EGR se EGT?

Kune vatyairi vazhinji, kupera gasi recirculation, EGR (Recirculation Exhaust Gas Recirculation) kwenguva pfupi, hachisi chinhu chitsva sezvazviri mumotokari dzavo. Zvisinei, havasi vose vanoziva kuti pasina kupindirana neEGT (kupedza gasi tembiricha) sensors, iyo basa guru nderekugara richiyera kupisa kwemagasi emhepo, haigone kushanda zvakanaka. Kunyangwe ese ari maviri EGR mavharuvhu uye EGT sensors ane hukama neanopedza magasi, basa ravo muhurongwa rakasiyana.

EGR - inoshanda sei?

Muchidimbu, basa reEGR system nderekuwedzera magesi emhepo kumhepo inopinda mumasilinda, izvo zvinoderedza huwandu hweokisijeni mumhepo inopinza uye nekudaro inoderedza mwero wekupisa. Zvakawanda zvedzidziso. Mukuita, iyi nzira inoitika nenzira yekuti magasi emhepo anopihwa mumhepo inopinza kuburikidza neiyo exhaust gas recirculation (EGR) valve iri mugero pakati pekutora uye kupera manifolds. Kana injini iri kushanda pane inozivikanwa se idling, EGR valve yakavharwa. Inovhura chete mushure mekunge dhiraivha yadziya, kureva kana kupisa kwekupisa kuchikwira. Ndeapi mabhenefiti chaiwo ekushandisa EGR system? Kutenda kuEGR, iyo gasi yekupedza yakachena kupfuura yakajairwa mhinduro (kunyangwe injini ichimhanya yakaonda), kunyanya, tiri kutaura nezve kudzikisa zvakanyanya kukuvadza nitrogen oxides.

Nei injini iri kubhuya?

Nehurombo, maEGR masisitimu anogona kukuvara zvakanyanya. Iyo sediment yakaiswa mukati kazhinji kazhinji ndiyo inokonzera kusashanda zvisina kunaka. Somugumisiro, vharuvhu haivhuri kana kuvhara zvakanaka, kana, zvakanyanya, yakavharwa zvachose. Kukanganisa mukushanda kweiyo exhaust gasi recirculation system inogona kuzviratidza, kusanganisira mu "Jerking" uchityaira, kuoma kutanga kweinjini kana kusaenzana kwayo. Saka tinoita sei kana tawana kukuvara kweEGR valve? Mumamiriro ezvinhu akadaro, unogona kuedzwa kuti uichenese kubva kune yakaunganidzwa soot. Zvisinei, maererano nenyanzvi, iyi haisi mhinduro yakanaka kwazvo, sezvo kune ngozi chaiyo yezvakasvibiswa zvakasimba zvinopinda injini panguva yekushanda uku. Saka, mhinduro inonzwisisika ingave yekutsiva EGR valve neimwe itsva. Attention! Inofanira kuenzaniswa nepakutanga.

Tembiricha pasi (permanent) monitoring

Kuyera kwakaringana kwekushisa kwegasi rekupedza kwakakosha pakushanda kwakaringana kweEGR system. Nechikonzero ichi, exhaust gasi tembiricha sensors inoiswa kumusoro kweiyo catalytic converter uye kazhinji zvakare kumusoro kweiyo dizeli particulate sefa (DPF). Ivo vanoendesa ruzivo kune mota controller, kwainoshandurwa kuita chiratidzo chakakodzera chinodzora kushanda kweiyi drive. Nekuda kweizvozvo, huwandu hwemafuta akasanganiswa anopihwa kumasilinda anogona kudzorwa kuitira kuti catalytic converter uye dizeli particulate sefa ishande zvinobudirira sezvinobvira. Kune rimwe divi, kugara uchipedza gasi tembiricha yekutarisa inodzivirira iyo catalyst uye sefa nekudzivirira kupisa uye kupfeka zvakanyanya.

Kana iyo EGT yakundikana...

Kunge EGR mavharuvhu, EGT sensors zvakare inokuvadzwa nenzira dzakasiyana. Somugumisiro wekudengenyeka kwakanyanyisa, zvinogona, pakati pezvimwe zvinhu, zvinogona kukuvadza mukati mekubatanidza wiring kana kukuvadza wiring inotungamira kune sensor. Nekuda kwekukuvara, kushandiswa kwemafuta kunowedzera, uye muzviitiko zvakanyanyisa, catalyst kana DPF inokuvadzwa. Kune vashandisi vemota dzakashongedzerwa neEGT sensors, kune imwezve nhau isingafadzi: haigadzirike, zvinoreva kuti kana ikakundikana dzinofanirwa kutsiviwa neitsva.