Injector mmanụ ụgbọala nwere efere orifice dị nso na mpụta ahụ. Efere orifice ahụ nwere ihe dịpụrụ adịpụ nke mbụ na nke abụọ n'ebe dị anya n'ebe dị anya site na ibe ya na ebe orifice, orifice ahụ na-agbatị n'akụkụ axis ogologo ma na-agụnye elu nke mbụ na elu nke abụọ na-ekewapụ site na elu nke mbụ. N'elu nke mbụ na-agụnye mpaghara nke mbụ nwere njirimara elu nke mbụ na-adabere na ntụziaka mbụ nke oblique na axis longitudinal. N'elu nke abụọ na-agụnye mpaghara nke abụọ nwere njirimara elu nke abụọ na-agbado ụkwụ n'akụkụ nke abụọ na-aga n'ihu na axis ogologo. Injector mmanụ ụgbọala nwere ụlọ na-agbatị axis ogologo. Ụlọ ahụ na-agụnye ụzọ mbata, ụzọ ọpụpụ na ụzọ ụzọ nke a tụfuru n'etiti ọnụ ụzọ mbata na ebe ọpụpụ. Injector mmanụ ahụ n'ihu na-agụnye ihe na-eme ihe ọkụ eletrik dị nso na ntinye, onye na-eme ihe ọkụ eletrik gụnyere armature na ihe mkpuchi electromagnetic a mgbakọ valvụ, mgbakọ valvụ gụnyere onye mmechi na oche valvụ, onye mmechi na-arụ ọrụ iji kpuchido mmanụ na-asọba na ntinye ya. ọnọdụ nke mbụ na nke na-arụ ọrụ iji kwe ka mmanụ na-aga na efere orifice na ọnọdụ nke abụọ. A na-akọwa ọtụtụ ụzọ e si akpụ orifice n'akụkụ n'ime mpempe ọla nke enwere ike ịmepụta orifice nwere akụkụ site na orifice nwere akụkụ aka nri nke a haziri. Orifice nke ọ bụla nwere akụkụ nwere akụkụ oblique metụtara opekata mpe otu n'ime elu mbụ yana elu nke abụọ nke mpempe ọla.