Cigaban Ciki: Lokacin da yake murzawa, birki da digo...
Abubuwa
A yau, samar da injin da iska ya zama kimiyya ta gaske. Inda bututu mai shigowa tare da tace iska ya isa sau ɗaya, a yau ana amfani da haɗaɗɗiyar haɗakar abubuwa da yawa. A cikin nau'in cin abinci mara kyau, wannan na iya zama sananne da farko ta hanyar asarar aiki, gurɓataccen gurɓataccen abu, ɗigon mai.
babban dalili irin wannan rikitarwa shine tsarin sarrafa injin na zamani tare da tsarin kula da iskar gas na baya . Ana ba da injuna na zamani da iska ta hanyar kayan abinci da yawa ( wani lokaci kuma shine "chamber mai shiga" ). Amma yayin da ƙwarewar fasaha ke ƙaruwa, haka kuma haɗarin lahani yana ƙaruwa.
tsarin cin abinci da yawa
Matsakaicin abin sha ya ƙunshi simintin aluminium tubular yanki ɗaya ko baƙin ƙarfe mai launin toka . Dangane da adadin silinda, ana haɗa bututu huɗu ko shida a cikin nau'in ci. Suna haɗuwa a tsakiyar wurin shan ruwa.
Akwai ƙarin abubuwa da yawa a cikin nau'in abin sha:
| - Abubuwan dumama: ana amfani da su don fara zafi da iskar sha. – Sarrafa swirl dampers: suna kuma jujjuya iska. – Gaskets da yawa - EGR bawul mai haɗawa |
Digression: Nitrogen oxides daga sharar gas
| Ana haifar da gurɓataccen abu lokacin da aka ƙone mai kamar man fetur, dizal ko iskar gas. Amma ba carbon monoxide ba, carbon dioxide, ko ɓangarorin soot ne ke haifar da babbar matsala. . Babban mai laifi an halicce shi kwatsam yayin konewa a cikin injin: ana gano abin da ake kira nitrogen oxides a matsayin babban dalilin gurɓacewar iska ... amma nitrogen oxides ko da yaushe kafa a lokacin da wani abu da aka ƙone da oxygen a cikin iska. Iska shine kawai 20% oxygen . Yawancin iskar da muke shaka shine ainihin nitrogen. Kashi 70% na iskar da ke cikin yanayi ta ƙunshi nitrogen.. Abin takaici, wannan iskar gas, kanta ba ta da ƙarfi kuma ba ta iya ƙonewa, tana haɗuwa a ƙarƙashin matsanancin yanayi a cikin ɗakunan konewa na injin don samar da ƙwayoyin cuta daban-daban: NO, NO2, NO3, da dai sauransu - abin da ake kira "nitrogen oxides" . wadanda suke haduwa su kafa kungiya NOx .Amma saboda nitrogen ba shi da ƙarfi sosai, da sauri ya yi asarar atom ɗin oxygen ɗin da ke makale. . Sannan su zama abin da ake ce da su " masu tsattsauran ra'ayi cewa oxidize duk abin da suka hadu da juna. Idan an shaka, suna lalata ƙwayar huhu, wanda a mafi munin yanayi zai iya haifar da ciwon daji. Don rage yawan iskar nitrogen oxides a cikin nau'in cin abinci, ana amfani da bawul na EGR. |
Matsalar EGR bawul
Ana amfani da bawul ɗin EGR don dawo da iskar gas da aka kona zuwa ɗakin konewa . Don yin wannan, ana ciyar da iskar iskar gas ta hanyar cin abinci. Injin yana tsotse iskar gas da aka riga aka kona kuma ta sake kone su. Ba ya shafar aikin injin. . Duk da haka, wannan fasaha yana rage yawan zafin jiki na tsarin konewa. Ƙananan zafin jiki a cikin ɗakin konewa, ƙananan nitrogen oxides suna samuwa.
Duk da haka, akwai kama daya. Ana ajiye barbashi daga iskar gas ba kawai a cikin bawul ɗin EGR ba. Har ila yau, a hankali suna toshe duk nau'in abin sha. Wannan zai iya haifar da cikakken toshe layin. . Bayan haka, motar ta daina samun iskar kuma a zahiri ba za a iya sarrafa ta ba.
gyaran kayan abinci da yawa
Cikakkiyar zubewa saboda ma'adinan shaye-shaye shine mafi yawan sanadin rashin cin abinci da yawa. . Har zuwa kwanan nan, an maye gurbin gabaɗayan ɓangaren kawai, amma koyaushe tare da babban farashi .
A halin yanzu , duk da haka, akwai masu bada sabis da yawa waɗanda ke bayarwa tsaftataccen ruwan sha .
| Akwai hanyoyi da yawa don wannan: Wasu masu ba da sabis suna ƙone nau'in abin sha tare da tsantsar iskar oxygen ko matsewar iska. Wasu sun dogara da maganin sinadarai wanda a cikinsa ke narkar da daskararren carbon daga soot a cikin acid. Waɗannan masu ba da sabis yawanci suna ba da "tsohuwar don sake ƙera" nan da nan ko sake gina nasu nau'in ci. Wani sabon nau'in kayan abinci yana tsada ko'ina daga £150 zuwa sama da £1000. Gyara yawanci yana kashe ƙasa da 1/4 na farashin sabon nau'in kayan abinci. |
Dabarar, duk da haka, tana cikin cikakkun bayanai: Cire nau'in abin sha yana buƙatar ɗan gogewa, ƙwarewar da ta dace, da kayan aikin da suka dace. Idan tarin kayan abinci ya lalace yayin cirewa, ana iya maye gurbinsa da sabon sashi kawai.
Tsaftace nau'in abin sha koyaushe yana haɗa da kiyaye bawul ɗin EGR.
Matsalar swirl flaps
Yawancin ɗakunan shaye-shaye suna da murɗa ... shi ƙananan ɓangarorin da aka yi da filastik mai jure zafi . Suna yin fiye da buɗewa da rufe mashigai na mashigar abubuwan da ake amfani da su. Suna samar da swirl, wanda, sama da duka, ya kamata ya inganta konewa a cikin injin. . Duk da haka, matsalar da vortex dampers shi ne sukan karye sannan su fada cikin mashin din injin .
Idan kun yi sa'a , piston zai murƙushe damper ɗin filastik kuma ya share shi da iskar gas. Amma ko da a wannan yanayin, sassansa suna shigar da catalytic Converter a baya. Idan ba ka yi sa'a ba, karyewar damper na swirl zai haifar da mummunar lalacewar injin ko da a baya.
Don haka shawararmu ita ce: Nemo idan akwai kayan da aka keɓe don abin hawan ku.
Misali, suna samuwa ga mutane da yawa Injin BMW. A cikin kit ɗin, ana maye gurbin sashes masu motsi da murfi masu wuya. Tasirin ya fi muni kaɗan, amma kuna samun matsakaicin amincin aiki. Rubutun ba za su iya fita su fada cikin sashin injin ba. Don haka, ana dogaro da kai daga abubuwan ban mamaki marasa daɗi.
