I-YS i-double-cylinder fuel injection pump, i-pump body ithatha ukukhishwa kwe-high-pressure, uma kuqhathaniswa nobuchwepheshe bendabuko, ingxenye yomkhono we-flange efakwe emzimbeni wepompo iyasuswa, isihlalo se-valve yokulethwa sifakwe ngqo emzimbeni wepompo, kusetshenziswa izingxenye ezihlanganisiwe gwema ukugqoka ukuvuza kukaphethiloli okubangelwa ukusebenza kwesikhathi eside, futhi inani lezingxenye liyancipha, izindleko zokufakwa komsebenzi ziyancipha, futhi izinga lokuhluleka liyancipha.