Ignition coils ua haujlwm raws li lub hauv paus ntsiab lus ntawm electromagnetic induction; lawv txoj haujlwm yog los hloov cov hluav taws xob qis uas tau muab los ntawm lub tsheb lub roj teeb (feem ntau 12V) rau hauv qhov hluav taws xob siab (feem ntau yog li ntawm 15,000 txog 30,000 volts) txaus los txuas qhov sib txawv ntawm cov electrodes ntawm lub txim hluav taws xob. Cov txheej txheem ua haujlwm muaj ob theem: lub zog cia thiab hloov hluav taws xob. Thaum lub hauv paus coil txuas nrog lub zog hluav taws xob, tam sim no ntws los ntawm nws, ua kom muaj zog sib nqus, thiab lub zog yog khaws cia hauv cov tub ntxhais hlau. Thaum lub tshuab hloov pauv cuam tshuam rau thawj kauj voj voog, cov hlau nplaum nrawm nrawm; Qhov kev hloov pauv sai hauv qhov chaw sib nqus no ua rau muaj qhov hluav taws xob siab heev hauv cov coil thib ob.
Nyob rau hauv cov nqe lus ntawm magnetic Circuit Court qauv, ignition coils feem ntau muab faib ua ob hom: qhib magnetic Circuit Court thiab kaw magnetic circuit. Kaw sib nqus hluav taws xob hluav taws xob hluav taws xob coils muaj qhov ua haujlwm tseem ceeb thiab theem nrab windings raug mob nyob ib puag ncig ib puag ncig lossis square- zoo li cov tub ntxhais hlau, yog li tsim lub voj kaw sib nqus rau cov kab sib nqus flux. Cov qauv no muaj ntau yam zoo, nrog rau qhov sib nqus sib nqus tsawg, tsis tshua muaj hlau nplaum tsis kam, tsis muaj zog poob, siab zog hloov dua siab tshiab, thiab compact loj; yog li ntawd, nws yog dav siv nyob rau hauv niaj hnub electronic ignition systems.
Kev ua haujlwm ntawm cov ignition coils niaj hnub no yog tswj hwm los ntawm Lub Chaw Tswj Xyuas Lub Cav (ECU). Lub ECU tswj lub energization lub sij hawm ntawm thawj kauj (lub npe hu ua "lub kaum sab xis") thiab lub caij nyoog ntawm ignition kom hloov mus rau txawv engine speeds thiab load tej yam kev mob.
Txhawm rau kom ruaj khov ua haujlwm nyob rau hauv ib puag ncig hnyav uas muaj qhov kub thiab txias, siab voltages, thiab kev co, niaj hnub ignition coils feem ntau siv cov txheej txheem rwb thaiv tsev zoo tshaj plaws, xws li lub tshuab nqus tsev nrog epoxy resin. Cov khoom no siv cov thermosetting resins ua insulating fillers kom ua tiav cov khoom siv rwb thaiv tsev zoo, sealing kev ncaj ncees, thiab muaj peev xwm ua kom sov.
Lub evolution ntawm ignition coils qhia ib tug qauv mus rau kev koom ua ke thiab modularization. Qee cov qauv tsheb tam sim no suav nrog kev tsim qauv sib xyaw ua ke- xws li ib tus neeg ignition coils (ib lub kauj rau ib lub tog raj kheej) lossis "miv-hom" coils- uas tau txuas ncaj qha mus rau lub txim hluav taws xob. Txoj kev tsim qauv no ua haujlwm kom txo qis siab -voltage kab poob thiab txo tus naj npawb ntawm cov ntsiab lus tsis ua hauj lwm hauv qhov hluav taws xob.
