Iindidi zee-injection ezisemgangathweni zinokwahlulwa zibe ngamacandelo amabini: ii-injection eziqhelekileyo zenaliti kunye ne-orifice standard injectors. Phakathi kwazo, ii-injection zepivot ezisemgangathweni ziquka i-S series pivot ii-injector ezisemgangathweni kunye ne-T series pivot ii-injector ezisemgangathweni. I-S series pivots zisetyenziswa ikakhulu ukulungisa iimpompo ze-injini yamandla amancinci naphakathi, iimpompo ze-T ze-pivots zisetyenziselwa ukulungisa iimpompo zesitofu se-injini yamandla aphezulu (ezifana neempompo zeoyile ye-injini yolwandle/yelocomotive); Inkampani yaseJamani ye-BOSCH ineentlobo ngeentlobo zee-injection ze-orifice eziqhelekileyo, ezilungele ukulungisa iintlobo ezahlukeneyo zeempompo ze-fuel injection. Okwangoku, ii-injection eziqhelekileyo zelizwe lam zibandakanya ii-injection ezikumgangatho ophantsi we-inertia orifice kunye nee-injection eziqhelekileyo ezisemgangathweni. Ngokuphuhliswa kweempompo zokutofa kwamafutha, ii-injection ze-inertia ephantsi ye-orifice ezisemgangathweni nazo zisetyenziswa ngokubanzi. Iimpompo zesitofu sohlobo lwe-T ziye zaziwa ngakumbi nangakumbi kwilizwe lethu. Isitofu esisezantsi se-inertia orifice esisezantsi sisetyenziselwa ukulungisa olu hlobo lwempompo yokutofa kwamafutha, enokusombulula kakuhle iingxaki ezenzeke xa kulungiswa olu hlobo lwempompo yokutofa kwamafutha kwixesha elidlulileyo. Umzekelo: kunzima ukulungisa i-uniformity ye-cylinder nganye, kwaye kunzima ukuqwalasela ukufana kwesantya esilinganiselweyo, isantya esiphezulu se-torque, isantya esingenamsebenzi, njl.