Opel Astra

A cikin tsarin sarrafa injin lantarki (ECM), binciken lambda yana da alhakin lura da yawan iskar oxygen a cikin iskar gas. Ana amfani da bayanan firikwensin da ECU ya karɓa don daidaita wadatar man mai zuwa ɗakunan konewa na silinda.

Ma'auni mai wadata ko ƙwanƙwasa yana ba ku damar saita madaidaicin adadin man fetur da iskar oxygen don cikakken konewa da ingantaccen aiki na rukunin. A cikin tsarin shaye-shaye na Opel Astra, na'urar firikwensin iskar oxygen yana tsaye a kan mai sauya catalytic.

Na'urar da ka'idar aiki na binciken lambda

Binciken lambda na Opel Astra na zamani na zamani na zamani na zamani ne na nau'in watsa shirye-shirye tare da kwayar galvanic ta hanyar zirconium dioxide. Zane na binciken lambda ya ƙunshi:

• Jiki.
• Na'urar lantarki ta farko tana cikin hulɗa da iskar gas ɗin da ke shayewa.
• Wutar lantarki ta ciki tana cikin hulɗa da yanayi.
• Tantanin halitta galvanic mai ƙarfi (zirconium dioxide) wanda ke tsakanin lantarki guda biyu a cikin akwatin.
• Dumama zaren don ƙirƙirar yanayin aiki (kimanin 320 ° C).
• Karu akan kwandon shayar da iskar gas.

Zagayowar aiki na binciken lambda ya dogara ne akan yuwuwar bambance-bambancen da ke tsakanin na'urorin lantarki, waɗanda aka lulluɓe da wani Layer na musamman na iskar oxygen (platinum). Electrolyte na yin zafi yayin da ake tafiya da cakuɗen iska mai ɗauke da iskar oxygen da iskar iskar gas, sakamakon haka wutar lantarki mai ƙarfi daban-daban ke bayyana akan na'urorin. Mafi girman ƙwayar iskar oxygen, ƙananan ƙarfin lantarki. Ƙarfin wutar lantarki mai girma yana shiga cikin ECU ta hanyar na'ura mai sarrafawa, inda shirin ya ƙididdige matakin jikewa na tsarin shayewa tare da iskar oxygen dangane da ƙimar wutar lantarki.

Bincike da maye gurbin iskar oxygen

Rashin "oxygen" yana haifar da matsaloli tare da injin:

• Yana ƙara yawan iskar gas mai cutarwa
• RPMs suna raguwa zuwa aiki
• Ana samun karuwar yawan man fetur
• Rage haɓakar abin hawa

Rayuwar sabis na binciken lambda akan Opel Astra matsakaicin kilomita 60-80. Gano matsala tare da firikwensin iskar oxygen yana da wahala sosai - na'urar ba ta kasawa nan da nan, amma a hankali, yana ba da ƙimar ECU da ba daidai ba. Abubuwan da ke haifar da lalacewa da wuri na iya zama ƙarancin mai mai inganci, aikin injin tare da abubuwan sawa na rukunin silinda-piston, ko daidaitawar bawul ɗin da bai dace ba.

Ana yin rikodin gazawar firikwensin oxygen a cikin ma'aunin ƙwaƙwalwar ajiyar ODB, ana samar da lambobin kuskure, kuma hasken "Check Engine" a kan panel ɗin kayan aiki yana haskakawa. Rushe lambobin kuskure:

• P0133 - Karatun ƙarfin lantarki ya yi yawa ko ƙasa da yawa.
• P1133 - Amsa a hankali ko gazawar firikwensin.

Ana iya haifar da lalacewar na'urar firikwensin ta hanyar gajerun hanyoyin kewayawa, fashewar wayoyi, iskar oxygen da tasha na lambobi, gazawar iska (yayan iska a cikin layin shan) da injectors marasa aiki.

Kuna iya bincika aikin firikwensin kai tsaye ta amfani da oscilloscope da voltmeter. Don duba, auna ƙarfin lantarki tsakanin wayan bugun jini (+) - akan Opel Astra h waya baki da ƙasa - farar waya. Idan akan allon oscilloscope girman siginar dakika ɗaya ya bambanta daga 0,1 zuwa 0,9 V, to, binciken lambda yana aiki.

Dole ne a tuna cewa ana duba firikwensin iskar oxygen akan injin da aka ɗumama har zuwa yanayin aiki a rago.

Hanyar sauyawa

Don maye gurbin na'urar firikwensin oxygen tare da Opel Astra h, ana buƙatar maɓalli banda 22. Kafin aiki, dole ne a cire tashar baturin "mara kyau" kuma ya ba da damar abubuwan da suka shafi tsarin shayewa suyi sanyi.

• Latsa matse toshewar kayan aiki zuwa tasha na binciken lambda.

• Cire haɗin kayan aikin wayoyi daga injin.

• Cire murfin garkuwar zafi mai jujjuyawar catalytic akan mahallin.

• Cire goro da ke tabbatar da binciken lambda tare da maɓalli zuwa "22".

• Cire firikwensin iskar oxygen daga dutsen da yawa.

• An shigar da sabon binciken lambda a tsarin baya.

Lokacin maye gurbin, duk aikin dole ne a gudanar da shi akan injin sanyaya a zafin jiki wanda bai wuce 40-50 ° C ba. Abubuwan haɗin da aka zana na sabon firikwensin ana bi da su tare da madaidaicin zafin jiki na musamman wanda zai iya jure yanayin zafi don hana "danna" da hana danshi shiga. Hakanan ana maye gurbin O-rings da sababbi (yawanci ana haɗa su a cikin sabon kayan).

Ya kamata a duba wayoyi don lalacewa mai lalacewa, karya da oxidation a kan tashoshin sadarwa, wanda, idan ya cancanta, an tsaftace shi da takarda mai laushi. Bayan shigarwa, ana bincikar aikin binciken lambda a cikin nau'ikan injunan aiki daban-daban: mintuna 5-10 a ƙananan rago, sannan ƙara saurin gudu zuwa matsakaicin mintuna 1-2.