Chigadzirwa uye musimboti wekushanda kweDMRV

Kuti uve nechokwadi cheyakanaka peturu yekupisa maitiro uye kutevedzera zvakatemwa zviyero zviyero, zvinodikanwa kuti uone nenzira kwayo sezvinobvira kuyerera kwakawanda kwemhepo inopihwa kune injini masirinda, zvichienderana nemashandisirwo ayo maitiro. Maitiro aya anogona kudzorwa neese seti yema sensors: mweya yekudzvinyirira mweya, inodziya tembiricha, asi inonyanya kufarirwa ndeyemhepo inoyerera sensor (MAF), iyo dzimwe nguva inonziwo mita yekuyerera. Misa mweya inoyerera sensor inorekodha huwandu (huwandu) hwemhepo hunobva mudenga kuenda muinjini yekudyiwa yakawanda uye inoendesa iyi data kune yemagetsi control unit yekuzotevera kukarukureta yemafuta ekugovera.

Mhando uye maficha ekuyerera metres

Tsananguro yechidimbu cheDMRV - mass air flow sensor. Chigadzirwa chinoshandiswa mumota dzine peturu nedhiziri injini. Iyo inowanikwa mune yekudyira system pakati peyemhepo firita uye vhuvhuta vharafu uye inosangana kune injini ECU. Mukushaikwa kana kusashanda kwemameter yekuyerera, kuverenga kwehuwandu hwemhepo inopinda inoitwa nechinzvimbo chevharuvhu yekuvharira. Izvi hazvipe chiyero chakaringana, uye mumamiriro ezvinhu akaomarara ekushandisa, mafuta ekushandisa anowedzera, sezvo kuyerera kwemhepo kwakawanda kuri paramende yakakosha yekuverenga huwandu hwemafuta akabaiwa.

Iwo musimboti wekushanda kweiyo yakawanda mweya inoyerera sensor inoenderana nekuyera tembiricha yekuyerera kwemhepo, uye nekudaro iyi mhando yemvura inoyerera inonzi inopisa-waya anemometer. Mhando mbiri huru dzemasaisa mweya ekuyerera maseru akasarudzika:

• filament (waya);
• firimu;
• volumetric mhando ine butterfly vharuvhu (panguva iyo inenge isiri kushandiswa).

Dhizaini uye musimboti wekushanda kweiyo waya geji

Nitievoy DMRV ine mudziyo unotevera:

• dzimba;
• kuyera chubhu;
• inonzwisisika chinhu - platinamu waya;
• thermistor;
• voltage shanduko.

Iyo platinum filament uye thermistor zvese zviri resistive zambuko. Mukushayikwa kwekuyerera kwemweya, iyo platinamu filament inogara ichipisa kune yakatemerwa tembiricha nekupfuura yemagetsi mairi kuburikidza nayo. Kana vharuvhu yekuvhura ichivhura uye mweya wotanga kuyerera, chinhu chekunzwa chinotonhorera, izvo zvinoderedza kuramba kwayo. Izvi zvinokonzera kuti "kupisa" ikozvino kuwedzere kuenzanisa bhiriji.

Iyo inoshandura inoshandura shanduko dzazvino mune yazvino kuita yekubuda voltage, inoendeswa kune injini ECU. Iyo yekupedzisira, zvichibva pahukama huripo husina mutsetse, inotarisa huwandu hwemafuta anopihwa kumakamuri emoto.

Iyi dhizaini ine imwe yakakosha kudzoka - nekufamba kwenguva, zvinokanganisa zvinoitika. Chinhu chekunzwa chinopera uye kururamisa kwayo kunodonha Vanogona zvakare kusvibiswa, asi kugadzirisa dambudziko iri, iyo tambo yemhepo mweya yekuyerera maseru akaiswa mumotokari dzazvino ane yekuzvichenesa nzira. Inosanganisira kudziyisa kwenguva pfupi kwetambo kusvika pa1000 ° C neinjini yadzimwa, izvo zvinotungamira mukupiswa kwezvakasanganiswa.

Scheme uye maficha eDFID

Nheyo yekushanda kweiyo sensor yemafirimu iri munzira dzakawanda yakafanana neiyo filament sensor. Nekudaro, pane misiyano yakati wandei mune ino dhizaini. Panzvimbo petambo yeplatinamu, silicon kristaro yakaiswa sechinhu chikuru chinonzwika. Iyo yekupedzisira ine platinum inoputira, inosanganisira akati wandei matete matete (mafirimu). Imwe yeaya marongero akapokana anopikisa:

• kudziyisa;
• thermistors (pane maviri acho);
• mweya tembiricha yekunzwa.

Iko inoputira kristaro inoiswa mune imwe imba yakabatana neanopa magetsi chiteshi. Iyo ine yakasarudzika dhizaini iyo inokutendera iwe kuyera tembiricha ye kwete kwete chete inouya, asi zvakare inoyerera kuyerera. Sezvo mweya uchisvetwa mukati nemuchina, kuyerera kwacho kwakanyanya kwazvo, izvo zvinodzivirira tsvina kubva mukuunganidzwa pane chinhu chekunzwa.

Kungofanana neiyo filament sensor, chinhu chekunzwa chinopisa kusvika patembiricha yakatemerwa. Kana mweya uchipfuura nepakati peanopisa moto, mutsauko wekupisa unomuka, pahwaro hwekuti huwandu hwekuyerera hunobva mudenga hwakaverengerwa. Mukugadzirwa kwakadai, chiratidzo cheinjini ECU chinogona kupihwa zvese mumhando yeanalogog (inobuda magetsi), uye mune imwe yemazuva ano uye iri nyore fomati yedigital.

Mhedzisiro uye zviratidzo zvekusashanda kweiyo yakawanda mweya inoyerera sensor

Sezvineiwo nemhando ipi neipi yeinjini sensor, zvikanganiso muhukuru hwemhepo inoyerera sensor zvinoreva zvisirizvo kuverenga kweinjini ECU uye, semhedzisiro, isiriyo mashandiro ejekiseni system. Izvi zvinogona kukonzera kuwandisa kwemafuta ekushandisa kana, nekusiyana, kusakwanira kupihwa, izvo zvinoderedza injini simba.

Zviratidzo zvinonyanya kushamisa zvekusashanda kwema sensor:

• Kuonekwa kwechiratidzo che "Check Engine" padashboard yemotokari.
• Kuwedzera kwakakosha mukushandisa kwemafuta panguva yekushanda kwese.
• Kuderedza kusimba kweinjini kumhanyisa.
• Dambudziko nekutanga injini uye kuitika kwekumira kwakangoitika mukushanda kwayo (matangi enjini).
• Kushanda chete pane imwe chaiyo yekumhanyisa nhanho (yakaderera kana yakakwira).

Kana iwe ukawana zviratidzo zvechinetso neiyo MAF sensor, edza kuremadza iyo. Kuwedzera kwesimba reinjini kuchave kusimbiswa kwekuparara kweDMRV. Muchiitiko ichi, ichafanira kucheneswa kana kutsiviwa. Muchiitiko ichi, zvakafanira kusarudza iyo inzwa inokurudzirwa nemugadziri wemota (ndokuti yekutanga).