Chii chinoshanda semuchina wekuisa pressure mumota?
Basa guru re automotive intake pressure sensor (MAP sensor) nderekutarisa kumanikidzwa kwakakwana mu engine intake manifold uye kushandura pressure signal kuita electrical signal kuti itumirwe ku engine ECU (Electronic Control Unit), iyo inoshanda senzira huru yeECU kuverenga huwandu hwemafuta anoshandiswa uye ignition advance Angle.
Pfungwa dzaro dzekushanda uye kuwedzera kwebasa zvinogona kukamurwa kuita zvinhu zviviri zvinotevera:
Kumanikidzwa kweinjini kunopinda nemafuta akawanda kunochinja nekumhanya kwakasiyana uye mutoro kana mafuta akaenzana nemamiriro akasiyana ekushanda. Semuenzaniso, kana throttle opening yakakura (pasi pemutoro wakawanda), intake manifold pressure yakakwira, uye ECU inowedzera huwandu hwemafuta anopinda nemafuta zvichienderana nechiratidzo che sensor. Kana throttle opening iri diki (pasi pemutoro wakaderera), pressure yakaderera, uye ECU inoderedza huwandu hwemafuta anopinda nemafuta kuitira kuti ive nechokwadi chekuti air-fuel ratio yeinjini inoramba iri mukati memhando yepamusoro pasi pemamiriro akasiyana ekushanda uye inovandudza kushanda zvakanaka kwemoto.
Muinjini ine turbocharging, sensor yekumanikidza intake inogonawo kubatsira mukutarisa kana kumanikidzwa kwekukwidza kuri kwakajairika, kudzivirira kukwidza kwakanyanya kubva pakukanganisa injini. Mamwe mamodheru anosanganisawo masaini ayo kuti awedzere kudzora kweidling uye kushanda zvakanaka kwekuchenesa utsi.
Zvikanganiso zvakajairika zvemasensa ekumanikidza emota (MAP sensors) pamwe nezviratidzo zvemota zvinoenderana nazvo zvinonyanya kuwira muzvikamu zvinotevera:
Chikanganiso chedunhu reSensor
Izvi zvinosanganisira mamiriro ezvinhu akadai sema "short circuits", "open circuits", "oxidized plugs", uye "kusabatana zvakanaka".
Zviratidzo zvinoenderana: Kumhanya kweinjini kusina kugadzikana, kumhanya kushoma, uye kana zvanyanya kuoma, kumira kunogona kuitika. ECU inogona kunyora kodhi yekutadza uye kuvheneka chiratidzo chekutadza kweinjini.
Zvikamu zvemukati zve sensor zvakakuvara
Dambudziko guru riri mukukundikana kwezvinhu zvakaita sechip inoona kumanikidzwa uye circuit yekuwedzera masaini yesensor, izvo zvinoita kuti zvisakwanise kupindura nemazvo chiratidzo chekumanikidzwa kweintake manifold.
Zviratidzo zvinoenderana: Kusaverenga zvakanaka huwandu hwemafuta anopinzwa, zvichikonzera musanganiswa wakakora kana kuti usina mafuta akawanda. Kana musanganiswa wacho wakanyanya kuwanda, utsi hutema hunobuda mupombi yekubuda mweya uye kushandiswa kwemafuta kunowedzera. Kana musanganiswa wacho wakanyanya kuwanda, simba reinjini rinoderera uye zvinodzokera shure.
Mhepo inopinzwa mu sensor yakavharwa kana kuti iri kubuda
Sensor yakabatana ne intake manifold kuburikidza ne vacuum tube. Kana vacuum tube yakavharwa, yakakombama kana kuti ichidonhedza mvura, ichaita kuti pressure signal inounganidzwa nesensor ive yakakanganisika.
Zviratidzo zvinoenderana nazvo: kudedera kusingashande, kunonoka kwekumhanyisa. Mamwe mamodheru anogona kusangana nekumhanya kusingashande kwakanyanya kana kuderera zvakanyanya.
Kufamba kwechiratidzo cheSensor
Iyi idambudziko rakavanda. Sensor haina kukundikana zvachose, asi kukosha kwechiratidzo chekubuda kunosiyana kubva pane zvakajairika.
Zviratidzo zvinoenderana nazvo: Mota haina zviratidzo zvakajeka zvekusashanda zvakanaka, asi matambudziko akadai sekuwedzera kwekushandiswa kwemafuta zvisina kujairika uye kuderera kwesimba remagetsi anogona kuitika. Matambudziko aya anogona kuonekwa chete nekushandisa chishandiso chekuongorora kuti uverenge ruzivo rwuripo.
Kuti uone kana chiratidzo che sensor yekupisa intake yemota (MAP sensor) chakajairika, pane nzira mbiri huru: kuverenga data stream nechishandiso chekuongorora uye kuyera voltage/resistance ne multimeter. Mashandiro chaiwo ndeekuti:
I. Kuverenga ruzivo uchishandisa chishandiso chekuongorora (chinonyanya kushandiswa uye chakarurama)
Batanidza chishandiso chekuongorora mota kune OBD interface yemotokari, pinda musystem yekudzora injini, sarudza basa rekuti "Read Data Stream", uye tsvaga chinhu che "Intake Manifold Absolute Pressure".
Enzanisa hunhu hwekumanikidzwa mumamiriro akasiyana ekushanda kuti uone kana huri mukati mehuwandu hwakajairika (hunhu hunogona kusiyana zvishoma pakati pemhando dzakasiyana dzemotokari, ndapota tarisa bhuku rekugadzirisa)
Mamiriro ekushanda: Kumanikidzwa kwakajairika kunowanzova pakati pe20 ne40kPa.
Kana throttle yakavhurika zvizere (kukurumidzisa kamwe kamwe), kukosha kwekumanikidzwa kuchakwira nekukurumidza kusvika 80 kusvika 100kPa (pedyo nekumanikidzwa kwekunze kwemhepo).
Bvisa chubhu ye vacuum ye sensor: Kuwanda kwekumanikidzwa kuchakwira ipapo ipapo, kuswedera pedyo nekumanikidzwa kwekunze kwemhepo, zvichiratidza kuti sensor nepaipi zviri kufamba zvakanaka.
Kana kukosha kwedata stream kuchiramba kwakasimba nguva dzese, kuchisiyana zvakanyanya kubva pane standard range, kana kusaratidza mhinduro kune shanduko mumamiriro ekushanda, zvinoratidza kuti sensor signal haina kujairika.
2. Yera voltage uchishandisa multimeter (yakakodzera kugadzirisa matambudziko nemaoko)
Tsvaga chivhariso cheMAP sensor. Kazhinji, sensor ine waya nhatu: tambo yemagetsi (5V), waya yepasi, uye waya yechiratidzo.
Tendeudza switch yekupisa panzvimbo yekuti "ON" (usatange injini), uye pima ne DC voltage range ye multimeter:
Voltage iri pakati petambo yemagetsi newaya yepasi inofanira kunge iri pa5V (kana voltage iri 0 kana yakaderera zvakanyanya, zvinoratidza kuti pane dambudziko remagetsi mutambo kana ECU).
Voltage iri pakati pemutsetse wechiratidzo nemutsetse wepasi inowanzova 0.5 kusvika 1.5 volts pakumhanya kusina kusimba. Kana throttle yavhurwa zvizere, voltage inokwira kusvika 3.5 kusvika 4.5 volts.
Mushure mekuvhura injini, tinya zvishoma nezvishoma pedal yeaccelerator uye tarisa kana voltage yemutsara wechiratidzo ichikwira zvishoma nezvishoma sezvo throttle opening ichiwedzera. Kana voltage ikaramba isina kuchinja, ichisvetuka kana kupfuura daro, zvinoratidza kuti chiratidzo che sensor hachina kujairika.
III. Nzira dzeKutonga Dzinobatsira
Tarisa chiitiko chekukanganisa: Kana mota ikaratidza kumhanya kusina kugadzikana, kumhanya kushoma, kushandisa mafuta zvakanyanya, uye rambi rekukanganisa rakabatidzwa, uye kodhi yekukanganisa inoverengwa se "P0106/P0107/P0108" (kodhi yekukanganisa ine chekuita ne sensor yekumanikidza intake), zvingangoita kuti chiratidzo che sensor chisashande zvakanaka.
Tarisa chubhu ye vacuum: Bvisa chubhu ye vacuum yakabatana ne sensor kuti uone kana paine kuvharika, kutsemuka kana kupatsanuka. Kana chubhu ye vacuum ichidonha, zvichaita kuti chiratidzo chekumanikidzwa chakaunganidzwa ne sensor chikanganiswe uye chitongwe zvisirizvo sechiratidzo chisina kujairika.
Kana uchida kuziva zvakawanda, ramba uchiverenga zvimwe zvinyorwa pane ino saiti!
Ndapota tifonerei kana muchida zvigadzirwa zvakadaro.
Zhuo Meng Shanghai Auto Co., Ltd. yakazvipira kutengesa MG&MAXUSzvikamu zvemota zvinogamuchirwa Kutenga.
