Ntchito yogwiritsira ntchito sensor yogogoda galimoto
Ntchito yaikulu ya sensa yogogoda yagalimoto ndi kuzindikira kugogoda kwa injini, ndikuletsa kugogodako mwa kusintha ngodya yoyatsira moto, kuti injini isawonongeke.
Sensa yogogoda imasintha kugwedezeka kwa makina a injini kukhala zizindikiro zamagetsi zomwe zimatumizidwa ku unit yowongolera zamagetsi (ECU). ECU imasintha Angle yoyatsira moto molingana ndi chizindikiro cholandiridwa kuti ipewe kuphulika kosalekeza. Sensa yogogoda nthawi zambiri imagwiritsa ntchito ukadaulo wa piezoelectric ceramic. Injini ikagwedezeka, ceramic imakanizidwa ndikusinthidwa kuti ipange chizindikiro chamagetsi, chomwe chimatumizidwa ku ECU kudzera mu waya wotetezedwa kuti chigwiritsidwe ntchito.
Mfundo yogwirira ntchito ya sensa yogogoda imachokera ku mphamvu ya piezoelectric, injini ikagogoda, zoumba za piezoelectric zomwe zili mkati mwa sensa zimakanidwa, zomwe zimapangitsa chizindikiro chamagetsi. Zizindikirozi zimatumizidwa ku ECU, yomwe imasintha Angle yoyatsira moto kutengera deta yosungidwa kuti isagogode. Kuphatikiza apo, masensa ogogoda amatha kumva liwiro ndi malo a injini, kupereka zambiri zambiri kuti zithandize kukonza magwiridwe antchito a injini.
Chojambulira chogogoda nthawi zambiri chimayikidwa pamalo enaake mu injini, monga pakati pa masilinda awiri ndi atatu a makina a masilinda anayi kapena pakati pa masilinda 1 ndi 2 ndi silinda 3 kapena 4. Malo ake oyikira amatsimikizira kuti injini imagwidwa mosavuta ndi kugwedezeka pang'ono.
Ngati sensa yogogoda yalephera, ngakhale kuti siidzapangitsa kuti injini ilephere kuyatsa, ingayambitse mavuto monga kugwedezeka kwa injini, kutayika kwa mphamvu, kuwonongeka kwa mafuta, ndi magetsi olakwika. Chifukwa chake, kugwira ntchito bwino kwa sensa yogogoda ndikofunikira kwambiri pakugwira ntchito bwino kwa injini.
Sensor yogogoda yamagalimoto ndi chipangizo chomwe chimayikidwa pa block ya injini, chomwe chimagwiritsidwa ntchito kwambiri kuzindikira kugogoda kwa injini. Pali mitundu yambiri ya masensor ogogoda, omwe nthawi zambiri amaphatikizapo magnetostrictive ndi piezoelectric ceramic.
Mtundu ndi kapangidwe ka sensa yogogoda
Magnetostrictive : imakhala ndi magnetic core, magnetic permanent ndi induction coil. Injini ikagwedezeka, magnetic core imasuntha, zomwe zimapangitsa kusintha kwa magnetic flux mu induction coil, zomwe zimapangitsa mphamvu ya electromotive yomwe imayambitsa .
piezoelectric ceramic: Injini ikagwedezeka, ceramic mkati mwake imafinyidwa kuti ipange chizindikiro chamagetsi. Chifukwa chizindikirocho ndi chofooka, chingwe cholumikizira nthawi zambiri chimakulungidwa ndi waya wotetezedwa .
piezoelectric resonance: yoyikidwa pamwamba pa thupi la injini, kugwiritsa ntchito piezoelectric effect kusintha kugwedezeka kwa makina kukhala zizindikiro zamagetsi. Pamene kugwedezeka kwa kugwedezeka kukugwirizana ndi kuchuluka kwachilengedwe kwa sensa, chodabwitsa cha resonance chidzachitika, ndipo mphamvu yayikulu ya chizindikiro cha kugwedezeka idzatulutsidwa ku ECU, malinga ndi zomwe ECU idzasintha nthawi yoyatsira kuti isagwedezeke.
Momwe sensa yogogoda imagwirira ntchito
Chojambulira chogogoda chimamva kugwedezeka ndi phokoso la injini ndipo chimawasandutsa zizindikiro zamagetsi zomwe zimatumizidwa ku unit control unit (ECU). ECU imakonza Angle yoyatsira moto molingana ndi chizindikiro cholandiridwa kuti isachitike kuphulika. Mfundo yeniyeni yogwirira ntchito ndi iyi:
Kugwedezeka kwa Magnetostrictive : kugwedezeka kwa injini kumapangitsa kuti magnetic core isunthe, kusintha maginito flux mu induction coil, zomwe zimapangitsa kuti mphamvu ya electromotive ipangidwe.
piezoelectric ceramic: injini ikagwedezeka, piezoelectric ceramic imafinyidwa kuti ipange chizindikiro chamagetsi, ECU imasintha nthawi yoyatsira malinga ndi chizindikirocho.
Mtundu wa resonance wa piezoelectric : pamene ma frequency a kugwedezeka kwa knock akugwirizana ndi ma frequency achilengedwe a sensa, pamakhala vuto la resonance, ndipo voteji yayikulu ya chizindikiro cha knock imatuluka ku ECU.
Udindo wa masensa ogogoda m'magalimoto
Ntchito yaikulu ya sensa yogogoda ndiyo kuyeza digiri ya jitter ya injini. Injini ikagunda, chizindikiro chamagetsi chimatumizidwa ku ECU, ndipo ECU imasintha Angle yoyendetsera moto kuti isagwedezeke. Kugunda kungayambitse kuwonongeka kwa injini, kotero masensa ogogoda amachita gawo lofunika kwambiri poteteza injini.
Ngati mukufuna kudziwa zambiri, pitirizani kuwerenga nkhani zina patsamba lino!
Chonde tiimbireni foni ngati mukufuna zinthu zotere.
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