Ƙa'ida da gwajin firikwensin motsin iska na injin mota

Firikwensin kwararar iska (MAF), wanda kuma aka sani da mita kwararar iska, yana ɗaya daga cikin mahimman firikwensin injin EFI.Yana jujjuya kwararar iskar da aka shaka zuwa siginar lantarki kuma ta aika zuwa naúrar sarrafa lantarki (ECU).A matsayin daya daga cikin mahimman sigina don tantance allurar mai, firikwensin firikwensin ne wanda ke auna iskar da ke cikin injin.YASEN shine jagoran masana'anta na MAF firikwensin china.

Ana shigar da firikwensin motsin iska (MAF) tsakanin matatar iska da nau'in abin sha don auna ingancin iskar da ke shiga injin.ECM yana ƙididdige faɗin bugun bugun bugun allurar mai da ainihin kusurwar gaba ta kunnawa bisa siginar MAF.

Hot-waya mass iska kwarara (MAF)

The hot waya mass air flow (MAF) firikwensin kewaye yana kunshe da firikwensin, tsarin sarrafawa da waya mai haɗa sauran sassa biyu.Na'urar firikwensin yana fitar da siginar bankin wutar lantarki na DC zuwa na'urar sarrafa wutar lantarki (ECM), girman girmansa ya yi daidai da ƙarar iskar injin.

Asalin tsarin firikwensin zafin waya mai zafi ya ƙunshi wayar zafi mai zafi ta platinum (wayar dumama wutar lantarki) wacce ke jin motsin iska, madaidaicin ramuwa na zafin jiki (waya mai sanyi) wanda aka gyara bisa ga yanayin zafin iska, na'urar caji mara igiyar waya. wanda ke sarrafa halin yanzu na waya mai zafi kuma yana haifar da siginar fitarwa, da harsashi na firikwensin iska da sauran abubuwan.

Bayan kunna na'urar firikwensin motsi mai kunna wuta, wayar zafi ta platinum tana samun kuzari kuma tana haifar da zafi.Lokacin da iska ke gudana ta wannan waya, sanyayawar waya mai zafi yayi daidai da adadin iskar da ake sha.ECM yana kiyaye yanayin zafin waya mai zafi ta hanyar sarrafa halin yanzu da ke gudana ta cikin wayar zafi, ta yadda na yanzu ya yi daidai da adadin iskar da ake sha, yayin da ECM na iya auna yawan iskar da ake samu ta hanyar gano ƙarfin halin yanzu.

Halayen firikwensin firikwensin iska sune ƙananan girman, nauyi mai haske, fahimta da bayyananniyar karatun nuni, babban abin dogaro, ba ya shafar wutar lantarki ta waje, da kuma walƙiya.

Laifi sabon abu da ganewar asali na kwarara iska

Laifi na firikwensin iska (MAF) sun kasu kashi biyu.Ɗayan shi ne cewa siginar ya wuce ƙayyadaddun kewayon, wanda ke nuna cewa firikwensin motsin iska ya gaza.Motocin lantarki na zamani suna da aikin kariyar gazawa.Lokacin da siginar firikwensin ya gaza, na'urar sarrafa lantarki (ECU) za ta maye gurbinsa da ƙayyadaddun ƙima, ko maye gurbin siginar firikwensin da ba daidai ba tare da siginar wasu firikwensin.Bayan MAF firikwensin ya kasa, ECU ya maye gurbinsa da siginar firikwensin matsayi.Wata matsala ita ce siginar da ba ta dace ba (watau drift na aiki).Siginar firikwensin kwararar iska mara inganci na iya zama mafi cutarwa kamar salmosan azamethiphos fiye da sigina.Tun da siginar ba ta wuce kewayon da aka kayyade ba, na'ura mai sarrafa lantarki (ECU) za ta sarrafa adadin allurar mai bisa ga wannan siginar kwararar iska mara inganci, don haka, cakuda zai zama sirara ko wadata.Idan babu siginar kwararar iska, ECU za ta yi amfani da siginar firikwensin matsayi a maimakon haka, kuma saurin injin ɗin yana da ɗan kwanciyar hankali.

Lokacin da firikwensin firikwensin iska ya gaza, babban abubuwan da ke haifar da gazawa suna da wahala a farawa, rashin aiki mara kyau, saurin hanzari, rashin amfani da mai da aikin shaye-shaye (EGR), da sauransu. Misali, na'urar firikwensin MAF na abin hawa ba a shigar da shi daidai ba, azaman Sakamakon, firikwensin ya zama sako-sako bayan abin hawa ya fara.Ta wannan hanyar, ƙimar siginar wutar lantarki da aka gano ta firikwensin MAF yana da saurin canzawa portafilter (canji mai girma da ƙananan).ECM tana sarrafa faɗin bugun bugun allurar mai dangane da wannan siginar, wanda ke haifar da rashin kwanciyar hankali na injin.

Babban dalilan gazawar MAF:

• Lalacewar ciki ga firikwensin;
• Hanyar shigarwa mara kyau na firikwensin (a baya)
• Buɗe/gajeren kewaye na tashar firikwensin ko layi

Jiyya na hasarar hasarar zafi mai zafi na iska (MAF).

Lokacin da ƙarfin wutar lantarki ya yi yawa ko kuma akwai babban ƙarfin lantarki nan take, firikwensin iska mai zafi na fim yana da sauƙin ƙonewa.Dalilin da ya sa ƙarfin wutar lantarki mafi girma na kewaye ya yi yawa (fiye da 16V) shine sau da yawa cewa baturin yana vulcanized da gaske, wanda ke rage ƙarfinsa kuma ba zai iya ɗaukar matsakaicin ƙarfin lantarki na janareta ba.Saboda haka, ɓarnawar baturi yana ɗaya daga cikin dalilan da ke haifar da lalacewar firikwensin iska mai zafi.Maganin shine shigar da "7812" uku tasha ƙarfin lantarki daidaitawa hadedde kewaye a gaban karshen fim zafi iska kwarara firikwensin.

Kammalawa

MAF firikwensin wani muhimmin sassa ne na mota, ya zama dole mutane su sami ɗan taƙaitaccen fahimtar yadda ake tantancewa da gyara lalacewarsa.A gaskiya akwai masu samar da firikwensin jimla na China da yawa, don ƙarin bayani, pls tuntuɓi YASEN.