Maitiro ekuyedza iyo MAP Sensor ine Multimeter (Nhanho neNhanho Gwaro)

Iyo yekutora manifold absolute pressure (MAP) sensor inoona mhepo yemhepo muhuwandu hwekutora uye inobvumira motokari kushandura chiyero chemhepo / mafuta. Kana iyo MAP sensor yakashata, inogona kukanganisa mashandiro einjini kana kuita kuti cheki injini mwenje iuye. Inoshandisa vacuum kudzora kupinza manifold pressure. Iyo yakakwirira yekumanikidza, iyo inodzika iyo vacuum uye inobuda voltage. Iyo yakakwirira iyo vacuum uye yakadzika kudzvinyirira, iyo yakakwirira yemagetsi kubuda. Saka unoyedza sei iyo MAP sensor neDMM?

Iyi nhanho nhanho gwara inokudzidzisa maitiro ekuyedza MAP sensors neDMM.

Chii chinoita MAP sensor?

Iyo MAP sensor inoyera huwandu hwekumanikidzwa kwemhepo maererano neiyo vacuum mune yekudyara manifold, ingave yakananga kana kuburikidza nevhavha hose. Kudzvanywa kunozoshandurwa kuita chiratidzo chevoltage, iyo sensor inotumira kune simba rekudzora module (PCM), komputa yemota yako. (1)

Iyo sensor inoda 5-volt referensi chiratidzo kubva pakombuta kuti idzoke kufamba. Shanduko muvacuum kana kudzvinyirirwa kwemhepo mune yakawanda manifold inoshandura kupikisa kwemagetsi kwe sensor. Izvi zvinogona kuwedzera kana kuderedza simba rechiratidzo kukombiyuta. Iyo PCM inogadzirisa cylinder mafuta ekuunza uye nguva yekubatidza zvichienderana neazvino mutoro uye injini kumhanya uchishandisa ruzivo kubva kuMAP sensor uye mamwe masensor.

Maitiro ekutarisa iyo mepu sensor ine multimeter

Nhamba 1. Preliminary check

Ita pre-cheki usati waedza iyo MAP sensor. Zvichienderana nekugadzika kwako, iyo sensor inobatanidzwa kune yakawanda yekudyara kuburikidza nerubha hose; kana zvisina kudaro, inobatanidza zvakananga kune inopinza.

Apo matambudziko anomuka, hose yevacuum ndiyo inonyanya kukonzera. Sensors uye hoses mukamuri yeinjini zvinoratidzwa kune tembiricha yakakwira, inogona kusvibiswa nemafuta uye peturu, uye vibration inogona kukanganisa kuita kwavo.

Ongorora pombi yekusveta ye:

• twist
• zvisungo zvisina simba
• mitswe
• bundu
• kupfava
• kuomesa

Wobva waongorora iyo sensor imba yekukuvara uye ita shuwa kuti chinongedzo chemagetsi chakasimba uye chakachena uye wiring iri muhurongwa hwekushanda hwakakwana.

Waya yepasi, waya yechiratidzo, uye waya yemagetsi ndiwo matatu akakosha waya emotokari MAP sensor. Nekudaro, mamwe maMP sensors ane mutsara wechina wechiratidzo chekutora tembiricha yemhepo.

Zvaidiwa kuti waya dzose dziri nhatu dzishande zvakanaka. Izvo zvakanyanya kukosha kutarisa waya yega yega kana sensor yakanganisa.

Nhamba 2. Simba wire test

• Isa iyo voltmeter marongero pane multimeter.
• Batidza kiyi yekubatidza.
• Batanidza iyo tsvuku inotungamira yemultimeter kune MAP sensor simba lead (inopisa).
• Batanidza iyo dema inotungamira yemultimeter kune bhatiri pasi yekubatanidza.
• Iyo inoratidzwa voltage inofanira kunge inosvika 5 volts.

Nhamba 3. Signal wire test

• Batidza kiyi yekubatidza.
• Isa iyo voltmeter marongero pane dijitari multimeter.
• Batanidza tambo tsvuku yemultimeter kune tambo yechiratidzo.
• Batanidza iyo dema inotungamira yemultimeter kusvika pasi.
• Sezvo pasina kumanikidzwa kwemhepo, waya yechiratidzo ichaverenga nezve 5 volts kana kupisa kuripo uye injini yakadzimwa.
• Kana iyo chiratidzo wire yakanaka, iyo multimeter inofanira kuratidza nezve 1-2 volts kana injini yakavhurwa. Kukosha kwewaya yechiratidzo kunoshanduka nekuti mweya unotanga kufamba mune yakawanda yekudyara.

Nhamba 4. Ground wire test

• Ramba uchibatidza.
• Isa multimeter pane seti yekuenderera mberi vanoedza.
• Batanidza maviri maDMM anotungamira.
• Nekuda kwekuenderera mberi, iwe unofanirwa kunzwa beep kana waya dzese dzakabatana.
• Wobva wabatanidza iyo tsvuku inotungamira yemultimeter kune yepasi waya yeMAP sensor.
• Batanidza iyo dema inotungamira yemultimeter kune bhatiri pasi yekubatanidza.
• Kana iwe ukanzwa beep, dunhu repasi riri kushanda nemazvo.

No. 5. Kupinza tembiricha yemhepo wire test

• Isa iyo multimeter kune voltmeter mode.
• Batidza kiyi yekubatidza.
• Batanidza waya dzvuku yemultimeter kune iyo chiratidzo wire yeinopinza tembiricha yemhepo sensor.
• Batanidza iyo dema inotungamira yemultimeter kusvika pasi.
• Iyo IAT sensor kukosha inofanira kunge iri 1.6 volts pamhepo tembiricha ye36 degrees Celsius. (2)

Zviratidzo zveYakundikana MAP Sensor

Nzira yekuziva sei kana iwe uine yakaipa MAP sensor? Iyi inotevera mibvunzo yakakosha kuziva:

Fuel economy not up to standard

Kana iyo ECM ikaona yakaderera kana isina mhepo, inofunga kuti injini iri pasi pemutoro, inorasa mamwe peturu, uye inosimudzira nguva yekudzima. Izvi zvinoguma nepamusoro gasi mileage, kuderera kwemafuta ekufambisa uye, mumamiriro ezvinhu akaipisisa, kuputika (kusingawanzoitiki).

Simba risina kukwana 

Kana iyo ECM yaona vacuum yakakwira, inofunga kuti injini yakadzikira, inoderedza jekiseni remafuta, uye inodzoreredza nguva yekudzima. Mukuwedzera, kushandiswa kwemafuta kuchaderedzwa, izvo, sezviri pachena, chinhu chakanaka. Zvisinei, kana peturu isina kukwana inopiswa, injini inogona kushaya kukurumidza uye simba rekutyaira.

Zvakaoma kutanga

Naizvozvo, musanganiswa wakapfuma zvisina mwero kana wakaonda unoita kuti zviome kutanga injini. Iwe une dambudziko neiyo MAP sensor kana iwe uchingokwanisa kutanga injini kana tsoka yako iri pane accelerator pedal.

Emission test yakundikana

Iyo yakaipa MAP sensor inogona kuwedzera kuburitswa nekuti jekiseni remafuta harina kuenzana nekuremerwa kweinjini. Kunyanya kushandiswa kwemafuta kunokonzera kuwedzera kwe hydrocarbon (HC) uye carbon monoxide (CO) emissions, nepo kusakwana kwemafuta kunokonzera kuwedzera kwe nitrogen oxide (NOx) kubuda.

Tarisa zvimwe zvezvinyorwa zvedu pazasi.

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kurumbidza

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

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