushanda

Iyo inoshanduka geometry yeturbine inoreva kuti kunyangwe pakadzika rpm, kana injini ichiburitsa gasi shoma rekupedza, simba rinowedzera rinogoneka rinogona kuwanikwa. Vacuum valve inofambisa chidhiraivho kunzvimbo yekudzikisa kupera kwemhepo uye kuwedzera exhaust velocity. Izvi zvinoguma nekukurumidza kutenderera kwe rotor uye kutenderera kwevhiri rekumanikidza padivi rinotonhora. Ipapo kunyange iyo yekukurumidza kudhinda pane accelerator pasina kuzeza ichashandura mune yakajeka kukurumidza.

Dhizaini yeinosiyana geometry turbocharger uye yakajairika turbocharger

Mutyairi anotarisa turbine kubva kunze anogona kusaona musiyano pakati peimwe mhando neimwe. Iyo inoshanduka geometry yakavanzwa padivi rinopisa uye haizoonekwe neziso. Nekudaro, kana iwe ukanyatsotarisisa, iwe unogona kuona chikamu chakakura kwazvo cheturbine padivi peanopotera manifold. Kuwedzera kudzora kunofanirwa kukwana mukati. Mune mamwe marudzi eVNT turbines, kune zvakare electro-pneumatic control mavharuvhu ane yakawedzera stepper mota, iyo inoonekwa zvakare kana uchiongorora michina.

Turbine - inoshanduka geometry uye zvakanakira zvayo

Imwe yemabhenefiti eiyi system yaunotoziva ndeyekuti inobvisa mhedzisiro ye turbo lag. Pane nzira dzakati wandei dzekubvisa chiitiko ichi, sekupfumisa musanganiswa kana kushandisa mahybrid turbocharger. Nekudaro, inoshanduka turbine geometry inoshanda chaizvo mumotokari dzine injini diki uko torque curve inoda kunge yakakwira nekukurumidza sezvinobvira. Mukuwedzera, kuitira kuti nheyo ine rotor uye compression vhiri iwedzere, injini haifaniri kuchinjwa kusvika pakumhanya kukuru. Izvi zvakakosha kune hupenyu hweyuniti, iyo inogona kuburitsa yakanyanya torque pazasi RPMs.

Turbocharger ine geometry yakasiyana-siyana - zvisingabatsiri

Izvo zvisingabatsiri zveiyo inoshanduka geometry turbine ndeiyi:

• kuoma kukuru kwekugadzirwa kwechigadzirwa chacho pachacho. Izvi zvinoguma nemutengo wekutenga nekugadzirisazve turbine yakadaro;
• iyo vane control system inobatwa nekusvibiswa. 

Kushandiswa zvisina kunaka kwemotokari (uye chaizvo injini pachayo) inogona kupfupisa zvakanyanya hupenyu hweiyo turbocharger. Chero kudonhedza muhurongwa hwekutonhora uye kudzvanywa kunewo zvakakosha pakushanda kwechikamu. Neraki, shanduko geometry inovandudzwa uye kazhinji haidi kutsiviwa.

Zvakaoma kusaona kuti iyo inoshanduka geometry yeturbine inobatsira, iyo yaunonyanya kufarira kana uchityaira uchitenderera neguta uye kupfuura. VNT inobvumidza iwe kudzikisa mhedzisiro ye turbo lag kusvika kunenge zero. Nekudaro, kana paine kukundikana, zvakanyanya kuoma kudzoreredza maparameter ekutanga ezvakagadziridzwa zvinhu. Kunyange zvazvo zvisingadi nguva dzose kutsiviwa nemitsva, yakaoma zvikuru kugadzirisa kupfuura zvinoumba zvechinyakare. Shanduko mukuita inogona kucherechedzwa, semuenzaniso kana mabhureki. Iwe unofanirwa kusarudza kana shanduko yejometri iri nani kumotokari yako pane yakagadziriswa geometry.