Muchirongwa cheMPI, majekiseni akakamurwa kuita mapoka, uye majekiseni ari muboka rimwechete anovhurwa panguva imwe chete. Semuenzaniso, 4-cylinder muchina majekiseni akakamurwa kuita mapoka maviri, rimwe nerimwe boka remajekiseni maviri, aya mapoka maviri emajekiseni anochinjana kupfapfaidza mafuta, injini crankshaft kutendeuka kwese kune boka remajekiseni ekupfapfaidza mafuta. Iyi sisitimu yemajekiseni yakabatanidzwa mukufanana, iyo ECU chete paboka rimwechete remajekiseni ese anotumira chiratidzo chimwe chete, majekiseni ari panguva imwe chete yekuvhura nekuvhara, iyo programming iri nyore kurerutsa dunhu remagetsi, asi iri nekuda kwemamiriro akasiyana einjini yekushaikwa kwekuchinja zvisina kujairika mubasa, izvo zvinogadzira chiitiko chekumira kwemafuta uye gasi mune yakawanda yekudya.

SFI system, jekiseni rimwe nerimwe rakabatana zvakananga neECU, zvichiteerana, rinogona kuitwa chaizvo nguva isati yavhurwa jekiseni rekuisa injector, jekiseni rinogona kuitwa pakati pemajekiseni maviri enguva yekugadziriswa kweiyo musanganiswa kuti ienderane nekuchinja mumamiriro akasiyana. . Naizvozvo, SFI ndiyo yakanyatsojeka uye yakanakira nzira yeakawanda-poinzi inodzorwa nemagetsi jekiseni system, akawanda emota injini parizvino ari kushandisa nenzira iyi.