Subaru Forester khob sensor

Pistons nyob rau hauv lub combustion engine txav los ntawm combustion ntawm cov roj sib tov nyob rau hauv lub sib tov, tus txheej txheem muaj ib tug detonation cim, yog li ntawd, txawm ib tug me ntsis txo nyob rau hauv nws lub zog, zaus, ib tug tseem ceeb nce nyob rau hauv lub hnav tsis kam ntawm lub cev muaj zog, lub zog. qhov system. Detonation detonation (DD) yog ib feem ntawm lub tsheb, hnav kev loj hlob ntawm Subaru thiab Soviet Forester.

Dab tsi yog lub khob sensor: ua haujlwm thiab ua haujlwm

Cov ntxaib pistons txav emissions los ntawm cov hluav taws xob flash, lub zog siab uas muaj ntau zaus hauv qhov chaw ua haujlwm. Qhov kev txwv ntawm lub zog ntau dhau, xws li lub zog ntawm lub voj voog detonation, thaum lawv dhau los ua kev puas tsuaj rau lub cev, nyias nyias. Nws txoj kev ua txhaum cai tsis tas txhais tau hais tias qhov kev puas tsuaj tshwm sim sai sai, tab sis qhov hnav ntawm lub cev muaj zog thiab kev tsim cov qauv nrog nws yuav ua kom nrawm.

Kev cais tawm ntawm cov cim tsis zoo ntawm qhov hluav taws kub ntawm qhov hluav taws xob hauv qhov sib xyaw nrog qhov sib txawv ntawm qhov kev hloov kho - ib chav tswj pom tseeb (ECU). Qhov teeb tsa yuav tsis raug ua yog tias lub kaw lus tsis "paub" txog kev tawg - nws yog los saib xyuas nws qhov tshwm sim uas lub khob khob (DD, khob sensor) ua haujlwm. Yog li, qhov tseeb ntawm nws txoj haujlwm yog nyob ntawm qhov tseeb ntawm qhov chaw nyob hauv tag nrho cov txheej txheem piav qhia, qhov zoo ntawm lub zog, cov peev txheej thiab nws cov nodes.

DD zoo li cas?

Lub Subaru Forester khob sensor, zoo li feem ntau cov qauv ntawm cov hom no, yog ib puag ncig torus. Nyob rau sab, nws yog txawm peem rau nrog ib tug davhlau ya nyob twg rau txuas mus rau lub hluav taws xob tswj chav tsev ntawm lub internal combustion engine. Hauv nruab nrab yog ib lub qhov rau mounting. Lub piezoelectric caij yog ntsia nyob rau hauv intrafunctional ntu ntawm lub sensor, uas reacts rau kev co los ntawm tsim ib tug me me voltage thiab ib tug muab zaus.

Lub khoos phis tawj tas li txheeb xyuas cov pulses los ntawm cov sensors - Yog tias muaj qhov sib txawv ntawm qhov ntsuas ib txwm muaj, kev ntsuam xyuas ntawm qhov tshwm sim ntawm detonation. Tsis tas li ntawd, cov tswj module, raws li qhov programmed program, xyuas kom muaj kev kho ntawm lub cav combustion, tshem tawm. suboptimal ignitions ntawm Fuel Mixture.

Lub khob sensor nyob qhov twg?

Qhov chaw rau DD yog txiav txim siab los ntawm cov neeg tsim qauv kom ua tiav qhov rhiab heev, uas ua rau kom qhov tseeb ntawm kev ntes detonation txawm nyob rau thawj theem ntawm kev tshuaj xyuas.

Qhov chaw ntawm lub khob khob yog nyob nruab nrab ntawm lub thawv cua lim thiab cov khoom noj khoom haus, nyob rau hauv lub throttle valve, qhov chaw uas yog nyob rau ntawm ntu nrog lub tog raj kheej.

Yuav ua li cas xyuas lub khob sensor

Kev puas tsuaj rau lub khob sensor Ua ntej ntawm tag nrho cov, kev ua yuam kev cav (cov lis dej num) yog tso tawm kom pom ntawm lub ecu los ntawm lub computer on-board. Kos Cav yog tso tawm rau ntawm lub vaj huam sib luag. Qhov kev kuaj mob tus kheej no yuav tsum muaj nyob rau hauv cov qauv niaj hnub Subaru thiab muaj peev xwm kho qhov rhiab heev ntawm lub sensor, nce qhov tso zis voltage, thiab qhib Circuit Court. Txhua hom malfunction nws muaj nws tus kheej code, lub decoding yog nyob rau hauv cov ntaub ntawv ntawm kev siv lub tshuab, cov ntaub ntawv muaj nyob rau hauv Internet.

Multimeter

Koj tuaj yeem txheeb xyuas qhov kev noj qab haus huv ntawm DD nrog lub multimeter lossis voltmeter. Kev txiav txim:

• Dismantling lub sensor: kho ntsia liaj qhov rooj yog unscrewed, lub rooj sib txoos snaps tawm yooj yim. Qhov chaw, qhov zoo li peb siv saum toj no, lub sensor tsis tuaj yeem pom.
• Tester probes txuas nrog cov zis. Multimeter hloov dua siab tshiab rau DC tam sim no ntsuas, ntau yam yog hais txog 200mV (los yog tsawg dua).
• Nrog rau kev siv zog tsim nyog, koj yuav tsum pib, koj tuaj yeem nias, siv dd ib feem nrog lub ntsia liaj qhov rooj, ib tug hlau pas nrig, lub hau ntswj. Thaum lub sijhawm siv, lub sijhawm yuav los thiab kev yug menyuam hauv tsev yuav tshwm sim txij lub Tsib Hlis 20 txog Lub Tsib Hlis 30.
• Saib cov khoom siv. Hauv qhov xwm txheej zoo, qhov cuam tshuam yog nrog lub zog hluav taws xob txhua lub sijhawm. Tsis muaj lus teb txhais tau tias ua tsis tiav.

Txoj kev pov thawj thib ob zoo ib yam li qhov tau piav qhia, Tsuas yog kuaj kev txhais lus hauv kev ntsuas kev tiv thaiv (kos rau ntawm tus xaiv txog li 1000 ohms lossis 1 kΩ). Nyob rau hauv lub xeev ib txwm yuav muaj txog 400-600. Thaum lub sijhawm khob, tus nqi ntawm cov qhab nia yuav loj hlob roughly (feem ntau 1-2 com) thiab rov qab mus rau qhov qub ua ke.

Cov lus pom zoo:

• nyob rau hauv txhua rooj plaub nws yog tsim nyog los saib tias qhov luaj li cas ntawm cov zaub rov qab. Yog tias qhov no tshwm sim nrog kev quav tshuaj, ces lub sensor feem ntau yuav tawg;
• koj yuav tsum tau xyuas kom meej tias cov kev sojntsuam yog kev ruaj ntseg - cov kev sib cuag ntawm lub sensor tej zaum yuav qias neeg, p;
• voltage hloov thoob plaws lub sensor tuaj yeem ua tau ntau millivolts, tsis yog txhua qhov kev sim tuaj yeem tso saib nws. Thiab thaum ntsuas kev tiv thaiv hauv Ohms, yog li ntawd, xws li daim tshev yog qhov tseem ceeb;
• ntawm lub sijhawm siv tau, yog tias koj ntsuas qhov voltage, lub multimeter yuav tsum muaj qhov xav tau zoo.

Tshawb xyuas lub Circuit Court rau lub computer thaiv

Lub ntsiab lus hauv qab no. Lub sensor tsis tshem tawm. Tshem lub ECU plug, ua ntej disconnect tus "-" ntawm lub roj teeb. Ntsuas qhov loj ntawm cov pulses siv. Qhov nyuaj yog tias koj yuav tsum paub lub pinout ntawm lub ntsaws, uas lub qhov (socket) ntawm lub ncoo tig tawm lub sensor. Kom paub txog kev sib yuav dlej manually lossis yooj yim dua - tau txais cov ntaub ntawv los ntawm

Cov lus piav qhia tuaj yeem siv los txheeb xyuas qhov muaj peev xwm ntawm cov hluav taws xob hluav taws xob mus rau chav tswj hwm, qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas. Kev txiav txim:

1. Tshem lub thaiv los ntawm lub cev muaj zog tswj chav tsev.
2. 2 cov neeg raug pom nyob rau ntawm qhov thaiv, qhov ntsuas ntsuas ntsuas tau txuas nrog lawv, yog tias lawv tsis qhib, koj tuaj yeem siv cov xov hlau rau lawv.
3. Lub tester selector txhais mus rau qhov ntsuas hluav taws xob ntawm 200 mV.
4. Lawv khob lub sensor los yog tsis mloog nws nyob rau hauv lub xub ntiag. Cov lej ntawm cov qhab nia yuav tsum hloov pauv hauv leaps thiab ciam teb.

Nws kuj tseem pom zoo kom kuaj xyuas cov ntaub thaiv npog los ntawm ECU mus rau DD: vim nws qhov kev puas tsuaj, kev sib haum xeeb yuav tshwm sim uas cuam tshuam rau kev ua haujlwm ntawm chav tsev thiab kev teeb tsa raug ntawm ECU kev txiav txim siab.

Xyuas yam tsis muaj dismantling

Nws muaj peev xwm txheeb xyuas Subaru khob sensor, thiab nws tsis pom ntawm lub tsheb:

1. Hloov lub cav mus ua haujlwm.
2. Coj mus rhaub rau ntu ua haujlwm ntawm lub sensor.
3. Yog hais tias lub crankshaft ceev yog lawm, qhov tseeb hais tias yog hais tias qhov no tsis tshwm sim, ces ib tug tawg tsis tas yuav tshwm sim.

Teeb meem hauv kev kuaj mob

Qhov tsis zoo ntawm txoj kev ywj pheej rau kev tshuaj xyuas DD yog tias txhua tus ntawm lawv tsis tso cai kom raug, tag nrho 100% txawm tias ze li sai tau los txiav txim siab lub xeev ntawm lub sensor. Yog vim li cas yog nyob rau hauv peculiarities ntawm kev ua hauj lwm: rau ib tug ib txwm ua hauj lwm ntaus ntawv, pulses ntawm zaus zaus, periodicity ntawm oscillations yuav tsum tau tsim, thiab qhov no nyob ntawm theem ntawm vibrations, uas tsis yog li yooj yim los tsim nyob rau hauv tag nrho cov zaus hloov.

Ntau ntawm cov saum toj no, tag nrho cov kev kuaj mob nrog improvised txhais tau tias yog tsis yooj yim sua - tsuas yog ib tug kos rau ntawm ib tug tshwj xeeb sawv ntsug los yog ib tug diagnostic ntaus ntawv muab ib tug tseeb tshwm sim.

Txhua txoj kev ywj pheej nrog cov cuab yeej improvised, multimeter, nyob ntawm qhov muaj peev xwm me ntsis ntawm lub sensor, tab sis qee qhov tseem ceeb, cov jumps lawv tus kheej tsis tshwm sim, tab sis lawv cov yam ntxwv ntxiv, uas tsuas yog txiav txim siab los ntawm tus kws ntsuas tshwj xeeb.

Kev Hloov

Kev npaj theem - cov cuab yeej: fastening nyob rau hauv tus txheej txheem ntawm unscrewing nrog qhib-kawg "10", lub qhov (socket) ciaj ntswj "12", ratchet nrog ib tug extension qaum, crank. Koj yuav xav tau ib tug flathead screwdriver. Rau tu - rags, rau rusty threads - penetrating lubricant.

Knock sensor hloov txheej txheem

Tshem tawm cov qub thiab txhim kho lub khob tshiab ntawm Subaru Forester suav nrog cov txheej txheem hauv qab no. Nws yog de-energized los ntawm lub network, los ntawm "-" davhlau ya nyob twg ntawm lub roj teeb. Lawv tshem tawm lub intercooler, uas 2 fasteners yog unscrewed, ib khub ntawm clamps yog loosened.

Disconnect lub "chip" (connector) ntawm lub khob sensor.

Lub fastening bolt yog unscrewed, DD yog rub tawm nrog nws.

Qhov kawg theem yog lub installation ntawm lub khob tshiab sensor. Kev sib dhos tau ua nyob rau hauv qhov kev txiav txim rov qab.