Amaphampu omjovo kaphethiloli angu-320-2512 angahlukaniswa ikakhulukazi abe yizinhlobo ezintathu: iphampu yomjovo kaphethiloli we-plunger, i-fuel injection pump-injector kanye ne-rotor distribution fuel injection pump. Phakathi kwazo, i-plunger fuel injection pump inomlando omude kakhulu futhi isetshenziswa kakhulu ngokuthembeka okuphezulu;