Yadda ake Gwada Sensor na MAP tare da Multimeter (Mataki ta Jagoran Mataki)

Na'urar firikwensin cikakken matsi (MAP) yana gano matsa lamba na iska a cikin nau'in abin sha kuma yana ba abin hawa damar canza yanayin iska/man fetur. Lokacin da firikwensin MAP ya yi muni, zai iya lalata aikin injin ko sa hasken injin duba ya kunna. Yana amfani da vacuum don sarrafa matsi da yawa. Mafi girman matsa lamba, ƙananan injin da ƙarfin fitarwa. Mafi girman injin da ƙananan matsa lamba, mafi girman fitarwar wutar lantarki. Don haka ta yaya kuke gwada firikwensin MAP tare da DMM?

Wannan jagorar mataki zuwa mataki zai koya muku yadda ake gwada firikwensin MAP tare da DMMs.

Menene firikwensin MAP ke yi?

Na'urar firikwensin MAP tana auna adadin matsin iska daidai gwargwado da injin da ke cikin ma'aunin abin sha, ko dai kai tsaye ko ta hanyar bututun iska. Sannan ana jujjuya matsa lamba zuwa siginar wutar lantarki, wanda firikwensin ya aika zuwa na'urar sarrafa wutar lantarki (PCM), kwamfutar motarka. (1)

Firikwensin yana buƙatar siginar tunani 5-volt daga kwamfutar don dawo da motsi. Canje-canje a cikin injin motsa jiki ko matsa lamba na iska a cikin nau'in abun sha yana canza juriyar lantarki na firikwensin. Wannan na iya ƙara ko rage ƙarfin siginar zuwa kwamfutar. PCM tana daidaita isar da mai da lokacin kunna wuta dangane da nauyi na yanzu da saurin injin ta amfani da bayanai daga firikwensin MAP da sauran firikwensin.

Yadda ake duba firikwensin taswira tare da multimeter

Na 1. Duban farko

Yi pre-check kafin gwada firikwensin MAP. Dangane da saitin ku, ana haɗa na'urar firikwensin zuwa nau'in ci ta hanyar bututun roba; in ba haka ba, yana haɗa kai tsaye zuwa mashigai.

Lokacin da matsaloli suka taso, mafi kusantar bututun injin yana da laifi. Na'urori masu auna firikwensin da hoses a cikin sashin injin suna fuskantar yanayin zafi mai zafi, yuwuwar gurɓataccen mai da mai, da rawar jiki wanda zai iya lalata aikinsu.

Duba tuwon tsotsa don:

• karkatarwa
• raunin dangantaka
• fasa
• kumburi
• taushi
• taurin

Sannan duba mahalli na firikwensin don lalacewa kuma tabbatar da mai haɗa wutar lantarki yana da ƙarfi kuma yana da tsabta kuma wayoyi suna cikin kyakkyawan tsari na aiki.

Wayar ƙasa, siginar sigina, da wayar wuta sune mafi mahimmancin wayoyi guda uku don firikwensin MAP na mota. Koyaya, wasu na'urori masu auna firikwensin MAP suna da layin sigina na huɗu don mai sarrafa zafin iska.

An bukaci duk wayoyi uku su yi aiki yadda ya kamata. Yana da matukar mahimmanci a duba kowace waya daban-daban idan firikwensin ya yi kuskure.

No. 2. Gwajin wutar lantarki

• Saita saitunan voltmeter akan multimeter.
• Kunna maɓallin kunnawa.
• Haɗa jagorar ja na multimeter zuwa jagorar ƙarfin firikwensin MAP (mai zafi).
• Haɗa baƙar gubar na multimeter zuwa mahaɗin ƙasan baturi.
• Wutar lantarki da aka nuna yakamata ya zama kusan 5 volts.

Na 3. Gwajin siginar waya

• Kunna maɓallin kunnawa.
• Saita saitunan voltmeter akan multimeter na dijital.
• Haɗa jan waya na multimeter zuwa wayar sigina.
• Haɗa baƙar gubar na multimeter zuwa ƙasa.
• Tun da babu iska, siginar waya za ta karanta game da 5 volts lokacin da wuta ke kunne kuma injin ya kashe.
• Idan siginar siginar tana da kyau, multimeter ya kamata ya nuna kimanin 1-2 volts lokacin da aka kunna injin. Darajar wayar siginar tana canzawa saboda iska ta fara motsawa a cikin nau'in abin sha.

No. 4. Gwajin waya ta ƙasa

• Ci gaba da kunna wuta.
• Sanya multimeter akan saitin masu gwada ci gaba.
• Haɗa jagorar DMM guda biyu.
• Saboda ci gaba, ya kamata ku ji ƙara lokacin da aka haɗa wayoyi biyu.
• Sannan haɗa jajayen gubar na multimeter zuwa wayar ƙasa na firikwensin MAP.
• Haɗa baƙar gubar na multimeter zuwa mahaɗin ƙasan baturi.
• Idan kun ji ƙara, da'irar ƙasa tana aiki da kyau.

Na'a. 5. Gwajin zafin iska na iska

• Saita multimeter zuwa yanayin voltmeter.
• Kunna maɓallin kunnawa.
• Haɗa jan waya na multimeter zuwa siginar waya na firikwensin zafin iska mai sha.
• Haɗa baƙar gubar na multimeter zuwa ƙasa.
• Ƙimar firikwensin IAT ya kamata ya zama kusan 1.6 volts a yanayin zafin iska na 36 digiri Celsius. (2)

Alamomin Na'urar hasashe ta MAP

Yadda za a gane idan kana da mummunan firikwensin MAP? Wadannan tambayoyi ne masu mahimmanci da ya kamata ku sani:

Tattalin arzikin mai bai kai matsayin ba

Idan ECM ta gano ƙaramin ko babu matakin iska, yana ɗaukan injin ɗin yana ƙarƙashin kaya, yana zubar da ƙarin mai, kuma yana haɓaka lokacin kunnawa. Wannan yana haifar da babban nisan iskar gas, ƙarancin ƙarancin mai da kuma, a cikin matsanancin yanayi, fashewa (mafi wuya).

Rashin isasshen iko 

Lokacin da ECM ya gano babban injin, yana ɗaukan nauyin injin yayi ƙasa, yana rage allurar mai, kuma yana jinkirta lokacin kunna wuta. Bugu da ƙari, za a rage yawan amfani da man fetur, wanda, a fili, abu ne mai kyau. Duk da haka, idan ba a kona isassun mai ba, injin na iya rasa hanzari da ƙarfin tuƙi.

Yana da wuya a fara

Don haka, cakuduwar da ba ta dace ba ko kuma ƙwanƙwasa tana sa ya yi wahala fara injin. Kuna da matsala tare da firikwensin MAP idan za ku iya fara injin kawai lokacin da ƙafarku ke kan fedar ƙararrawa.

Gwajin fitar da hayaki ya gaza

Mummunan firikwensin MAP na iya ƙara hayaki saboda allurar mai ba ta dace da nauyin injin ba. Yawan amfani da man fetur yana haifar da karuwar hayakin hydrocarbon (HC) da carbon monoxide (CO), yayin da rashin isasshen man fetur yana haifar da haɓakar iskar nitrogen oxide (NOx).

Dubi wasu labaran mu a kasa.

• Yadda ake Amfani da Multimeter Digital Cen-Tech don Duba Wutar Lantarki
• Yadda ake gwada firikwensin camshaft na waya 3 tare da multimeter
• Yadda ake duba sashin sarrafa kunna wuta tare da multimeter

shawarwari

(1) PCM - https://auto.howstuffworks.com/engine-control-module.htm

(2) zazzabi - https://www.britannica.com/science/temperature