Popuke ya feri ni ugutwara gaze yakozwe na gaze yanyuze mu gikorwa cya moteri hanyuma ikagera kuri paki yindege binyuze muri cheque. Noneho kuri pompe nkuru, intambwe yumushoferi kuri pompe nkuru, piston ya pompe nkuru yimuka, hanyuma imfashanyo yo hanze yinkweto ya feri, hanyuma imfashanyo yo hanze yiruka, hanyuma ingoma yinyuma ifatanije ningoma yimodoka mu gutwara ibinyabiziga mu gutwara.
Ihame ry'akazi rya feri ya Automobile Sub-Pompe ni:
1, ihame ryingenzi rya feri ni kuva ku makimbirane, hifashishijwe feri ya feri na feri (Ingoma) na Tiro na Tiro na Tine. Imbaraga za kinetic zizahindurwa ingufu nyuma yo guterana amagambo, imodoka izahagarara;
2, gahunda nziza ya feri ifite ingaruka nziza igomba gutanga imbaraga zihagarara, zihagije, kandi zifite akamaro kagereranijwe ziva kuri feri na buri pompe, kandi ukarinde kugabanuka kwangiza kandi feri ya feri yahohotewe;
3, sisitemu ya feri yimodoka ikubiyemo feri ya feri na feri yingoma, ariko usibye feri yingoma, imikorere yinkerarugero yingoma iri munsi ya feri ya disiki, bityo sisitemu ya feri yaganiriweho muri uru rupapuro nayo izaba ishingiye gusa kuri feri ya disiki gusa. Hano hari byinshi byo kuvugwa kubwiza bwimodoka yawe nshya
