Injector inodzorwa neelectromagnetic coil, uye switching ye electromagnetic coil ikozvino inodzorwa neECU. Iyo ECU inobata chiratidzo chakadzoserwa ne sensor uye inotumira chiratidzo chemagetsi kune injector. Chiratidzo chemagetsi chinotarisa nguva iyo jekiseni rinovhura uye rinobaya peturu. Iyi nguva yenguva inonzi "pulse width" yejekiseni. Kana iyo solenoid coil yeinjector yakasimbiswa, simba remagineti rinogadzirwa. Pasi pechiito chemagnetic field, plunger inokunda simba rechitubu uye inosvetwa kumusoro, ichitora muviri wevhavha kure nechigaro chevharuvhu, uye peturu inobudiswa kubva mumuromo pasi pekumanikidzwa; apo iyo solenoid coil inopera simba, iyo magnetic field inonyangarika. , plunger inofamba ichidzika pasi pechiito chesimba rechirimo, uye muviri wevharuvhu unotsimbirira chigaro chevharuvhu kuti uvhare muromo wekuvhura, uye peturu haigone kutiza. Muviri wevharuvhu wakakamurwa kuita mhando mbiri zvichienderana nechimiro chayo: bhora vharafu uye vharafu yetsono. Kuti uone kurongeka kwejekiseni remafuta, bhoti yebhora kana vheji yetsono uye chigaro chevhavha inoda kukwirira kwekugadzirisa, uye kusimudza kwemuviri wevhavha iduku zvikuru, inenge 0.1 mm chete. Pamusana pekushanda kwemutongi wekumanikidza, kune mhepo yepamusoro-soro yemafuta pamberi peinjector, uye kuderera kwakadzika muhuwandu hwekutora shure kwayo. Musiyano wekumanikidza unoumba kudzvanywa kwakashata, kuve nechokwadi chekuti mafuta anopinzwa mumhute pedyo nevharuvhu yekudya.

Kunyangwe iyo yakawanda-inodzorwa nemagetsi inodzorwa jekiseni system ine jekiseni kune yega silinda, huwandu hwemafuta hwakabaiwa nejekiseni hunotarwa nehupamhi hwepurusi, izvo zvinoreva kuti huwandu hwemafuta jekiseni hunoenderana nenguva yekuvhurwa kwejekiseni. Asi zvakananga kune akasiyana majekiseni emafuta mafomu, haasi ese akafanana. Kune general multi-point mafuta jekiseni masisitimu (MPI) uye anoteedzana mafuta jekiseni masisitimu (SFI).