Kodi sensor yogogoda imagwira ntchito bwanji mu injini, kapangidwe kake

Normal ntchito ya injini galimoto ndi kawirikawiri zotheka ngati ndondomeko kuyaka mafuta mu masilindala ake kusokonezedwa. Kuti mafuta aziyaka bwino, amayenera kukhala abwino, ndipo nthawi yoyatsira injini iyenera kukhazikitsidwa bwino. Pokhapokha pazifukwa izi, injini sichiwononga mafuta ndipo imatha kugwira ntchito mokwanira. Ngati vuto limodzi kulibe, kuthekera kwa detonation sikumachotsedwa. Sensa yogogoda yamagalimoto imathandiza kupewa izi.

Kuwotcha kwa detonation, ndi chiyani

Kuphulika kwa kusakaniza kwa mpweya wa mafuta mu injini kumatchedwa njira yoyaka moto yosalamulirika, yomwe zotsatira zake ndi "mini-kuphulika". Ngati kuyaka kwa mafuta kumachitika mwachizolowezi, lawi limayenda pa liwiro la pafupifupi 30 m / s. Ngati kuphulika kumachitika, kuthamanga kwa lawi kumawonjezeka kwambiri ndipo kumatha kufika 2000 m / s, zomwe zimabweretsa kuwonjezeka kwa katundu ndi kuvala mofulumira kwa pistoni ndi masilinda. Chotsatira chake, ngati galimotoyo ilibe makina ogogoda, ingafunike kukonzanso kwambiri pambuyo pa makilomita 5-6 zikwizikwi.

Zomwe zimayambitsa kuphulika

Zomwe zimachititsa kuti mafuta azitenthedwa ndi awa:

• khalidwe loipa ndi nambala ya octane ya petulo: kutsika kwa octane, kumayipitsa kwambiri kukana kuphulika;
• kapangidwe ka injini kopanda ungwiro: kapangidwe ka chipinda choyatsira moto, mphamvu zopondereza mafuta, kusanja bwino kwa pulagi ya spark plug, ndi zina zambiri zitha kuthandizira kuphulika;
• zinthu zoipa zomwe injini imagwira ntchito: katundu, kuvala wamba, kukhalapo kwa mwaye.

Kodi sensor yogogoda imagwira ntchito bwanji?

Sensa yogogoda imagwira ntchito pa mfundo yokonza nthawi yoyatsira pamtengo womwe kuyaka koyendetsedwa kwa kusakaniza kwamafuta a mpweya kumabwezeretsedwa. Sensayi imagwiritsidwa ntchito pa injini zamagalimoto zamtundu wa jakisoni.

Pamene mafuta akuphulika, injini imayamba kugwedezeka kwambiri. Sensa imazindikira mawonekedwe a detonation ndendende pogwira kugwedezeka, komwe kumasinthidwa kukhala chizindikiro chamagetsi.

Zigawo zazikulu za sensor ndi:

• piezoceramic sensing element;
• wotsutsa;
• insulator;
• kulemera kwachitsulo.

Kuchokera ku chinthu cha piezoceramic, mawaya amapita kumagulu ndi kulemera kwachitsulo. Chotsutsa chomwe chimayang'anira mphamvu ya mphamvu yamagetsi imapezeka pazotulutsa. Chinthu chomwe chimawona mwachindunji kugwedezeka ndi kulemera - kumapangitsa kuti pakhale piezoelectric element.

Malo okhazikika a sensor yogogoda ali panyumba yamagalimoto, pakati pa ma silinda achiwiri ndi achitatu. Sensa sichimayankha kugwedezeka konse, koma kokha kwachilendo, ndiko kuti, pamafupipafupi kuchokera ku 30 mpaka 75 Hz.

Kusankhidwa kwa malo oterowo a sensa ndi chifukwa chakuti ndi yabwino kwambiri pakusintha ntchito ya silinda iliyonse ndipo ili pafupi ndi ma epicenters omwe amapezeka pafupipafupi.

Pamene kugwedezeka kumadziwika ndi sensa, zotsatirazi zimachitika:

• chinthu cha piezoelectric chimasintha mphamvu ya kugwedezeka kukhala magetsi, yomwe imawonjezeka ndi kukulitsa matalikidwe a kugwedezeka;
• pamlingo wovuta kwambiri, sensa imatumiza lamulo ku kompyuta yamagalimoto kuti isinthe nthawi yoyatsira;
• makina oyang'anira injini amawongolera kuchuluka kwamafuta ndikuchepetsa nthawi yanthawi isanayatse;
• chifukwa cha ntchito zomwe zachitika, ntchito ya injini imabwera pamalo abwino, kuwongolera kuyaka kwa kusakaniza kwamafuta a mpweya kumabwezeretsedwa.

Kodi kugogoda masensa

Mafuta ogogoda masensa ndi resonant ndi Broadband.

Masensa a Broadband ndi ofala kwambiri, ndi mapangidwe awo ndi mfundo za ntchito zomwe zafotokozedwa m'nkhaniyi. Kunja, amawoneka ozungulira, pakati ali ndi dzenje lolumikizira injini.

Ma resonance sensors ali ndi mawonekedwe akunja ndi masensa amafuta, amakhala ndi phiri loyenera. Sakonza kugwedezeka, koma mphamvu ya microexplosions mkati mwa chipinda choyaka moto. Pambuyo pozindikira ma microexplosions, wolamulira amalandira chizindikiro kuchokera ku sensa. The microexplosion frequency index pa motor iliyonse ndi yosiyana ndipo zimatengera kukula kwa pistoni.

Basic sensor malfunctions

Monga lamulo, pamene sensa sikugwira ntchito, chizindikiro cha "Check Engine" chimayatsa pa dashboard ya galimoto. Chizindikirochi chimatha kuyatsa mosalekeza kapena pang'onopang'ono ndikutuluka kutengera kuchuluka kwa katundu. Sensa yolakwika yogogoda sicholepheretsa kugwira ntchito kwa injini, koma sichingathe kuchenjeza dalaivala za zomwe zachitika ndikuyambitsa njira yochotsera.

Pali zizindikiro zingapo zosonyeza kuti sensor yogogoda ndiyoyipa:

• injini imatentha kwambiri, ngakhale kutentha kwa kunja kuli kochepa;
• kuwonongeka kowoneka bwino kwa mphamvu ndi kusuntha kwagalimoto popanda zizindikiro zilizonse zosokonekera;
• kuwonjezeka kwamafuta amafuta popanda zifukwa zomveka;
• kupezeka kwa mwaye waukulu pa spark plugs.

Dzichitireni nokha kugogoda sensa cheke

Ngati chimodzi mwazizindikiro zakusokonekera kwa sensor yogogoda chapezeka, ntchito yake iyenera kuyang'aniridwa. Ndikofunikira kuti kachipangizo kogogoda kafufuzidwe pamalo ochitira chithandizo, koma ngati mulibe nthawi kapena chilimbikitso chochitira izi, mutha kudziyang'anira nokha.

Choyamba muyenera kukonzekera multimeter mwa kukhazikitsa kukana mayeso pa izo - pafupifupi 2 kOhm. Kenako, muyenera kulumikiza chipangizocho ku sensa ndikuyesa kukana kwa ntchito. Popanda kuzimitsa chipangizocho, dinani pang'onopang'ono chinthu cholimba pamwamba pa nyumba ya sensor. Ngati panthawi imodzimodziyo mukhoza kuona kuwonjezeka kwa mtengo wotsutsa, ndiye kuti sensor ndi yachibadwa.

Sensa yogogoda yamafuta imakhala ndi gawo laling'ono koma lofunikira pakuwongolera magwiridwe antchito a injini yamagalimoto. Kusalala kwa kukwera, mphamvu ndi mphamvu zamagalimoto zimatengera ntchito ya sensa. Sensa yolakwika ndiyosavuta kuizindikira ndipo, ngati kuli kofunikira, isintheni nokha.