Na'urar da ƙa'idar aiki na DMRV

Don tabbatar da ingantaccen tsarin konewar mai da kuma bin ka'idojin muhalli da aka ayyana, ya zama dole a tantance daidai gwargwadon yadda za a iya samun isasshen iska da ake kawowa ga injunan injina, gwargwadon yanayin aikinsa. Wannan tsari ana iya sarrafa shi ta hanyar dukkanin sigina na firikwensin: na'urar firikwensin iska, mai auna yanayin zafin jiki, amma wadanda suka fi shahara a cikinsu shi ne aunin firikwensin iska (MAF), wanda wani lokaci kuma ake kira mitar mita. Na'urar firikwensin iska ta rubuta adadin (adadin) iska da ke fitowa daga sararin samaniya a cikin kayan masarufin da yawa kuma ya watsa wannan bayanan zuwa sashin kula da lantarki don lissafin mai na mai.

Nau'ikan da fasalin mita masu gudu

Bayani game da taƙaitawar DMRV - firikwensin iska mai yawo a iska. Ana amfani da na'urar a cikin motoci masu injina da mai. Tana cikin tsarin cin abinci tsakanin matatar iska da bawul din maƙura kuma yana haɗuwa da injin ECU. A cikin rashi ko rashin aiki na mita mai gudana, ana yin lissafin adadin iska mai shigowa ta hanyar matattarar bawul. Wannan ba ya bayar da cikakken ma'auni, kuma a cikin mawuyacin yanayin aiki, yawan mai yana ƙaruwa, tunda yawan iska ya zama babban mahimmin lissafi don lissafin adadin mai da aka yi wa allura.

Ka'idar aiki na na'urar firikwensin iska ta dogara ne da auna yanayin zafin iska, kuma saboda haka ana kiran wannan nau'in mitar gudu da anemometer mai-zafi. Manyan nau'ikan na'urori masu auna iska guda biyu suna da tsari daban-daban:

• filament (waya);
• fim;
• Nau'in ma'auni tare da bawul na malam buɗe ido (a halin yanzu kusan ba a amfani da shi).

Tsara da kuma tsarin aiki na ma'aunin waya

Nitievoy DMRV yana da na'ura mai zuwa:

• gidaje;
• bututun awo;
• m abu - platinum waya;
• mai kula da yanayin zafi;
• wutar lantarki gidan wuta.

Filattin filament da thermistor duka gada ne mai tsayayya. Idan babu iska a ciki, filamentin filament ana zafafa shi akai-akai zuwa yanayin zafin da aka ƙayyade ta hanyar wucewar wutar lantarki ta cikin sa. Lokacin da aka buɗe bawul din iska kuma ya fara gudana, abu mai sanyaya abu yana sanyaya, wanda zai rage juriyarsa. Wannan yana haifar da halin “dumama” don ƙaruwa don daidaita gadar.

Mai canzawa yana canza canje-canje na yanzu a halin yanzu zuwa ƙarfin fitarwa, wanda aka watsa shi zuwa injin ECU. Latterarshen, dangane da dangantakar da ba ta layi ba, tana ƙididdige adadin mai da aka ba ɗakunan ƙonewa.

Wannan ƙirar tana da ragi guda ɗaya mai mahimmanci - kan lokaci, rashin aiki ke faruwa. Abubuwan da ake ji dasu sun daina aiki kuma daidaitorsa ya fadi. Hakanan zasu iya yin datti, amma don magance wannan matsalar, na'urori masu auna iska da ke cikin iska a cikin motoci na zamani suna da yanayin tsabtace kansu. Ya haɗa da dumama waya na ɗan gajeren lokaci zuwa 1000 ° C tare da injin ɗin, wanda ke haifar da ƙonewar gurɓatattun abubuwa.

Makirci da fasalolin fim din DFID

Ka'idar aikin firikwensin fim yana cikin hanyoyi da yawa kama da firintin filament. Koyaya, akwai bambance-bambance da yawa a cikin wannan ƙirar. Maimakon waya ta platinum, ana sanya lu'ulu'u na silinon a matsayin babban abin damuwa. Latterarshen yana da yaduwar platinum, wanda ya ƙunshi yatsun da yawa mafi kankanta (fina-finai). Kowane ɗayan yadudduka mahaɗan na daban ne:

• dumama;
• thermistors (akwai biyu daga cikinsu);
• firikwensin zafin jiki na iska.

An sanya spartered crystal a cikin gidan da aka haɗa da tashar samar da iska. Yana da keɓaɓɓen zane wanda zai baka damar auna zafin jiki na ba kawai mai shigowa ba, har ma da rayayyun gudana. Tunda iska tana tsotsewa ta hanyar iska, yawan gudu yana da kyau sosai, wanda ke hana gurɓatuwa daga haɗuwa akan abin ji.

Kamar dai a cikin na'urar firikwensin filament, abu mai auna yanayin zafi har zuwa yanayin zafin da aka riga aka ƙaddara. Lokacin da iska ta ratsa ta cikin thermistors, sai a sami bambancin zafin jiki, a kan wannan ne aka kirga yawan adadin kwararar da ke zuwa daga yanayin. A cikin irin waɗannan ƙirar, ana iya ba da sigina ga injin ECU duka a cikin sigar analog (ƙarfin fitarwa), kuma a cikin tsarin zamani mai sauƙi da sauƙi.

Sakamako da alamun aiki na na’urar firikwensin iska

Kamar kowane nau'in firikwensin injiniya, rashin aiki na firikwensin iska yana nufin ƙididdigar ba daidai ba na injin ECU kuma, sakamakon haka, aiki mara kyau na tsarin allura. Wannan na iya haifar da yawan amfani da mai ko, akasin haka, rashin wadataccen abinci, wanda ke rage ƙarfin injin.

Mafi yawan alamun bayyanar cututtukan firikwensin:

• Bayyanar alamar "Duba Injin" a kan dashboard din motar.
• Increaseara muhimmanci a cikin amfani da mai yayin aiki na yau da kullun.
• Rage tsananin saurin injina.
• Matsaloli tare da fara injin da abin da ya faru na tsautsayi lokacin da yake aiki (injin ya tsaya).
• Yin aiki kawai a takamaiman matakin sauri (ƙasa ko babba).

Idan ka sami alamun matsala tare da firikwensin MAF, gwada kashe shi. Inara ƙarfin injiniya zai zama tabbaci na rushewar DMRV. A wannan yanayin, zai buƙaci a wanke shi ko maye gurbinsa. A wannan yanayin, ya zama dole a zaɓi firikwensin da mai ƙirar mota ya ba da shawarar (ma’ana asalin).