Mitundu ya jakisoni wamba wamba akhoza kugawidwa m'magulu awiri: majekeseni a singano ndi orifice standard jekeseni.Mwa iwo, ma jakisoni wamba a pivot amaphatikiza ma jakisoni amtundu wa S ndi ma jakisoni amtundu wa T a pivot.Ma pivots otsatizana a S amagwiritsidwa ntchito kwambiri pakuwongolera mapampu ang'onoang'ono ndi apakatikati amagetsi amagetsi, ma pivots amtundu wa T amagwiritsidwa ntchito pakuwongolera mapampu amagetsi amagetsi amagetsi (monga mapampu amafuta apamadzi / oyendetsa injini);Kampani yaku Germany BOSCH ili ndi ma jekeseni osiyanasiyana amtundu wa orifice, omwe ndi oyenera kuthetsa mitundu yosiyanasiyana ya mapampu a jakisoni wamafuta.Pakali pano, majekeseni amtundu wa orifice akudziko langa akuphatikiza majekeseni otsika a inertia orifice standard ndi majekeseni wamba wamba.Popanga mapampu a jakisoni wamafuta, ma inertia orifice otsika mafuta ojambulira amagwiritsidwanso ntchito kwambiri.Mapampu a jakisoni wamafuta amtundu wa T adziwika kwambiri mdziko lathu.The low inertia orifice standard mafuta jekeseni amagwiritsidwa ntchito kuthetsa mtundu uwu wa pampu yojambulira mafuta, yomwe imatha kuthetsa mavuto omwe anachitika pothetsa mtundu uwu wapope yojambulira mafuta m'mbuyomu.Mwachitsanzo: n'zovuta kuthetsa kufanana kwa silinda iliyonse, ndipo n'zovuta kulingalira kufanana kwa liwiro lovotera, kuthamanga kwa torque, kuthamanga kwachitsulo, ndi zina zotero.
