Knock is Lub khob sensor nyob qhov twg?

2024 Tus sau: Erin Ralphs | [email protected]. Kawg hloov kho: 2024-02-19 16:11

Knocking yog ib qho tshwm sim uas cov huab cua sib xyaw ua ke ignites spontaneously. Nyob rau tib lub sijhawm, lub crankshaft ntawm lub cav txuas ntxiv tig, muaj kev thauj khoom loj heev. Yuav kom tshem tau ntawm nws, nws yog ib qho tsim nyog yuav tsum tau kho lub sijhawm ntawm kev txhaj tshuaj roj, ignition. Hauv cov tsheb txhaj tshuaj niaj hnub no, cov tshuab hluav taws xob tswj hluav taws xob raws li microcontrollers tau siv. Lawv tso cai rau koj coj ntau tus yam ntxwv thiab tswj kev ua haujlwm ntawm txhua yam khoom thiab cov khoom sib dhos.

Detonation sensor ntaus ntawv

Txhua lub khob ntsuas (VAZ, GAZ, tsheb txawv teb chaws) siv lub piezoelectric. Cov kab hauv qab yog tias thaum raug rau lub caij no, lub teeb liab tsim tawm. Thiab qhov ntau dua qhov load, qhov muaj zog ntawm cov teeb liab theem. Detonation yeej yog ib khob khob. Yog li ntawd, yog tias koj ntaus ib yam dab tsi ntawm lub cev sensor, nws yuav tsim ib lub teeb liab ntawm ib qho loj npaum li cas. Cov nram qab no hom sensors yog siv nyob rau hauv niaj hnub combustion engines:

1. Broadband (nrog ob tus neeg sib cuag).
2. Resonant (nrog ib qho kev sib cuag).

Nws yog cov yam ntxwv uas paub qhov txawv ntawm ob hom khoom siv.

Yuav ua li cas lub sensor ua haujlwm

Lub VAZ khob sensor, tsis hais nws hom, nyob nruab nrab ntawm lub tog raj kheej thib ob thiab thib peb ntawm lub cav - qhov no yog qhov nruab nrab ntawm qhov thaiv. Yog li ntawd, cov cuab yeej sib npaug pom qhov tawg hauv thawj thiab plaub lub tog raj kheej (qhov kev ncua deb ntawm lawv mus rau lub sensor yog tib yam). Detonation yog qhov tshwm sim uas tuaj yeem ua rau pistons, nplhaib, ntiv tes, li qub. Thiab nrog rau lub sijhawm ntev, lub cav yuav ua tsis tiav.

Thaum lub sensor pom qhov khob, nws xa cov teeb liab sib raug mus rau chav tswj hluav taws xob. Lub tom kawg tsom xam cov teeb liab theem thiab kho lub sij hawm ignition, roj txhaj lub sij hawm, thiab lwm yam. Cov yam ntxwv no kuj nyob ntawm qhov zoo ntawm cov roj sib tov (qhov no parameter yog tswj los ntawm ib tug oxygen sensor).

Ntau yam ntawm sensors

Hauv thawj xyoo ntawm kev tsim khoom, tshwj xeeb tshaj yog cov resonant tau teeb tsa ntawm Lada txhaj tshuaj tsheb. Lub peculiarity ntawm ib leeg-hu sensors yog tias lawv muaj peev xwm ntes tau tsuas yog lub khob ntawm detonation zaus. Tab sis broadband pab kiag li lawm perceive tag nrho cov suab nrov band, tom qab uas nws emits detonation sawv daws yuav. Ob hom khoom siv ua haujlwm sib txawv, tsuas yog hloov ib qho nrog lwm tus yuav tsis ua haujlwm. Txawm hais tias koj hloov cov xaim (vim cov naj npawb ntawm cov pins txawv), qhov no yuav tsis daws qhov teeb meem. Thiab yog tias koj txiav txim siab los teeb tsa lub wideband sensor, koj yuav tau hloov lub tshuab hluav taws xob tswj tsev tsim los ua haujlwm nrog nws.

nqi khoom

Ntawm kev muag khoom koj tuaj yeem pom ntau yam khoom los ntawm cov tuam txhab sib txawv. Thiab yog tias muajLub khob sensor yog faulty thiab yuav tsum tau hloov. Tus nqi ntawm qee qhov yog siab heev, tab sis cov khoom siv pheej yig kuj tuaj yeem siv rau cov tsheb hauv tsev. Resonant khob sensors tsim los ntawm General Motors yuav raug nqi txog 2500-2700 rubles.

Tsis pheej yig, tab sis cov khoom siv dav dav ntawm cov chaw tsim khoom hauv tsev AvtoPribor raug nqi 250-350 rubles, thiab StartVolt yog ib nrab ntawm tus nqi - txog 200 rubles. Tus nqi ntawm cov khoom siv hluav taws xob hauv kev lag luam theem nrab yog 2000-3000 rubles. Yog li ntawd, nws yuav yooj yim dua rau remake tag nrho cov kab ke siv pheej yig broadband sensors dua li nruab ib tus neeg sib cuag.

Cov tsos mob tseem ceeb ntawm lub khob khob tawg

Yog tias peb tham txog kev tsim tsheb VAZ hauv tsev, ces khob qhov muag tsis pom kev tshwm sim raws li hauv qab no:

1. Lub teeb ntawm lub dashboard teeb, qhia pom tias muaj kev puas tsuaj hauv lub cav.
2. Qhov pom kev tsis zoo hauv lub tsheb tsis zoo, muaj lub zog tsis muaj zog.
3. Yog tias koj nias lub roj pedal kom nrawm, lub khob yuav tshwm sim, taw qhia kev tawg.
4. Ntau hauv lub cav ua haujlwm kub. Lub piezo lub caij tsis ua haujlwm, vim tias lub tshuab hluav taws xob tswj hluav taws xob teeb tsa lub sijhawm hluav taws xob tsis raug.

feem ntau ua rau detonation yog cov roj av tsis zoo thiab lub cav kub dhau. Tab sis tib lub sijhawm, lub sensor yuav tsum ua haujlwm thiab muabCov teeb liab sib raug rau ECU, uas yuav kho lub kaum sab xis thiab tso cai rau koj tshem tawm lub khob.

Engine error codes

Yog tias muaj cov tsos mob ntawm DD tsis ua hauj lwm thiab lub Cheeb Tsam Lub Cav pib hlawv, xyuas lub cav nrog lub tshuab luam ntawv. Cov cim qhia ntawm detonation feem ntau tshwm sim nrog cov teeb meem hauv qab no:

1. P0326 - siab teeb liab los ntawm lub sensor.
2. P0327 - sensor teeb liab qis dhau lawm.
3. P0325 - tawg thaiv rau khob qhov muag.

Thov nco ntsoov tias qhov yuam kev 0327 tuaj yeem teeb liab tsis tau tsuas yog lub khob tsis ua haujlwm xwb, tab sis kuj muaj kev sib cuag tsis zoo hauv nws qhov kev sib txuas. Xyuas tag nrho cov kev sib txuas, ntxuav yog tias tsim nyog thiab kho nrog cov roj nkag. Oxidized contacts yog ib qho ua rau muaj qhov yuam kev. Cov laj thawj tseem ceeb vim li cas tus lej 0327 tshwm:

1. Instrument malfunction.
2. Tsis muaj lub zog lossis tswj lub teeb liab rau lub khob qhov rooj sib txuas thaiv.
3. Muaj xeb nyob rau hauv qhov chaw uas lub cev ntawm qhov ntsuas tau txuas nrog lub cav thaiv.

Yog rooj plaub yog xeb lossis oxidized, nws tuaj yeem ntxuav nrog ntawv xuab zeb. Tab sis yog tias muaj cov pa phem ntau, nws yooj yim dua los hloov cov cuab yeej - tus nqi ntawm cov cuab yeej siv dav hlau me me.

Diagnosis

Thaum lub sijhawm uas lub khob ntsuas qhov ntsuas nyob, theem ntawm khob ntawm tib qhov loj yuav ua rau muaj kev sib npaug ntawm lub cav thaiv. Yog li ntawd, DD yuav tsim ib lub teeb liab ntawm tib theem. Mus xyuasKev ua haujlwm ntawm lub cuab yeej, nws yog qhov tsim nyog:

1. Teem lub multimeter rau qhov ntsuas qhov ntsuas hluav taws xob (0.2 V).
2. Txuas kev sib cuag ntawm lub cuab yeej nrog kev sojntsuam ntawm multimeter.
3. Maj mam siv ob peb lub tshuab rau lub cev ntawm lub sensor - txoj kev no koj tuaj yeem simulate detonation khob.
4. Saib ntawm kev nyeem ntawv multimeter - lawv yuav tsum hloov.

Detonation yog khob, thiab luv luv ntawm qhov ntawd. Yog li, nws raug nquahu kom siv tsis yog digital multimeter rau kev kuaj mob, tab sis tus taw qhia - nws yuav qhia txog kev ua haujlwm ntawm lub cuab yeej kom meej meej. Txhawm rau hloov lub sensor, koj yuav tsum tau txiav lub qub qub los ntawm qhov thaiv, unscrew lub fastening txiv ntseej thiab tshem tawm cov qub. Ib qho tshiab yog ntsia rau hauv nws qhov chaw thiab cov txiv ntoo yog nruj. Muaj kev sib txuas ntawm cov thaiv ntawm cov xov hlau, nws yuav tsum tau kuaj xyuas qhov ua haujlwm ntawm qhov system.