Yaya firikwensin bugun bugun ke aiki a cikin injin, ƙirar sa

Aiki na yau da kullun na injin mota yana da wuya idan tsarin konewar mai a cikin silinda ya rikice. Domin man fetur ya ƙone da kyau, dole ne ya kasance mai inganci, kuma dole ne a saita lokacin kunna injin daidai. Sai kawai a ƙarƙashin waɗannan yanayi, injin baya ɓarna mai kuma yana iya aiki da cikakken ƙarfi. Idan aƙalla yanayi ɗaya ba ya nan, yuwuwar fashewar ba a keɓe ba. Na'urar bugun bugun mota yana taimakawa hana wannan lamarin.

Konewar fashewa, menene

Fashe cakudewar iskar man da ke cikin injin ana kiransa tsarin konewa mara sarrafawa, wanda sakamakonsa shine “karamin fashewa”. Idan konewar man fetur ya faru a yanayin al'ada, harshen wuta yana motsawa a gudun kusan 30 m/s. Idan fashewa ya faru, saurin harshen wuta yana ƙaruwa sosai kuma zai iya kaiwa 2000 m / s, wanda ke haifar da haɓakar kaya da haɓakar lalacewa na pistons da cylinders. A sakamakon haka, idan mota ba a sanye take da ƙwanƙwasa firikwensin, zai iya bukatar manyan gyare-gyare bayan kawai 5-6 dubu kilomita tafiya.

Me ke haddasa fashewa

Mafi yawan abubuwan da ke haifar da fashewar mai sune:

• low quality da octane yawan man fetur: ƙananan lambar octane, mafi muni da juriya ga fashewa;
• ƙirar injin ɗin da ba ta cika ba: ana iya sauƙaƙe fashewa ta hanyar fasalin fasalin ɗakin konewa, ƙarfin matsawa mai, ƙarancin shimfidar walƙiya, da ƙari mai yawa;
• yanayi mara kyau a ƙarƙashin abin da injin ke aiki: kaya, lalacewa gabaɗaya, kasancewar soot.

Ta yaya firikwensin ƙwanƙwasa ke aiki?

Na'urar firikwensin ƙwanƙwasa yana aiki akan ƙa'idar gyara lokacin kunnawa zuwa ƙimar da aka dawo da konewar haɗin man iskar mai sarrafawa. Ana amfani da firikwensin akan injunan mota irin na allura.

A cikin aiwatar da fashewar man fetur, injin ya fara girgiza sosai. Na'urar firikwensin yana ƙayyade bayyanar fashewar daidai ta hanyar ɗaukar rawar jiki, wanda aka canza zuwa siginar lantarki.

Babban abubuwan da ke cikin firikwensin sune:

• piezoceramic ji na kashi;
• resistor;
• insulator;
• karfe nauyi.

Wayoyin sun shimfiɗa daga ɓangaren piezoceramic zuwa lambobin sadarwa da nauyin karfe. Resistor da ke daidaita ƙarfin ƙarfin wutar lantarki yana samuwa a wurin fitarwa. Abun da ke tsinkayar girgiza kai tsaye shine nauyi - yana yin matsin lamba akan nau'in piezoelectric.

Wuri na yau da kullun na firikwensin ƙwanƙwasa yana kan mahallin motar, tsakanin silinda na biyu da na uku. Na'urar firikwensin ba ya amsa duk girgizar, amma ga waɗanda ba na al'ada ba, wato, a cikin kewayon mitar daga 30 zuwa 75 Hz.

Zaɓin irin wannan wurin na firikwensin shine saboda gaskiyar cewa ya fi dacewa don daidaita aikin kowane Silinda kuma yana kusa da mafi yawan abubuwan fashewa.

Lokacin da firikwensin ya gano jijjiga, mai zuwa yana faruwa:

• nau'in piezoelectric yana canza makamashin girgiza zuwa wutar lantarki, wanda ya karu tare da haɓaka girman girgiza;
• a matakin ƙarfin lantarki mai mahimmanci, firikwensin yana aika umarni zuwa kwamfutar mota don canza lokacin kunnawa;
• tsarin sarrafa injin yana daidaita samar da man fetur kuma yana rage tazarar lokaci kafin kunnawa;
• a sakamakon ayyukan da aka yi, aikin injin ya zo daidai da yanayin al'ada, ana mayar da iko akan konewar cakuda mai iska.

Menene bugun firikwensin

Na'urorin buga bugun mai suna resonant da broadband.

Na'urori masu auna firikwensin watsa shirye-shiryen sune mafi yaduwa, tsarin su da ka'idar aiki ne aka bayyana a cikin wannan labarin. A waje, suna kallon zagaye, a tsakiyar suna da rami don haɗawa da injin.

Na'urori masu auna firikwensin sauti suna da kamanni na waje da na'urori masu auna matsa lamba na mai, suna da madauri mai dacewa da zaren. Suna gyara ba jijjiga ba, amma ƙarfin microexplosions a cikin ɗakin konewa. Bayan gano ƙananan fashewar, mai sarrafawa yana karɓar sigina daga firikwensin. Fihirisar mitar mitar fashe-fashe na kowane mota ya bambanta kuma ya dogara da girman pistons.

Asalin firikwensin rashin aiki

A matsayinka na mai mulki, lokacin da firikwensin ba ya aiki, alamar "Check Engine" yana haskaka dashboard na mota. Ana iya kunna wannan alamar ta ci gaba ko kuma ta ɗan yi haske ta fita waje gwargwadon nauyin nauyi. Na'urar firikwensin ƙwanƙwasa mara kyau ba shi ne cikas ga aikin injin ba, amma ba zai iya faɗakar da direba game da abin da ya faru na fashewa da fara hanyar kawar da shi ba.

Akwai alamu da yawa masu yiwuwa cewa firikwensin bugun ba shi da kyau:

• injin yana yin zafi sosai da sauri, koda kuwa zafin waje yayi ƙasa;
• wani sananne lalacewa a cikin iko da motsin motar idan babu wani sigina na rashin aiki;
• karuwar yawan man fetur ba tare da wani dalili ba;
• faruwar babban zomo a kan tartsatsin tartsatsi.

Yi-shi-kanka ƙwanƙwasa firikwensin dubawa

Idan an sami ɗaya daga cikin alamun rashin aiki na firikwensin ƙwanƙwasa, ya kamata a duba aikin sa. Ana ba da shawarar a duba firikwensin ƙwanƙwasa a cibiyar sabis, amma idan ba ku da lokaci ko kuzari don yin hakan, kuna iya duba firikwensin bugun da kanku.

Da farko kuna buƙatar shirya multimeter ta hanyar saita juriya na gwaji akan shi - game da 2 kOhm. Na gaba, yakamata ku haɗa na'urar zuwa firikwensin kuma auna juriyar aiki. Ba tare da kashe na'urar ba, danna wani abu da sauƙi a saman mahallin firikwensin. Idan a lokaci guda zaka iya ganin karuwa a cikin ƙimar juriya, to, firikwensin yana da al'ada.

Na'urar bugun bugun mai tana da ƙaramin aiki amma muhimmiyar rawa wajen sarrafa aikin injin mota. Santsin tafiya, iko da motsin motar ya dogara da aikin firikwensin. Na'urar firikwensin da ba daidai ba yana da sauƙin ganowa kuma, idan ya cancanta, maye gurbinsa da kanka.