spark plugs, anowanzozivikanwa semoto plugs, achashanda sekuputika kwe-high-voltage piezoelectric discharge kubva kune-high-voltage lead (fire plug), iyo ichaputsa mhepo pakati pe electrodes ye spark plugs, inogadzira magetsi emagetsi ekupisa gasi musanganiswa muhumburumbira. Iwo ekutanga mamiriro emhando yepamusoro injini: yakakwirira simba yakagadzikana spark, yunifomu musanganiswa, yakakwirira compression ratio. Mota dzine injini dzinopisa mukati dzinowanzoshandisa peturu nedhiziri. Mumusika wemotokari weChina, mota dzepeturu dzinotora chikamu chikuru. Injini dzepeturu dzakasiyana neinjini dzedhiziri nekuti peturu ine nzvimbo yepamusoro yekubatidza (inotenderedza 400 madhigirii), iyo inoda kupisa kwekumanikidza kuti kuvese musanganiswa. Kuburikidza nekuyerera pakati electrodes kubudisa sparks, peturu injini iri kuburikidza mafuta uye gasi muvhenganiswa panguva combustion kuti abudise simba, asi sezvo peturu peturu kunyange munzvimbo tembiricha nharaunda zvakaoma kuti dzinongoitika combustion, kuitira kuti kupisa kwayo nenguva yakakodzera kushandisa "moto" kupfuta. Pano iyo spark ignition ndiyo "spark plug" basa
