Motar oxygen firikwensin.
Firikwensin iskar oxygen na mota shine maɓalli na firikwensin ra'ayi a cikin tsarin sarrafa injin EFI, kuma shine babban sashi don sarrafa fitar da hayakin mota, rage gurɓataccen muhalli na mota da haɓaka ingancin konewar mai na injin mota.
Akwai nau'ikan firikwensin oxygen iri biyu, zirconia da titanium dioxide.
Oxygen firikwensin shine amfani da abubuwa masu mahimmanci na yumbu don auna yuwuwar iskar oxygen a cikin tanderun dumama daban-daban ko bututun shaye-shaye, ƙididdige ma'aunin iskar oxygen ta hanyar ka'idar ma'aunin sinadarai, don saka idanu da sarrafa rabon iskar mai da ke ƙonewa a cikin tanderun, don tabbatar da cewa ingancin samfur da ƙayyadaddun ƙayyadaddun ƙayyadaddun abubuwan aunawa, ana amfani da su sosai a cikin kowane nau'in konewar kwal, konewar mai, konewar iskar gas da sauran sarrafa yanayin tanderu.
Ana amfani da firikwensin iskar oxygen don sarrafa tsarin sarrafa martani na na'urar allurar mai don gano iskar oxygen a cikin iskar iskar gas da kuma yawan iskar man fetur, don saka idanu kan ka'idar iskar man fetur (14.7: 1) konewa. a cikin injin, da kuma aika sakonnin amsawa zuwa kwamfutar.
Ƙa'idar aiki
Na'urar firikwensin iskar oxygen yana aiki daidai da baturi, tare da sinadarin zirconia a cikin firikwensin yana aiki kamar electrolyte. Ka'idar aiki ta asali ita ce: a ƙarƙashin wasu yanayi (zazzabi mai zafi da platinum catalysis), ana amfani da bambancin maida hankali na oxygen tsakanin ciki da waje na Hao oxide don samar da bambanci mai yuwuwa, kuma mafi girman bambancin maida hankali, mafi girman yiwuwar bambanci. . Abun da ke cikin iskar oxygen a sararin samaniya shine kashi 21%, iskar iskar da ake fitarwa bayan konewar da aka tattara a zahiri baya dauke da iskar oxygen, sannan iskar da ake samu bayan konewar cakudewar dilute ko iskar gas da rashin wuta ke haifarwa ya kunshi iskar oxygen, amma har yanzu yana da ƙasa da iskar oxygen da ke cikin yanayi.
A karkashin catalysis na babban zafin jiki da platinum, iskar oxygen da aka haɗe zuwa na'urar firikwensin oxygen yana cinyewa, don haka ana haifar da bambancin wutar lantarki, ƙarfin fitarwa na cakuda mai daɗaɗɗa yana kusa da 1V, kuma cakuda mai narkewa yana kusa da 0V. Dangane da siginar wutar lantarki na firikwensin iskar oxygen, ana sarrafa rabon iskar man fetur don daidaita girman bugun bugun allurar mai, don haka ikon lantarki na firikwensin oxygen shine mabuɗin firikwensin don auna man fetur. Ana iya siffanta firikwensin iskar oxygen a yanayin zafi mai yawa (ƙarshen ya kai sama da 300 ° C) kuma yana iya fitar da wutar lantarki. Yana amsa mafi sauri ga canje-canje a cikin cakuda a kusan 800 ° C.
Tips
Zirconium dioxide oxygen firikwensin yana nuna canji na maida hankali na cakuda mai ƙonewa ta hanyar canjin ƙarfin lantarki, kuma titanium dioxide oxygen firikwensin yana nuna canji na cakuda mai ƙonewa ta hanyar canjin juriya. Tsarin kula da lantarki ta amfani da firikwensin oxygen na zirconia ba zai iya sarrafa ainihin ƙimar iskar man da ke kusa da ka'idar iskar man fetur lokacin da yanayin aikin injin ya lalace, yayin da firikwensin oxygen na titanium dioxide kuma zai iya sarrafa ainihin ƙimar iskar mai kusa da ka'idar. rabon iskar man fetur lokacin da injin aikin injin ya lalace.
Ƙarar allurar (injection pulse wide) wanda aka daidaita ta naúrar sarrafawa a cikin ɗan gajeren lokaci bisa ga siginar firikwensin iskar oxygen ana kiransa gyaran man fetur na ɗan gajeren lokaci, wanda aka sarrafa ta hanyar ƙarfin fitarwa na firikwensin oxygen.
Gyaran man fetur na dogon lokaci shine ƙimar da aka ƙayyade ta hanyar gyare-gyaren sashin kulawa na tsarin bayanan aiki na naúrar bisa ga canjin canjin gyaran man fetur na gajeren lokaci.
Laifin gama gari
Da zarar oxygen firikwensin kasa, da kwamfuta na lantarki man allura tsarin ba zai iya samun bayanai na oxygen taro a cikin shaye bututu, don haka ba zai iya mayar da martani sarrafa iska-man rabo, wanda zai kara da engine man fetur amfani da shaye gurbatawa. kuma injin zai bayyana rashin kwanciyar hankali da sauri, rashin wuta, tashin hankali da sauran abubuwan mamaki. Don haka, dole ne a cire ko maye gurbin laifin a kan lokaci [1].
Laifin guba
Guba na firikwensin iskar oxygen abu ne mai yawa kuma mai wahala don hana gazawa, musamman yawan amfani da motocin man fetur dalma, har ma da sabon firikwensin iskar oxygen, na iya yin aiki da 'yan kilomita kaɗan kawai. Idan ƙananan gubar gubar ne kawai, to, yin amfani da tanki na man fetur mara gubar zai iya kawar da gubar da ke saman na'urar firikwensin oxygen kuma ya mayar da shi zuwa aiki na yau da kullum. Duk da haka, sau da yawa saboda yawan zafin jiki na shaye-shaye, gubar ta shiga cikin cikinta, yana hana yaduwar iskar oxygen, yana sa na'urar firikwensin oxygen ba ta da tasiri, a lokacin kawai za a iya maye gurbinsa.
Bugu da ƙari, guba na siliki na na'urori masu auna iskar oxygen kuma abu ne na kowa. Gabaɗaya, silica ɗin da aka samar bayan konewar sinadarai na silicon da ke cikin man fetur da mai da mai, da iskar siliki da ke fitowa ta hanyar rashin amfani da siliki na roba don rufe gas ɗin da ba daidai ba zai sa na'urar firikwensin oxygen ta gaza, don haka yakamata a yi amfani da mai mai inganci da mai mai mai. .
Lokacin gyarawa, dole ne a zaɓi daidai da shigar da gaskets na roba, kar a yi amfani da abubuwan kaushi da wakilai na anti-stick ban da waɗanda masana'anta suka ayyana akan firikwensin, da sauransu. Ana shigar da firikwensin iskar oxygen, ko mai ko ƙura da sauran abubuwan da ke cikin na'urar firikwensin oxygen, wanda zai hana ko toshe iskar da ke waje zuwa cikin cikin na'urar firikwensin iskar oxygen, ta yadda siginar fitar da iskar oxygen ba ta daidaita ba. ECU ba zai iya gyara rabon iskar man fetur cikin lokaci ba. Samar da ajiyar iskar carbon yana bayyana ne a matsayin karuwar yawan man fetur da kuma karuwa mai yawa a cikin fitarwa. A wannan lokacin, idan an cire ruwan lemun tsami, zai koma aiki na yau da kullun.
Fatsawar yumbura
yumbu na firikwensin iskar oxygen yana da wuya kuma yana da rauni, kuma bugawa da abubuwa masu wuya ko busa da iska mai ƙarfi na iya sa ta tagudu da kasawa. Don haka, ya zama dole a yi taka-tsan-tsan wajen magance matsalolin da kuma maye gurbinsu cikin lokaci.
An kona wayar toshewar
An kashe wayar juriya ta dumama. Don na'urar firikwensin oxygen mai zafi, idan wayar juriya ta wuta ta ƙone, yana da wahala a sanya firikwensin ya isa yanayin zafin aiki na yau da kullun kuma ya rasa aikinsa.
Cire haɗin layi
An katse da'irar ciki na firikwensin oxygen.
Hanyar dubawa
Duban juriya mai zafi
Cire filogi na kayan aikin firikwensin iskar oxygen, kuma yi amfani da multimeter don auna juriya tsakanin sandar hita da sandar ƙarfe a cikin tashar firikwensin oxygen. Ƙimar juriya ita ce 4-40Ω (koma zuwa umarnin takamaiman samfurin). Idan bai dace da ma'auni ba, maye gurbin iskar oxygen.
Ma'aunin ƙarfin amsawa
A lokacin da ake auna irin ƙarfin lantarki na firikwensin iskar oxygen, yakamata a cire filogin na'urar firikwensin oxygen, sannan a zaro wata siririyar waya daga tashar fitarwa ta wutar lantarki ta firikwensin iskar oxygen bisa ga zanen da'irar na ƙirar, kuma sa'an nan a toshe a cikin toshe kayan aiki. Za'a iya auna wutar lantarki daga layin gubar yayin aikin injin (wasu samfura kuma na iya auna ƙarfin martani na firikwensin iskar oxygen daga soket gano kuskure). Misali, jerin motocin da Kamfanin Toyota Mota ke kera na iya auna karfin martani na firikwensin iskar oxygen kai tsaye daga tashar OX1 ko OX2 a cikin soket gano kuskure).
Lokacin da ake auna ƙarfin amsawar na'urar firikwensin oxygen, yana da kyau a yi amfani da nau'in multimeter mai nuna alama tare da ƙananan kewayo (yawanci 2V) da haɓaka mai girma (juriya na ciki fiye da 10MΩ). Takamammen hanyoyin ganowa sune kamar haka:
1. Juya injin zafi zuwa yanayin aiki na yau da kullun (ko gudu a 2500r / min bayan farawa don 2min);
2. Haɗa mummunan alƙalami na tashar wutar lantarki ta multimeter zuwa E1 ko madaidaicin lantarki na baturin a cikin soket ɗin gano kuskure, da kuma tabbataccen alkalami zuwa jack OX1 ko OX2 a cikin soket ɗin gano kuskure, ko zuwa lambar | a kan filogin igiyoyin igiya na firikwensin oxygen.
3, bar injin ya ci gaba da gudana a cikin gudun kusan 2500r/min, kuma duba ko ma'aunin voltmeter zai iya jujjuya baya da gaba tsakanin 0-1V, da yin rikodin adadin maƙallan voltmeter na juyawa a cikin 10s. A karkashin yanayi na al'ada, tare da ci gaba na sarrafa amsawa, ƙarfin amsawar na'urar firikwensin oxygen za ta canza kullum a sama da ƙasa 0.45V, kuma ƙarfin amsa ya kamata ya canza ba kasa da sau 8 a cikin 10s ba.
Idan bai wuce sau 8 ba, yana nufin cewa na'urar firikwensin iskar oxygen ko tsarin kula da amsa ba ya aiki yadda ya kamata, wanda zai iya haifar da tarin carbon a saman na'urar firikwensin oxygen, ta yadda hankali ya ragu. Don wannan karshen, ya kamata a yi amfani da injin a 2500r / min na kimanin minti 2 don cire ajiyar carbon a saman na'urar firikwensin oxygen, sa'an nan kuma duba ƙarfin amsawa. Idan ma'aunin voltmeter yana ci gaba da canzawa sannu a hankali bayan an iya cire carbon, yana nuna cewa firikwensin oxygen ya lalace, ko kuma da'irar sarrafa amsawar kwamfuta ta yi kuskure.
4, oxygen firikwensin bayyanar launi duba
Cire na'urar firikwensin iskar oxygen daga bututun shayewa kuma duba ko ramin huɗa akan mahallin firikwensin ya toshe kuma tushen yumbu ya lalace. Idan lalacewa, maye gurbin iskar oxygen.
Hakanan za'a iya tantance kurakuran ta hanyar lura da launi na saman ɓangaren firikwensin iskar oxygen:
1, saman launin toka mai haske: wannan shine launi na al'ada na firikwensin oxygen;
2, farin saman: lalacewa ta hanyar gurbataccen silicon, dole ne a maye gurbin firikwensin oxygen a wannan lokacin;
3, saman launin ruwan kasa (kamar yadda aka nuna a Hoto 1): lalacewa ta hanyar gurɓataccen gubar, idan mai tsanani, dole ne kuma ya maye gurbin na'urar firikwensin oxygen;
(4) Baƙar fata: abin da ke haifar da iskar carbon, bayan kawar da kuskuren ajiyar carbon na injin, za a iya cire ajiyar carbon akan firikwensin oxygen gabaɗaya ta atomatik.
Idan kana son ƙarin sani, ci gaba da karanta sauran labaran kan wannan rukunin yanar gizon!
Da fatan za a kira mu idan kuna buƙatar irin waɗannan samfuran.
Kudin hannun jari Zhuo Meng Shanghai Auto Co., Ltd.ya himmatu wajen siyar da sassan motoci na MG&MAUXS marabasaya.
