TshebTsheb

ECU: dab tsi yog nws thiab nyob qhov twg?

Nyob rau hauv no tsab xov xwm koj yuav kawm txog cov ntaus ntawv xws li ib tug computer. Yuav ua li cas nws yog ib thiab rau dab tsi lub hom phiaj yog tsim nyog rau lub tsheb? Tam sim no thiab peb yuav ua tiag kom tau nws txoj kev. Nyob rau hauv xyoo tsis ntev los, peb txawm tawm ntawm ntau lawm tsheb, nyob rau hauv uas cov roj txhaj yog nqa tawm siv ib tug carburetor. Niaj hnub no tag nrho cov cav tov yog nruab nrog yuam kev txhaj tshuaj tshuab. Lawv ua hauj lwm yog ntau npaum li cas yooj yim, tab sis qhov tshwm sim tsis ua hauj lwm ntau dua. Nyob rau hauv kev, yog ib tug sensor yog tso tawm, lub cav pib ua hauj lwm kom raug.

Yuav ua li cas puas muaj tus tswj tsev?

Qhov no ntaus ntawv tseem hu ua lub "lub hlwb". Thiab nws yeej muaj tseeb, qhov no yog qhov dub box "xav" li lub engine muaj mus ua hauj lwm nyob rau hauv ntau hom. Nws yog tawm txhua txhua ob lub cev muaj zog tswj kaum tsis xaiv lub pom feem pua ntawm cov cua nyob rau hauv ib tug sib tov nrog petrol. Opens thiab kaw lub nozzle nyob rau hauv ib tug raws sijhawm, uas ua cov roj txhab khoom mus rau combustion chamber. Nws yog tsis zoo li hais tias ib tug neeg yuav xav hais tias raws li sai li lub tswj tsev. Kev cob cog rua rau nws, tsis tsuas sensors tab sis kuj Actuators. Piv txwv li, tib nozzles, raws li zoo raws li cov kev tswj ntawm idling thiab lwm tus neeg. Yuav kom ntsuam xyuas nyob rau hauv ntau yam lub hauv paus ntsiab lus ntawm lub lag luam, koj yuav tsum tau xav txog tus tsim ntawm tus ntaus ntawv. Tab sis nyob rau hauv tus lub ECU Circuit Court yog qhia nyob rau hauv tsab xov xwm.

Internal computer ntaus ntawv

Nws yog raws li nyob rau hauv ib tug microcontroller. Nws muaj tswv yim thiab tso zis ports uas kev twb kev txuas yog ua tag nrho cov actuators thiab sensors. Cov yav tas, peb yuav tsum hais ib tug uas ntsuas cov pa txaus. Nyob rau nws yam ntxwv yuav tsum tau tham yog yuav ua li cas lub mov ntawm Pib ntsais koj teeb lub tshuab hluav taws xob tswj tsev. Tag nrho cov sensors yog kev cob cog rua rau lub tswv yim ports los yog los ntawm txoj kev tshwj xeeb voltage dividers, los yog cov tib amplifiers rau lub OS. Qhov no amplifier theem rau tej daim los yog FET. Nrog lawv pab los ntawm nce lub teeb liab theem tswv yim los ntawm cov sensors. Tab sis O ports yog tsim nyog rau kev tswj. Nws yuav tsum tau muab sau tseg tias ECU pinout nyob rau hauv txawv lub tsheb sib txawv. Yog li ntawd, mus thov lub hlwb ntawm lub "Chevrolet" nyob rau hauv lub "Lada" yog tsis zoo li mus kawm tau ntawv zoo tsis muaj teeb meem loj rework. Piv txwv li, lub nozzles yog kev cob cog rua rau lawv. Tab sis tsis yog txhua yam li tej yam yooj yim, lub microcontroller tso zis chaw nres nkoj yuav tswj xwb ib tug tsis muaj zog load. Nyob rau hauv lwm yam lus, lub injector kauj rau nws yuav tsis tau kev cob cog rua ncaj qha. Yog li ntawd, ib tug tshwj xeeb los ua ke FET tsim nruab nrab ntawm lawv. Lawv cia koj mus txhim khu ntau lub sij hawm lub teeb liab los ntawm lub maub los. Lawv hu ua cov rooj sib txoos Darlington.

lub algorithm

Tab sis tsis muaj ib qho feem yuav tsis ua hauj lwm microcontroller - tsis muaj tus algorithm. Dig muag, nws yuav tsum tuaj raws li ib tsob ntoo uas muaj ntau ntau cov kev xaiv. Nws siv tag nrho cov "teeb meem" uas yuav tsum tau teb rau ib qho hauv lub hlwb. Piv txwv li, yog hais tias tus zaus ntawm kev sib hloov ntawm lub crankshaft txhab 2000 Rev. / min thiab cov pa concentration yog muaj tsawg tsawg heev, cov pa txaus tus nqi nce. Yuav ua li cas yuav ua rau lub engine nyob rau hauv xws li ib tug cov ntaub ntawv? Microcontroller instantly teb rau tag nrho cov ntawm cov lus nug no, cov ntsiab lus lub algorithm kom daws tau qhov teeb meem. Thiab ces tus khiav ua pulses ntawm cov qhov tso zis ports, ua nyob rau hauv lub cav mus rau lub qub xeev. Qhov no yog tsis ib yam dab tsi lwm yam tshaj li cov ECU firmware.

Qhov twg rau nruab rau hauv lub ECU?

Nws yog ntsia tau rau tag nrho cov kev txhaj tshuaj tsheb. Nrog nws, ib tug tsom xam thiab sib sau ua ke tag nrho cov ntaub ntawv los ntawm lub lub pom tej nyob rau hauv lub internal combustion engine. Tu siab, tej zaum cov hluav taws xob kev tswj chav tsev tsis. Yog li ntawd, nws yuav tsum tau hloov. Ua ntej nqa tawm kho txuam nrog kev tshem tawm ntawm lub tshuab hluav taws xob tsev, koj yuav tsum tau disconnect lub hwj chim daim phiaj tag nrho tsheb. Rau no disconnect lub roj teeb tsis zoo davhlau ya nyob twg. Qhov no yuav tiv thaiv kom txhob lo luv luv circuits nyob rau hauv qhov hluav taws xob Circuit Court. Nco ntsoov tias txawm momentary luv luv Circuit Court yooj yim ntxias tso zis los ntawm tus txheej xwm ntawm tej lub Cheebtsam, tshwj xeeb yog semiconductors nyob rau hauv cov kev tswj chav tsev, thiab fuses. Nco ntsoov tias, qhov chaw uas lub ECU. Nyob rau hauv thawj lub tsheb "Lada Kalina", piv txwv li, nws yog nyob hauv lub radiator qhov cub. Thiab thaum ib tug to tswj tsev instantly noj.

Tshem tawm ntawm lub tshuab hluav taws xob tswj tsev

Yog hais tias peb coj li cov piv txwv ntawm ib lub tsheb Vaz 2107, lub ECU nws (nws yog dab tsi, koj twb paub) yog nyob rau hauv lub dashboard, nyob rau hauv lub neeg nrog caij lub footwell cheeb tsam. Kom nws yooj yim dua mus muab rho lub ntaus ntawv, koj yuav tsum tau tshem tawm cov txee, uas yog ncaj qha nyob rau hauv lub hnab looj tes compartment. Ua li no, koj yuav tsum unscrew lub screws uas ruaj ntseg rau tus parprizu. Yuav kom muab kev nkag tau mus rau lub tshuab hluav taws xob tswj tsev, nws tseem yog tsim nyog rau lauj cov bracket, nyob rau hauv uas lub fuses, relays, thiab kev khiav hauj lwm nyob rau hauv no kho vajtse. Tam sim no koj muaj peev xwm tig tawm lub tshuab hluav taws xob thaiv tag nrho cov nyob ntawm tej. Taag lub cev los ntawm txhais tau tias ntawm ob screws rau lub tsheb lub cev. Thaum ib tug tseem ceeb pab rau "10", unscrew lub noob txiv thiab tag tshem tawm cov tswj tsev. Tus ntawd yog nws, lub cav tswj tsev kiag muab tshem tawm, nws yog npaj txhij rau kho los yog hloov. Installation ntawm ib tug ntawv tshiab yog ua li cas nyob rau hauv rov qab kev txiav txim.

mob sensors

Xav txog cov piv txwv domestic Vaz, uas yog ib qho tseem ceeb DMRV nyiaj tag nrho cov yam ntxwv uas yuav tsum yuav tsum tau kom zoo roj txhaj tshuaj. Raws li koj paub, tag nrho cov ntaub ntawv uas yog tau txais los ntawm qhov no ntaus ntawv muaj feem xyuam rau lub lag luam ntawm tag nrho cov cav. Tseem ceeb heev ECU firmware, los yog es, nws yog ib tug roj card, nyob rau hauv uas ob peb tseem ceeb tsis nteg. Nyob rau hauv kev, tus nqi ntawm cov huab cua thiab roj txhab khoom mus rau nruab nrab kem rau cov carburetion, cav ceev thiab cav load. Ua ntej nqa tawm kev hloov ntawm no ntaus ntawv, nws yog tsim nyog los tuav ib tug me me diagnostics. Ib tug thawj daim tshev yuav ua tau siv ib tug pa multimeter. Nrog nws yuav tsum khij lub voltage nqi yog tam sim no nyob rau sensor terminals.

Ua li no, unplug nws los ntawm qhov plug. Multimeter teem rau ntawm ib txoj hauj lwm uas tus voltage ntsuas yog ua. Tsis zoo txhuas kev cob cog rua rau lub internal combustion engine loj. Nrog lub ignition voltage ntsuas yog nqa tawm nyob rau hauv lub thib tsib tshem ntawm lub plug mus rau lub sensor. Reference cov ntsiab lus yuav tsum tau khaws cia nyob rau hauv ib tug nqi ntawm txog 12 volts. Yog hais tias muaj yog ib tug muaj zog sib txawv, ces muaj yog ib tug malfunction ntawm lub engine ECU los yog lub siab tawg tag xov mus rau lub sensor. Nyob rau hauv lub plaub tso zis yuav tsum hais txog 5 volts. Yog hais tias muaj yog ib tug tseem ceeb sib txawv los ntawm cov nqi no, yog vim li cas rau qhov no kuj yog ib tug ua txhaum ntawm lub xov los yog hais tias nws cov lus dag nyob rau hauv cov kev tswj chav tsev.

Hloov ntawm huab cua khiav sensor - ib tug ruaj khov kev lag luam ntawm lub cav thiab lub computer

Tam sim no koj paub txog computers. Yuav ua li cas yog nws, rau li cas lub hom phiaj koj yuav tsum paub. Nws yog lub sij hawm los tham ib tug me ntsis txog cov xab ntaus ntawv, uas cuam tshuam rau nws cov tseeb lag luam. Hloov cov sensor yog haum yooj yim. Ua li no, siv ib tug Phillips ntswj ntsia hlau, plam lub clamp, uas yog txuas nozzle. Ntxiv shooting lub tes tsho, uas yog nqa tawm rau saum huab cua qhov hluav taws xob. Tom qab ntawd wrench "10" yog tsim nyog los tshem tawm cov ob screws uas MOUNT ua MAF sensor ncaj qha mus rau cov huab cua lim. Tom qab ntawd, lub sensor yuav tshem tawm tag nrho. Txhim kho lub tsev nyob rau hauv rov qab kev txiav txim. Yog hais tias koj tshem tawm cov sensor rau tu, tsis txhob sim mus ua hauj lwm thaum lub sij hawm ntxuav kauv, kov nws nrog koj ob txhais tes los yog lwm yam khoom. Nws tso cai nkaus xwb txau ib cov tshuaj tsuag mus rau qhov chaw ntawm lub platinum hlau.

xaus

Koj paub ib tug me ntsis txog computers. Yuav ua li cas yog nws, yeej to taub. Vim li cas nws yuav tsum tau lub tsheb - heev. Sim saib xyuas tus txheej xwm ntawm tsis tsuas yog lub tshuab hluav taws xob tsev, tab sis kuj rau sensors thiab actuators. Lawv yuav tsum tau yuav tsum tau nyob rau hauv zoo meej mob, uas muaj tsis muaj teeb meem.

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