Galimoto yogogoda sensor ntchito
Ntchito yayikulu ya sensa yogogoda yamagalimoto ndikuzindikira kugogoda kwa injini, ndikuletsa kugogodako posintha Angle yoyatsira, kuteteza injini kuti isawonongeke. ku
Sensa yogogoda imatembenuza kugwedezeka kwamakina kwa injini kukhala ma siginecha amagetsi omwe amatumizidwa ku gawo lowongolera zamagetsi (ECU). ECU imasintha mbali yoyatsira moto molingana ndi siginecha yomwe idalandiridwa kuti ipewe kuphulika kosalekeza. Sensa yogogoda nthawi zambiri imagwiritsa ntchito ukadaulo wa piezoelectric ceramic. Injini ikagwedezeka, ceramic imakanikizidwa ndikupunduka kuti ipange chizindikiro chamagetsi, chomwe chimaperekedwa ku ECU kudzera pawaya wotetezedwa kuti akonze.
Mfundo yogwira ntchito ya sensa yogogoda imachokera ku mphamvu ya piezoelectric, pamene injini ikugogoda, zoumba za piezoelectric mkati mwa sensa zimafinyidwa, ndikupanga chizindikiro chamagetsi. Zizindikirozi zimatumizidwa ku ECU, yomwe imasintha njira yoyatsira kutsogolo kutengera zomwe zasungidwa kuti zipewe kugogoda. Kuphatikiza apo, masensa ogogoda amatha kuzindikira kuthamanga ndi malo a injini, kupereka zambiri zambiri zothandizira kukhathamiritsa kwa injini.
Sensa yogogoda nthawi zambiri imayikidwa pamalo enaake mu chipika cha injini, monga pakati pa 2 ndi 3 masilindala a makina anayi kapena pakati pa 1 ndi 2 silinda ndi 3 kapena 4 silinda. Malo ake okwera amaonetsetsa kuti injiniyo imatha kugwedezeka ndikugogoda.
Ngati sensa yogogodayo ikalephera, ngakhale kuti sichingapangitse injini kulephera kuyambitsa, idzayambitsa mavuto monga injini jitter, kutayika kwa mphamvu, kuwonongeka kwa mafuta, ndi magetsi. Chifukwa chake, kugwira ntchito moyenera kwa sensor yogogoda ndikofunikira pakuchita bwino kwa injini.
Sensor yogogoda yamagalimoto ndi chipangizo chomwe chimayikidwa pagawo la injini, chomwe chimagwiritsidwa ntchito kwambiri kuzindikira kugogoda kwa injini. Pali mitundu yambiri ya masensa ogogoda, omwe amadziwika kwambiri ndi magnetostrictive ndi piezoelectric ceramic.
Mtundu ndi kapangidwe ka sensor yogogoda
Magnetostrictive : imakhala ndi maginito core, maginito osatha ndi coil induction. Injini ikagwedezeka, maginito apakati amasintha, zomwe zimapangitsa kusintha kwa maginito mu coil yolowetsa, zomwe zimapangitsa kuti pakhale mphamvu yamagetsi.
piezoelectric ceramic : Injini ikagwedezeka, ceramic mkati mwake imafinya kuti ipange chizindikiro chamagetsi. Chifukwa chizindikirocho ndi chofooka, chingwe cholumikizira nthawi zambiri chimakulungidwa ndi waya wotetezedwa.
piezoelectric resonance : yoyikidwa pamwamba pa injini ya injini, kugwiritsa ntchito piezoelectric effect kutembenuza kugwedezeka kwamakina kukhala zizindikiro zamagetsi. Pamene kugwedeza kugwedezeka kwafupipafupi kumagwirizana ndi ma frequency achilengedwe a sensa, zochitika za resonance zidzachitika, ndipo mphamvu yogogoda yogogoda idzatuluka ku ECU, malinga ndi momwe ECU idzasinthira nthawi yoyatsira kuti isagwetse.
Momwe sensor yogogoda imagwirira ntchito
Sensa yogogoda imamva kugwedezeka ndi kumveka kwa injini ndikuzisintha kukhala zizindikiro zamagetsi zomwe zimatumizidwa ku injini yoyang'anira injini (ECU). ECU imasintha mbali yoyatsira moto molingana ndi siginecha yomwe idalandilidwa kuti ipewe kuphulika. Mfundo yeniyeni yogwirira ntchito ndi iyi:
Magnetostrictive: Kugwedezeka kwa injini kumapangitsa kuti maginito asunthe, kusintha kusinthasintha kwa maginito mu coil yolowera, zomwe zimapangitsa kuti pakhale mphamvu yamagetsi.
piezoelectric ceramic : injini ikagwedezeka, piezoelectric ceramic imafinyidwa kuti ipange chizindikiro chamagetsi, ECU imasintha nthawi yoyatsira molingana ndi chizindikirocho.
Mtundu wa piezoelectric resonance : Pamene kugwedezeka kwa kugwedezeka kumagwirizana ndi ma frequency achilengedwe a sensa, zochitika za resonance zimachitika, ndipo mphamvu yogogoda yogogoda imatuluka ku ECU.
Udindo wa masensa ogogoda m'magalimoto
Ntchito yayikulu ya sensor yogogoda ndikuyesa kuchuluka kwa jitter kwa injini. Injini ikatulutsa, chizindikiro chamagetsi chimatumizidwa ku ECU, ndipo ECU imasinthanso Angle yoyatsira moyenerera kuti isapitirire kugogoda. Kugogoda kumatha kuwononga injini, chifukwa chake masensa ogogoda amatenga gawo lofunikira poteteza injini.
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